| abstract |
PROCEDURE FOR THE PREPARATION OF FORMULA (I) PRODUCTS, AND ITS ACID ADDITION SALTS, WHERE R1 IS C1-C4 ALKYL; R2 IS PHENYL OR CYCLOALKYL, SUBSTITUTED OR NOT; AND ALK IS ALKYLENE OF 3 OR 4 CARBON ATOMS. BY REACTION OF A COMPOUND OF FORMULA (II) WITH ANOTHER OF FORMULA (III), WHERE R1, R2 AND ALK ARE ALREADY INDICATED, AND ZYX, IN EACH DIFFERENT CASE, ARE A AMINO OR HYDROXYL GROUP. EVENTUALLY, PROTECTING GROUPS PRESENT IN THE COMPOUNDS OBTAINED THROUGH CATALYTIC HYDROGENATION OR ACID OR ALKALINE SAPONIFICATION ARE SEPARATED FROM APPLICATION AS VASODILATORS. |