Characteristic alkaline catalyzed degradation of kotalanol, a potent α-glucosidase inhibitor isolated from Ayurvedic traditional medicine Salacia reticulata, leading to anhydroheptitols: another structural proof
作者:Osamu Muraoka、Weijia Xie、Satomi Osaki、Ayumi Kagawa、Genzoh Tanabe、Mumen F.A. Amer、Toshie Minematsu、Toshio Morikawa、Masayuki Yoshikawa
DOI:10.1016/j.tet.2010.03.072
日期:2010.5
Stereochemical structure of kotalanol (2), a highly potent a-glucosidase inhibitor isolated from an Ayurvedic traditional medicine Salacia reticulata, was proved by alkaline catalyzed degradation of natural kotalanol (2), in which characteristic stereospecific cyclization of the degradative side chain leading to anhydroheptitols (10 and 11) was involved. (C) 2010 Elsevier Ltd. All rights reserved.