Abstract: A compound: wherein X1 represents an alkenylene group, a —NH—CO— group, a —CO—NH— group, Y1 represents an aryl group selected from pyridyl, pyrazinyl or pyrimidinyl, X2 represents —O—, —CO—NH—, —NH—CO—NH—, —OCH2—, —NH—CO—, a divalent 5-membered heteroaromatic ring comprising 1 to 4 heteroatoms or —SO2—NH—, and Y2 represents a hydrogen atom, a hydroxyl group, a morpholinyl group, a piperidinyl group, optionally substituted by a (C1-C4)alkyl group, a piperazinyl group, optionally substituted by a (C1-C4)alkyl group, or —CR1R2R3 or alternatively X2—Y2 represents —CONRcRd, wherein Rc and Rd form, together with the nitrogen atom a heterocyclic ring, optionally substituted by one or two (C1-C4)alkyl group, by a cyclopentyl group thus forming a spirocyclopentyl, or by a trifluoromethyl group, or any of its pharmaceutically acceptable salt, for use in the treatment and/or prevention of a RNA virus infection caused by a RNA virus belonging to group IV or V of the Baltimore classification.

Abstract: A compound of formula (I) is: wherein: X2 represents a —CO—NRk— group, a —NR?k—CO— group, a —O— group, a —CO— group, a —SO2-group, a —CS—NH— group, a —CH2—NH—, a group, or a heterocyclyl, wherein the heterocyclyl is a 5- or 6-membered ring comprising 1, 2, 3 or 4 heteroatoms selected from O, S and/or N; Y2 represents a hydrogen atom, a halogen atom, a hydroxyl group, a morpholinyl group, optionally substituted by a (C1-C4)alkyl group or a trifluoromethyl group, a bridged morpholinyl group, a (C5-C11)bicycloalkyl group, an adamantyl group, a piperidinyl group, a (C1-C4)alkenyl group, a —PO(ORa)(ORb) group, a 5-membered heteroaromatic ring or a —CR1R2R3 group, or any of its pharmaceutically acceptable salt.

Abstract: A compound of formula (Ic) wherein 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—, a —CO— group, a —SO2— group, a divalent 5-membered heteroaromatic ring comprising 1, 2, 3 or 4 heteroatoms, —a NH—SO2— or a —SO2—NH— group; Y2 represents a hydrogen atom, a halogen atom, a hydroxyl group, a (C1-C4)alkoxy group, a a group, a group, a morpholinyl group, optionally substituted by a (C1-C4)alkyl group, a piperazinyl group, a piperidinyl group, or a —CR1R2R3 group, or any of its pharmaceutically acceptable salt.

Abstract: A compound of formula (I) or any of its pharmaceutically acceptable salt for use in the treatment and/or prevention of a RNA virus infection, and a RNA virus infection from group IV or V of the Baltimore classification wherein R3 represents a chlorine atom or a hydrogen atom, R represents a (C1-C4)alkyl group, a (C3-C6)cycloalkyl 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, R1 represents (i) a CF3 group, (ii) a (C1-C10)alkyl group, (iii) a (C3-C6)cycloalkyl or a (C3-C6)heterocycloalkyl group or (iv) a phenyl group or a naphthyl group, and R2 represents a hydrogen atom, a (C1-C10)alkyl group, a (C3-C6)cycloalkyl or a (C3-C6)heterocycloalkyl group and further relates to new compounds, to pharmaceutical compositions containing them and to synthesis process for manufacturing them.

Abstract: A compound: wherein X1 represents an alkenylene group, a —NH—CO— group, a —CO—NH— group, Y1 represents an aryl group selected from pyridyl, pyrazinyl or pyrimidinyl, X2 represents —O—, —CO—NH—, —NH—CO—NH—, —OCH2—, —NH—CO—, a divalent 5-membered heteroaromatic ring comprising 1 to 4 heteroatoms or —SO2—NH—, and Y2 represents a hydrogen atom, a hydroxyl group, a morpholinyl group, a piperidinyl group, optionally substituted by a (C1-C4)alkyl group, a piperazinyl group, optionally substituted by a (C1-C4)alkyl group, or —CR1R2R3 or alternatively X2—Y2 represents —CONRcRd, wherein Rc and Rd form, together with the nitrogen atom a heterocyclic ring, optionally substituted by one or two (C1-C4)alkyl group, by a cyclopentyl group thus forming a spirocyclopentyl, or by a trifluoromethyl group, or any of its pharmaceutically acceptable salt, for use in the treatment and/or prevention of a RNA virus infection caused by a RNA virus belonging to group IV or V of the Baltimore classification.

Abstract: A compound of formula (Ie): wherein Y1 represents an aryl group, X2 represents a —O— group, a —NH— group, a —S— group, a —CO—NH— group, a —NH—CO—NH— group, a —NH—CO— group, a —CH(OH)— group, a —CH(COOH)NH— group, a —CH(COOCH3)NH— group, a —C(OH)(CH2OH)—, a group, a divalent 5-membered heteroaromatic ring comprising 1, 2, 3 or heteroatoms, a —SO2— group, or a —SO2—NH— group, Y2 represents a hydrogen atom, a hydroxyl group, a (C1-C4)alkoxy group, a —CHC(OH)2, a COORf, wherein Rf represents a hydrogen atom or a (C1-C4)alkyl group, a morpholinyl group, a dihydropyranyl group, a group, a group, a —PO(ORf)(OR?f) group, wherein Rf and R?f independently represents a hydrogen atom or a (C1-C4)alkyl group, an oxetanyl group, a —Si(CH3)3 group, a —NHCOO—(C1-C4)alkyl group, or a —CR1R2R3 group, or any of its pharmaceutically acceptable salt and pharmaceutical compositions containing them and to synthesis process for manufacturing them.