[EN] PROCESS FOR PHENYLACETIC ACID DERIVATIVES<br/>[FR] PROCEDES DE PRODUCTION DE PRODUITS DERIVES D'ACIDES PHENYLACETIQUES
申请人:NOVARTIS AG
公开号:WO2001023346A2
公开(公告)日:2001-04-05
A process for the production of a compound of formula (I), or a pharmaceutically acceptable salt thereof, or a pharmaceutically acceptable prodrug ester thereof, comprising cleaving a lactam of formula (II) wherein the symbols are as defined, with a base; and precursors therefor and processes for the preparation of the precursors. The compounds of formula (I) are pharmaceutically active compounds which are selective inhibitors of Cyclooxygenase (II).
A process for the production of a compound of Formula I, or a pharmaceutically acceptable salt thereof, or a pharmaceutically acceptable prodrug ester thereof,
comprising cleaving a lactam of formula II
wherein the symbols are as defined, with a base; and precursors therefor and processes for the preparation of the precursors. The compounds of Formula I are pharmaceutically active compounds which are selective inhibitors of Cyclooxygenase II.
Using a toolbox, sulfur and amine ligands are attached to a variety of hydrophobic and hydrophilic resins, and the combinations were tested for the removal of heavy metals from a number of products, prepared by metal-catalyzed reactions. As a result, cheap combinations of silica resins and simple polyamines proved to be among the most effective metal scavengers particularly in apolar solvents such as cyclohexane. Expensive cyclic polyamines are not suitable, owing to kinetic retardation of complexation. Functionalized PEG-based polymers, originally designed for solid phase synthesis, show promising performance as metal scavengers. The results are discussed and compared to alternative approaches for purification such as salt-formation and chemical downstream transformation.
US7906677B2
申请人:——
公开号:US7906677B2
公开(公告)日:2011-03-15
Synthesis of new N-aryl oxindoles as intermediates for pharmacologically active compounds
作者:Murat Acemoglu、Thomas Allmendinger、John Calienni、Jacques Cercus、Olivier Loiseleur、Gottfried H. Sedelmeier、David Xu
DOI:10.1016/j.tet.2004.09.064
日期:2004.12
Various new N-aryl oxindoles were synthesized as intermediates for the preparation of pharmacologicallyactive 2-(N-arylamino)-phenylacetic acids. Two novel approaches were explored for the construction of diarylamine and N-aryl oxindole core structures, in addition to Buchwald-arylamination and Smiles rearrangement. Condensation of anilines with 2-oxo-cyclohexylidene-acetic acid derivatives and subsequent