Among the structural analogs of pyridoquinazolines, compounds having a diverse biological activity have been dis- covered [1, 2]. We previously prepared derivatives of pyri- do[2, lb]quinazoline with pronounced anti-inflammatory and analgesic activity [3]. To continue these studies, and also to search for new drugs, we synthesized unknown derivatives of pyri- do[2,1-b]quinazole on the basis of 2-chloronicotinic acid, its nitrile and amides (Ia- h) [4] by reacting them with ...