A compound represented by the following Formula 1 or a pharmaceutically-acceptable salt thereof: wherein: R 1 and R 2 form a saturated or unsaturated 5- or 6-membered ring together with the nitrogen atom, the ring optionally including one or two additional heteroatoms independently selected from N, O and S, the ring optionally being substituted with one or two COOH, CH 2 OH, OH, B 2, halogen, cyano or C 1-6 alkyl groups/atoms, or one or two carbon atoms of the ring being bonded to an oxygen atom to form a keto group, and the ring optionally being condensed with an aromatic or non-aromatic 5- or 6-membered ring which optionally includes one or two heteroatoms selected from N, O and S; each R 3 is H, or one R 3 is H and the other R 3 is benzyl, monohalogen-, dihalogen-, methyl- or methoxy-substituted benzyl, cyclohexyl, C 1-7 alkyl, COR 7 or COOR 7; R 7 is C 1-15 alkyl, benzyloxy, phenyl, methoxyphenyl, monohalogen- or dihalogen-substituted phenyl, 2-hydroxy-1-phenylethyl, or C 1-20 alkyl substituted with NH 2, NHCO-C 1-15 alkyl or NHCOO-C 1-15 alkyl; R 4 is H or COR 8; R 8 is C 1-6 alkyl; the wavy lines represent bonds connected to carbons having an R or S configuration; the dashed lines represent an optional bond, with the proviso that the ring containing the dashed lines is aromatic; m, n and q are integers independently selected from 0, 1, 2 and 3, with the proviso that the sum of m, n and q is 2 or 3; W, X and Y each independently represent CH, CR 5, CR 6 or a heteroatom selected from N, O and S, with the proviso that when the sum of m, n and q is 2, one or two of W, X and Y is a heteroatom, and when the sum of m, n and q is 3, none or one of W, X and Y is a heteroatom; s is 0, except when X is N, in which case s is 0 or 1; R 5 and R 6 are independently selected from H, halogen, C 1-6 alkyl, halogen-substituted C 1-6 alkyl, C 1-6 alkoxy, C 1-3 thioxy and phenyl, or R 5 and R 6, together with the atoms to which they are attached, form a carbocyclic or heterocyclic ring having 5 or 6 atoms in the ring, 1 to 3 atoms in the heterocyclic ring being heteroatoms independently selected from N, O and S, and the carbocyclic or heterocyclic ring being optionally substituted with 1 to 6 R 9 groups; and each R 9 is independently selected from halogen, C 1-6 alkyl, C 1-6 alkoxy and C 1-3 thioxy; with the proviso that Formula 1 does not cover compounds where R 4 is H, R 1 and R 2 form a pyrrolidino or morpholino ring with the nitrogen atom, the sum of m, n and q is 3, and none of W, X and Y represent a heteroatom. R 1 and R 2 form a saturated or unsaturated 5- or 6-membered ring together with the nitrogen atom, the ring optionally including one or two additional heteroatoms independently selected from N, O and S, the ring optionally being substituted with one or two COOH, CH 2 OH, OH, B 2, halogen, cyano or C 1-6 alkyl groups/atoms, or one or two carbon atoms of the ring being bonded to an oxygen atom to form a keto group, and the ring optionally being condensed with an aromatic or non-aromatic 5- or 6-membered ring which optionally includes one or two heteroatoms selected from N, O and S; each R 3 is H, or one R 3 is H and the other R 3 is benzyl, monohalogen-, dihalogen-, methyl- or methoxy-substituted benzyl, cyclohexyl, C 1-7 alkyl, COR 7 or COOR 7; R 7 is C 1-15 alkyl, benzyloxy, phenyl, methoxyphenyl, monohalogen- or dihalogen-substituted phenyl, 2-hydroxy-1-phenylethyl, or C 1-20 alkyl substituted with NH 2, NHCO-C 1-15 alkyl or NHCOO-C 1-15 alkyl; R 4 is H or COR 8; R 8 is C 1-6 alkyl; the wavy lines represent bonds connected to carbons having an R or S configuration; the dashed lines represent an optional bond, with the proviso that the ring containing the dashed lines is aromatic; m, n and q are integers independently selected from 0, 1, 2 and 3, with the proviso that the sum of m, n and q is 2 or 3; W, X and Y each independently represent CH, CR 5, CR 6 or a heteroatom selected from N, O and S, with the proviso that when the sum of m, n and q is 2, one or two of W, X and Y is a heteroatom, and when the sum of m, n and q is 3, none or one of W, X and Y is a heteroatom; s is 0, except when X is N, in which case s is 0 or 1; R 5 and R 6 are independently selected from H, halogen, C 1-6 alkyl, halogen-substituted C 1-6 alkyl, C 1-6 alkoxy, C 1-3 thioxy and phenyl, or R 5 and R 6, together with the atoms to which they are attached, form a carbocyclic or heterocyclic ring having 5 or 6 atoms in the ring, 1 to 3 atoms in the heterocyclic ring being heteroatoms independently selected from N, O and S, and the carbocyclic or heterocyclic ring being optionally substituted with 1 to 6 R 9 groups; and each R 9 is independently selected from halogen, C 1-6 alkyl, C 1-6 alkoxy and C 1-3 thioxy; with the proviso that Formula 1 does not cover compounds where R 4 is H, R 1 and R 2 form a pyrrolidino or morpholino ring with the nitrogen atom, the sum of m, n and q is 3, and none of W, X and Y represent a heteroatom.