Resistance-Modifying Agents. 9. Synthesis and Biological Properties of Benzimidazole Inhibitors of the DNA Repair Enzyme Poly(ADP-ribose) Polymerase
作者:Alex W. White、Robert Almassy、A. Hilary Calvert、Nicola J. Curtin、Roger J. Griffin、Zdenek Hostomsky、Karen Maegley、David R. Newell、Sheila Srinivasan、Bernard T. Golding
DOI:10.1021/jm000950v
日期:2000.11.1
PARP inhibitors. Derivatives of 2-phenyl-1H-benzimidazole-4-carboxamide (23, K(i) = 15 nM), in which the phenyl ring contains substituents, have been synthesized. Many of these derivatives exhibit K(i) values for PARP inhibition < 10 nM, with 2-(4-hydroxymethylphenyl)-1H-benzimidazole-4-carboxamide (78, K(i) = 1.6 nM) being one of the most potent. Insight into structure-activity relationships (SAR)
核酶聚(ADP-核糖)聚合酶(PARP)促进DNA链断裂的修复,并与癌细胞对某些DNA破坏剂的抗性有关。PARP抑制剂作为抗药性改良剂具有临床潜力,能够增强放疗和某些形式的癌症化学疗法的细胞毒性。描述了2-芳基-1H-苯并咪唑-4-羧酰胺在癌症化疗中作为耐药修饰剂的临床前开发。1 H-苯并咪唑-4-羧酰胺,特别是2-芳基衍生物被认为是一类有效的PARP抑制剂。已经合成了其中苯环含有取代基的2-苯基-1H-苯并咪唑-4-羧酰胺的衍生物(23,K(i)= 15 nM)。这些衍生物中的许多衍生物对于PARP抑制作用的K(i)值<10 nM,其中2-(4-羟甲基苯基)-1H-苯并咪唑-4-羧酰胺(78,K(i)= 1.6 nM)是最有效的药物之一。通过研究2-(3-甲氧基苯基)-1H-苯并咪唑-4-羧酰胺之间形成的配合物,增强了对2-芳基-1H-苯并咪唑-4-羧酰胺的结构活性关系(SAR)的认识(44,K(