화학공학소재연구정보센터
Enzyme and Microbial Technology, Vol.19, No.5, 361-366, 1996
Selectivity Enhancement of PPL-Catalyzed Resolution by Enzyme Fractionation and Medium Engineering - Syntheses of Both Enantiomers of Tetrahydropyran-2-Methanol
(+/-)-Tetrahydropyran-2-methanol (1) was successfully resolved into both enantiomers on a preparative scale after optimization by hydrolysis of its butyrate ester (+/-)-3 to (R)-(-)-3 (ee greater than or equal to 99%). The antipodal alcohol (S)-(+)-1 (ee greater than or equal to 95%) was obtained after recycling of the moderately S-enriched 1 to the butyrate ester 3 and subsequent hydrolysis. A fourfold increase in enantioselectivity (E value = 24) was observed when hydrolysis was performed using one of the fractions. Tetrahydrofurfuryl alcohol (2) could not be resolved since the best selectivity attained was E = 3.1 from hydrolysis by the lipase B of Candida antarctica. Resolution by transesterification was found to be unsuitable for both compounds.