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Umm-E-Farwa, Ullah S, Khan MA, Zafar H, Atia-Tul-Wahab, Younus M, Choudhary MI, Basha FZ. Dibenzazepine-linked isoxazoles: New and potent class of α-glucosidase inhibitors. Bioorg Med Chem Lett 2021; 40:127979. [PMID: 33766763 DOI: 10.1016/j.bmcl.2021.127979] [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: 11/23/2020] [Revised: 03/05/2021] [Accepted: 03/16/2021] [Indexed: 10/21/2022]
Abstract
α-Glucosidase inhibition is a valid approach for controlling hyperglycemia in diabetes. In the current study, new molecules as a hybrid of isoxazole and dibenzazepine scaffolds were designed, based on their literature as antidiabetic agents. For this, a series of dibenzazepine-linked isoxazoles (33-54) was prepared using Nitrile oxide-Alkyne cycloaddition (NOAC) reaction, and evaluated for their α-glucosidase inhibitory activities to explore new hits for treatment of diabetes. Most of the compounds showed potent inhibitory potency against α-glucosidase (EC 3.2.1.20) enzyme (IC50 = 35.62 ± 1.48 to 333.30 ± 1.67 µM) using acarbose as a reference drug (IC50 = 875.75 ± 2.08 µM). Structure-activity relationship, kinetics and molecular docking studies of active isoxazoles were also determined to study enzyme-inhibitor interactions. Compounds 33, 40, 41, 46, 48-50, and 54 showed binding interactions with critical amino acid residues of α-glucosidase enzyme, such as Lys156, Ser157, Asp242, and Gln353.
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Affiliation(s)
- Umm-E-Farwa
- Third World Center for Science and Technology (TWC), H. E. J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, 75270 Karachi, Pakistan
| | - Saeed Ullah
- H. E. J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, 75270 Karachi, Pakistan
| | - Maria Aqeel Khan
- Third World Center for Science and Technology (TWC), H. E. J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, 75270 Karachi, Pakistan.
| | - Humaira Zafar
- Dr. Panjwani Center for Molecular Medicine and Drug Research (PCMD), International Center for Chemical and Biological Sciences, University of Karachi, 75270 Karachi, Pakistan.
| | - Atia-Tul-Wahab
- Dr. Panjwani Center for Molecular Medicine and Drug Research (PCMD), International Center for Chemical and Biological Sciences, University of Karachi, 75270 Karachi, Pakistan
| | - Munisaa Younus
- Third World Center for Science and Technology (TWC), H. E. J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, 75270 Karachi, Pakistan
| | - M Iqbal Choudhary
- H. E. J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, 75270 Karachi, Pakistan; Dr. Panjwani Center for Molecular Medicine and Drug Research (PCMD), International Center for Chemical and Biological Sciences, University of Karachi, 75270 Karachi, Pakistan; Department of Biochemistry, Faculty of Science, King Abdulaziz University, Jeddah 21412, Saudi Arabia; Department of Chemistry, Faculty of Science and Technology, Universitas Airlangga, Komplek, Campus C, Surabaya 60115, Indonesia
| | - Fatima Z Basha
- H. E. J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, 75270 Karachi, Pakistan.
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Erdoğan M, Daştan A. Synthesis of N-substituted dibenzoazepine–pyridazine derivatives as potential neurologically active drugs. SYNTHETIC COMMUN 2020. [DOI: 10.1080/00397911.2020.1828925] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Musa Erdoğan
- Department of Food Engineering, Faculty of Engineering and Architecture, Kafkas University, Kars, Turkey
- Department of Chemistry, Faculty of Sciences, Atatürk University, Erzurum, Turkey
| | - Arif Daştan
- Department of Chemistry, Faculty of Sciences, Atatürk University, Erzurum, Turkey
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Khan MA, Batool F, Khatoon A, Sadiq R, Rahman S, Basha FZ. Solvent-free protocol for the green synthesis of benzamide analogs of dibenzoazepine. ACTA ACUST UNITED AC 2017. [DOI: 10.5155/eurjchem.8.2.179-182.1567] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Acosta LM, Jurado J, Palma A, Cobo J, Glidewell C. Five closely related 4-chloro-6,11-dihydro-5H-benzo[b]pyrimido[5,4-f]azepines: similar molecular structures but different supramolecular assemblies. ACTA CRYSTALLOGRAPHICA SECTION C-STRUCTURAL CHEMISTRY 2015; 71:1062-8. [DOI: 10.1107/s2053229615020811] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2015] [Accepted: 11/02/2015] [Indexed: 11/10/2022]
Abstract
Dibenz[b,f]azepine (DBA) is a privileged 6-7-6 tricyclic ring system of importance in both organic and medicinal chemistry. Benzo[b]pyrimido[5,4-f]azepines (BPAs), which also contain a privileged 6-7-6 ring system, are less well investigated, probably because of a lack of straightforward and versatile methods for their synthesis. A simple and versatile synthetic approach to BPAs based on intramolecular Friedel–Crafts alkylation has been developed. A group of closely-related benzo[b]pyrimido[5,4-f]azepine derivatives, namely (6RS)-4-chloro-6,11-dimethyl-6,11-dihydro-5H-benzo[b]pyrimido[5,4-f]azepine, C14H14ClN3, (I), (6RS)-4-chloro-8-hydroxy-6,11-dimethyl-6,11-dihydro-5H-benzo[b]pyrimido[5,4-f]azepine, C14H14ClN3O, (II), (6RS)-4-<!?tlsb=-0.14pt>chloro-8-methoxy-6,11-dimethyl-6,11-dihydro-5H-benzo[b]pyrimido[5,4-f]azepine, C15H16ClN3O, (III), and (6RS)-4-chloro-8-methoxy-6,11-dimethyl-2-phenyl-6,11-dihydro-5H-benzo[b]pyrimido[5,4-f]azepine, C21H20ClN3O, (IV), has been prepared and their structures compared with the recently published structure [Acosta-Quinteroet al.(2015).Eur. J. Org. Chem.pp. 5360–5369] of (6RS)-4-chloro-2,6,8,11-tetramethyl-6,11-dihydro-5H-benzo[b]pyrimido[5,4-f]azepine, (V). All five compounds crystallize as racemic mixtures and they have very similar molecular conformations, with the azepine ring adopting a boat-type conformation in each case, although the orientation of the methoxy substituent in each of (III) and (IV) is different. The supramolecular assemblies in (II) and (IV) depend upon hydrogen bonds of the O—H...N and C—H...π(arene) types, respectively, those in (I) and (V) depend upon π–π stacking interactions involving pairs of pyrimidine rings, and that in (III) depends upon a π–π stacking interaction involving pairs of phenyl rings. Short C—Cl...π(pyrimidine) contacts are present in (I), (II) and (IV) but not in (III) or (V).
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Abdoh MMM, Madan Kumar S, Vinay Kumar KS, Manjunath BC, Sadashiva MP, Lokanath NK. 5-(Prop-2-yn-1-yl)-5H-dibenzo[b,f]azepine: ortho-rhom-bic polymorph. Acta Crystallogr Sect E Struct Rep Online 2013; 69:o17. [PMID: 23476404 PMCID: PMC3588308 DOI: 10.1107/s1600536812048908] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2012] [Accepted: 11/28/2012] [Indexed: 11/10/2022]
Abstract
In the title ortho-rhom-bic polymorph (space group Iba2), C17H13N, the dihedral angle between the benzene rings is 55.99 (10)° and the azepine ring adopts a boat conformation. In the crystal, mol-ecules are linked by C-H⋯π contacts. The previously-reported polymorph [Yousuf et al. (2012 ▶). Acta Cryst. E68, o1101] crystallizes in the monoclinic system (space group P21/c) with two mol-ecules in the asymmetric unit.
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Affiliation(s)
- M M M Abdoh
- Department of Physics, Faculty of Science, An Najah National University, Nabtus West Bank, Palestine
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