Process for the manufacture of alkali salts of 3,5-disubstituted
申请人:Ciba-Geigy Corporation
公开号:US04034006A1
公开(公告)日:1977-07-05
A new process for the preparation of alkalimetal salts of 3,5-substituted 4-hydroxybenzoic acids and the free acids thereof, which comprises reacting a 2,6-disubstituted phenol in a mixture of water and a dipolar aprotic solvent with an alkalimetal hydroxide, removing the water, treating the reaction mixture with carbon dioxide and in case of preparing the free acids treating the reaction mixture with a mineral acid. The alkalimetal salts of 4-hydroxybenzoic acids and the free acids thereof are compounds which can be used as intermediates for stabilizers.
New analogues of butylated hydroxytoluene as anti-inflammatory and antioxidant agents
作者:George N. Ziakas、Eleni A. Rekka、Antonios M. Gavalas、Phaedra T. Eleftheriou、Panos N. Kourounakis
DOI:10.1016/j.bmc.2006.04.030
日期:2006.8
Amine or amide derivatives bearing the 2,6-di-tert-butyl phenol moiety are synthesised. Almost all are antioxidants, reduce acute inflammation and inhibit COX-1 and lipoxygenase activity. The most potent anti-inflammatory, COX-1 inhibitor and antioxidant agent, with low toxicity, is 2,6-di-tert-butyl-4-thiomorpholin-4-ylmethyl-phenol. (c) 2006 Elsevier Ltd. All rights reserved.