Synthesis, evaluation, and CoMFA study of fluoroquinophenoxazine derivatives as bacterial topoisomerase IA inhibitors
作者:Xufen Yu、Mingming Zhang、Thirunavukkarasu Annamalai、Priyanka Bansod、Gagandeep Narula、Yuk-Ching Tse-Dinh、Dianqing Sun
DOI:10.1016/j.ejmech.2016.09.053
日期:2017.1
topoisomerase I enzyme target recognition. In this study, a series of fluoroquinophenoxazine analogs was designed, synthesized, and evaluated as topoisomerase I inhibitors and antibacterial agents. Target-based assays revealed that the fluoroquinophenoxazine derivatives with 9-NH2 and/or 6-substituted amine functionalities generally exhibited good to excellent inhibitory activities against topoisomerase I with
迫切需要具有新颖靶标和作用机理的新型抗菌剂,以解决有问题的细菌感染和增加抗生素耐药性。拓扑异构酶IA代表了一个有吸引力的且尚未开发的抗菌靶标,因此,人们越来越有兴趣开发用于抗菌治疗的选择性和有效的拓扑异构酶I抑制剂。根据我们的初步生物学筛选,发现氟喹啉吩恶嗪1是一种针对大肠杆菌的低微摩尔抑制剂。拓扑异构酶IA。在文献中,已经研究了氟喹啉吩恶嗪类似物作为抗菌剂和抗癌剂,但是,它们对拓扑异构酶I的抑制作用尚未得到充分开发,并且几乎没有可用的结构活性关系(SAR)。良好的1对拓扑异构酶I抑制活性和SAR的缺乏促使我们设计和合成了一系列氟喹吩恶嗪类似物,以系统地评估SAR,并探查了氟喹吩恶嗪核心对拓扑异构酶I酶靶识别的结构元素。在这项研究中,设计,合成和评估了一系列氟喹啉吩恶嗪类似物,作为拓扑异构酶I抑制剂和抗菌剂。基于靶标的测定表明,氟喹啉恶嗪衍生物具有9-NH2和/或6-取代的胺官能团通常表现