Abstract: Dibenzo[a,d]cycloheptene derivatives of the formula: ##SPC1##Wherein x represents hydrogen, halogen, alkyl, alkoxy, alkylthio or trifluoromethyl, R.sub.1 and R.sub.2 represent hydrogen or alkyl, and R.sub.3 represents hydroxy, alkoxy, 4-(2,4-dimethyl-1,3-dioxolanyl)-methoxy, or a group --NR.sub.4 R.sub.5 in which R.sub.4 and R.sub.5 represents hydrogen, alkyl, hydroxyalkyl or phenyl, or --NR.sub.4 R.sub.5 represents a mononuclear 5- or 6-membered heterocyclic group containing a second hetero atom selected from oxygen, sulphur, and nitrogen which is optionally substituted by alkyl, said alkyl, alkoxy, alkylthio and hydroxyalkyl radicals containing 1 to 4 carbon atoms, are new compounds possessing pharmacological properties, more particularly analgesic, antipyretic and anti-inflammatory properties.

Abstract: Dibenzo[a,d]cycloheptene derivatives of the formula: ##SPC1##Wherein X represents hydrogen, halogen, alkyl, alkoxy, alkylthio or trifluoromethyl, R.sub.1 and R.sub.2 represent hydrogen or alkyl, and R.sub.3 represents hydroxy, alkoxy, 4-(2,2-dimethyl-1,3-dioxolanyl)-methoxy, or a group --NR.sub.4 R.sub.5 in which R.sub.4 and R.sub.5 represent hydrogen, alkyl, hydroxyalkyl or phenyl, or --NR.sub.4 R.sub.5 represents a mononuclear 5- or 6-membered heterocyclic group optionally containing a second hetero atom selected from oxygen, sulphur, and nitrogen which is optionally substituted by alkyl, said alkyl, alkoxy, alkylthio and hydroxyalkyl radicals containing 1 to 4 carbon atoms, are new compounds possessing pharmacological properties, more particularly analgesic, antipyretic and anti-inflammatory properties.