Arzneimittelforschung 2002; 52(1): 27-33
DOI: 10.1055/s-0031-1299852
Cardiac Drugs · Cardiac Stimulants · Coronary Drugs
Editio Cantor Verlag Aulendorf (Germany)

Synthesis, Enantioseparation and Pharmacological Activity of 4-Aryl-7,7-dimethyl-5-oxo-1,2,3,4,5,6,7,8-octahydroquinazoline-2-thiones

Mine Yarim
a   Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Hacettepe University, Ankara, Turkey
,
Selma Saraç
a   Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Hacettepe University, Ankara, Turkey
,
Mevlüt Ertan
a   Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Hacettepe University, Ankara, Turkey
,
F. Sultan Kiliç
b   Department of Pharmacology, Faculty of Medicine, Osmangazi University, Eskişehir, Turkey
,
Kevser Erol
b   Department of Pharmacology, Faculty of Medicine, Osmangazi University, Eskişehir, Turkey
› Author Affiliations
Further Information

Publication History

Publication Date:
26 December 2011 (online)

Summary

4-Aryl-7,7-dimethyl-5-oxo-1,2,3,4,5,6,7,8-octahydroquinazoline-2-thione derivatives (1–8) have been prepared by modified Biginelli reaction from 5,5-dimethyl-1,3-cyclohexanedione, the aromatic aldehydes and thiourea. The structures of the compounds were confirmed by spectroscopic and elemental analysis. Racemic compounds were resolved into their enantiomers by HPLC using an amylose tris-(3,5-dimethylphenylcarbamate) chiral stationary phase in the normal phase mode. The calcium antagonist activities of the compounds were determined by the tests performed on isolated rat ileum and lamb carotid artery. Compounds 2, 3, 4 and 6 were the most active compounds on isolated rat ileum. Compounds 2 and 3 were significantly active on lamb carotid artery.

Zusammenfassung

Synthese, Enantiomerentrennung und pharmakologische Aktivität von 4-Aryl-7,7-dimethyl-5-oxo-1,2,3,4,5,6,7,8-octa-hydrochinazolin-2-thionen

Durch eine Variation der Biginelli-Synthese wurden 4-Aryl-7,7-dimethyl-5-oxo-1,2,3,4,5,6,7,8-octahydrochinazoline-2-thion-Derivative (1–8) aus 5,5-Dimethyl-1,3-cyclohexandion, den aromatischen Aldehyden und Thioharnstoff dargestellt. Die Strukturaufklärung der Substanzen erfolgte durch spektroskopische- und Elementaranalyse. Die razemischen Substanzen wurden durch HPLC mit Amylosetris(3,5-dimethylphenylcarbamat) in Enantiomere getrennt. Die Kalzium-antagonistische Wirkung der Substanzen wurde am isolierten Rattenileum und an der Lammkarotis untersucht. Die Substanzen 2, 3, 4 und 6 zeigten in den Tests am isolierten Rattenileum die höchste Aktivität. In den Lammkarotistests waren die Substanzen 2 und 3 signifikant wirksam.