Polyamines having the formula:
or a salt thereof with a pharmaceutically acceptable acid wherein: R1-R5 may be the same or different and are alkyl, aryl, aryl alkyl, cycloalkyl or hydrogen; at least one of R1 and R2 and at least one of R4 and R5 are not hydrogen, and any of the alkyl chains may optionally be interrupted by at least one etheric oxygen atom, excluding N1,N3-diethylspermidine and N1,N3-dipropylspermidine; and
A and B are bridging groups which effectively maintain the distance between the nitrogen atoms such that the polyamine: (i) is capable of uptake by a target cell upon administration of the polyamine to a human or non-human animal; and (ii) upon uptake by the target cell, competitively binds via an electrostatic interaction between the positively charged nitrogen atoms to substantially the same biological counter-anions as the intracellular natural polyamines in the target cell.
聚胺具有以下结构式:或其与药用可接受酸的盐,其中:R1-R5可以相同也可以不同,是烷基、芳基、芳基烷基、环烷基或氢;R1和R2中至少有一个,R4和R5中至少有一个不是氢,烷基链中的任何一个也可以选择性地被至少一个醚氧原子中断,但不包括N1,N3-
二乙基亚精胺和N1,N3-二丙基
亚精胺;A和B是桥连基,有效地保持氮原子之间的距离,使得聚胺:(i)能够在将聚胺给人类或非人类动物时被目标细胞摄取;(ii)被目标细胞摄取后,通过正电荷氮原子之间的静电相互作用与目标细胞内的天然聚胺基本相同地与
生物学对应的阴离子竞争结合。