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IJBT Vol.07(1) [January 2008] >


Title: Optical resolution of (R, S)-ibuprofen in organic solvent by porcine pancreatic lipase catalyzed enantioselective esterification
Authors: Ramachandran, Ganesh
Ananthanarayan, Laxmi
Keywords: Enantioselectivity
esterification
ibuprofen
NSAIDS
optical resolution
porcine pancreatic lipase
racemates
Issue Date: Jan-2008
Publisher: CSIR
Abstract: Porcine pancreatic lipase (PPL), a comparatively inexpensive enzyme, was used in the optical resolution of (R, S)-ibuprofen in methanol through enantioselective esterification. The different reaction parameters during the esterification of (R, S)-ibuprofen using PPL was studied with respect to temperature, time, enzyme concentration, substrate concentration and water content. The percentage conversion initially was 13%, which increased to 33% after optimization of the different reaction conditions. Surfactant coating of PPL resulted in a 2.5-fold increase in the hydrolytic activity of PPL. Surfactant coated PPL, when used in the esterification reaction slightly increased the percentage conversion from 21 to 22.5%. In all the reactions, PPL showed preference for catalyzing the esterification of S-(+)-ibuprofen.
Page(s): 94-98
ISSN: 0975-0967 (Online); 0972-5849 (Print)
Source: IJBT Vol.07(1) [January 2008]

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