Intermolecular Aminocarbonylation of Alkenes using Concerted Cycloadditions of Iminoisocyanates
作者:Amanda Bongers、Christian Clavette、Wei Gan、Serge I. Gorelsky、Lyanne Betit、Kaitlyn Lavergne、Thomas Markiewicz、Patrick J. Moon、Nicolas Das Neves、Nimrat K. Obhi、Amy B. Toderian、André M. Beauchemin
DOI:10.1021/acs.joc.6b02713
日期:2017.1.20
that the LUMO of the iminoisocyanate is reacting with the HOMO of the alkene. Computational and experimental results support a concerted asynchronous [3 + 2] cycloaddition involving an iminoisocyanate, which was observed for the first time by FTIR under the reaction conditions. The products of this reaction are complex azomethineimines, which are precursors to valuable β-amino carbonyl compounds such
Enantioselective biocatalytic hydrolysis of β-aminonitriles to β-amino-amides using Rhodococcus rhodochrous ATCC BAA-870
作者:Varsha Chhiba、Moira L. Bode、Kgama Mathiba、Wendy Kwezi、Dean Brady
DOI:10.1016/j.molcatb.2011.12.005
日期:2012.4
A range of beta-aminonitriles (3-amino-3-phenylpropanenitrile and derivatives) were synthesised by reaction of various benzonitriles with acetonitrile and subsequent reduction of the resulting acrylonitrile products. These compounds were hydrolysed to the corresponding amides using the nitrile biocatalytic activity of Rhodococccus rhodochrous ATCC BAA-870. Results showed that the nitrile hydratase enzyme was enantioselective for these compounds, in particular 3-amino-3-p-tolylpropanenitrile and 3-amino-3-(4-methoxyphenyl)propanenitrile and the corresponding amides (up to 85% in one case). The reactions were performed at pH 9.0 after initial attempts at pH 7.0 were unsuccessful, most likely as a result of protonation of the 3-amino group at the lower pH. (C) 2012 Elsevier B.V. All rights reserved.
New ribofuranuronic acid derivatives, processes for preparation thereof and pharmaceutical compositions thereof
申请人:FUJISAWA PHARMACEUTICAL CO., LTD.
公开号:EP0071926B1
公开(公告)日:1986-10-08
PRMT5 INHIBITORS AND USES THEREOF
申请人:Epizyme, Inc.
公开号:US20170198006A1
公开(公告)日:2017-07-13
Described herein are compounds of Formula (I)-(XIII), pharmaceutically acceptable salts thereof, and pharmaceutical compositions thereof. Compounds of the present invention are useful for inhibiting PRMT5 activity. Methods of using the compounds for treating PRMT5-mediated disorders are also described.
METHOD FOR SYNTHESIZING NOVEL CHIRAL LIGAND, METAL CHELATE, A VARIETY OF NON-NATURAL AMINO ACIDS, MARAVIROC AND KEY INTERMEDIATE THEREOF
申请人:SHANGHAI INSTITUTE OF MATERIA MEDICA CHINESE ACADEMY OF SCIENCES
公开号:US20190233456A1
公开(公告)日:2019-08-01
Disclosed is a method for synthesizing a novel chiral ligand, a metal chelate, a variety of non-natural amino acids, Maraviroc and a key intermediate thereof. In the invention, (R)-2-methyl proline is selected and used as a starting raw material, (S)-β
3
-amino acid is obtained by asymmetric resolution induced by using a nickel chelate, and Maraviroc is synthesized by using (S)-3-amino-3-phenylpropionic acid as a key intermediate with a high yield and the ee value reaching 98.2% or more. The method of the present invention has widely available materials, mild synthetic process conditions, is easy to control, and produces a product of a high optical purity.