| abstract |
Compounds of formula (I) or a pharmaceutically acceptable salt thereof, wherein: W is O, N-H, N-(C-Calkyl) or S; each X is independently CH or N; R is a 5 to 7-membered saturated or unsaturated, optionally substituted heterocycle containing at least 1 heteroatom selected from N or O; R is (LQ)Y; and each R is independently H, C-C alkyl, aryl or heteroaryl, are surprisingly found to be inhibitors of PI3K-p110δ, and therefore have utility in therapy. |