C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
260/242.01
C07D 471/04 (2006.01) C07D 209/38 (2006.01) C07D 213/61 (2006.01)
Patent
CA 1130805
ABSTRACT Novel pyrido[2,1-b]quinazolinone derivatives of the formula I Image (I) [in which X represents cyano, hydroxyamidocarbonyl, carbamoyl, tetrazol-5-yl, carboxyl or a physiologically tolerable salt (with a base), ester or amide of a carboxyl group, R1 represents H or methyl, R2 to R5 each represents H, halogen, C1-C4-alkyl, trifluoromethyl, carboxyl, thiocyano, methylthio, methylsulphinyl, methyl- sulphonyl, methylsulphonimidoyl, methylsulphonamido or a physiologically tolerable salt (with a base) of a carboxyl group, with the proviso that at least 2 of R2 to R5 represent H] and physiologically tolerable salts thereof with acids and processes for the manufacture of these compounds. The pyrido[2,1-b]quinazolinone derivatives and their salts have an antiphlogistic, antipyretic, analgesic and antiallergic activity and may accordingly be made up into pharmaceutical preparations with suitable carriers.
337796
Biere Helmut
Bocher Irmgard
Kapp Joachim-Friedrich
Marks & Clerk
Schering Aktiengesellschaft
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