A compound having the structural formula, ##STR1## where R.sup.1 and R.sup.2 are independently hydrogen or hydroxyl. R.sup.2 and R.sup.3 are independently oxo or hydrogen, one of R.sup.5 and R.sup.6 is A--B and the other is hydrogen, hydroxyl, or a group A, wherein each A is a spacer group providing --NH-- or --CO-- in the bond with B (if present); at least one A group does not provide the residue of an .alpha.-amino acid adjacent the anthraquinone nucleus and the A of any A--B moiety is joined to the anthraquinone nucleus via an --NH-- bond, and each B is a peptide group or a physiologically acceptable derivative thereof. The compounds are useful as antitumor compounds.
一种具有结构式##STR1##的化合物,其中R.sup.1和R.sup.2独立地为氢或羟基。R.sup.2和R.sup.3独立地为氧代或氢,R.sup.5和R.sup.6中的一个为A-B,另一个为氢,羟基或A基团,其中每个A为间隔基团,在与B(如果存在)的键中提供--NH--或--CO--;至少一个A基团不提供与
蒽醌核相邻的
α-氨基酸残基,任何A-B基团中的A通过--NH--键连接到
蒽醌核,并且每个B为肽基团或其生理上可接受的衍
生物。这些化合物可用作抗肿瘤化合物。