Alkylation of Phenylglycinol-Derived Oxazolopiperidone Lactams. Enantioselective Synthesis of β-Substituted Piperidines
作者:Mercedes Amat、Carmen Escolano、Oscar Lozano、Arantxa Gómez-Esqué、Rosa Griera、Elies Molins、Joan Bosch
DOI:10.1021/jo060157v
日期:2006.5.1
outcome of the alkylation of a variety of phenylglycinol-derived oxazolopiperidone lactams is studied. The influence of the configuration of the C-8a stereocenter and the effect of the substituents at the C-8 and C-8a positions on the stereoselectivity of the reaction are discussed. The synthetic utility of these alkylation reactions is illustrated with the synthesis of cis and trans 3,5-disubstituted, 2
研究了各种苯基甘醇衍生的恶唑并哌啶酮内酰胺烷基化的立体化学结果。讨论了C-8a立体中心构型的影响以及C-8和C-8a位置的取代基对反应立体选择性的影响。这些烷基化反应的合成用途通过顺式和反式3,5-二取代,2,5-二取代和2,3,5-三取代对映体纯哌啶以及吲哚生物碱20 R-和20 S-的合成来说明。二氢裂解胺。