| abstract |
Cpds. of formula (I): (where R1 = H, Cl, Br, or 1-4C alkyl; R2 = H, F, Cl, Br, No2, or CF3; R3 = Cl, Br, 1-3C alkoxy, 1-3C alkylthio, 3-6C cycloalkyl, 3-6C cycloalkenyl, or an opt. unsatd., 5 or 6-membered, O, S, or N heterocyclic gp. opt. N-substd. by l. alkyl or (if R1 = Br) by H, 1-4C alkyl, or 1-4C hydroxyalkyl), and acid addn. salts of (I), are useful as anxiolytics, muscle-relaxants and tranquillisers with anti-cramp action. |