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Chemical Constituents from Craibiodendron yunnanense

✍ Scribed by Sheng-Xiang Yang; Jin-Ming Gao; Jian-Chun Qin; Lin Zhou; Ming-Hua Chiu; Lei Wang

Publisher
John Wiley and Sons
Year
2007
Tongue
German
Weight
63 KB
Volume
90
Category
Article
ISSN
0018-019X

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✦ Synopsis

Abstract

A new triterpene, (3__β__,12__β__)‐taraxast‐20(30)‐ene‐3,12‐diol (=(3__β__,12__β__,18__α__,19__α__)‐urs‐20(30)‐ene‐3,12‐diol; 1), together with the known compounds ursolic acid, α‐amyrin, β‐amyrin, (2__α__,3__β__)‐2,3‐dihydroxyursa‐5,12‐dien‐28‐oic acid, (2__α__,3__β__)‐2,3,23‐trihydroxyurs‐12‐en‐28‐oic acid, (2__S__,3__S__,4__R__,8__Z__)‐1‐O‐(β‐D‐glucopyranosyl)‐2‐{[(2__R__)‐2‐hydroxydocosanoyl]amino}octadec‐8‐ene‐1,3,4‐triol, and (2__S__,3__S__,4__R__,8__Z__)‐1‐O‐(β‐D‐glucopyranosyl)‐2‐[(palmitoyl)amino]octadec‐8‐ene‐1,3,4‐triol, and quercetin 3‐(β‐D‐glucopyranoside) were isolated from the leaves of Craibiodendron yunnanense. Their structures were established on the basis of spectral evidence. The last four compounds were identified for the first time in this plant.

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