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Yavari I, Sheikhi S, Taheri Z. Isocyanide-based synthesis of spirorhodanine-cyclopentadiene and spirorhodanine-iminobutenolide conjugates from Winterfeldt's zwitterions and 5-ylidene rhodanines. Mol Divers 2024; 28:143-157. [PMID: 37099072 DOI: 10.1007/s11030-023-10635-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Accepted: 03/16/2023] [Indexed: 04/27/2023]
Abstract
An ultrasonic-assisted isocyanide-based protocol to access a series of functionalized spirorhodanine-cyclopentadiene and spirorhodanine-iminobutenolide conjugates from alkyl isocyanides and dialkyl acetylenedicarboxylates in the presence of 5-ylidene rhodanines in MeCN, is described. The reaction proceeds via interception of the reactive Winterfeldt's zwitterions by 5-ylidene rhodanine derivatives. The structures of the target compounds were confirmed by X-ray diffraction studies.
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Affiliation(s)
- Issa Yavari
- Department of Chemistry, Tarbiat Modares University, P.O. Box 14115-175, Tehran, Iran.
| | - Sara Sheikhi
- Department of Chemistry, Tarbiat Modares University, P.O. Box 14115-175, Tehran, Iran
| | - Zohreh Taheri
- Department of Chemistry, Tarbiat Modares University, P.O. Box 14115-175, Tehran, Iran
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Akunuri R, M TU, Kaul G, Akhir A, Saxena D, Wajidali M, Veerareddy V, Yaddanapudi VM, Chopra S, Nanduri S. Synthesis and Antibacterial evaluation of Rhodanine and Its related heterocyclic compounds against S. aureus and A. baumannii. Chem Biodivers 2022; 19:e202200213. [PMID: 35714172 DOI: 10.1002/cbdv.202200213] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Accepted: 06/17/2022] [Indexed: 11/10/2022]
Abstract
Antimicrobial resistance is a serious challenge to modern medicine. Besides imposing high financial burden, multidrug resistant infections are directly responsible for high morbidity and mortality. Even though a number of antibiotics are currently available to treat infections caused by ESKAPE organisms, more and more bacterial strains are becoming resistant to these drugs. In these circumstances, there is an urgent unmet need for development of newer antimicrobials to treat the infections caused due to MDR organisms. Rhodanine and structurally related 5-membered heterocycles possess wide range of pharmacological activities. A number of these derivatives have shown good to potent inhibition against the various microorganisms. They are reported to alter the functions of DNA gyrase B, metallo-β-lactamases, pencilline binding protein (PBP), Mur ligases, RNA polymerase, Enoyl ACP reductases, 1-deoxy-d-xylulose-5-phosphate reductoisomerase. etc which are vital molecular targets involved in bacterial growth, survival and replication. In this study, we have generated a library of Rhodanine and related 5 membered heterocyclic derivatives and screened them against a panel of pathogens. Among all the compounds, 2a-i, 3a-b, 3g, 4, 6b-c, 6e, 6g, 12a-b and 14b-c have demonstrated good to moderate inhibition against S. aureus (MIC 0.125-8 µ g/mL). Further, compound 17b demonstrated moderate activity against A. baumannii (MIC 8 µ g/mL). In addition, compounds 2a, 2e, 4, 6c, 6g and 14b have shown good to mild inhibition against MDR S. aureus including VRSA (MIC 0.5-16 µ g/mL) with good selectivity index 20-1600. In addition, compound 2e has inhibited growth gradually after 6 h in time kill kinetic studies and not antagonized with the tested FDA approved drugs.
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Affiliation(s)
- Ravikumar Akunuri
- National Institute of Pharmaceutical Education and Research Hyderabad, Department Of Chemical Sciences, Balanagar, Hyderabad, INDIA
| | - Tanveer Unnissa M
- National Institute of Pharmaceutical Education and Research Hyderabad, Department of Chemical Sciences, Balanagar, Hyderabad, INDIA
| | - Grace Kaul
- CSIR-CDRI: Central Drug Research Institute, Division of Molecular Microbiology and Immunology, CDRI, Luknow, INDIA
| | - Abdul Akhir
- CSIR-CDRI: Central Drug Research Institute, Division of Molecular Microbiology and Immunology, CDRI, Luknow, INDIA
| | - Deepanshi Saxena
- CSIR-CDRI: Central Drug Research Institute, Division of Molecular Microbiology and Immunology, CDRI, Luknow, INDIA
| | - Mohmadd Wajidali
- National Institute of Pharmaceutical Education and Research Hyderabad, Department Of Chemical Sciences, Balanagar, Hyderabad, INDIA
| | - Vaishnavi Veerareddy
- National Institute of Pharmaceutical Education and Research Hyderabad, Department of Chemical Sciences, Balanagar, Hyderabad, INDIA
| | - Venkata Madhavi Yaddanapudi
- National Institute of Pharmaceutical Education and Research Hyderabad, Department of Chemical Sciences, Balanagar, Hyderabad, INDIA
| | - Sidharth Chopra
- CSIR-CDRI: Central Drug Research Institute, Division of Molecular Microbiology and Immunology, CDRI, Luknow, INDIA
| | - Srinivas Nanduri
- National Institute of Pharmaceutical Education and Research Hyderabad, Process Chemistry, Balanagar, 500037, Hyderabad, INDIA
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