Activation of hydrocinnamic acids with pentafluorophenol versus pentafluorothiophenol: Reactivity towards hexylamine
作者:Fernanda M.F. Roleira、Fernanda Borges、Lourdes C.R. Andrade、José A. Paixão、Maria J.M. Almeida、Rui A. Carvalho、Elisiário J. Tavares da Silva
DOI:10.1016/j.jfluchem.2008.09.013
日期:2009.2
In this work we describe and compare the synthesis of four new hexylamides of hydrocinnamic acids, namely hexylamide of hydrocinnamic, 3,4-dimethoxyhydrocinnamic, 4-hydroxy-3-methoxyhydrocinnamic and 3,4-dihydroxyhydrocinnamic acids via pentafluorophenyl esters (PFPEs) versus pentafluorophenyl thioesters (PFPTs) intermediates. It was found that the PRE are the best intermediates for this kind of synthesis giving reactions with less by products, easier work-up, higher overall yields and with the best reactivity towards hexylamine. The X-ray structures of two PRE are also reported. (C) 2008 Elsevier B.V. All rights reserved.
Catechol derivatives and pharmaceutical preparations containing same
申请人:MITSUI TOATSU CHEMICALS, Inc.
公开号:EP0333522B1
公开(公告)日:1994-08-17
US5232923A
申请人:——
公开号:US5232923A
公开(公告)日:1993-08-03
New phenolic cinnamic acid derivatives as selective COX-2 inhibitors. Design, synthesis, biological activity and structure-activity relationships
作者:Daniela Ribeiro、Carina Proença、Carla Varela、João Janela、Elisiário J. Tavares da Silva、Eduarda Fernandes、Fernanda M.F. Roleira
DOI:10.1016/j.bioorg.2019.103179
日期:2019.10
potent anti-inflammatory agents, with fewer gastrointestinal side effects. In this work, a new series of cinnamic acid derivatives, namely hexylamides, have been designed, synthesized and evaluated in human blood for their inhibitory activity of COX-1 and COX-2 enzymes. From this, newstructure-activityrelationships were built, showing that phenolic hydroxyl groups are essential for both COX-1 and COX-2