Process for preparing a cyclic amino acid anticonvulsant compound
申请人:Warner-Lambert Company
公开号:US06294690B1
公开(公告)日:2001-09-25
An improved process for the preparation of a cyclic amino acid by a novel synthesis is described where benzonitrile is treated with an alkali metal and an amine under Birch reduction conditions to generate in situ an anionic intermediate which is alkylated with an &agr;-haloacetic acid moiety which is subsequently converted to the desired product, as well as valuable intermediates used in the process.
Process for cyclic amino acid anticonvulsant compounds
申请人:Warner-Lambert Company
公开号:US05319135A1
公开(公告)日:1994-06-07
An improved process for the preparation of cyclic amino acids by a novel synthesis is described where a dinitrile derivative is converted in two steps to the desired products, as well as valuable intermediates used in the process.
Nitrilase-Catalyzed Selective Hydrolysis of Dinitriles and Green Access to the Cyanocarboxylic Acids of Pharmaceutical Importance
作者:Dunming Zhu、Chandrani Mukherjee、Edward R. Biehl、Ling Hua
DOI:10.1002/adsc.200700067
日期:2007.7.2
further explore its synthetic applications, the nitrilase bll6402 from Bradyrhizobium japonicum strain USDA110 has been examined toward the hydrolysis of various dinitriles. It has been found that nitrilase bll6402 effectively hydrolyzed α,ω-dinitriles to ω-cyanocarboxylic acids, and the selectivity was independent of the substrate chain length. This feature is distinct from all the known nitrilases of
prepared with high efficiency by nitrile hydratase-catalyzed regioselectivehydration of 1-cyanocyclohexaneacetonitrile. Kinetic analysis and molecular docking of three recombinant amidase demonstrated that amidase (Pa-Ami) from Pantoea sp. was the most robust biocatalyst for hydrolysis of 1-cyanocyclohexaneacetamide with the kcat/Km value of 208.2 ± 16.2 mM−1 s−1. Some key parameters of the bioprocess
Biocatalytic preparation of 1-cyano-cyclohexaneacetic acid
申请人:Wong Wing John
公开号:US20050009154A1
公开(公告)日:2005-01-13
The present invention is directed to novel biocatalytic processes for the conversion of aliphatic ∝, ω-dinitriles into the corresponding ω-nitrilecarboxylic acid. More particularly, the present invention provides a method for the conversion of 1-cyanocyclohexaneacetonitrile to 1-cyanocyclohexaneacetic acid using an enzyme catalyst with nitrilase activity. 1-cyanocyclohexaneacetic acid is a useful intermediate in the synthesis of gabapentin.