abstract |
The present invention is directed to modulators of indoleamine 2,3-dioxygenase (IDO), as well as compositions and pharmaceutical methods thereof. In one embodiment, the invention relates to a compound: (see above formula) wherein X1, X2, W, R2, R3a, R3b, R5, R5b, a, b, m, n and p are defined in the specification, or a pharmaceutically acceptable salt thereof. |