The inhibitory effects of a series of styrylheterocycles on the production of cyclooxygenase-2- mediated prostaglandin E2 (PGE2) were evaluated in lipopolysaccharide-stimulated RAW264. 7 murine macrophages. A new series of potential inhibitors, including 3-[2-(4- methoxy-phenyl)-vinyl]-thiophene, have been identified, thus providing novel chemical leads for the further development of potential inhibitors in this capacity. The suppression of COX- ...