Enzyme assisted synthesis of enantiomerically pure δ-lactones
摘要:
Both enantiomeric series of a wide variety of optically pure 6-alkylated delta-lactones - saturated as well as unsaturated - were prepared via an enzyme mediated route. The key reaction step is the nucleophilic ring opening of enantiomerically pure alkyl-oxiranes, accessible via the corresponding beta-hydroxythioethers which can be obtained enantiomerically pure via enzyme catalyzed kinetic resolutions.
Enzyme assisted synthesis of enantiomerically pure δ-lactones
摘要:
Both enantiomeric series of a wide variety of optically pure 6-alkylated delta-lactones - saturated as well as unsaturated - were prepared via an enzyme mediated route. The key reaction step is the nucleophilic ring opening of enantiomerically pure alkyl-oxiranes, accessible via the corresponding beta-hydroxythioethers which can be obtained enantiomerically pure via enzyme catalyzed kinetic resolutions.
Lipase catalyzed resolution of 1-t-butylthio-2-alkanols: Enzyme mediated routes to enantiomerically pure 1,2-epoxyalkanes and 2-alkanols
作者:Ulrich Goergens、Manfred P. Schneider
DOI:10.1016/s0957-4166(00)82099-6
日期:1992.9
A series of 1-t-butylthio-2-alkanols (R)- and (S)-1-5 were prepared via lipase catalyzed resolution of the corresponding chloroacetates (+/-)-1a-5a and further converted into the optically pure alkyloxiranes (R)-6-8 and 2-alkanols (R)-14-15