Analogs of biologically active, naturally occurring polyamines, pharmaceutical compositions and methods of treatment
申请人:University of Florida Research Foundation, Inc.
公开号:US06342534B1
公开(公告)日:2002-01-29
Polyamines having the formula:
or a salt thereof with a pharmaceutically acceptable acid wherein:
R1-R6 may be the same or different and are alkyl, aryl, aryl alkyl, cycloalkyl, optionally having an alkyl chain interrupted by at least one etheric oxygen atom, or hydrogen;
N1, N2, N3 and N4 are nitrogen atoms capable of protonation at physiological pH's;
a and b may be the same or different and are integers from 1 to 4;
A, B and C may be the same or different and are bridging groups which effectively maintain the distance between the nitrogen atoms such that the polyamines:
(i) are capable of uptake by a target cell upon administration thereof to a human or non-human animal; and
(ii) upon uptake by the target cell, competitively bind 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;
the polyamines, upon binding to the biological counter-anion in the cell, function in a manner biologically different than the intracellular polyamines, the polyamines not occurring in nature; as well as pharmaceutical compositions embodying the polyamines and methods of treating patients requiring anti-neoplastic therapy.
聚胺具有以下结构式:或其与药学上可接受的酸盐,其中:R1-R6可能相同也可能不同,是烷基、芳基、芳基烷基、环烷基,可以选择性地由至少一个醚氧原子中断的烷基链,或氢;N1、N2、N3和N4是在生理pH下能够质子化的氮原子;a和b可能相同也可能不同,是从1到4的整数;A、B和C可能相同也可能不同,是有效维持氮原子之间距离的桥接基团,使聚胺:(i)在向人类或非人类动物施用后能够被目标细胞吸收;(ii)在被目标细胞吸收后,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的生物对应阴离子竞争结合;聚胺,在细胞中与生物对应阴离子结合后,在生物学上与细胞内聚胺以不同方式发挥作用,这种聚胺在自然界中不存在;以及包含聚胺的药物组合物和治疗需要抗肿瘤治疗的患者的方法。