Alkylation of 4-hydroxyproline ester derivatives. Diastereoselectivity guided by the anomeric effect and π-interaction
作者:Shinji Nagumo、Megumi Mizukami、Noriaki Akutsu、Atsushi Nishida、Norio Kawahara
DOI:10.1016/s0040-4039(99)00468-2
日期:1999.4
The alkylation of 4-hydroxyproline derivatives 7 and 1 2 with a range of alkylating reagents was examined. The stereoselectivity was found to be dependent on the reagent and the N-protecting group. This was explained by a concept based on the stereoelectronic effect and π-interaction.
检查了4-羟基脯氨酸衍生物7和1 2与一系列烷基化试剂的烷基化。发现立体选择性取决于试剂和N-保护基。这是通过基于立体电子效应和π相互作用的概念来解释的。