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Balakrishna A, Aguiar A, Sobral PJM, Wani MY, Almeida e Silva J, Sobral AJFN. Paal–Knorr synthesis of pyrroles: from conventional to green synthesis. CATALYSIS REVIEWS-SCIENCE AND ENGINEERING 2018. [DOI: 10.1080/01614940.2018.1529932] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Avula Balakrishna
- Department of Chemistry, Faculty of Sciences and Engineering, University of Coimbra, Coimbra, Portugal
- Department of Chemistry, Rajeev Gandhi Memorial College of Engineering and Technology (Autonomous), Nandyal, Andhra Pradesh, India
| | - António Aguiar
- Department of Chemistry, Faculty of Sciences and Engineering, University of Coimbra, Coimbra, Portugal
| | | | - Mohmmad Younus Wani
- Department of Chemistry, Faculty of Sciences and Engineering, University of Coimbra, Coimbra, Portugal
- Chemistry Department, Faculty of Science, University of Jeddah, Jeddah, Kingdom of Saudi Arabia
| | - Joana Almeida e Silva
- Department of Chemistry, Faculty of Sciences and Engineering, University of Coimbra, Coimbra, Portugal
| | - Abilio J. F. N. Sobral
- Department of Chemistry, Faculty of Sciences and Engineering, University of Coimbra, Coimbra, Portugal
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Krasavin M, Sosnov AV, Karapetian R, Konstantinov I, Soldatkina O, Godovykh E, Zubkov F, Bai R, Hamel E, Gakh AA. Antiproliferative 4-(1,2,4-oxadiazol-5-yl)piperidine-1-carboxamides, a new tubulin inhibitor chemotype. Bioorg Med Chem Lett 2014; 24:4477-4481. [PMID: 25155551 DOI: 10.1016/j.bmcl.2014.07.089] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2014] [Revised: 07/29/2014] [Accepted: 07/31/2014] [Indexed: 12/14/2022]
Abstract
We discovered a new chemical class of antiproliferative agents, 4-(1,2,4-oxadiazol-5-yl)piperidine-1-carboxamides. SAR-guided optimization of the two distinct terminal fragments yielded a compound with 120 nM potency in an antiproliferative assay. Biological activity profile studies (COMPARE analysis) demonstrated that 4-(1,2,4-oxadiazol-5-yl)piperidine-1-carboxamides act as tubulin inhibitors, and this conclusion was confirmed via biochemical assays with pure tubulin and demonstration of increased numbers of mitotic cells following treatment of a leukemia cell line.
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Affiliation(s)
- Mikhail Krasavin
- Department of Chemistry, St. Petersburg State University, Peterhof 198504, Russia.
| | - Andrey V Sosnov
- ORCHIMED, Institute of Physiologically Active Compounds, Chernogolovka, Moscow Region 142432, Russia
| | - Ruben Karapetian
- Chemical Diversity Research Institute, Khimki, Moscow Region 114401, Russia
| | - Igor Konstantinov
- Chemical Diversity Research Institute, Khimki, Moscow Region 114401, Russia
| | - Olga Soldatkina
- Chemical Diversity Research Institute, Khimki, Moscow Region 114401, Russia
| | - Elena Godovykh
- Chemical Diversity Research Institute, Khimki, Moscow Region 114401, Russia
| | - Fedor Zubkov
- Peoples' Friendship University of Russia, Moscow 117198, Russia
| | - Ruoli Bai
- Screening Technologies Branch, Developmental Therapeutics Program, Division of Cancer Treatment and Diagnosis, Frederick National Laboratory for Cancer Research, National Cancer Institute, National Institutes of Health, Frederick, MD 21702, USA
| | - Ernest Hamel
- Screening Technologies Branch, Developmental Therapeutics Program, Division of Cancer Treatment and Diagnosis, Frederick National Laboratory for Cancer Research, National Cancer Institute, National Institutes of Health, Frederick, MD 21702, USA
| | - Andrei A Gakh
- Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA; The University of Virginia, Charlottesville, VA 22908, USA; The Discovery Chemistry Project, Bethesda, MD 20824, USA.
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Gakh AA, Sosnov AV, Krasavin M, Nguyen TL, Hamel E. Identification of diaryl 5-amino-1,2,4-oxadiazoles as tubulin inhibitors: the special case of 3-(2-fluorophenyl)-5-(4-methoxyphenyl)amino-1,2,4-oxadiazole. Bioorg Med Chem Lett 2013; 23:1262-8. [PMID: 23385208 PMCID: PMC3601769 DOI: 10.1016/j.bmcl.2013.01.007] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2012] [Revised: 12/29/2012] [Accepted: 01/02/2013] [Indexed: 12/14/2022]
Abstract
The combination of experimental (inhibition of colchicine binding) and computational (COMPARE, docking studies) data unequivocally identified diaryl 5-amino-1,2,4-oxadiazoles as potent tubulin inhibitors. Good correlation was observed between tubulin binding and cytostatic properties for all tested compounds with the notable exception of the lead candidate, 3-(3-methoxyphenyl)-5-(4-methoxyphenyl)amino-1,2,4-oxadiazole (DCP 10500078). This compound was found to be substantially more active in our in vitro experiments than the monofluorinated title compound, 3-(2-fluorophenyl)-5-(4-methoxyphenyl)amino-1,2,4-oxadiazole (DCP 10500067/NSC 757486), which in turn demonstrated slightly better tubulin binding activity. Comparative SAR analysis of 25 diaryl 5-amino-1,2,4-oxadiazoles with other known tubulin inhibitors, such as combretastatin A-4 (CA-4) and colchicine, provides further insight into the specifics of their binding as well as a plausible mechanism of action.
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Affiliation(s)
- Andrei A Gakh
- Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA.
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Synthesis of 3-fluoroimidazo[1,2-a]pyrimidines and 5-fluoroimidazo[2,1-b][1,3]thiazoles via heterocyclization of (N-heteroarylimino)trifluoropyruvates. J Fluor Chem 2010. [DOI: 10.1016/j.jfluchem.2010.06.019] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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