The efficient consecutive β-carboxylation and α-alkylation of cyclic α,β-enones; a new route to sarkomycin
作者:Junzo Otera、Yoshihisa Niibo、Hiroshi Aikawa
DOI:10.1016/s0040-4039(00)96066-0
日期:1987.1
introduction of a carboxy group equivalent and an alkyl group at the respective β- and α-positions of cyclic enones has been achieved through a 1,4-addition reaction of [methoxy(phenylthio)(trimethylsilyl)methyl] lithium followed by direct trapping of the resulting enolate with alkyl halides. The present method proved to be applicable to a simple synthesis of sarkomycin.
通过[甲氧基(苯硫基)(三甲基甲硅烷基)甲基]锂的1,4-加成反应,随后在环烯酮的相应β-和α-位置上依次一键式引入羧基当量和烷基通过用卤代烷直接捕集所得的烯醇化物。经证明,本方法适用于沙克霉素的简单合成。