Chemo-enzymatic synthesis of (S)-(+)-cericlamine and related enantiomerically pure 2,2-disubstituted-2-aminoethanols
作者:Bernard Kaptein、Harold M. Moody、Quirinus B. Broxterman、Johan Kamphuis
DOI:10.1039/p19940001495
日期:——
The synthesis of (S)-(+)-cericlamine (S)-1 and related disubstituted amino alcohols is described as an example of the stereoselective synthesis of amino alcohols from disubstituted amino acids and their corresponding amides. Thus, the amino alcohols (S)-1, (R)-6 and (S)-7 are prepared from enantiomerically pure α-methyl-3,4-dichlorophenylalanine (amide), (R)-4 and (S)-5, respectively, by application
(S)-(+)-神经酰胺(S)-1和相关的二取代的氨基醇的合成被描述为由二取代的氨基酸及其相应的酰胺立体选择性地合成氨基醇的实例。因此,氨基醇(S)-1,(R)-6和(S)-7由对映体纯的α-甲基-3,4-二氯苯基丙氨酸(酰胺),(R)-4和(S)-制备。5,分别通过应用最近开发的钠-丙烷-1-醇或NaBH 4 -H 2SO 4还原法,然后还原烷基化。(R)-4和(S)-5的制备是通过相转移催化,然后用拟南芥的酰胺酶进行外消旋4的酶促水解。