A new enantiospecific route toward monocarbocyclic terpenoids: Synthesis of (−)- caparrapi oxide
作者:Alejandro F. Barrero、Enrique J. Alvarez-Manzaneda、Rachid Chahboun、M. Coral Páiz
DOI:10.1016/s0040-4039(98)02119-4
日期:1998.12
A new and efficient strategy is described for carrying out the enantiospecific synthesis of monocarbocyclic terpenoids from (−)-sclareol (1). The key steps are the Grob scission of 11-p-toluenesulphonyloxydriman-7α-ol (2) to give the tobacco seco-sesquiterpene 3 and the Baeyer-Villiger oxidation of 4-[(1′S, 2′S)-2′-formyl-2′,6′,6′-trimethylcyclohexyl]-2-butanone (4), derived from 3. The first enantiospecific
描述了一种新的有效策略,用于从(-)-香紫苏醇(1)进行单碳环萜类化合物的对映体特异性合成。关键步骤是对11-对甲苯磺酰氧基driman-7α-ol(2)进行格罗布斯分裂,得到烟草倍半萜烯3和4-[(1'S,2'S)-2'的Baeyer-Villiger氧化。-甲酰基-2′,6′,6′-三甲基环己基] -2-丁酮(4),衍生自3。报告了基于这种方法的(-)-caparrapi氧化物(8)的第一个对映体合成。