Stereoselective Synthesis of the Key Intermediates of the HIV Protease Inhibitor Fosamprenavir and Its Diastereomer
作者:Miloš Sedlák、Illia Panov、Pavel Drabina、Jiří Hanusek
DOI:10.1055/s-0033-1338803
日期:——
Highly stereoselective Henry reaction has been used in the synthesis of the fosamprenavir precursor (2 S ,3 R )- N - tert- butyloxycarbonyl-2-amino-3-hydroxy-1-phenyl-4-nitrobutane and its 2 S ,3 S diasteromer from N-tert- butyloxycarbonyl-( S )-phenylalaninal and nitromethane. The complex of (2 S ,5 R )- or (2 R ,5 S )-5-isopropyl-5-methyl-2-(pyridine-2-yl)imidazolidine-4-one with copper(II) acetate
高度立体选择性亨利反应已用于合成福沙那韦前体 (2 S ,3 R )-N-叔丁氧羰基-2-氨基-3-羟基-1-苯基-4-硝基丁烷及其 2 S ,3 S N-叔丁氧羰基-(S)-苯丙醛和硝基甲烷的非对映异构体。(2 S ,5 R )-或(2 R ,5 S )-5-异丙基-5-甲基-2-(吡啶-2-基)咪唑烷-4-酮与乙酸铜(II)的络合物已得到用作催化剂,分别为产物提供 2 S ,3 R 绝对构型(dr = 90:10,总收率 89%)或 2 S,3 S(dr = 99:1,总收率 94%)。