F Bondavalli, O Bruno, A Ranise, P Schenone, S Russo, A Loffreda, V De Novellis, C Lo Sasso, E Marmo
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3,5-Diphenyl-1H-pyrazole derivatives. II--N-substituted 1-(2-aminoethyl)-3,5-diphenyl-1H-pyrazoles and their 4-bromo derivatives with analgesic and other activities.
The synthesis of N-substituted 1-(2-aminoethyl)-3,5-diphenyl-1H-pyrazoles and their 4-bromo derivatives (V) by reaction of primary and secondary amines with the tosylates of 1-(2-hydroxyethyl)-3,5-diphenyl-1H-pyrazole and its 4-bromo derivative is described. Some of compounds (V) showed a remarkable analgesic activity in mice. Moreover, the above compounds usually exhibited moderate hypotensive, bradycardiac and antiinflammatory activities in rats, infiltration anesthesia in mice, as well as a weak platelet antiaggregating activity in vitro.
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