Enzymatic Kinetic Resolution of 1,3-Dioxolan-4-one and 1,3-Oxathiolan-5-one Derivatives: Synthesis of the Key Intermediate in the Industrial Synthesis of the Nucleoside Reverse Transcriptase Inhibitor AMDOXOVIR
作者:Alfred Popp、Andrea Gilch、Anne-Laure Mersier、Hermann Petersen、Jodoca Rockinger-Mechlem、Jürgen Stohrer
DOI:10.1002/adsc.200303184
日期:2004.5
The resolution of racemic 1,3-dioxolan-4-one and 1,3-oxathiolan-5-one derivatives such as (4-oxo-1,3-dioxolan-2-yl)methyl 2-methylpropanoate (2) by enzymatic solvolysis was investigated. The resolution of 2, a precursor for the synthesis of the nucleoside reverse transcriptase inhibitor Amdoxovir, was optimized in terms of solvent/nucleophile, reaction conditions, and enzyme. The use of lipase from
通过酶促拆分外消旋的1,3-二氧戊环-4-酮和1,3-氧杂噻喃-5-酮衍生物,例如(4-氧代-1,3-二氧杂环戊烷-2-基)2-甲基丙酸甲酯(2)研究了溶剂分解。在溶剂/亲核试剂,反应条件和酶方面优化了2的分辨率(一种用于合成核苷逆转录酶抑制剂Amdoxovir的前体)。使用来自南极假丝酵母B(CALB)的脂肪酶和甲醇作为亲核试剂和溶剂可产生有效的拆分效果,并且可以轻松分离出产物(R)-2。可以分离底物分解的产物,并将其重新用于合成外消旋体2。通过具有不同取代模式的其他底物的拆分,证明了该酶拆分的广泛应用。该方法为对映体纯的1,3-二氧杂戊环4-酮和1,3-氧杂噻吩基5-酮提供了前所未有的新途径。