Diastereoselective Additions to (3S)-3-Aminodehydrocaprolactams: Development of a Versatile Synthesis of New Substituted CyclicL-Lysines
作者:Camille Levraud、Sandrine Calvet-Vitale、Gildas Bertho、Hamid Dhimane
DOI:10.1002/ejoc.200701004
日期:2008.4
cyclic 6,7-dehydro-L-lysine was employed as starting template to generate variously substituted enantiopure 3-aminocaprolactams. syn-Dihydroxylation, hydroxymethoxylation, halomethoxylation and subsequent eliminations were performed with this starting enelactam, thus leading, in regio- and stereoselective manners, to new mono-,di- and trisubstituted 3-aminocaprolactams. Structural and mechanistic aspects
使用容易获得的环状 6,7-脱氢-L-赖氨酸作为起始模板来生成各种取代的对映体纯 3-氨基己内酰胺。用这种起始烯内酰胺进行顺式二羟基化、羟基甲氧基化、卤代甲氧基化和随后的消除,从而以区域和立体选择性的方式产生新的单、二和三取代的 3-氨基己内酰胺。讨论了这些反应的结构和机械方面,以及本研究中观察到的高非对映选择性的起源。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2008)