Patent ID: 7153852

Claim:
An indole compound represented by formula (I): wherein R represents —COR 1 , R 1 represents a hydroxyl group or C1–6 alkoxy group, R 2 represents a hydrogen atom, C1–6 alkyl, C1–6 alkoxy, C2–6 alkoxyalkyl, a halogen atom, trihalomethyl, cyano, hydroxyl, benzyl, or 4-methoxybenzyl group, R 3 represents a hydrogen atom, C1–6 alkyl, C1–6 alkoxy, a halogen atom, trihalomethyl, cyano, or hydroxyl group, R 4 and R 5 each represents a hydrogen atom, C1–6 alkyl, C1–6 alkoxy, C2–6 alkoxyalkyl group, a halogen atom, trihalomethyl, cyano or hydroxyl group, D represents a single bond, C1–6 alkylene, C2–6 alkenylene, or C1–6 oxyalkylene group, G represents C1–6 alkylene linking group where one linking carbon atom may be replaced by 1 oxygen atom or C2–6 alkenylene linking group where one linking carbon atom may be replaced by 1 oxygen atom, wherein the alkylene and alkenylene groups may be substituted by hydroxyl or C1–4 alkoxy group, R 6 represents a heterocycle selected from the group consisting of 3,4-dihydro-1,4-benzoxazin-2-yl group, 1,4-benzodioxan-2-yl group, 2,3-dihydrobenzofuran-2-yl group, 2,3-dihydro-benzofuran-3-yl group or an indolin-2-yl group which may be substituted by 1 to 5 group(s) selected from the group consisting of C1–6 alkyl, a halogen atom, hydroxyl, trihalomethyl, phenyl, C2–6 acyl, and cyano group, n represents 1 to 3, m represents 1 to 3, i represents 1 to 4, represents a single bond or a double bond, or non-toxic salts thereof.