Patent ID: 8410087

Claim:
A compound represented by the formula (I): wherein R 1 is a hydrogen atom or a halogen atom; R 2 is a group represented by wherein R 6 is a substituted C 1-6 alkyl group; and R 7 , R 21 and R 22 are each independently a hydrogen atom, an optionally substituted hydrocarbon group, a cyano group or an acyl group, or R 6 and R 7 in combination form an optionally substituted ring; W is O or NR 8 wherein R 8 is a hydrogen atom, an optionally substituted C 1-6 alkyl group or an optionally substituted C 3-10 cyclo alkyl group; R 3 is an optionally substituted heterocyclic group or an optionally substituted C 6-14 aryl group; R 10 is an optionally substituted C 1-6 alkyl group or an optionally substituted C 1-6 alkoxy group; and R 9 , and R 11 are each independently a hydrogen atom, a halogen atom, an optionally substituted C 1-6 alkyl group or an optionally substituted C 1 - 6 alkoxy group, or a salt thereof.