Dynamic Kinetic Resolution of Diarylmethanols with an Activated Lipoprotein Lipase
作者:Jusuk Lee、Yeonock Oh、Yoon Kyung Choi、Eunjeong Choi、Kyungwoo Kim、Jaiwook Park、Mahn-Joo Kim
DOI:10.1021/cs501629m
日期:2015.2.6
We explored the kinetic resolution of 31 different diarylmethanols with an activated lipoprotein lipase (LPL-D1) which was about 3000-fold more active than its native counterpart in organic solvent. Most of the substrates tested were accepted by LPL-D1 with good to high enantioselectivity in the kinetic resolution. Next, we explored the dynamic kinetic resolutions (DKRs) of these substrates (24 out of 31) using LPL-D1 and a ruthenium-based racemization catalyst in combination, which provided satisfactory yields (71-96%) and high enantiopurities (90-99% cc). As an illustrative example for the synthetic applications of the DKR procedure, we synthesized L-cloperastine, an antitussive drug, from phenyl-(p-trimethylsilylphenyl)methanol via DKR.
Kinetic and Dynamic Kinetic Resolution of Secondary Alcohols with Ionic-Surfactant-Coated <i>Burkholderia cepacia</i> Lipase: Substrate Scope and Enantioselectivity
作者:Cheolwoo Kim、Jusuk Lee、Jeonghun Cho、Yeonock Oh、Yoon Kyung Choi、Eunjeong Choi、Jaiwook Park、Mahn-Joo Kim
DOI:10.1021/jo3027627
日期:2013.3.15
Forty-four different secondaryalcohols, which can be classified into several types (II-IX), were tested as the substrates of ionic surfactant-coated Burkholderiacepacialipase (ISCBCL) to see its substrate scope and enantioselectivity in kinetic and dynamickineticresolution (KR and DKR). They include 6 boron-containing alcohols, 24 chiral propargyl alcohols, and 14 diarylmethanols. The results