北京石韦的化学成分研究

Study on the Chemical Constituents of Pyrrosia Davidii (Bak.) Ching

从北京石韦地上部分得到三个化合物，经波谱及理化鉴定为：β谷甾醇（Ｉ），胡萝卜苷（Ⅱ）和熊果酸（Ⅲ）。

Three compounds were isolated from the aerial parts of Pyrrosia davidii (Bak.) Ching.They were identified as β sitosterol(Ⅰ),daucosterol(Ⅱ) and ursolic acid(Ⅲ) by means of IR,NMR and MS. These compounds were found in Pyrrosia davidii (Bak.) for the first time.