A chemoenzymatic synthesis of a-ring key-intermediates for 1α,25-dihydroxyvitamin d3 and analogues
作者:Sara Vrielynck、Maurits Vandewalle、Ana M. García、José L. Mascareñas、Antonio Mouriño
DOI:10.1016/0040-4039(95)01902-t
日期:1995.12
A short and practical synthesis of the 1,7-enyne A-ring intermediate and of Uskokovic's phosphine-oxide precursor is described starting from the aldol product of acrolein with t-butyl acetate. Enantiopure β-hydroxy ester is obtained upon lipase-catalyzed resolution.
从丙烯醛与乙酸叔丁酯的醛醇产物开始,描述了1,7-烯炔A环中间体和乌斯科科维奇的膦氧化物前体的简短而实用的合成。对映体纯的β-羟基酯是在脂肪酶催化的拆分下获得的。