Patent ID: 8008321

Claim:
A compound of formula I: in which: R, present on the 5, 6, 7 or 8 positions of the imidazo[1,5-a]pyridine, represents a hydrogen atom, a halogen atom, an alkyl radical of 1 to 5 carbon atoms, a hydroxyl radical, an alkoxy radical of 1 to 5 carbon atoms, a —COOR 6 radical or a radical of formula: —NR 4 R 5 —NH—SO 2 -Alk —NH—CO-Alk —NR 6 —CO 2 -Alk —O-Alk-COOR 6 —O-Alk-NR 4 R 5 —O—(CH 2 ) n -Ph —CO—NR 4 R 5 , or —CO—NH—CH(R 7 )—(CH 2 ) m —COOR 6 in which: Alk represents an alkyl radical or an alkylene radical of 1 to 5 carbon atoms, n represents an integer from 1 to 5, m represents an integer from 0 to 4, R 4 and R 5 represent, independently of one another, a hydrogen atom, an alkyl radical of 1 to 5 carbon atoms or a benzyl radical, R 6 represents a hydrogen atom or an alkyl radical of 1 to 5 carbon atoms, R 7 represents a hydrogen atom, an alkyl radical of 1 to 5 carbon atoms or a radical of formula: -Alk-CONR 4 R 5 -Alk-OR 6 -Alk-NR 4 R 5 -Ph, or —CH 2 Ph, and Ph represents a phenyl radical optionally substituted by one or more groups chosen from halogen atoms, alkoxy radicals of 1 to 5 carbon atoms and —COOR 6 radicals where R 6 is as defined above; R 1 represents a hydrogen atom, a halogen atom, a cyano radical, a —COOR 6 radical or a radical of formula: —NR 4 R 5 —NH—SO 2 -Alk —NH—CO—CF 3 —NH—CO-Ph —NH—CO-Alk —NH—CO 2 -Alk —CONR 4 R 5 a phenyl radical optionally substituted by one or more groups chosen from halogen atoms, alkyl radicals of 1 to 5 carbon atoms, alkoxy radicals of 1 to 5 carbon atoms and —COOR 6 radicals, a 5-membered heteroaryl radical comprising a heteroatom chosen from a sulfur atom, an oxygen atom or a nitrogen atom and optionally comprising a second nitrogen atom, said heteroaryl optionally being substituted by one or more groups chosen from halogen atoms, alkyl radicals of 1 to 5 carbon atoms, alkoxy radicals of 1 to 5 carbon atoms and —COOR 6 radicals, or a 6-membered heteroaryl radical comprising 1 or 2 nitrogen atoms and optionally being substituted by one or more groups chosen from halogen atoms, alkyl radicals of 1 to 5 carbon atoms, alkoxy radicals of 1 to 5 carbon atoms and —COOR 6 radicals, in which Alk, Ph, R 4 , R 5 and R 6 are as defined as above; R 2 and R 3 represent, independently of one another, a hydroxyl radical, an alkoxy radical of 1 to 5 carbon atoms, an amino radical, a —COOR 6 radical, a nitro radical or a radical of formula: —NR 4 R 5 —NH—CO-Alk —NH—CO-Ph —NH—CO 2 -Alk —NH—SO 2 -Alk —CO—NR 4 R 5 , or —CO—NHOH in which Alk, Ph, R 4 , R 5 and R 6 are as defined as above; or else R 2 and R 3 together form, with the carbon atoms of the phenyl ring to which they are attached, a 6-membered carbon ring comprising a nitrogen atom and an oxygen heteroatom in the base or salt form.