Benzodiazepine derivatives of formula (Ie) 1 and R 2 is a benzodiazepinyl-containing group of formula (II), and R 8 is H or halo, and R 1 and R 2 The other is H, C3-C6 cycloalkyl, halo, -NHR 9 , benzyl, phenyl, 4-10 membered heterocyclyl and 4-10 membered heteroaryl, where phenyl, heterocyclyl and heteroaryl are unsubstituted or 4-10 membered heterocyclyl (unsubstituted or substituted with OR), as well as C1-C6
alkyl, C1-C6 hydroxyalkyl, C1-C6 haloalkyl, C3-C6 cycloalkyl, halo, -OR, -(CH2) m OR, -NR2, -(CH2) m NR2, -NHR'', -SO m NR2, -SO m R, -SR, nitro, -CO2R, -CN, -CONR2, -NHCOR, -CH2NR 10 R 11 and -NR 10 R 11 each R is independently H or C1-C6
alkyl; R" is C3-C6 cycloalkyl; m is 1 or 2; and R 9 is selected from phenyl and 4- to 10-membered heteroaryl, wherein phenyl and heteroaryl are unsubstituted or substituted with halo; R 10 and R 11 are each independently H or C1-C6
alkyl, or R 10 and R 11together with the N atom to which they are attached form either (a) a
morpholine ring optionally bridged by a —CH— group connecting two ring carbon atoms positioned para to each other, or (b) a spiro group of formula (b) below, wherein ring A is one of the rings of the following structural formulas (I-1), (I-2) and (I-3), wherein Y is selected from O, S, SO and NR, R is as defined above, and R 2 ~R 7 each independently represents H, C1-C6 alkyl, C1-C6 hydroxyalkyl, C3-C6 cycloalkyl, halo, -OR, -CH2OR, -NR2, -CH2NR 12 R 13 , -NRCOOR, -CH2OR, -SO m NR2, -SO m R, -CHSO m R, nitro, -COR, -CN, -CONR, or -NHCOR, R and m are as defined above, and R 12 and R 13 are each independently H, C1-C6 alkyl, benzyl, 4- to 10-membered heterocyclyl, or R 12 and R 13 are taken together with the N atom to which they are attached to form an unsubstituted 4-10 membered heteroaryl or a 4-10 membered heterocyclyl (unsubstituted or substituted with C1-C6 alkyl or halo), or R 2 ~R 7 any two of which form a spiro ring selected from a C3-C6 cycloalkyl spiro ring and a spirooxetane ring of the following structure] and pharmaceutically acceptable salts thereof are inhibitors of RSV and therefore can be used to treat or prevent RSV infection. [Case 1] TIFF2023539985000299.tif4467 [C2] TIFF2023539985000300.tif6375 [3] TIFF2023539985000301.tif4630 [C4] TIFF2023539985000302.tif53147 [Chemical 5] TIFF2023539985000303.tif2630