| abstract |
2-Aryltetraazaindenes of the formula <IMAGE> wherein -A- is -N=CH-CH=N- or -CH=N-N=CH-, Ar is unsubstituted phenyl or phenyl mono-, di- or trisubstituted by hydroxyl, mercapto, dialkylamino, trifluoromethyl and/or -Z-R groups, Z is -O-, -S- or -SO- and R is alkyl, alkenyl, alkynyl or cyanomethyl, the alkyl, alkenyl and alkynyl groups each having up to 5 C atoms, and their physiologially acceptable salts, exhibit blood pressure, myocardial contraction, and anti-ulcer activities. |