Alkoxycoumarins substituted by a heterocyclic radical, their preparation and therapeutic agents containing these compounds

Abstract From the Canadian patent

Abstract of the Disclosure: An alkoxycoumarin substituted by a heterocyclic radical, of the formula I, R1 and R2 independently of one another are each hydrogen C1-C5-alkyl, trifluoromethyl, phenyl or halogen or, together form a C3-C5-alkylene chain R3 is C1-C5-alkyl or, halogen, n is an integer of from 0 to 3 R4 is hydrogen or, C1-C4-alkyl and Het is one of the following heterocyclic radicals:, where X is oxygen or sulfur R5 is unsubstituted or C1-, C4-alkoxy-substituted C1-C10-alkyl 5-membered or 6-, membered oxacycloalkyl C3-C7-cycloalkyl, benzyl, phenyl, which is unsubstituted or substituted by halogen or NO2 a pyridine ring, C1-C5-alkoxycarbonyl or perfluoro-C1-C2alkyl, R6 is …