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Synthesis, structure-activity relationships and biological evaluation of 7-phenyl-pyrroloquinolinone 3-amide derivatives as potent antimitotic agents

机译：强力抗有丝分裂剂7-苯基-吡咯并喹啉酮3-酰胺衍生物的合成，构效关系及生物学评价

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A small library of 7-pyrrolo[3,2-f]quinolinones was obtained by introducing benzoyl, sulfonyl and carbamoyl side chains at the 3-N position, and their cytotoxicity against a panel of leukemic and solid tumor cell lines was evaluated. Most of them showed high antiproliferative activity with GI50s ranging from micro-to sub-nanomolar values, and these values correlated well with the inhibitory activities of the compounds against tubulin polymerization. Based on a recently proposed colchicine bind site inhibitors (CBSIs) pharmacophore, the interactions of the novel 7-PPyQs at the colchicine domain were rationalized. The most active compounds (4a and 4b) did not induce significant cell death in normal human lymphocytes, suggesting that the compounds may be selective against cancer cells. In particular, 4a was a potent inducer of apoptosis in both the HeLa and Jurkat cell lines. On the other hand, the sulfonyl derivative 4b exhibited a lower potency in comparison with 4a. With both compounds, induction of apoptosis was associated with dissipation of the mitochondrial transmembrane potential and production of reactive oxygen species, suggesting that cells treated with the compounds followed the intrinsic pathway of apoptosis. © 2016 Elsevier Masson SAS
机译：通过在3-N位置引入苯甲酰基，磺酰基和氨基甲酰基侧链获得7-吡咯并[3,2-f]喹啉酮的小文库，并评估其对一组白血病和实体瘤细胞系的细胞毒性。它们中的大多数显示出高的抗增殖活性，GI50的范围从微纳摩尔到亚纳摩尔值，这些值与化合物对微管蛋白聚合的抑制活性非常相关。基于最近提出的秋水仙碱结合位点抑制剂（CBSI）药效团，在秋水仙碱域中新型7-PPyQ的相互作用被合理化。活性最高的化合物（4a和4b）在正常人淋巴细胞中不会诱导明显的细胞死亡，这表明这些化合物可能对癌细胞具有选择性。特别地，4a在HeLa和Jurkat细胞系中都是有效的凋亡诱导剂。另一方面，与4a相比，磺酰基衍生物4b显示出较低的效力。对于这两种化合物，细胞凋亡的诱导与线粒体跨膜电位的耗散和活性氧的产生有关，这表明用这些化合物处理的细胞遵循细胞凋亡的内在途径。 ©2016 Elsevier Masson SAS

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