<p>(A) Alkylated- N, N'-disubstd. diaza-cyclo-alkanes of general formula (I): R1-R4 are same or different and: H or lower alkyl (C1-4); at least one of R1-R4 is lower alkyl; m = 0 or 1; n = 2 or 3. (B) Acid addition salts of (I) with acceptable acids. (I) have coronary dilatory activity. N, N'-Bis-(gamma-(3', 4', 5'-trimethoxybenzoyl-oxy)-propyl)2-methylpiperazine.</p>
