Diastereoselective Hydrolysis of Branched Malonate Diesters by Porcine Liver Esterase: Synthesis of 5‐Benzyl‐Substituted C
<sup>α</sup>
‐Methyl‐β‐proline and Catalytic Evaluation
作者:Hari Kiran Kotapati、Jamarii D. Robinson、Daniel R. Lawrence、Kimberly R. Fortner、Caleb W. Stanford、Douglas R. Powell、Rainer Wardenga、Uwe T. Bornscheuer、Douglas S. Masterson
DOI:10.1002/ejoc.201700605
日期:2017.5.26
β-proline analogue was tested for activity as a catalyst of the Mannich reaction. The β-proline analogue derivedfrom the hydrolysis reaction by the crude PLE appeared to catalyze the Mannich reaction between an α-imino ester and an aldehyde providing decent to good diastereoselectivities. However, the enantioselectivities in the reaction was low. The second diastereomer of the 5-benzyl-substituted Cα-methyl-β-proline