Regioselective synthesis of cyclodextrin mono-substituted conjugates of non-steroidal anti-inflammatory drugs at C-2 secondary hydroxyl by protease in non-aqueous media
摘要:
Three P-cyclodextrin (P-CD) conjugates of non-steroidal anti -inflammatory drugs were synthesized by enzymatic methods. Transesterification of P-CD with vinyl ester of indomethacin, ketoprofien and etodolac was performed by the catalysis of alkaline protease from Bacillus subtilis in anhydrous DMF for 3 days. The drug molecules were selectively conjugated onto one of the secondary hydroxyl groups of P-CD through ester-linkage to improve their poor water solubility and absorption characteristics. The products were characterized by ESI-MS, H-1 NMR and C-13 NMR. The structures of products with monoacylation occurring at the C-2 secondary hydroxyl groups of P-CD were confirmed. (c) 2005 Elsevier Ltd. All rights reserved.
Verfahren zur Herstellung von stereoisomeren Carbonsäureestern
申请人:BASF AKTIENGESELLSCHAFT
公开号:EP1031629A2
公开(公告)日:2000-08-30
Die vorliegende Erfindung betrifft ein Verfahren zur Herstellung von stereoisomeren Carbonsäureestern bestehend aus einer Säure- und einer Alkohol-Komponente mit jeweils mindestens einem chiralen Zentrum, wobei mindestens ein Stereoisomer des Carbonsäureesters in einem Überschuß vorliegt, indem man einen racemischen Carbonsäureester mit einem racemischen Alkohol in Gegenwart einer Carboxylesterhydrolase (EC 3.1.1) umsetzt.
Regioselective synthesis of cyclodextrin mono-substituted conjugates of non-steroidal anti-inflammatory drugs at C-2 secondary hydroxyl by protease in non-aqueous media
作者:Na Wang、Qi Wu、Yong Mei Xiao、Chun Xiu Chen、Xian Fu Lin
DOI:10.1016/j.bmc.2005.03.031
日期:2005.6
Three P-cyclodextrin (P-CD) conjugates of non-steroidal anti -inflammatory drugs were synthesized by enzymatic methods. Transesterification of P-CD with vinyl ester of indomethacin, ketoprofien and etodolac was performed by the catalysis of alkaline protease from Bacillus subtilis in anhydrous DMF for 3 days. The drug molecules were selectively conjugated onto one of the secondary hydroxyl groups of P-CD through ester-linkage to improve their poor water solubility and absorption characteristics. The products were characterized by ESI-MS, H-1 NMR and C-13 NMR. The structures of products with monoacylation occurring at the C-2 secondary hydroxyl groups of P-CD were confirmed. (c) 2005 Elsevier Ltd. All rights reserved.