Preparation method of New Derivatives of 4 - hidrazinocarbonil - as well as hidrozonometil - 4 - 7 - oxicorbanil - 1 - ftalazona

摘要

Phthalazone derivatives of the formula IMAGE wherein R4 represents a carbamoyl group, a dialkylaminoalkylcarbamoyl group, a hydroxyalkylcarbamoyl group, an alkylidenehydrazinocarbonyl group, a hydrazinocarbonyl group, an alkylhydrazinocarbonyl group, a formyl group, a hydrazonomethyl group, an alkylhydrazonomethyl group, a hydroxyiminomethyl group, a dialkylhydrazonomethyl group or an alkylidenehydrazonomethyl group; R6, R7 and R8 each represent an alkyl group; and process for preparing same. The phthalazone derivatives are useful for the treatment and prevention of cerebral apoplexy, myocardial infarction and the like.