Convenient Method for Synthesis of <i>N</i>-Protected α-Amino Epoxides: Key Intermediates for HIV Protease Inhibitors
作者:A. John Blacker、Mita Roy、Sivaramkrishanan Hariharan、Catherine Headley、Abhay Upare、Ashutosh Jagtap、Karuna Wankhede、Sushil Kumar Mishra、Dagadu Dube、Sanjay Bhise、Sandesh Vishwasrao、Nitin Kadam
DOI:10.1021/op100174j
日期:2011.3.18
A convenient method for synthesis of 2R,3S and 2S,3S N-Boc phenylalanine epoxides using readily available allylamine is described. Previous methods employed multistep synthetic routes from l-phenyl alanine that include use of m-chloroperbenzoic acid (m-CPBA) and a chromatographic method for purification of the desired diastereomers. Column purification could be eliminated by bringing in much improvement
描述了一种使用容易获得的烯丙胺合成2 R,3 S和2 S,3 S N -Boc苯丙氨酸环氧化物的简便方法。以前的方法使用多步从合成路线升-苯基丙氨酸,其中包括使用的米氯过苯甲酸(间- CPBA)和所期望的非对映体的纯化色谱法。可以通过对现有工艺进行重大改进来消除色谱柱纯化。通过替换m进一步增强了该过程-CPBA和oxone,一种对商业应用有利的环保试剂。所讨论的整个绿色过程涉及回收和再循环手性烯丙基胺的对映异构体,以及使用简单的经济方法合法分离环氧化物的非对映异构体。