Oxidative conversion of hydrazides of carboxylic acids to acids, esters and amides using Cu salts was studied. Acids were obtained in high yields by using a catalytic amount of Cu(OAc)2 at room temperature by bubbling oxygen. Hydrazides were converted to esters by the treatment with Cu(OR)Cl or Cu(OR)2 formed in situ from CuCl2 and sodium alkoxide. Amides were obtained in high yields by the oxidation
作者:Paul A. Grieco、Douglas S. Clark、Gregory P. Withers
DOI:10.1021/jo01330a028
日期:1979.8
Synthesis and biological evaluation of a series of fatty acid amides from Echinacea
作者:Yasamin Moazami、Travis V. Gulledge、Scott M. Laster、Joshua G. Pierce
DOI:10.1016/j.bmcl.2015.06.024
日期:2015.8
Alkylamides are lipophilic constituents of Echinacea and possess numerous biological activities. Although significant effort has been focused on the study of crude Echinacea extracts, very little is known regarding the activities of the individual constituents that make up these herbal treatments. Herein we explore the SAR of simple alkylamides found in Echinacea extracts with respect to their ability to decrease the production of the pro-inflammatory mediator TNF-alpha. Our results have revealed the key structural requirements for activity and provide lead compounds for further investigation of these poorly understood molecules. (C) 2015 Elsevier Ltd. All rights reserved.