The invention relates to compounds of formula: ##STR1## wherein R'.sub.1 =H, OH or an alkyl group, preferably a lower alkyl group, alkylthio or alkoxy, an halogen or an amino group, R'.sub.2 =H or a lower alkyl group. These compounds have antitumoral and antiviral properties useful for the treatment of cancers in lower animals.
本发明涉及式为:##STR1## 的化合物,其中R'.sub.1 = H、OH或烷基,优选为低碳烷基、烷
硫基或烷氧基、卤素或
氨基;R'.sub.2 = H或低碳烷基。这些化合物具有抗肿瘤和抗病毒性质,可用于治疗低等动物的癌症。