The synthesis of five novel homodimers is reported based on the anilinoisoquinolinequinone scaffold. In these twin-drug derivatives, two units of the anilinoquinone pharmacophores are linked through a methylene spacer. The formation of dimers was achieved by reaction of isoquinolinequinones with 4, 4’-diaminodiphenylmethane via a sequence of two oxidative amination reactions. A preliminary in vitro screening of the homodimers reveals moderate to high cytotoxic activities against MDA-MB-21 breast adenocarcinoma and B16-F10 murine metastatic melanoma cell lines. The asymmetrical homodimer 15 stands out due to its cytotoxic potencies at submicromolar concentrations and high selectivity index (mean IC50 = 0.37 μM; SI = 6.97) compared to those of etoposide (mean IC50 = 3.67; SI = 0.32) and taxol (mean IC50 = 0.35; SI = 0.91) employed as reference anticancer drugs.
报告基于
苯胺基
异喹啉醌支架合成了五种新型同二聚体。在这些孪生药物衍
生物中,
苯胺基
喹啉醌药基的两个单元通过亚甲基间隔相连。
异喹啉醌与
4,4'-二氨基二苯甲烷通过一连串的两个氧化胺化反应形成了二聚体。同二聚体的初步体外筛选显示,它们对
MDA-MB-21 乳腺癌和 B16-F10 小鼠转移性
黑色素瘤
细胞系具有中等到较高的细胞毒性活性。不对称同源二聚体 15 脱颖而出,因为它在亚摩尔浓度下具有很强的细胞毒性,而且与作为参考抗癌药物的
依托泊苷(平均 IC50 = 3.67;SI = 0.32)和
紫杉醇(平均 IC50 = 0.35;SI = 0.91)相比,具有很高的选择性指数(平均 IC50 = 0.37 μM;SI = 6.97)。