PROCEDEU PENTRU PREPARAREA UNOR DERIVATI DE PIPERIDINILALCHILCHINAZOLINA

摘要

Quinazoline derivatives of the formula …… wherein Ra is hydrogen or alkyl and and q is 2 or 3;… R is hydorgen, hydroxy and alkyl;… Alk is an alkylene chain having from 1 to 4 carbon atoms and Q is a quinazolinyl radical, the 1-, 2-, 3- or 4-position of which is connected with the alkylene side chain, said quinazolinyl radical bearing in one or both of its 2-and 4-positions a carbonyl or thiocarbonyl group, wherein the benzene ring of said quinazolinyl radical is optionally substituted with 1 to 3 substituents each independently selected from the group consisting of halo, alkyl; alkyloxy, trifluoromethyl, nitro and cyano, and wherein the pyrimidino ring of said quinazolinyl radical may be partly or fully saturated, said pyrimidino ring being optionally substituted with 1 to 3 substituents independently selected from the group consisting of alkyl, aryl and aryl(lower alkyl);… wherein said aryl as used in the definition of said Ar and of said Q is a member selected from the group consisting of phenyl, substituted phenyl, thienyl and pyridinyl, wherein said substituted phenyl has from 1 to 3 substituents each independently selected from the group consisting of halo, lower alkyl, lower alkyloxy, trifluoromethyl and amino. These derivatives are serotonin antagagonists. Further are described compounds of the formula …… (Q, Alk and R have the same meaning as above), R8 and R9 being hydrogen, halogen, alkyl, alkoxy, CF3 and amino, having the same activity.