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Synthesis of Novel Ciprofloxacin-Based Hybrid Molecules toward Potent Antimalarial Activity.
ACS Medicinal Chemistry Letters ( IF 3.5 ) Pub Date : 2020-06-04 , DOI: 10.1021/acsmedchemlett.0c00196
Srikanta Dana 1, 2 , Praveesh Valissery 2 , Sharvan Kumar 1 , Sumiran Kumar Gurung 2 , Neelima Mondal 2 , Suman Kumar Dhar 2 , Pritam Mukhopadhyay 1
Affiliation  

Antimalarial drug resistance is a serious obstacle in the persistent quest to eradicate malaria. There is a need for potent chemical agents that are able to act on drug-resistant Plasmodium falciparum populations at reasonable concentrations without any related toxicity to the host. By rational drug design, we envisaged to address this issue by generating a novel hybrid drug possessing two pharmacophores that can act on two unique and independent targets within the cell. We synthesized a new class of ciprofloxacin-based hybrid molecules, which have been integrated with acridine, quinolone, sulphonamide, and cinnamoyl pharmacophores (14). We realized a potent chloroquinolone-ciprofloxacin-based antimalarial hybrid (2, CQ-CFX) whose mechanism of action is unlike that of its parent molecules indicating a unique biological target. CQ-CFX is not only potent against CQ-resistant and susceptible strains of Plasmodium falciparum at low nanomolar concentrations (IC50 values are 63.17 ± 1.2 nM and 25.52 ± 4.45 nM, respectively) but is also not toxic to mammalian and bacterial systems up to 20 μM and 1 μM, respectively.

中文翻译:

新型基于环丙沙星的杂化分子对有效的抗疟疾活性的合成。

抗疟疾药物耐药性是持续寻求根除疟疾的严重障碍。需要有效的化学试剂,其能够以合理的浓度对耐药性恶性疟原虫群体起作用,而对宿主没有任何相关的毒性。通过合理的药物设计,我们设想通过产生一种具有两种药效基团的新型杂交药物来解决这个问题,该药效基团可以作用于细胞内的两个独特且独立的靶标上。我们合成了一类新的基于环丙沙星杂合分子,其已集成了吖啶,喹诺酮,磺酰胺,和肉桂药效(的1 - 4)。我们发现了一种有效的基于氯喹诺酮-环丙沙星的抗疟杂种(2(CQ-CFX),其作用机理与其母体分子的作用机理不同,表明其具有独特的生物学靶标。CQ-CFX不仅对低纳摩尔浓度(IC 50值分别为63.17±1.2 nM和25.52±4.45 nM)的恶性疟原虫的CQ抗药性和易感菌株有效,而且对直至哺乳动物和细菌的系统无毒分别为20μM和1μM。
更新日期:2020-07-09
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