title: Synthesis, structure and antibacterial activity of novel 1-(5-substituted-3-substituted-4,5-dihydropyrazol-1-yl)ethanone oxime ester derivatives.
abstract: A series of novel 1-(5-substituted-3-substituted-4,5-dihydropyrazol-1-yl)ethanone oxime ester derivatives are synthesized. The results show that compounds 14 and 26c can strongly inhibit Staphylococcus aureus DNA gyrase and Escherichia coli DNA gyrase (with IC(50) of 0.25 and 0.125 microg/mL against S. aureus DNA gyrase, 0.125 and 0.25 microg/mL against E. coli DNA gyrase). On the basis of the biological results, structure-activity relationships are also discussed.
authors.affiliation: Key Laboratory of Anhui Educational Department, Anhui University of Technology, Maanshan 243002, PR China.
authors.forename: Xin-Hua
authors.initials: XH
authors.lastname: Liu
authors.forename: Pin
authors.initials: P
authors.lastname: Cui
authors.forename: Bao-An
authors.initials: BA
authors.lastname: Song
authors.forename: Pinaki S
authors.initials: PS
authors.lastname: Bhadury
authors.forename: Hai-Liang
authors.initials: HL
authors.lastname: Zhu
authors.forename: Shi-Fan
authors.initials: SF
authors.lastname: Wang
mesh_terms: D000900:Anti-Bacterial Agents / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology*; D018360:Crystallography, X-Ray; D027081:DNA Gyrase / Q000378:metabolism; D004791:Enzyme Inhibitors / Q000138:chemical synthesis / Q000737:chemistry / Q000494:pharmacology; D004926:Escherichia coli / Q000187:drug effects / Q000201:enzymology; D004952:Esters / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology*; D004980:Ethane / Q000737:chemistry*; D006859:Hydrogen / Q000737:chemistry*; D008958:Models, Molecular; D015394:Molecular Structure; D010091:Oximes / Q000737:chemistry*; D011720:Pyrazoles / Q000737:chemistry*; D013211:Staphylococcus aureus / Q000187:drug effects / Q000201:enzymology; D013329:Structure-Activity Relationship; D059005:Topoisomerase II Inhibitors
chemical_list: D000900:Anti-Bacterial Agents; D004791:Enzyme Inhibitors; D004952:Esters; D010091:Oximes; D011720:Pyrazoles; D059005:Topoisomerase II Inhibitors; C031280:pyrazole; D006859:Hydrogen; D027081:DNA Gyrase; D004980:Ethane