Agonist compounds of FGF receptors corresponding to the general formula: M1-L-M2 in which M1 and M2, which may be identical or different, each represent, independently of one another, a monomer unit M and L represents a linker group linking M1 and M2 covalently, characterized in that said monomer unit corresponds to the general formula M that follows: in which, * indicates the site of linkage between monomer unit M and linker L, - R1 represents. a group -NHCOPh, said phenyl being substituted with an oxygen atom, so that the oxygen atom is the site of linkage between the monomer unit and the linker L； This group can be designated -NHCOPhO *, or. an aryl group, in particular phenyl, or a heteroaryl group, said group being substituted with a group selected from a divalent oxygen atom so that the oxygen atom is the site of linkage between the monomer unit and the linker L, or an amide group -CONH * -, so that the nitrogen atom is the binding site between the monomer unit and the linker L, - R2 represents an alkyl group, - R3 represents a hydrogen atom or a linear alkyl group, branched, cyclic or partially cyclic, - R4 represents a hydrogen atom or an alkyl or -alkyl-COOR5 group, R5 representing a hydrogen atom or an alkyl group, - L is chosen from the radicals having the following formulas: ** Formulas ** in which - * indicates the connection atom of L with the monomer unit M in the substituent R1, - n represents an integer from 0 to 5, - m represents an integer from 1 to 5, - r represents an integer from 1 to 6, - R2 'and R2 ", which they may be identical or different, they represent a linear alkyl radical having 1 to 5 carbon atoms, and which may be optionally bonded to form a ring, - R6 represents a (C1-C4) alkyl group, optionally substituted with one or more substituents selected from: - an aryl or heteroaryl group, optionally substituted with a group selected from a hydroxyl, amine or NR6'R6 "group, R6 'and R6" being chosen, which may be identical or different, fro
