Noorwala M, Mohammad F V, Ahmad V U
H.E.J. Research Institute of Chemistry, University of Karachi, Pakistan.
J Nat Prod. 1995 Jul;58(7):1070-4. doi: 10.1021/np50121a013.
A new triterpenoid saponin, 3-O-[alpha-L-rhamnopyranosyl-(1-->4)-beta-D- galactopyranosyl-(1-->4)-beta-D-glucuronopyranosyl]-soyaspogeno l B [1] was isolated along with cycloartenol, stigmasterol, 3-O-acetyloleanolic acid, and sitosterol 3-beta-D-glucoside from a methanolic extract of the seeds of Vigna unguiculata subsp. unguiculata. The structure of 1 was elucidated by spectroscopic and chemical means.
从豇豆亚种豇豆种子的甲醇提取物中分离出一种新的三萜皂苷，3-O-[α-L-鼠李糖基-(1→4)-β-D-吡喃半乳糖基-(1→4)-β-D-吡喃葡萄糖醛酸基]-大豆皂醇B [1]，同时还分离出环阿屯醇、豆甾醇、3-O-乙酰齐墩果酸和β-谷甾醇3-β-D-葡萄糖苷。通过光谱和化学方法阐明了1的结构。
