Stereoselective reduction of N-hydroxy-α-iminocarbonyl-oligopeptide methyl esters with Zn–MsOH
作者:Naoki Kise、Shuji Takaoka、Masahiro Yamauchi、Nasuo Ueda
DOI:10.1016/s0040-4039(02)01752-5
日期:2002.10
The reduction of N-hydroxy-α-imino esters with Zn–MsOH in THF afforded α-amino esters in high yields. The reduction of N-hydroxy-α-iminocarbonyl-oligopeptide methyl esters prepared from l-phenylalanine and l-leucine di-, tri-, tetrapeptides gave the corresponding S-formed oligopeptide methyl esters in moderate diastereoselectivities.
在THF中用Zn-MsOH还原N-羟基-α-亚氨基酯可高产率获得α-氨基酯。由1-苯丙氨酸和1-亮氨酸二-,三-,四肽制备的N-羟基-α-亚氨基羰基-寡肽甲酯的还原得到中等中等非对映选择性的相应的S-形成的寡肽甲酯。