Synthesis of five and six-membered heterocycles bearing an arylpiperazinylalkyl side chain as orally active antinociceptive agents.

作者: Claudia Vergelli , Giovanna Ciciani , Agostino Cilibrizzi , Letizia Crocetti , Lorenzo Di Cesare Mannelli

DOI: 10.1016/J.BMC.2015.08.043

关键词:

摘要: A number of heterocycles bearing an arylpiperazinylalkyl side chain and structurally related to the previously described lead ET1 (4-amino-6-methyl-2-[3-(4-p-tolylpiperazin-1-yl)propyl]-5-vinylpyridazin-3(2H)-one) was synthesized tested for their antinociceptive activity in Writhing Test. Many compounds, at doses 20-40 mg/kg po were able reduce abdominal constrictions by more than 47% and, same cases, potency is comparable as 5e, 24a, 27b 27c. The analgesia induced active compounds completely prevented pretreatment with α2-antagonist yohimbine, confirming involvement adrenergic system mechanism action these new compounds.

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