A compound of the formula ##STR1## wherein: R.sub.1 and R.sub.2 are defined as follows: R.sub.1 is hydrogen, an alkyl group, or an alkyl group having one or more hydroxy groups; R.sub.2 is an alkyl group having one or more hydroxy groups, or an alkyl group containing an amino group in which the amino function is substituted with hydrogen or one or two individual alkyl groups same or different, or two alkyl groups which together form a cyclic amine, e.g. piperidine; R.sub.3 is hydrogen or an alkyl group; and R.sub.4 is hydrogen or an alkyl group. The compounds have high radiosensitizing activity and selectivity for hypoxic cells.
该化合物的
化学式为##STR1##其中:R.sub.1和R.sub.2的定义如下:R.sub.1是氢,烷基或具有一个或多个羟基的烷基;R.sub.2是具有一个或多个羟基的烷基或含有
氨基的烷基,其中
氨基功能被氢或一个或两个相同或不同的烷基取代,或两个烷基共同形成环状胺,例如
哌啶;R.sub.3是氢或烷基;R.sub.4是氢或烷基。该化合物具有高放射增敏活性和对缺氧细胞的选择性。