Patent ID: 7067533

Claim:
An aminophenoxyacetamide derivative represented by the following formula (I): wherein: R 1 , R 2 , R 3 and R 4 are, independent from each other, hydrogen atom or lower alkyl group; R 5 R 6 R 7 and R 8 are, independent from each other, hydrogen atom or lower alkyl group; E 1 is group —NR 9 — (in which, R 9 is hydrogen atom or lower alkyl group); E 2 is oxygen atom or group —NR 10 — (in which, R 10 is hydrogen atom or lower alkyl group which may be substituted); Q is a group of —X—Y-Q′, wherein X is a connecting bond, lower alkyl group, lower alkenyl group, or lower alkenyl group; Y is a connecting bond, or a group selected from the groups consisting of C═O, C(═O)NH, NHC(═O), —O—, —S—, CH(OH), —O—CH(OH)— and —O—CH 2 —CH(OH)—, in which hydrogen atom of amido group may be substituted with lower alkyl group; and Q′ is hydrogen atom or a cyclic group selected from the group consisting of phenyl group, pyridily group, quinolyl group, isoquinolyl group, benzothiazole group, benzimidazole group, morpholinyl group, and cyclic hydrocarbon group, wherein one or more of the hydrogen atoms in the cyclic group of Q′ may be substituted; either in the case that E 2 is the group —NR 10 — then X and Y are both connecting bond and Q′ is not hydrogen atom; or in the case that E 2 is the group —O— then all of the groups R 1 , R 2 , R 3 and R 4 are methyl group; or a pharmaceutically acceptable salt thereof.