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New octahydroquinazoline derivatives: Synthesis and hypotensive activity
Faculty
Pharmacy
Year:
2010
Type of Publication:
Article
Pages:
5390-5396
Authors:
El-Sabbagh, O. I, Shabaan, Mohamed A, Kadry, Hanan H, Al-Din, Ehab Saad
DOI:
10.1016/j.ejmech.2010.08.064
Journal:
EUROPEAN JOURNAL OF MEDICINAL CHEMISTRY ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER
Volume:
45
Research Area:
Pharmacology \& Pharmacy
ISSN
ISI:000283911300084
Keywords :
Synthesis, Octahydroquinazoline derivatives, Hypotensive activity
Abstract:
Several novel 1-(4-chlorophenyl)-7,7-dimethyl-1,2,3,4,5,6,7,8-octahydro-5-oxo-3-(subst itutedphenyl) quinazoline derivatives (2-21) structurally similar to prazosin, were prepared using Mannich reaction of 3-(4-chlorophenylamino)-5,5-dimethyl-2-cyclohexenone (1) with different aromatic amines in the presence of formaline. The structures of the quinazoline derivatives were established using elemental and spectral analyses. Compounds 18, 20 and 21 were found to possess a high hypotensive effect through their expected alpha(1)-blocking activity like the clinically used drug prazosin but with advantageous of being did not cause reflex tachycardia and having prolonged duration of action when tested in adrenaline-induced hypertension in anaesthetized rats. (C) 2010 Elsevier Masson SAS. All rights reserved.
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