Novel tetrahydropyrido[4,3-d]pyrimidines as gastric antilesion agents

Abstract A variety of substituted tetrahydropyrido[4,3- d ]pyrimidines was prepared and found to possess gastric antilesion against ethanol-induced lesions in rats. The more potent compounds possessed similar activity against aspirin-induced gastric lesions. A selective group of compounds was determined to be inactive as gastric antisecretory agents in rabbit isolated parietal cells. The antilesion properties of these tetrahydropyrido[4,3- d ]pyrimidines make them a potential alternative to prostaglandin therapy for gastric antilesion therapy and may have clinical utility in peptic ulcer disease.