PHENYL- OR PYRIDYL- PYRROLO[2,3B]PYRAZINE DERIVATIVES USEFUL IN THE TREATMENT OR PREVENTION OF PROLIFERATIVE DISORDERS OR DYSPLASIA

摘要

The invention relates to compounds of formula (I), wherein X1, X2, X3, R1, R2, R2a, R3 have the meaning as cited in the description and the claims. Said compounds are useful as FGFR inhibitors. The invention also relates to pharmaceutical compositions, such compounds for use as medicament, especially in the treatment or prevention of one or more proliferative disorders or dysplasia.