Aryl-n-aryl derivatives for treating a rna virus infection

A compound of formula (Ic):

• wherein:
• ring and
• ring independently mean a phenylene or a pyridylene group,
• Z″ represents a —CH2— group or a —CO— group,
• Rg and Rh independently represent a hydrogen atom or a (C1-C4)alkyl group,
• X2 represents
• a —CO—NRk— group, wherein Rk represents a hydrogen atom or a methyl group,
• a —NH—CO—NH— group,
• a —OCH2— group,
• a —CH(OH)— group,
• a —NH—CO— group
• a —O— group,
• a —O—(CH2)s—O—, wherein s is 2 or 3,
• a —CO— group,
• a —SO2— group,
• a divalent 5-membered heteroaromatic ring comprising 1, 2, 3 or 4 heteroatoms,
• a NH—SO2—,
• a —NH— group,
• or
• a —SO2—NH— group,
• n is 0, 1, 2 or 3,
• m and m′ are independently 0, 1 or 2,
• Y2 represents
• a hydrogen atom,
• a halogen atom,
• a hydroxyl group,
• a (C1-C4)alkoxy group,
• a
• wherein Rf represents a (C1-C4)alkyl group, a cyano group,
• a
• group,
• a
• group, wherein Rq and R′q independently represent a hydrogen atom or a methyl group,
• a morpholinyl group, optionally substituted by a (C1-C4)alkyl group,
• a piperazinyl group,
• a piperidinyl group,
• or
• a —CR1R2R3 group, wherein R1, R2 and R3 independently represent a hydrogen atom, a fluorine atom or a (C1-C4)alkyl group, said (C1-C4)alkyl group being optionally substituted by a trifluoromethyl group and/or optionally substituted by a hydroxyl group, being understood that no more than one of R1, R2 and R3 is a hydrogen atom, or R1 and R2 form together with the carbon atom bearing them a (C3-C8)cycloalkyl group, said (C3-C8)cycloalkyl group being optionally substituted by one or two (C1-C4)alkyl group, halogen atom, hydroxy or (C1-C4)alkoxy group and said (C3-C8)cycloalkyl group being optionally interrupted on said R1 and/or R2 by one or two oxygen atom(s),
• R and R′ independently represent
• a (C1-C4)alkyl group, optionally interrupted by a —SO2— group or a —SO— group,
• a (C3-C6)cycloalkyl group,
• a trifluoromethyl group,
• a halogen atom,
• a (C1-C5)alkoxy group,
• a —SO2—NRaRb group,
• a —SO3H group,
• a —OH group,
• a —O—SO2—ORc group, or
• a —O—P(═O)—(ORc)(ORd) group,
• Ra, Rb, Rc and Rd independently represent a hydrogen atom or a (C1-C4)alkyl group,
• or any of its pharmaceutically acceptable salt.