The effective synthesis of benzoconduritols C and D is reported. Oxidation of oxabenzonorbornadiene followed by acetylation with Ac2O/pyridine or AcCl/CH2Cl2 gave the corresponding exo-diacetate compound stereoselectively. Acid-catalyzed ring opening of the bridged ether bond (the 1,4-anhydo bond) with Ac2O in the oxabenzonorbornadiene system to produce benzoconduritol tetraacetates followed by ammonolysis
报道了苯并康杜糖醇 C 和 D 的有效合成。氧化恶苯并降冰片二烯,然后用 Ac 2 O/吡啶或 AcCl/CH 2 Cl 2乙酰化,立体选择性地得到相应的外-二乙酸酯化合物。在氧代苯并降冰片二烯体系中,酸催化的桥接醚键(1,4-酐键)与 Ac 2 O 开环以产生苯并康杜糖醇四乙酸酯,然后氨解分别提供所需的苯并康杜糖醇 C 和 D。新型苯并康杜糖醇(9、10、15、16和17) 首次评估其潜在的抗氧化、抗炎和酶抑制活性。大多数配合物表现出中等活性。尤其是15(IC 50 = 0.374 mM)和10(IC 50 = 0.450 mM)与布洛芬(IC 50 = 0.437 mM) 相比具有更好的抗炎作用。此外,苯并康杜糖醇 C 9具有更好的 α-葡萄糖苷酶抑制潜力,IC 50值为 0.437 mM,比阿卡波糖 (IC 50 = 0.445 毫米)。这项研究的结果指出,由于它们的抗炎和抗葡萄
Stereo- and Regio-selective benzo- and Benzohalo-conduritols: Anti-diabetes & anti-tumor activity investigation, kinetic and molecular docking studies
作者:Gökay Aydın、Sümeyye Çol、Emel Karakılıç、Mustafa Emirik、Arif Baran
DOI:10.1016/j.tet.2023.133600
日期:2023.9
In this study, benzoconduritols, benzohalogenoconduritol, and benzodihalogenoconduritols with conduritol-A and –C structures from oxo-norbornene derivative endo-10 b, exo-11 b cleavaged by Lewis acids (BBr3, BCl3, BF3· OEt2) and Ac2O/H2SO4 were defined. These compounds (10a, 24, 25, 26, 27, 28, 29, 34, and 35) have been evaluated for their potential to inhibit the α-glucosidase enzyme against acarbose-positive