摘要 |
The invention concerns quinazoline derivatives of formula (I) wherein n is 1, 2 or 3 and each R<2> is independently halogeno; and R<1> is (1-4C)alkoxy-(2-4C)alkylamino; or pharmaceutically-acceptable salts thereof; processes for their preparation, pharmaceutical compositions containing them, and the use of the receptor tyrosine kinase inhibitory properties of the compounds in the treatment of proliferative disease such as cancer.
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