| abstract |
PROCEDURE FOR PREPARING NEW SEMICARBAZIDES. IT CONSISTS OF REACTIONING FORMULA (II) COMPOUNDS WITH A CARBAMOIL CHLORIDE OF FORMULA (III) TO OBTAIN NEW SEMICARBAZIDAS FROM FORMULA (I), WHERE R1 ES C H2 R2, R3 and R4 ARE H, METHYL OR ETHYL; R5 IS H, ALCOHYL C 1 TO 8, CYCLOALCOHYL C 3 TO 7 AND OTHERS, THE REACTION IS PERFORMED AT ROOM TEMPERATURE IN THE PRESENCE OF A SOLVENT SUCH AS TETRAHYDROFURAN, DIOXANE, ETHER, DIMETHYLFORMAMIDE AND OTHER; AND IN THE PRESENCE OF AN ACID COLLECTOR AGENT SUCH AS POTASSIUM OR SODIUM CARBONATE, IT HAS THERAPEUTIC APPLICATION IN PHOSPHORODIESTERASE AND LONG-EFFECTING CARDIAC INHIBITORS. |