C8-Linked Pyrrolobenzodiazepine Monomers with Inverted Building Blocks Show Selective Activity against Multidrug Resistant Gram-Positive Bacteria
作者:Paolo Andriollo、Charlotte K. Hind、Pietro Picconi、Kazi S. Nahar、Shirin Jamshidi、Amrit Varsha、Melanie Clifford、J. Mark Sutton、Khondaker Miraz Rahman
DOI:10.1021/acsinfecdis.7b00130
日期:2018.2.9
block orientations on antibacterial activity and obtain structure activity relationship (SAR) information, four novel structures were synthesized in which the building blocks of previously reported compounds were inverted, and their antibacterial activity was studied. The compounds showed minimum inhibitory concentrations (MICs) in the range of 0.125–32 μg/mL against MDR Gram-positive strains with a bactericidal
抗菌素耐药性已成为全球关注的主要问题。开发用于治疗由多药耐药性(MDR)病原体引起的感染的新型抗菌剂是当务之急。吡咯并苯二氮卓类(PBD)是一类有前途的抗菌剂,最初是从自然资源中发现和分离的。最近,C8连接的PBD联芳基共轭物已被证明对某些MDR革兰氏阳性菌株具有活性。为了探索结构单元取向对抗菌活性的作用并获得结构活性关系(SAR)信息,合成了四个新颖的结构,其中先前报道的化合物的结构单元被颠倒了,并研究了它们的抗菌活性。化合物的最低抑菌浓度(MIC)在0范围内。125-32μg/ mL,具有杀菌作用的MDR革兰氏阳性菌株。结果表明,酰胺键的一次反转降低了活性,而两次反转恢复了针对MDR病原体的活性。所有倒置的化合物都不能稳定DNA,并且缺乏真核毒性。这些化合物抑制DNA旋转酶在体外,在生化分析中,最有效的化合物对野生型和突变型DNA促旋酶均具有同等活性。所观察到的该化合物对具有等价回