目的 研究冬凌草（碎米桠Rabdosia rubescens地上部分）的化学成分。方法 采用硅胶柱、十八烷基硅烷键合硅胶开放柱、小孔树脂凝胶柱以及反相高效液相色谱法进行分离纯化，通过理化性质及波谱数据对化合物进行结构鉴定。结果 从冬凌草中分离得到1个黄烷类化合物，鉴定为3'-羟基-2'，4'-二甲氧基-3-烯-黄烷（1）。结论 化合物1为新的黄烷类化合物，命名为冬凌烷A。

Objective To study the chemical constituents of Rabdosia rubescens. Methods The chemical constituent of R. rubescens was separated and purified by using of various column chromatographic technologies (silica gel, MCI, and ODS column chromatography) as well as HPLC. Structures were elucidated by physicochemical characteristics and spectral data. Results One new flavanoiel compound was isolated from supercritical fluid extract of R. rubescens, and it was elucidated as 3'-hydroxy-2',4'-dimethoxy-flav-3-ene (1). Conclusion Compound 1 is a new flavanoid, named as rubescenane A.

R284.1

国家自然科学基金资助项目（81503224）