title: Synthesis and biological evaluation of 1,3-diphenylprop-2-yn-1-ones as dual inhibitors of cyclooxygenases and lipoxygenases.
abstract: A new class of 1,3-diphenylprop-2-yn-1-ones possessing a p-MeSO2 COX-2 phamacophore on the C-3 phenyl ring was designed for evaluation as dual inhibitors of cyclooxygenase (COX) and lipoxygenase (LOX). Among the group of compounds evaluated, 1-(4-fluorophenyl)-3-(4-methanesulfonylphenyl)prop-2-yn-1-one (11j) exhibited excellent COX-2 inhibitory potency (COX-2 IC50 = 0.1 microM) and selectivity (SI = 300), whereas 1-(4-cyanophenyl)-3-(4-methanesulfonylphenyl)prop-2-yn-1-one (11d) exhibited an optimal combination of COX and LOX inhibition (COX-2 IC50 = 1.0 microM; COX-2 SI = 31.5; 5-LOX IC50 = 1.0 microM; 15-LOX IC50 = 3.2 microM).
authors.affiliation: Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, Edmonton, Alta., Canada T6G 2N8.
authors.forename: P N Praveen
authors.initials: PN
authors.lastname: Rao
authors.forename: Qiao-Hong
authors.initials: QH
authors.lastname: Chen
authors.forename: Edward E
authors.initials: EE
authors.lastname: Knaus
mesh_terms: D000480:Alkynes / Q000138:chemical synthesis / Q000494:pharmacology; D000818:Animals; D001665:Binding Sites; D016861:Cyclooxygenase Inhibitors / Q000138:chemical synthesis* / Q000494:pharmacology; D020128:Inhibitory Concentration 50; D007659:Ketones / Q000138:chemical synthesis / Q000494:pharmacology; D016859:Lipoxygenase Inhibitors / Q000138:chemical synthesis* / Q000494:pharmacology; D051379:Mice; D008958:Models, Molecular; D012756:Sheep; D011198:Solanum tuberosum; D013025:Glycine max; D013329:Structure-Activity Relationship
chemical_list: D000480:Alkynes; D016861:Cyclooxygenase Inhibitors; D007659:Ketones; D016859:Lipoxygenase Inhibitors; C022030:methylacetylene