Saturated Heterocyclic Aminosulfonyl Fluorides: New Scaffolds for Protecting-Group-Free Synthesis of Sulfonamides
作者:Sergey A. Zhersh、Oleksandr P. Blahun、Iryna V. Sadkova、Andrey A. Tolmachev、Yurii S. Moroz、Pavel K. Mykhailiuk
DOI:10.1002/chem.201801140
日期:2018.6.12
salts. The compounds were found to be stable upon storage and could be used for the protecting‐group‐free synthesis of sulfonamides. In the presence of the −SO2F group, the nitrogen atom could be modified by means of acylation, arylation, or reductive amination to give products that have high potential for the synthesis of bioactive compounds.
Novel oxadiazole compounds, pharmaceutical compositions containing such compounds and the use of those compounds or compositions as agonists or antagonists of the S1P family of G protein-coupled receptors for treating diseases associated with modulation of S1P family receptor activity, in particular by affording a beneficial immunosuppressive effect are disclosed.
[EN] PROCESS FOR THE PREPARATION OF SILODOSIN AND ITS NOVEL INTERMEDIATES<br/>[FR] PROCÉDÉ DE PRÉPARATION DE SILODOSIN ET DE NOUVEAUX INTERMÉDIAIRES DE CELUI-CI
申请人:RANBAXY LAB LTD
公开号:WO2012014186A1
公开(公告)日:2012-02-02
The present invention relates to novel intermediates of silodosin and a process for their preparation. The present invention further relates to a process for the preparation of silodosin using the novel intermediates.
本发明涉及瑟洛定的新型中间体及其制备方法。本发明还涉及使用这些新型中间体制备瑟洛定的方法。
Enantioselective Synthesis of <i>N</i>-Benzylic Heterocycles: A Nickel and Photoredox Dual Catalysis Approach
作者:Cristofer Pezzetta、Davide Bonifazi、Robert W. M. Davidson
DOI:10.1021/acs.orglett.9b03338
日期:2019.11.15
Reported herein is a dual nickel- and photoredox-catalyzed modular approach for the preparation of enantioenriched N-benzylic heterocycles. α-Heterocyclic carboxylic acids, easily obtainable from common commercial material, are reported as suitable substrates for a decarboxylative strategy in conjunction with a chiral pyridine–oxazoline (PyOx) ligand, providing quick access to enantioenriched drug-like
METHOD FOR PRODUCING OPTICALLY ACTIVE CARBOXYLIC ACID ESTER
申请人:TOKYO UNIVERSITY OF SCIENCE FOUNDATION
公开号:US20170008820A1
公开(公告)日:2017-01-12
Provided is a method for producing an optically active carboxylic acid ester at a high yield and with high enantioselectivity using dynamic kinetic resolution, said optically active carboxylic acid ester having an α-nitrogen substituent. This method for producing an optically active carboxylic acid ester includes a step in which racemic carboxylic acid represented by formula (a) and a specific alcohol or phenol derivative are reacted in a polar solvent having a dipole moment of at least 3.5 in the presence of an acid anhydride and an asymmetric catalyst, one enantiomer of the racemic carboxylic acid is selectively esterified, and the other enantiomer is racemized. In formula (a), Ra1 represents a nitrogen-containing heteroaromatic ring group bonded to an assymetric carbon via a nitrogen atom constituting a ring, and Ra2 is an organic group.