Synthesis and antidepressant activities of some 3,5-diphenyl-2-pyrazolines
摘要:
Ten new 3,5-diphenyl-2-pyrazoline derivatives were synthesised by reacting 1,3-diphenyl-2-propen-1-one with hydrazine hydrate. The chemical structures of the compounds were proved by means of their IR, H-1-NMR spectroscopic data and microanalyses. The antidepressant activities of these compounds were evaluated by the 'Porsolt Behavioural Despair Test' on Swiss-Webster mice. 3-(4-Methoxyphenyl)-5-(3,4-dimethoxyphenyl)-2-pyrazoline, 3-(4-methoxyphenyl)-5-(2-chloro-3,4-dimethoxyphenyl)-2-pyrazoline and 3-(4-chlorophenyl)-5-(2-chloro-3,4-dimethoxyphenyl)-2-pyrazoline reduced 41.94-48.62% immobility times at 100 mg kg(-1) dose level. In addition, it was found that 4-methoxy and 4-chloro substituents on the phenyl ring at position 3 of the pyrazoline ring increased the antidepressant activity; the replacement of these groups by bromo and methyl substituents decreased activity in mice. (C) 2001 Editions scientifiques et medicales Elsevier SAS.
A facile and regioselective synthesis of polysubstituted pyrroles from α-azido chalcones and 1,3-dicarbonylcompounds is described. Indium trichloride in water is found to be efficient in catalyzing this transformation.
Synthesis and antidepressant activities of some 1,3,5-triphenyl-2-pyrazolines
作者:E Palaska、D Erol、R Demirdamar
DOI:10.1016/s0223-5234(96)80005-5
日期:1996.1
Ten new 1,3,5-triphenyl-2-pyrazoline derivatives were synthesized by reacting 1,3-diphenyl-2-propen-1-one with phenylhydrazine. The chemical structures of the compounds were proved by means of their UV, IR, H-1-NMR spectroscopic data and elementary analyses. The antidepressant activities of these compounds were screened by the Porsolt behavioral despair test. 1-Phenyl-3-(4-methylphenyl)-5-(3,4-dimethoxyphenyl)-2-pyrazoline and 1-phenyl-3-(4-methylphenyl)-5-(2-chloro-3,4-dimethoxyphenyl)-2-prazoline showed significant antidepressant activity compared with clomipramine and tranylcypromine. A methyl substituent on the phenyl ring at position 3 of the pyrazoline ring enhances the antidepressant activity; the replacement of this methyl group by chloro or bromo substituents decreases the activity. In addition, introduction of a chloro substituent to the phenyl at the position 5 decreases the antidepressant activity.