Separate Sets of Mutations Enhance Activity and Substrate Scope of Amine Dehydrogenase
作者:Robert D. Franklin、Conner J. Mount、Bettina R. Bommarius、Andreas S. Bommarius
DOI:10.1002/cctc.201902364
日期:2020.5.7
average of 2.5‐fold higher activity toward aliphaticketones and an 8.0 °C increase in melting temperature. L‐AmDH‐TV did not show significant changes in relative activity for different substrates. In contrast, L39A, L39G, A112G, and T133G in varied combinations added to L‐AmDH‐TV changed the shape of the substrate binding pocket. L‐AmDH‐TV was not active on ketones larger than 2‐hexanone. L39A and L39G
(R)-Amination mediated by (R)-specific ω-transaminases generally requires costly d-alanine in excess to obtain the desired chiralamines in high yield. Herein, a one-pot, trienzymatic cascade comprising an (R)-specific ω-transaminase, an amine dehydrogenase, and a formate dehydrogenase was developed for the economical and eco-friendly synthesis of (R)-chiral amines. Using inexpensive ammonium formate as the
The asymmetric reductive amination of ketones with ammonia using engineered amine dehydrogenases (AmDHs) is a particularly attractive and environmentally friendly method for the synthesis of chiral amines. However, one major challenge for these engineered AmDHs is their limited range of accepted substrates. Herein, several engineered AmDHs were developed through the evolution of naturally occurring
[EN] INHIBITORS OF GROWTH FACTOR ACTIVATION ENZYMES<br/>[FR] INHIBITEURS D'ENZYMES D'ACTIVATION DE FACTEUR DE CROISSANCE
申请人:UNIV WASHINGTON
公开号:WO2016144654A1
公开(公告)日:2016-09-15
The present invention generally relates to compounds that are useful for inhibiting one or more of hepatocyte growth factor activator, matriptase, hepsin, Factor Xa, or thrombin. The present invention also relates to various methods of using the inhibitor compounds including treating a malignancy, a pre-malignant condition, or cancer by administering an effective amount of the inhibitor to a subject in need thereof.
Ruthenium Catalyzed Direct Asymmetric Reductive Amination of Simple Aliphatic Ketones Using Ammonium Iodide and Hydrogen
作者:Tamal Ghosh、Martin Ernst、A. Stephen K. Hashmi、Thomas Schaub
DOI:10.1002/ejoc.202000750
日期:2020.8.16
On the direct asymmetric reductive amination of aliphatic ketones to primary amines: By using Ru‐Binaphane as catalyst and NH4I as the amine source, it is possible to aminate prochiral aliphatic ketones with moderate ee values up to 74 %.