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International Journal of Pharmacology
Year: 2015  |  Volume: 11  |  Issue: 5  |  Page No.: 423 - 431

Analgesic and Anti-Inflammatory Activities of Some Newly Synthesized 3,5-Bis-[(peptidohydrazinyl) Pyridine Schiff Bases

Suzan Khayyat, Abd El-Galil E. Amr, Osama I. Abd El- Salam, Mohamed A. Al-Omar and Mohamed M. Abdalla    

Abstract: A series of bis-schiff base candidates 5a-l, 6a-c and 7a-c were synthesized by using N2, N2`-(pyridine-3,5-dicarbonyl)-di-L-lucylhydrazide (4) as starting material which was synthesized from 3,5-pyridinedicarboxylic acid (1) and screening for their analgesic and anti-inflammatory. Bis-ester 3 was prepared from 3,5-pyridinedi-carboxylic acid 1 and L-lucine methyl ester, which was hydrazonolysis with hydrazine hydrate afforded compounds 4. Treatment of acid hydrazide 4 with aromatic aldehydes afforded the corresponding bis-dipeptide Schiff bases 5a-l, respectively. Compounds 6a-c and 7a-c were synthesized by reacting of hydrazide 4 with cycloalkanone and acetyl pyridine derivatives. Some of the newly synthesized compounds exhibited better analgesic and anti-inflammatory activities than the reference controls. The structures of newly synthesized compounds were confirmed by IR, NMR, MS spectral data and elemental analysis. The detailed synthesis, spectroscopic data, pharmacological activities of the synthesized compounds was reported.

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