Compounds within formula ##STR1## and their salts wherein X is alkylene of 2 - 4 carbon atoms; R.sub.1 is hydrogen or alkyl of 1 - 6 carbon atoms; R.sub.2 is hydrogen, alkyl of 1 - 6 carbon atoms or benzyl, or R.sub.1 and R.sub.2 together with the nitrogen atom to which they are attached form a 5-, 6- or 7-membered saturated ring; R.sub.3 is aryl; R.sub.4 is hydrogen or alkyl of 1 - 4 carbon atoms; and R.sub.5 is hydrogen or alkyl of 1 - 4 carbon atoms; have been found to possess mood-modifying and anorexia inducing activity.