کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1379721 | 982037 | 2005 | 5 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Quaternary salts of 4,3′ and 4,4′ bis-pyridinium monooximes: Synthesis and biological activity Quaternary salts of 4,3′ and 4,4′ bis-pyridinium monooximes: Synthesis and biological activity](/preview/png/1379721.png)
Six unsymmetrical bis-quaternary monooximes viz. dibromides of 1-(4-hydroxyiminomethyl pyridinium)-3-(3/4-carbamoyl pyridinium)propane, 1-(4-hydroxyiminomethyl pyridinium)-4-(3/4-carbamoyl pyridinium) butane, 1-(4-hydroxyiminomethyl pyridinium)-5-(3/4-carbamoyl pyridinium)pentane were synthesized and characterized by spectral data. Their ability to reactivate tetraethyl pyrophosphate inhibited mouse total brain cholinesterase was investigated and compared with 2-pyridine aldoxime chloride (2-PAM). All the compounds were found to be more effective acetylcholinesterase reactivators when compared with the conventional oxime, 2-PAM, except the compound (5a) with pentylene bridge and carbamoyl group present at fourth position. The bis-pyridinium monooximes with 3-carbamoyl group were more potent reactivators than the corresponding 4-carbamoyl compounds and bis-oximes tested.
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Journal: Bioorganic & Medicinal Chemistry Letters - Volume 15, Issue 12, 15 June 2005, Pages 3076–3080