申请人:Syntarga B.V.
公开号:US07223837B2
公开(公告)日:2007-05-29
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)k—(X)l—A is an elongated self-elimination spacer system; 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 cyclization elimination spacer; Z is a therapeutic drug; k, l and m are integers from 0 (included) to 5 (included); n is an integer of 0 (included) to 10 (included), with the provisos that: —when A is (Y)m: k+l+m≧1, and if k+l+m=1; —when A is U: k+l≧1.
本发明涉及一种可以在首选作用位点激活的前药,以有选择地将相应的治疗原药物传递到靶细胞或目标位点。因此,本发明主要但不仅限于与肿瘤细胞作为靶细胞有关。更具体地说,该前药是化合物V - (W)k - (X)l - A - Z的形式,其中:V是一个说明符;(W)k - (X)l - A是一个延长的自我消除间隔系统;W和X分别是1,(4+2n)电子级联间隔器,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)电子级联间隔器,或者是公式U的群体,是一个环化消除间隔器;Z是治疗药物;k,l和m是从0(包括)到5(包括)的整数;n是从0(包括)到10(包括)的整数,但需要注意的是:-当A是(Y)m时:k+l+m≥1,如果k+l+m=1;-当A是U时:k+l≥1。