In an effort to improve the antimicrobial activity of norfloxacin, a series of hybrid norfloxacin–thiazolidinedione molecules were synthesized and screened for their direct antimicrobial activity and their anti-biofilm properties. The new hybrids were intended to have a new binding mode to DNA gyrase, that will allow for a more potent antibacterial effect, and for activity against current quinolone-resistant bacterial strains. Moreover, the thiazolidinedione moiety aimed to include additional anti-pathogenicity by preventing biofilm formation. The resulting compounds showed promising direct activity against Gram-negative strains, and anti-biofilm activity against Gram-positive strains. Docking studies and ADMET were also used in order to explain the biological properties and revealed some potential advantages over the parent molecule norfloxacin.
为了改善诺氟沙星的抗微生物活性,合成了一系列杂合诺氟沙星-噻唑烷二酮分子,并对它们的直接抗微生物活性和抗生物膜特性进行了筛选。新的杂合物旨在具有一种新的与DNA酶酶结合的方式,这将使其具有更强的抗菌效果,并对当前的喹诺酮耐药细菌株产生活性。此外,噻唑烷二酮基团旨在通过阻止生物膜形成来包括额外的抗病原性。结果化合物显示出对革兰氏阴性菌株的有希望的直接活性,以及对革兰氏阳性菌株的抗生物膜活性。对接研究和ADMET也被用来解释生物学特性,并揭示了一些相对于母体分子诺氟沙星的潜在优势。