作者:Fritz Theil
DOI:10.1016/0957-4166(95)00214-a
日期:1995.7
The synthesis of enantiomerically pure β,γ-disubstituted γ-lactones is described based on the lipase-catalysed asymmetrisation of the cis-cyclopent-2-ene-1,4-diol derivatives 1 or 3. The cyclopentanones 7 and ent-7 have been obtained via epoxidation of the chiral monoacetates 2 or ent-2, respectively, followed by protecting group interconversion and oxidation. Baeyer-Villiger oxidation of 7 and ent-7
基于顺式-环戊-2-烯-1,4-二醇衍生物1或3的脂肪酶催化不对称性,描述了对映体纯的β,γ-二取代γ-内酯的合成。分别通过手性单乙酸酯2或ent-2的环氧化,然后进行保护基的相互转化和氧化,获得了环戊酮7和ent-7 。7和ent-7的Baeyer-Villiger氧化以及随后的酸性甲醇分解分别提供了标题化合物9和ent-9 。