Discovery of 1-benzoyl-3-cyanopyrrolo[1,2-a]quinolines as a new series of apoptosis inducers using a cell- and caspase-based high-throughput screening assay. Part 1: Structure–activity relationships of the 1- and 3-positions
作者:William Kemnitzer、Jared Kuemmerle、Songchun Jiang、Han-Zhong Zhang、Nilantha Sirisoma、Shailaja Kasibhatla、Candace Crogan-Grundy、Ben Tseng、John Drewe、Sui Xiong Cai
DOI:10.1016/j.bmcl.2008.09.110
日期:2008.12
substitution at the 4-position of the 1-benzoyl group was important for activity. Replacing the 3-cyano group by an ester or ketone group led to inactive compounds. Interestingly, 4-substituted analogs such as 1-(4-(1H-imidazol-1-yl)benzoyl)-3-cyanopyrrolo[1,2-a]quinoline (2k) were found to be broadly and highly active in the caspase activation assay as well as in the cell growth inhibition assay with low nM
通过我们基于胱天蛋白酶和基于细胞的高通量筛选分析,确定了1-Benzoyl-3-cyanopyrrolo [1,2-a]喹啉(2a)是一种新型的凋亡诱导剂。化合物2a对几种乳腺癌细胞系具有良好的活性,但对几种其他癌细胞系的活性则低得多。2a的SAR研究发现,在1-苯甲酰基的4位取代对活性很重要。用酯或酮基取代3-氰基会导致不活泼的化合物。有趣的是,发现4-取代的类似物,例如1-(4-(1H-咪唑-1-基)苯甲酰基)-3-氰基吡咯并[1,2-a]喹啉(2k)在胱天蛋白酶中具有广泛的活性在人乳腺癌细胞T47D,人结肠癌细胞HCT116,和肝癌细胞SNU398。发现化合物2a在最高50 microM时不抑制微管蛋白聚合,而在化合物2k中抑制IC(50)值为5 microM的微管蛋白聚合,表明在1-苯甲酰基的4位上的某些取代基可以改变作用机理。