申请人:De Groot, Franciscus Marinus Hendrikus
公开号:EP1243276A1
公开(公告)日:2002-09-25
This invention is directed to prodrugs that can be activated at the preferred site of action in order to selectively deliver the corresponding therapeutic parent drugs to target cells or to the target site. This invention will therefore primarily but not exclusively relate to tumor cells as target cells. More specifically the prodrugs are compounds of the formula V-(W)k-(X)l-A-Z, wherein:
V is a specifier; W and X are each a 1, (4+2n) electronic cascade spacer, being the same or different;
A is either a spacer group of formula (Y)m, wherein:
Y is a 1, (4+2n) electronic cascade spacer, or a group of formula
U being a cyclisation elimination spacer;
Z is a therapeutic drug;
k, l and m are integers from 0 to 5;
n is an integer of 0 to 10,
with the provisos that:
when A is (Y)m: k+l+m > 1, and if k+l+m=1, then n > 1;
when A is U: k+l > 1.
本发明涉及一种前药,可以在首选作用部位被激活,以有选择性地将相应的治疗母药物送达目标细胞或目标部位。因此,本发明主要但不仅限于与肿瘤细胞作为靶细胞相关。更具体地说,所述前药是化合物V-(W)k-(X)l-A-Z,其中:V是一个指示符;W和X分别是1,(4+2n)电子级联间隔物,可以相同也可以不同;A是公式(Y)m的间隔基,其中:Y是1,(4+2n)电子级联间隔物,或者是公式U的基团,是一个环化消除间隔物;Z是治疗药物;k、l和m是0至5的整数;n是0至10的整数,但是必须满足以下条件:当A是(Y)m时:k+l+m>1,如果k+l+m=1,则n>1;当A是U时:k+l>1。