The invention relates to a compound of formulaor a pharmaceutically acceptable salt thereof, wherein each R1, R2, R3 and R4 is independently selected from H, halogen, -CN, C1-C6 alkyl, halogenated C1-C6 alkyl, -OH, C1-C7 alkoxy, -OCF3, -C(O)-NH2, -C(O)-NHMe, -NH-SO2Me, -NH-SO2Et, -NH-SO2Pr and -NH-SO2iPr； R5 is H； R7 and R61 are selected from H and C1-C6 alkyl； and R65 is a a heterocyclic group selected from pyrazole-1-yl, pyrazole-3-yl, pyrazole-4-yl, pyrazole-5-yl, 1,2,3-triazole-1-yl, 1,2,3-triazole-4-yl, 1,2,3-triazole-5-yl, 1,2,4-triazole-1-yl, 1,2,4-triazole-3-yl, 1,2,4-triazole-5-yl, pyridin-2-yl, pyridin-3-yl, pyridin-4-yl, pyrimidin-2-yl, pyrimidin-4-yl, pyrimidin-5-yl, pyrimidin-6-yl, piperidine-1-yl, piperidine-2-yl, piperidine-3-yl, piperidine-4-yl, oxazol-2-yl, oxazol-4-yl, oxazol-5-yl, isoxazol-3-yl, isoxazol-4-yl, isoxazol-5-yl, tetrazole-1-yl, tetrazole-2-yl and tetrazole-5-yl； each of which is optionally substituted with one to three substituents independently selected from halogen, methyl, ethyl, propyl, C(O)-methyl, -S(O)2-methyl and phenyl； and R63 and R64 together form a 3-6 membered carbocyclic or heterocyclic ring selected from cyclopropyl, cyclobutyl, cyclopentyl, cyclopentenyl, cyclohexyl, cyclohexenyl, aziridinyl, azetidinyl, pyrrolidinyl, piperidinyl, piperazinyl, oxetanyl, tetrahydrofuranyl and tetrahydropyranyl. The invention also relates to a pharmaceutical composition capable of inhibiting indoleamine-2,3-dioxygenase (IDO) and/or tryptophan-2,3-dioxygenase (TDO) activity and comprising said compound or a pharmaceutically acceptable salt thereof together with a pharmaceutically acceptable additive or excipient.Изобретение относится к соединению формулыили его фармацевтически приемлемой соли, в которой каждый из R1, R2, R3 и R4 независимо выбран из H, галогена, -CN, C1-C6 алкила, галогенированного C1-C6 алкила, -OH, C1-C7 алкокси, -OCF3, -C(O)-NH2, -C(O)-NHMe, -NH-SO2Me, -NH-SO2Et, -NH-SO2Pr и -NH-SO2iPr； R5 представляет собой H； R7 и R6
