The isolation of three triterpenes from a benzene extract of Sarcostemma viminale by alumina chromatography is described. Two of the triterpenes were identified as β-amyrin and friedelin, but the third, which occurred in the plant as an acetate, could not be identified with any known triterpene acetate. The monohydroxy-triterpene obtained by hydrolysis of the acetate has been designated viminalol.