Abstract: Provided is a compound for use in medicine for inhibiting tryptophan-2,3-dioxygenase (TDO) and/or indoleamine-2,3-dioxygenase (IDO), which compound comprises formula (I) wherein X1, X2, and X7, may be the same or different and each is independently selected from C and N; X3, X4, X5, and X6 may be the same or different and each is independently selected from C, N, O and S wherein when X3 is N it has a double bond and wherein when X6 is N it has a double bond; the dotted line is a bond which may be present or absent; R1, R2, R3, R4, R5, R6, and R7 may be present or absent and may be the same or different and each is independently selected from H and a substituted or unsubstituted organic group, provided that at least one of R2, R3, R4 and R6 comprises a group Y; and provided that the number of R1, R2, R3, R4, R5, R6, and R7 groups present is such that the respective valencies of X1, X2, X3, X4, X5, X6, and X7 are maintained; and wherein Y is a group having a formula selected from (II), (III), (IV), (V) wherein

Abstract: Provided is a tryptophan-2,3-dioxygenase (TDO) and/or indoleamine-2,3-dioxygenase (IDO) inhibitor compound for use in medicine, which compound comprises the following formula (I): wherein X1 is selected from C and N; X3 and X5 may be the same or different and each is independently selected from C, N, O and S; Y is selected from N and O; Z is selected from C, N and O; each bond represented by a dotted line may independently be a double bond or a single bond, provided that valencies at each ring atom are maintained and provided that the ring Q contains at least one double bond and provided that the atom N has a double bond; R3 and R5 may be present or absent and may be the same or different and each is independently selected from H and a substituted or unsubstituted organic group, provided that the number of R3 groups present is such that the valency of X3 is maintained, and the number of R5 groups present is such that the valency of X5 is maintained; each R11 and R12 may be present or absent and may be the sam

Abstract: Provided is a tryptophan-2,3-dioxygenase (TDO) and/or indoleamine-2,3-dioxygenase (IDO) inhibitor compound for use in medicine, which compound comprises the following formula: wherein X2, X4, X10, and X11 may be the same or different and each is independently selected from C and N; X1, X3, X5, X6, X7, X8, and X9 may be the same or different and each is independently selected from C, N and O; each bond having a dotted line may independently be a double bond or a single bond, provided that valencies at each atom are maintained; the dotted lines joining X4 with the carbon atoms either side of X2 are single bonds, and are only present when X2 is absent, X3 is absent and X4 is C, and when these bonds are present the ring carbons on each side of X2 are not directly bonded to each other; each R1 may be present or absent and may be the same or different and is selected from H and a substituted or unsubstituted organic group, provided that the number of R1 groups present is such that the valency of X1 is maintaine

Abstract: Provided is a compound for use in medicine for inhibiting tryptophan-2,3-dioxygenase (TDO) and/or indoleamine-2,3-dioxygenase (IDO), which compound comprises formula (I) wherein X1, X2, and X7, may be the same or different and each is independently selected from C and N; X3, X4, X5, and X6 may be the same or different and each is independently selected from C, N, O and S wherein when X3 is N it has a double bond and wherein when X6 is N it has a double bond; the dotted line is a bond which may be present or absent; R1, R2, R3, R4, R5, R6, and R7 may be present or absent and may be the same or different and each is independently selected from H and a substituted or unsubstituted organic group, provided that at least one of R2, R3, R4 and R6 comprises a group Y; and provided that the number of R1, R2, R3, R4, R5, R6, and R7 groups present is such that the respective valencies of X1, X2, X3, X4, X5, X6, and X7 are maintained; and wherein Y is a group having a formula selected from (II), (III), (IV), (V) wherein

Abstract: Provided is a tryptophan-2,3-dioxygenase (TDO) and/or indoleamine-2,3-dioxygenase (IDO) inhibitor compound for use in medicine, which compound comprises the following formula (I): wherein X1 is selected from C and N; X3 and X5 may be the same or different and each is independently selected from C, N, O and S; Y is selected from N and O; Z is selected from C, N and O; each bond represented by a dotted line may independently be a double bond or a single bond, provided that valencies at each ring atom are maintained and provided that the ring Q contains at least one double bond and provided that the atom N has a double bond; R3 and R5 may be present or absent and may be the same or different and each is independently selected from H and a substituted or unsubstituted organic group, provided that the number of R3 groups present is such that the valency of X3 is maintained, and the number of R5 groups present is such that the valency of X5 is maintained; each R11 and R12 may be present or absent and may be the sam

Abstract: Provided is a tryptophan-2,3-dioxygenase (TDO) and/or indoleamine-2,3-dioxygenase (IDO) inhibitor compound for use in medicine, which compound comprises the following formula: wherein X2, X4, X10, and X11 may be the same or different and each is independently selected from C and N; X1, X3, X5, X6, X7, X8, and X9 may be the same or different and each is independently selected from C, N and O; each bond having a dotted line may independently be a double bond or a single bond, provided that valencies at each atom are maintained; the dotted lines joining X4 with the carbon atoms either side of X2 are single bonds, and are only present when X2 is absent, X3 is absent and X4 is C, and when these bonds are present the ring carbons on each side of X2 are not directly bonded to each other; each R1 may be present or absent and may be the same or different and is selected from H and a substituted or unsubstituted organic group, provided that the number of R1 groups present is such that the valency of X1 is maintaine

Abstract: The present invention relates to a 9-azabicyclo[3.3.1]nonane derivative of formula I, wherein each of the substituents is given the definition as set forth in the specification and claims, or a pharmaceutically acceptable salt or solvate thereof. The invention also relates to pharmaceutical compositions comprising said 9-azabicyclo[3.3.1]nonane derivatives and to their use in therapy.