PROCESS FOR THE PREPARATION OF 2-NITRO-1,1-ETHENEDIAMINES HAVING A HYPOTENSIVE EFFECT AND THEIR USE FOR THE PREPARATION OF PHARMACEUTICAL COMPOSITIONS WITH A HYPOTENSIVE EFFECT

摘要

Compounds of the formula IMAGE in which R1 is an optionally substituted aryl or heteroaryl radical, R2 is an alkyl or alkenyl radical which is optionally substituted by alkoxy or cycloalkyl, or an optionally substituted aryl or heteroaryl radical, and X is an optionally aklyl-substituted methylene radical or a direct bond, but if X is a direct bond R2 is not aryl, or physiologically acceptable acid addition salts thereof, exhibit activity on the circulation system particularly as hypotensive agents.