作者:Kerstin Wünsche、Ulrich Schwaneberg、Uwe T. Bornscheuer、Hartmut H. Meyer
DOI:10.1016/0957-4166(96)00243-1
日期:1996.7
phenoxy-2-propanol) were synthesized. Key step is the lipase-catalyzed kinetic resolution of rac-3-hydroxy esters either by O-acylation using vinyl acetate or by hydrolysis of the ester group. Both approaches were highly enantioselective (> 95 %ee) with E-values > 150 using lipase from Pseudomonas cepacia. The formal synthesis of (−)-(S)-propranolol was developed in subsequent steps.
合成了对映体纯的β-阻滞剂(普萘洛尔,阿普洛尔和1-(异丙氨基)-3-对甲氧基-苯氧基-2-丙醇)。关键步骤是使用乙酸乙烯酯的O-酰化作用或酯基的水解,可实现rac -3-羟基酯的脂肪酶催化动力学拆分。两种方法均使用洋葱假单胞菌的脂肪酶对映体选择性高(> 95%ee),E值> 150 。在随后的步骤中开发了(-)-(S)-普萘洛尔的形式合成。