Cs. Chang et Sw. Tsai, A FACILE ENZYMATIC PROCESS FOR THE PREPARATION OF (S)-NAPROXEN ESTER PRODRUG IN ORGANIC-SOLVENTS, Enzyme and microbial technology, 20(8), 1997, pp. 635-639
A facile enzymatic synthesis process has been developed to directly pr
epare the 4-morpholinoethyl ester prodrug of (s)-Naproxen from racemic
Naproxen using lipases as the biocatalysts in the organic solvent. Wi
th the careful selection of lipase (Lipase MY) and reaction medium (cy
clohenane), a high enantiomeric ratio of 136 for the enzyme was obtain
ed. A Ping-Pong Bi Bi mechanism with competitive inhibition by the alc
ohol was illustrated from the variation of initial rates with substrat
e concentrations. (C) 1997 by Elsevier Science Inc.