Pregnane Glycosides from Stems of Marsdenia tenacissima

作     者：YANG Mei,WANG Wen-lan,WU Hao,WANG Xiao-ling Ethnic Pharmaceutical Institute,Southwest University for Nationalities,Chengdu 610041,China 

作者机构：Ethnic Pharmaceutical InstituteSouthwest University for NationalitiesChengdu 610041China 

出 版 物：《Chinese Herbal Medicines》 (中草药（英文版）)

年 卷 期：2011年第3卷第1期

页      面：1-4页

学科分类：1008[医学-中药学(可授医学、理学学位)] 1006[医学-中西医结合] 100602[医学-中西医结合临床] 10[医学] 

基　　金：Foundation of Doctors of Southwest University for Nationalities(26701001) 

主　　题：Marsdenia tenacissima pregnane glycosides stems tenacigenoside I tenacigenoside K 

摘      要：Objective To study the chemical constituents from the stems of Marsdenia *** The chemical constituents were isolated by various column chromatography and their structures were identified by spectral and chemical *** Two pregnane glycosides were isolated from the stems of *** and identified as 3-O-β-D-glucopyranosyl-(1→4)-6-deoxy-3-O-methyl-β-D-allopyranosyl-(1→4)-β-D-oleandropyranosyl-11α-O- tigloyltenacigenin B,named as tenacigenoside I(1)and 3-O-β-D-glucopyranosyl-(1→4)-6-deoxy-3-O-methyl-β-D- allopyranosyl-(1→4)-β-D-oleandropyranosyl-11α,12β-di-O-acetyltenacigenin B,named as tenacigenoside K(2).Conclusion Compound 1 is a new compound,1H-NMR and 13C-NMR data of compound 2 are reported for the first time.