Minor triterpenes from an aqueous extract of the hook-bearing stem of .

J Asian Nat Prod Res

State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China.

Published: April 2021


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Article Abstract

Six new triterpenes, uncarinic acids KP (), along with 24 known analogues, were isolated as minor constituents of an aqueous decoction of the hook-bearing stems of (Gou-teng). By comprehensive spectroscopic data analysis, their structures were elucidated as derivatives of olean-12-en-28-oic acid and urs-12-en-28-oic acid with different oxidized forms at C-3, C-6, and/or C-23, respectively. Cell-based preliminary bioassay showed that the ()-/()-coumaroyloxy and ()-/()-feruloyloxy units at C-27 of olean-12-en-28-oic acid and urs-12-en-28-oic acid played roles in their bioactivities.[Formula: see text].

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http://dx.doi.org/10.1080/10286020.2020.1870961DOI Listing

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