| 摘要 |
Quinazoline derivatives of the formula
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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
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(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. |
