| abstract |
PROCEDURE FOR OBTAINING PIRIDONE DERIVATIVES AND ITS SALTS, FROM FORMULA (I), IN WHICH R AND R MAY BE SEVERAL TYPES OF RADICALS; AND THE BENZENE RING A MAY HAVE ONE OR MORE SUBSTITUTES.CONSISTS IN THE REACTION OF HYDRAZINE WITH A COMPOUND OF FORMULA (II), IN WHICH A, R AND R HAVE THE SAME MEANINGS AS IN FORMULA (I) AND R- C1 IS ALKYL Four. THE REACTION IS CARRIED OUT IN AN INERT SOLVENT OR DILUENT, SUCH AS ETHANOL OR ISOPROPANOL, AT THE BOILING TEMPERATURE OF THE REACTION MIXTURE. THESE COMPOUNDS HAVE PHARMACOLOGICAL APPLICATIONS FOR THEIR CARDIOTONIC PROPERTIES. |