| 摘要 |
The invention concerns quinazoline derivatives of the formula: (I); wherein X1, Q1, Z, R1, R2, Y, a and m are as defined in the description, which are erbB tyrosine kinase inhibitors, particularly EGFR tyrosine kinase inhibitors. Also claimed are processes for their preparation; pharmaceutical compositions containing them; and their use as therapeutic agents in the treatment of erbB tyrosine kinase mediated diseases such as cancer.
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