Three Labdane-Type Diterpenes from the Bark of Juniperus formosana HAY. var. concolor HAY.
作者:Yueh-Hsiung KUO、Ming-Tsang YU
DOI:10.1248/cpb.44.1242
日期:——
Three new labdane-type diterpenes, (13S)-15-hydroxylabd-8(17)-en-19-oic acid, (13S)-15-acetoxylabd-8(17)-en-19-oic acid, and (13S)-15-octadecanoyloxylabd-8(17)-en-19-oic acid, together with one known compound, enantio-oliveric acid, were found from the bark of Juniperus formosana HAY. var. concolor HAY. Their structures were elucidated on the basis of spectral data and chemical transformation.
从杜松(Juniperus formosana HAY.var.concolor HAY)树皮中发现了三种新的拉布丹型二萜,即(13S)-15-羟基拉布丹-8(17)-烯-19-酸、(13S)-15-乙酰氧基拉布丹-8(17)-烯-19-酸和(13S)-15-十八碳酰氧基拉布丹-8(17)-烯-19-酸,以及一种已知化合物对映体奥利韦酸。根据光谱数据和化学变化阐明了它们的结构。