Three pure compounds were isolated from the stem bark of Croton oblongifolius Roxb. Two of them were identified as the known Iabdane ent-8(17).12E,14-labdatrien-18-oic acid and a new Iabdane named 12,15-epoxy-8(17),12.14-labdatriene. The remainder was a kaurane, ent-kaur-16-en-19-oic acid. Furthermore, a mixture of steroids consisting of β-sitosterol, stigmasterol and campesterol, and a mixtrue of C19-26 long chain alcohols were obtained. The identificaion and structure elucidation of the isolated compound were established by analysis of the spectroscopic data, as well as comparison with the data of other related compounds.
