| abstract |
THE INVENTION RELATES TO COMPOUNDS OF THE FORMULA: (CF DRAWING IN BOPI) OR Q, R AND R ARE EACH A HYDROGEN ATOM OR A LOWER ALKYL GROUP, PY IS A 4- OR 3-PYRIDINYL GROUP WHICH IS POSSIBLE SUBSTITUTED, R AND R ARE EACH AN ATOM OF HYDROGEN OR A LOWER ALKYL GROUP, LOWER HYDROXYALKYL, 2,3-DIHYDROXYPROPYL, LOWER ALCOXYALKYL OR Y-NB OR Y IS A LOWER ALKYLENE GROUP, AND NB ALKYL 4 IS A LOWER AMINO GROUP OR NB ALKYL 4 () MORPHOLINYL. THE INVENTION ALSO DESCRIBES THE METHODS FOR PREPARING THE COMPOUNDS 1 AND THEIR SALTS AND THE INTERMEDIARIES USED FOR THEIR PREPARATION. SOME OF THE COMPOUNDS OF THE FORMULA HAVE CARDIOTONIC USEFULNESS, AND THEY ARE ALL FOR USE AS SYNTHETIC INTERMEDIARIES OF OTHER CARDIOTONIC COMPOUNDS. FURTHERMORE, CERTAIN INTERMEDIARIES FOR THE PREPARATION OF THE COMPOUNDS OF FORMULA CAN BE USED AS CARDIOTONIC AGENTS. |