A series of azolylchroman derivatives were prepared as conformationally constrained analogs of (arylalkyl)azole anticonvulsants. The anticonvulsant activities of the compounds were evaluated by determining seizure latency and protective effect against pentylenetetrazole (PTZ)-induced lethal convulsions in mice at a dose of 5 mg/kg. Among these compounds, 7-chloro-3-(1H-imidazol-1-yl)chroman-4-one and 3-(1H-1.2,4-triazol-1-yl)chroman-4-one exhibited significant action in delaying seizures as well as effective protection against PTZ-induced seizures and deaths. (C) 2006 Elsevier Ltd. All rights reserved.
Conformationally Constrained Analogs of<i>N</i>-Substituted Piperazinylquinolones: Synthesis and Antibacterial Activity of<i>N</i>-(2,3-Dihydro-4-hydroxyimino-4<i>H</i>-1-benzopyran-3-yl)-piperazinylquinolones
作者:Saeed Emami、Alireza Foroumadi、Nasrin Samadi、Mohammad A. Faramarzi、Saeed Rajabalian
DOI:10.1002/ardp.200800182
日期:2009.7
A series of novel quinolone agents bearing a particular bulky and conformationallyconstrained bicyclic substituent (2,3‐dihydro‐4‐hydroxyimino‐4H‐1‐benzopyran‐3‐yl‐ moiety) on the piperazine ring of 7‐piperazinyl quinolones (norfloxacin, enoxacin, ciprofloxacin, and levofloxacin) were synthesized and evaluated against a panel of Gram‐positive and Gram‐negative bacteria. Among these derivatives, ciprofloxacin