Carbocyclic diarylmethylene derivatives, processes for their preparation and their uses in therapeutics

A carbocyclic diarylmethylene compound of formula (I):

• ##STR15## in which:
• the ring A is:
• a phenyl ring, or,
• a pyridyl ring;
• the ring B is a ring containing five carbon atoms:
• which is saturated or
• unsaturated, in which case R.sub.2 and/or R.sub.4 are absent in order to respect the valencies of the carbon atom;
• X.sub.1 and X.sub.2 independently are:
• the hydrogen atom,
• a halogen atom,
• a hydroxyl group,
• a lower alkyl radical having 1 to 6 carbon atoms,
• a trifluoromethyl radical,
• a lower O-alkyl radical having 1 to 6 carbon atoms, or
• a radical NR.sub.5 R.sub.6,
• or else X.sub.1 and X.sub.2 are a methylenedioxy group;
• R.sub.1, R.sub.2, R.sub.3 and R.sub.4 independently are:
• the hydrogen atom,
• a halogen atom,
• a lower alkyl radical having 1 to 6 carbon atoms, or
• a lower haloalkyl radical having 1 to 6 carbon atoms,
• R.sub.5 and R.sub.6 independently are:
• a lower alkyl radical having 1 to 6 carbon atoms or
• the hydrogen atom;
• and
• R is:
• a lower alkyl radical having 1 to 6 carbon atoms,
• a lower haloalkyl radical having 1 to 6 carbon atoms, or
• a group NH.sub.2.