Research on heterocyclic compounds. X.-Imidazo[1,2-a]pyrazine derivatives: synthesis and antiinflammatory activity.

Since we had previously observed the considerable anti-inflammatory activity of imidazo[1,2-a]pyrazine 2-acetic acid, we prepared a series of imidazo[1,2-a]pyrazine derivatives, bearing some substituents on the pyrazine ring and a carboxylic, acetic or alpha-methylacetic moiety on the imidazole ring. These new compounds were tested for antiinflammatory, analgesic, antipyretic and ulcerogenic activities.