A novel compound of the formula: A--Z--Ar.sup.1 1'CO--Ar.sup.2 wherein A is a condensed pyrimidinone or condensed pyridazinone ring; Ar.sup.1 and Ar.sup.2 are independently a ring; Z is a divalent group, or a salt thereof which have an excellent antitumor activity.
一种新的化合物,其
化学式为:A--Z--Ar.sup.1 1'CO--Ar.sup.2,其中A是一个紧凑的
嘧啶酮或紧凑的
吡啶并酮环;Ar.sup.1和Ar.sup.2分别是一个环;Z是一个二价基团,或其盐,具有出色的抗肿瘤活性。