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Mhetre UV, Haval NB, Bondle GM, Rathod SS, Choudhari PB, Kumari J, Sriram D, Haval KP. Design, synthesis and molecular docking study of novel triazole-quinazolinone hybrids as antimalarial and antitubercular agents. Bioorg Med Chem Lett 2024:129800. [PMID: 38763480 DOI: 10.1016/j.bmcl.2024.129800] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2024] [Revised: 05/09/2024] [Accepted: 05/15/2024] [Indexed: 05/21/2024]
Abstract
In a quest to discover new antimalarial and antitubercular drugs, we have designed and synthesized a series of novel triazole-quinazolinone hybrids. The in vitro screening of the triazole-quinazolinone hybrid entities against the plasmodium species P. falciparum offered potent antimalarial molecules 6c, 6d, 6f, 6g, 6j &6k owing comparable activity to the reference drugs. Furthermore, the target compounds were evaluated in vitro against Mycobacterium tuberculosis (MTB) H37Rv strain. Among the screened compounds, 6c, 6d and 6l were found to be the most active molecules with a MIC values of 19.57-40.68 μM. The cytotoxicity of the most active compounds was studied against RAW 264.7 cell line by MTT assay and no toxicity was observed. The computational study including drug likeness and ADMET profiling, DFT, and molecular docking study was done to explore the features of target molecules. The compounds 6a, 6g, and 6k exhibited highest binding affinity of -10.3 kcal/mol with docked molecular targets from M. tuberculosis. Molecular docking study indicates that all the molecules are binding to the falcipain 2 protease (PDB: 6SSZ) of the P. falciparum. Our findings indicated that these new triazole-quinazolinone hybrids may be considered hit molecules for further optimization studies.
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Affiliation(s)
- Udhav V Mhetre
- Department of Chemistry, Dr. Babasaheb Ambedkar Marathwada University SubCampus, Osmanabad 413501, MS, India
| | - Nitin B Haval
- Department of Chemistry, Dr. Babasaheb Ambedkar Marathwada University, Aurangabad 431004, MS, India
| | - Giribala M Bondle
- Department of Chemistry, Dr. Babasaheb Ambedkar Marathwada University, Aurangabad 431004, MS, India
| | - Sanket S Rathod
- Department of Pharmaceutical Chemistry, Bharati Vidyapeeth College of Pharmacy, Kolhapur 416013, MS, India
| | - Prafulla B Choudhari
- Department of Pharmaceutical Chemistry, Bharati Vidyapeeth College of Pharmacy, Kolhapur 416013, MS, India
| | - Jyothi Kumari
- Department of Pharmacy, Birla Institute of Technology and Science-Pilani, Hyderabad Campus, Jawahar Nagar, Shameerpet Mandal, R. R. District, Hyderabad 500078, India
| | - Dharmarajan Sriram
- Department of Pharmacy, Birla Institute of Technology and Science-Pilani, Hyderabad Campus, Jawahar Nagar, Shameerpet Mandal, R. R. District, Hyderabad 500078, India
| | - Kishan P Haval
- Department of Chemistry, Dr. Babasaheb Ambedkar Marathwada University SubCampus, Osmanabad 413501, MS, India.
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Ravindar L, Hasbullah SA, Rakesh KP, Raheem S, Agustar HK, Ismail N, Ling LY, Hassan NI. Exploring diverse frontiers: Advancements of bioactive 4-aminoquinoline-based molecular hybrids in targeted therapeutics and beyond. Eur J Med Chem 2024; 264:116043. [PMID: 38118392 DOI: 10.1016/j.ejmech.2023.116043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Revised: 12/04/2023] [Accepted: 12/09/2023] [Indexed: 12/22/2023]
Abstract
Amongst heterocyclic compounds, quinoline and its derivatives are advantaged scaffolds that appear as a significant assembly motif for developing new drug entities. Aminoquinoline moiety has gained significant attention among researchers in the 21stcentury. Considering the biological and pharmaceutical importance of aminoquinoline derivatives, herein, we review the recent developments (since 2019) in various biological activities of the 4-aminoquinoline scaffold hybridized with diverse heterocyclic moieties such as quinoline, pyridine, pyrimidine, triazine, dioxine, piperazine, pyrazoline, piperidine, imidazole, indole, oxadiazole, carbazole, dioxole, thiazole, benzothiazole, pyrazole, phthalimide, adamantane, benzochromene, and pyridinone. Moreover, by gaining knowledge about SARs, structural insights, and molecular targets, this review may help medicinal chemists design cost-effective, selective, safe, and more potent 4-aminoquinoline hybrids for diverse biological activities.
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Affiliation(s)
- Lekkala Ravindar
- Department of Chemical Sciences, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, Bangi, 43600, Selangor, Malaysia
| | - Siti Aishah Hasbullah
- Department of Chemical Sciences, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, Bangi, 43600, Selangor, Malaysia
| | - K P Rakesh
- Department of Radiology, Biomedical Research Imaging Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA
| | - Saki Raheem
- School of Life Sciences, University of Westminster, 115 New Cavendish Street, W1W 6UW, London, United Kingdom
| | - Hani Kartini Agustar
- Department of Earth Sciences and Environment, Universiti Kebangsaan Malaysia, Bangi, 43600, Selangor, Malaysia
| | - Norzila Ismail
- Department of Pharmacology, School of Medicinal Sciences, Universiti Sains Malaysia, 16150, Kubang Kerian, Kelantan, Malaysia
| | - Lau Yee Ling
- Department of Parasitology, Faculty of Medicine, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Nurul Izzaty Hassan
- Department of Chemical Sciences, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, Bangi, 43600, Selangor, Malaysia.
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3
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Bakale RD, Sulakhe SM, Kasare SL, Sathe BP, Rathod SS, Choudhari PB, Madhu Rekha E, Sriram D, Haval KP. Design, synthesis and antitubercular assessment of 1, 2, 3-triazole incorporated thiazolylcarboxylate derivatives. Bioorg Med Chem Lett 2024; 97:129551. [PMID: 37979730 DOI: 10.1016/j.bmcl.2023.129551] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Revised: 10/20/2023] [Accepted: 11/09/2023] [Indexed: 11/20/2023]
Abstract
A library of 1, 2, 3-triazole incorporated thiazolylcarboxylate derivatives (7a-q) and (8a-j) were synthesized and evaluated for their in-vitro antitubercular activity against Mycobacterium tuberculosis H37Rv. The two compounds 7h and 8h have displayed excellent antitubercular activity with MIC values of 3.12 and 1.56 µg/mL respectively (MIC values of standard drugs; Ciprofloxacin 1.56 μg/mL & Ethambutol 3.12 μg/mL). Whereas, the four compounds 7i, 7n, 7p and 8i displayed noticeable antitubercular activity with a MIC value of 6.25 µg/mL. The active compounds of the series were further studied for their cytotoxicity against RAW264.7 cell line using MTT assay. Furthermore, to study the probable mechanism of antitubercular action, physicochemical property profiling, DFT calculation and molecular docking study were executed on mycobacterial cell wall target Decaprenylphosphoryl-β-d-ribose 2'-epimerase 1 (DprE1). Among all the compounds, 7h (-10 kcal/mol) and 8h (-10.1 kcal/mol) exerted the highest negative binding affinity against the targeted DprE1 (PDB: 4NCR) protein.
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Affiliation(s)
- Rajubai D Bakale
- Department of Chemistry, Dr. Babasaheb Ambedkar Marathwada University SubCampus, Osmanabad 413501, MS, India
| | - Shubham M Sulakhe
- Department of Chemistry, Dr. Babasaheb Ambedkar Marathwada University SubCampus, Osmanabad 413501, MS, India
| | - Sanghratna L Kasare
- Department of Chemistry, Dr. Babasaheb Ambedkar Marathwada University SubCampus, Osmanabad 413501, MS, India
| | - Bhaurao P Sathe
- Department of Chemistry, Dr. Babasaheb Ambedkar Marathwada University SubCampus, Osmanabad 413501, MS, India
| | - Sanket S Rathod
- Department of Pharmaceutical Chemistry, Bharati Vidyapeeth College of Pharmacy, Kolhapur 416013, MS, India
| | - Prafulla B Choudhari
- Department of Pharmaceutical Chemistry, Bharati Vidyapeeth College of Pharmacy, Kolhapur 416013, MS, India
| | - Estharla Madhu Rekha
- Department of Pharmacy, Birla Institute of Technology and Science-Pilani, Hyderabad Campus, Jawahar Nagar, Shameerpet Mandal, R. R. District, Hyderabad 500078, India
| | - Dharmarajan Sriram
- Department of Pharmacy, Birla Institute of Technology and Science-Pilani, Hyderabad Campus, Jawahar Nagar, Shameerpet Mandal, R. R. District, Hyderabad 500078, India
| | - Kishan P Haval
- Department of Chemistry, Dr. Babasaheb Ambedkar Marathwada University SubCampus, Osmanabad 413501, MS, India.
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4
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Ren J, Zhan J. Microbial glycosylation of antitubercular agent chlorflavonin. J Biosci Bioeng 2023; 136:366-373. [PMID: 37743150 DOI: 10.1016/j.jbiosc.2023.09.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Revised: 08/18/2023] [Accepted: 09/04/2023] [Indexed: 09/26/2023]
Abstract
Flavonoids have shown health-benefiting properties, such as antioxidative and anti-inflammatory activities, and are commonly used as nutraceuticals and pharmaceuticals. Although flavonoids are predominantly identified from plants, several filamentous fungal species have also been reported to produce bioactive flavonoids, including chlorflavonin from Aspergillus candidus, a novel halogenated flavonoid with potent antifungal and antitubercular (anti-TB) activities. Unfortunately, the low water-solubility of this molecule may hinder its bioavailability. Glycosylation is an effective method to enhance the polarity of natural products and alter their physicochemical properties. This work focuses on the development of novel water-soluble chlorflavonin derivatives to combat the threat of drug-resistant tuberculosis. In this study, we first increased the production titer of chlorflavonin in A. candidus NRRL 5214 by optimizing the fermentation and purification processes. Next, chlorflavonin-5-O-β-d-glucuronopyranoside (1) and chlorflavonin-7-O-4″-O-methyl-β-d-glucopyranoside (2) were produced from chlorflavonin using Streptomyces chromofuscus ATCC 49982 and Beauveria bassiana ATCC 7159, respectively. Compared to chlorflavonin (4.38 ± 0.54 mg/L in water), the water solubility of the two new glycosides was determined to be 117.86 ± 4.81 mg/L (1) and 124.34 ± 9.13 mg/L (2), respectively. This study provides a promising method to create water-soluble glycosides of chlorflavonin for the development of novel anti-TB drugs.
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Affiliation(s)
- Jie Ren
- Department of Biological Engineering, Utah State University, 4105 Old Main Hill, Logan, UT 84322-4105, USA
| | - Jixun Zhan
- Department of Biological Engineering, Utah State University, 4105 Old Main Hill, Logan, UT 84322-4105, USA.
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5
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Kumar N, Khanna A, Kaur K, Kaur H, Sharma A, Bedi PMS. Quinoline derivatives volunteering against antimicrobial resistance: rational approaches, design strategies, structure activity relationship and mechanistic insights. Mol Divers 2023; 27:1905-1934. [PMID: 36197551 PMCID: PMC9533295 DOI: 10.1007/s11030-022-10537-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Accepted: 09/29/2022] [Indexed: 11/27/2022]
Abstract
Emergence of antimicrobial resistance has become a great threat to human species as there is shortage of development of new antimicrobial agents. So, its mandatary to combat AMR by initiating research and developing new novel antimicrobial agents. Among phytoconstituents, Quinoline (nitrogen containing heterocyclic) have played a wide role in providing new bioactive molecules. So, this review provides rational approaches, design strategies, structure activity relationship and mechanistic insights of newly developed quinoline derivatives as antimicrobial agents.
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Affiliation(s)
- Nitish Kumar
- Department of Pharmaceutical Sciences, Guru Nanak Dev University, Amritsar, 143005, India.
| | - Aanchal Khanna
- Department of Pharmaceutical Sciences, Guru Nanak Dev University, Amritsar, 143005, India
| | - Komalpreet Kaur
- Department of Pharmaceutical Sciences, Guru Nanak Dev University, Amritsar, 143005, India
| | - Harmandeep Kaur
- Department of Pharmaceutical Sciences, Guru Nanak Dev University, Amritsar, 143005, India
| | - Anchal Sharma
- Department of Pharmaceutical Sciences, Guru Nanak Dev University, Amritsar, 143005, India
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Patel PP, Patel NB, Tople MS, Patel VM, Ahmed I, Patel H. Microwave produced 8-methyl-1,2,4,8-tetraazaspiro[4.5]dec-2-en-3-amine derivatives: their in vitro and in silico analysis. Mol Divers 2023:10.1007/s11030-023-10665-z. [PMID: 37280405 DOI: 10.1007/s11030-023-10665-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2023] [Accepted: 05/22/2023] [Indexed: 06/08/2023]
Abstract
Compound 1 is formed by a microwave-assisted multicomponent reaction of 1-methylpiperidin-4-one, 2-amino-4-methoxy-6-methyl-1,3,5-triazine, and thiosemicarbazide, followed by the synthesis of Schiff base 2a-l with a variety of aldehydes. A comparison was made between the conventional and microwave methods, and the microwave approach was shown to be considerably superior to the classical method since it takes less time and produces higher yields. Several spectral investigations, including 1H NMR, 13C NMR, Mass, and IR spectroscopy, are used to characterize the complete series. In vitro antibacterial testing suggests that compounds 2c, 2f, and 2g are promising antibacterial agents, although compounds 2d, 2e, and 2l are effective antimycobacterial agents when compared to the conventional medicine Rifampicin. The docking score from docking studies is considerable, which validates the results of the biological examination. Molecular docking was performed on Escherichia coli DNA gyrase. According to the in silico ADME analysis, each drug molecule is ideal for use in terms of drug solubility, hydrogen bonding, and cell permeability.
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Affiliation(s)
- Parth P Patel
- Organic Research Laboratory, Department of Chemistry, Veer Narmad South Gujarat University, Udhana-Magdalla Road, Surat, Gujarat, 395 007, India
| | - Navin B Patel
- Organic Research Laboratory, Department of Chemistry, Veer Narmad South Gujarat University, Udhana-Magdalla Road, Surat, Gujarat, 395 007, India.
| | - Manesh S Tople
- Organic Research Laboratory, Department of Chemistry, Veer Narmad South Gujarat University, Udhana-Magdalla Road, Surat, Gujarat, 395 007, India
| | - Vatsal M Patel
- Department of Chemistry, Jamanaben Narottambhai Motiram Patel Science College, Surat, Gujarat, 395017, India
| | - Iqrar Ahmed
- Department of Pharmaceutical Chemistry, Prof. Ravindra Nikam College of Pharmacy, Gondur, Dhule, Maharashtra, 424002, India
| | - Harun Patel
- Division of Computer Aided Drug Design, Department of Pharmaceutical Chemistry, R. C. Patel Institute of Pharmaceutical Education and Research, Shirpur, Maharashtra, 425405, India
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7
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Chagaleti BK, Reddy MBR, Saravanan V, B S, D P, Senthil Kumar P, Kathiravan MK. An overview of mechanism and chemical inhibitors of shikimate kinase. J Biomol Struct Dyn 2023; 41:14582-14598. [PMID: 36974959 DOI: 10.1080/07391102.2023.2193985] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Accepted: 02/04/2023] [Indexed: 03/29/2023]
Abstract
Tuberculosis is a highly infectious disease other than HIV/AIDS and it is one of the top ten causes of death worldwide. Resistance development in the bacteria occurs because of genetic alterations, and the molecular insights suggest that the accumulation of mutation in the individual drug target genes is the primary mechanism of multi-drug resistant tuberculosis. Chorismate is an essential structural fragment for the synthesis of aromatic amino acids and synthesized biochemically by a number of bacteria, including Mycobacterium tuberculosis, utilizing the shikimate pathway. This shikimate kinase is the newer possible target for the generation of novel antitubercular drug because this pathway is expressed only in mycobacterium and not in Mammals. The discovery and development of shikimate kinase inhibitors provide an opportunity for the development of novel selective medications. Multiple shikimate kinase inhibitors have been identified via insilico virtual screening and related protein-ligand interactions along with their in-vitro studies. These inhibitors bind to the active site in a similar fashion to shikimate. In the current review, we present an overview of the biology and chemistry of the shikimate kinase protein and its inhibitors, with special emphasis on the various active scaffold against the enzyme. A variety of chemically diversified synthetic scaffolds including Benzothiazoles, Oxadiazoles, Thiobarbiturates, Naphthoquinones, Thiazoleacetonitriles, Hybridized Pyrazolone derivatives, Orthologous biological macromolecule derivatives, Manzamine Alkaloids derivatives, Dipeptide inhibitor, and Chalcones are discussed in detail. These derivatives bind to the specific target appropriately proving their potential ability through different binding interactions and effectively explored as an effective and selective Sk inhibitor.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Bharath Kumar Chagaleti
- Department of Pharmaceutical Chemistry, SRM College of Pharmacy, SRM IST Kattankulathur, Kancheepuram, Tamil Nadu, India
| | - M B Rahul Reddy
- Department of Pharmaceutical Chemistry, SRM College of Pharmacy, SRM IST Kattankulathur, Kancheepuram, Tamil Nadu, India
| | - Venkatesan Saravanan
- Department of Pharmaceutical Chemistry, SRM College of Pharmacy, SRM IST Kattankulathur, Kancheepuram, Tamil Nadu, India
| | - Shanthakumar B
- Department of Pharmaceutical Chemistry, SRM College of Pharmacy, SRM IST Kattankulathur, Kancheepuram, Tamil Nadu, India
| | - Priya D
- Department of Pharmaceutical Chemistry, SRM College of Pharmacy, SRM IST Kattankulathur, Kancheepuram, Tamil Nadu, India
| | - P Senthil Kumar
- Faculty of Pharmacy, Karpagam Academy of Higher Education, Coimbatore, Tamil Nadu, India
| | - M K Kathiravan
- 209, Dr. APJ Abdul Kalam Research Lab, Dept of Pharmaceutical Chemistry, SRM College of Pharmacy, SRM IST Kattankulathur, Kancheepuram, Tamil Nadu, India
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Sehrawat R, Rathee P, Khatkar S, Akkol E, Khayatkashani M, Nabavi SM, Khatkar A. DihydrofolateReductase (DHFR) Inhibitors: A Comprehensive Review. Curr Med Chem 2023:CMC-EPUB-130095. [PMID: 36896902 DOI: 10.2174/0929867330666230310091510] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Revised: 12/05/2022] [Accepted: 12/29/2022] [Indexed: 03/11/2023]
Abstract
BACKGROUND Dihydrofolate reductase (DHFR) is an indispensable enzyme required for the survival of most prokaryotic and eukaryotic cells as it is involved in the biosynthesis of essential cellular components. DHFR has attracted a lot of attention as a molecular target for various diseases like cancer, bacterial infection, malaria, tuberculosis, dental caries, trypanosomiasis, leishmaniasis, fungal infection, influenza, Buruli ulcer, and respiratory illness. Various teams of researchers have reported different DHFR inhibitors to explore their therapeutic efficacy. Despite all the progress made, there is a strong need to find more novel leading structures, which may be used as better and safe DHFR inhibitors, especially against the microorganisms which are resistant to the developed drug candidates. OBJECTIVE This review aims to pay attention to recent development, particularly made in the past two decades and published in this field, and pay particular attention to promising DHFR inhibitors. Hence, an attempt has been made in this article to highlight the structure of dihydrofolate reductase, the mechanism of action of DHFR inhibitors, most recently reported DHFR inhibitors, diverse pharmacological applications of DHFR inhibitors, reported in-silico study data and recent patents based on DHFR inhibitors to comprehensively portray the current scenery for researchers interested in designing novel DHFR inhibitors. CONCLUSION A critical review of recent studies revealed that most novel DHFR inhibitor compounds either synthetically or naturally derived are characterized by the presence of heterocyclic moieties in their structure. Non-classical antifolates like trimethoprim, pyrimethamine, and proguanil are considered excellent templates to design novel DHFR inhibitors, and most of them have substituted 2,4-diamino pyrimidine motifs. Targeting DHFR has massive potential to be investigated for newer therapeutic possibilities to treat various diseases of clinical importance.
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Affiliation(s)
- Renu Sehrawat
- Gurugram Global College of Pharmacy, Gurugram, Haryana, India
| | - Priyanka Rathee
- SBMN Institute of Pharmaceutical Sciences and Research, B.M.U., Rohtak
| | - Sarita Khatkar
- Vaish Institute of Pharmaceutical Education and Research, Rohtak, India
| | - EsraKüpeli Akkol
- Department of Pharmacognosy, Faculty of Pharmacy, Gazi University, Etiler 06330, Ankara, Turkey
| | - Maryam Khayatkashani
- School of Iranian Traditional Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Seyed Mohammad Nabavi
- Applied Biotechnology Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Anurag Khatkar
- Department of Pharmaceutical Sciences, MaharshiDayanand University, Rohtak, Haryana, India
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9
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Zhao X, Mei Y, Guo Z, Si S, Ma X, Li Y, Li Y, Song D. Discovery of new riminophenazine analogues as antimycobacterial agents against drug-resistant Mycobacterium tuberculosis. Bioorg Chem 2022; 128:105929. [PMID: 35701239 DOI: 10.1016/j.bioorg.2022.105929] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Revised: 05/30/2022] [Accepted: 06/02/2022] [Indexed: 11/02/2022]
Abstract
Twenty-three new riminophenazine and pyrido[3,2-b]quinoxaline derivatives were prepared and examined for their antimycobacterial activities against Mycobacterium marinum and Mycobacterium tuberculosis H37Rv, taking clofazimine (1) as the lead. Structure-activity relationship (SAR) analysis revealed that the introduction of a heterocycle or diethylamine substituted benzene moiety on the N-5 atom might be beneficial for activity. The most potent compound 7m also displayed enhanced activity against wild-type as well as multidrug-resistant (MDR) and extensively drug-resistant (XDR) TB clinical isolates, with the MICs ranging from 0.08 to 1.25 μg/mL, especially effective toward strain M20A507, resistant to 1. Further mechanism study indicated that its anti-TB activity was independent of cell membrane disruption, but related to NDH-2 reduction and the resulting high ROS production. Our study provides instructive guidance for the further development of clofazimine derivatives into promising antimicrobial agents against MDR and XDR TB.
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Affiliation(s)
- Xiaoqiang Zhao
- Beijing Key Laboratory of Antimicrobial Agents, Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, China
| | - Yuheng Mei
- Beijing Key Laboratory of Antimicrobial Agents, Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, China
| | - Zhihao Guo
- Beijing Key Laboratory of Antimicrobial Agents, Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, China
| | - Shuyi Si
- Beijing Key Laboratory of Antimicrobial Agents, Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, China
| | - Xican Ma
- Beijing Key Laboratory of Antimicrobial Agents, Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, China
| | - Yinghong Li
- Beijing Key Laboratory of Antimicrobial Agents, Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, China.
| | - Yan Li
- Beijing Key Laboratory of Antimicrobial Agents, Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, China.
| | - Danqing Song
- Beijing Key Laboratory of Antimicrobial Agents, Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, China
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10
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Bangalore PK, Pedapati RK, Pranathi AN, Batchu UR, Misra S, Estharala M, Sriram D, Kantevari S. Aryl-n-hexanamide linked enaminones of usnic acid as promising antimicrobial agents. Mol Divers 2022; 27:811-836. [PMID: 35608808 DOI: 10.1007/s11030-022-10456-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2022] [Accepted: 04/28/2022] [Indexed: 11/30/2022]
Abstract
Lichen secondary metabolites are well explored medicinal agents with diverse pharmacological properties. One of the important antibiotic lichen secondary metabolites is usnic acid. Its diverse medicinal profiles prompted us to explore it as a potential antitubercular molecule. Towards this direction, continuing our efforts on the discovery and development of new analogs with potent antitubercular properties we designed, synthesized, and evaluated a set of 37 usnic acid enaminone-coupled aryl-n-hexanamides (3-39). The study yielded a 3,4-dimethoxyphenyl compound (13, 5.3 µM) as the most active anti-TB molecule. The docking studies were performed on 7 different enzymes to better understand the binding modes, where it was observed that compound 13 bound strongly with glucose dehydrogenase (Gscore: - 9.03). Further antibacterial investigations revealed compound 2 with potent inhibition on Salmonella typhi and Bacillus subtilis (MIC 3 µM) and MIC values of 7 and 14 µM on Streptococcus mutans and Escherichia coli respectively. Compound 19 (3-F-5-CF3-phenyl) displayed encouraging antibacterial profiles against E. coli, S. typhi and S. mutans with MIC values of 10 µM respectively. Interestingly, compound 20 (2,6-difluorophenyl) also displayed good antibacterial activity against E. coli with an MIC value of 6 µM. These encouraging pharmacological results will help for better designing and developing usnic acid-based semi-synthetic derivatives as potential antimicrobial agents. A set of 37 new usnic acid enaminone-coupled aryl-n-hexanamides were synthesized and evaluated as potential antimicrobial agents. Compound 13 was identified as the most active antitubercular molecule. 13 was further docked against 7 different enzymes of tuberculosis. The molecule displayed maximum binding energy with the enzyme Glucose dehydrogenase (Gscore: - 9.03), indicating that these hexanamides possibly act by inhibiting the glucose metabolic pathway of the bacterium. Surprisingly, the intermediate hexanoic acid 2 was identified as potent antibacterial agent, acting on both gram-positive and gram-negative bacterial strains (3-14 μM). The active compounds may be subjected to structural iterations to develop further leads.
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Affiliation(s)
- Pavan Kumar Bangalore
- Fluoro and Agrochemicals Division, CSIR- Indian Institute of Chemical Technology, Hyderabad, Telangana, 500007, India. .,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh, 201002, India. .,Robert F. Smith School of Chemical and Biomolecular Engineering, Cornell University, Ithaca, NY, 14850, USA.
| | - Ravi Kumar Pedapati
- Fluoro and Agrochemicals Division, CSIR- Indian Institute of Chemical Technology, Hyderabad, Telangana, 500007, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh, 201002, India
| | - Abburi Naga Pranathi
- Fluoro and Agrochemicals Division, CSIR- Indian Institute of Chemical Technology, Hyderabad, Telangana, 500007, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh, 201002, India
| | - Uma Rajeswari Batchu
- Applied Biology Division, CSIR- Indian Institute of Chemical Technology, Hyderabad, Telangana, 500007, India
| | - Sunil Misra
- Applied Biology Division, CSIR- Indian Institute of Chemical Technology, Hyderabad, Telangana, 500007, India
| | - Madhurekha Estharala
- Medicinal Chemistry and Antimycobacterial Research Laboratory, Pharmacy Group, Birla Institute of Technology and Science-Pilani, Hyderabad Campus, Jawahar Nagar, Hyderabad, Telangana, 500078, India
| | - Dharmarajan Sriram
- Medicinal Chemistry and Antimycobacterial Research Laboratory, Pharmacy Group, Birla Institute of Technology and Science-Pilani, Hyderabad Campus, Jawahar Nagar, Hyderabad, Telangana, 500078, India
| | - Srinivas Kantevari
- Fluoro and Agrochemicals Division, CSIR- Indian Institute of Chemical Technology, Hyderabad, Telangana, 500007, India. .,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh, 201002, India.
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11
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Hammami F, Ben Ayed H, Koubaa M, Chakroun A, Hsairi M, Smaoui F, Gargouri L, Rekik K, Ben Jemaa M. Clinical, laboratory and evolutionary features of abdominal tuberculosis in comparison with other forms of extrapulmonary tuberculosis. Indian J Tuberc 2022; 69:184-190. [PMID: 35379400 DOI: 10.1016/j.ijtb.2021.07.017] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Revised: 06/19/2021] [Accepted: 07/30/2021] [Indexed: 06/14/2023]
Abstract
BACKGROUND/OBJECTIVES Tuberculosis is a multisystem disease that might affect any organ. Abdominal tuberculosis (ABT) represents 5-17% from all extrapulmonary tuberculosis (EPT) sites. We aimed to study the clinical, laboratory and evolutionary features of ABT cases and to identify predictive factors associated with ABT. METHODS We conducted a retrospective study including all patients hospitalized in the infectious diseases department for EPT between 1991 and 2019. We studied the characteristics of ABT cases, and we compared them with other EPT cases. RESULTS We identified 519 patients with EPT, among whom 86 (16.6%) patients had ABT. There were 58 females (67.4%). Peritoneal tuberculosis was the most common clinical form of ABT (68.6%), followed by intestinal tuberculosis (18.6%). Patients aged 60 years and above were significantly less affected with ABT (odds ratio (OR) = 0.2; p = 0.001). The revealing systemic symptoms including fever (OR = 2.04; p = 0.006), weight loss (OR = 2.5; p < 0.001) and anorexia (OR = 1.7; p = 0.021) were significantly more frequent among ABT patients. Inflammatory markers including C-reactive protein levels (37 [10-89] mg/l vs 10 [4-57] mg/l; p < 0.001) and erythrocyte sedimentation rates (43 [15-95] mm/h vs 27 [15-60] mm/h; p = 0.044) were significantly higher among ABT cases. Multivariate logistic regression analysis showed that anorexia (adjusted OR (AOR) = 1.9; p = 0.015) and pulmonary involvement (AOR = 3.3; p = 0.002) were independent predictors of higher rate of ABT. Concomitant involvement of neuro-meningeal (AOR = 0.18; p = 0.001) and osteo-articular (AOR = 0.2; p = 0.01) sites, 40-59 (AOR = 0.2; p < 0.001) and ≥60 (AOR = 0.2; p < 0.001) age groups as well as hemoglobin rate (AOR = 0.7; p < 0.001) were independently associated with lower rate of ABT. CONCLUSIONS Anorexia and pulmonary involvement were independent predictors of higher rate of ABT. Concomitant involvement of neuro-meningeal and osteo-articular sites, 40-59 and ≥60 age groups and hemoglobin rate were independently associated with lower rate of ABT.
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Affiliation(s)
- Fatma Hammami
- Infectious Diseases Department and Extra-pulmonary Research Unity UR17SP12, Hedi Chaker University Hospital, University of Sfax, Tunisia.
| | - Houda Ben Ayed
- Preventive Medicine and Hygiene Department, Hedi Chaker University Hospital, University of Sfax, Tunisia
| | - Makram Koubaa
- Infectious Diseases Department and Extra-pulmonary Research Unity UR17SP12, Hedi Chaker University Hospital, University of Sfax, Tunisia.
| | - Amal Chakroun
- Infectious Diseases Department and Extra-pulmonary Research Unity UR17SP12, Hedi Chaker University Hospital, University of Sfax, Tunisia
| | - Manel Hsairi
- Pediatric Emergency and Reanimation Department, Hedi Chaker University Hospital, University of Sfax, Tunisia
| | - Fatma Smaoui
- Infectious Diseases Department and Extra-pulmonary Research Unity UR17SP12, Hedi Chaker University Hospital, University of Sfax, Tunisia
| | - Lamia Gargouri
- Pediatric Emergency and Reanimation Department, Hedi Chaker University Hospital, University of Sfax, Tunisia
| | - Khaoula Rekik
- Infectious Diseases Department and Extra-pulmonary Research Unity UR17SP12, Hedi Chaker University Hospital, University of Sfax, Tunisia
| | - Mounir Ben Jemaa
- Infectious Diseases Department and Extra-pulmonary Research Unity UR17SP12, Hedi Chaker University Hospital, University of Sfax, Tunisia
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12
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Samar M, Kuldeep S, Bhoomika Y, Vaseem A, Shweta S. A review on Coumarin derivatives as potent anti-Tuberculosis agent. Mini Rev Med Chem 2021; 22:1064-1080. [PMID: 34579635 DOI: 10.2174/1389557521666210927124511] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Revised: 04/08/2021] [Accepted: 06/01/2021] [Indexed: 11/22/2022]
Abstract
BACKGROUND Tuberculosis (TB) is an acute or chronic infectious disease caused by several species of Myco-bacterium, collectively called as tubercle bacilli or Mycobacterium tuberculosis complex. Around 10 million people get sick with tuberculosis (TB) each year. TB is the second leading cause of deaths today after HIV/AIDS. A serious problem in the context of MDR-TB, is the extensively drug-resistant TB which is an im-portant reason for the restricted chemotherapy in TB. Therefore, there is a need to explore new antitubercular (anti-TB) agents. Coumarin is an oxygen-containing heterocyclic compound and can be widely found in many natural products, and many of them display diverse biological activities.The wide spectrum of activities of coumarin molecules have intrigued the scientists to explore the natural coumarins and their synthetic deriva-tives for their potential as anti-TB drugs. OBJECTIVE The objective of this review is to emphasize on important coumarin analogs with anti-TB activities and their structure-activity relationships (SAR) for designing better anti-TB agents. METHOD Latest, authentic and published reports on various synthetic and natural coumarin derivatives and their anti-TB activities is being thoroughly studied and analyzed. The structural requirements of coumarins as anti-TB drugs have also been studied. RESULT Collection and compilation of reports on various synthetic and natural coumarin derivatives and their anti-TB activities is being done. CONCLUSION The study provides latest report on coumarin derivatives synthesized as anti-TB agent and wheth-er their activity depends on structural changes or not.
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Affiliation(s)
- Mujeeb Samar
- Faculty of Pharmacy, Integral University, Kursi road, Lucknow-226026 (U.P.). India
| | - Singh Kuldeep
- Faculty of Pharmacy, Integral University, Kursi road, Lucknow-226026 (U.P.). India
| | - Yogi Bhoomika
- Hygia Institute Of Pharmaceutical Education And Research.Lucknow. India
| | - Ansari Vaseem
- Faculty of Pharmacy, Integral University, Kursi road, Lucknow-226026 (U.P.). India
| | - Sinha Shweta
- Goel Institute of Pharmaceutical Sciences, Lucknow -226028 (U.P.). India
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13
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Desai NC, Kotadiya GM, Jadeja KA, Shah KN, Malani AH, Manga V, Vani T. Synthesis, antitubercular, antimicrobial activities and molecular docking study of quinoline bearing dihydropyrimidines. Bioorg Chem 2021; 115:105173. [PMID: 34329996 DOI: 10.1016/j.bioorg.2021.105173] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Revised: 07/08/2021] [Accepted: 07/11/2021] [Indexed: 01/13/2023]
Abstract
In order to develop the antimicrobial and antitubercular agents, we have derived quinoline bearing dihydropyrimidine analogues 5a-o and structures of these compounds were determined by spectroscopic techniques. Further, we have calculated the molecular properties prediction and drug-likeness by Molinspiration property calculation toolkit and MolSoft software, respectively. The most active compound against Mycobacterium tuberculosis (5m, MIC = 0.20 µg/mL) also possessed a maximum drug-likeness model score (0.42). Compounds 5m, 5g and 5k were possessed promising antibacterial activity against tested bacterial species. Compound 5k was the only compound to have eye-catcher antifungal activity. Furthermore, the MTT cytotoxicity results on HeLa cells suggested lower cytotoxicity of biologically active compounds. Supramolecular interactions of the synthesized compounds has been assessed my means of molecular docking studies. Although all the synthesized compounds are showing preferably good interactions with their respective proteins, their binding free energies values suggest that these molecules are preferred for antitubercular activity rather than antimicrobial activity.
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Affiliation(s)
- Nisheeth C Desai
- Division of Medicinal Chemistry, Department of Chemistry, (UGC NON-SAP & DST-FIST Sponsored), Mahatma Gandhi Campus, Maharaja Krishnakumarsinhji Bhavnagar University, Bhavnagar 364 002, Gujarat, India.
| | - Ghanshyam M Kotadiya
- Division of Medicinal Chemistry, Department of Chemistry, (UGC NON-SAP & DST-FIST Sponsored), Mahatma Gandhi Campus, Maharaja Krishnakumarsinhji Bhavnagar University, Bhavnagar 364 002, Gujarat, India
| | - Krunalsinh A Jadeja
- Division of Medicinal Chemistry, Department of Chemistry, (UGC NON-SAP & DST-FIST Sponsored), Mahatma Gandhi Campus, Maharaja Krishnakumarsinhji Bhavnagar University, Bhavnagar 364 002, Gujarat, India
| | - Keyur N Shah
- Division of Medicinal Chemistry, Department of Chemistry, (UGC NON-SAP & DST-FIST Sponsored), Mahatma Gandhi Campus, Maharaja Krishnakumarsinhji Bhavnagar University, Bhavnagar 364 002, Gujarat, India
| | - Alimamad H Malani
- Division of Medicinal Chemistry, Department of Chemistry, (UGC NON-SAP & DST-FIST Sponsored), Mahatma Gandhi Campus, Maharaja Krishnakumarsinhji Bhavnagar University, Bhavnagar 364 002, Gujarat, India
| | - Vijjulatha Manga
- Molecular Modeling and Medicinal Chemistry Group, Department of Chemistry, University College of Science, Osmania University, Hyderabad 500007, Telangana, India
| | - Tamalapakula Vani
- Molecular Modeling and Medicinal Chemistry Group, Department of Chemistry, University College of Science, Osmania University, Hyderabad 500007, Telangana, India
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14
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Upadhyay HC. Coumarin-1,2,3-triazole Hybrid Molecules: An Emerging Scaffold for Combating Drug Resistance. Curr Top Med Chem 2021; 21:737-752. [PMID: 33655863 DOI: 10.2174/1568026621666210303145759] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Revised: 12/03/2020] [Accepted: 12/10/2020] [Indexed: 11/22/2022]
Abstract
Undoubtedly, antibiotics have saved billions of lives, but lack of novel antibiotics, development of resistance mechanisms in almost all clinical isolates of bacteria, and recurrent infections caused by persistent bacteria hamper the successful treatment of the infections. Due to the widespread emergence of resistance, even the new families of anti-microbial agents have a short life expectancy. Drugs acting on a single target often lead to drug resistance and are associated with various side effects. For overcoming this problem, either multidrug therapy, or a single drug acting on multiple targets may be used. The latter is called 'hybrid molecules,' which are formed by clubbing two biologically active pharmacophores together, with or without an appropriate linker. In this rapidly evolving era, the development of natural product-based hybrid molecules may be a super-alternative to multidrug therapy, for combating drug resistance caused by various bacterial and fungal strains. Coumarins (benzopyran-2-one) are one of the earliest reported plant secondary metabolites having a clinically proven diverse range of pharmacological properties. On the other hand, 1,2,3-triazole is a common pharmacophore in many drugs responsible for polar interactions, improving the solubility and binding affinity to biomolecular targets. In this review, we discuss recent advances in Coumarin-1,2,3-triazole hybrids as potential anti-bacterial agents, aiming to provide a useful platform for the exploration of new leads with a broader spectrum, more effectiveness and less toxicity with multiple modes of action for the development of cost-effective and safer drugs in the future.
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Affiliation(s)
- Harish C Upadhyay
- Laboratory of Chemistry, Department of Applied Sciences, Rajkiya Engineering College (Affiliated to Dr. A.P.J. Abdul Kalam Technical University, Lucknow), Churk, Sonbhadra-231206, India
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Bunbamrung N, Kittisrisopit S, Intaraudom C, Dramae A, Thawai C, Niemhom N, Harding DJ, Auncharoen P, Pittayakhajonwut P. Abyssomicin derivatives from the rhizosphere soil actinomycete Microbispora rhizosphaerae sp. nov. TBRC6028. Phytochemistry 2021; 185:112700. [PMID: 33647781 DOI: 10.1016/j.phytochem.2021.112700] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 02/03/2021] [Accepted: 02/04/2021] [Indexed: 06/12/2023]
Abstract
Three undescribed abyssomicin derivatives, including microbimisin, abyssomicins Z1, and Z2, were isolated from the soil actinomycete Microbispora rhizosphaerae sp. nov. TBRC6028. Chemical structures were determined by NMR spectroscopic data (1H, 13C, COSY, HSQC, HMBC, and NOESY spectra) and the absolute configurations were verified by single-crystal X-ray diffraction analyses together with the ECD spectral data. Microbimisin and abyssomicin Z1 exhibited weak antibacterial activity against Bacillus cereus with MIC values of 25.0 and 50.0 μg/mL without cytotoxicity against MCF-7 and Vero cells at the concentration of 50 μg/mL.
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Affiliation(s)
- Nantiya Bunbamrung
- National Center for Genetic Engineering and Biotechnology (BIOTEC), National Science and Technology Development Agency (NSTDA), Thailand Science Park, Phaholyothin Road, Klong Luang, Pathumthani, 12120, Thailand
| | - Suchada Kittisrisopit
- Department of biology, Faculty of Science, King Mongkut's Institute of Technology Ladkrabang, Bangkok, 10520, Thailand
| | - Chakapong Intaraudom
- National Center for Genetic Engineering and Biotechnology (BIOTEC), National Science and Technology Development Agency (NSTDA), Thailand Science Park, Phaholyothin Road, Klong Luang, Pathumthani, 12120, Thailand
| | - Aibrohim Dramae
- National Center for Genetic Engineering and Biotechnology (BIOTEC), National Science and Technology Development Agency (NSTDA), Thailand Science Park, Phaholyothin Road, Klong Luang, Pathumthani, 12120, Thailand
| | - Chitti Thawai
- Department of biology, Faculty of Science, King Mongkut's Institute of Technology Ladkrabang, Bangkok, 10520, Thailand; Antinobacterial Research Unit, Faculty of Science, King Mongkut's Institute of Technology Ladkrabang, Bangkok, 10520, Thailand; Center of Excellence in Applied Biosciences, King Mongkut's Institute of Technology Ladkrabang, Bangkok, 10520, Thailand
| | - Nantawan Niemhom
- Scientific Instruments Centre, Faculty of Science, King Mongkut's Institute of Technology Ladkrabang, Bangkok, 10520, Thailand
| | - David J Harding
- Functional Materials and Nanotechnology Center of Excellence, Walailak University, Thasala, Nakhon Si Thammarat, 80160, Thailand
| | - Patchanee Auncharoen
- National Center for Genetic Engineering and Biotechnology (BIOTEC), National Science and Technology Development Agency (NSTDA), Thailand Science Park, Phaholyothin Road, Klong Luang, Pathumthani, 12120, Thailand
| | - Pattama Pittayakhajonwut
- National Center for Genetic Engineering and Biotechnology (BIOTEC), National Science and Technology Development Agency (NSTDA), Thailand Science Park, Phaholyothin Road, Klong Luang, Pathumthani, 12120, Thailand.
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16
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Abstract
Imidazole is a five-membered heterocyclic moiety that possesses three carbon, two nitrogen, four hydrogen atoms, and two double bonds. It is also known as 1, 3-diazole. It contains two nitrogen atoms, in which one nitrogen bear a hydrogen atom, and the other is called pyrrole type nitrogen. The imidazole name was reported by Arthur Rudolf Hantzsch (1857–1935) in 1887. 1, 3-diazole is an amphoteric in nature i.e. it shows both acidic and basic properties. It is a white or colorless solid that is highly soluble in water and other polar solvents. Due to the presence of a positive charge on either of two nitrogen atom, it shows two equivalent tautomeric forms. Imidazole was first named glyoxaline because the first synthesis has been made by glyoxal and ammonia. It is the basic core of some natural products such as histidine, purine, histamine and DNA based structures, etc. Among the different heterocyclic compounds, imidazole is better known due to its broad range of chemical and biological properties. Imidazole has become an important synthon in the development of new drugs. The derivatives of 1, 3-diazole show different biological activities such as antibacterial, antimycobacterial, anti-inflammatory, antitumor, antidiabetic, anti-allergic, antipyretic, antiviral, antioxidant, anti-amoebic, antihelmintic, antifungal and ulcerogenic activities, etc. as reported in the literature. There are different examples of commercially available drugs in the market which contains 1, 3-diazole ring such as clemizole (antihistaminic agent), etonitazene (analgesic), enviroxime (antiviral), astemizole (antihistaminic agent), omeprazole, pantoprazole (antiulcer), thiabendazole (antihelmintic), nocodazole (antinematodal), metronidazole, nitroso-imidazole (bactericidal), megazol (trypanocidal), azathioprine (anti rheumatoid arthritis), dacarbazine (Hodgkin's disease), tinidazole, ornidazole (antiprotozoal and antibacterial), etc. This present review summarized some pharmacological activities and various kinds of synthetic routes for imidazole and their derived products. ![]()
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Affiliation(s)
- Ankit Siwach
- Department of Pharmaceutical Sciences, Maharshi Dayanand University, Rohtak, Haryana, India
| | - Prabhakar Kumar Verma
- Department of Pharmaceutical Sciences, Maharshi Dayanand University, Rohtak, Haryana, India.
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Polaquini CR, Marques BC, Ayusso GM, Morão LG, Sardi JCO, Campos DL, Silva IC, Cavalca LB, Scheffers DJ, Rosalen PL, Pavan FR, Ferreira H, Regasini LO. Antibacterial activity of a new monocarbonyl analog of curcumin MAC 4 is associated with divisome disruption. Bioorg Chem 2021; 109:104668. [PMID: 33601139 DOI: 10.1016/j.bioorg.2021.104668] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2020] [Revised: 01/06/2021] [Accepted: 01/18/2021] [Indexed: 02/07/2023]
Abstract
Curcumin (CUR) is a symmetrical dicarbonyl compound with antibacterial activity. On the other hand, pharmacokinetic and chemical stability limitations hinder its therapeutic application. Monocarbonyl analogs of curcumin (MACs) have been shown to overcome these barriers. We synthesized and investigated the antibacterial activity of a series of unsymmetrical MACs derived from acetone against Mycobacterium tuberculosis and Gram-negative and Gram-positive species. Phenolic MACs 4, 6 and 8 showed a broad spectrum and potent activity, mainly against M. tuberculosis, Acinetobacter baumannii and methicillin-resistant Staphylococcus aureus (MRSA), with MIC (minimum inhibitory concentration) values ranging from 0.9 to 15.6 µg/mL. The investigation regarding toxicity on human lung cells (MRC-5 and A549 lines) revealed MAC 4 was more selective than MACs 6 and 8, with SI (selectivity index) values ranging from 5.4 to 15.6. In addition, MAC 4 did not demonstrate genotoxic effects on A549 cells and it was more stable than CUR in phosphate buffer (pH 7.4) for 24 h at 37 °C. Fluorescence and phase contrast microscopies indicated that MAC 4 has the ability to disrupt the divisome of Bacillus subtilis without damaging its cytoplasmic membrane. However, biochemical investigations demonstrated that MAC 4 did not affect the GTPase activity of B. subtilis FtsZ, which is the main constituent of the bacterial divisome. These results corroborated that MAC 4 is a promising antitubercular and antibacterial agent.
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Affiliation(s)
- Carlos R Polaquini
- Department of Chemistry and Environmental Sciences, Institute of Biosciences, Humanities and Exact Sciences, São Paulo State University (Unesp), São José do Rio Preto, 15054-000, SP, Brazil
| | - Beatriz C Marques
- Department of Chemistry and Environmental Sciences, Institute of Biosciences, Humanities and Exact Sciences, São Paulo State University (Unesp), São José do Rio Preto, 15054-000, SP, Brazil
| | - Gabriela M Ayusso
- Department of Chemistry and Environmental Sciences, Institute of Biosciences, Humanities and Exact Sciences, São Paulo State University (Unesp), São José do Rio Preto, 15054-000, SP, Brazil
| | - Luana G Morão
- Department of Biochemistry and Microbiology, Institute of Biosciences, São Paulo State University (Unesp), Rio Claro 130506-900, SP, Brazil
| | - Janaína C O Sardi
- Department of Physiological Sciences, Piracicaba Dental School, University of Campinas (Unicamp), Campinas 13414-903, SP, Brazil; School of Pharmaceutical Sciences, Food and Nutrition, Federal University of Mato Grosso do Sul (Ufms), Campo Grande 79070-900, MS, Brazil
| | - Débora L Campos
- Department of Biological Sciences, School of Pharmaceutical Sciences, São Paulo State University (Unesp), Araraquara 14800-903, SP, Brazil
| | - Isabel C Silva
- Department of Biological Sciences, School of Pharmaceutical Sciences, São Paulo State University (Unesp), Araraquara 14800-903, SP, Brazil
| | - Lúcia B Cavalca
- Department of Biochemistry and Microbiology, Institute of Biosciences, São Paulo State University (Unesp), Rio Claro 130506-900, SP, Brazil; Department of Molecular Microbiology, Groningen Biomolecular Sciences and Biotechnology Institute, University of Groningen, 9747 AG Groningen, the Netherlands
| | - Dirk-Jan Scheffers
- Department of Molecular Microbiology, Groningen Biomolecular Sciences and Biotechnology Institute, University of Groningen, 9747 AG Groningen, the Netherlands
| | - Pedro L Rosalen
- Department of Physiological Sciences, Piracicaba Dental School, University of Campinas (Unicamp), Campinas 13414-903, SP, Brazil; School of Dentistry, Federal University of Alfenas (Unifal), Alfenas 37130-000, MG, Brazil
| | - Fernando R Pavan
- Department of Biological Sciences, School of Pharmaceutical Sciences, São Paulo State University (Unesp), Araraquara 14800-903, SP, Brazil
| | - Henrique Ferreira
- Department of Biochemistry and Microbiology, Institute of Biosciences, São Paulo State University (Unesp), Rio Claro 130506-900, SP, Brazil
| | - Luis O Regasini
- Department of Chemistry and Environmental Sciences, Institute of Biosciences, Humanities and Exact Sciences, São Paulo State University (Unesp), São José do Rio Preto, 15054-000, SP, Brazil.
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Kumar Pandey S, Yadava U, Upadhyay A, Sharma ML. Synthesis, biological evaluation and molecular docking studies of novel quinazolinones as antitubercular and antimicrobial agents. Bioorg Chem 2021; 108:104611. [PMID: 33484939 DOI: 10.1016/j.bioorg.2020.104611] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Revised: 12/11/2020] [Accepted: 12/28/2020] [Indexed: 01/12/2023]
Abstract
In the present study, a series of novel quinazolinone hybrids, viz. triazepino-quinazolinones 4, thiazolo-triazolo-quinazolinones 7 and triazolo-quinazolinones 8 have been synthesized from the key intermediate 3-(substituted phenyl)-2-hydrazinoquinazolin-4(3H)-ones 3. All the newly synthesized compounds were characterized by means of spectral (IR, 1H NMR, 13C NMR) and elemental analysis. The target compounds were biologically screened for their in vitro antimicrobial and antitubercular activities against pathogenic strain. The results of bioassay demonstrated that some of the compounds exhibited pronounced antimicrobial activity comparable to that of standard drugs tested under similar conditions. Compounds 4c, 4e, 7e and 8b showed relatively very good inhibitory activity against pathogenic bacteria with minimum inhibitory concentration (MIC) of 2.6 μg/mL, 5.2 μg/mL, while the rest of the compounds showed moderate activity. Compounds 4c and 8b were found to be nearly equipotent with ciprofloxacin against P. aeruginosa with MIC 5.2 μg/mL, while compound 8b was more potent against pathogenic bacteria S. aureus. It is very remarkable that four compounds, 4c, 4e, 7e and 8b showed pronounced antifungal activity against selected pathogenic fungi, A. niger, C. albicans with MIC 2.6 μg/mL and 5.2 μg/mL. The antitubercular activity of synthesized compounds reveal that compound 8b showed better activity than the other compounds with a MIC of 5.2 μg/mL against M. tuberculosis (H37Rv). Molecular docking studies of the compounds were performed to rationalize the inhibitory properties of these compounds and results showed that these compounds have good binding energy and better binding affinity within the active pocket, thus these compounds may be considered as potent inhibitors towards selective targets.
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Affiliation(s)
- Sarvesh Kumar Pandey
- Department of Chemistry, D.D.U. Gorakhpur University, Gorakhpur-273009, UP, India.
| | - Umesh Yadava
- Department of Physics, D.D.U. Gorakhpur University, Gorakhpur-273009, UP, India
| | - Anjali Upadhyay
- Department of Chemistry, D.D.U. Gorakhpur University, Gorakhpur-273009, UP, India
| | - M L Sharma
- Central Department of Chemistry, Tribhuvan University, Kirtipur- 44618, Kathmandu, Nepal
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Satish S, Chitral R, Kori A, Sharma B, Puttur J, Khan AA, Desle D, Raikuvar K, Korkegian A, Martis EAF, Iyer KR, Coutinho EC, Parish T, Nandan S. Design, synthesis and SAR of antitubercular benzylpiperazine ureas. Mol Divers 2021; 26:73-96. [PMID: 33385288 DOI: 10.1007/s11030-020-10158-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Accepted: 11/17/2020] [Indexed: 10/22/2022]
Abstract
N-furfuryl piperazine ureas disclosed by scientists at GSK Tres Cantos were chosen as antimycobacterial hits from a phenotypic whole-cell screen. Bioisosteric replacement of the furan ring in the GSK Tres Cantos molecules with a phenyl ring led to molecule (I) with an MIC of 1 μM against Mtb H37Rv, low cellular toxicity (HepG2 IC50 ~ 80 μM), good DMPK properties and specificity for Mtb. With the aim of delineating the SAR associated with (I), fifty-five analogs were synthesized and screened against Mtb. The SAR suggests that the piperazine ring, benzyl urea and piperonyl moieties are essential signatures of this series. Active compounds in this series are metabolically stable, have low cellular toxicity and are valuable leads for optimization. Molecular docking suggests these molecules occupy the Q0 site of QcrB like Q203. Bioisosteric replacement of N-furfuryl piperazine-1-carboxamides yielded molecule (I) a novel lead with satisfactory PD, metabolism, and toxicity profiles.
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Affiliation(s)
- Sohal Satish
- Ambernath Organics Pvt. Ltd., 222, The Summit Business Bay, Andheri (E), Mumbai, 400 093, India
| | - Rohan Chitral
- Ambernath Organics Pvt. Ltd., 222, The Summit Business Bay, Andheri (E), Mumbai, 400 093, India
| | - Amitkumar Kori
- Ambernath Organics Pvt. Ltd., 222, The Summit Business Bay, Andheri (E), Mumbai, 400 093, India
| | - Basantkumar Sharma
- Ambernath Organics Pvt. Ltd., 222, The Summit Business Bay, Andheri (E), Mumbai, 400 093, India
| | - Jayashree Puttur
- Ambernath Organics Pvt. Ltd., 222, The Summit Business Bay, Andheri (E), Mumbai, 400 093, India
| | - Afreen A Khan
- Department of Pharmaceutical Chemistry, Bombay College of Pharmacy, Kalina, Santacruz (E), Mumbai, 400 098, India
| | - Deepali Desle
- Department of Pharmaceutical Chemistry, Bombay College of Pharmacy, Kalina, Santacruz (E), Mumbai, 400 098, India
| | - Kavita Raikuvar
- Department of Pharmaceutical Chemistry, Bombay College of Pharmacy, Kalina, Santacruz (E), Mumbai, 400 098, India
| | - Aaron Korkegian
- TB Discovery Research, Infectious Disease Research Institute, 1616 Eastlake Avenue E, Suite 400, Seattle, WA, 98102, USA
| | - Elvis A F Martis
- Department of Pharmaceutical Chemistry, Bombay College of Pharmacy, Kalina, Santacruz (E), Mumbai, 400 098, India
| | - Krishna R Iyer
- Department of Pharmaceutical Chemistry, Bombay College of Pharmacy, Kalina, Santacruz (E), Mumbai, 400 098, India
| | - Evans C Coutinho
- Department of Pharmaceutical Chemistry, Bombay College of Pharmacy, Kalina, Santacruz (E), Mumbai, 400 098, India
| | - Tanya Parish
- TB Discovery Research, Infectious Disease Research Institute, 1616 Eastlake Avenue E, Suite 400, Seattle, WA, 98102, USA
| | - Santosh Nandan
- Ambernath Organics Pvt. Ltd., 222, The Summit Business Bay, Andheri (E), Mumbai, 400 093, India.
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Abstract
As we know that, Oxadiazole or furadi azole ring containing derivatives are an important class of heterocyclic compounds. A heterocyclic five-membered ring that possesses two carbons, one oxygen atom, two nitrogen atoms, and two double bonds is known as oxadiazole. They are derived from furan by the replacement of two methylene groups (= CH) with two nitrogen (-N =) atoms. The aromaticity was reduced with the replacement of these groups in the furan ring to such an extent that it shows conjugated diene character. Four different known isomers of oxadiazole were existed such as 1,2,4-oxadiazole, 1,2,3-oxadiazole, 1,2,5-oxadiazole & 1,3,4-oxadiazole. Among them, 1,3,4-oxadiazoles & 1,2,4-oxadiazoles are better known and more widely studied by the researchers due to their broad range of chemical and biological properties. 1,3,4-oxadiazoles have become important synthons in the development of new drugs. The derivatives of the oxadiazole nucleus (1,3,4-oxadiazoles) show various biological activities such as antibacterial, anti-mycobacterial, antitumor, anti-viral and antioxidant activity, etc. as reported in the literature. There are different examples of commercially available drugs which consist of 1,3,4-oxadiazole ring such as nitrofuran derivative (Furamizole) which has strong antibacterial activity, Raltegravir as an antiviral drug and Nesapidil drug is used in anti-arrhythmic therapy. This present review summarized some pharmacological activities and various kinds of synthetic routes for 2, 5-disubstituted 1,3,4-oxadiazole, and their derived products.
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Affiliation(s)
- Ankit Siwach
- Department of Pharmaceutical Sciences, Maharshi Dayanand University, Rohtak, Haryana, India
| | - Prabhakar Kumar Verma
- Department of Pharmaceutical Sciences, Maharshi Dayanand University, Rohtak, Haryana, India.
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Obakiro SB, Kiprop A, Kowino I, Kigondu E, Odero MP, Omara T, Bunalema L. Ethnobotany, ethnopharmacology, and phytochemistry of traditional medicinal plants used in the management of symptoms of tuberculosis in East Africa: a systematic review. Trop Med Health 2020; 48:68. [PMID: 32818019 PMCID: PMC7427981 DOI: 10.1186/s41182-020-00256-1] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Accepted: 08/04/2020] [Indexed: 12/20/2022] Open
Abstract
OBJECTIVE Many studies on the treatment of tuberculosis (TB) using herbal medicines have been undertaken in recent decades in East Africa. The details, however, are highly fragmented. The purpose of this study was to provide a comprehensive overview of the reported medicinal plants used to manage TB symptoms, and to analyze scientific reports on their effectiveness and safety. METHOD A comprehensive literature search was performed in the major electronic databases regarding medicinal plants used in the management of TB in East Africa. A total of 44 reports were retrieved, and data were collected on various aspects of the medicinal plants such as botanical name, family, local names, part(s) used, method of preparation, efficacy, toxicity, and phytochemistry. The data were summarized into percentages and frequencies which were presented as tables and graphs. RESULTS A total of 195 species of plants belonging to 68 families and 144 genera were identified. Most encountered species were from Fabaceae (42.6%), Lamiaceae (19.1%), Asteraceae (16.2%), and Euphorbiaceae (14.7%) families. Only 36 medicinal plants (18.5%) have been screened for antimycobacterial activity. Out of these, 31 (86.1%) were reported to be bioactive with minimum inhibitory concentrations ranging from 47 to 12,500 μg/ml. Most tested plant extracts were found to have acceptable acute toxicity profiles with cytotoxic concentrations on normal mammalian cells greater than 200 μg/ml. The most commonly reported phytochemicals were flavonoids, terpenoids, alkaloids, saponins, cardiac glycosides, and phenols. Only Tetradenia riparia, Warburgia ugandensis, and Zanthoxylum leprieurii have further undergone isolation and characterization of the pure bioactive compounds. CONCLUSION East Africa has a rich diversity of medicinal plants that have been reported to be effective in the management of symptoms of TB. More validation studies are required to promote the discovery of antimycobacterial drugs and to provide evidence for standardization of herbal medicine use.
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Affiliation(s)
- Samuel Baker Obakiro
- Department of Pharmacology and Therapeutics, Faculty of Health Sciences, Busitema University, P.O. Box 1460, Mbale, Uganda
- Department of Chemistry and Biochemistry, School of Sciences and Aerospace Studies, Moi University, P.O. Box 3900-30100, Eldoret, Kenya
- Africa Centre of Excellence II in Phytochemicals, Textiles and Renewable Energy (ACE II PTRE), Moi University, P.O. Box 3900-30100, Eldoret, Kenya
| | - Ambrose Kiprop
- Department of Chemistry and Biochemistry, School of Sciences and Aerospace Studies, Moi University, P.O. Box 3900-30100, Eldoret, Kenya
- Africa Centre of Excellence II in Phytochemicals, Textiles and Renewable Energy (ACE II PTRE), Moi University, P.O. Box 3900-30100, Eldoret, Kenya
| | - Isaac Kowino
- Africa Centre of Excellence II in Phytochemicals, Textiles and Renewable Energy (ACE II PTRE), Moi University, P.O. Box 3900-30100, Eldoret, Kenya
- Department of Pure and Applied Chemistry, Faculty of Science, Masinde-Muliro University of Science and Technology, P.O. Box 190-50100, Kakamega, Kenya
| | - Elizabeth Kigondu
- Centre of Traditional Medicine and Drug Research, Kenya Medical Research Institute, P.O. Box 54840-00200, Nairobi, Kenya
| | - Mark Peter Odero
- Department of Chemistry and Biochemistry, School of Sciences and Aerospace Studies, Moi University, P.O. Box 3900-30100, Eldoret, Kenya
- Africa Centre of Excellence II in Phytochemicals, Textiles and Renewable Energy (ACE II PTRE), Moi University, P.O. Box 3900-30100, Eldoret, Kenya
| | - Timothy Omara
- Department of Chemistry and Biochemistry, School of Sciences and Aerospace Studies, Moi University, P.O. Box 3900-30100, Eldoret, Kenya
- Africa Centre of Excellence II in Phytochemicals, Textiles and Renewable Energy (ACE II PTRE), Moi University, P.O. Box 3900-30100, Eldoret, Kenya
- Department of Quality Control and Quality Assurance, Product Development Directory, AgroWays Uganda Limited, Plot 34-60, Kyabazinga Way, P.O. Box 1924, Jinja, Uganda
| | - Lydia Bunalema
- Department of Pharmacology and Therapeutics, School of Biomedical Sciences, Makerere University College of Health Sciences, P.O. Box 7062, Kampala, Uganda
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Bunbamrung N, Intaraudom C, Dramae A, Thawai C, Tadtong S, Auncharoen P, Pittayakhajonwut P. Antibacterial, antitubercular, antimalarial and cytotoxic substances from the endophytic Streptomyces sp. TBRC7642. Phytochemistry 2020; 172:112275. [PMID: 31986449 DOI: 10.1016/j.phytochem.2020.112275] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2019] [Revised: 01/08/2020] [Accepted: 01/13/2020] [Indexed: 05/02/2023]
Abstract
Eight previously undescribed naturally-occurring compounds, including abyssomycins Y - Z, methyl aeruginoate, desferri-ferrithocin-4-hydroxyphenethylester, streptomethiocins A - B, furaquinocin I, and streptolactone, along with eleven known compounds were isolated from the endophytic Streptomyces sp. TBRC7642. The chemical structures were determined based on spectroscopic means including 1D, 2D NMR spectroscopy and mass spectrometry. The absolute configurations were assigned by relying on CD spectra and their optical rotations. In addition, the isolated compounds were evaluated for biological activity, such as antimalarial, antitubercular, antibacterial (both Gram-positive and Gram-negative bacteria), as well as for cytotoxicity against MCF-7, NCI-H187, and Vero cells.
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Affiliation(s)
- Nantiya Bunbamrung
- National Center for Genetic Engineering and Biotechnology (BIOTEC), National Science and Technology Development Agency (NSTDA), Thailand Science Park, Phaholyothin Road, Klong Luang, Pathumthani, 12120, Thailand
| | - Chakapong Intaraudom
- National Center for Genetic Engineering and Biotechnology (BIOTEC), National Science and Technology Development Agency (NSTDA), Thailand Science Park, Phaholyothin Road, Klong Luang, Pathumthani, 12120, Thailand
| | - Aibrohim Dramae
- National Center for Genetic Engineering and Biotechnology (BIOTEC), National Science and Technology Development Agency (NSTDA), Thailand Science Park, Phaholyothin Road, Klong Luang, Pathumthani, 12120, Thailand
| | - Chitti Thawai
- Department of Biology, King Mongkut's Institute of Technology Ladkrabang, Bangkok, 10520, Thailand; Antinobacterial research unit, Faculty of Science, King Mongkut's Institute of Technology Ladkrabang, Bangkok, 10520, Thailand; Center of Excellence in Applied Biosciences, King Mongkut's Institute of Technology Ladkrabang, Bangkok, 10520, Thailand
| | - Sarin Tadtong
- Faculty of Pharmacy, Srinakharinwiroj University, Ongkharak, Nakhon-nayok, 26120, Thailand
| | - Patchanee Auncharoen
- National Center for Genetic Engineering and Biotechnology (BIOTEC), National Science and Technology Development Agency (NSTDA), Thailand Science Park, Phaholyothin Road, Klong Luang, Pathumthani, 12120, Thailand
| | - Pattama Pittayakhajonwut
- National Center for Genetic Engineering and Biotechnology (BIOTEC), National Science and Technology Development Agency (NSTDA), Thailand Science Park, Phaholyothin Road, Klong Luang, Pathumthani, 12120, Thailand.
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Dahiwade LK, Rochlani SP, Choudhari PB, Dhavale RP, More HN. Development of 'S', 'N' Heterocycles as Antimycobacterials Targeting Fatty Acid Biosynthesis. Curr Comput Aided Drug Des 2019; 16:718-724. [PMID: 31625479 DOI: 10.2174/1573409915666191017150843] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Revised: 09/21/2019] [Accepted: 09/28/2019] [Indexed: 11/22/2022]
Abstract
BACKGROUND Mycobacterium tuberculosis is a causative organism of tuberculosis, which is the most deadly disease after cancer in the current decade. The development of multidrug and broadly drug- resistant strains makes the tuberculosis problem more and more critical. In the last 40 years, only one molecule is added to the treatment regimen. Generally, drug design and development programs are targeted proteins whose function is known to be essential to the bacterial cell. OBJECTIVES Here are the development of 'S', 'N' heterocycles as antimycobacterials targeting fatty acid biosynthesis are reported. MATERIALS AND METHODS In the present communication, rational development of anti-mycobacterial agent's targeting fatty acid biosynthesis has been done by integrating the pocket modeling and virtual analysis. RESULTS The identified potential 33 lead compounds were synthesized, characterized by physicochemical and spectroscopic methods like IR, NMR spectroscopy and further screened for antimycobacterial activity using isoniazid as standard. All the designed compounds have shown profound antimycobacterial activity. CONCLUSION In this present communication, we found that 3c, 3f, 3l and 4k molecules had expressive desirable biological activity and specific interactions with fatty acids. Further optimization of these leads is necessary for the development of potential antimycobacterial drug candidates having fewer side effects.
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Affiliation(s)
- Lalita K Dahiwade
- Department of Pharmaceutical Chemistry, Bharati Vidyapeeth College of Pharmacy, Kolhapur, India
| | - Sneha P Rochlani
- Department of Pharmaceutical Chemistry, Bharati Vidyapeeth College of Pharmacy, Kolhapur, India
| | - Prafulla B Choudhari
- Department of Pharmaceutical Chemistry, Bharati Vidyapeeth College of Pharmacy, Kolhapur, India
| | - Rakesh P Dhavale
- Department of Pharmaceutical Chemistry, Bharati Vidyapeeth College of Pharmacy, Kolhapur, India
| | - Harinath N More
- Department of Pharmaceutical Chemistry, Bharati Vidyapeeth College of Pharmacy, Kolhapur, India
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Tiwari AP, Sridhar B, Boshoff HI, Arora K, Gautham Shenoy G, Vandana KE, Varadaraj Bhat G. Design, synthesis, in silico and in vitro evaluation of novel diphenyl ether derivatives as potential antitubercular agents. Mol Divers 2019; 24:1265-1279. [PMID: 31506871 DOI: 10.1007/s11030-019-09990-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2019] [Accepted: 08/24/2019] [Indexed: 11/28/2022]
Abstract
Diphenyl ether derivatives inhibit mycobacterial cell wall synthesis by inhibiting an enzyme, enoyl-acyl carrier protein reductase (InhA), which catalyses the last step in the fatty acid synthesis cycle of genus Mycobacterium. To select and validate a protein crystal structure of enoyl-acyl carrier protein reductase of Mycobacterium tuberculosis for designing inhibitors using molecular modelling, a cross-docking and correlation study was performed. A series of novel 1-(3-(3-hydroxy-4-phenoxyphenyl)-5-phenyl-4,5-dihydro-1H-pyrazol-1-yl) ethan-1-ones were synthesized from this model and screened for their antitubercular activity against M. tuberculosis H37Rv. Compound PYN-8 showed good antitubercular activity on M. tuberculosis H37Rv (MIC = 4-7 µM) and Mycobacterium bovis (% inhibition at 10 µM = 95.91%). Cytotoxicity of all the synthesized derivatives was assessed using various cell lines, and they were found to be safe. Structure of PYN-8 was also confirmed by single-crystal X-ray diffraction. The molecular modelling studies also corroborated the biological activity of the compounds. Further, in silico findings revealed that all these tested compounds exhibited good ADME properties and drug likeness and thus may be considered as potential candidates for further drug development.
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Affiliation(s)
- Ashutosh Prasad Tiwari
- Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, 576104, India
| | - B Sridhar
- X-ray Crystallography Division, CSIR - Indian Institute of Chemical Technology, Hyderabad, 500607, India
| | - Helena I Boshoff
- Tuberculosis Research Section, Laboratory of Clinical Immunology and Microbiology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Kriti Arora
- Tuberculosis Research Section, Laboratory of Clinical Immunology and Microbiology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, 20892, USA
| | - G Gautham Shenoy
- Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, 576104, India
| | - K E Vandana
- Department of Microbiology, Kasturba Medical College, Manipal Academy of Higher Education, Manipal, 576104, India
| | - G Varadaraj Bhat
- Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal, 576104, India.
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Gaikwad N, Nanduri S, Madhavi YV. Cinnamamide: An insight into the pharmacological advances and structure-activity relationships. Eur J Med Chem 2019; 181:111561. [PMID: 31376564 DOI: 10.1016/j.ejmech.2019.07.064] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Revised: 07/11/2019] [Accepted: 07/23/2019] [Indexed: 01/07/2023]
Abstract
The cinnamamide (cinnamic acid amide and cinnamide) is a privileged scaffold present widely in a number of natural products. The scaffold acts as a useful template for designing and arriving at newly drug-like molecules with potential pharmacological activity. An attempt has been made to review the extensive occurrence of cinnamamide scaffold in many lead compounds reported for treating various diseases, their binding interactions with the therapeutic targets as well as mechanism of action and their structure-activity relationships. The discoveries of cinnamamide systems and some examples of unusual cinnamamides having an aromatic, aliphatic, and heterocyclic or other rings condensed to the basic cinnamamide structure also have been extensively covered in this review.
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Affiliation(s)
- Nikhil Gaikwad
- Department of Pharmaceutical Technology and Process Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), 40, Dilip Rd, Jinkalwada, Balanagar, Hyderabad, Telangana, 500037, India
| | - Srinivas Nanduri
- Department of Pharmaceutical Technology and Process Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), 40, Dilip Rd, Jinkalwada, Balanagar, Hyderabad, Telangana, 500037, India
| | - Y V Madhavi
- Department of Pharmaceutical Technology and Process Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), 40, Dilip Rd, Jinkalwada, Balanagar, Hyderabad, Telangana, 500037, India.
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26
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Balaji NV, HariBabu B, Rao VU, Subbaraju GV, Nagasree KP, Kumar MMK. Synthesis, Screening and Docking Analysis of Hispolon Pyrazoles and Isoxazoles as Potential Antitubercular Agents. Curr Top Med Chem 2019; 19:662-682. [PMID: 30834836 DOI: 10.2174/1568026619666190305124954] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2018] [Revised: 10/04/2018] [Accepted: 10/31/2018] [Indexed: 11/22/2022]
Abstract
BACKGROUND Hispolons are natural products known to possess cytoprotective, antioxidant and anti-cancer activities. We have found recently anti TB activity in these compounds. Efforts were made to optimize the structure with bioisosteric replacement of 1,3-diketo functional group with the corresponding pyrazole and isoxazole moieties. OBJECTIVE The goal of this paper is designing new hispolon isoxazole and pyrazole and the evaluation of their biological activities. METHODS The designed compounds were prepared using classical organic synthesis methods. The anti- TB activity was evaluated using the MABA method. RESULTS A total of 44 compounds were synthesized (1a- 1v and 2a-2v) and screened for anti TB activity and antibacterial activity. The compounds 1b and 1n showed the highest potency with MIC 1.6µg/mL against M. tuberculosis H37Rv. CONCLUSION Bioisosteric replacement of 1,3-diketo functional group in hispolons with pyrazole or isoxazole rings have resulted in potent anti TB molecules. Docking simulations of these compounds on mtFabH enzyme resulted in a clear understanding of bioactivity profiles of these compounds. Docking scores are in good agreement with the anti TB activity obtained for these compounds. Computational studies and in vitro screening results indicate mtFabH as the probable target of these compounds.
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Affiliation(s)
- Neduri V Balaji
- Department of Chemistry, Acharya Nagarjuna University, Guntur-AP, India
| | | | - Vanga U Rao
- Department of Chemistry, Acharya Nagarjuna University, Guntur-AP, India
| | - Gottumukkala V Subbaraju
- Natsol Laboratories Private Limited, II Floor, Research & Development Building, Ramky Commercial Hub, J. N. Pharmacity, Visakhapatnam-AP, India
| | - Kurre P Nagasree
- Pharmaceutical Chemistry Division, Vignan Institute of Pharmaceutical Technology, Duvvada, Visakhapatnam-AP, India
| | - Muthyala M K Kumar
- Medicinal Chemistry Research Labs, College of Pharmaceutical Sciences, Andhra University, Visakhapatnam- AP, India
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Garg V, Maurya RK, Thanikachalam PV, Bansal G, Monga V. An insight into the medicinal perspective of synthetic analogs of indole: A review. Eur J Med Chem 2019; 180:562-612. [PMID: 31344615 DOI: 10.1016/j.ejmech.2019.07.019] [Citation(s) in RCA: 160] [Impact Index Per Article: 32.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2019] [Revised: 06/23/2019] [Accepted: 07/06/2019] [Indexed: 01/06/2023]
Abstract
Heterocycles occupy a salient place in chemistry due to their wide range of activity in the fields of drug design, photochemistry, agrochemicals, dyes, and so on. Amongst all, indole scaffold is considered as one of the most promising heterocycles found in natural and synthetic sources and has been shown to possess various biological activity, including anti-inflammatory, anti-HIV, antitubercular, antimalarial, anticonvulsant, antidiabetic, antihypertensive, analgesics, antidepressant, anticancer, antioxidant, antifungal, and antimicrobial, etc. All the reported indole molecules bind to multiple receptors with high affinity, thus expedite the research on the development of novel biologically active compounds through the various approach. In this review, we aimed to highlight synthetic and medicinal perspective on the development of indole-based analogs. In addition, structural activity relationship (SAR) study to correlate for their biological activity also discussed.
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Zhang J, Ba Y, Wang S, Yang H, Hou X, Xu Z. Nitroimidazole-containing compounds and their antibacterial and antitubercular activities. Eur J Med Chem 2019; 179:376-388. [PMID: 31260891 DOI: 10.1016/j.ejmech.2019.06.068] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2019] [Revised: 06/23/2019] [Accepted: 06/24/2019] [Indexed: 11/24/2022]
Abstract
Infections especially tuberculosis caused by various bacteria including mycobacteria result in millions of lives every year, but the control of bacterial infections is challenged by the limitation of effective pharmaceuticals against drug-resistant pathogens. Nitroimidazoles belong to a group of nitroheterocyclic compounds that have broad-spectrum activity against a series of organisms such as mycobacteria, anaerobic Gram-positive and Gram-negative bacteria, and some of them have already been used in clinics or under clinical trials for the treatment of infectious diseases. In this review, we made an overview of the recent advances in nitroimidazole-containing compounds with antibacterial and antitubercular activity in the recent 20 years.
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Affiliation(s)
- Jingyu Zhang
- Pharmacy College, Henan University of Chinese Medicine, 450046, Zhengzhou, PR China
| | - Yanyan Ba
- Pharmacy College, Henan University of Chinese Medicine, 450046, Zhengzhou, PR China
| | - Su Wang
- Pharmacy College, Henan University of Chinese Medicine, 450046, Zhengzhou, PR China
| | - Huaixia Yang
- Pharmacy College, Henan University of Chinese Medicine, 450046, Zhengzhou, PR China
| | - Xuehui Hou
- Faculty of Science, Henan University of Animal Husbandry and Economy, 450046, Zhengzhou, PR China.
| | - Zhi Xu
- Huanghuai University, College of Chemistry and Pharmaceutical Engineering, Zhumadian, PR China.
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Polaquini CR, Morão LG, Nazaré AC, Torrezan GS, Dilarri G, Cavalca LB, Campos DL, Silva IC, Pereira JA, Scheffers DJ, Duque C, Pavan FR, Ferreira H, Regasini LO. Antibacterial activity of 3,3'-dihydroxycurcumin (DHC) is associated with membrane perturbation. Bioorg Chem 2019; 90:103031. [PMID: 31238181 DOI: 10.1016/j.bioorg.2019.103031] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2019] [Revised: 05/24/2019] [Accepted: 06/03/2019] [Indexed: 12/15/2022]
Abstract
Curcumin is a plant diphenylheptanoid and has been investigated for its antibacterial activity. However, the therapeutic uses of this compound are limited due to its chemical instability. In this work, we evaluated the antimicrobial activity of diphenylheptanoids derived from curcumin against Gram-positive and Gram-negative bacteria, and also against Mycobacterium tuberculosis in terms of MIC (Minimum Inhibitory Concentration) and MBC (Minimum Bactericidal Concentration) values. 3,3'-Dihydroxycurcumin (DHC) displayed activity against Enterococcus faecalis, Staphylococcus aureus and M. tuberculosis, demonstrating MIC values of 78 and 156 µg/mL. In addition, DHC was more stable than curcumin in acetate buffer (pH 5.0) and phosphate buffer (pH 7.4) for 24 h at 37 °C. We proposed that membrane and the cell division protein FtsZ could be the targets for DHC due to that fact that curcumin exhibits this mode of antibacterial action. Fluorescence microscopy of Bacillus subtilis stained with SYTO9 and propidium iodide fluorophores indicated that DHC has the ability to perturb the bacterial membrane. On the other hand, DHC showed a weak inhibition of the GTPase activity of B. subtilis FtsZ. Toxicity assay using human cells indicated that DHC has moderate capacity to reduce viability of liver cells (HepG2 line) and lung cells (MRC-5 and A549 lines) when compared with doxorubicin. Alkaline comet assay indicated that DHC was not able to induce DNA damage in A549 cell line. These results indicated that DHC is promising compound with antibacterial and antitubercular activities.
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Affiliation(s)
- Carlos R Polaquini
- Department of Chemistry and Environmental Sciences, Institute of Biosciences, Humanities and Exact Sciences, São Paulo State University (Unesp), São José do Rio Preto 15054-000, Brazil
| | - Luana G Morão
- Department of Biochemistry and Microbiology, Institute of Biosciences, São Paulo State University (Unesp), Rio Claro 13506-900, Brazil
| | - Ana C Nazaré
- Department of Chemistry and Environmental Sciences, Institute of Biosciences, Humanities and Exact Sciences, São Paulo State University (Unesp), São José do Rio Preto 15054-000, Brazil
| | - Guilherme S Torrezan
- Department of Chemistry and Environmental Sciences, Institute of Biosciences, Humanities and Exact Sciences, São Paulo State University (Unesp), São José do Rio Preto 15054-000, Brazil
| | - Guilherme Dilarri
- Department of Biochemistry and Microbiology, Institute of Biosciences, São Paulo State University (Unesp), Rio Claro 13506-900, Brazil
| | - Lúcia B Cavalca
- Department of Biochemistry and Microbiology, Institute of Biosciences, São Paulo State University (Unesp), Rio Claro 13506-900, Brazil; Department of Molecular Microbiology, Groningen Biomolecular Sciences and Biotechnology Institute, University of Groningen, Groningen 9747, the Netherlands
| | - Débora L Campos
- Department of Biological Sciences, School of Pharmaceutical Sciences, São Paulo State University (Unesp), Araraquara 14800-903, Brazil
| | - Isabel C Silva
- Department of Biochemistry and Microbiology, Institute of Biosciences, São Paulo State University (Unesp), Rio Claro 13506-900, Brazil; Department of Biological Sciences, School of Pharmaceutical Sciences, São Paulo State University (Unesp), Araraquara 14800-903, Brazil
| | - Jessé A Pereira
- Department of Pediatric Dentistry and Public Health, School of Dentistry, São Paulo State University (Unesp), Araçatuba 16015-050, Brazil
| | - Dirk-Jan Scheffers
- Department of Molecular Microbiology, Groningen Biomolecular Sciences and Biotechnology Institute, University of Groningen, Groningen 9747, the Netherlands
| | - Cristiane Duque
- Department of Pediatric Dentistry and Public Health, School of Dentistry, São Paulo State University (Unesp), Araçatuba 16015-050, Brazil
| | - Fernando R Pavan
- Department of Biological Sciences, School of Pharmaceutical Sciences, São Paulo State University (Unesp), Araraquara 14800-903, Brazil
| | - Henrique Ferreira
- Department of Biochemistry and Microbiology, Institute of Biosciences, São Paulo State University (Unesp), Rio Claro 13506-900, Brazil.
| | - Luis O Regasini
- Department of Chemistry and Environmental Sciences, Institute of Biosciences, Humanities and Exact Sciences, São Paulo State University (Unesp), São José do Rio Preto 15054-000, Brazil.
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Ambhore AN, Kamble SS, Kadam SN, Kamble RD, Hebade MJ, Hese SV, Gaikwad MV, Meshram RJ, Gacche RN, Dawane BS. Design, synthesis and in silico study of pyridine based 1,3,4-oxadiazole embedded hydrazinecarbothioamide derivatives as potent anti-tubercular agent. Comput Biol Chem 2019; 80:54-65. [PMID: 30901601 DOI: 10.1016/j.compbiolchem.2019.03.002] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2018] [Revised: 03/05/2019] [Accepted: 03/10/2019] [Indexed: 12/15/2022]
Abstract
Development of novel, safe and effective drug candidates combating the emerging drug resistance has remained a major focus in the mainstream of anti-tuberculosis research. Here, we inspired to design and synthesize series of new pyridin-4-yl-1,3,4-oxadiazol-2-yl-thio-ethylidene-hydrazinecarbothioamide derivatives as potential anti-tubercular agents. The anti-tubercular bioactive assay demonstrated that the synthesized compounds exhibit potent anti-tubercular activity (MIC = 3.9-7.81 μg/mL) in comparison with reference drugs Rifampicin and Isoniazid.We employed pharmacophore probing approach for the identification of CYP51 as a possible drug target for the synthesized compounds. To understand the preferable binding mode, the synthesized molecules were docked onto the active site of Sterol 14 α-demethylases (CYP51) target. From the binding free energy of the docking results it was revealed that the compounds were effective CYP51 inhibitors and acts as antitubercular agent.
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Affiliation(s)
- Ajay N Ambhore
- School of Chemical Sciences, Swami Ramanand Teerth Marathwada University, Nanded, MS, 431606, India
| | - Sonali S Kamble
- School of Life Sciences, Swami Ramanand Teerth Marathwada University, Nanded, MS, 431606, India
| | - Shuddhodan N Kadam
- School of Chemical Sciences, Swami Ramanand Teerth Marathwada University, Nanded, MS, 431606, India
| | - Rahul D Kamble
- School of Chemical Sciences, Swami Ramanand Teerth Marathwada University, Nanded, MS, 431606, India
| | - Madhav J Hebade
- School of Chemical Sciences, Swami Ramanand Teerth Marathwada University, Nanded, MS, 431606, India
| | - Shrikant V Hese
- School of Chemical Sciences, Swami Ramanand Teerth Marathwada University, Nanded, MS, 431606, India
| | - Milind V Gaikwad
- School of Chemical Sciences, Swami Ramanand Teerth Marathwada University, Nanded, MS, 431606, India
| | - Rohan J Meshram
- Bioinformatics Centre, Savitribai Phule Pune University, Pune, MS, 411 007, India.
| | - Rajesh N Gacche
- Department of Biotechnology, Savitribai Phule Pune University, Pune, MS, 411 007, India.
| | - Bhaskar S Dawane
- School of Chemical Sciences, Swami Ramanand Teerth Marathwada University, Nanded, MS, 431606, India.
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Zitko J, Doležal M. Old Drugs and New Targets as an Outlook for the Treatment of Tuberculosis. Curr Med Chem 2019; 25:5142-5167. [PMID: 28933298 DOI: 10.2174/0929867324666170920154325] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2016] [Revised: 03/19/2017] [Accepted: 05/26/2017] [Indexed: 11/22/2022]
Abstract
BACKGROUND Despite of the globally positive trends in the epidemiology of tuberculosis, the increasing rates of drug-resistant strains are urging to introduce new antituberculars into clinical practice. Development of a new chemical entity from hit to marketed drug is an extremely time and resources consuming process with uncertain outcome. Repurposing of clinically used drugs can be a cheaper alternative to develop new drugs effective in the treatment of tuberculosis. OBJECTIVE To extract the latest information on new mechanisms of action described or proposed for clinically used antitubercular drugs. To identify drugs from various pharmacodynamic groups as candidates for repurposing to become effective in combatting tuberculosis. Attention will be paid to elucidate the connection between repurposed drugs and new antituberculars in clinical practice or in clinical trials. METHODS Scientific databases were searched for the keywords. RESULTS We reviewed the latest aspects of usage and new mechanisms of action for both first-line and second-line antitubercular drugs in clinical practice. Further, we found that surprisingly large number of clinically used drugs from various pharmacodynamic groups have potential to be used in the treatment of tuberculosis, including antimicrobial drugs not typically used against tuberculosis, statins, CNS drugs (tricyclic phenothiazines, antidepressants, anticonvulsants), non-steroidal anti-inflammatory drugs, kinase inhibitors, and others (metformin, disulfiram, verapamil, lansoprazole). Repurposed drugs may become effective antituberculars, acting either by direct effects on mycobacteria or as adjunct, host-directed therapy. CONCLUSION In this review, we showed that proper research of old drugs is a very efficient tool to develop new antituberculars.
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Affiliation(s)
- Jan Zitko
- Department of Pharmaceutical Chemistry and Pharmaceutical Analysis, Faculty of Pharmacy in Hradec Kralove, Charles University, Hradec Kralove, Czech Republic
| | - Martin Doležal
- Department of Pharmaceutical Chemistry and Pharmaceutical Analysis, Faculty of Pharmacy in Hradec Kralove, Charles University, Hradec Kralove, Czech Republic
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Abstract
The utility of oxazole as intermediates for the synthesis of new chemical entities in medicinal chemistry have been increased in the past few years. Oxazole is an important heterocyclic nucleus having a wide spectrum of biological activities which drew the attention of researchers round the globe to synthesize various oxazole derivatives and screen them for their various biological activities. The present review article aims to review the work reported on therapeutic potentials of oxazole scaffolds which are valuable for medical applications during new millennium.
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Affiliation(s)
- Saloni Kakkar
- Faculty of Pharmaceutical Sciences, Maharshi Dayanand University, Rohtak, 124001 India
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Singh A, Somvanshi P, Grover A. Drug repurposing against arabinosyl transferase (EmbC) of Mycobacterium tuberculosis: Essential dynamics and free energy minima based binding mechanics analysis. Gene 2019; 693:114-126. [PMID: 30716439 DOI: 10.1016/j.gene.2019.01.029] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2018] [Revised: 12/20/2018] [Accepted: 01/02/2019] [Indexed: 01/10/2023]
Abstract
Arabinosyl tranferases (embA, embB, embC) are the key enzymes responsible for biogenesis of arabinan domain of arabinogalactan (AG) and lipoarabinomannan (LAM), two major heteropolysaccharide constituents of the peculiar mycobacterial cell envelope. EmbC is predominantly responsible for LAM synthesis and has been commonly associated with Ethambutol resistance. We have screened the FDA library against EmbC to reposition a drug better than Ethambutol with higher binding affinity to Embc. High throughput virtual screening followed by extra precision docking using Glide gave two best leads i.e. Terlipressin and Amikacin with docking score of -11.39 kcal/mol and -10.71 kcal/mol, respectively. Binding mechanics of the selected drugs was elucidated through long range molecular dynamics simulations (100 ns) using binding free energy rescoring, essential dynamics and free energy minima based approaches, thus revealing the most stable binding modes of Terlipressin with EmbC. Our study establishes the EmbC binding potential of the repurposed drugs Terlipressin and Amikacin.
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Affiliation(s)
- Aditi Singh
- School of Biotechnology, Jawaharlal Nehru University, New Delhi 110067, India; Department of Biotechnology, TERI School of Advanced Studies, Plot No. 10, Vasant Kunj Institutional Area, Vasant Kunj, New Delhi, 110070, India
| | - Pallavi Somvanshi
- Department of Biotechnology, TERI School of Advanced Studies, Plot No. 10, Vasant Kunj Institutional Area, Vasant Kunj, New Delhi, 110070, India.
| | - Abhinav Grover
- School of Biotechnology, Jawaharlal Nehru University, New Delhi 110067, India.
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Varshney E, Tandon M, Saha N, Ali S. In vivo phenotyping of cytochrome 450 isoforms involved in the metabolism of anti-HIV and anti-tubercular drugs in human using cocktail approach: An LC-MS/MS analysis. J Pharm Biomed Anal 2018; 164:698-705. [PMID: 30472588 DOI: 10.1016/j.jpba.2018.11.026] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2018] [Revised: 09/25/2018] [Accepted: 11/11/2018] [Indexed: 12/27/2022]
Abstract
PURPOSE In vivo phenotyping of CYP isoforms involved in the metabolism of anti-HIV and antitubercular drugs is important to determine therapeutic dose levels in HIV/AIDS-TB coinfections. In this study, we used a cocktail of bupropion, losartan and dapsone for in vivo phenotyping of CYP2B6, CYP2C9 and N-acetyltransferase-2 (NAT2) in plasma. CYP2B6 is the main catalyst of anti-HIV efavirenz, while NAT2 is involved in antitubercular drug isoniazid metabolism. CYP2C9 has a significant association with antitubercular drug-induced reactions. The activity level of these isoforms has a significant bearing on therapeutic dose in rapid and poor metabolizers. METHODS Briefly, a cocktail of probe drugs was administered to human volunteers and the drugs and metabolites were determined by an inhouse LC-MS/MS method in 250 μl plasma. The mobile phase and drug/metabolite extraction methods were optimized before analysis. Retention time, Cmax and tmax were calculated from the same sample and the values were used for phenotyping the isoforms. RESULTS Retention time of drugs and metabolites was calculated. The method was sensitive (4.5-8.2 %CV) and no interfering peak was observed in any batch. %Accuracy of the calibrator and QC was 85-115%. %CV of storage stability testing was within FDA approved limits. Cmax and tmax were comparable to the values reported for individual drugs. CONCLUSIONS This study advocates the use of a cocktail of bupropion, losartan and dapsone for in vivo phenotyping of CYP2B6, CYP2C9 and NAT2, which is important in determining therapeutic dose levels of anti-HIV and anti-TB drugs in HIV/AIDS-TB coinfections.
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Affiliation(s)
- Ekta Varshney
- Department of Biochemistry, School of Chemical and Life Science, Jamia Hamdard (Deemed University), Hamdard Nagar, New Delhi, 110062, India
| | - Monika Tandon
- Clinical Pharmacology Unit of Ranbaxy Laboratories Limited at Jamia Hamdard, India
| | - Nilanjan Saha
- Clinical Pharmacology Unit of Ranbaxy Laboratories Limited at Jamia Hamdard, India
| | - Shakir Ali
- Department of Biochemistry, School of Chemical and Life Science, Jamia Hamdard (Deemed University), Hamdard Nagar, New Delhi, 110062, India.
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Makar S, Saha T, Singh SK. Naphthalene, a versatile platform in medicinal chemistry: Sky-high perspective. Eur J Med Chem 2018; 161:252-276. [PMID: 30366253 DOI: 10.1016/j.ejmech.2018.10.018] [Citation(s) in RCA: 74] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2018] [Revised: 10/06/2018] [Accepted: 10/09/2018] [Indexed: 02/01/2023]
Abstract
Naphthalene, a cytotoxic moiety, is an extensively explored aromatic conjugated system with applications in various pathophysiological conditions viz. anticancer, antimicrobial, anti-inflammatory, antiviral, antitubercular, antihypertensive, antidiabetic, anti-neurodegenerative, antipsychotic, anticonvulsant, antidepressant. Naphthalene epoxides and naphthoquinones are most reactive metabolites of naphthalene and are responsible for the covalent interaction with cysteine amino acid of cellular proteins for cytotoxic nature. Many naphthalene derived bioactive phytoconstituents are present in nature including podophyllotoxins (Etoposide, teniposide), bis-ANS 82, Rifampicin, Justiprocumin A, B, Patentiflorin A. The naphthalene-based molecules, viz. Naphyrone, tolnaftate, naftifine, nafcillin, terbinafine, propranolol, nabumetone, nafimidone, naproxen, duloxetine, lasofoxifene, bedaquiline etc. have also been approved by FDA and are being marketed as therapeutics. Thus, the naphthalene scaffold emerges as an important building block in drug discovery owing to its broad spectrum of biological activities through varying structural modifications. This review incorporates the pharmacological aspects of different types of chemically modified naphthalene-based molecules along with their activity profile. This compiled information may serve as a benchmark for the alteration of existing ligands to design novel potent molecules with lesser side effects.
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Affiliation(s)
- Subhajit Makar
- Pharmaceutical Chemistry Research Laboratory, Department of Pharmaceutical Engineering & Technology, Indian Institute of Technology (BHU), Varanasi, 221005, India
| | - Tanmay Saha
- Pharmaceutical Chemistry Research Laboratory, Department of Pharmaceutical Engineering & Technology, Indian Institute of Technology (BHU), Varanasi, 221005, India
| | - Sushil K Singh
- Pharmaceutical Chemistry Research Laboratory, Department of Pharmaceutical Engineering & Technology, Indian Institute of Technology (BHU), Varanasi, 221005, India.
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Patel VM, Patel NB, Chan-Bacab MJ, Rivera G. Synthesis, biological evaluation and molecular dynamics studies of 1,2,4-triazole clubbed Mannich bases. Comput Biol Chem 2018; 76:264-74. [PMID: 30092449 DOI: 10.1016/j.compbiolchem.2018.07.020] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2018] [Revised: 07/28/2018] [Accepted: 07/31/2018] [Indexed: 12/19/2022]
Abstract
The present work highlightsthe synthesis of a newer biologically active Mannich bases contributing 4-((4-fluorobenzylidene)amino)-5-(pyridin-4-yl)-4H-1,2,4-triazole-3-thiol and various heterocyclic amines via N-Mannich reaction by the conventional method as well as microwave heating approach as a part of an environmentally benign synthetic protocol. All the synthesized compounds were characterized by spectral analysis and were screened for in vitro antimicrobial, antitubercular and antiprotozoal activity. The compound 4k was found to be most active respectively against S. aureus (MIC 12.5 μM) and C. albicans (MIC 100 μM). The derivative 4 g displayed potency against L.mexicana and T. cruzi with IC50 value 1.01 and 3.33 μM better than reference drug Miltefosina and Nifurtimox. The compound 4b displayed excellent potency against M. tuberculosis (MIC 6.25 μM) in the primary screening. The computational studies revealed for that Mannich derivative (4b) showed a high affinity toward the active site of enzyme which provides a strong platform for new structure-based design efforts. The Lipinski's parameters showed good drug-likeness properties and can be developed as an oral drug candidate.
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Chaturvedi AK, Verma AK, Thakur JP, Roy S, Bhushan Tripathi S, Kumar BS, Khwaja S, Sachan NK, Sharma A, Chanda D, Shanker K, Saikia D, Negi AS. A novel synthesis of 2-arylbenzimidazoles in molecular sieves-MeOH system and their antitubercular activity. Bioorg Med Chem 2018; 26:4551-4559. [PMID: 30097361 DOI: 10.1016/j.bmc.2018.07.049] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2018] [Revised: 07/27/2018] [Accepted: 07/28/2018] [Indexed: 12/18/2022]
Abstract
Arylbenzimidazoles have been synthesized as antimycobacterial agents. An efficient synthesis has been developed for 2-arylbenzimidazoles from o-phenylenediamines and aromatic aldehydes in molecular sieves-methanol system. The methodology is straightforward to get 2-arylbenzimidazoles (3a-3z) in excellent yields with high chemoselectivity over 2-aryl-1-benzylbenzimidazoles (4a-4z). All these benzimidazole analogues were evaluated against M. tuberculosis in BACTEC radiometric assay. The compounds 4y and 4z exhibited potential antitubercular activity against M. tuberculosis H37RV, MIC at 16 µM and 24 µM respectively. The best compound of the series i.e. compound 4y was well tolerated by Swiss-albino mice in acute oral toxicity. Compound 4y possessing a diarylbenzimidazole core, can further be optimized for better activity.
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Affiliation(s)
- Amit K Chaturvedi
- CSIR-Central Institute of Medicinal and Aromatic Plants (CSIR-CIMAP), P.O. CIMAP, Kukrail Picnic Spot Road, Lucknow 226 015, U.P., India
| | - Amit Kumar Verma
- CSIR-Central Institute of Medicinal and Aromatic Plants (CSIR-CIMAP), P.O. CIMAP, Kukrail Picnic Spot Road, Lucknow 226 015, U.P., India
| | - Jay Prakash Thakur
- CSIR-Central Institute of Medicinal and Aromatic Plants (CSIR-CIMAP), P.O. CIMAP, Kukrail Picnic Spot Road, Lucknow 226 015, U.P., India
| | - Sudeep Roy
- Department of Biomedical Engineering, Faculty of Electrical Engineering and Communication, Brno University of Technology Technická 12, 61200 Brno, Czech Republic
| | - Shashi Bhushan Tripathi
- CSIR-Central Institute of Medicinal and Aromatic Plants (CSIR-CIMAP), P.O. CIMAP, Kukrail Picnic Spot Road, Lucknow 226 015, U.P., India
| | - Balagani Sathish Kumar
- CSIR-Central Institute of Medicinal and Aromatic Plants (CSIR-CIMAP), P.O. CIMAP, Kukrail Picnic Spot Road, Lucknow 226 015, U.P., India
| | - Sadiya Khwaja
- CSIR-Central Institute of Medicinal and Aromatic Plants (CSIR-CIMAP), P.O. CIMAP, Kukrail Picnic Spot Road, Lucknow 226 015, U.P., India
| | - Naresh K Sachan
- CSIR-Central Institute of Medicinal and Aromatic Plants (CSIR-CIMAP), P.O. CIMAP, Kukrail Picnic Spot Road, Lucknow 226 015, U.P., India
| | - Ashok Sharma
- CSIR-Central Institute of Medicinal and Aromatic Plants (CSIR-CIMAP), P.O. CIMAP, Kukrail Picnic Spot Road, Lucknow 226 015, U.P., India
| | - Debabrata Chanda
- CSIR-Central Institute of Medicinal and Aromatic Plants (CSIR-CIMAP), P.O. CIMAP, Kukrail Picnic Spot Road, Lucknow 226 015, U.P., India
| | - Karuna Shanker
- CSIR-Central Institute of Medicinal and Aromatic Plants (CSIR-CIMAP), P.O. CIMAP, Kukrail Picnic Spot Road, Lucknow 226 015, U.P., India
| | - Dharmendra Saikia
- CSIR-Central Institute of Medicinal and Aromatic Plants (CSIR-CIMAP), P.O. CIMAP, Kukrail Picnic Spot Road, Lucknow 226 015, U.P., India.
| | - Arvind S Negi
- CSIR-Central Institute of Medicinal and Aromatic Plants (CSIR-CIMAP), P.O. CIMAP, Kukrail Picnic Spot Road, Lucknow 226 015, U.P., India.
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Faghih MAA, Moslemin MH, Shirvani G, Javaheri M. Preparation of four 1,4-dihydropyridine derivatives (DHPs) labeled with carbon-14. J Labelled Comp Radiopharm 2018; 61:796-798. [PMID: 29791969 DOI: 10.1002/jlcr.3642] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2018] [Revised: 05/09/2018] [Accepted: 05/14/2018] [Indexed: 11/09/2022]
Abstract
The importance of DHPs compounds and the need for examining the mechanism of their effect, mandated us to synthesize a number of carbon-14 labeled 1,4-dihydropyridine derivatives for pharmacological studies. Simple preparation and suitable radiochemical yield were advantages of this preparation.
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Affiliation(s)
| | | | - Gholamhossein Shirvani
- Applied Radiations Research School, Nuclear Science and Technology Research Institute, Tehran, Iran
| | - Mohsen Javaheri
- Applied Radiations Research School, Nuclear Science and Technology Research Institute, Tehran, Iran
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Tapkir AS, Chitlange SS, Bhole RP. Dataset of 2-(2-(4-aryloxybenzylidene) hydrazinyl) benzothiazole derivatives for GQSAR of antitubercular agents. Data Brief 2017; 14:469-473. [PMID: 28831410 PMCID: PMC5554989 DOI: 10.1016/j.dib.2017.08.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2017] [Revised: 08/02/2017] [Accepted: 08/03/2017] [Indexed: 11/28/2022] Open
Abstract
Fragment based Quantitative structure activity relationship (QSAR) analysis on reported 25 2-(2-(4-aryloxybenzylidene) hydrazinyl) benzothiazole dataset as antitubercular agents were carried out. Molecules in the current dataset were fragmented into six fragments (R1, R2, R3, R4, R5, R6).Group based QSAR Models were derived using Multiple linear regression (MLR) analysis and selected on the basis of various statistical parameters. Dataset of benzothiazole reveled importance of presence of halogen atoms on is essential requirement. The generated models will provide structural requirements of benzothiazole derivatives which can be used to design and develop potent antitubercular derivatives.
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Affiliation(s)
- Amit S Tapkir
- Progressive Education Society's, Modern College of Pharmacy, Sector 21, Yamunanagar, Nigdi, Pune 411044, Maharashtra, India
| | - Sohan S Chitlange
- Dr. D. Y. Patil Vidya Pratishthan Society's Dr. D.Y. Patil Institute of Pharmaceutical Sciences & Research, Pimpri, Pune 411018, Maharashtra, India
| | - Ritesh P Bhole
- Dr. D. Y. Patil Vidya Pratishthan Society's Dr. D.Y. Patil Institute of Pharmaceutical Sciences & Research, Pimpri, Pune 411018, Maharashtra, India
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Wang X, Ahn YM, Lentscher AG, Lister JS, Brothers RC, Kneen MM, Gerratana B, Boshoff HI, Dowd CS. Design, synthesis, and evaluation of substituted nicotinamide adenine dinucleotide (NAD +) synthetase inhibitors as potential antitubercular agents. Bioorg Med Chem Lett 2017; 27:4426-30. [PMID: 28827112 DOI: 10.1016/j.bmcl.2017.08.012] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2017] [Revised: 08/05/2017] [Accepted: 08/07/2017] [Indexed: 11/20/2022]
Abstract
Nicotinamide adenine dinucleotide (NAD+) synthetase catalyzes the last step in NAD+ biosynthesis. Depletion of NAD+ is bactericidal for both active and dormant Mycobacterium tuberculosis (Mtb). By inhibiting NAD+ synthetase (NadE) from Mtb, we expect to eliminate NAD+ production which will result in cell death in both growing and nonreplicating Mtb. NadE inhibitors have been investigated against various pathogens, but few have been tested against Mtb. Here, we report on the expansion of a series of urea-sulfonamides, previously reported by Brouillette et al. Guided by docking studies, substituents on a terminal phenyl ring were varied to understand the structure-activity-relationships of substituents on this position. Compounds were tested as inhibitors of both recombinant Mtb NadE and Mtb whole cells. While the parent compound displayed very weak inhibition against Mtb NadE (IC50=1000µM), we observed up to a 10-fold enhancement in potency after optimization. Replacement of the 3,4-dichloro group on the phenyl ring of the parent compound with 4-nitro yielded 4f, the most potent compound of the series with an IC50 value of 90µM against Mtb NadE. Our modeling results show that these urea-sulfonamides potentially bind to the intramolecular ammonia tunnel, which transports ammonia from the glutaminase domain to the active site of the enzyme. This hypothesis is supported by data showing that, even when treated with potent inhibitors, NadE catalysis is restored when treated with exogenous ammonia. Most of these compounds also inhibited Mtb cell growth with MIC values of 19-100µg/mL. These results improve our understanding of the SAR of the urea-sulfonamides, their mechanism of binding to the enzyme, and of Mtb NadE as a potential antitubercular drug target.
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Abstract
High-throughput screening is a valuable way to identify hit compounds that combined with a robust medicinal chemistry program could lead to the identification of new antibiotics. Here, we discuss our method for screening large compound libraries with virulent Mycobacterium tuberculosis, possibly one of the more difficult bacteria to use because of its slow growth and assignment to Biosafety Level-3 by the CDC and NIH. The principles illuminated here, however, are relevant to the execution of most bacteria high-throughput screens.
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Affiliation(s)
- E Lucile White
- High Throughput Screening Center, Southern Research Institute, Birmingham, AL, USA.
| | - Nichole A Tower
- High Throughput Screening Center, Southern Research Institute, Birmingham, AL, USA
| | - Lynn Rasmussen
- High Throughput Screening Center, Southern Research Institute, Birmingham, AL, USA
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Subhedar DD, Shaikh MH, Nawale L, Yeware A, Sarkar D, Khan FAK, Sangshetti JN, Shingate BB. Novel tetrazoloquinoline-rhodanine conjugates: Highly efficient synthesis and biological evaluation. Bioorg Med Chem Lett 2016; 26:2278-83. [PMID: 27013391 DOI: 10.1016/j.bmcl.2016.03.045] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2015] [Revised: 02/22/2016] [Accepted: 03/14/2016] [Indexed: 11/30/2022]
Abstract
In search of new active molecules against Mycobacterium tuberculosis (MTB) H37Ra and Mycobacterium bovis BCG, a small focused library of rhodanine incorporated tetrazoloquinoline has been efficiently synthesized by using [HDBU][HSO4] acidic ionic liquid. The compound 3c found to be promising inhibitor of MTB H37Ra and M. bovis BCG characterized by lower MIC values 4.5 and 2.0 μg/mL, respectively. The active compounds were further tested for cytotoxicity against HeLa, THP-1, A549 and PANC-1 cell lines using MTT assay and showed no significant cytotoxic activity at the maximum concentration evaluated. Again, the synthesized compounds were found to have potential antifungal activity. Furthermore, to rationalize the observed biological activity data, the molecular docking study also been carried out against a potential target Zmp1 enzyme of MTB H37Ra, which revealed a significant correlation between the binding score and biological activity for these compounds. The results of in vitro and in silico study suggest that these compounds possess ideal structural requirement for the further development of novel therapeutic agents.
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Affiliation(s)
- Dnyaneshwar D Subhedar
- Department of Chemistry, Dr. Babasaheb Ambedkar Marathwada University, Aurangabad 431 004, India
| | - Mubarak H Shaikh
- Department of Chemistry, Dr. Babasaheb Ambedkar Marathwada University, Aurangabad 431 004, India
| | - Laxman Nawale
- Combichem Bioresource Center, Organic Chemistry Division, CSIR-National Chemical Laboratory, Pune 411 008, India
| | - Amar Yeware
- Combichem Bioresource Center, Organic Chemistry Division, CSIR-National Chemical Laboratory, Pune 411 008, India
| | - Dhiman Sarkar
- Combichem Bioresource Center, Organic Chemistry Division, CSIR-National Chemical Laboratory, Pune 411 008, India
| | - Firoz A Kalam Khan
- Department of Pharmaceutical Chemistry, Y. B. Chavan College of Pharmacy, Rafiq Zakaria Campus, Aurangabad 431 001, India
| | - Jaiprakash N Sangshetti
- Department of Pharmaceutical Chemistry, Y. B. Chavan College of Pharmacy, Rafiq Zakaria Campus, Aurangabad 431 001, India
| | - Bapurao B Shingate
- Department of Chemistry, Dr. Babasaheb Ambedkar Marathwada University, Aurangabad 431 004, India.
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Shaikh MH, Subhedar DD, Arkile M, Khedkar VM, Jadhav N, Sarkar D, Shingate BB. Synthesis and bioactivity of novel triazole incorporated benzothiazinone derivatives as antitubercular and antioxidant agent. Bioorg Med Chem Lett 2015; 26:561-569. [PMID: 26642768 DOI: 10.1016/j.bmcl.2015.11.071] [Citation(s) in RCA: 76] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2015] [Revised: 11/03/2015] [Accepted: 11/20/2015] [Indexed: 11/19/2022]
Abstract
In search of new active molecules against Mycobacterium tuberculosis (MTB) H37Ra and M. bovis BCG, a small focused library of benzothiazinone based 1,2,3-triazoles has been efficiently prepared via click chemistry approach. Several derivatives were found to be promising inhibitors of MTB and M. bovis BCG characterized by lower MIC values (27.34-29.37μg/mL). Among all the synthesized compounds, 6c and 6e is the most active compound against MTB and M. bovis BCG. The compounds were further tested for anti-proliferative activity against HeLa, A549 and A431 cell lines using MTT assay and showed no significant cytotoxic activity at the maximum concentration evaluated. Further, the synthesized compounds were found to have potential antioxidant activity with IC50 range=14.14-47.11μg/mL. Furthermore, to rationalize the observed biological activity data, the molecular docking study also been carried out against a potential target MTB DprE1, which revealed a significant correlation between the binding score and biological activity for these compounds. The results of the in vitro and in silico study suggest that the triazole incorporated benzothiazinone may possess the ideal structural requirements for further development of novel therapeutic agents.
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Affiliation(s)
- Mubarak H Shaikh
- Department of Chemistry, Dr. Babasaheb Ambedkar Marathwada University, Aurangabad 431 004, India
| | - Dnyaneshwar D Subhedar
- Department of Chemistry, Dr. Babasaheb Ambedkar Marathwada University, Aurangabad 431 004, India
| | - Manisha Arkile
- Combi Chem Bio Resource Centre, National Chemical Laboratory, Pune 411 008, India
| | - Vijay M Khedkar
- Combi Chem Bio Resource Centre, National Chemical Laboratory, Pune 411 008, India; School of Health Sciences, University of KwaZulu Natal, Westville Campus, Durban 4000, South Africa
| | - Nandadeep Jadhav
- Combi Chem Bio Resource Centre, National Chemical Laboratory, Pune 411 008, India
| | - Dhiman Sarkar
- Combi Chem Bio Resource Centre, National Chemical Laboratory, Pune 411 008, India
| | - Bapurao B Shingate
- Department of Chemistry, Dr. Babasaheb Ambedkar Marathwada University, Aurangabad 431 004, India.
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Peraman R, Varma RV, Reddy YP. Re-engineering nalidixic acid's chemical scaffold: A step towards the development of novel anti-tubercular and anti-bacterial leads for resistant pathogens. Bioorg Med Chem Lett 2015; 25:4314-9. [PMID: 26277407 DOI: 10.1016/j.bmcl.2015.07.071] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2015] [Revised: 07/16/2015] [Accepted: 07/21/2015] [Indexed: 11/22/2022]
Abstract
Occurrence of antibacterial and antimycobacterial resistance stimulated a thrust to discover new drugs for infectious diseases. Herein we report the work on re-engineering nalidixic acid's chemical scaffold for newer leads. Stepwise clubbing of quinoxaline, 1,2,4-triazole/1,3,4-oxadiazole with nalidixic acid yielded better compounds. Compounds were screened against ciprofloxacin resistant bacteria and Mycobacterium tuberculosis H37Rv species. Results were obtained as minimum inhibitory concentration, it was evident that molecule with quinoxaline linked azide as side chain served as antitubercular lead (<6.25 μg/ml) whilst molecule with oxadiazole or triazole linked quinoxaline side chain served as anti-bacterial lead. Few compounds were significantly active against Escherichia coli and Proteus vulgaris with MIC less than 0.06 μg/ml and relatively potent than ciprofloxacin. No true compound was potentially active against Salmonella species as compared to amoxicillin.
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Shiju C, Arish D, Bhuvanesh N, Kumaresan S. Synthesis, characterization, and biological evaluation of Schiff base-platinum(II) complexes. Spectrochim Acta A Mol Biomol Spectrosc 2015; 145:213-222. [PMID: 25782179 DOI: 10.1016/j.saa.2015.02.030] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2014] [Revised: 02/06/2015] [Accepted: 02/08/2015] [Indexed: 06/04/2023]
Abstract
The platinum complexes of Schiff base ligands derived from 4-aminoantipyrine and a few substituted aldehydes were synthesized and characterized by elemental analysis, mass, (1)H NMR, IR, electronic spectra, molar conductance, and powder XRD. The structure of one of the ligands L5 was confirmed by a single crystal XRD analysis. The Schiff base ligand crystallized in the triclinic, space group P-1 with a=7.032(2)Ǻ, b=9.479(3)Ǻ, c=12.425(4)Ǻ, α=101.636(3)°, β=99.633(3)°, γ=94.040(3)°, V=795.0(4)Ǻ(3), Z=2, F(000)=352, Dc=1.405 mg/m(3), μ=0.099 mm(-1), R=0.0378, and wR=0.0967. The spectral results show that the Schiff base ligand acts as a bidentate donor coordinating through the azomethine nitrogen and the carbonyl oxygen atoms. The geometrical structures of these complexes are found to be square planar. Antimicrobial studies indicate that these complexes exhibit better activity than the ligand. The anticancer activities of the complexes have also been studied towards human cervical cancer cell line (HeLa), Colon Cancer Cells (HCT116) and Epidermoid Carcinoma Cells (A431) and it was found that the [Pt(L3)Cl2] complex is more active.
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Affiliation(s)
- C Shiju
- Department of Chemistry, Manonmaniam Sundaranar University, Tirunelveli 627 012, TN, India
| | - D Arish
- Department of Chemistry, Manonmaniam Sundaranar University, Tirunelveli 627 012, TN, India
| | - N Bhuvanesh
- Department of Chemistry, Texas A&M University, College Station, TX 77842, USA
| | - S Kumaresan
- Department of Biotechnology, Manonmaniam Sundaranar University, Tirunelveli 627 012, TN, India.
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Keri RS, Sasidhar BS, Nagaraja BM, Santos MA. Recent progress in the drug development of coumarin derivatives as potent antituberculosis agents. Eur J Med Chem 2015; 100:257-69. [PMID: 26112067 DOI: 10.1016/j.ejmech.2015.06.017] [Citation(s) in RCA: 150] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2014] [Revised: 06/05/2015] [Accepted: 06/06/2015] [Indexed: 11/20/2022]
Abstract
Tuberculosis (TB) is still a challenging worldwide health problem and mycobacterium tuberculosis (MTB) remains one of the most deadly human pathogens. TB is the second leading infectious cause of mortality today behind only HIV/AIDS. The impetus for developing new structural classes of antituberculosis drugs comes from the emergence of multi-drug resistant (MDR) strains. The development of MDR strains to commonly used drugs is due to, longer durations of therapy as results of resistance, and the resurgence of the disease in immune compromised patients. Therefore, there is an urgent need to explore new antitubercular (anti-TB) agents. Ironically, the low number of potentially new chemical entities which can act as anti-TB candidates is of great importance at present situation. Considering the severity of the problem, WHO has prepared a strategic plan in Berlin declaration 2007 to stop TB, globally. Among the oxygen heterocycles, coumarin derivatives are important motifs, which can be widely found in many natural products, and many of them displaying diverse biological activities. This spectacular spectrum of applications has intrigued organic and medicinal chemists for decades to explore the natural coumarins or their synthetic analogs for their applicability as anti-TB drugs. To pave the way for the future research, there is a need to collect the latest information in this promising area. In the present review, we collated published reports on coumarin derivatives to shed light on the insights on different types of methods reported for their preparations, characterizations and anti-TB applications, so that its full therapeutic potential class of compounds can be utilized for the treatment of tuberculosis. Therefore, the objective of this review is to focus on important coumarin analogs with anti-TB activities, and structure-activity relationships (SAR) for designing the better anti-TB agents. It is hoped that, this review will be helpful for new thoughts in the quest for rational designs of more active and less toxic coumarin-based anti-TB drugs.
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Gill RK, Rawal RK, Bariwal J. Recent advances in the chemistry and biology of benzothiazoles. Arch Pharm (Weinheim) 2015; 348:155-78. [PMID: 25682746 DOI: 10.1002/ardp.201400340] [Citation(s) in RCA: 91] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2014] [Revised: 11/28/2014] [Accepted: 12/01/2014] [Indexed: 11/09/2022]
Abstract
Benzothiazole is a privileged heterocyclic scaffold having a benzene ring fused with a five-membered thiazole ring. This moiety has attracted considerable attention because of its wide range of pharmacological activities such as antitubercular, antimicrobial, antimalarial, anticonvulsant, anthelmintic, analgesic, anti-inflammatory, antidiabetic, antitumor activity, etc. In the last few years, some novel benzothiazoles have been developed with varied biological activities. To access this scaffold in high yield and to introduce diversity, a variety of new synthetic methods have been invented. In this review, we highlight the development of novel benzothiazoles for various biological activities along with the best synthetic protocols for their synthesis.
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Affiliation(s)
- Rupinder K Gill
- Department of Pharmaceutical Sciences, ISF College of Pharmacy, Moga, Punjab, India; Research Scholar, Punjab Technical University, Jalandhar, Punjab, India
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Dey D, Ray R, Hazra B. Antimicrobial activity of pomegranate fruit constituents against drug-resistant Mycobacterium tuberculosis and β-lactamase producing Klebsiella pneumoniae. Pharm Biol 2015; 53:1474-80. [PMID: 25858784 DOI: 10.3109/13880209.2014.986687] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
CONTEXT The global surge in multi-drug resistant bacteria and the imminence of tuberculosis pandemic necessitate alternative therapeutic approaches to augment the existing medications. Pomegranate, the fruit of Punica granatum Linn. (Punicaceae), widely recognized for potency against a broad spectrum of bacterial pathogens, deserves further investigation in this respect. OBJECTIVE This study determines the therapeutic potential of pomegranate juice, extracts of non-edible peel prepared with methanol/water, and its four polyphenolic constituents, namely caffeic acid, ellagic acid, epigallocatechin-3-gallate (EGCG) and quercetin, against drug-resistant clinical isolates. MATERIALS AND METHODS Phenotypic characterisation of Mycobacterium tuberculosis, extended-spectrum β-lactamase (ESBL) and KPC-type carbapenemase producing Klebsiella pneumoniae was performed by biochemical and molecular methods. Resistance profiles of M. tuberculosis and K. pneumoniae were determined using LJ proportion and Kirby-Bauer methods, respectively. Pomegranate fruit extracts, and the compounds, were evaluated at a dose range of 1024-0.5 µg/mL, and 512-0.25 µg/mL, respectively, to determine minimum inhibitory (MIC) and bactericidal concentrations (MBC) against the drug-resistant isolates by the broth micro-dilution method. RESULTS The peel extracts exhibited greater antimycobacterial activity (MIC 64-1024 μg/mL) than the potable juice (MIC 256 - > 1024 μg/mL). EGCG and quercetin exhibited higher antitubercular (MIC 32-256 μg/mL) and antibacterial (MIC 64-56 μg/mL) potencies than caffeic acid and ellagic acid (MIC 64-512 μg/mL). DISCUSSION AND CONCLUSION The pomegranate fruit peel and pure constituents were active against a broad panel of M. tuberculosis and β-lactamase producing K. pneumoniae isolates. EGCG and quercetin need further investigation for prospective application against respiratory infections.
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Affiliation(s)
- Diganta Dey
- Department of Pharmaceutical Technology, Jadavpur University , Kolkata, West Bengal , India and
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Abstract
In recent years, heterocyclic compounds, analogs, and derivatives have attracted strong interest due to their useful biological and pharmacological properties. The small and simple triazole nucleus is present in compounds aimed at evaluating new entities that possess anti-microbial, anti-tumor, antitubercular, anti-convulsant, anti-depressant, antimalarial, and anti-inflammatory activities. Triazoles display a broad range of biological activities and are found in many potent, biologically active compounds, such as trazodone (antidepressant drug), rizatriptan (antimigrane drug), hexaconazole (antifungal drug) and alprazolam (hyptonic, sedative and tranquilizer drug). So far, modifications of the triazole ring have proven highly effective with improved potency and lesser toxicity. The present review highlights the recently synthesized triazoles possessing important biological activities.
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Affiliation(s)
- Jagdish K Sahu
- Institute of Professional Studies College of Pharmacy, Gwalior 474001, India.
| | - Swastika Ganguly
- Department of Pharmaceutical Sciences, Birla Institute of Technology, Mesra 835215, India
| | - Atul Kaushik
- Institute of Professional Studies College of Pharmacy, Gwalior 474001, India
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Lirio SB, Macabeo APG, Paragas EM, Knorn M, Kohls P, Franzblau SG, Wang Y, Aguinaldo MAM. Antitubercular constituents from Premna odorata Blanco. J Ethnopharmacol 2014; 154:471-474. [PMID: 24768632 DOI: 10.1016/j.jep.2014.04.015] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2013] [Revised: 03/17/2014] [Accepted: 04/07/2014] [Indexed: 06/03/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Premna odorata Blanco (Lamiaceae) is a medicinal plant traditionally used in Albay Province, in southeastern Luzon, Philippines to treat tuberculosis. This study aimed to determine the antitubercular property of the crude extract and sub-extracts of the leaves, and to isolate the bioactive principles from the active fractions. MATERIALS AND METHODS Through extraction, solvent polarity-based fractionation and silica gel chromatography purification of the DCM sub-extract, compound mixtures from the bioactive fractions were isolated and screened for their in vitro antimycobacterial activity against Mycobacterium tuberculosis H37Rv using the colorimetric Microplate Alamar Blue assay (MABA). RESULTS The crude methanolic extract and sub-extracts showed poor inhibitory activity against Mycobacterium tuberculosis H37Rv (MIC≥128µg/mL). However, increased inhibitory potency was observed for fractions eluted from the DCM sub-extract (MIC=54 to 120µg/mL). Further purification of the most active fraction (MIC=54µg/mL) led to the isolation of a 1-heneicosyl formate (1), 4:1 mixture of β-sitosterol (2), stigmasterol (3) and diosmetin (4), which were identified through GC-MS analysis (with dereplication) and NMR experiments. The MIC of compound 1 was 8µg/mL. CONCLUSIONS The results of this study provide scientific basis for the traditional use of Premna odorata as treatment for tuberculosis.
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Affiliation(s)
- Stephen B Lirio
- Graduate School, University of Santo Tomas, España, Manila 1015, Philippines
| | - Allan Patrick G Macabeo
- Graduate School, University of Santo Tomas, España, Manila 1015, Philippines; Phytochemistry Laboratory, Research Center for the Natural and Applied Sciences, Thomas Aquinas Research Complex, University of Santo Tomas, España, Manila 1015, Philippines
| | - Erickson M Paragas
- Phytochemistry Laboratory, Research Center for the Natural and Applied Sciences, Thomas Aquinas Research Complex, University of Santo Tomas, España, Manila 1015, Philippines
| | - Matthias Knorn
- Institut fur Organische Chemie, Universitat Regensburg, Universitatsstrasse 31, 93053 Regensburg, Germany
| | - Paul Kohls
- Institut fur Organische Chemie, Universitat Regensburg, Universitatsstrasse 31, 93053 Regensburg, Germany
| | - Scott G Franzblau
- Institute for Tuberculosis Research, College of Pharmacy, University of Illinois at Chicago, 833 S. Wood Street, Chicago, IL 60612-7231, USA
| | - Yuehong Wang
- Institute for Tuberculosis Research, College of Pharmacy, University of Illinois at Chicago, 833 S. Wood Street, Chicago, IL 60612-7231, USA
| | - Ma Alicia M Aguinaldo
- Graduate School, University of Santo Tomas, España, Manila 1015, Philippines; Phytochemistry Laboratory, Research Center for the Natural and Applied Sciences, Thomas Aquinas Research Complex, University of Santo Tomas, España, Manila 1015, Philippines.
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