[EN] ANTIBACTERIAL PIPERIDINE DERIVATIVES<br/>[FR] COMPOSÉS ANTIBACTÉRIENS DÉRIVÉS DE PIPÉRIDINE
申请人:ASTRAZENECA AB
公开号:WO2006087543A1
公开(公告)日:2006-08-24
(EN) Compounds of formula (I) and their pharmaceutically acceptable salts are described: Formula (I). Processes for their preparation, pharmaceutical compositions containing them, their use as medicaments and their use in the treatment of bacterial infections are also described.(FR) La présente invention décrit des composés de formule (I) ainsi que leurs sels de qualité pharmaceutique : Formule (I). La présente invention décrit en outre des procédés de synthèse desdits composés, des préparations pharmaceutiques les contenant, leur emploi en tant que médicaments et leur emploi dans le traitement d'infections bactériennes.
simultaneously inhibit multiple bacterial targets are more likely to suppress the evolution of target-based resistance than monotargeting compounds. The structurally similar ATP binding sites of DNAgyrase and topoisomerase Ⅳ offer an opportunity to accomplish this goal. Here we present the design and structure-activity relationship analysis of balanced, low nanomolar inhibitors of bacterialDNAgyrase and topoisomerase
bacterial strains. The most potent compound displayed an IC50 of 47 nm against E. coli DNA gyrase, and a minimum inhibitory concentration (MIC) of 12.5 μm against the Gram‐positive Enterococcus faecalis. Some compounds displayed good antibacterial activities against an efflux‐pump‐deficient E. coli strain (MIC=6.25 μm) and against wild‐type E. coli in the presence of efflux pump inhibitor PAβN (MIC=3.13 μm)
facilitating entry of nonpermeating GyrB inhibitors into bacteria by conjugation with ciprofloxacin, a highly permeable GyrA inhibitor. A hybrid molecule containing GyrA and GyrB inhibitor parts entering the bacterial cell would then elicit a strong antibacterial effect by inhibition of both the GyrA and GyrB subunits of DNA gyrase and potentially slowbacterial resistance development.
85 nM against E. coli DNA gyrase displays the most potent antibacterialactivity, with MIC values of 1.56 μM against Enterococcus faecalis, and 3.13 μM against wild type S. aureus, methicillin-resistant S. aureus (MRSA) and vancomycin-resistant Enterococcus (VRE). The activity against wild type E. coli in the presence of efflux pump inhibitor phenylalanine-arginine β-naphthylamide (PAβN) is 4.6 μM.
位于 DNA 促旋酶 B 亚基上的 ATP 结合位点是开发新抗菌剂的一个有吸引力的目标。近几十年来,已经发现了几种小分子抑制剂类别,但迄今为止还没有一种进入市场。我们在此展示了对来自大肠杆菌和金黄色葡萄球菌的拓扑异构酶 IV具有低纳摩尔 IC 50值和亚微摩尔 IC 50值的有前景的新系列N-苯基吡咯酰胺的发现。该系列中最有效的化合物对大肠杆菌的 IC 50值为 13 nM回旋。对革兰氏阳性菌的最低抑菌浓度 (MIC) 在低微摩尔范围内。恶二唑酮衍生物11a对大肠杆菌DNA 促旋酶的 IC 50值为 85 nM,显示出最有效的抗菌活性,对粪肠球菌的 MIC 值为 1.56 μM ,对野生型金黄色葡萄球菌、耐甲氧西林S.的 MIC 值为 3.13 μM . 金黄色葡萄球菌(MRSA) 和耐万古霉素肠球菌(VRE)。在外排泵抑制剂苯丙氨酸-精氨酸 β-萘酰胺 (PAβN) 存在下,对野生型大肠杆菌的活性为