| abstract |
PROCEDURE FOR PREPARING GUANIDINE DERIVATIVES, OF GENERAL FORMULA (I), IN WHICH R1 AND R2, EQUAL OR DIFFERENT, ARE HYDROGEN ATOMS OR ALKYL RADICALS; R3 IS A HYDROGEN ATOM OR AN ALKYL RADICAL; R4 IS A RADICAL OF FORMULA HNR7, IN WHICH R7 IS A HYDROGEN ATOM OR AN ALKYL RADICAL; IN RING X THE DOTTED LINE IS A DOUBLE BOND; Z IS A CARBON OR NITROGEN ATOM; AND A IS A PHENYLENE OR CYCLOALKYLENE RADICAL. IT CONSISTS IN REACTING A COMPOUND OF FORMULA (II) WITH A COMPOUND OF FORMULA (III), IN WHICH G IS AN OXYGEN OR SULFUR ATOM; R13 IS A DISPLACEABLE RADICAL; AND A1 AND A2 ARE DISPLACEABLE RADICALS. OF APPLICATION AS INHIBITORS OF THE SECRETION OF GASTRIC ACID. |