作者:Shanghai Yu、Xiaotao Pu、Tiejun Cheng、Renxiao Wang、Dawei Ma
DOI:10.1021/ol060960b
日期:2006.7.1
trisubstituted piperidine moiety via condensation of a beta-keto sulfone with an l-alanine-derived bromide and subsequent alkylative cyclization and construction of its quinolizidine skeleton via a diastereoselective intramolecular conjugate addition. The possible stereochemical course for this conjugate addition is discussed.
[结构:见正文]描述了一条组装克拉维汀类化合物A和B和哌替明的短途路线,该路线的特征是通过将β-酮砜与L-丙氨酸衍生的溴化物缩合,随后烷基化环化和构建来精制其三取代哌啶部分。通过非对映选择性分子内共轭物的添加来合成其喹喔啉骨架。讨论了该共轭物添加的可能的立体化学过程。