Synthesis and structure–antibacterial activity relationship studies of 4-substituted phenyl-4,5-dihydrobenzo[f][1,4]oxazepin-3(2H)-thiones
摘要:
The synthesis and characterization of a series of 4-substituted phenyl-4,5-dihydrobenzo[f][1,4]oxazepin-3(2H)-thiones were presented. Preliminary in vitro antimicrobial activity of the compounds was assessed against a panel of microorganisms including S. aureus, E. faecalis, P. aeruginosa, E. coli, and C. albicans. Some of the compounds exhibited significantly in vitro antimicrobial activity. The pMIC values were correlated with physicochemical descriptors: Hammett substituent constants (sigma (m) and sigma (p) ) and the lipophilic constant (pi). One statistical significant 2D-QSAR model was obtained with para-substituted compounds. The pMIC values were also correlated with some theoretical descriptors as independent variables and four statistical significant 2D-QSAR models were also obtained with meta-substituted compounds.
Synthesis and structure–antibacterial activity relationship studies of 4-substituted phenyl-4,5-dihydrobenzo[f][1,4]oxazepin-3(2H)-thiones
摘要:
The synthesis and characterization of a series of 4-substituted phenyl-4,5-dihydrobenzo[f][1,4]oxazepin-3(2H)-thiones were presented. Preliminary in vitro antimicrobial activity of the compounds was assessed against a panel of microorganisms including S. aureus, E. faecalis, P. aeruginosa, E. coli, and C. albicans. Some of the compounds exhibited significantly in vitro antimicrobial activity. The pMIC values were correlated with physicochemical descriptors: Hammett substituent constants (sigma (m) and sigma (p) ) and the lipophilic constant (pi). One statistical significant 2D-QSAR model was obtained with para-substituted compounds. The pMIC values were also correlated with some theoretical descriptors as independent variables and four statistical significant 2D-QSAR models were also obtained with meta-substituted compounds.
Oxidative Dehydrogenation of Cu(II) Complexes with N-Aryl-N-2-hydroxybenzyl- and N-Aryl-N-2-hydroxynaphthylmethyleneamine Derivatives
作者:V. G. Usatyuk、A. A. Medzhidov、A. Aydin、B. Yalchin、R. A. Manafova
DOI:10.1023/b:ruco.0000040725.54156.bb
日期:2004.9
The reactions of Cu2+ Cu2+, and Ni2+ ions with N-phenyl-N-2-hydroxybenzyl- and N-phenyl-N-2-hydroxynaphthylmethyleneamine derivatives (HLn, n = 1-8) produced from the derivatives of aniline and aromatic o-hydroxyaldehydes are studied. Among the ions studied, only Cu2+ forms stable complexes Cu(L-n)2 . 2H(2)O. The structures of the synthesized compounds are studied by IR, UV, and EPR spectroscopies and differential thermal analysis. The magnetic moments of the Cu(L-n)(2) . 2H(2)O complexes are very small and range within 0.43-1.19 mu(B), depending on the ligand structure, which indicates a strong antiferromagnetic interaction between the Cu2+ ions. The temperature dependence of the magnetic susceptibility measured for the Cu(L-3)(2) . 2H(2)O complex (where HL3 is N-4-methoxyphenyl-N-2-hydroxybenzylamine) is closest to the theoretical curve calculated for the binuclear Cu(II) complexes connected by the intermolecular exchange interaction. The Cu(II) complexes with HLn are shown to undergo oxidative dehydrogenation to form the corresponding metal salicylaldiminates. This reaction can occur on heating in the absence of oxygen and is accompanied by the Cu2+ --> Cu+ transition.
Synthesis and structure–antibacterial activity relationship studies of 4-substituted phenyl-4,5-dihydrobenzo[f][1,4]oxazepin-3(2H)-thiones
作者:Hikmet Agirbas、Berat Kemal、Fatma Budak
DOI:10.1007/s00044-010-9457-4
日期:2011.11
The synthesis and characterization of a series of 4-substituted phenyl-4,5-dihydrobenzo[f][1,4]oxazepin-3(2H)-thiones were presented. Preliminary in vitro antimicrobial activity of the compounds was assessed against a panel of microorganisms including S. aureus, E. faecalis, P. aeruginosa, E. coli, and C. albicans. Some of the compounds exhibited significantly in vitro antimicrobial activity. The pMIC values were correlated with physicochemical descriptors: Hammett substituent constants (sigma (m) and sigma (p) ) and the lipophilic constant (pi). One statistical significant 2D-QSAR model was obtained with para-substituted compounds. The pMIC values were also correlated with some theoretical descriptors as independent variables and four statistical significant 2D-QSAR models were also obtained with meta-substituted compounds.