Synthesis of a novel C2-aryl pyrrolo[2,1-c][1,4]benzodiazepine-5,11-dione library: Effect of C2-aryl substitution on cytotoxicity and non-covalent DNA binding
作者:Dyeison Antonow、Terence C. Jenkins、Philip W. Howard、David E. Thurston
DOI:10.1016/j.bmc.2007.01.054
日期:2007.4
A 23-member C2-aryl pyrrolo[2,1-c][1,4]benzodiazepine-5,11-dione (PBD dilactam) library has been synthesized using Suzuki coupling, and the effect of base upon racemisation at the C11a-position during the cross-coupling reaction studied. Three library members (21, 30 and 33) were sufficiently cytotoxic in the NCI's preliminary screen to warrant further evaluation, and one (30, R=p-Br) was found to
使用Suzuki偶联合成了23个成员的C2-芳基吡咯并[2,1-c] [1,4]苯并二氮杂5,11-二酮(PBD双内酰胺)库,并且碱对C11a-处的消旋作用具有影响研究了交叉偶联反应过程中的位置。在NCI的初步筛选中,有3个文库成员(21、30和33)具有足够的细胞毒性,需要进一步评估,而在A498肾癌中,有一个(30,R = p-Br)在亚微摩尔水平具有细胞毒性。细胞系。DNA热变性研究表明,该活性可能与非共价DNA相互作用有关,并且还表明,与未取代的PBD双内酰胺相比,在PBD双内酰胺骨架中引入C2-C3不饱和键和向CBD-内酰胺骨架中添加C2-芳基官能团可显着增强螺旋稳定性。 (6)。