Sanofi

Sanofi-aventis

Didier Oustric

Francis Barth

Murielle Rinaldi

Pierre Casellas

Joseph Millan

Malcolm R Bell

Christian Congy

Thomas E D'Ambra

Richard E Philion

Martine Vernhet

Martine Sarran

Tricyclic derivatives of 1-benzylpyrazole-3-carboxylic acidwhich are antagonists of the cannabinoid CBreceptors; their method of preparation and pharmaceutical compositions containing them.

1-benzylpyrazole-3-carboxylic acid tricyclic derivatives as cannabinoid receptor antagonists

The use of human CB.sub.2 receptor-specific agonists of formula (I) or (I') for preparing immunomodulating drugs is disclosed. In formulae (I) and (I'), R.sub.1 is a group selected from --CH.sub.2 CHR.sub.10 NR.sub.6 R.sub.11, --(CH.sub.2).sub.2 NR'.sub.6 R'.sub.11, --CHR.sub.9 CH.sub.2 NR'.sub.6 R'.sub.11, --(CH.sub.2).sub.n Z and --COR.sub.8 ; R'.sub.1 is a --CH.sub.2 CHR.sub.10 NR.sub.6 R.sub.11 or --(CH.sub.2).sub.2 NR'.sub.6 R'.sub.11 group; R.sub.2 and R'.sub.2 are hydrogen, halogen or C.sub.1-4 alkyl; R.sub.3 is hydrogen, C.sub.1-4 alkyl or a group selected from --CH.sub.2 CHR.sub.10 NR.sub.6 R.sub.11, --(CH.sub.2).sub.2 NR'.sub.6 R'.sub.11 and --COR.sub.8 ; R'.sub.3 is a .dbd.CR.sub.6 R.sub.8 group; R.sub.4 has one of the meanings given for R.sub.5 or is a --COR.sub.8 group; R.sub.5 is hydrogen, C.sub.1-4 alkyl, C.sub.1-4 alkoxy, a halogen atom, a CF.sub.3 group, an OCF.sub.3 group or C.sub.1-4 alkylthio; R'.sub.5 has one of the meanings given for R.sub.5 and is in the 5 or 6 position of the indene ring; R.sub.6 is hydrogen or C.sub.1-4 alkyl; R'.sub.6 is C.sub.1-4 alkyl; R.sub.7 has one of the meanings given for R.sub.5 or R.sub.7 and R.sub.9 together form a --Y--CH.sub.2 -- group attached to the indole ring in the 7 position by a group Y; R.sub.8 is phenyl substituted one to four times by a substituent selected from halogen, C.sub.1-4 alkyl or C.sub.1-4 alkoxy; a polycyclic ring selected from naphth-1-yl, naphth-2-yl, 1,2,3,4-tetrahydronaphth-1-yl, 1,2,3,4-tetrahydronaphth-5-yl, anthryl, benzofuryl, benzothien-2-yl, benzothien-3-yl, 2-, 3-, 4- or 8-quinolyl, said polycyclic rings optionally being substituted once or twice by a substituent selected from C.sub.1-4 alkyl, C.sub.1-4 alkoxy, C.sub.1-4 alkylthio, halogen, cyano, hydroxyl, trifluoromethyl and imidazol-1-yl; R.sub.10 and R.sub.11 together are a group selected from --CH.sub.2 --O--CH.sub.2 --CR.sub.12 R.sub.13 -- and --(CH.sub.2).sub.p --CR.sub.12 R.sub.13 --, wherein the carbon atom substituted by R.sub.12 and R.sub.13 is attached to the nitrogen atom; R'.sub.11 is C.sub.1-4 alkyl; or R'.sub.11 and R'.sub.6, taken together with the nitrogen atom to which they are attached, form a group selected from morpholin-4-yl, thiomorpholin-4-yl, piperidin-1-yl and pyrrolidin-1-yl; each of R.sub.12 and R.sub.13 is independently hydrogen or C.sub.1-4 alkyl; n is 2, 3, 4 or 5; p is 2 or 3; Z is a methyl group or a halogen atom; and Y is a methylene group or an oxygen atom.

CB.sub.2 Receptor agonist compounds

3-pyrazolecarboxamide derivatives having cannabinoid receptor affinity

Growing community of inventors

Le Cres, France

Didier Oustric