VERFAHREN ZUR HERSTELLUNG VON NEUEN 4-OXO-4HPYRIDO(1,2-A)PYRIMIDINDERIVATEN SOWIE VON DEREN SAEUREADDITIONS- ODER QUATERNAEREN SALZEN

• Main Authors: SZENTMIKLOSI PETER DR, MESZAROS ZOLTAN.. .DR, HERMECZ ISTVAN.. .DR, BERNATH GABOR DR, NAGY GABOR DR, VIRAG SANDOR DR, KNOLL JOZSEF DR, FUELOEP FERENC
• Format: Patent
• Language: German
• Published: 15.01.1982
• Edition: 2
• Subjects: CHEMISTRY; HETEROCYCLIC COMPOUNDS; HUMAN NECESSITIES; HYGIENE; MEDICAL OR VETERINARY SCIENCE; METALLURGY; ORGANIC CHEMISTRY; PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES; SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS ORMEDICINAL PREPARATIONS

Compounds of the formula or pharmaceutically acceptable acid-addition or quaternart ammonium salts thereof wherein R is hydroxy, carboxy, lower alkoxycarbonyl, benzyloxycarbonyl, phenoxycarbonyl, carbamoyl, N-loweralkyl-carbamoyl, N,N-dilower-alkyl-carbamoyl, carboazido, carbohydrazido or cyano; R2 is C1 to C6 alkyl; R3 is C1 to C6 alkyl or benzyl; and R4 is a single electron pair, hydrogen or lower alkyl; and the dotted lines represent saturated or unsaturated bonds, are disclosed with analgesic properties.