US Patent 10035785 Phosphoinositide 3-kinase inhibitors

A compound of formula I: or a pharmaceutically acceptable salt thereof, wherein: R1, R2, R3, R and R6 are each independently (LQ)mY; R4 is H, halogen, optionally substituted aryl or optionally substituted alkyl; and; each X is independently CR7 or N. The compounds are PI3K inhibitors and therefore have potential utility in therapy.