1-(benzenesulfonyl)-3-ethyl-2-methyl-6,7-dihydro-5H-indol-4-one

3-ethyl-6-(hydroxymethyl)-2-methyl-1,5,6,7-tetrahydroindol-4-one

3-ethyl-2-methyl-6-acetoxymethyl-4,5,6,7-tetrahydroindol-4-one

吗茚酮

3-乙基-1,5,6,7-四氢-2-甲基-4H-吲哚-4-酮