| abstract |
Quinazoline derivatives represented by general formula (1) or pharmaceutically acceptable salts thereof in said formula R1 is nitro or halogeno; R?2 and R4¿ are each hydrogen, C¿1-4? alkyl, carboxyl, or C2-5 alkoxycarbonyl; R?3¿ is hydrogen, amino, optionally substituted C¿1-4? alkyl, C1-4 alkanoyl, or C2-5 alkoxycarbonyl; W is carbon or nitrogen; and m is 0 to 2. |