| Title : Utilizing hydrolases of opposite enantiopreference for the preparation of both enantiomers of (1R,7aR)-(-)- and (1S,7aS)-(+)-3,6,7,7a-tetrahydro-1-hydroxy-7a-methyl-1H-inden-5(2H)-one - Lo_2004_Chirality_16_267 |
| Author(s) : Lo LC , Chou TC , Shie JJ |
| Ref : Chirality , 16 :267 , 2004 |
|
Abstract :
Four racemic esters of (1R*,7aR*)-3,6,7,7a-tetrahydro-1-hydroxy-7a-methyl-1H-inden-5(2H)-one were prepared and subjected to hydrolysis with two types of hydrolases, including alcalase and three lipases. Alcalase and lipase showed opposite enantiopreference on these esters. Based on this result, we developed a gram-scale procedure using butanoate as the substrate, which was treated consecutively with alcalase and lipase from Candida rugosa (CRL), to give both enantiomers of the title compound in high yields and high enantiomeric excess. |
| PubMedSearch : Lo_2004_Chirality_16_267 |
| PubMedID: 15034910 |
Lo LC, Chou TC, Shie JJ (2004)
Utilizing hydrolases of opposite enantiopreference for the preparation of both enantiomers of (1R,7aR)-(-)- and (1S,7aS)-(+)-3,6,7,7a-tetrahydro-1-hydroxy-7a-methyl-1H-inden-5(2H)-one
Chirality
16 :267
Lo LC, Chou TC, Shie JJ (2004)
Chirality
16 :267