Azetidine derivatives, their preparation and their application in therapy

1. A Compound of formula (I):

wherein:

R represents a (C 1 -C 6 )alkyl or halo(C 1 -C 6 )alkyl group;

R′ represents an NR4R5 or OR8 group;

A and B, which can be present or not, which if they are present, are, independently of one another, one or two carbon atoms, these carbon atoms being substituted with one or more hydrogens or (C 1 -C 6 )alkyl group; the (C 1 -C 6 )alkyl group(s) being optionally substituted with one or more hydroxyl, (C 1 -C 6 )alkoxy, halo(C 1 -C 6 )alkyl, (C 1 -C 6 )alkylS(O) p , NR4R5 or CONR4R5 groups;

A+B represents at most two carbons;

R1 represents a hydrogen atom or a (C 1 -C 6 )alkyl group;

R2 and R3 are, independently of one another, a hydrogen atom or a (C 1 -C 6 )alkyl group; the (C 1 -C 6 )alkyl group being optionally substituted with one or more hydroxyl, (C 1 -C 6 )alkoxy, halo(C 1 -C 6 )alkyl, (C 1 -C 6 )alkylS(O) p , NR4R5 or CONR4R5 groups;

R4 and R5 are, independently of one another, a hydrogen atom or a (C 1 -C 6 )alkyl group, or R4 and R5, together with the nitrogen atom which carries them, form an azetidine, pyrrolidine, piperidine, azepane, piperazine, homopiperazine, morpholine, thiomorpholine, thiomorpholine S-oxide or thiomorpholine S-dioxide group, the NR4R5 group being optionally substituted by a (C 1 -C 6 )alkyl group;

R6 and R7 each represent a phenyl group, the phenyl group being optionally substituted with one or more substituents selected from a hydrogen atom, a halogen, a (C 1 -C 6 )alkyl, halo(C 1 -C 6 )alkyl, (C 1 -C 6 )alkoxy, halo(C 1 -C 6 )alkoxy or cyano group;

Y represents a hydrogen atom, halogen, (C 1 -C 6 )alkyl, halo(C 1 -C 6 )alkyl, (C 1 -C 6 )alkoxy, halo(C 1 -C 6 )alkoxy, (C 1 -C 6 )alkylS(O) p or cyano group;

R8 represents a hydrogen atom, a (C 1 -C 6 )alkyl, halo(C 1 -C 6 )alkyl group, allyl or a phenyl(C 1 -C 6 )alkyl group, the phenyl group being optionally substituted with 1 or 2 O-methyl groups; and

p is 0, 1 or 2;

or a salt thereof.

2. The compound of formula (I) according to claim 1 , wherein:

R represents a methyl;

A and B, which can be present or not, which if they are present, are, independently of one another, a —CH 2 —;

R1 represents a hydrogen atom;

R2 and R3 represent, independently of one another, a hydrogen atom or a (C 1 -C 6 )alkyl group; the (C 1 -C 6 )alkyl group being optionally substituted with a hydroxyl group;

R4 and R5 represent, independently of one another, a hydrogen atom or a methyl group, or R4 and R5, together with the nitrogen atom which carries them, form a morpholine;

R6 and R7 each represent a phenyl group, optionally substituted in the para position with one or more substituents selected from a halogen, (C 1 -C 6 )alkyl, halo(C 1 -C 6 )alkyl, (C 1 -C 6 )alkoxy, halo(C 1 -C 6 )alkoxy or cyano group;

R8 represents a hydrogen atom or a (C 1 -C 6 )alkyl group; and

Y represents a hydrogen, halogen, (C 1 -C 6 )alkoxy group, (C 1 -C 6 )alkyl; a cyano; or a halo(C 1 -C 6 )alkyl group.

3. The compound of formula (I) according to claim 2 , wherein:

R6 and R7 are each a phenyl group substituted with a chlorine, fluorine or bromine atom or a Me, OMe, CN, CF 3 or OCF 3 group, in the para-position; and

Y represents a hydrogen, a halogen, a (C 1 -C 6 )alkoxy group; a (C 1 -C 6 )alkyl group; a cyano; or a halo(C 1 -C 6 )alkyl group.

4. The compound of formula (I) according to claim 2 , wherein:

Y is a hydrogen, chlorine, fluorine or bromine atom or a Me, OMe, CN or CF 3 group.

5. The compound of formula (I) according to claim 4 , wherein:

R6 and R7 are each a phenyl group substituted with a chlorine, fluorine or bromine atom or a Me, OMe, CN, CF 3 or OCF 3 group, in the para-position.

6. The compound of formula (I) according to claim 1 , wherein said compound is selected from the group consisting of:

3-({1-[bis(4-chlorophenyl)methyl]azetidin-3-yl}methanesulphonylamino)-N—((S)-1-carbamoylethyl)benzamide;

3-({1-[bis(4-chlorophenyl)methyl]azetidin-3-yl}methanesulphonylamino)-N-carbamoylmethyl-5-fluorobenzamide;

3-({1-[bis(4-chlorophenyl)methyl]azetidin-3-yl}methanesulphonylamino)-N—((S)-1-carbamoylethyl)-5-fluorobenzamide;

3-({1-[bis(4-chlorophenyl)methyl]azetidin-3-yl}methanesulphonylamino)-N—((R)-1-carbamoylethyl)-5-fluorobenzamide;

3-({1-[bis(4-chlorophenyl)methyl]azetidin-3-yl}methanesulphonylamino)-N—((R)-1-carbamoylethyl)benzamide;

3-({1-[bis(4-chlorophenyl)methyl]azetidin-3-yl}methanesulphonylamino)-N—((S)-1-carbamoyl-2-hydroxyethyl)benzamide;

3-({1-[bis(4-chlorophenyl)methyl]azetidin-3-yl}methanesulphonylamino)-N-(2-carbamoylethyl)benzamide;

3-({1-[bis(4-chlorophenyl)methyl]azetidin-3-yl}methanesulphonylamino)-N-(2-morpholin-4-yl-2-oxoethyl)benzamide;

3-({1-[bis(4-chlorophenyl)methyl]azetidin-3-yl}methanesulphonylamino)-N—((S)-1-methylcarbamoylethyl)benzamide;

3-({1-[bis(4-chlorophenyl)methyl]azetidin-3-yl}methanesulphonylamino)-N—((S)-1-carbamoylpropyl)benzamide;

3-({1-[bis(4-chlorophenyl)methyl]azetidin-3-yl}methanesulphonylamino)-N—((S)-1-carbamoyl-3-methylbutyl)benzamide;

3-({1-[bis(4-chlorophenyl)methyl]azetidin-3-yl}methanesulphonylamino)-N—((S)-1-carbamoyl-2-methylpropyl)-5-fluorobenzamide;

3-({1-[bis(4-chlorophenyl)methyl]azetidin-3-yl}methanesulphonylamino)-N—((S)-1-carbamoyl-2-hydroxyethyl)-5-fluorobenzamide;

3-({1-[bis(4-chlorophenyl)methyl]azetidin-3-yl}methanesulphonylamino)-N—((S)-1-carbamoylpropyl)-5-fluorobenzamide;

3-({1-[bis(4-chlorophenyl)methyl]azetidin-3-yl}methanesulphonylamino)-N-(methylcarbamoylmethyl)benzamide;

3-({1-[bis(4-chlorophenyl)methyl]azetidin-3-yl}methanesulphonylamino)-N-(carbamoylmethyl)benzamide;

(S)-2-[3-({1-[bis(4-chlorophenyl)methyl]azetidin-3-yl}methanesulphonylamino)benzoylamino]propionic acid tert-butyl ester;

(S)-2-[3-({1-[bis(4-chlorophenyl)methyl]azetidin-3-yl}methanesulphonylamino)benzoylamino]propionic acid;

3-({1-[bis(4-chlorophenyl)methyl]azetidin-3-yl}methanesulphonylamino)benzoylaminoacetic acid tert-butyl ester;

4-[3-({1-[bis(4-chlorophenyl)methyl]azetidin-3-yl}methanesulphonylamino)-5-fluorobenzoylamino]butyric acid tert-butyl ester;

(S)-2-[3-({1-[bis(4-chlorophenyl)methyl]azetidin-3-yl}methanesulphonylamino)-5-fluorobenzoylamino]propionic acid tert-butyl ester;

3-({1-[bis(4-chlorophenyl)methyl]azetidin-3-yl}methanesulphonylamino)-N—((S)-1-carbamoylethyl)-5-methoxybenzamide;

3-({1-[bis(4-chlorophenyl)methyl]azetidin-3-yl}methanesulphonylamino)-N—((S)-1-dimethylcarbamoylethyl)benzamide;

4-[3-({1-[bis(4-chlorophenyl)methyl]azetidin-3-yl}methanesulphonylamino)benzoylamino]butyric acid tert-butyl ester;

(S)-2-[3-({1-[bis(4-chlorophenyl)methyl]azetidin-3-yl}methanesulphonylamino)-5-fluorobenzoylamino]propionic acid and the sodium salt thereof;

3-({1-[bis(4-chlorophenyl)methyl]azetidin-3-yl}methanesulphonylamino)-5-fluoro-N—((S)-1-methylcarbamoylethyl)benzamide;

3-({1-[bis(4-chlorophenyl)methyl]azetidin-3-yl}methanesulphonylamino)-N-((1S,2R)-1-carbamoyl-2-hydroxypropyl)benzamide;

3-({1-[bis(4-chlorophenyl)methyl]azetidin-3-yl}methanesulphonylamino)-N-(3-carbamoylpropyl)-5-fluorobenzamide;

[3-({1-[bis(4-chlorophenyl)methyl]azetidin-3-yl}methanesulphonylamino)benzoylamino]acetic acid;

3-({1-[bis(4-chlorophenyl)methyl]azetidin-3-yl}methanesulphonylamino)-N—((S)-1-carbamoylethyl)-2-fluorobenzamide;

3-({1-[bis(4-chlorophenyl)methyl]azetidin-3-yl}methanesulphonylamino)-N—((S)-1-methylcarbamoylethyl)-2-fluorobenzamide;

3-({1-[bis(4-chlorophenyl)methyl]azetidin-3-yl}methanesulphonylamino)-N—((S)-1-carbamoylethyl)-6-fluorobenzamide;

3-({1-[bis(4-chlorophenyl)methyl]azetidin-3-yl}methanesulphonylamino)-N—((S)-1-carbamoylpropyl)-6-fluorobenzamide;

3-({1-[bis(4-chlorophenyl)methyl]azetidin-3-yl}methanesulphonylamino)-N—((S)-1-carbamoyl-2-methylpropyl)-6-fluorobenzamide;

3-({1-[bis(4-chlorophenyl)methyl]azetidin-3-yl}methanesulphonylamino)-N—((S)-1-methylcarbamoylethyl)-6-fluorobenzamide;

3-({1-[bis(4-chlorophenyl)methyl]azetidin-3-yl}methanesulphonylamino)-N—((S)-1-carbamoylpropyl)-4-fluorobenzamide;

3-({1-[bis(4-chlorophenyl)methyl]azetidin-3-yl}methanesulphonylamino)-N-carbamoylmethyl-5-methylbenzamide;

3-({1-[bis(4-chlorophenyl)methyl]azetidin-3-yl}methanesulphonylamino)-N—((S)-1-carbamoylethyl)-5-methylbenzamide;

3-({1-[bis(4-chlorophenyl)methyl]azetidin-3-yl}methanesulphonylamino)-N—((S)-1-carbamoylpropyl)-5-methylbenzamide;

3-({1-[bis(4-chlorophenyl)methyl]azetidin-3-yl}methanesulphonylamino)-N—((S)-1-carbamoyl-2-methylpropyl)-5-methylbenzamide;

3-({1-[bis(4-chlorophenyl)methyl]azetidin-3-yl}methanesulphonylamino)-N—((S)-1-methylcarbamoylethyl)-5-methylbenzamide;

3-({1-[bis(4-chlorophenyl)methyl]azetidin-3-yl}methanesulphonylamino)-N—((S)-1-carbamoyl-2-hydroxyethyl)-5-methylbenzamide;

3-({1-[bis(4-chlorophenyl)methyl]azetidin-3-yl}methanesulphonylamino)-N—((S)-1-carbamoylethyl)-5-chlorobenzamide;

3-({1-[bis(4-chlorophenyl)methyl]azetidin-3-yl}methanesulphonylamino)-N—((S)-1-carbamoylpropyl)-5-chlorobenzamide;

3-({1-[bis(4-chlorophenyl)methyl]azetidin-3-yl}methanesulphonylamino)-N—((S)-1-carbamoyl-2-methylpropyl)-5-chlorobenzamide;

3-({1-[bis(4-chlorophenyl)methyl]azetidin-3-yl}methanesulphonylamino)-N—((S)-1-methylcarbamoylethyl)-5-chlorobenzamide;

3-({1-[bis(4-chlorophenyl)methyl]azetidin-3-yl}methanesulphonylamino)-N—((S)-1-carbamoyl-2-hydroxyethyl)-5-chlorobenzamide;

3-({1-[bis(4-chlorophenyl)methyl]azetidin-3-yl}methanesulphonylamino)-N—((S)-1-carbamoylethyl)-5-bromobenzamide;

3-({1-[bis(4-chlorophenyl)methyl]azetidin-3-yl}methanesulphonylamino)-N—((S)-1-carbamoylpropyl)-5-bromobenzamide;

3-({1-[bis(4-chlorophenyl)methyl]azetidin-3-yl}methanesulphonylamino)-N—((S)-1-carbamoyl-2-methylpropyl)-5-bromobenzamide;

3-({1-[bis(4-chlorophenyl)methyl]azetidin-3-yl}methanesulphonylamino)-N—((S)-1-methylcarbamoylethyl)-5-bromobenzamide;

3-({1-[bis(4-chlorophenyl)methyl]azetidin-3-yl}methanesulphonylamino)-N—((S)-1-carbamoyl-2-hydroxyethyl)-5-bromobenzamide;

3-({1-[bis(4-chlorophenyl)methyl]azetidin-3-yl}methanesulphonylamino)-N-carbamoylmethyl-5-trifluoromethylbenzamide;

3-({1-[bis(4-chlorophenyl)methyl]azetidin-3-yl}methanesulphonylamino)-N—((S)-1-carbamoylethyl)-5-trifluoromethylbenzamide;

3-({1-[bis(4-chlorophenyl)methyl]azetidin-3-yl}methanesulphonylamino)-N—((S)-1-carbamoylpropyl)-5-trifluoromethylbenzamide;

3-({1-[bis(4-chlorophenyl)methyl]azetidin-3-yl}methanesulphonylamino)-N—((S)-1-carbamoyl-2-methylpropyl)-5-trifluoromethylbenzamide;

3-({1-[bis(4-chlorophenyl)methyl]azetidin-3-yl}methanesulphonylamino)-N—((S)-1-methylcarbamoylethyl)-5-trifluoromethylbenzamide;

3-({1-[bis(4-chlorophenyl)methyl]azetidin-3-yl}methanesulphonylamino)-N—((S)-1-carbamoyl-2-hydroxyethyl)-5-trifluoromethylbenzamide;

3-({1-[bis(4-chlorophenyl)methyl]azetidin-3-yl}methanesulphonylamino)-N—((S)-1-carbamoylethyl)-5-cyanobenzamide;

3-({1-[bis(4-chlorophenyl)methyl]azetidin-3-yl}methanesulphonylamino)-N—((S)-1-carbamoylpropyl)-5-cyanobenzamide;

3-({1-[bis(4-chlorophenyl)methyl]azetidin-3-yl}methanesulphonylamino)-N—((S)-1-carbamoyl-2-methylpropyl)-5-cyanobenzamide;

3-({1-[bis(4-chlorophenyl)methyl]azetidin-3-yl}methanesulphonylamino)-N—((S)-1-methylcarbamoylethyl)-5-cyanobenzamide;

3-({1-[bis(4-chlorophenyl)methyl]azetidin-3-yl}methanesulphonylamino)-N—((S)-1-carbamoyl-2-hydroxyethyl)-5-cyanobenzamide;

(S)-2-[3-({1-[bis(4-chlorophenyl)methyl]azetidin-3-yl}methanesulphonylamino)-6-fluorobenzoylamino]propionic acid and the trifluoroacetic acid salt thereof;

(S)-2-[3-({1-[bis(4-chlorophenyl)methyl]azetidin-3-yl}methanesulphonylamino)-5-methylbenzoylamino]propionic acid and the trifluoroacetic acid salt thereof;

(S)-2-[3-({1-[bis(4-chlorophenyl)methyl]azetidin-3-yl}methanesulphonylamino)-5-chlorobenzoylamino]propionic acid and the trifluoroacetic acid salt thereof;

(S)-2-[3-({1-[bis(4-chlorophenyl)methyl]azetidin-3-yl}methanesulphonylamino)-5-bromobenzoylamino]propionic acid and the trifluoroacetic acid salt thereof;

(S)-2-[3-({1-[bis(4-chlorophenyl)methyl]azetidin-3-yl}methanesulphonylamino)-3-trifluoromethylbenzoylamino]propionic acid and the trifluoroacetic acid salt thereof;

(S)-2-[3-({1-[bis(4-chlorophenyl)methyl]azetidin-3-yl}methanesulphonylamino)-5-cyanobenzoylamino]propionic acid and the trifluoroacetic acid salt thereof;

3-({1-[bis(4-bromophenyl)methyl]azetidin-3-yl}methanesulphonylamino)-N—((S)-1-carbamoylethyl)-5-fluorobenzamide;

3-({1-[bis(4-trifluoromethylphenyl)methyl]azetidin-3-yl}methanesulphonylamino)-N—((S)-1-carbamoylethyl)-5-fluorobenzamide;

3-({1-[bis(4-cyanophenyl)methyl]azetidin-3-yl}methanesulphonylamino)-N—((S)-1-carbamoylethyl)-5-fluorobenzamide;

3-({1-[bis(4-methoxyphenyl)methyl]azetidin-3-yl}methanesulphonylamino)-N—((S)-1-carbamoylethyl)-5-fluorobenzamide;

3-({1-[bis(4-fluorophenyl)methyl]azetidin-3-yl}methanesulphonylamino)-N—((S)-1-carbamoylethyl)-5-fluorobenzamide;

(S)-2-[3-({1-[bis(4-chlorophenyl)methyl]azetidin-3-yl}methanesulphonylamino)-5-fluorobenzoylamino]propionic acid methyl ester;

3-({1-[bis(4-methylphenyl)methyl]azetidin-3-yl}methanesulphonylamino)-N—((S)-1-carbamoylpropyl)-5-fluorobenzamide;

3-({1-[bis(4-bromophenyl)methyl]azetidin-3-yl}methanesulphonylamino)-N—((S)-1-methylcarbamoylethyl)-5-fluorobenzamide;

(S)-2-[3-({1-[bis(4-bromophenyl)methyl]azetidin-3-yl}methanesulphonylamino)-5-fluorobenzoylamino]propionic acid;

(S)-2-[3-({1-[bis(4-chlorophenyl)methyl]azetidin-3-yl}methanesulphonylamino)-5-fluorobenzoylamino]propionic acid ethyl ester and 3-({1-[bis(4-trifluoromethoxyphenyl)methyl]azetidin-3-yl}methanesulphonylamino)-N—((S)-1-carbamoylpropyl)-5-fluorobenzamide.

7. A pharmaceutical composition comprising a compound of formula (I) according to claim 1 .

8. A pharmaceutical composition comprising a compound of formula (I) according to claim 1 or a pharmaceutically acceptable salt thereof and at least one pharmaceutically acceptable excipient.

9. A process for preparing compounds of formula (I), according to claim 1 , for which R′ is NR4R5, comprising reacting a compound of formula (5),

in which R, R6, R7 and Y are as defined in claim 1 with a compound of formula (6),

in which R1, R2, R3, R4, R5, A and B are as defined in claim 1 ;

in an inert solvent, in the presence of a coupling agent and optionally in the presence of an additive for preventing racemization forming a product which is isolated and optionally converted to an addition salt with an acid.

10. A process for preparing compounds of formula (I), according to claim 1 , for which R′ is OR8, comprising reacting a compound of formula (5):

in which R, R6, R7 and Y are as defined in claim 1 with a compound of formula (7):

in which R1, R2, R3, R8, A and B are as defined in claim 1 ,

are reacted in an inert solvent, in the presence of a coupling agent and optionally in the presence of an additive for preventing racemization, forming a product which is isolated and optionally converted to an addition salt with an acid.

11. A process for preparing compounds of formula (I), according to claim 1 for which R′ is OR8 and R8 is H, comprising hydrolyzing the OR8 function of the compounds of claim 1 wherein R8 is selected from the group consisting of a (C 1 -C 6 )alkyl group, a halo(C 1 -C 6 )alkyl group, an allyl group and a phenyl(C 1 -C 6 )alkyl group, the phenyl group being optionally substituted with 1 or 2 O-methyl groups forming a hydrolyzed product which is isolated and optionally converted to an addition salt with a base.

12. A process for preparing compounds of formula (I), according to claim 1 for which R′ is NR4R5, comprising reacting a compound of formula (I) for which R′ is OR8 and R8 is H with an amino derivative: HNR4R5, in which R4 and R5 are as defined in claim 1 , are reacted in an inert solvent, in the presence of a coupling agent and optionally in the presence of an additive for preventing racemization and the product is isolated and optionally converted to an addition salt with an acid.

13. A process for preparing compounds of formula (5):

for which Y, R, R6 and R7 are as defined in claim 1 , by hydrolysis of the ester function of the compounds of formula (4):

for which Y, R, R6 and R7 are as defined in claim 1 and R″ is a (C 1 -C 6 )alkyl group, a halo(C 1 -C 6 )alkyl group, an allyl group or a phenyl(C 1 -C 6 )alkyl group, the phenyl group being optionally substituted with 1 or 2 O-methyl groups.