Compounds which are useful in anti-tumors therapy having the formula (I) ##STR1## wherein Het imidazole, A represents a direct linkage at the phenyl 4-position: R is hydrogen; one of R.sub.3 and R.sub.4 is C.sub.1 -C.sub.3 alkyl unsubstituted or omega substituted by C.sub.1 -C.sub.3 alkoxy, and the other, independently, is: a) C.sub.1 -C.sub.3 alkyl unsubstituted or omega substituted by C.sub.1 -C.sub.3 alkoxy; or b) --(CH.sub.2).sub.m --O--(CH.sub.2).sub.n --NR.sub.a R.sub.b wherein each of m and n, which may be the same or different is an integer of 1 to 3, each of R.sub.a and R.sub.b, which may be the same or different, is hydrogen or C.sub.1 -C.sub.3 alkyl; R.sub.5 is hydrogen or C.sub.1 -C.sub.6 alkyl unsubstituted or substituted by a morpholino; each of R.sub.1 and R.sub.2 is independently a group --OR' wherein R' is C.sub.1 -C.sub.6 alkyl; or a pharmaceutically acceptable salt thereof.
具有以下式子(I)的化合物在抗肿瘤治疗中是有用的:##STR1## 其中Het是
咪唑,A代表苯4位的直接连接:R是氢;R.sub.3和R.sub.4中的一个是未取代的C.sub.1-C.sub.3烷基或ω被C.sub.1-C.sub.3烷氧基取代,而另一个独立地是:a)未取代的C.sub.1-C.sub.3烷基或ω被C.sub.1-C.sub.3烷氧基取代; 或b)--(CH.sub.2).sub.m --O--(CH.sub.2).sub.n --NR.sub.a R.sub.b,其中m和n各自是1到3的整数,可以相同也可以不同,R.sub.a和R.sub.b各自可以是氢或C.sub.1-C.sub.3烷基,R.sub.5是未取代或被
吗啡基取代的C.sub.1-C.sub.6烷基;R.sub.1和R.sub.2各自独立地是--OR'基团,其中R'是C.sub.1-C.sub.6烷基;或其药学上可接受的盐。