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熊果苷衍生物对α-葡萄糖苷酶的抑制作用。

α-Glucosidase Inhibition by Usnic Acid Derivatives.

机构信息

Faculty of Pharmacy, Ton Duc Thang University, Ho Chi Minh City, 700000, Vietnam.

Center of Excellence in Natural Products Chemistry, Department of Chemistry, Faculty of Science, Chulalongkorn University, Pathumwan, Bangkok, 10330, Thailand.

出版信息

Chem Biodivers. 2021 Apr;18(4):e2000906. doi: 10.1002/cbdv.202000906. Epub 2021 Feb 24.

Abstract

This study investigated a set of new potential antidiabetes agents. Derivatives of usnic acid were designed and synthesized. These analogs and nineteen benzylidene analogs from a previous study were evaluated for enzyme inhibition of α-glucosidase. Analogs synthesized using the Dakin oxidative method displayed stronger activity than the pristine usnic acid (IC >200 μM). Methyl (2E,3R)-7-acetyl-4,6-dihydroxy-2-(2-methoxy-2-oxoethylidene)-3,5-dimethyl-2,3-dihydro-1-benzofuran-3-carboxylate (6b) and 1,1'-(2,4,6-trihydroxy-5-methyl-1,3-phenylene)di(ethan-1-one) (6e) were more potent than an acarbose positive control (IC 93.6±0.49 μM), with IC values of 42.6±1.30 and 90.8±0.32 μM, respectively. Most of the compounds synthesized from the benzylidene series displayed promising activity. (9bR)-2,6-Bis[(2E)-3-(2-chlorophenyl)prop-2-enoyl]-3,7,9-trihydroxy-8,9b-dimethyldibenzo[b,d]furan-1(9bH)-one (1c), (9bR)-3,7,9-trihydroxy-8,9b-dimethyl-2,6-bis[(2E)-3-phenylprop-2-enoyl]dibenzo[b,d]furan-1(9bH)-one (1g), (9bR)-2-acetyl-6-[(2E)-3-(2-chlorophenyl)prop-2-enoyl]-3,7,9-trihydroxy-8,9b-dimethyldibenzo[b,d]furan-1(9bH)-one (2d), (9bR)-2-acetyl-6-[(2E)-3-(3-chlorophenyl)prop-2-enoyl]-3,7,9-trihydroxy-8,9b-dimethyldibenzo[b,d]furan-1(9bH)-one (2e), (6bR)-8-acetyl-3-(4-chlorophenyl)-6,9-dihydroxy-5,6b-dimethyl-2,3-dihydro-1H-[1]benzofuro[2,3-f][1]benzopyran-1,7(6bH)-dione (3e), (6bR)-8-acetyl-6,9-dihydroxy-5,6b-dimethyl-3-phenyl-2,3-dihydro-1H-[1]benzofuro[2,3-f][1]benzopyran-1,7(6bH)-dione (3h), (6bR)-3-(2-chlorophenyl)-8-[(2E)-3-(2-chlorophenyl)prop-2-enoyl]-6,9-dihydroxy-5,6b-dimethyl-2,3-dihydro-1H-[1]benzofuro[2,3-f][1]benzopyran-1,7(6bH)-dione (4b), and (9bR)-6-acetyl-3,7,9-trihydroxy-8,9b-dimethyl-2-[(2E)-3-phenylprop-2-enoyl]dibenzo[b,d]furan-1(9bH)-one (5c) were the most potent α-glucosidase enzyme inhibitors, with IC values of 7.0±0.24, 15.5±0.49, 7.5±0.92, 10.9±0.56, 1.5±0.62, 15.3±0.54, 19.0±1.00, and 12.3±0.53 μM, respectively.

摘要

这项研究调查了一组新的潜在抗糖尿病药物。设计并合成了乌苏酸的衍生物。评估了这些类似物和之前研究中的十九个苯亚甲基类似物对α-葡萄糖苷酶的抑制作用。使用 Dakin 氧化法合成的类似物显示出比原始乌苏酸更强的活性(IC >200 μM)。(2E,3R)-7-乙酰基-4,6-二羟基-2-(2-甲氧基-2-氧代乙基)-3,5-二甲基-2,3-二氢-1-苯并呋喃-3-羧酸甲酯(6b)和 1,1'-(2,4,6-三羟基-5-甲基-1,3-亚苯基)二(乙-1-酮)(6e)比阿卡波糖阳性对照物(IC 93.6±0.49 μM)更有效,其 IC 值分别为 42.6±1.30 和 90.8±0.32 μM。从苯亚甲基系列合成的大多数化合物显示出有希望的活性。(9bR)-2,6-双[(2E)-3-(2-氯苯基)丙烯酰基]-3,7,9-三羟基-8,9b-二甲氧基二苯并[b,d]呋喃-1(9bH)-酮(1c),(9bR)-3,7,9-三羟基-8,9b-二甲基-2,6-双[(2E)-3-苯基丙烯酰基]二苯并[b,d]呋喃-1(9bH)-酮(1g),(9bR)-2-乙酰基-6-[(2E)-3-(2-氯苯基)丙烯酰基]-3,7,9-三羟基-8,9b-二甲氧基二苯并[b,d]呋喃-1(9bH)-酮(2d),(9bR)-2-乙酰基-6-[(2E)-3-(3-氯苯基)丙烯酰基]-3,7,9-三羟基-8,9b-二甲氧基二苯并[b,d]呋喃-1(9bH)-酮(2e),(6bR)-8-乙酰基-3-(4-氯苯基)-6,9-二羟基-5,6b-二甲基-2,3-二氢-1H-[1]苯并呋喃[2,3-f][1]苯并吡喃-1,7(6bH)-二酮(3e),(6bR)-8-乙酰基-6,9-二羟基-5,6b-二甲基-3-苯基-2,3-二氢-1H-[1]苯并呋喃[2,3-f][1]苯并吡喃-1,7(6bH)-二酮(3h),(6bR)-3-(2-氯苯基)-8-[(2E)-3-(2-氯苯基)丙烯酰基]-6,9-二羟基-5,6b-二甲基-2,3-二氢-1H-[1]苯并呋喃[2,3-f][1]苯并吡喃-1,7(6bH)-二酮(4b)和(9bR)-6-乙酰基-3,7,9-三羟基-8,9b-二甲基-2-[(2E)-3-苯基丙烯酰基]二苯并[b,d]呋喃-1(9bH)-酮(5c)是最有效的α-葡萄糖苷酶抑制剂,IC 值分别为 7.0±0.24、15.5±0.49、7.5±0.92、10.9±0.56、1.5±0.62、15.3±0.54、19.0±1.00 和 12.3±0.53 μM。

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