Reduction of carbonyl compounds using the carbonyl reductase of Kluyveromyces marxianus
申请人:Korea Institute of Science and Technology
公开号:US07094908B2
公开(公告)日:2006-08-22
A compound represented by a general formula (Ia) or (Ib) and a stereo-selective preparation method thereof using a carbonyl reductase which is separated from Kluyveromyces marxianus. The compound can be prepared by reduction of substituted β-keto ester and can be used as an intermediate in preparing β-lactam group antibiotics.
Engineering a Carbonyl Reductase to Simultaneously Increase Activity Toward Bulky Ketone and Isopropanol for Dynamic Kinetic Asymmetric Reduction via Enzymatic Hydrogen Transfer
It is very challenging to engineer a carbonyl reductase with simultaneously improved activity toward both a bulky ketone and isopropanol, enabling substrate-coupled NAD(P)H regeneration for the ketone reduction. In this study, a mutant M242F/Q245T of the carbonyl reductase from Sporobolomyces salmonicolor was identified to simultaneously enhance its activity toward both methyl 2-phthalimidomethyl-3-oxobutanoate
Imidomethylation of C-nucleophiles using O-phthalimidomethyl trichloroacetimidate and catalytic amounts of TMSOTf
作者:Ibrahim A.I Ali、El Sayed H El Ashry、Richard R Schmidt
DOI:10.1016/j.tet.2004.04.011
日期:2004.5
The O-phthalimidomethyl trichloroacetimidate (1), as a latent aminomethylating agent, exhibits high electrophilicity towards a variety of C-nucleophiles in the presence of catalytic amounts of TMSOTf and mild reaction conditions. The nucleophiles include aromatics, alkenes and active methylene compounds 2-11 whereby a phthalimidomethyl group could be introduced to give compounds 12-22. Removal of the phthaloyl group gave the respective amines, beta-amino ketones, and beta-amino acids. The O-(trichloroacetamido)methyl trichloroacetimidate (35) was also found to be a good amidomethylating agent. (C) 2004 Elsevier Ltd. All rights reserved.
US7094908B2
申请人:——
公开号:US7094908B2
公开(公告)日:2006-08-22
[EN] COMPOUNDS AND COMPOSITIONS AS MODULATORS OF GPR119 ACTIVITY<br/>[FR] COMPOSÉS ET COMPOSITIONS POUVANT SERVIR DE MODULATEURS DE L'ACTIVITÉ DU GPR119