Syntheses of a prenylbisabolane diterpene, a natural insecticide from Croton linearis, and of the bisabolane sesquiterpenes (−)-delobanone and (−)-epi-delobanone
作者:Olof Smitt、Hans-Erik Högberg
DOI:10.1016/s0040-4020(02)00821-9
日期:2002.9
Croton linearis, the (−)-7-hydroxy-3,10-prenylbisaboladien-2-one 1, is described as well as the syntheses of the 7-hydroxy-3,10-bisaboladien-2-ones (−)-epi-delobanone (14a) and (−)-delobanone (14b). The model compounds, 7-hydroxy-11-nor-methyl-3-bisabolen-2-one (8a), and 11,15-nor-dimethyl-7-hydroxy-3-bisabolen-2-one (8b), were successfully prepared by opening of the protected carvone epoxide derivative
描述了对巴豆(-)-7-羟基-3,10-异戊二烯基双aboladien-2-one 1的对映选择性的第一全合成,以及7-羟基-3,10-bisaboladien的合成-2-酮(-)- epi-地酮(14a)和(-)-地酮(14b)。模型化合物分别为7-羟基-11-去甲基-3--3-双abobolen-2-one(8a)和11,15-去二甲基-7-羟基-3-bisabolen-2-one(8b)。通过用适当的有机铜化合物打开被保护的香芹酮环氧衍生物6,可以成功制备。对化合物1和14使用了另一种方法。因此,它们是从高香烷基锂或高异戊二烯格氏试剂中获得的,它们与由(R)-香芹酮分四步制备的被掩蔽的正-香芹酮酮11成功反应。