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从上新世华山松(PliocenePinusarmandii)化石木中分离鉴定了5个甾体成分:24ξ-n-丙基-胆甾烷-3-酮(1),豆甾烷-3-酮(2),24α-乙基-3α-胆甾醇(3),4-豆甾烯-3-酮(4)和3β-谷甾醇(5).化合物1为一个新的C30甾体.它们的结构由波谱方法鉴定.
Five steroids were isolated and identified from the fossil woods of Pliocene Pinus armandii: 24ξ-n-propyl-cholestan-3-one (1), stigmastan- (3), 4-stigmaster-3-one (4) and 3β-sitosterol (5) Compound 1 is a new C30 steroid whose structure is determined by spectral methods Identification.