SYNTHESIS OF 2,6-DIMETHYL-6-(8-METHYL-4-METHYLENE-7-NONENYL)-2-CYCLOHEXEN-1-YLMETHANOLS. A COMMENT ON THE STRUCTURE OF MAGYDAR-2,10(20),13-TRIEN-17-OL, THE DITERPENE OF<i>MAGYDARIS PANACIFOLIA</i>
作者:Hajime Nagano、Yukari Ishikawa、Yukiko Matsuo、Michio Shiota
DOI:10.1246/cl.1982.1947
日期:1982.12.5
α-Santonin was stereoselectively converted to a pair of diastereomers of 2,6-dimethyl-6-(8-methyl-4-methylene-7-nonenyl)-2-cyclohexen-1-ylmethanols (Ia and Ib). Both spectral data of Ia and Ib were found to be different from those reported for magydar-2,10(20),13-trien-17-ol isolated from Magydaris panacifolia (Vahl) Lange, This indicates that the structure of the natural diterpene must be revised.
α-Santonin 立体选择性地转化为一对 2,6-二甲基-6-(8-甲基-4-亚甲基-7-壬烯基)-2-环己烯-1-基甲醇的非对映异构体(Ia 和 Ib)。发现 Ia 和 Ib 的光谱数据与报道的从 Magydaris panacifolia (Vahl) Lange 分离的 Magydar-2,10(20),13-trien-17-ol 的光谱数据不同,这表明天然二萜的结构必须修改。