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.
这项发明涉及以下化合物的公式:##STR1## 其中 R'.sub.1 =H、OH 或烷基基团,最好是较低的烷基基团,烷基
硫醚或烷氧基,卤素或
氨基,R'.sub.2 =H 或较低的烷基基团。这些化合物具有抗肿瘤和抗病毒性质,可用于治疗癌症。