The discovery and structure-activity relationship of a novel series of coumarin-based TNF-alpha inhibitors is described. Starting from the initial lead la, various derivatives were prepared surrounding the coumarin core structure to optimize the in vitro inhibitory activity of TNF-alpha production by human peripheral blood mononuclear cells (hPBMC), stimulated by bacterial lipopolysaccharide (LPS). Selected compounds also demonstrated in vivo inhibition of TNF-alpha production in rats. (C) 2004 Elsevier Ltd. All rights reserved.
Regioselective Pd-catalyzed decarboxylative C-6 acylation of 7-O-carbamate coumarins and their anti-inflammatory evaluation
O-Carbamate assisted Palladium (II) catalyzed regioselective C–H acylation of coumarins at C-6 position with arylglyoxylic acids has been achieved. The decarboxylativeacylation of diverse 7-O-carbamate coumarins with wide range of arylglyoxylic acids produced solely the C-6 acylated coumarins. The synthesized molecules have been evaluated for their anti-inflammatory activity against RAW 264.7 macrophage