Patent ID: 6855843

Claim:
A compound of formula [III]: wherein: n is an integer of 1; W is a —CH═CH— group; R 4a is an ester group; R 5 is hydrogen atom, or a substituted or unsubstituted lower alkyl group; R 6 is a phenyl group which has 2-5 substituents selected from the group consisting of: a) a halogen atom, b) a formyl group, c) a hydroxyl group, d) a lower alkoxy group which may be substituted by 1) a carboxy group, 2) a hydroxyl group, 3) a cyano group, 4) a halogen atom, 5) an amino group which may be substituted by a lower alkyl group, 6) a pyridyl group, 7) a phenyl group, 8) a thienyl group, or 9) a lower alkoxy group, e) a lower alkyl group which may be substituted by 1) an amino group which may be substituted by a lower alkyl group, a hydroxy-lower alkyl group, a (lower alkylamino)-lower alkyl group or a phenyl group, 2) a piperidinyl group which may be substituted by a lower alkylenedioxy group, 3) a morpholino group which may be substituted by a lower alkyl group, 4) a thiomorpholino group in which sulfur atom may be oxidized, 5) a piperazinyl group which may be substituted by a lower alkyl group, a hydroxyl-lower alky group, a lower alkanoyl group or a phenyl-lower alkyl group, 6) a pyrrolidinyl group, which may be substituted by oxo group, or 7) an imidazolidinyl group which may be substituted by 1-3 groups selected from the group consisting of a lower alkyl group and oxo group, f) an amino group which may be substituted by 1) a lower alkoxycarbonyl group, 2) a lower alkanesulfonyl group, 3) a carbamoyl group which may be substituted by a lower alkyl group, or a lower alkyl-phenyl group, 4) a lower alkanoyl group, 5) a lower alkyl group,6) a lower alkenyl group, or 7) a thiocarbamoyl group which may be substituted by a lower alkyl group, g) a carbamoyl group which may be substituted by 1) a lower alkyl group, 2) a hydroxy-lower alkyl group, 3) a morpholino-lower alkyl group, 4) a phenyl-lower alkyl group, or 5) a lower alkanesulfonyl group, h) a sulfamoyl group which may be substituted by a lower alkyl group, i) a lower alkenyloxy group, j) a lower alkylenedioxy group, k) a cyano group, l) a lower alkylthio group, and m) a lower alkanesulfonyl group, or a salt thereof.