The enhancement of enantioselectivities for lipase-catalyzed reactions by using carbamates
摘要:
The enantioselectivity of porcine pancreatic lipase-catalyzed resolution of 1-indanol was enhanced up to 3 fold in the presence of carbamates. The optimum incubation time for 4-nitrophenyl-N-hexyl carbamate and the enzyme was 18 h before this biocatalytic resolution. The optimum concentration of the inhibitor 4-nitrophenyl-N-hexyl carbamate in this resolution was 1 % mole equivalent of the substrate 1-indanol. (C) 1998 Elsevier Science Ltd. All rights reserved.
Removal of the acyl donor residue allows the use of simple alkyl esters as acyl donors for the dynamic kinetic resolution of secondary alcohols
作者:Gerard K.M. Verzijl、Johannes G. de Vries、Quirinus B. Broxterman
DOI:10.1016/j.tetasy.2005.02.028
日期:2005.5
dynamic kinetic resolution of secondary alcohols using a lipase and a ruthenium catalyst as developed by Bäckvall required some improvements to make it suitable for its use in an industrial process. The use of p-chlorophenyl acetate as acyldonor is not desirable in view of the toxicity of the side product. We herein report that simple alkyl esters can be used as acyldonors if the alcohol or ketone residue
Lin, Gialih; Chen, Show-Jane; Sun, Hwey-Lin, Journal of the Chinese Chemical Society, 1994, vol. 41, # 4, p. 459 - 466
作者:Lin, Gialih、Chen, Show-Jane、Sun, Hwey-Lin
DOI:——
日期:——
Microwave-promoted lipase-catalyzed reactions
作者:Gialih Lin、Wen-Yuan Lin
DOI:10.1016/s0040-4039(98)00765-5
日期:1998.6
Lipase from porcine pancreas is demonstrated to catalyze acylation reactions in organic media under microwave irradiation. Reaction rates and enantioselectivities are significantly enhanced 1-14 and 3-9 fold, respectively. (C) 1998 Elsevier Science Ltd. All rights reserved.