Compounds of general formula I or a pharmaceutically acceptable salts, derivatives or prodrugs thereof are of use in treatment of cancer;
wherein R
1
and R
2
are independently selected from the group consisting of hydrogen, substituted or unsubstituted C
1
-C
12
alkyl, substituted or unsubstituted C
2
-C
12
alkenyl, substituted or unsubstituted C
2
-C
12
alkynyl, C
2
-C
12
alkenylidene, substituted or unsubstituted C
3
-C
12
alkynylidene and substituted or unsubstituted C
2
-C
12
acyl.
通式I或其药学上可接受的盐、衍
生物或前药在癌症治疗中有用;其中R1和R2分别选自
氢、取代或未取代的C1-C12烷基、取代或未取代的C2-C12
烯基、取代或未取代的C2-C12炔基、C2-C12
烯基亚
甲基、取代或未取代的C3-C12炔基亚
甲基和取代或未取代的C2-C12酰。