Design, Synthesis, and Biological Activity of Hybrid Compounds between Uramustine and DNA Minor Groove Binder Distamycin A
作者:Pier Giovanni Baraldi、Romeo Romagnoli、Antonio Entrena Guadix、Maria Josè Pineda de las Infantas、Miguel Angel Gallo、Antonio Espinosa、Alberto Martinez、John P. Bingham、John A. Hartley
DOI:10.1021/jm011113b
日期:2002.8.1
The design, synthesis, characterization, DNA binding properties, and cytotoxic activity of a novel series of hybrids, namely, a molecular combination of the natural antibiotic distamycin A and the antineoplastic agent uramustine, are reported, and the structure-activity relationships are discussed. This homologous series 29-34 consisted of the minor groove binder distamycin A joined to uramustine (uracil
报道了一系列新型杂种的设计,合成,表征,DNA结合特性和细胞毒活性,这些杂种即天然抗生素双霉素A和抗肿瘤剂尿嘧啶的分子组合,并讨论了其构效关系。此同源序列29-34由小沟粘合剂二硫霉素A通过适当的脂族羧酸部分与尿嘧啶(尿嘧啶芥子)连接而成,该脂族羧酸部分含有可变长度的柔性多亚甲基链[(CH(2))(n)(),其中n = 1-6)。与用于缀合的地他霉素A和尿嘧啶衍生物22-27相比,该系列中的所有杂合化合物均具有增强的活性,在人类白血病K562细胞暴露1 h后,IC(50)值在7.26-0.07 microM范围内。当n = 6时显示最大活动。尿嘧啶和双霉素的构架之间的距离对于细胞毒性至关重要,其中具有4至6个接头长度的化合物比具有1至3个接头长度的细胞毒性至少高20倍。Taq聚合酶终止实验证明,尿嘧啶-地霉素的杂合子与富含A / T的DNA序列具有选择性共价结合,这对于具有较长接头长度的化