【摘要】 从唇形科毛喉鞘蕊花（Ｃｏｌｅｕｓｆｏｒｓｋｏｈｌｉ）全草的氯仿提取物分离到２个新的微量成分，鞘蕊花戊素和已素。基于光谱分析，鞘蕊花戊素和已素的化学结构分别鉴定为１α，７β－二乙酰氧基－８，１３－环氧－６β羟基勒丹－１４烯－１１－酮（１）和７β－乙酰氧基－８，１３环氧－６β，９α－二羟基勒丹－１４烯－１１－酮（２）。更多还原

【Abstract】 Two new labdanoids, forskolin E and F, with forskolin A, B, C and D, have been isolated from the chloroform extract of the whole plants of Coleus forskohlii . The chemical structures of the two minor constituents have been established as 1α,7β-diacetoxy-8,13 epoxy-6β-hydroxylabd-14-en-11-one(1) and 7β-acetoxy-8,13-epoxy-6β,9α-dihydroxylabd-14-en-11-one(2), respectively, on the basis of detailed spectroscopic analysis and all assignments were supported by 1H- 1H COSY, HMBC and HMQC spectrum (see table 1).更多还原