1
|
Xu Y, Zhao N, Li F, Wang C, Xie H, Wu J, Cheng L, Wang L, Wang Z. Application of Vitreoscilla Hemoglobin as a Green and Efficient Biocatalyst for the Synthesis of Benzoxazoles in Water. Chembiochem 2024; 25:e202300609. [PMID: 37877236 DOI: 10.1002/cbic.202300609] [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: 09/03/2023] [Revised: 10/23/2023] [Accepted: 10/24/2023] [Indexed: 10/26/2023]
Abstract
We report an efficient and eco-friendly method for the Vitreoscilla hemoglobin (VHb)-catalyzed synthesis of benzoxazoles in water at room temperature. tert-Butyl hydroperoxide and 2,2,6,6-tetramethyl-1-piperidinyloxy were used as oxidant and radical scavenger, respectively. A total of 27 functionally diverse benzoxazoles were prepared in moderate to high yields (62 %-94 %) by the annulation reaction of phenols with amines in the presence of VHb in 1 h. Thus, this method is highly viable for practical applications. This work broadens the application of hemoglobin to organic synthesis.
Collapse
Affiliation(s)
- Yaning Xu
- Key Laboratory of Molecular Enzymology and Engineering of Ministry of Education, College of Life Sciences, Jilin University, Changchun, 130023, P. R. China
| | - Nan Zhao
- Key Laboratory of Molecular Enzymology and Engineering of Ministry of Education, College of Life Sciences, Jilin University, Changchun, 130023, P. R. China
| | - Fengxi Li
- Key Laboratory of Molecular Enzymology and Engineering of Ministry of Education, College of Life Sciences, Jilin University, Changchun, 130023, P. R. China
| | - Chunyu Wang
- State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun, 130023, P. R. China
| | - Hanqing Xie
- Key Laboratory of Molecular Enzymology and Engineering of Ministry of Education, College of Life Sciences, Jilin University, Changchun, 130023, P. R. China
| | - Junhao Wu
- Key Laboratory of Molecular Enzymology and Engineering of Ministry of Education, College of Life Sciences, Jilin University, Changchun, 130023, P. R. China
| | - Lei Cheng
- Key Laboratory of Molecular Enzymology and Engineering of Ministry of Education, College of Life Sciences, Jilin University, Changchun, 130023, P. R. China
| | - Lei Wang
- Key Laboratory of Molecular Enzymology and Engineering of Ministry of Education, College of Life Sciences, Jilin University, Changchun, 130023, P. R. China
| | - Zhi Wang
- Key Laboratory of Molecular Enzymology and Engineering of Ministry of Education, College of Life Sciences, Jilin University, Changchun, 130023, P. R. China
| |
Collapse
|
2
|
Yadav R, Meena D, Singh K, Tyagi R, Yadav Y, Sagar R. Recent advances in the synthesis of new benzothiazole based anti-tubercular compounds. RSC Adv 2023; 13:21890-21925. [PMID: 37483662 PMCID: PMC10359851 DOI: 10.1039/d3ra03862a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Accepted: 07/07/2023] [Indexed: 07/25/2023] Open
Abstract
This review highlights the recent synthetic developments of benzothiazole based anti-tubercular compounds and their in vitro and in vivo activity. The inhibitory concentrations of the newly synthesized molecules were compared with the standard reference drugs. The better inhibition potency was found in new benzothiazole derivatives against M. tuberculosis. Synthesis of benzothiazole derivatives was achieved through various synthetic pathways including diazo-coupling, Knoevenagel condensation, Biginelli reaction, molecular hybridization techniques, microwave irradiation, one-pot multicomponent reactions etc. Other than recent synthetic developments, mechanism of resistance of anti-TB drugs is also incorporated in this review. Structure activity relationships of the new benzothiazole derivatives along with the molecular docking studies of selected compounds have been discussed against the target DprE1 in search of a potent inhibitor with enhanced anti-tubercular activity.
Collapse
Affiliation(s)
- Rakhi Yadav
- Glycochemistry Laboratory, School of Physical Sciences, Jawaharlal Nehru University New Delhi-110067 India
| | - Dilkhush Meena
- Glycochemistry Laboratory, School of Physical Sciences, Jawaharlal Nehru University New Delhi-110067 India
| | - Kavita Singh
- Glycochemistry Laboratory, School of Physical Sciences, Jawaharlal Nehru University New Delhi-110067 India
| | - Rajdeep Tyagi
- Glycochemistry Laboratory, School of Physical Sciences, Jawaharlal Nehru University New Delhi-110067 India
| | - Yogesh Yadav
- Glycochemistry Laboratory, School of Physical Sciences, Jawaharlal Nehru University New Delhi-110067 India
| | - Ram Sagar
- Glycochemistry Laboratory, School of Physical Sciences, Jawaharlal Nehru University New Delhi-110067 India
| |
Collapse
|
3
|
Anjirwala SN, Parmar PS, Patel SK. Synthetic protocols for non-fused pyrimidines. SYNTHETIC COMMUN 2022. [DOI: 10.1080/00397911.2022.2137682] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Affiliation(s)
| | - Parnas S. Parmar
- Department of Chemistry, Veer Narmad South Gujarat University, Surat, India
| | - Saurabh K. Patel
- Department of Chemistry, Veer Narmad South Gujarat University, Surat, India
| |
Collapse
|
4
|
2-Phenyl substituted Benzimidazole derivatives: Design, synthesis, and evaluation of their antiproliferative and antimicrobial activities. Med Chem Res 2022. [DOI: 10.1007/s00044-022-02900-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
5
|
Bait S, Shinde S, Adivarekar R, Sekar N. ESIPT Core Containing Benzothiazole and Benzimidazole Based Fluorescent Acid Azo Dyes for Protein Fiber: Synthesis, Spectral Characteristics, and Fastness Evaluation. Polycycl Aromat Compd 2022. [DOI: 10.1080/10406638.2022.2061534] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
| | - Suvidha Shinde
- Institute of Chemical Technology, Matunga, Mumbai, India
| | | | - Nagaiyan Sekar
- Institute of Chemical Technology, Matunga, Mumbai, India
| |
Collapse
|
6
|
Yang X, Guo X, Yuan X, Chen B. K 2S 2O 8-promoted rearrangement of nitrones for the synthesis of benzo[ d]oxazoles. Org Chem Front 2022. [DOI: 10.1039/d2qo00680d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
An efficient route for the synthesis of valuable benzoxazoles has been developed through self-oxidative cyclization with N–O bond cleavage.
Collapse
Affiliation(s)
- Xueying Yang
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, Department of Chemistry, Lanzhou University, Lanzhou, Gansu, China
| | - Xin Guo
- School of Chemistry and Chemical Engineering, North Minzu University, Yinchuan, China
| | - Xinglong Yuan
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, Department of Chemistry, Lanzhou University, Lanzhou, Gansu, China
| | - Baohua Chen
- State Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, Department of Chemistry, Lanzhou University, Lanzhou, Gansu, China
| |
Collapse
|
7
|
Hussain Basha N, Narendra Babu K, Siva Shanker P, Dinneswara Reddy G, Padmaja A, Padmavathi V. Synthesis of Pyrimidinyl Benzazolyl Urea Derivatives as Antimicrobial and Antioxidant Agents. Polycycl Aromat Compd 2021. [DOI: 10.1080/10406638.2021.1998153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- N. Hussain Basha
- Department of Chemistry, Sri Venkateswara University, Tirupati, Andhra Pradesh, India
| | - K. Narendra Babu
- Department of Chemistry, Sri Venkateswara University, Tirupati, Andhra Pradesh, India
| | - P. Siva Shanker
- Department of Chemistry, Sri Venkateswara University, Tirupati, Andhra Pradesh, India
| | | | - A. Padmaja
- Department of Chemistry, Sri Venkateswara University, Tirupati, Andhra Pradesh, India
| | - V. Padmavathi
- Department of Chemistry, Sri Venkateswara University, Tirupati, Andhra Pradesh, India
| |
Collapse
|
8
|
Nazeef M, Shivhare KN, Ali S, Ansari S, Siddiqui IR. Visible-light-mediated one-pot efficient synthesis of 1-aryl-1H,3H-thiazolo[3,4-a]benzimidazoles: a metal-free photochemical approach in aqueous ethanol. Mol Divers 2021; 25:2479-2486. [PMID: 32980996 DOI: 10.1007/s11030-020-10145-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2020] [Accepted: 09/16/2020] [Indexed: 01/10/2023]
Abstract
A new metal-free approach to construct medicinally valuable 1-aryl-1H,3H-thiazolo[3,4-a]benzimidazoles under visible light irradiation in aqueous ethanol medium at room temperature has been developed. The present process was performed with 1,2-phenylenediamines, aromatic aldehydes and 2-mercaptoacetic acid utilizing a simple household 22 W compact fluorescent lamp to generate C-S, C-N bonds through radical intermediates. This visible-light-promoted synthesis provides lower cost, operation simplicity and high functional groups tolerating ability with short reaction time and high yield under mild reaction conditions.
Collapse
Affiliation(s)
- Mohd Nazeef
- Laboratory of Green Synthesis, Department of Chemistry, University of Allahabad, Allahabad, 211002, India
| | - Km Neha Shivhare
- Laboratory of Green Synthesis, Department of Chemistry, University of Allahabad, Allahabad, 211002, India
| | - Shabir Ali
- Department of Chemistry, Aligarh Muslim University, Aligarh, 202002, India
| | - Saif Ansari
- Laboratory of Green Synthesis, Department of Chemistry, University of Allahabad, Allahabad, 211002, India
| | - I R Siddiqui
- Laboratory of Green Synthesis, Department of Chemistry, University of Allahabad, Allahabad, 211002, India.
| |
Collapse
|
9
|
Benzothiazoles from Condensation of o-Aminothiophenoles with Carboxylic Acids and Their Derivatives: A Review. Molecules 2021; 26:molecules26216518. [PMID: 34770926 PMCID: PMC8587170 DOI: 10.3390/molecules26216518] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Revised: 10/14/2021] [Accepted: 10/21/2021] [Indexed: 01/27/2023] Open
Abstract
Nowadays, organic chemists are interested in the field of heterocyclic chemistry due to its use in the synthesis of a great variety of biologically active compounds. Heterocyclic compounds are widely found in nature and are essential for life. Among these, some natural nitrogen containing heterocyclic compounds have been used as chemotherapeutic agents. Their attachment to sugar molecules either as thioglycosides or as nucleosides analogues plays an important role in vital biological processes as well as in synthetic organic chemistry. Molecules containing benzothiazole (BT) nuclei are of this interesting class of compounds because some of them have been found to have a wide variety of biological activities. In this sense, we selected this topic to review and to then summarize the procedures related to the condensation reactions of o-aminothiophenoles (ATPs) as well as their disulfides with carboxylic acids, esters, orthoesters, acyl chlorides, amides, and nitriles. The condensation reactions with carbon dioxide (CO2) are included. Conventional methods with the use of acid and metal catalysts as well as recent green techniques, such as microwave irradiation, the use of ionic liquids, and ultrasound (US) chemistry, which have proven to have many advantages, were found in the review.
Collapse
|
10
|
Chaurasia H, Singh VK, Mishra R, Yadav AK, Ram NK, Singh P, Singh RK. Molecular modelling, synthesis and antimicrobial evaluation of benzimidazole nucleoside mimetics. Bioorg Chem 2021; 115:105227. [PMID: 34399320 DOI: 10.1016/j.bioorg.2021.105227] [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] [Received: 05/26/2021] [Revised: 07/20/2021] [Accepted: 07/28/2021] [Indexed: 01/23/2023]
Abstract
A series of new N-1-(β-d-ribofuranosyl) benzimidazole derivatives has been designed using in silico methods and synthesized as probable antimicrobial agents. Further, the compounds were assessed for their antibacterial and antifungal activity. Antibacterial screening was done by employing broth micro-dilution method and compounds exhibited excellent inhibitory activity (MIC, 50-1.56 µg/mL) against different human pathogenic bacteria, viz. B. cerus, B. subtilis, S. aureus, E. coli and P. aeruginosa and drug resistant strain (DRS) of E. coli. A great synergistic effect was observed during evaluation of ∑FIC, where a combination study was performed using standard references, viz. chloramphenicol and kanamycin. The MIC data obtained from different methods of combination approach revealed 4-128 fold more potency compared to compounds tested alone. The results clearly indicated the possibility of these compounds as active ingredients of drug regimen used against MDR strains. Antifungal screening were also performed employing two different methods, viz. serial dilution method and zone inhibition method, clearly indicated that compounds were also potentially active against several species of pathogenic fungal strains, viz. A. flavus, A. niger, F. oxysporum and C. albicans. The assessment of structure activity relationship (SAR) clearly revealed that presence of less polar and more hydrophobic substituents positively favours the antibacterial activity, conversely, more polar and hydrophilic substituents favours the antifungal activities. Thus, the results positively endorsed the compounds as potent antibacterial and antifungal agents which could be developed as possible drug regimens.
Collapse
Affiliation(s)
- Himani Chaurasia
- Bioorganic Research Laboratory, Department of Chemistry, University of Allahabad, Prayagraj 211002, India
| | - Vishal K Singh
- Bioorganic Research Laboratory, Department of Chemistry, University of Allahabad, Prayagraj 211002, India
| | - Richa Mishra
- Bioorganic Research Laboratory, Department of Chemistry, University of Allahabad, Prayagraj 211002, India
| | - Aditya K Yadav
- Bioorganic Research Laboratory, Department of Chemistry, University of Allahabad, Prayagraj 211002, India
| | - Nand K Ram
- Bioorganic Research Laboratory, Department of Chemistry, University of Allahabad, Prayagraj 211002, India
| | - Prashant Singh
- Bioorganic Research Laboratory, Department of Chemistry, University of Allahabad, Prayagraj 211002, India
| | - Ramendra K Singh
- Bioorganic Research Laboratory, Department of Chemistry, University of Allahabad, Prayagraj 211002, India.
| |
Collapse
|
11
|
Mathapati SR, Patil KN, Mathakari SS, Suryawanshi AW, Jadhav AH. Fluorinated phosphoric acid as a versatile effective catalyst for synthesis of series of benzimidazoles, benzoxazoles and benzothiazoles at room temperature. PHOSPHORUS SULFUR 2021. [DOI: 10.1080/10426507.2020.1871345] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Sushil R. Mathapati
- Department of Chemistry, Shri Madhavrao Patil Mahavidyalaya, Affiliated to Dr. Babasaheb Ambedkar Marathwada University, Aurangabad, India
| | - Komal N. Patil
- Centre for Nano and Material Sciences (CNMS), Jain University, Bangalore, Karnataka, India
| | - Sujit S. Mathakari
- Department of Chemistry, Shri Madhavrao Patil Mahavidyalaya, Affiliated to Dr. Babasaheb Ambedkar Marathwada University, Aurangabad, India
| | - Appasaheb W. Suryawanshi
- Department of Chemistry, Shri Madhavrao Patil Mahavidyalaya, Affiliated to Dr. Babasaheb Ambedkar Marathwada University, Aurangabad, India
| | - Arvind H. Jadhav
- Centre for Nano and Material Sciences (CNMS), Jain University, Bangalore, Karnataka, India
| |
Collapse
|
12
|
Küçükbay H, Uçkun M, Apohan E, Yeşilada Ö. Cytotoxic and antimicrobial potential of benzimidazole derivatives. Arch Pharm (Weinheim) 2021; 354:e2100076. [PMID: 33872394 DOI: 10.1002/ardp.202100076] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Revised: 03/19/2021] [Accepted: 03/25/2021] [Indexed: 11/07/2022]
Abstract
New benzimidazole derivatives were synthesized and their structures were characterized by spectroscopic and microanalysis techniques. The cytotoxic properties of ten benzimidazole derivatives, five of which were synthesized in our previous studies, were determined against the lung cancer cell line, A549, and the healthy lung epithelial cell line, BEAS-2B. Among the ten compounds tested, based on the 72-h incubation results, compound 12 was the most cytotoxic against the A549 cell line, whereas against the BEAS-2B cell line, it was as cytotoxic as cisplatin. The IC50 values of compound 12 were 3.98 and 2.94 µg/ml for A549 and BEAS-2B cells, respectively. The cisplatin values were 6.75 and 2.75 µg/ml for A549 and BEAS-2B cells, respectively. Compounds 10, 8, 7, and 13 showed toxic effects against A549 cells, but were less toxic against BEAS-2B cells than cisplatin. The antimicrobial activity of these compounds against pathogenic bacteria and yeasts was also evaluated based on their minimum inhibitory concentration (MIC) values. The compounds, except 12 and 13, generally showed higher antimicrobial activity against yeasts, compared with bacteria. Compound 12 showed better activity against Pseudomonas aeruginosa and Staphylococcus aureus than against Escherichia coli. Compounds 7, 8, and 11 were the most effective ones against the microorganisms, and yeasts were highly sensitive to these compounds with MIC values of 25-100 µg/ml.
Collapse
Affiliation(s)
- Hasan Küçükbay
- Department of Chemistry, Faculty of Arts and Sciences, İnönü University, Malatya, Turkey
| | - Mustafa Uçkun
- Department of Biology, Faculty of Arts and Sciences, İnönü University, Malatya, Turkey
| | - Elif Apohan
- Department of Biology, Faculty of Arts and Sciences, İnönü University, Malatya, Turkey
| | - Özfer Yeşilada
- Department of Biology, Faculty of Arts and Sciences, İnönü University, Malatya, Turkey
| |
Collapse
|
13
|
Fan L, Luo Z, Yang C, Guo B, Miao J, Chen Y, Tang L, Li Y. Design and synthesis of small molecular 2-aminobenzoxazoles as potential antifungal agents against phytopathogenic fungi. Mol Divers 2021; 26:981-992. [PMID: 33811571 PMCID: PMC8019306 DOI: 10.1007/s11030-021-10213-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Accepted: 03/19/2021] [Indexed: 11/30/2022]
Abstract
In order to discover novel antifungal agents, three series of simple 2-aminobenzoxazole derivatives were designed, synthesized and evaluated for their antifungal activities against eight phytopathogenic fungi. The in vitro antifungal results showed that most of the target compounds exhibited excellent and broad-spectrum antifungal activities to all the tested fungi. Particularly, the six compounds 3a, 3b, 3c, 3e, 3m and 3v displayed the most potent antifungal activity, with EC50 value of 1.48–16.6 µg/mL, which were much superior to the positive control hymexazol. The in vivo study further confirmed that compounds 3a, 3c, 3e and 3m displayed good preventative effect against Botrytis cinerea at the concentration of 100 µg/mL. The structure–activity relationships research provides significant reference for the further structural optimization of 2-aminobenzoxazole as potential fungicides.
Collapse
Affiliation(s)
- Lingling Fan
- State Key Laboratory of Functions and Applications of Medicinal Plants and College of Pharmacy, Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, Guizhou Provincial Key Laboratory of Pathogenesis and Drug Research on Common Chronic Diseases, Guizhou Medical University, Guiyang, 550004, People's Republic of China
| | - Zhongfu Luo
- State Key Laboratory of Functions and Applications of Medicinal Plants and College of Pharmacy, Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, Guizhou Provincial Key Laboratory of Pathogenesis and Drug Research on Common Chronic Diseases, Guizhou Medical University, Guiyang, 550004, People's Republic of China
| | - Changfei Yang
- State Key Laboratory of Functions and Applications of Medicinal Plants and College of Pharmacy, Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, Guizhou Provincial Key Laboratory of Pathogenesis and Drug Research on Common Chronic Diseases, Guizhou Medical University, Guiyang, 550004, People's Republic of China
| | - Bing Guo
- State Key Laboratory of Functions and Applications of Medicinal Plants and College of Pharmacy, Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, Guizhou Provincial Key Laboratory of Pathogenesis and Drug Research on Common Chronic Diseases, Guizhou Medical University, Guiyang, 550004, People's Republic of China
| | - Jing Miao
- State Key Laboratory of Functions and Applications of Medicinal Plants and College of Pharmacy, Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, Guizhou Provincial Key Laboratory of Pathogenesis and Drug Research on Common Chronic Diseases, Guizhou Medical University, Guiyang, 550004, People's Republic of China
| | - Yang Chen
- Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang, 550025, People's Republic of China
| | - Lei Tang
- State Key Laboratory of Functions and Applications of Medicinal Plants and College of Pharmacy, Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, Guizhou Provincial Key Laboratory of Pathogenesis and Drug Research on Common Chronic Diseases, Guizhou Medical University, Guiyang, 550004, People's Republic of China.
| | - Yong Li
- State Key Laboratory of Functions and Applications of Medicinal Plants and College of Pharmacy, Guizhou Provincial Engineering Technology Research Center for Chemical Drug R&D, Guizhou Provincial Key Laboratory of Pathogenesis and Drug Research on Common Chronic Diseases, Guizhou Medical University, Guiyang, 550004, People's Republic of China.
| |
Collapse
|
14
|
Dhawale KD, Ingale AP, Shinde SV, Thorat NM, Patil LR. ZnO-NPs catalyzed condensation of 2-aminothiophenol and aryl/alkyl nitriles: Efficient green synthesis of 2-substituted benzothiazoles. SYNTHETIC COMMUN 2021. [DOI: 10.1080/00397911.2021.1894577] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Kiran D. Dhawale
- Department of Chemistry, Rao Bahadur Narayan Borawake College, Ahmednagar, India
| | - Ajit P. Ingale
- Department of Chemistry, Dada Patil College, Ahmednagar, India
| | | | - Nitin M. Thorat
- Department of Chemistry, Maharaja Jivajirao Shinde College, Ahmednagar, India
| | - Limbraj R. Patil
- Department of Chemistry, Maharaja Jivajirao Shinde College, Ahmednagar, India
| |
Collapse
|
15
|
Unsalan O, Arı H, Altunayar-Unsalan C, Bolelli K, Boyukata M, Yalcin I. FTIR, Raman and DFT studies on 2-[4-(4-ethylbenzamido)phenyl]benzothiazole and 2-[4-(4-nitrobenzamido)phenyl]benzothiazole supported by differential scanning calorimetry. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2020.128454] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
16
|
Mignani S, Majoral JP, Desaphy JF, Lentini G. From Riluzole to Dexpramipexole via Substituted-Benzothiazole Derivatives for Amyotrophic Lateral Sclerosis Disease Treatment: Case Studies. Molecules 2020; 25:E3320. [PMID: 32707914 PMCID: PMC7435757 DOI: 10.3390/molecules25153320] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2020] [Revised: 07/21/2020] [Accepted: 07/21/2020] [Indexed: 12/11/2022] Open
Abstract
The 1,3-benzothiazole (BTZ) ring may offer a valid option for scaffold-hopping from indole derivatives. Several BTZs have clinically relevant roles, mainly as CNS medicines and diagnostic agents, with riluzole being one of the most famous examples. Riluzole is currently the only approved drug to treat amyotrophic lateral sclerosis (ALS) but its efficacy is marginal. Several clinical studies have demonstrated only limited improvements in survival, without benefits to motor function in patients with ALS. Despite significant clinical trial efforts to understand the genetic, epigenetic, and molecular pathways linked to ALS pathophysiology, therapeutic translation has remained disappointingly slow, probably due to the complexity and the heterogeneity of this disease. Many other drugs to tackle ALS have been tested for 20 years without any success. Dexpramipexole is a BTZ structural analog of riluzole and was a great hope for the treatment of ALS. In this review, as an interesting case study in the development of a new medicine to treat ALS, we present the strategy of the development of dexpramipexole, which was one of the most promising drugs against ALS.
Collapse
Affiliation(s)
- Serge Mignani
- Laboratoire de Chimie et de Biochimie Pharmacologiques et Toxicologique, Université Paris Descartes, PRES Sorbonne Paris Cité, CNRS UMR 860, 45, rue des Saints Peres, 75006 Paris, France
- CQM-Centro de Química da Madeira, MMRG, Universidade da Madeira, Campus da Penteada, 9020-105 Funchal, Portugal
| | - Jean-Pierre Majoral
- Laboratoire de Chimie de Coordination du CNRS, 205 route de Narbonne, 31077 Toulouse CEDEX 4, France;
- Université Toulouse, 118 route de Narbonne, 31077 Toulouse CEDEX 4, France
| | - Jean-François Desaphy
- Dipartimento di Scienze Biomediche e Oncologia Umana, Scuola di Medicina, Università degli Studi di Bari Aldo Moro, Piazza Giulio Cesare, 70124 Bari, Italy;
| | - Giovanni Lentini
- Dipartimento di Farmacia—Scienze del Farmaco, Università degli Studi di Bari Aldo Moro, via Orabona 4, 70125 Bari, Italy
| |
Collapse
|
17
|
Kotovshchikov YN, Latyshev GV, Kirillova EA, Moskalenko UD, Lukashev NV, Beletskaya IP. Assembly of Thiosubstituted Benzoxazoles via Copper-Catalyzed Coupling of Thiols with 5-Iodotriazoles Serving as Diazo Surrogates. J Org Chem 2020; 85:9015-9028. [PMID: 32508100 DOI: 10.1021/acs.joc.0c00931] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
An efficient cascade approach to thiosubstituted benzoxazoles has been developed. The transformation starts with in situ generation of a diazo compound via annulation-triggered electrocyclic opening of the 1,2,3-triazole ring. The subsequent Cu-catalyzed trapping of diazo intermediates by various thiols affords the desired heterocycles in generally good yields of up to 91%. The protocol features very good functional group tolerance and is applicable to substrates with different electronic properties.
Collapse
Affiliation(s)
- Yury N Kotovshchikov
- Department of Chemistry, M. V. Lomonosov Moscow State University, Leninskiye Gory 1, Moscow 119991, Russia
| | - Gennadij V Latyshev
- Department of Chemistry, M. V. Lomonosov Moscow State University, Leninskiye Gory 1, Moscow 119991, Russia
| | - Elena A Kirillova
- Department of Chemistry, M. V. Lomonosov Moscow State University, Leninskiye Gory 1, Moscow 119991, Russia
| | - Uliana D Moskalenko
- Department of Chemistry, M. V. Lomonosov Moscow State University, Leninskiye Gory 1, Moscow 119991, Russia.,Department of Chemistry, Korea Advanced Institute of Science and Technology, Daejeon 34141, Republic of Korea
| | - Nikolay V Lukashev
- Department of Chemistry, M. V. Lomonosov Moscow State University, Leninskiye Gory 1, Moscow 119991, Russia
| | - Irina P Beletskaya
- Department of Chemistry, M. V. Lomonosov Moscow State University, Leninskiye Gory 1, Moscow 119991, Russia
| |
Collapse
|
18
|
Kottayil H, Machingal S, Parackal B. SM, Alungal M. S, Theresa LV, Govindan A, Krishnapillai S. Development of homogeneous polyamine organocatalyst for the synthesis of 2‐aryl‐substituted benzimidazole and benzoxazole derivatives. J Heterocycl Chem 2020. [DOI: 10.1002/jhet.4046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Hiba Kottayil
- Department of Applied ChemistryCochin University of Science and Technology Cochin Kerala India
| | - Shaibuna Machingal
- Department of Applied ChemistryCochin University of Science and Technology Cochin Kerala India
| | - Sherly mole Parackal B.
- Department of Applied ChemistryCochin University of Science and Technology Cochin Kerala India
| | - Shebitha Alungal M.
- Department of Applied ChemistryCochin University of Science and Technology Cochin Kerala India
| | - Letcy V. Theresa
- Department of Applied ChemistryCochin University of Science and Technology Cochin Kerala India
| | - Avudaiappan Govindan
- Department of Applied ChemistryCochin University of Science and Technology Cochin Kerala India
| | - Sreekumar Krishnapillai
- Department of Applied ChemistryCochin University of Science and Technology Cochin Kerala India
| |
Collapse
|
19
|
Perupogu N, Kumar DR, Ramachandran D. Anticancer activity of newly synthesized 1,2,4-Oxadiazole linked 4-(Oxazolo[5,4-d]pyrimidine derivatives. ACTA ACUST UNITED AC 2020. [DOI: 10.1016/j.cdc.2020.100363] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
|
20
|
Saini M, Mehta DK, Das R. Biological Evaluation and Molecular Docking Studies of Synthesized 5-Substituted-2-chlorophenyl-4-chloro Derivatives Bearing Pyridazinone Moiety. LETT ORG CHEM 2020. [DOI: 10.2174/1570178616666190705152605] [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
Chemical modification of pyridazinone may lead to a potent therapeutic agent. In this study,
biological properties of pyridazinone derivatives were evaluated by assessing their antimicrobial and
in-vitro antioxidant activities. The reaction of a mucochloric acid and 3-chloro-phenylhydrazine hydrochloride
led to the formation of 5-aryl-4-chloro-2-(3-chloro-phenyl)-2H-pyridazin-3-one derivatives
2(a-j). The target compounds were synthesized using nucleophilic substitution reaction. In-silico molecular
docking studies of the synthesized compounds were carried out with the help of V-Life Science
MDS 4.6 software using GRIP batch docking method to find out which derivative had a better docking.
The newly synthesized compounds were characterized by FTIR, 1HNMR, 13C-NMR, MS, and elemental
analysis. Antimicrobial and in-vitro antioxidant activity study of the novel synthesized compounds
were screened. Compounds 2f and 2g showed good antimicrobial having an MIC 12.5 μg/mL
against Staphylococcus aureus and Candida albicans and in-vitro antioxidant activities having an IC50
50.84. The experimental results were further supported by molecular docking analysis with better interaction
patterns.
Collapse
Affiliation(s)
- Minaxi Saini
- M.M. College of Pharmacy, Maharishi Markandeshwar (Deemed to be University), Mullana, Ambala, Haryana- 133207, India
| | - Dinesh Kumar Mehta
- M.M. College of Pharmacy, Maharishi Markandeshwar (Deemed to be University), Mullana, Ambala, Haryana- 133207, India
| | - Rina Das
- M.M. College of Pharmacy, Maharishi Markandeshwar (Deemed to be University), Mullana, Ambala, Haryana- 133207, India
| |
Collapse
|
21
|
Palamarchuk IV, Ogurtsova DN, Seilkhanov TM, Kulakov IV. Synthesis of N-Derivatives of Cytisine, Anabasine, and Salsoline Alkaloids with Pharmacophore 3-Aminopyridine-2(1H)-one and 5-Methyl-7-phenyloxazole[5,4-b]pyridine Cycles. RUSS J GEN CHEM+ 2019. [DOI: 10.1134/s1070363219120259] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
22
|
Du Y, Wan Z, Chen L, Wu L. One pot solvent-free solid state synthesis, photophysical properties and crystal structure of substituted azole derivatives. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2018.12.095] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
23
|
Palamarchuk IV, Matsukevich MV, Kulakov IV, Seilkhanov TМ, Fisyuk AS. Synthesis of N-substituted 2-aminomethyl-5-methyl-7-phenyloxazolo[5,4-b]pyridines. Chem Heterocycl Compd (N Y) 2019. [DOI: 10.1007/s10593-019-02537-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
24
|
Mishra N, Singh AS, Agrahari AK, Singh SK, Singh M, Tiwari VK. Synthesis of Benz-Fused Azoles via C-Heteroatom Coupling Reactions Catalyzed by Cu(I) in the Presence of Glycosyltriazole Ligands. ACS COMBINATORIAL SCIENCE 2019; 21:389-399. [PMID: 30943366 DOI: 10.1021/acscombsci.9b00004] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Glycosyl triazoles are conveniently accessible and contain multiple metal-binding units that may assist in metal-mediated catalysis. Azide derivatives of d-glucose have been converted to their respective aryltriazoles and screened as ligands for the synthesis of 2-substituted benz-fused azoles and benzimidazoquinazolinones by Cu-catalyzed intramolecular Ullmann type C-heteroatom coupling. Good to excellent yields for a variety of benz-fused heterocyles were obtained for this readily accessible catalytic system.
Collapse
Affiliation(s)
- Nidhi Mishra
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi-221005, India
| | - Anoop S. Singh
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi-221005, India
| | - Anand K. Agrahari
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi-221005, India
| | - Sumit K. Singh
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi-221005, India
| | - Mala Singh
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi-221005, India
| | - Vinod K. Tiwari
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi-221005, India
| |
Collapse
|
25
|
Gautam RK, Chatterjee A, Seth D. Photophysics, rotational dynamics and fluorescence lifetime imaging study of coumarin dyes in deep eutectic solvent. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.01.129] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
26
|
Li F, Li Z, Tang X, Cao X, Wang C, Li J, Wang L. Hemoglobin: A New Biocatalyst for the Synthesis of 2-substituted Benzoxazoles via
Oxidative Cyclization. ChemCatChem 2019. [DOI: 10.1002/cctc.201801760] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Fengxi Li
- Key Laboratory of Molecular Enzymology and Engineering of Ministry of Education, School of Life Sciences; Jilin University; Changchun 130023 P. R. China
| | - Zhengqiang Li
- Key Laboratory of Molecular Enzymology and Engineering of Ministry of Education, School of Life Sciences; Jilin University; Changchun 130023 P. R. China
| | - Xuyong Tang
- Key Laboratory of Molecular Enzymology and Engineering of Ministry of Education, School of Life Sciences; Jilin University; Changchun 130023 P. R. China
| | - Xinyu Cao
- Key Laboratory of Molecular Enzymology and Engineering of Ministry of Education, School of Life Sciences; Jilin University; Changchun 130023 P. R. China
| | - Chunyu Wang
- State Key Laboratory of Supramolecular Structure and Materials; Jilin University; Changchun 130023 P. R. China
| | - Jialin Li
- Key Laboratory of Molecular Enzymology and Engineering of Ministry of Education, School of Life Sciences; Jilin University; Changchun 130023 P. R. China
| | - Lei Wang
- Key Laboratory of Molecular Enzymology and Engineering of Ministry of Education, School of Life Sciences; Jilin University; Changchun 130023 P. R. China
| |
Collapse
|
27
|
Ozkan T, Hekmatshoar Y, Ertan-Bolelli T, Hidayat AN, Beksac M, Aki-Yalcin E, Yalcin I, Sunguroglu A. Determination of the Apoptotic Effect and Molecular Docking of Benzamide Derivative XT5 in K562 Cells. Anticancer Agents Med Chem 2019; 18:1521-1530. [DOI: 10.2174/1871520618666171229222534] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2017] [Revised: 07/12/2017] [Accepted: 12/06/2017] [Indexed: 11/22/2022]
Abstract
Background:
The tyrosine kinase inhibitor, imatinib, used as a first line treatment in Chronic Myeloid
Leukemia (CML) patients, may lead to resistance and failure to therapy. Novel combinations of imatinib
with other drugs is a strategy to improve treatment efficiency.
Objective:
In this study, the antileukemic and apoptotic effects of a benzamide derivative XT5 and benzoxazole
derivative XT2B and their combination with imatinib were investigated in imatinib-sensitive (K562S) and
imatinib-resistant (K562R) CML cells.
Methods:
In vitro cytotoxicity was determined by MTT assay. Then, apoptotic effect of XT5 on CML cell lines
was tested by Annexin V flow cytometry, caspase activation and RT-PCR. Docking calculation was performed
using AutoDock Vina in PyMOL environment using AutoDock/Vina plugin for PyMOL.
Results:
According to our MTT assay data, XT5 indicated significant antiproliferative effect on cell lines, therefore
we investigated apoptotic effects of XT5. Treatment of K562 cell lines with a combination of XT5 and
imatinib-XT5 increased cytotoxicity, the Annexin V binding and caspase 3/7 activation. In addition to apoptosis
assays, we observed an increase in the expression levels of the pro-apoptotic (BAX, BAD and BIM) genes in
XT5 treated K562R and K562S cells. Molecular modelling experiments showed that XT5 showed hydrogenbonding
interactions with important amino acids of BCR-ABL kinase receptor; however XT2B did not show
any hydrogen bond interaction.
Conclusion:
Our results indicate that XT5 could be a potential candidate to be used as a new anticancer drug
and XT5 combination with imatinib as an alternate treatment strategy for overcoming imatinib resistance.
Collapse
Affiliation(s)
- Tulin Ozkan
- Department of Medical Biology, School of Medicine, Ankara University, Ankara, Turkey
| | - Yalda Hekmatshoar
- Department of Medical Biology, School of Medicine, Ankara University, Ankara, Turkey
| | - Tugba Ertan-Bolelli
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Ankara University, Ankara, Turkey
| | | | - Meral Beksac
- Department of Hematology and Cord Blood Bank, Ankara University, Ankara, Turkey
| | - Esin Aki-Yalcin
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Ankara University, Ankara, Turkey
| | - Ismail Yalcin
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Ankara University, Ankara, Turkey
| | - Asuman Sunguroglu
- Department of Medical Biology, School of Medicine, Ankara University, Ankara, Turkey
| |
Collapse
|
28
|
Talebizadeh M, Anary‐Abbasinejad M, Darehkordi A. A Simple One‐pot Three‐component Synthesis of Dihydrobenzo[4,5]imidazo[2,1‐
b
]thiazol‐3‐ols by Reaction of Acyl Chlorides, Isocyanides, and 2‐Mercaptobenzimidazoles. J Heterocycl Chem 2018. [DOI: 10.1002/jhet.3335] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Mahdiyeh Talebizadeh
- Department of Chemistry, Faculty of ScienceVali‐e‐Asr University of Rafsanjan Rafsanjan 77176 Iran
| | | | - Ali Darehkordi
- Department of Chemistry, Faculty of ScienceVali‐e‐Asr University of Rafsanjan Rafsanjan 77176 Iran
| |
Collapse
|
29
|
Singh AS, Mishra N, Yadav MS, Tiwari VK. Free Radical Synthetic Protocol for Benzothiazoles
via
Ring Opening of Benzotriazole: A Two‐step Organic Chemistry Experiment for Undergraduate and Postgraduate Students. J Heterocycl Chem 2018. [DOI: 10.1002/jhet.3405] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Anoop S. Singh
- Department of Chemistry, Institute of ScienceBanaras Hindu University Varanasi 221005 India
| | - Nidhi Mishra
- Department of Chemistry, Institute of ScienceBanaras Hindu University Varanasi 221005 India
| | - Mangal S. Yadav
- Department of Chemistry, Institute of ScienceBanaras Hindu University Varanasi 221005 India
| | - Vinod K. Tiwari
- Department of Chemistry, Institute of ScienceBanaras Hindu University Varanasi 221005 India
| |
Collapse
|
30
|
Ravikumar P, Raolji GSB, Venkata Sastry K, Kalidasu S, Balaaraju T. Design, Synthesis, and Anticancer Evaluation of Tetrazole-Fused Benzoxazole Derivatives as Tubulin Binding Agents. RUSS J GEN CHEM+ 2018. [DOI: 10.1134/s1070363218100250] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
31
|
NH3(CH2)5NH3BiCl5: an efficient and recyclable catalyst for the synthesis of benzoxazole, benzimidazole and benzothiazole heterocycles. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2018. [DOI: 10.1007/s13738-018-1465-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
32
|
Venugopala KN, Khedr MA, Pillay M, Nayak SK, Chandrashekharappa S, Aldhubiab BE, Harsha S, Attimard M, Odhav B. Benzothiazole analogs as potential anti-TB agents: computational input and molecular dynamics. J Biomol Struct Dyn 2018; 37:1830-1842. [PMID: 29697293 DOI: 10.1080/07391102.2018.1470035] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Biotin is very important for the survival of Mycobacterium tuberculosis. 7,8-Diamino pelargonic acid aminotransaminase (DAPA) is a transaminase enzyme involved in the biosynthesis of biotin. The benzothiazole title compounds were investigated for their in vitro anti-tubercular activity against two tubercular strains: H37Rv (ATCC 25,177) and MDR-MTB (multidrug-resistant M. tuberculosis, resistant to isoniazid, rifampicin, and ethambutol) by an agar incorporation method. The possible binding mode and predicted affinity were computed using a molecular docking study. Among the synthesized compounds in the series, the title compound {2-(benzo[d]thiazol-2-yl-methoxy)-5-fluorophenyl}-(4-chlorophenyl)-methanone was found to exhibit significant activity with minimum inhibitory concentrations of 1 μg/mL and 2 μg/mL against H37Rv and MDR-MTB, respectively; this compound showed the highest binding affinity (-24.75 kcal/mol) as well.
Collapse
Affiliation(s)
- Katharigatta N Venugopala
- a Department of Pharmaceutical Sciences, College of Clinical Pharmacy , King Faisal University , Al-Ahsa , 31982 , Kingdom of Saudi Arabia.,b Department of Biotechnology and Food Technology , Durban University of Technology , Durban , 4001 , South Africa
| | - Mohammed A Khedr
- a Department of Pharmaceutical Sciences, College of Clinical Pharmacy , King Faisal University , Al-Ahsa , 31982 , Kingdom of Saudi Arabia.,c Faculty of Pharmacy, Department of Pharmaceutical Chemistry , Helwan University , Ein Helwan, Cairo , 11795 , Egypt
| | - Melendhran Pillay
- d Department of Microbiology , National Health Laboratory Services, KZN Academic Complex, Inkosi Albert Luthuli Central Hospital , Durban , 4001 , South Africa
| | - Susanta K Nayak
- e Department of Chemistry , Visvesvaraya National Institute of Technology , Nagpur , Maharashtra , 440010 , India
| | - Sandeep Chandrashekharappa
- f Institute for Stem Cell Biology and Regenerative Medicine , NCBS, TIFR, GKVK, Bellary Road, Bangalore , 560 065 , India
| | - Bandar E Aldhubiab
- a Department of Pharmaceutical Sciences, College of Clinical Pharmacy , King Faisal University , Al-Ahsa , 31982 , Kingdom of Saudi Arabia
| | - Sree Harsha
- a Department of Pharmaceutical Sciences, College of Clinical Pharmacy , King Faisal University , Al-Ahsa , 31982 , Kingdom of Saudi Arabia
| | - Mahesh Attimard
- a Department of Pharmaceutical Sciences, College of Clinical Pharmacy , King Faisal University , Al-Ahsa , 31982 , Kingdom of Saudi Arabia
| | - Bharti Odhav
- b Department of Biotechnology and Food Technology , Durban University of Technology , Durban , 4001 , South Africa
| |
Collapse
|
33
|
Lalinde E, Lara R, López IP, Moreno MT, Alfaro-Arnedo E, Pichel JG, Piñeiro-Hermida S. Benzothiazole-Based Cycloplatinated Chromophores: Synthetic, Optical, and Biological Studies. Chemistry 2018; 24:2440-2456. [PMID: 29219223 DOI: 10.1002/chem.201705267] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2017] [Indexed: 02/05/2023]
Abstract
Cycloplatinated complexes based on 2-(4-substituted)benzothiazole ligands of type [Pt(R-PBT-κC,N)Cl(L)] (PBT=2-phenylbenzothiazole; R=Br (1), Me2 N (2); L=dimethyl sulfoxide (DMSO; a), 1,3,5- triaza-7-phosphaadamantane (PTA; b), triphenylphosphine 3,3',3''-trisulfonate (TPPTS; c)) and [Pt(Br-PBT-κC)Cl(PTA)2 ] (3) are presented. On the basis of the photophysical data and time-dependent (TD)-DFT calculations (1 a and 2 a), the low-lying transitions (absorption and emission) were associated with ligand-center (LC) charge transfer, with minor metal-to-ligand charge transfer (MLCT), and intraligand charge transfer (ILCT) [Me2 N-PBT→PBT] excited states, respectively. Simultaneous fluorescence/phosphorescence bands were found in fluid solutions (and also in the solid state for 2 a), which become dominated by triplet emission bands in rigid media at 77 K. The effect of the concentration on emissive behavior of 2 a, b indicated the occurrence of aggregation-induced luminescence properties related to the occurrence of metal-metal and π⋅⋅⋅π interactions, which are more enhanced in 2 a because of the less bulky DMSO ligand. The behavior of 2 a toward para-toluenesulfonic acid (PTSA) in aerated acetonitrile and to hydrogen chloride gas in the solid state has been evaluated, thus showing a clear reversible change between the 1 ILCT and 3 LC/3 MLCT states due to protonation of the NMe2 group (theoretical calculations on 2 a-H+ ). Solid 2 a undergoes a surprising oxidation of the PtII center to PtIV with concomitant deoxygenation of DMSO, under prolonged reaction with hydrogen chloride gas to afford the PtIV /dimethyl sulfide complex (mer-[Pt(Me2 N-PBT-κC,N)Cl3 (SMe2 )]; mer-4), which evolves in solution to fac-4, as confirmed by X-ray studies. Cytotoxic activity studies on A549 and HeLa cell lines indicated cytotoxic activity of 1 b and 2 a, b. In addition, fluorescent cell microscopy revealed cytoplasmic staining, more visible in perinuclear areas. Inhibition of tubulin polymerization by 1 b in both cells is presented as a preliminary mechanism of its cytotoxic action.
Collapse
Affiliation(s)
- Elena Lalinde
- Departamento de Química-Centro de Síntesis Química de La Rioja (CISQ), Universidad de La Rioja, 26006, Logroño, Spain
| | - Rebeca Lara
- Departamento de Química-Centro de Síntesis Química de La Rioja (CISQ), Universidad de La Rioja, 26006, Logroño, Spain
| | - Icíar P López
- Lung Cancer and Respiratory Diseases Unit, Centro de Investigación Biomédica de La Rioja (CIBIR), Fundación Rioja Salud, 26006, Logroño, Spain
| | - M Teresa Moreno
- Departamento de Química-Centro de Síntesis Química de La Rioja (CISQ), Universidad de La Rioja, 26006, Logroño, Spain
| | - Elvira Alfaro-Arnedo
- Lung Cancer and Respiratory Diseases Unit, Centro de Investigación Biomédica de La Rioja (CIBIR), Fundación Rioja Salud, 26006, Logroño, Spain
| | - José G Pichel
- Lung Cancer and Respiratory Diseases Unit, Centro de Investigación Biomédica de La Rioja (CIBIR), Fundación Rioja Salud, 26006, Logroño, Spain
| | - Sergio Piñeiro-Hermida
- Lung Cancer and Respiratory Diseases Unit, Centro de Investigación Biomédica de La Rioja (CIBIR), Fundación Rioja Salud, 26006, Logroño, Spain
| |
Collapse
|
34
|
Ballari MS, Herrera Cano N, Lopez AG, Wunderlin DA, Feresín GE, Santiago AN. Green Synthesis of Potential Antifungal Agents: 2-Benzyl Substituted Thiobenzoazoles. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2017; 65:10325-10331. [PMID: 29099589 DOI: 10.1021/acs.jafc.7b04130] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
A series of benzyl-substituted thiobenzoazoles were synthesized by an environmentally friendly approach, to search for new antifungal agrochemicals. Compounds were prepared starting from 2-mercaptobenzoazoles, using KOH, benzyl halides, and water, resulting in a simple and ecological method. New antifungals were tested against a group of phytopathogenic fungi. Two compounds showed an interesting activity against Botrytis cinerea, Fusarium oxysporum, and Aspergillus spp.: 2-((4-(trifluoromethyl)benzyl)thio)benzo[d]thiazole, 3ac, and 2-((4-methylbenzyl)thio)benzo[d]thiazole, 3al. Thus, 3ac and 3al can be considered as broad spectrum antifungal agents. Furthermore, two new compounds, 2-((4-iodobenzyl)thio)benzo[d]thiazole, 3aj, and 2-(benzylthio)benzo[d]oxazole, 3ba, showed better inhibitory effect against Botrytis cinerea and Fusarium oxysporum when compared to the commercial fungicide Captan. Thus, 3aj and 3ba can be considered reduced-spectrum antifungals.
Collapse
Affiliation(s)
- María Sol Ballari
- INFIQC, Departamento de Química Orgánica, Facultad de Ciencias Químicas, CONICET, Universidad Nacional de Córdoba, Ciudad Universitaria , 5000 Córdoba, Argentina
| | - Natividad Herrera Cano
- Instituto de Biotecnología, Facultad de Ingeniería, Universidad Nacional de San Juan, CONICET , Av. Libertador General San Martín 1109 (O), 5400 San Juan, Argentina
| | - Abel Gerardo Lopez
- ICTA, Facultad de Ciencias Exactas, Físicas y Naturales, Universidad Nacional de Córdoba, Ciudad Universitaria , 5000 Córdoba, Argentina
| | - Daniel Alberto Wunderlin
- ICYTAC, CONICET and Departamento de Química Orgánica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Ciudad Universitaria , 5000 Córdoba, Argentina
| | - Gabriela Egly Feresín
- Instituto de Biotecnología, Facultad de Ingeniería, Universidad Nacional de San Juan, CONICET , Av. Libertador General San Martín 1109 (O), 5400 San Juan, Argentina
| | - Ana Noemí Santiago
- INFIQC, Departamento de Química Orgánica, Facultad de Ciencias Químicas, CONICET, Universidad Nacional de Córdoba, Ciudad Universitaria , 5000 Córdoba, Argentina
| |
Collapse
|
35
|
|
36
|
Jalaja K, Al-Alshaikh MA, Mary YS, Panicker CY, El-Emam AA, Temiz-Arpaci O, Alsenoy CV. Vibrational spectroscopic investigations and molecular docking studies of biologically active 2-[4-(4-phenylbutanamido)phenyl]-5-ethylsulphonyl-benzoxazole. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2017.07.023] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
37
|
Karimian A, Mohammadzadeh Kakhki R, Kargar Beidokhti H. Magnetic Co-doped NiFe2O4Nanocomposite: A Heterogeneous and Recyclable Catalyst for the One-Pot Synthesis of Benzimidazoles, Benzoxazoles and Benzothiazoles under Solvent-Free Conditions. J CHIN CHEM SOC-TAIP 2017. [DOI: 10.1002/jccs.201700060] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Azam Karimian
- Department of Chemistry, Faculty of Sciences; University of Gonabad; Gonabad Iran
| | | | | |
Collapse
|
38
|
Aswathy V, Alper-Hayta S, Yalcin G, Mary YS, Panicker CY, Jojo P, Kaynak-Onurdag F, Armaković S, Armaković SJ, Yildiz I, Van Alsenoy C. Modification of benzoxazole derivative by bromine-spectroscopic, antibacterial and reactivity study using experimental and theoretical procedures. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2017.04.010] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
|
39
|
AlNeyadi SS, Salem AA, Ghattas MA, Atatreh N, Abdou IM. Antibacterial activity and mechanism of action of the benzazole acrylonitrile-based compounds: In vitro , spectroscopic, and docking studies. Eur J Med Chem 2017; 136:270-282. [DOI: 10.1016/j.ejmech.2017.05.010] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2016] [Revised: 05/01/2017] [Accepted: 05/02/2017] [Indexed: 01/18/2023]
|
40
|
Chikhale RV, Pant AM, Menghani SS, Wadibhasme PG, Khedekar PB. Facile and efficient synthesis of benzoxazole derivatives using novel catalytic activity of PEG-SO 3 H. ARAB J CHEM 2017. [DOI: 10.1016/j.arabjc.2014.06.011] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
|
41
|
Xu W, Zeng MT, Liu M, Liu X, Chang CZ, Zhu H, Li YS, Dong ZB. Palladium-catalyzed Tandem Synthesis of 2-Aminobenzothiazoles Starting from Unreactive 2-Chloroanilines. CHEM LETT 2017. [DOI: 10.1246/cl.170023] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Wan Xu
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430074, P. R. China
| | - Meng-Tian Zeng
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430074, P. R. China
| | - Min Liu
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430074, P. R. China
| | - Xing Liu
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430074, P. R. China
| | - Cai-Zhu Chang
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430074, P. R. China
| | - Hui Zhu
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430074, P. R. China
| | - Yue-Sheng Li
- Non-power Nuclear Technology Collaborative Innovation Center, Hubei University of Science and Technology, Xianning 437100, P. R. China
| | - Zhi-Bing Dong
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430074, P. R. China
- Key Laboratory of Green Chemical Process, Ministry of Education, Wuhan Institute of Technology, Wuhan 430074, P. R. China
| |
Collapse
|
42
|
Shi H, Liu Y, Song J, Lu X, Geng Y, Zhang J, Xie J, Zeng Q. On-Surface Synthesis of Self-Assembled Monolayers of Benzothiazole Derivatives Studied by STM and XPS. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:4216-4223. [PMID: 28409926 DOI: 10.1021/acs.langmuir.7b00674] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
On-surface synthesis has gradually become a prevalent approach to constructing two-dimensional functional monolayers on various substrates. In the present work, the synthesis of self-assembled monolayers (SAMs) of benzothiazole derivatives was conducted at the liquid/solid interface for the first time. Two kinds of nanostructures were achieved on the highly oriented pyrolytic graphite (HOPG) surface via the condensation reaction between aromatic aldehyde derivatives and 2-aminothiophenol (ATP). The formation of thiazole-based self-assemblies was revealed by scanning tunneling microscopy (STM) and further confirmed by X-ray photoelectron spectroscopy (XPS). The successful synthesis of the benzothiazole derivatives not only extends the scope of on-surface reactions but also can be applied in designing multifunctional SAMs at the interface.
Collapse
Affiliation(s)
- Hongyu Shi
- State Key Laboratory of Tribology, Tsinghua University , Beijing 100084, China
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology (NCNST) , Beijing 100190, China
| | - Yuhong Liu
- State Key Laboratory of Tribology, Tsinghua University , Beijing 100084, China
| | - Jian Song
- State Key Laboratory of Tribology, Tsinghua University , Beijing 100084, China
| | - Xinchun Lu
- State Key Laboratory of Tribology, Tsinghua University , Beijing 100084, China
| | - Yanfang Geng
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology (NCNST) , Beijing 100190, China
| | - Junyong Zhang
- College of Biological, Chemical Science and Engineering, Jiaxing University , Jiaxing 314001, China
| | - Jingli Xie
- College of Biological, Chemical Science and Engineering, Jiaxing University , Jiaxing 314001, China
| | - Qingdao Zeng
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology (NCNST) , Beijing 100190, China
| |
Collapse
|
43
|
Krause M, Foks H, Gobis K. Pharmacological Potential and Synthetic Approaches of Imidazo[4,5-b]pyridine and Imidazo[4,5-c]pyridine Derivatives. Molecules 2017; 22:molecules22030399. [PMID: 28273868 PMCID: PMC6155225 DOI: 10.3390/molecules22030399] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2017] [Accepted: 03/02/2017] [Indexed: 12/23/2022] Open
Abstract
The structural resemblance between the fused imidazopyridine heterocyclic ring system and purines has prompted biological investigations to assess their potential therapeutic significance. They are known to play a crucial role in numerous disease conditions. The discovery of their first bioactivity as GABAA receptor positive allosteric modulators divulged their medicinal potential. Proton pump inhibitors, aromatase inhibitors, and NSAIDs were also found in this chemical group. Imidazopyridines have the ability to influence many cellular pathways necessary for the proper functioning of cancerous cells, pathogens, components of the immune system, enzymes involved in carbohydrate metabolism, etc. The collective results of biochemical and biophysical properties foregrounded their medicinal significance in central nervous system, digestive system, cancer, inflammation, etc. In recent years, new preparative methods for the synthesis of imidazopyridines using various catalysts have been described. The present manuscript to the best of our knowledge is the complete compilation on the synthesis and medicinal aspects of imidazo[4,5-b]pyridines and imidazo[4,5-c]pyridines reported from the year 2000 to date, including structure–activity relationships.
Collapse
Affiliation(s)
- Malwina Krause
- Department of Organic Chemistry, Medical University of Gdańsk, 107 Gen. Hallera Ave., 80-416 Gdańsk, Poland.
| | - Henryk Foks
- Department of Organic Chemistry, Medical University of Gdańsk, 107 Gen. Hallera Ave., 80-416 Gdańsk, Poland.
| | - Katarzyna Gobis
- Department of Organic Chemistry, Medical University of Gdańsk, 107 Gen. Hallera Ave., 80-416 Gdańsk, Poland.
| |
Collapse
|
44
|
Menon VV, Foto E, Mary YS, Karatas E, Panicker CY, Yalcin G, Armaković S, Armaković SJ, Van Alsenoy C, Yildiz I. Vibrational spectroscopic analysis, molecular dynamics simulations and molecular docking study of 5-nitro-2-phenoxymethyl benzimidazole. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2016.09.059] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
|
45
|
Zhang W, Liu J, Macho JM, Jiang X, Xie D, Jiang F, Liu W, Fu L. Design, synthesis and antimicrobial evaluation of novel benzoxazole derivatives. Eur J Med Chem 2017; 126:7-14. [DOI: 10.1016/j.ejmech.2016.10.010] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2016] [Revised: 10/03/2016] [Accepted: 10/05/2016] [Indexed: 11/26/2022]
|
46
|
Oksuzoglu E, Ertan-Bolelli T, Can H, Tarhan M, Ozturk K, Yildiz I. Antitumor activities on HL-60 human leukemia cell line, molecular docking, and quantum-chemical calculations of some sulfonamide-benzoxazoles. ARTIFICIAL CELLS NANOMEDICINE AND BIOTECHNOLOGY 2016; 45:1388-1396. [PMID: 27829297 DOI: 10.1080/21691401.2016.1241796] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
We previously synthesized some novel benzoxazole derivatives-containing sulfonamide. In this study, the compounds were investigated for their antitumor activities against the HL-60 human leukemia cells, using the MTT assay. Moreover, quantum chemical calculations using the DFT methods were applied for understanding the difference in antitumor activity. Additionally, molecular docking into active site of the DNA Topo II enzyme was performed on 3QX3. PDB file in order to find out possible mechanism of antitumor effect. According to all obtained results showed that compounds 1b, 1c, and 1d could be potential drug candidates as new antitumor agents, and are promising for cancer therapy.
Collapse
Affiliation(s)
- Emine Oksuzoglu
- a Molecular Biology Division, Department of Biology, Faculty of Science and Letters , Aksaray University , Aksaray , Turkey
| | - Tugba Ertan-Bolelli
- b Department of Pharmaceutical Chemistry, Faculty of Pharmacy , Ankara University , Tandogan , Ankara , Turkey
| | - Hatice Can
- c Department of Chemistry, Faculty of Basic Sciences , Gebze Technical University , Gebze-Kocaeli , Turkey
| | - Mehtap Tarhan
- a Molecular Biology Division, Department of Biology, Faculty of Science and Letters , Aksaray University , Aksaray , Turkey
| | - Kamile Ozturk
- a Molecular Biology Division, Department of Biology, Faculty of Science and Letters , Aksaray University , Aksaray , Turkey
| | - Ilkay Yildiz
- b Department of Pharmaceutical Chemistry, Faculty of Pharmacy , Ankara University , Tandogan , Ankara , Turkey
| |
Collapse
|
47
|
Zaater S, Bouchoucha A, Djebbar S, Brahimi M. Structure, vibrational analysis, electronic properties and chemical reactivity of two benzoxazole derivatives: Functional density theory study. J Mol Struct 2016. [DOI: 10.1016/j.molstruc.2016.06.047] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
48
|
Milani FJ, Nassiri M. Novel and one‐pot Synthesis of Tetrahydropyrrolo[1,2‐
a
]‐2‐Methylbenzothiazole‐3‐Spiro‐1
′
‐Cyclohexa‐2
′
,5
′
‐Dien‐4
′
‐one‐4,5‐Dicarboxylate Derivatives
via
a Three Component Reaction. J Heterocycl Chem 2016. [DOI: 10.1002/jhet.2774] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- F. J. Milani
- Department of Chemistry, Faculty of ScienceSistan and Blouchestan University Zahedan Iran
| | - M. Nassiri
- Department of Marine Chemistry, Faculty of Marine ScienceChabahar Maritime University P. O. Box 99717‐564 Chabahar Iran
| |
Collapse
|
49
|
Díaz JE, Mollo MC, Orelli LR. Microwave-assisted cyclizations promoted by polyphosphoric acid esters: a general method for 1-aryl-2-iminoazacycloalkanes. Beilstein J Org Chem 2016; 12:2026-2031. [PMID: 27829907 PMCID: PMC5082496 DOI: 10.3762/bjoc.12.190] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2016] [Accepted: 08/30/2016] [Indexed: 11/23/2022] Open
Abstract
The first general procedure for the synthesis of 5 to 7-membered 1-aryl-2-iminoazacycloalkanes is presented, by microwave-assisted ring closure of ω-arylaminonitriles promoted by polyphosphoric acid (PPA) esters. 1-Aryl-2-iminopyrrolidines were easily prepared from the acyclic precursors employing a chloroformic solution of ethyl polyphosphate (PPE). The use of trimethylsilyl polyphosphate (PPSE) in solvent-free conditions allowed for the synthesis of 1-aryl-2-iminopiperidines and hitherto unreported 1-aryl-2-iminoazepanes. The cyclization reaction involves good to high yields and short reaction times, and represents a novel application of PPA esters in heterocyclic synthesis.
Collapse
Affiliation(s)
- Jimena E Díaz
- Universidad de Buenos Aires. CONICET. Departamento de Química Orgánica. Facultad de Farmacia y Bioquímica. Junín 956, (1113) Buenos Aires, Argentina
| | - María C Mollo
- Universidad de Buenos Aires. CONICET. Departamento de Química Orgánica. Facultad de Farmacia y Bioquímica. Junín 956, (1113) Buenos Aires, Argentina
| | - Liliana R Orelli
- Universidad de Buenos Aires. CONICET. Departamento de Química Orgánica. Facultad de Farmacia y Bioquímica. Junín 956, (1113) Buenos Aires, Argentina
| |
Collapse
|
50
|
Study on interaction between the 2-(2-phenylethyl)-5-methylbenzimidazole and dsDNA using glassy carbon electrode modified with poly-3-amino-1,2,4-triazole-5-thiol. J Electroanal Chem (Lausanne) 2016. [DOI: 10.1016/j.jelechem.2016.06.028] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
|