目的 对报春花科珍珠菜属药用植物单条草Lysimachia candida的化学成分进行研究.方法 采用硅胶柱层析进行分离和纯化,通过波谱和化学方法进行结构鉴定.结果 从正丁醇萃取部分分离出1个三萜皂苷类化合物,结构鉴定为:3β,16a-二羟基齐墩果-12-烯-28-醛-3-O-β-D-吡喃葡萄糖基-23-O-a-D-呋喃核糖苷,命名为单条草苷甲(I).结论 单条草苷甲是新结构的三萜皂苷.

Object To investigate the chemical constituents from the whole plant of Lysimachia candida Ldl.. Methods The constituents were isolated and purified on silica gel column chromatography.Their structures were elucidated by chemical and spectroscopic evidence. Results A triterpenoid saponin,named candidoside A(Ⅰ),was isolated from the extract of n-BuOH. Its structure was shown to be 3β,16α-dihydroxy-olean-12-en-28-al-3-O-β-D-glucopyranosyl-23-O-α-D-ribofuranoside. Conclusion Candidoside A was a new triterpenoid saponin.