The present invention relates to compounds of Formula (I) inhibiting indoleamine 2,3-dioxygenase (IDO) and/or tryptophan 2,3-dioxygenase (TDO) enzymes. Further, their synthesis and their use as medicaments in inter alia cancer is disclosed.本發明係關於抑制吲哚胺2,3-二氧酶(IDO)及/或色胺酸2,3-二氧酶(TDO)之式(I)化合物。此外,揭示其合成及其在尤其癌症中作為藥劑之用途。