作者:Hiroshi Nagata、Mitsuhiro Kawamura、Kunio Ogasawara
DOI:10.1055/s-2000-8235
日期:——
Diastereodivergent synthesis the C9-cyclopentanone chiral building block, serving as the non-tryptamine moiety of the Corynanthe type indole alkaloids and the related natural products, and its diastereomer has been developed from racemic norcamphor by employing lipase-mediated resolution via an allylic acetate intermediate having a bicyclo[3.2.1]octane framework. A potential of the latter diastereomer has been demonstrated by its conversion into (-)-semburin, a monoterpene isolated from Swertia japonica previously and obtained from the C9-block.
利用脂肪酶介导的解析法,通过具有双环[3.2.1]辛烷框架的烯丙基醋酸酯中间体,从外消旋去樟脑中开发出了 C9-环戊酮手性结构单元及其非对映异构体,该结构单元是 Corynanthe 型吲哚生物碱和相关天然产物的非色胺分子。后一种非对映异构体的潜力已通过将其转化为 (-)-semburin 得到证实,semburin 是一种单萜烯化合物,之前从 Swertia japonica 分离出来,并从 C9 嵌段中获得。