Therapeutic agents

A method for combatting psychic depression in mammals which comprises administering to a psychically depressed mammal in need of said treatment an effective dosage for combatting the psychic depression of the compound of the formula ##SPC3##

• wherein X is halogen or trifluoromethyl, Y and Z may be the same or different and are hydrogen, halogen, trifluoromethyl or alkyl of 1 to 4 carbon atoms, R, R',R" and R.degree. each hydrogen, alkyl of 1 to 4 carbon atoms, alkenyl of 2 to 4 carbon atoms or alkynyl of 2 to 4 carbon atoms with the proviso that R" and R.degree. may together form an alklene or alkenylene bridge of 2 to 4 carbon atoms, with the further proviso that one of Y and R must be hydrogen, or a pharmaceutically acceptable salt thereof.