Asymmetric Synthesis of Arylpropionic Acids and Aryloxy Acids by Using Lactamides as Chiral Auxiliaries
作者:Alessandra Ammazzalorso、Rosa Amoroso、Giancarlo Bettoni、Barbara De Filippis、Marialuigia Fantacuzzi、Letizia Giampietro、Cristina Maccallini、Maria L. Tricca
DOI:10.1002/ejoc.200600484
日期:2006.9
resolution methods have been applied for the asymmetric synthesis of pharmaceutical arylpropionic acids and aryloxy acids by using amides of (S)-lactic acid as chiral auxiliaries. For arylpropionic acids the esterification mediated by dicyclohexylcarbodiimide (DCC) and 4-(dimethylamino)pyridine (DMAP) proceeds with good asymmetric induction, while for aryloxyacetic acids the key-step is a diastereoselective
通过使用(S)-乳酸的酰胺作为手性助剂,两种不同的动态动力学拆分方法已应用于药物芳基丙酸和芳氧基酸的不对称合成。对于芳基丙酸,由二环己基碳二亚胺 (DCC) 和 4-(二甲氨基)吡啶 (DMAP) 介导的酯化以良好的不对称诱导进行,而对于芳氧基乙酸,关键步骤是在三乙胺和正己基碘化铵存在下的非对映选择性取代反应作为添加剂。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2006)