Unusual Orthogonality in the Cleavage Process of Closely Related Chelating Protecting Groups for Carboxylic Acids by Using Different Metal Ions
作者:Stephan Mundinger、Uwe Jakob、Willi Bannwarth
DOI:10.1002/chem.201302708
日期:2014.1.27
conditions, these protectinggroups are also stable under acidic and basic conditions, allowing them to be used in combination with the ester protection of carboxylic acids. The cleavage of these protectinggroups is activated by the chelation of metal ions, involving an unusual coordination of the amide nitrogen. Despite their similarity, cleavage of these protectinggroups is possible in both a stepwise
carboxamide and ketocarboxamide mixtures under various conditions, with the predominant formation of ketocarboxamide even at low carbonmonoxidepressure, the aminocarbonylation of iodoalkenes under same conditions gave the corresponding unsaturated carboxamide exclusively. Most of the carboxamides and phenylglyoxylamides, obtained via single and double carbonmonoxide insertion, respectively, were isolated
[EN] N-SUBSTITUTED-SULFAMOYLBENZOIC ACID DERIVATIVES, METHOD FOR PREPARING THEREOF AND ANTIVIRAL PHARMACEUTICAL COMPOSITION COMPRISING THE SAME<br/>[FR] DERIVES D'ACIDE SULFAMOYLBENZOIQUE N-SUBSTITUE, LEUR PROCEDE DE PREPARATION ET COMPOSITION PHARMACEUTIQUE ANTIVIRALE LES CONTENANT
申请人:B & C BIOPHARM CO LTD
公开号:WO2006011719A1
公开(公告)日:2006-02-02
The present invention relates to N-substituted-sulfamoylbenzoic acid derivatives useful as an antiviral agent, and more particularly the present invention relates to novel N-substituted-sulfamoylbenzoic acid derivatives having an excellent inhibitory effect on replication of Hepatitis C virus (HCV) and pharmaceutically acceptable salts thereof, a preparation method thereof, and an antiviral pharmaceutical composition comprising the compound as an effective component. The N-substituted-sulfamoylbenzoic acid derivatives according to the present invention have an excellent inhibitory effect on replication of Hepatitis C virus (HCV) and thus can be advantageously used as a therapeutic or prophylactic agent of hepatitis C.
create greater bulk around phenanthroline N′s, hence excluding them from metal ion binding. Chemosensor 1 showed red shifted and increased absorbance with Cu2 + ions only upon examination for its recognition ability towards various cations. The selectivity displayed by the synthesised model compound 2 towards Cu2 + ions ascertained the participation of pyridine N′s of DPA as the major binding sites
The present invention aims to prevent and/or treat malaria using an antimalarial drug comprising, as an active ingredient, a metal chelator represented by the following formula (I), (III), (IV), (V), (VI), or (VII), such as tris(2-pyridylmethyl)amine.