Three New Sesquiterpene Glycosides from Dendrobium nobile with Immunomodulatory Activity
摘要:
Dendroside A (1) and dendronobilosides A and B (2 and 3), three new sesquiterpene glycosides, have been isolated from the stems of Dendrobium nobile, a plant used in Chinese traditional medicine. Their structures and stereochemistry were determined as 10 beta ,12,14-trihdroxyalloaromadendrane 14-O-beta -D-glucopyranoside (1), 10,12-dihydroxypicrotoxane 10,12-di-O-beta -D-glucopyranoside (2), and 6a,10,12-trihydroxypicrotoxane 10-O-beta -D-glucopyranoside (3), respectively, on the basis of spectroscopic and chemical methods. Quantum chemistry calculations were used in support of the structural determination of 1. Compounds 1 and 2 were found to stimulate the proliferation of murine T and B lymphocytes in vitro, while compound 3 showed inhibitory activity in this same assay.
Microbial Transformation of (+)-10β,14-Dihydroxy-allo-aromadendrane and (−)-allo-Aromadendrone
作者:Dênis P. de Lima、Andrew J. Carnell、Stanley M. Roberts
DOI:10.1039/a901226e
日期:——
The biotransformation of (+)-10β,14-dihydroxy-allo-aromadendrane 1 and (â)-allo-aromadendrone 2 by Beauvaria densa CMC 3240, Beauvaria bassiana ATCC 7159, Curvularia lunata 2380 and Rhizopus sp. (from grapes) is investigated.
Three New Sesquiterpene Glycosides from <i>Dendrobium </i><i>n</i><i>obile </i>with Immunomodulatory Activity
作者:Weimin Zhao、Qinghua Ye、Xiaojian Tan、Hualiang Jiang、Xiaoyu Li、Kaixian Chen、A. Douglas Kinghorn
DOI:10.1021/np0102612
日期:2001.9.1
Dendroside A (1) and dendronobilosides A and B (2 and 3), three new sesquiterpene glycosides, have been isolated from the stems of Dendrobium nobile, a plant used in Chinese traditional medicine. Their structures and stereochemistry were determined as 10 beta ,12,14-trihdroxyalloaromadendrane 14-O-beta -D-glucopyranoside (1), 10,12-dihydroxypicrotoxane 10,12-di-O-beta -D-glucopyranoside (2), and 6a,10,12-trihydroxypicrotoxane 10-O-beta -D-glucopyranoside (3), respectively, on the basis of spectroscopic and chemical methods. Quantum chemistry calculations were used in support of the structural determination of 1. Compounds 1 and 2 were found to stimulate the proliferation of murine T and B lymphocytes in vitro, while compound 3 showed inhibitory activity in this same assay.