通光藤中两个新C_(21)甾体苷类成分

Two new C_(21) steroidal glycosides from Marsdenia tenacissima

目的 研究中药通光藤的化学成分。方法 用现代色谱技术分离化合物 ,用化学方法及现代光谱技术(IR ,UV ,MS ,1HNMR ,13 CNMR和各种 2D NMR技术 )对所得化合物的结构进行鉴定。结果 从云南昆明产通光藤茎中分离得到 2个化合物 ,分别鉴定为通光藤苷J(tenacissosidesJ,I)和通光藤苷K(tenacissosidesK ,II)。

AimTo study the chemical constituents of Marsdenia tenacissima (Roxb.) Wight et Arn. MethodsTo separate compounds with various chromatography technology and to elucidate th eir structures by chemical and spectral analysis. ResultsTwo compounds were isolated from Marsdenia tenacissima and their stuctures w ere determined as tenacissosides J (I) and tenacissosides K (II). ConclusionCompounds I and II are new C 21 steroidal g lycosides.