Patent ID: 7605158

Claim:
A carbamoyl-type benzofuran derivative of the formula [1]: wherein Ring Z is a group of the formula: A is a single bond or a group of the formula: —NH—; Y is a lower alkylene group, a cycloalkanediyl group, a phenyl group or a saturated heterocyclic group; R 4 and R 5 are the same or different and each is a hydrogen atom, an optionally substituted lower alkyl group or an optionally substituted saturated heterocyclic group, or R 4 and R 5 combine together at the ends to form an optionally substituted nitrogen-containing saturated heterocyclic group along with the adjacent nitrogen atom; R 1 is a hydrogen atom, a halogen atom, a lower alkyl group, a lower alkoxy group, a cyano group, or an amino group optionally substituted by 1 to 2 lower alkyl groups; Ring B of the formula: is an optionally substituted benzene ring; and R 3 is a hydrogen atom or a lower alkyl group, or a pharmaceutically acceptable salt thereof.