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Bendi A, Yadav P, Saini K, Singh Bhathiwal A, Raghav N. A Comprehensive Examination of Heterocyclic Scaffold Chemistry for Antitubercular Activity. Chem Biodivers 2024; 21:e202400067. [PMID: 38500408 DOI: 10.1002/cbdv.202400067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2024] [Revised: 03/18/2024] [Accepted: 03/18/2024] [Indexed: 03/20/2024]
Abstract
Tuberculosis is a communicable disease which affects humans particularly the lungs and is transmitted mainly through air. Despite two decades of intensive research aimed at understanding and combating tuberculosis, persistent biological uncertainties continue to hinder progress. Nowadays, heterocyclic compounds have proven themselves in effective treatment of tuberculosis because of their wide range of biological and pharmacological activities. Antituberculosis or antimycobacterial agents encompass a broad array of compounds utilized singly or in conjunction to combat Mycobacterium infections, spanning from tuberculosis to leprosy. Here, we summarize the synthesis of various heterocyclic compounds which includes the greener synthetic route as well as use of nano compounds as catalyst along with their anti TB activities.
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Affiliation(s)
- Anjaneyulu Bendi
- Department of Chemistry, Presidency University, Rajanukunte, Itgalpura, 560064, Bangalore, India
| | - Priyanka Yadav
- Department of Chemistry, Faculty of Science, SGT University, 122505, Gurugram, Haryana, India
| | - Komal Saini
- Applied Sciences and Humanities, World College of Technology and Management, 122506, Gurugram, Haryana, India
| | - Anirudh Singh Bhathiwal
- Department of Chemistry, Faculty of Science, SGT University, 122505, Gurugram, Haryana, India
| | - Neera Raghav
- Department of Chemistry, Kurukshetra University, 136119, Kurukshetra, Haryana, India
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2
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Sundaramoorthy R, Vadivelu M, Karthikeyan K, Praveen C. Mechanosynthesis of Triazolyl-bis(indolyl)methane Pharmacophores via Gold Catalysis: A Prelude to Their Molecular Electronic Properties and Biological Potency. ChemMedChem 2023; 18:e202200529. [PMID: 36529707 DOI: 10.1002/cmdc.202200529] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Revised: 11/26/2022] [Accepted: 12/17/2022] [Indexed: 12/23/2022]
Abstract
Chemical structures possessing both 1,2,3-triazole and bis(indolyl)methane fragments gained considerable interest in drug synthesis owing to their established biological efficacies. However, 1,2,3-triazoles linked at the bridging position of bis(indolyl)methane is a logical and unexplored design approach. In this regard, nine new triazolyl-bis(indolyl)methane conjugates under AuCl catalyzed ball-milling conditions were accomplished. Comparative evaluation on absorptive and emissive properties of the synthesized dyads were also analyzed. To unravel the influence of different peripheral substituents on the electronic structure and π-orbital properties, theoretical investigations were performed. Screening of molecules for free radical scavenging, anti-inflammatory and antidiabetic showed comparable potency against reference drugs. In particular, compounds 7 h, 7 d and 7 a displayed good efficiency of α-amylase inhibition. The DNA gyrase inhibitory potential of all compounds were assessed in silico which revealed high binding affinity (ΔG=-8.99 Kcal/mol) for 7 i followed by 7 h (ΔG=-7.80 Kcal/mol) with the targeted protein.
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Affiliation(s)
- Ramachandran Sundaramoorthy
- Department of Chemistry, B. S. Abdur Rahman Crescent Institute of Science and Technology, Chennai, 600048, Tamil Nadu, India
| | - Murugan Vadivelu
- Department of Chemistry, B. S. Abdur Rahman Crescent Institute of Science and Technology, Chennai, 600048, Tamil Nadu, India
| | - Kesavan Karthikeyan
- Department of Chemistry, B. S. Abdur Rahman Crescent Institute of Science and Technology, Chennai, 600048, Tamil Nadu, India
| | - Chandrasekar Praveen
- Electrochemical Power Sources Division, CSIR-Central Electrochemical Research Institute, Karaikudi, 630003, Tamil Nadu, India
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3
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Valencia J, Rubio V, Puerto G, Vasquez L, Bernal A, Mora JR, Cuesta SA, Paz JL, Insuasty B, Abonia R, Quiroga J, Insuasty A, Coneo A, Vidal O, Márquez E, Insuasty D. QSAR Studies, Molecular Docking, Molecular Dynamics, Synthesis, and Biological Evaluation of Novel Quinolinone-Based Thiosemicarbazones against Mycobacterium tuberculosis. Antibiotics (Basel) 2022; 12:antibiotics12010061. [PMID: 36671262 PMCID: PMC9854539 DOI: 10.3390/antibiotics12010061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Revised: 12/21/2022] [Accepted: 12/22/2022] [Indexed: 12/31/2022] Open
Abstract
In this study, a series of novel quinolinone-based thiosemicarbazones were designed in silico and their activities tested in vitro against Mycobacterium tuberculosis (M. tuberculosis). Quantitative structure-activity relationship (QSAR) studies were performed using quinolinone and thiosemicarbazide as pharmacophoric nuclei; the best model showed statistical parameters of R2 = 0.83; F = 47.96; s = 0.31, and was validated by several different methods. The van der Waals volume, electron density, and electronegativity model results suggested a pivotal role in antituberculosis (anti-TB) activity. Subsequently, from this model a new series of quinolinone-thiosemicarbazone 11a-e was designed and docked against two tuberculosis protein targets: enoyl-acyl carrier protein reductase (InhA) and decaprenylphosphoryl-β-D-ribose-2'-oxidase (DprE1). Molecular dynamics simulation over 200 ns showed a binding energy of -71.3 to -12.7 Kcal/mol, suggesting likely inhibition. In vitro antimycobacterial activity of quinolinone-thiosemicarbazone for 11a-e was evaluated against M. bovis, M. tuberculosis H37Rv, and six different strains of drug-resistant M. tuberculosis. All compounds exhibited good to excellent activity against all the families of M. tuberculosis. Several of the here synthesized compounds were more effective than the standard drugs (isoniazid, oxafloxacin), 11d and 11e being the most active products. The results suggest that these compounds may contribute as lead compounds in the research of new potential antimycobacterial agents.
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Affiliation(s)
- Jhesua Valencia
- Grupo de Investigación en Química y Biología, Universidad del Norte, Km 5 vía Puerto Colombia, Barranquilla 081007, Colombia
| | - Vivian Rubio
- Grupo de Micobacterias, Red TB Colombia, Dirección de Investigación en Salud Pública, Instituto Nacional de Salud, Bogotá 111321, Colombia
| | - Gloria Puerto
- Grupo de Micobacterias, Red TB Colombia, Dirección de Investigación en Salud Pública, Instituto Nacional de Salud, Bogotá 111321, Colombia
| | - Luisa Vasquez
- Grupo de Micobacterias, Red TB Colombia, Dirección de Investigación en Salud Pública, Instituto Nacional de Salud, Bogotá 111321, Colombia
| | - Anthony Bernal
- Grupo de Investigación en Química y Biología, Universidad del Norte, Km 5 vía Puerto Colombia, Barranquilla 081007, Colombia
| | - José R. Mora
- Grupo de Química Computacional y Teórica (QCT-USFQ), Departamento de Ingeniería Química, Universidad San Francisco de Quito, Diego de Robles y Vía Interoceánica, Quito 170157, Ecuador
| | - Sebastian A. Cuesta
- Grupo de Química Computacional y Teórica (QCT-USFQ), Departamento de Ingeniería Química, Universidad San Francisco de Quito, Diego de Robles y Vía Interoceánica, Quito 170157, Ecuador
- Department of Chemistry, Manchester Institute of Biotechnology, The University of Manchester, 131 Princess Street, Manchester M1 7DN, UK
| | - José Luis Paz
- Departamento Académico de Química Inorgánica, Facultad de Química e Ingeniería Química, Universidad Nacional Mayor de San Marcos, Cercado de Lima 15081, Peru
| | - Braulio Insuasty
- Research Group of Heterocyclic Compounds, Department of Chemistry, Universidad del Valle, A. A., Cali 25360, Colombia
| | - Rodrigo Abonia
- Research Group of Heterocyclic Compounds, Department of Chemistry, Universidad del Valle, A. A., Cali 25360, Colombia
| | - Jairo Quiroga
- Research Group of Heterocyclic Compounds, Department of Chemistry, Universidad del Valle, A. A., Cali 25360, Colombia
| | - Alberto Insuasty
- Grupo de Investigación en Materiales Funcionales Nanoestructurados, Universidad CESMAG, Pasto 520003, Colombia
| | - Andres Coneo
- Medicine Department, Division of Health Sciences, Universidad del Norte, Barranquilla 081007, Colombia
| | - Oscar Vidal
- Medicine Department, Division of Health Sciences, Universidad del Norte, Barranquilla 081007, Colombia
| | - Edgar Márquez
- Grupo de Investigación en Química y Biología, Universidad del Norte, Km 5 vía Puerto Colombia, Barranquilla 081007, Colombia
- Correspondence: (E.M.); (D.I.)
| | - Daniel Insuasty
- Grupo de Investigación en Química y Biología, Universidad del Norte, Km 5 vía Puerto Colombia, Barranquilla 081007, Colombia
- Correspondence: (E.M.); (D.I.)
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4
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Emerging impact of triazoles as anti-tubercular agent. Eur J Med Chem 2022; 238:114454. [PMID: 35597009 DOI: 10.1016/j.ejmech.2022.114454] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Revised: 05/04/2022] [Accepted: 05/08/2022] [Indexed: 01/08/2023]
Abstract
Tuberculosis, a disease of poverty is a communicable infection with a reasonably high mortality rate worldwide. 10 Million new cases of TB were reported with approx 1.4 million deaths in the year 2019. Due to the growing number of drug-sensitive and drug-resistant tuberculosis cases, there is a vital need to develop new and effective candidates useful to combat this deadly disease. Despite tremendous efforts to identify a mechanism-based novel antitubercular agent, only a few have entered into clinical trials in the last six decades. In recent years, triazoles have been well explored as the most valuable scaffolds in drug discovery and development. Triazole framework possesses favorable properties like hydrogen bonding, moderate dipole moment, enhanced water solubility, and also the ability to bind effectively with biomolecular targets of M. tuberculosis and therefore this scaffold displayed excellent potency against TB. This review is an endeavor to summarize an up-to-date innovation of triazole-appended hybrids during the last 10 years having potential in vitro and in vivo antitubercular activity with structure activity relationship analysis. This review may help medicinal chemists to explore the triazole scaffolds for the rational design of potent drug candidates having better efficacy, improved selectivity and minimal toxicity so that these hybrid NCEs can effectively be explored as potential lead to fight against M. tuberculosis.
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5
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Semenya D, Touitou M, Masci D, Ribeiro CM, Pavan FR, Dos Santos Fernandes GF, Gianibbi B, Manetti F, Castagnolo D. Tapping into the antitubercular potential of 2,5-dimethylpyrroles: A structure-activity relationship interrogation. Eur J Med Chem 2022; 237:114404. [PMID: 35486992 DOI: 10.1016/j.ejmech.2022.114404] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Revised: 04/16/2022] [Accepted: 04/18/2022] [Indexed: 01/29/2023]
Abstract
An exploration of the chemical space around a 2,5-dimethylpyrrole scaffold of antitubercular hit compound 1 has led to the identification of new derivatives active against Mycobacterium tuberculosis and multidrug-resistant clinical isolates. Analogues incorporating a cyclohexanemethyl group on the methyleneamine side chain at C3 of the pyrrole core, including 5n and 5q, exhibited potent inhibitory effects against the M. tuberculosis strains, substantiating the essentiality of the moiety to their antimycobacterial activity. In addition, selected derivatives showed promising cytotoxicity profiles against human pulmonary fibroblasts and/or murine macrophages, proved to be effective in inhibiting the growth of intracellular mycobacteria, and elicited either bactericidal effects, or bacteriostatic activity comparable to 1. Computational studies revealed that the new compounds bind to the putative target, MmpL3, in a manner similar to that of known inhibitors BM212 and SQ109.
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Affiliation(s)
- Dorothy Semenya
- School of Cancer and Pharmaceutical Sciences, King's College London, 150 Stamford Street, SE1 9NH, London, United Kingdom
| | - Meir Touitou
- School of Cancer and Pharmaceutical Sciences, King's College London, 150 Stamford Street, SE1 9NH, London, United Kingdom
| | - Domiziana Masci
- School of Cancer and Pharmaceutical Sciences, King's College London, 150 Stamford Street, SE1 9NH, London, United Kingdom
| | - Camila Maringolo Ribeiro
- Tuberculosis Research Laboratory, School of Pharmaceutical Sciences, Sao Paulo State University (UNESP), Rod. Araraquara-Jau, km1, 14800-903, Araraquara, Brazil
| | - Fernando Rogerio Pavan
- Tuberculosis Research Laboratory, School of Pharmaceutical Sciences, Sao Paulo State University (UNESP), Rod. Araraquara-Jau, km1, 14800-903, Araraquara, Brazil
| | | | - Beatrice Gianibbi
- Dipartimento di Biotecnologie, Chimica e Farmacia, Dipartimento di Eccellenza 2018-2022, University of Siena, via A. Moro 2, I-53100, Siena, Italy
| | - Fabrizio Manetti
- Dipartimento di Biotecnologie, Chimica e Farmacia, Dipartimento di Eccellenza 2018-2022, University of Siena, via A. Moro 2, I-53100, Siena, Italy
| | - Daniele Castagnolo
- School of Cancer and Pharmaceutical Sciences, King's College London, 150 Stamford Street, SE1 9NH, London, United Kingdom.
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6
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Siddiqui MM, Nagargoje AA, Raza AK, Pisal PM, Shingate BB. [Et
3
NH][HSO
4
] catalyzed solvent‐free synthesis of new 1,2,3‐triazolidene‐indolinone derivatives. J Heterocycl Chem 2022. [DOI: 10.1002/jhet.4429] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Madiha M. Siddiqui
- Department of Chemistry Dr. Babasaheb Ambedkar Marathwada University Aurangabad India
| | - Amol A. Nagargoje
- Department of Chemistry Dr. Babasaheb Ambedkar Marathwada University Aurangabad India
| | - Akram K. Raza
- Department of Chemistry Dr. Babasaheb Ambedkar Marathwada University Aurangabad India
| | - Parshuram M. Pisal
- School of Chemical Sciences Punyashlok Ahilyadevi Holkar Solapur University Solapur India
| | - Bapurao B. Shingate
- Department of Chemistry Dr. Babasaheb Ambedkar Marathwada University Aurangabad India
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7
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[HDBU][HSO4]-catalyzed facile synthesis of new 1,2,3-triazole-tethered 2,3-dihydroquinazolin-4[1H]-one derivatives and their DPPH radical scavenging activity. RESEARCH ON CHEMICAL INTERMEDIATES 2022. [DOI: 10.1007/s11164-021-04639-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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8
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Bajad NG, Singh SK, Singh SK, Singh TD, Singh M. Indole: A promising scaffold for the discovery and development of potential anti-tubercular agents. CURRENT RESEARCH IN PHARMACOLOGY AND DRUG DISCOVERY 2022; 3:100119. [PMID: 35992375 PMCID: PMC9389259 DOI: 10.1016/j.crphar.2022.100119] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2021] [Revised: 04/13/2022] [Accepted: 07/05/2022] [Indexed: 11/08/2022] Open
Abstract
Indole-containing small molecules have been reported to have diverse pharmacological activities. The aromatic heterocyclic scaffold, which resembles various protein structures, has received attention from organic and medicinal chemists. Exploration of indole derivatives in drug discovery has rapidly yielded a vast array of biologically active compounds with broad therapeutic potential. Nature is the major source of indole scaffolds, but various classical and advanced synthesis methods for indoles have also been reported. One-pot synthesis is widely considered an efficient approach in synthetic organic chemistry and has been used to synthesize some indole compounds. The rapid emergence of drug-resistant tuberculosis is a major challenge to be addressed. Identifying novel targets and drug candidates for tuberculosis is therefore crucial. Researchers have extensively explored indole derivatives as potential anti-tubercular agents or drugs. Indole scaffolds containing the novel non-covalent (decaprenylphosphoryl-β-D-ribose2′-epimerase) DprE1 inhibitor 1,4-azaindole is currently in clinical trials to treat Mycobacterium tuberculosis. In addition, DG167 indazole sulfonamide with potent anti-tubercular activity is undergoing early-stage development in preclinical studies. Indole bearing cationic amphiphiles with high chemical diversity have been reported to depolarize and disrupt the mycobacterial membrane. Some indole-based compounds have potential inhibitory activities against distinct anti-tubercular targets, including the inhibition of cell wall synthesis, replication, transcription, and translation, as summarized in the graphical abstract. The success of computer-aided drug design in the fields of cancer and anti-viral drugs has accelerated in silico studies in antibacterial drug development. This review describes the sources of indole scaffolds, the potential for novel indole derivatives to serve as anti-tubercular agents, in silico findings, and proposed actions to facilitate the design of novel compounds with anti-tubercular activity. The Indole derivatives emerged as an efficient bioactive compoundes with wide range of therapeutic potential. Identifying novel drug candidates with indole derivatives can curtail the rapid emergence of drug-resistant tuberculosis. The current review highlights the sources of indole scaffolds, their derivatives, and in silico findings as anti-tubercular agents. Currently, DprE1 inhibitor 1,4-azaindole and DG167 indazole sulfonamide are in clinical trials to treat Mycobacterium tuberculosis.
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9
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Recent advancements and developments in search of anti-tuberculosis agents: A quinquennial update and future directions. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2021.131473] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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10
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Danne A, Deshpande MV, Sangshetti JN, Khedkar VM, Shingate BB. New 1,2,3-Triazole-Appended Bis-pyrazoles: Synthesis, Bioevaluation, and Molecular Docking. ACS OMEGA 2021; 6:24879-24890. [PMID: 34604669 PMCID: PMC8482464 DOI: 10.1021/acsomega.1c03734] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Indexed: 05/22/2023]
Abstract
The present work describes design of a small library of new 1,2,3-triazole-appended bis-pyrazoles by using a molecular hybridization approach, and the synthesized hybrids were evaluated for their antifungal activity against different fungal strains, namely, Candida albicans, Cryptococcus neoformans, Candida glabrata, Candida tropicalis, Aspergillus niger, and Aspergillus fumigatus. All the compounds exhibited broad-spectrum activity against the tested fungal strains with excellent minimum inhibitory concentration values. The molecular docking study against sterol 14α-demethylase (CYP51) could provide valuable insights into the binding modes and affinity of these compounds. Furthermore, these compounds were also evaluated for their antioxidant activity, which also resulted in promising data.
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Affiliation(s)
- Ashruba
B. Danne
- Department
of Chemistry, Dr. Babasaheb Ambedkar Marathwada
University, Aurangabad 431 004, Maharashtra, India
| | - Mukund V. Deshpande
- Biochemical
Sciences Division, CSIR-National Chemical
Laboratory, Dr. Homi
Bhabha Road, Pune 411008, Maharashtra, India
| | - Jaiprakash N. Sangshetti
- Y.
B. Chavan College of Pharmacy, Dr. Rafiq Zakaria Campus, Aurangabad 431001, Maharashtra, India
| | - Vijay M. Khedkar
- School
of Pharmacy, Vishwakarma University, Pune 411048, Maharashtra, India
| | - Bapurao B. Shingate
- Department
of Chemistry, Dr. Babasaheb Ambedkar Marathwada
University, Aurangabad 431 004, Maharashtra, India
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11
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Triazole-containing hybrids with anti- Mycobacterium tuberculosis potential - Part I: 1,2,3-Triazole. Future Med Chem 2021; 13:643-662. [PMID: 33619989 DOI: 10.4155/fmc-2020-0301] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
Tuberculosis regimens currently applied in clinical practice require months of multidrug therapy, which imposes a major challenge of patient compliance and drug resistance development. Moreover, because of the increasing emergence of hard-to-treat tuberculosis, this disease continues to be a significant threat to the human population. 1,2,3-triazole as a privileged structure has been widely used as an effective template for drug discovery, and 1,2,3-triazole-containing hybrids that can simultaneously act on dual or multiple targets in Mycobacterium tuberculosis have the potential to circumvent drug resistance, enhance efficacy, reduce side effects and improve pharmacokinetic as well as pharmacodynamic profiles. Thus, 1,2,3-triazole-containing hybrids are useful scaffolds for the development of antitubercular agents. This review aims to highlight recent advances of 1,2,3-triazole-containing hybrids with potential activity against various forms of M. tuberculosis, covering articles published between 2015 and 2020. The structure-activity relationship and the mechanism of action are also discussed to facilitate further rational design of more effective drug candidates.
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12
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Kumar S, Sharma B, Mehra V, Kumar V. Recent accomplishments on the synthetic/biological facets of pharmacologically active 1H-1,2,3-triazoles. Eur J Med Chem 2020; 212:113069. [PMID: 33388593 DOI: 10.1016/j.ejmech.2020.113069] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2020] [Revised: 11/23/2020] [Accepted: 11/29/2020] [Indexed: 12/11/2022]
Abstract
The continuous demand of medicinally important scaffolds has prompted the synthetic chemists to identify simple and efficient routes for their synthesis. 1H-1,2,3-triazole, obtained by highly versatile, efficacious and selective "Click Reaction" has become a synthetic/medicinal chemist's favorite not only because of its ability to mimic different functional groups but also due to enhancement in the targeted biological activities. Triazole ring has also been shown to play a critical role in biomolecular mimetics, fragment-based drug design, and bioorthogonal methodologies. In addition, the availability of triazole containing drugs such as fluconazole, furacyclin, etizolam, voriconazole, triozolam etc. in market has underscored the potential of this biologically enriched core in expediting development of new scaffolds. The present review, therefore, is an attempt to highlight the recent synthetic/biological advancements in triazole derivatives that could facilitate the in-depth understanding of its role in the drug discovery process.
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Affiliation(s)
- Sumit Kumar
- Department of Chemistry, Guru Nanak Dev University, Amritsar, 143005, Punjab, India
| | - Bharvi Sharma
- Department of Chemistry, Guru Nanak Dev University, Amritsar, 143005, Punjab, India
| | - Vishu Mehra
- Department of Chemistry, Hindu College, Amritsar, Punjab, 143001, India
| | - Vipan Kumar
- Department of Chemistry, Guru Nanak Dev University, Amritsar, 143005, Punjab, India.
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13
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Campaniço A, Harjivan SG, Warner DF, Moreira R, Lopes F. Addressing Latent Tuberculosis: New Advances in Mimicking the Disease, Discovering Key Targets, and Designing Hit Compounds. Int J Mol Sci 2020; 21:ijms21228854. [PMID: 33238468 PMCID: PMC7700174 DOI: 10.3390/ijms21228854] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2020] [Revised: 11/18/2020] [Accepted: 11/20/2020] [Indexed: 02/06/2023] Open
Abstract
Despite being discovered and isolated more than one hundred years ago, tuberculosis (TB) remains a global public health concern arch. Our inability to eradicate this bacillus is strongly related with the growing resistance, low compliance to current drugs, and the capacity of the bacteria to coexist in a state of asymptomatic latency. This last state can be sustained for years or even decades, waiting for a breach in the immune system to become active again. Furthermore, most current therapies are not efficacious against this state, failing to completely clear the infection. Over the years, a series of experimental methods have been developed to mimic the latent state, currently used in drug discovery, both in vitro and in vivo. Most of these methods focus in one specific latency inducing factor, with only a few taking into consideration the complexity of the granuloma and the genomic and proteomic consequences of each physiological factor. A series of targets specifically involved in latency have been studied over the years with promising scaffolds being discovered and explored. Taking in account that solving the latency problem is one of the keys to eradicate the disease, herein we compile current therapies and diagnosis techniques, methods to mimic latency and new targets and compounds in the pipeline of drug discovery.
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Affiliation(s)
- André Campaniço
- Instituto de Investigação do Medicamento (iMed.ULisboa), Faculdade de Farmácia, Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003 Lisboa, Portugal; (A.C.); (S.G.H.); (R.M.)
| | - Shrika G. Harjivan
- Instituto de Investigação do Medicamento (iMed.ULisboa), Faculdade de Farmácia, Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003 Lisboa, Portugal; (A.C.); (S.G.H.); (R.M.)
| | - Digby F. Warner
- Institute of Infectious Disease and Molecular Medicine, University of Cape Town, Rondebosch 7701, South Africa;
- Department of Pathology, SAMRC/NHLS/UCT Molecular Mycobacteriology Research Unit, University of Cape Town, Rondebosch 7701, South Africa
- Welcome Centre for Infectious Diseases Research in Africa, University of Cape Town, Rondebosch 7701, South Africa
| | - Rui Moreira
- Instituto de Investigação do Medicamento (iMed.ULisboa), Faculdade de Farmácia, Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003 Lisboa, Portugal; (A.C.); (S.G.H.); (R.M.)
| | - Francisca Lopes
- Instituto de Investigação do Medicamento (iMed.ULisboa), Faculdade de Farmácia, Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003 Lisboa, Portugal; (A.C.); (S.G.H.); (R.M.)
- Correspondence:
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14
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Akolkar SV, Nagargoje AA, Shaikh MH, Warshagha MZA, Sangshetti JN, Damale MG, Shingate BB. New N-phenylacetamide-linked 1,2,3-triazole-tethered coumarin conjugates: Synthesis, bioevaluation, and molecular docking study. Arch Pharm (Weinheim) 2020; 353:e2000164. [PMID: 32776355 DOI: 10.1002/ardp.202000164] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Revised: 06/22/2020] [Accepted: 07/11/2020] [Indexed: 12/18/2022]
Abstract
A series of new 1,2,3-triazole-tethered coumarin conjugates linked by N-phenylacetamide was efficiently synthesized via the click chemistry approach in excellent yields. The synthesized conjugates were evaluated for their in vitro antifungal and antioxidant activities. Antifungal activity determination was carried out against fungal strains such as Candida albicans, Fusarium oxysporum, Aspergillus flavus, Aspergillus niger and Cryptococcus neoformans. Compounds 7b, 7d, 7e, 8b and 8e displayed higher potency than the standard drug miconazole, with lower minimum inhibitory concentration values. Also, compound 7a exhibited potential radical scavenging activity as compared with the standard antioxidant butylated hydroxytoluene. In addition, a molecular docking study of the newly synthesized compounds was carried out, and the results showed a good binding mode at the active site of the fungal (C. albicans) P450 cytochrome lanosterol 14α-demethylase enzyme. Furthermore, the synthesized compounds were also tested for ADME properties, and they demonstrated potential as good candidates for oral drugs.
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Affiliation(s)
- Satish V Akolkar
- Department of Chemistry, Dr. Babasaheb Ambedkar Marathwada University, Aurangabad, India
| | - Amol A Nagargoje
- Department of Chemistry, Dr. Babasaheb Ambedkar Marathwada University, Aurangabad, India.,Department of Chemistry, Khopoli Municipal Council College, Khopoli, India
| | - Mubarak H Shaikh
- Department of Chemistry, Dr. Babasaheb Ambedkar Marathwada University, Aurangabad, India.,Department of Chemistry, Radhabai Kale Mahila Mahavidyalaya, Ahmednagar, India
| | - Murad Z A Warshagha
- Department of Chemistry, Dr. Babasaheb Ambedkar Marathwada University, Aurangabad, India
| | - Jaiprakash N Sangshetti
- Department of Pharmaceutical Chemistry, Y. B. Chavan College of Pharmacy, Dr. Rafiq Zakaria Campus, Aurangabad, India
| | - Manoj G Damale
- Department of Pharmaceutical Chemistry, Srinath College of Pharmacy, Aurangabad, India
| | - Bapurao B Shingate
- Department of Chemistry, Dr. Babasaheb Ambedkar Marathwada University, Aurangabad, India
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15
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Song F, Li Z, Bian Y, Huo X, Fang J, Shao L, Zhou M. Indole/isatin-containing hybrids as potential antibacterial agents. Arch Pharm (Weinheim) 2020; 353:e2000143. [PMID: 32667714 DOI: 10.1002/ardp.202000143] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Revised: 06/18/2020] [Accepted: 06/22/2020] [Indexed: 12/11/2022]
Abstract
The emergence and worldwide spread of drug-resistant bacteria have already posed a serious threat to human life, creating the urgent need to develop potent and novel antibacterial drug candidates with high efficacy. Indole and isatin (indole-2,3-dione) present a wide structural and mechanistic diversity, so their derivatives possess various pharmacological properties and occupy a salient place in the development of new drugs. Indole/isatin-containing hybrids, which demonstrate a promising activity against a panel of clinically important Gram-positive and Gram-negative bacteria, are privileged scaffolds for the discovery of novel antibacterial candidates. This review, covering articles published between January 2015 and May 2020, focuses on the development and structure-activity relationship (SAR) of indole/isatin-containing hybrids with potential application for fighting bacterial infections, to facilitate further rational design of novel drug candidates.
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Affiliation(s)
- Feng Song
- Shandong Key Laboratory of Biophysics, Institute of Biophysics, Dezhou University, Dezhou, Shandong, China.,School of Life Sciences, Dezhou University, Dezhou, Shandong, China
| | - Zhenghua Li
- Shandong Key Laboratory of Biophysics, Institute of Biophysics, Dezhou University, Dezhou, Shandong, China
| | - Yunqiang Bian
- Shandong Key Laboratory of Biophysics, Institute of Biophysics, Dezhou University, Dezhou, Shandong, China
| | - Xiankai Huo
- Department of Medical Imaging, Dezhou People's Hospital, Dezhou, Shandong, China
| | - Junman Fang
- School of Life Sciences, Dezhou University, Dezhou, Shandong, China
| | - Linlin Shao
- School of Life Sciences, Dezhou University, Dezhou, Shandong, China
| | - Meng Zhou
- School of Life Sciences, Dezhou University, Dezhou, Shandong, China
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16
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Banari H, Kiyani H, Pourali AR. Bisindolization Reaction Employing Phthalimide-N-sulfonic Acid as an Efficient Catalyst. CURRENT ORGANOCATALYSIS 2020. [DOI: 10.2174/2213337206666191022110730] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Background:
Bis(indolyl) methanes (BIMs) have a wide spectrum of applications in biomedicine
and agriculture as well as are present in natural products. These bisheterocyclic compounds
possess vast pharmacological, including antifungal, antitubercular, anti-inflammatory, antibacterial,
anticancer, anticonvulsant, antibiotic, antiviral, antimalarial, analgesic, and antidiabetic properties.
BIMs scaffolds have also been employed as selective optical chemosensors for detection of some anions
and cations with the naked eye. Because of the importance of these bisheterocycles, various methods
have been reported for their synthesis through reaction of indole derivatives and aldehydes or ketones.
Therefore, the synthesis of BIMs through different methodologies has received widespread attention
in the field of organic synthesis and medicinal chemistry.
Objective:
In this study, the catalytic activity of phthalimide-N-sulfonic acid (PISA) as an efficient and
safe solid acidic organocatalyst toward the synthesis of BIMs derivatives in ethanol is described.
Methods:
Indole derivatives (2 mmol), aryl/heteroaryl aldehydes (1 mmol), and PISA (10 mol%) were
mixture in ethanol. The reaction mixture was stirred at room temperature for the appropriate times.
After workup and separation of catalyst, the corresponding heterocyclic products were obtained
through recrystallization from hot ethanol.
Results:
The BIMs derivatives were easily obtained via Bisindolization Reaction (BIR) of two indoles
(2-methylindole and indole) with a series of aryl and heteroaryl aldehydes. The BIR was efficiently
catalyzed at room temperature using PISA as an excellent organocatalyst under optimized reaction
conditions.
Conclusion:
The reactions were implemented in simple manner and were completed within acceptable
reaction times. The expected BIM products were obtained in satisfactory yields. The catalyst can be
recovered and reused several times in the template reaction. This approach provides the benefits of
convenience, simple operational procedure, no use of hazardous organic solvents, cheapness and ease
of preparation of catalyst.
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Affiliation(s)
- Hoda Banari
- School of Chemistry, Damghan University, Damghan, Iran
| | - Hamzeh Kiyani
- School of Chemistry, Damghan University, Damghan, Iran
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17
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Synthesis and bioevaluation of α,α’-bis(1H-1,2,3-triazol-5-ylmethylene) ketones. CHEMICAL PAPERS 2020. [DOI: 10.1007/s11696-019-00908-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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18
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Acar çevik U, Osmaniye D. 1,2,4-TRİAZOL YAPISI TAŞIYAN BENZOTİYAZOL TÜREVLERİNİN SENTEZİ VE ANTİFUNGAL AKTİVİTELERİ. DÜZCE ÜNIVERSITESI SAĞLIK BILIMLERI ENSTITÜSÜ DERGISI 2020. [DOI: 10.33631/duzcesbed.593379] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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19
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Deshmukh TR, Khare SP, Krishna VS, Sriram D, Sangshetti JN, Khedkar VM, Shingate BB. Synthesis, bioevaluation and molecular docking study of new piperazine and amide linked dimeric 1,2,3-triazoles. SYNTHETIC COMMUN 2019. [DOI: 10.1080/00397911.2019.1695275] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Tejshri R. Deshmukh
- Department of Chemistry, Dr. Babasaheb Ambedkar Marathwada University, Aurangabad, Maharashtra, India
| | - Smita P. Khare
- Department of Chemistry, Dr. Babasaheb Ambedkar Marathwada University, Aurangabad, Maharashtra, India
| | - Vagolu S. Krishna
- Department of Pharmacy, Birla Institute of Technology and Science-Pilani, Hyderabad, Telangana, India
| | - Dharmarajan Sriram
- Department of Pharmacy, Birla Institute of Technology and Science-Pilani, Hyderabad, Telangana, India
| | - Jaiprakash N. Sangshetti
- Department of Pharmaceutical Chemistry, Y. B. Chavan College of Pharmacy, Aurangabad, Maharashtra, India
| | - Vijay M. Khedkar
- Department of Pharmaceutical Chemistry, Shri Vile Parle Kelavani Mandal's Institute of Pharmacy, Dhule, Maharashtra, India
| | - Bapurao B. Shingate
- Department of Chemistry, Dr. Babasaheb Ambedkar Marathwada University, Aurangabad, Maharashtra, India
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20
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Akolkar SV, Kharat ND, Nagargoje AA, Subhedar DD, Shingate BB. Ultrasound-Assisted β-Cyclodextrin Catalyzed One-Pot Cascade Synthesis of Pyrazolopyranopyrimidines in Water. Catal Letters 2019. [DOI: 10.1007/s10562-019-02968-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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21
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Bozorov K, Zhao J, Aisa HA. 1,2,3-Triazole-containing hybrids as leads in medicinal chemistry: A recent overview. Bioorg Med Chem 2019; 27:3511-3531. [PMID: 31300317 PMCID: PMC7185471 DOI: 10.1016/j.bmc.2019.07.005] [Citation(s) in RCA: 371] [Impact Index Per Article: 74.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2019] [Revised: 06/18/2019] [Accepted: 07/03/2019] [Indexed: 12/18/2022]
Abstract
The 1,2,3-triazole ring is a major pharmacophore system among nitrogen-containing heterocycles. These five-membered heterocyclic motifs with three nitrogen heteroatoms can be prepared easily using 'click' chemistry with copper- or ruthenium-catalysed azide-alkyne cycloaddition reactions. Recently, the 'linker' property of 1,2,3-triazoles was demonstrated, and a novel class of 1,2,3-triazole-containing hybrids and conjugates was synthesised and evaluated as lead compounds for diverse biological targets. These lead compounds have been demonstrated as anticancer, antimicrobial, anti-tubercular, antiviral, antidiabetic, antimalarial, anti-leishmanial, and neuroprotective agents. The present review summarises advances in lead compounds of 1,2,3-triazole-containing hybrids, conjugates, and their related heterocycles in medicinal chemistry published in 2018. This review will be useful to scientists in research fields of organic synthesis, medicinal chemistry, phytochemistry, and pharmacology.
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Affiliation(s)
- Khurshed Bozorov
- Key Laboratory of Plant Resources and Chemistry in Arid Regions, Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, 40-1 South Beijing Rd, Urumqi 830011, PR China; Institute of the Chemistry of Plant Substances, Academy of Sciences of Uzbekistan, Mirzo Ulugbek Str. 77, Tashkent 100170, Uzbekistan.
| | - Jiangyu Zhao
- Key Laboratory of Plant Resources and Chemistry in Arid Regions, Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, 40-1 South Beijing Rd, Urumqi 830011, PR China.
| | - Haji A Aisa
- Key Laboratory of Plant Resources and Chemistry in Arid Regions, Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, 40-1 South Beijing Rd, Urumqi 830011, PR China.
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22
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Akolkar SV, Nagargoje AA, Krishna VS, Sriram D, Sangshetti JN, Damale M, Shingate BB. New N-phenylacetamide-incorporated 1,2,3-triazoles: [Et 3NH][OAc]-mediated efficient synthesis and biological evaluation. RSC Adv 2019; 9:22080-22091. [PMID: 35518861 PMCID: PMC9066712 DOI: 10.1039/c9ra03425k] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2019] [Accepted: 06/27/2019] [Indexed: 11/21/2022] Open
Abstract
A facile, highly efficient, and greener method for the synthesis of new 1,4-disubstituted-1,2,3-triazoles was conducted using [Et3NH][OAc] as a medium by the implementation of ultrasound irradiation via click chemistry, affording excellent yields. The present synthetic method exhibited numerous advantages such as mild reaction conditions, excellent product yields, minimal chemical waste, operational simplicity, shorter reaction time, and a wide range of substrate scope. The synthesized compounds were further evaluated for in vitro antifungal activity against five fungal strains, and some of the compounds displayed equivalent or greater potency than the standard drug. A molecular docking study against the modelled three-dimensional structure of cytochrome P450 lanosterol 14α-demethylase was also performed to understand the binding affinity and binding interactions of the enzyme. Furthermore, the synthesized compounds were evaluated for DPPH radical scavenging activity and antitubercular activity against Mycobacterium tuberculosis H37Rv strain.
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Affiliation(s)
- Satish V Akolkar
- Department of Chemistry, Dr. Babasaheb Ambedkar Marathwada University Aurangabad 431 004 India +91-240-2403113 +91-240-2403313
| | - Amol A Nagargoje
- Department of Chemistry, Dr. Babasaheb Ambedkar Marathwada University Aurangabad 431 004 India +91-240-2403113 +91-240-2403313
| | - Vagolu S Krishna
- Department of Pharmacy, Birla Institute of Technology & Science-Hyderabad Campus Jawahar Nagar Hyderabad 500 078 India
| | - Dharmarajan Sriram
- Department of Pharmacy, Birla Institute of Technology & Science-Hyderabad Campus Jawahar Nagar Hyderabad 500 078 India
| | - Jaiprakash N Sangshetti
- Department of Pharmaceutical Chemistry, Y. B. Chavan College of Pharmacy, Dr. Rafiq Zakaria Campus Aurangabad 431 001 India
| | - Manoj Damale
- Department of Pharmaceutical Chemistry, Srinath College of Pharmacy Aurangabad 431136 MS India
| | - Bapurao B Shingate
- Department of Chemistry, Dr. Babasaheb Ambedkar Marathwada University Aurangabad 431 004 India +91-240-2403113 +91-240-2403313
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23
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Khare SP, Deshmukh TR, Sangshetti JN, Khedkar VM, Shingate BB. Ultrasound assisted rapid synthesis, biological evaluation, and molecular docking study of new 1,2,3-triazolyl pyrano[2,3-c]pyrazoles as antifungal and antioxidant agent. SYNTHETIC COMMUN 2019. [DOI: 10.1080/00397911.2019.1631849] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Smita P. Khare
- Department of Chemistry, Dr. Babasaheb Ambedkar Marathwada University, Aurangabad, MH, India
| | - Tejshri R. Deshmukh
- Department of Chemistry, Dr. Babasaheb Ambedkar Marathwada University, Aurangabad, MH, India
| | | | - Vijay M. Khedkar
- Department of Pharmaceutical Chemistry, Shri Vile Parle Kelavani Mandal’s Institute of Pharmacy, Dhule, MH, India
| | - Bapurao B. Shingate
- Department of Chemistry, Dr. Babasaheb Ambedkar Marathwada University, Aurangabad, MH, India
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24
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Deshmukh TR, Khare SP, Krishna VS, Sriram D, Sangshetti JN, Bhusnure O, Khedkar VM, Shingate BB. Design and Synthesis of New Aryloxy‐linked Dimeric 1,2,3‐TriazolesviaClick Chemistry Approach: Biological Evaluation and Molecular Docking Study. J Heterocycl Chem 2019. [DOI: 10.1002/jhet.3608] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Tejshri R. Deshmukh
- Department of ChemistryDr. Babasaheb Ambedkar Marathwada University Aurangabad 431 004 Maharashtra India
| | - Smita P. Khare
- Department of ChemistryDr. Babasaheb Ambedkar Marathwada University Aurangabad 431 004 Maharashtra India
| | - Vagolu S. Krishna
- Department of PharmacyBirla Institute of Technology and Science‐Pilani Hyderabad Campus, Jawahar Nagar Hyderabad 500 078 Telangana India
| | - Dharmarajan Sriram
- Department of PharmacyBirla Institute of Technology and Science‐Pilani Hyderabad Campus, Jawahar Nagar Hyderabad 500 078 Telangana India
| | - Jaiprakash N. Sangshetti
- Department of Pharmaceutical ChemistryY. B. Chavan College of Pharmacy, Dr. Rafiq Zakaria Campus Aurangabad 431 001 Maharashtra India
| | - Omprakash Bhusnure
- Department of Pharmaceutical ChemistryChannabasweshwar College of Pharmacy Latur Maharashtra India
| | - Vijay M. Khedkar
- Department of Pharmaceutical ChemistryShri Vile Parle Kelavani Mandal's Institute of Pharmacy Dhule 424 001 Maharashtra India
| | - Bapurao B. Shingate
- Department of ChemistryDr. Babasaheb Ambedkar Marathwada University Aurangabad 431 004 Maharashtra India
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25
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Khare SP, Deshmukh TR, Akolkar SV, Sangshetti JN, Khedkar VM, Shingate BB. New 1,2,3-triazole-linked tetrahydrobenzo[b]pyran derivatives: Facile synthesis, biological evaluation and molecular docking study. RESEARCH ON CHEMICAL INTERMEDIATES 2019. [DOI: 10.1007/s11164-019-03906-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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26
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One-pot facile synthesis of novel 1,2,3-triazole-appended α-aminophosphonates. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2018. [DOI: 10.1007/s13738-018-1571-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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27
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Saehlim N, Kasemsuk T, Sirion U, Saeeng R. One-Pot Approach for the Synthesis of Bis-indole-1,4-disubstituted-1,2,3-triazoles. J Org Chem 2018; 83:13233-13242. [PMID: 30298733 DOI: 10.1021/acs.joc.8b02056] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
A new strategy for the synthesis of bis-indoletriazoles was developed using a sequential one-pot four-step procedure via I2 and H2SO4-SiO2 catalyzed Friedel-Crafts reactions of indole with aldehyde followed by N-alkylation with propargyl bromide, azidation, and copper(I)-catalyzed azide alkyne cycloaddition (CuAAC). The reaction proceeded smoothly at room temperature in a short time, and a series of bis-indoletriazoles were obtained in good to excellent yields proving the generality of this one-pot methodology.
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Affiliation(s)
- Natthiya Saehlim
- Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science , Burapha University , Sangesook , Chonburi 20131 , Thailand
| | - Teerapich Kasemsuk
- Department of Chemistry, Faculty of Science and Technology , RambhaiBarni Rajabhat University , Chanthaburi , 22000 , Thailand
| | - Uthaiwan Sirion
- Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science , Burapha University , Sangesook , Chonburi 20131 , Thailand
| | - Rungnapha Saeeng
- Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science , Burapha University , Sangesook , Chonburi 20131 , Thailand
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