Chemo-enzymatic preparation of optically active endo-bicyclo[4.1.0]heptan-2-ols
摘要:
Resolutions of endo-bicyclo[4.1.0]heptan-2-ols were achieved by acylation in the presence of lipase from Candida antarctica (Novozym(R)). The (1S,2R,6R) enantiomers reacted faster and the enantiomeric ratios were between 60 and 800 for the 6-substituted bicycloalkanols. (C) 1999 Published by Elsevier Science Ltd. All rights reserved.
Resolutions of endo-bicyclo[4.1.0]heptan-2-ols were achieved by acylation in the presence of lipase from Candida antarctica (Novozym(R)). The (1S,2R,6R) enantiomers reacted faster and the enantiomeric ratios were between 60 and 800 for the 6-substituted bicycloalkanols. (C) 1999 Published by Elsevier Science Ltd. All rights reserved.
Enzyme- and Ruthenium-Catalyzed Dynamic Kinetic Resolution of Functionalized Cyclic Allylic Alcohols
作者:Richard Lihammar、Renaud Millet、Jan-E. Bäckvall
DOI:10.1021/jo402086z
日期:2013.12.6
Enantioselective synthesis of functionalized cyclic allylic alcohols viadynamic kinetic resolution has been developed. Cyclopentadienylruthenium catalysts were used for the racemization, and lipase PS-IM or CALB was employed for the resolution. By optimization of the reaction conditions the formation of the enone byproduct was minimized, making it possible to prepare a range of optically active functionalized