Proline-Catalyzed, Asymmetric Mannich Reactions in the Synthesis of a DPP-IV Inhibitor
作者:Jacob M. Janey、Yi Hsiao、Joseph D. Armstrong
DOI:10.1021/jo0519458
日期:2006.1.1
A highly stereoselective l-proline-catalyzed, asymmetric direct Mannich reaction between a glyoxalate-derived imine and phenyl acetaldehyde was employed for the formation of a syn substituted β-phenyl homoserine. This Mannich adduct was then readily elaborated to a functionalized β-phenyl aspartic acid derivative through a series of mild and efficient transformations.
乙二醛衍生的亚胺和苯基乙醛之间的高度立体选择性的1-脯氨酸催化的不对称直接曼尼希反应被用于形成顺式取代的β-苯基高丝氨酸。然后,通过一系列温和有效的转化,可以轻松地将此曼尼希加合物修饰为功能化的β-苯基天冬氨酸衍生物。