SUBSTITUTED 2,5-DIHYDRO-3H-PYRAZOLO[4,3-C]PYRIDAZIN-3-ONE DERIVATIVES, PREPARATION THEREOF AND USE OF SAME AS CANNABINOID CB1 RECEPTOR LIGANDS

摘要

The invention relates to compounds having the formula (I), wherein R1 represents: a substituted or non-substituted (C1-C12)alkyl; a non aromatic (C3-C12) carbocylic substituted or non substituted radical; a substituted or non substituted phenyl; a substituted or non substituted benzyl; a substituted or non substituted phenethyl; a benzhydryl; a benzhydrylmethyl; a heterocyclic aromatic radical; R2 represents a non substituted or substituted phenyl; R3 represents a substituted or non substituted phenly; R4 represents a hydrogen atom, a (C1-C-4)alkyl, a (C1-C4)alcoxy, a hydroxy; AIk represents a substituted or non substituted (C1-C4)alkyl. The invention also relates to the method for preparing same and to the use thereof in therapeutics as central and/or peripheral cannabinoid CB1 receptor ligands.