| abstract |
METHOD OF OBTAINING PIRAZOLO- AND PIRIDAZO-PIRAZOLINES, -PYRIDAZINES AND -DIAZEPINES. CONSISTS OF TREATING WITH A BASE A COMPOUND OF FORMULA (II), AT TEMPERATURE BETWEEN AMBIENT AND THE BOILING POINT OF THE MIXTURE, TO OBTAIN THE COMPOUNDS OF FORMULA (I) AND ITS PHARMACEUTICALLY ACCEPTABLE SALTS, WHERE B IS A GROUP OF B METHYLENE ETHYLENE OR VINYLENE; R1 IS H OR A GROUP OF RENTAL, ARALKYL AND OTHERS; R2 IS A CARBOXYL, ALCOXYCARBOXYL OR ARALCOXYCARBONYL GROUP AND OTHERS; R3 IS A CARBOXYL GROUP; R4 AND R5 ARE AN H ATOM OR AN OXO GROUP; AND N IS 0, 1 OR 2. THEY ARE USEFUL TO FORM PHARMACEUTICAL COMPOSITIONS. |