An antitumor agent comprising a thiadiazoline derivative represented by the general formula (I), or a pharmacologically acceptable salt thereof as an active ingredient:
(wherein Z represents a sulfur atom and the like, R
1
represents substituted or unsubstituted lower alkynyl and the like, R
2
represents a hydrogen atom and the like, R
3
represents substituted or unsubstituted lower alkyl and the like, and R
4
represents substituted or unsubstituted aryl and the like), and the like are provided.
一种抗肿瘤剂,包括由通式(I)表示的
噻二唑衍
生物或其药学上可接受的盐作为活性成分:(其中Z代表
硫原子等,R1代表取代或未取代的较低炔基等,R2代表氢原子等,R3代表取代或未取代的较低烷基等,R4代表取代或未取代的芳基等)等。