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Updated: Oct 19, 2026

Facile Preparation of 4-Substituted Quinazoline Derivatives
Published on: February 15, 2016
Synthesis, structural studies and pharmacological activity of novel bicyclic compounds derived from
H Novoa de Armas1, N Blaton, O M Peeters
1Center of Pharmaceutical Chemistry, Havana, Cuba.
Abstract:
The purpose of this research is to characterize the possible vascular selectivity of a series of novel bicyclic compounds derived from 3,4-dihydropyridones. We describe the synthesis, structural study by X-ray analysis and quantum chemical calculations at semiempirical (AMI) and ab initio (HF/321G) levels and pharmacological activity of these 4-aryl-7,7-dimethyl-2,5-dioxo-1,2,3,4,5,6,7,8-octahydroquinolines. In addition, the more favoured conformation for compounds 4a-c in solution was determined from the calculated and experimental proton coupling constants. We report the first computational study on the structure of octahydroquinolines. The results of ab initio (HF/3-21G) and semiempirical molecular orbital calculations (AMI) are compared with the data obtained by X-ray crystallographic study for 4a.
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