Pharmacological screening of some newly synthesized triazoles for H1 receptor antagonist activity
The present work deals with the pharmacological screening of some newly synthesized triazoles. A series of 1,2,4-triazoles have been synthesized using benzoic acid or 4-chloro benzoic acid as the starting materials. The synthesized compounds were characterized by physical and spectral analysis viz., Fourier transform infrared spectroscopy, 1H nuclear magnetic resonance, 13C nuclear magnetic resonance, Gas Chromatography-Mass Spectrometry and elemental analysis Carbon, Hydrogen and Nitrogen analysis in order to confirm the structure. Acute toxicity studies were carried out in accordance with the Organization for Economic Co-operation and Development guideline 425. The compounds were not found to be lethal even at a dose level of 2000 mg/kg. Pharmacological evaluation was done following three intact animal experiments and one experiment on the isolated tissue. Results of the study indicated that the compound 7bi and 7bj protected up to 60% against histamine-induced dyspnea. Antihistaminic nature of the test compounds 7bi, 7bj, 7ai, and 7bk were also confirmed by the loss of catalepsy after the administration of clonidine (1%, s.c.). During experiments on isolated tissue, suppression of dose-response curve of histamine indicates a noteworthy denouement in favor of the said effect.
KeywordsTriazoles Amines Antihistaminic H1 antagonist
The authors are thankful to the GLA University administration for providing research facilities for the present work. The authors wish to thank SAIF-CIL Panjab University, Chandigarh for spectral studies.
Compliance with ethical standards
Conflict of interest
The authors declare that they have no competing interests.
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