7-Hydroxylucanthone and 7-hydroxyhycanthone derivatives have been found to have significant antitumor effect. The derivatives are of the general formula: ##STR1## wherein the radicals R.sup.1 and R.sup.2 are lower alkyl groups or other simple groups and R.sup.3 is OH where X.dbd.O, and H or OH where X.dbd.S.
7-羟基卢甘通和7-羟基海卡通衍
生物已被发现具有显著的抗肿瘤效果。这些衍
生物的一般公式为:##STR1## 其中基团R1和R2是较低的烷基或其他简单的基团,基团R3是OH,其中X=O,且H或OH,其中X=S。