Searching for new NO-donor aspirin-like molecules: Furoxanylacyl derivatives of salicylic acid and related furazans
作者:Loretta Lazzarato、Clara Cena、Barbara Rolando、Elisabetta Marini、Marco Lucio Lolli、Stefano Guglielmo、Elena Guaita、Giuseppina Morini、Gabriella Coruzzi、Roberta Fruttero、Alberto Gasco
DOI:10.1016/j.bmc.2011.08.018
日期:2011.10
A new group of derivatives of salicylic acid containing NO-donor furoxans, and the related des-NO-furazans, were synthesized and evaluated as new aspirin-like molecules. Their stability was assessed in acid (pH 1) and physiological solutions (pH 7.4), and in human serum. No compound exhibited COX-inhibitory activity against COX-1 and COX-2 isoforms, when tested up to 100 mu M, respectively, on isolated platelets and on monocytes. Phenylsulfonyl- and cyano-substituted furoxans inhibited platelet aggregation induced by collagen in human platelet-rich plasma, through a cGMP dependent mechanism. Furoxan derivatives displayed cGMP-dependent vasodilator activities, tested on rat aorta strips precontracted with phenylephrine. All products showed anti-inflammatory activity similar to that of ASA, tested on rats by the carrageenan-induced paw edema assay. Unlike ASA, all products showed markedly reduced gastrotoxicity in a rat lesion model. (C) 2011 Elsevier Ltd. All rights reserved.