| 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 X 1 is selected from C and N; X 3 and X 5 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; R 3 and R 5 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 R 3 groups present is such that the valency of X 3 is maintained, and the number of R 5 groups present is such that the valency of X 5 is maintained; each R 11 and R 12 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 R 11 and R 12 groups present is such that the valency of Z is maintained; R 21 is selected from H and a substituted or unsubstituted organic group; R 22 may be present or absent and is selected from H and a substituted or unsubstituted organic group; and Cy is a cyclic organic group. |