Quinazoline derivatives as erbB receptor tyrosine kinases

摘要

The invention concerns quinazoline derivatives of the formula (I), wherein each of R¹, R², R³, R⁴, R⁵, R⁶, R⁷, X¹, Q¹, m and n have any of the meanings defined in the description; processes for their preparation, pharmaceutical compositions containing them and their use in the manufacture of a medicament for use as an antiproliferative agent in the prevention or treatment of tumours which are sensitive to inhibition of erbB receptor tyrosine kinases.