Chemoenzymatic preparation of functionalized bicyclo[3.2.1]octenone and practical utilization
作者:Shinichiro Ito、Ayako Tosaka、Keisuke Hanada、Masatoshi Shibuya、Kunio Ogasawara、Yoshiharu Iwabuchi
DOI:10.1016/j.tetasy.2007.12.009
日期:2008.2
the synthesis of both enantiomers of a functionalized bicyclo[3.2.1]octenone, which is potentially useful as a versatile chiral building block, has been developed from 1,4-cyclohexanedione monoethylene acetal by employing proline-catalyzed diastereoselective intramolecular aldolization and lipase-mediated kinetic resolution as the key steps. The synthetic utility of the bicyclo[3.2.1]octenone has been
通过使用脯氨酸催化的非对映选择性分子内缩醛反应,从1,4-环己烷二酮单乙缩醛开发了一种实用的合成功能化双环[3.2.1]辛烯酮的对映异构体的方法,该化合物可能用作通用的手性构建基。和脂肪酶介导的动力学拆分是关键步骤。通过转化为手性双环[5.3.0]癸烷,已证明了双环[3.2.1]辛烯酮的合成效用,该手性应用作合成抗肿瘤倍半萜假拟番石榴酸内酯类的关键中间体。