A compound of formula, or a pharmaceutically acceptable salt, hydrate, or solvate thereof: wherein: R 1 is C 1-6 alkyl, C 3-7 cycloalkyl, C 1-6 alkyloxy, -S m -C 1-6 alkyl, C 1-6 fluoroalkyl, C 1-6 fluoroalkyloxy, C 1-6 alkyl-OH, -(CH 2) i -C 1-6 alkyloxy, -(CH 2) j -O-C 1-6 fluoroalkyl, COR a, CN, NO 2, NR 5 R 6, or a halogen atom; R 2 is a hydrogen atom, C 1-6 alkyl, C 3-7 cycloalkyl, C 1-6 alkyloxy, -S n -C 1-6 alkyl, C 1-6 fluoroalkyl, C 1-6 fluoroalkyloxy, C 1-6 alkyl-OH, -(CH 2) k -C 1-6 alkyloxy, -(CH 2) l -O-C 1-6 fluoroalkyl, COR b, CN, NO 2, NR 5' R 6', OH, or a halogen atom; R 3 and R 4 are identical or different and are a hydrogen atom, C 1-12 alkyl, C 3-9 cycloalkyl, C 1-6 fluoroalkyl, -C 1-6 alkyl-OH, -(CH 2) p -C 1-6 alkyloxy, -(CH 2) q -C 3-9 cycloalkyl, -(CH 2) r -C 1-6 fluoroalkyl, or -(CH 2) s -O-C 1-6 fluoroalkyl; and additionally, R 3 and R 4, together with the carbon atom carrying them, may form a C 3-9 cycloalkyl group; R a, and R b are identical or different and are C 1-6 alkyl, C 1-6 alkyloxy, or NR 7 R 8; R 5, R 5', R 6, R 6', R 7, and R 8 are identical or different and are a hydrogen atom, C 1-6 alkyl, C 3-7 cycloalkyl, or -(CH 2) w -C 3-7 cycloalkyl; and additionally, R 5 and R 6, together with the nitrogen atom carrying them, may form a heterocyclyl group; and additionally, R 5' and R 6', together with the nitrogen atom carrying them, may form a heterocyclyl group; and additionally, R 7 and R 8, together with the nitrogen atom carrying them, may form a heterocyclyl group; i, j, k, l, p, q, r, s, and w are different or identical and are 1, 2 or 3; m, and n are different or identical and are 0, 1 or 2; and X is CH or N. R 1 is C 1-6 alkyl, C 3-7 cycloalkyl, C 1-6 alkyloxy, -S m -C 1-6 alkyl, C 1-6 fluoroalkyl, C 1-6 fluoroalkyloxy, C 1-6 alkyl-OH, -(CH 2) i -C 1-6 alkyloxy, -(CH 2) j -O-C 1-6 fluoroalkyl, COR a, CN, NO 2, NR 5 R 6, or a halogen atom; R 2 is a hydrogen atom, C 1-6 alkyl, C 3-7 cycloalkyl, C 1-6 alkyloxy, -S n -C 1-6 alkyl, C 1-6 fluoroalkyl, C 1-6 fluoroalkyloxy, C 1-6 alkyl-OH, -(CH 2) k -C 1-6 alkyloxy, -(CH 2) l -O-C 1-6 fluoroalkyl, COR b, CN, NO 2, NR 5' R 6', OH, or a halogen atom; R 3 and R 4 are identical or different and are a hydrogen atom, C 1-12 alkyl, C 3-9 cycloalkyl, C 1-6 fluoroalkyl, -C 1-6 alkyl-OH, -(CH 2) p -C 1-6 alkyloxy, -(CH 2) q -C 3-9 cycloalkyl, -(CH 2) r -C 1-6 fluoroalkyl, or -(CH 2) s -O-C 1-6 fluoroalkyl; and additionally, R 3 and R 4, together with the carbon atom carrying them, may form a C 3-9 cycloalkyl group; R a, and R b are identical or different and are C 1-6 alkyl, C 1-6 alkyloxy, or NR 7 R 8; R 5, R 5', R 6, R 6', R 7, and R 8 are identical or different and are a hydrogen atom, C 1-6 alkyl, C 3-7 cycloalkyl, or -(CH 2) w -C 3-7 cycloalkyl; and additionally, R 5 and R 6, together with the nitrogen atom carrying them, may form a heterocyclyl group; and additionally, R 5' and R 6', together with the nitrogen atom carrying them, may form a heterocyclyl group; and additionally, R 7 and R 8, together with the nitrogen atom carrying them, may form a heterocyclyl group; i, j, k, l, p, q, r, s, and w are different or identical and are 1, 2 or 3; m, and n are different or identical and are 0, 1 or 2; and X is CH or N.