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    首页 分子通 按分子结构分类 有机化合物 有机杂环化合物 吡咯烷类

    吡咯烷类

    中文名称 英文名称 CAS号 化学式 结构式图片
    —— 5-amino-2-[(2R)-2-methylpyrrolidin-1-yl]benzonitrile —— C12H15N3
    5-amino-2-[(2R)-2-methylpyrrolidin-1-yl]benzonitrile
    —— 1-(4-ethoxyphenyl)-N-[3-[methyl(phenyl)sulfamoyl]phenyl]-5-oxopyrrolidine-3-carboxamide —— C26H27N3O5S
    1-(4-ethoxyphenyl)-N-[3-[methyl(phenyl)sulfamoyl]phenyl]-5-oxopyrrolidine-3-carboxamide
    —— N-[(2,3-dichlorophenyl)methyl]-N-methyl-1-(4-methylphenyl)-5-oxopyrrolidine-3-carboxamide —— C20H20Cl2N2O2
    N-[(2,3-dichlorophenyl)methyl]-N-methyl-1-(4-methylphenyl)-5-oxopyrrolidine-3-carboxamide
    —— 1-(3-Chloro-4-methoxyphenyl)-3-[4-(3,4-dichlorophenyl)sulfonylpiperazin-1-yl]pyrrolidine-2,5-dione —— C21H20Cl3N3O5S
    1-(3-Chloro-4-methoxyphenyl)-3-[4-(3,4-dichlorophenyl)sulfonylpiperazin-1-yl]pyrrolidine-2,5-dione
    —— 5-[Tert-butyl(dimethyl)silyl]oxy-2,4a,5,6-tetrahydropyrrolo[1,2-b]oxazin-7-one —— C13H23NO3Si
    5-[Tert-butyl(dimethyl)silyl]oxy-2,4a,5,6-tetrahydropyrrolo[1,2-b]oxazin-7-one
    —— 3-(2-Chloroethyl)-4,8-dimethyl-6-phenyl-4,4a,7a,8-tetrahydropyrrolo[3,4-f][1,3]benzoxazole-2,5,7-trione —— C19H19ClN2O4
    3-(2-Chloroethyl)-4,8-dimethyl-6-phenyl-4,4a,7a,8-tetrahydropyrrolo[3,4-f][1,3]benzoxazole-2,5,7-trione
    —— 1-Methyl-3,5-diphenyl-3-azabicyclo[3.2.0]heptane-2,4,6-trione —— C19H15NO3
    1-Methyl-3,5-diphenyl-3-azabicyclo[3.2.0]heptane-2,4,6-trione
    —— ethyl 4-[[1-[2-(diethylamino)ethyl]-4,5-dioxo-2-phenylpyrrolidin-3-ylidene]-hydroxymethyl]-3,5-dimethyl-1H-pyrrole-2-carboxylate —— C26H33N3O5
    ethyl 4-[[1-[2-(diethylamino)ethyl]-4,5-dioxo-2-phenylpyrrolidin-3-ylidene]-hydroxymethyl]-3,5-dimethyl-1H-pyrrole-2-carboxylate
    —— ethyl 4-[[1-[3-(diethylamino)propyl]-2-(4-ethoxyphenyl)-4,5-dioxopyrrolidin-3-ylidene]-hydroxymethyl]-3,5-dimethyl-1H-pyrrole-2-carboxylate —— C29H39N3O6
    ethyl 4-[[1-[3-(diethylamino)propyl]-2-(4-ethoxyphenyl)-4,5-dioxopyrrolidin-3-ylidene]-hydroxymethyl]-3,5-dimethyl-1H-pyrrole-2-carboxylate
    —— 4-[1,3-Benzodioxol-5-yl(hydroxy)methylidene]-5-(3-bromophenyl)-1-[3-(dimethylamino)propyl]pyrrolidine-2,3-dione —— C23H23BrN2O5
    4-[1,3-Benzodioxol-5-yl(hydroxy)methylidene]-5-(3-bromophenyl)-1-[3-(dimethylamino)propyl]pyrrolidine-2,3-dione
    —— ethyl 4-[[2-(3-chlorophenyl)-1-(2-morpholin-4-ylethyl)-4,5-dioxopyrrolidin-3-ylidene]-hydroxymethyl]-3,5-dimethyl-1H-pyrrole-2-carboxylate —— C26H30ClN3O6
    ethyl 4-[[2-(3-chlorophenyl)-1-(2-morpholin-4-ylethyl)-4,5-dioxopyrrolidin-3-ylidene]-hydroxymethyl]-3,5-dimethyl-1H-pyrrole-2-carboxylate
    —— ethyl 4-[[1-[2-(diethylamino)ethyl]-2-(4-methoxyphenyl)-4,5-dioxopyrrolidin-3-ylidene]-hydroxymethyl]-3,5-dimethyl-1H-pyrrole-2-carboxylate —— C27H35N3O6
    ethyl 4-[[1-[2-(diethylamino)ethyl]-2-(4-methoxyphenyl)-4,5-dioxopyrrolidin-3-ylidene]-hydroxymethyl]-3,5-dimethyl-1H-pyrrole-2-carboxylate
    —— ethyl 4-[hydroxy-[1-(2-morpholin-4-ylethyl)-4,5-dioxo-2-(4-propan-2-ylphenyl)pyrrolidin-3-ylidene]methyl]-3,5-dimethyl-1H-pyrrole-2-carboxylate —— C29H37N3O6
    ethyl 4-[hydroxy-[1-(2-morpholin-4-ylethyl)-4,5-dioxo-2-(4-propan-2-ylphenyl)pyrrolidin-3-ylidene]methyl]-3,5-dimethyl-1H-pyrrole-2-carboxylate
    —— ethyl 4-[[1-[3-(diethylamino)propyl]-2-(2,3-dimethoxyphenyl)-4,5-dioxopyrrolidin-3-ylidene]-hydroxymethyl]-3,5-dimethyl-1H-pyrrole-2-carboxylate —— C29H39N3O7
    ethyl 4-[[1-[3-(diethylamino)propyl]-2-(2,3-dimethoxyphenyl)-4,5-dioxopyrrolidin-3-ylidene]-hydroxymethyl]-3,5-dimethyl-1H-pyrrole-2-carboxylate
    —— ethyl 4-[[1-[3-(diethylamino)propyl]-4,5-dioxo-2-phenylpyrrolidin-3-ylidene]-hydroxymethyl]-3,5-dimethyl-1H-pyrrole-2-carboxylate —— C27H35N3O5
    ethyl 4-[[1-[3-(diethylamino)propyl]-4,5-dioxo-2-phenylpyrrolidin-3-ylidene]-hydroxymethyl]-3,5-dimethyl-1H-pyrrole-2-carboxylate
    —— ethyl 4-[[1-[2-(diethylamino)ethyl]-2-(3-fluorophenyl)-4,5-dioxopyrrolidin-3-ylidene]-hydroxymethyl]-3,5-dimethyl-1H-pyrrole-2-carboxylate —— C26H32FN3O5
    ethyl 4-[[1-[2-(diethylamino)ethyl]-2-(3-fluorophenyl)-4,5-dioxopyrrolidin-3-ylidene]-hydroxymethyl]-3,5-dimethyl-1H-pyrrole-2-carboxylate
    —— ethyl 4-[[1-[2-(diethylamino)ethyl]-2-(3-nitrophenyl)-4,5-dioxopyrrolidin-3-ylidene]-hydroxymethyl]-3,5-dimethyl-1H-pyrrole-2-carboxylate —— C26H32N4O7
    ethyl 4-[[1-[2-(diethylamino)ethyl]-2-(3-nitrophenyl)-4,5-dioxopyrrolidin-3-ylidene]-hydroxymethyl]-3,5-dimethyl-1H-pyrrole-2-carboxylate
    —— ethyl 4-[[2-(4-bromophenyl)-1-[2-(diethylamino)ethyl]-4,5-dioxopyrrolidin-3-ylidene]-hydroxymethyl]-3,5-dimethyl-1H-pyrrole-2-carboxylate —— C26H32BrN3O5
    ethyl 4-[[2-(4-bromophenyl)-1-[2-(diethylamino)ethyl]-4,5-dioxopyrrolidin-3-ylidene]-hydroxymethyl]-3,5-dimethyl-1H-pyrrole-2-carboxylate
    —— ethyl 4-[[1-[2-(diethylamino)ethyl]-2-(4-methylphenyl)-4,5-dioxopyrrolidin-3-ylidene]-hydroxymethyl]-3,5-dimethyl-1H-pyrrole-2-carboxylate —— C27H35N3O5
    ethyl 4-[[1-[2-(diethylamino)ethyl]-2-(4-methylphenyl)-4,5-dioxopyrrolidin-3-ylidene]-hydroxymethyl]-3,5-dimethyl-1H-pyrrole-2-carboxylate
    —— ethyl 4-[[2-(3-chlorophenyl)-1-[3-(diethylamino)propyl]-4,5-dioxopyrrolidin-3-ylidene]-hydroxymethyl]-3,5-dimethyl-1H-pyrrole-2-carboxylate —— C27H34ClN3O5
    ethyl 4-[[2-(3-chlorophenyl)-1-[3-(diethylamino)propyl]-4,5-dioxopyrrolidin-3-ylidene]-hydroxymethyl]-3,5-dimethyl-1H-pyrrole-2-carboxylate
    —— ethyl 4-[[2-(2-fluorophenyl)-1-(2-morpholin-4-ylethyl)-4,5-dioxopyrrolidin-3-ylidene]-hydroxymethyl]-3,5-dimethyl-1H-pyrrole-2-carboxylate —— C26H30FN3O6
    ethyl 4-[[2-(2-fluorophenyl)-1-(2-morpholin-4-ylethyl)-4,5-dioxopyrrolidin-3-ylidene]-hydroxymethyl]-3,5-dimethyl-1H-pyrrole-2-carboxylate
    —— ethyl 4-[[1-[3-(diethylamino)propyl]-4,5-dioxo-2-(4-prop-2-enoxyphenyl)pyrrolidin-3-ylidene]-hydroxymethyl]-3,5-dimethyl-1H-pyrrole-2-carboxylate —— C30H39N3O6
    ethyl 4-[[1-[3-(diethylamino)propyl]-4,5-dioxo-2-(4-prop-2-enoxyphenyl)pyrrolidin-3-ylidene]-hydroxymethyl]-3,5-dimethyl-1H-pyrrole-2-carboxylate
    —— ethyl 4-[hydroxy-[2-(3-methoxyphenyl)-1-(2-morpholin-4-ylethyl)-4,5-dioxopyrrolidin-3-ylidene]methyl]-3,5-dimethyl-1H-pyrrole-2-carboxylate —— C27H33N3O7
    ethyl 4-[hydroxy-[2-(3-methoxyphenyl)-1-(2-morpholin-4-ylethyl)-4,5-dioxopyrrolidin-3-ylidene]methyl]-3,5-dimethyl-1H-pyrrole-2-carboxylate
    —— ethyl 4-[[2-(3-fluorophenyl)-1-(2-morpholin-4-ylethyl)-4,5-dioxopyrrolidin-3-ylidene]-hydroxymethyl]-3,5-dimethyl-1H-pyrrole-2-carboxylate —— C26H30FN3O6
    ethyl 4-[[2-(3-fluorophenyl)-1-(2-morpholin-4-ylethyl)-4,5-dioxopyrrolidin-3-ylidene]-hydroxymethyl]-3,5-dimethyl-1H-pyrrole-2-carboxylate
    —— ethyl 4-[[1-[2-(diethylamino)ethyl]-4,5-dioxo-2-(4-propan-2-ylphenyl)pyrrolidin-3-ylidene]-hydroxymethyl]-3,5-dimethyl-1H-pyrrole-2-carboxylate —— C29H39N3O5
    ethyl 4-[[1-[2-(diethylamino)ethyl]-4,5-dioxo-2-(4-propan-2-ylphenyl)pyrrolidin-3-ylidene]-hydroxymethyl]-3,5-dimethyl-1H-pyrrole-2-carboxylate
    —— 4-[1,3-Benzodioxol-5-yl(hydroxy)methylidene]-5-(4-propan-2-ylphenyl)-1-(pyridin-3-ylmethyl)pyrrolidine-2,3-dione —— C27H24N2O5
    4-[1,3-Benzodioxol-5-yl(hydroxy)methylidene]-5-(4-propan-2-ylphenyl)-1-(pyridin-3-ylmethyl)pyrrolidine-2,3-dione
    —— ethyl 4-[hydroxy-[1-(2-morpholin-4-ylethyl)-2-(4-nitrophenyl)-4,5-dioxopyrrolidin-3-ylidene]methyl]-3,5-dimethyl-1H-pyrrole-2-carboxylate —— C26H30N4O8
    ethyl 4-[hydroxy-[1-(2-morpholin-4-ylethyl)-2-(4-nitrophenyl)-4,5-dioxopyrrolidin-3-ylidene]methyl]-3,5-dimethyl-1H-pyrrole-2-carboxylate
    —— ethyl 4-[[2-(4-tert-butylphenyl)-1-[2-(diethylamino)ethyl]-4,5-dioxopyrrolidin-3-ylidene]-hydroxymethyl]-3,5-dimethyl-1H-pyrrole-2-carboxylate —— C30H41N3O5
    ethyl 4-[[2-(4-tert-butylphenyl)-1-[2-(diethylamino)ethyl]-4,5-dioxopyrrolidin-3-ylidene]-hydroxymethyl]-3,5-dimethyl-1H-pyrrole-2-carboxylate
    —— ethyl 4-[hydroxy-[1-(2-morpholin-4-ylethyl)-4,5-dioxo-2-(3-prop-2-enoxyphenyl)pyrrolidin-3-ylidene]methyl]-3,5-dimethyl-1H-pyrrole-2-carboxylate —— C29H35N3O7
    ethyl 4-[hydroxy-[1-(2-morpholin-4-ylethyl)-4,5-dioxo-2-(3-prop-2-enoxyphenyl)pyrrolidin-3-ylidene]methyl]-3,5-dimethyl-1H-pyrrole-2-carboxylate
    —— ethyl 4-[[1-[3-(diethylamino)propyl]-2-(3-methoxyphenyl)-4,5-dioxopyrrolidin-3-ylidene]-hydroxymethyl]-3,5-dimethyl-1H-pyrrole-2-carboxylate —— C28H37N3O6
    ethyl 4-[[1-[3-(diethylamino)propyl]-2-(3-methoxyphenyl)-4,5-dioxopyrrolidin-3-ylidene]-hydroxymethyl]-3,5-dimethyl-1H-pyrrole-2-carboxylate
    —— ethyl 4-[[2-(3,4-dimethoxyphenyl)-1-(2-morpholin-4-ylethyl)-4,5-dioxopyrrolidin-3-ylidene]-hydroxymethyl]-3,5-dimethyl-1H-pyrrole-2-carboxylate —— C28H35N3O8
    ethyl 4-[[2-(3,4-dimethoxyphenyl)-1-(2-morpholin-4-ylethyl)-4,5-dioxopyrrolidin-3-ylidene]-hydroxymethyl]-3,5-dimethyl-1H-pyrrole-2-carboxylate
    —— ethyl 4-[[2-(3,4-dichlorophenyl)-1-(2-morpholin-4-ylethyl)-4,5-dioxopyrrolidin-3-ylidene]-hydroxymethyl]-3,5-dimethyl-1H-pyrrole-2-carboxylate —— C26H29Cl2N3O6
    ethyl 4-[[2-(3,4-dichlorophenyl)-1-(2-morpholin-4-ylethyl)-4,5-dioxopyrrolidin-3-ylidene]-hydroxymethyl]-3,5-dimethyl-1H-pyrrole-2-carboxylate
    —— ethyl 4-[hydroxy-[1-(2-morpholin-4-ylethyl)-4,5-dioxo-2-(4-propoxyphenyl)pyrrolidin-3-ylidene]methyl]-3,5-dimethyl-1H-pyrrole-2-carboxylate —— C29H37N3O7
    ethyl 4-[hydroxy-[1-(2-morpholin-4-ylethyl)-4,5-dioxo-2-(4-propoxyphenyl)pyrrolidin-3-ylidene]methyl]-3,5-dimethyl-1H-pyrrole-2-carboxylate
    —— ethyl 4-[[1-[3-(diethylamino)propyl]-2-(4-methoxycarbonylphenyl)-4,5-dioxopyrrolidin-3-ylidene]-hydroxymethyl]-3,5-dimethyl-1H-pyrrole-2-carboxylate —— C29H37N3O7
    ethyl 4-[[1-[3-(diethylamino)propyl]-2-(4-methoxycarbonylphenyl)-4,5-dioxopyrrolidin-3-ylidene]-hydroxymethyl]-3,5-dimethyl-1H-pyrrole-2-carboxylate
    —— ethyl 4-[[2-(4-tert-butylphenyl)-1-[3-(diethylamino)propyl]-4,5-dioxopyrrolidin-3-ylidene]-hydroxymethyl]-3,5-dimethyl-1H-pyrrole-2-carboxylate —— C31H43N3O5
    ethyl 4-[[2-(4-tert-butylphenyl)-1-[3-(diethylamino)propyl]-4,5-dioxopyrrolidin-3-ylidene]-hydroxymethyl]-3,5-dimethyl-1H-pyrrole-2-carboxylate
    —— ethyl 4-[[2-(3-bromophenyl)-1-[3-(diethylamino)propyl]-4,5-dioxopyrrolidin-3-ylidene]-hydroxymethyl]-3,5-dimethyl-1H-pyrrole-2-carboxylate —— C27H34BrN3O5
    ethyl 4-[[2-(3-bromophenyl)-1-[3-(diethylamino)propyl]-4,5-dioxopyrrolidin-3-ylidene]-hydroxymethyl]-3,5-dimethyl-1H-pyrrole-2-carboxylate
    —— 4-[1,3-Benzodioxol-5-yl(hydroxy)methylidene]-5-(3-methoxyphenyl)-1-(pyridin-3-ylmethyl)pyrrolidine-2,3-dione —— C25H20N2O6
    4-[1,3-Benzodioxol-5-yl(hydroxy)methylidene]-5-(3-methoxyphenyl)-1-(pyridin-3-ylmethyl)pyrrolidine-2,3-dione
    —— ethyl 4-[[2-(4-bromophenyl)-1-[3-(diethylamino)propyl]-4,5-dioxopyrrolidin-3-ylidene]-hydroxymethyl]-3,5-dimethyl-1H-pyrrole-2-carboxylate —— C27H34BrN3O5
    ethyl 4-[[2-(4-bromophenyl)-1-[3-(diethylamino)propyl]-4,5-dioxopyrrolidin-3-ylidene]-hydroxymethyl]-3,5-dimethyl-1H-pyrrole-2-carboxylate
    —— ethyl 4-[[1-[3-(diethylamino)propyl]-4,5-dioxo-2-(4-propan-2-ylphenyl)pyrrolidin-3-ylidene]-hydroxymethyl]-3,5-dimethyl-1H-pyrrole-2-carboxylate —— C30H41N3O5
    ethyl 4-[[1-[3-(diethylamino)propyl]-4,5-dioxo-2-(4-propan-2-ylphenyl)pyrrolidin-3-ylidene]-hydroxymethyl]-3,5-dimethyl-1H-pyrrole-2-carboxylate
    —— ethyl 4-[[2-(4-chlorophenyl)-1-[2-(diethylamino)ethyl]-4,5-dioxopyrrolidin-3-ylidene]-hydroxymethyl]-3,5-dimethyl-1H-pyrrole-2-carboxylate —— C26H32ClN3O5
    ethyl 4-[[2-(4-chlorophenyl)-1-[2-(diethylamino)ethyl]-4,5-dioxopyrrolidin-3-ylidene]-hydroxymethyl]-3,5-dimethyl-1H-pyrrole-2-carboxylate
    —— ethyl 4-[[1-[2-(diethylamino)ethyl]-2-(4-methoxycarbonylphenyl)-4,5-dioxopyrrolidin-3-ylidene]-hydroxymethyl]-3,5-dimethyl-1H-pyrrole-2-carboxylate —— C28H35N3O7
    ethyl 4-[[1-[2-(diethylamino)ethyl]-2-(4-methoxycarbonylphenyl)-4,5-dioxopyrrolidin-3-ylidene]-hydroxymethyl]-3,5-dimethyl-1H-pyrrole-2-carboxylate
    —— ethyl 4-[hydroxy-[1-(2-morpholin-4-ylethyl)-2-(3-nitrophenyl)-4,5-dioxopyrrolidin-3-ylidene]methyl]-3,5-dimethyl-1H-pyrrole-2-carboxylate —— C26H30N4O8
    ethyl 4-[hydroxy-[1-(2-morpholin-4-ylethyl)-2-(3-nitrophenyl)-4,5-dioxopyrrolidin-3-ylidene]methyl]-3,5-dimethyl-1H-pyrrole-2-carboxylate
    —— ethyl 4-[[1-[3-(diethylamino)propyl]-2-(4-fluorophenyl)-4,5-dioxopyrrolidin-3-ylidene]-hydroxymethyl]-3,5-dimethyl-1H-pyrrole-2-carboxylate —— C27H34FN3O5
    ethyl 4-[[1-[3-(diethylamino)propyl]-2-(4-fluorophenyl)-4,5-dioxopyrrolidin-3-ylidene]-hydroxymethyl]-3,5-dimethyl-1H-pyrrole-2-carboxylate
    —— ethyl 4-[[1-[2-(diethylamino)ethyl]-2-(4-fluorophenyl)-4,5-dioxopyrrolidin-3-ylidene]-hydroxymethyl]-3,5-dimethyl-1H-pyrrole-2-carboxylate —— C26H32FN3O5
    ethyl 4-[[1-[2-(diethylamino)ethyl]-2-(4-fluorophenyl)-4,5-dioxopyrrolidin-3-ylidene]-hydroxymethyl]-3,5-dimethyl-1H-pyrrole-2-carboxylate
    —— ethyl 4-[[2-(4-tert-butylphenyl)-1-(2-morpholin-4-ylethyl)-4,5-dioxopyrrolidin-3-ylidene]-hydroxymethyl]-3,5-dimethyl-1H-pyrrole-2-carboxylate —— C30H39N3O6
    ethyl 4-[[2-(4-tert-butylphenyl)-1-(2-morpholin-4-ylethyl)-4,5-dioxopyrrolidin-3-ylidene]-hydroxymethyl]-3,5-dimethyl-1H-pyrrole-2-carboxylate
    —— ethyl 4-[hydroxy-[2-(4-methylphenyl)-1-(2-morpholin-4-ylethyl)-4,5-dioxopyrrolidin-3-ylidene]methyl]-3,5-dimethyl-1H-pyrrole-2-carboxylate —— C27H33N3O6
    ethyl 4-[hydroxy-[2-(4-methylphenyl)-1-(2-morpholin-4-ylethyl)-4,5-dioxopyrrolidin-3-ylidene]methyl]-3,5-dimethyl-1H-pyrrole-2-carboxylate
    —— ethyl 4-[[1-[2-(diethylamino)ethyl]-2-(3,4-dimethoxyphenyl)-4,5-dioxopyrrolidin-3-ylidene]-hydroxymethyl]-3,5-dimethyl-1H-pyrrole-2-carboxylate —— C28H37N3O7
    ethyl 4-[[1-[2-(diethylamino)ethyl]-2-(3,4-dimethoxyphenyl)-4,5-dioxopyrrolidin-3-ylidene]-hydroxymethyl]-3,5-dimethyl-1H-pyrrole-2-carboxylate
    —— ethyl 4-[[1-[2-(diethylamino)ethyl]-4,5-dioxo-2-(3,4,5-trimethoxyphenyl)pyrrolidin-3-ylidene]-hydroxymethyl]-3,5-dimethyl-1H-pyrrole-2-carboxylate —— C29H39N3O8
    ethyl 4-[[1-[2-(diethylamino)ethyl]-4,5-dioxo-2-(3,4,5-trimethoxyphenyl)pyrrolidin-3-ylidene]-hydroxymethyl]-3,5-dimethyl-1H-pyrrole-2-carboxylate
    —— ethyl 4-[[2-(2,5-dimethoxyphenyl)-1-(2-morpholin-4-ylethyl)-4,5-dioxopyrrolidin-3-ylidene]-hydroxymethyl]-3,5-dimethyl-1H-pyrrole-2-carboxylate —— C28H35N3O8
    ethyl 4-[[2-(2,5-dimethoxyphenyl)-1-(2-morpholin-4-ylethyl)-4,5-dioxopyrrolidin-3-ylidene]-hydroxymethyl]-3,5-dimethyl-1H-pyrrole-2-carboxylate
    —— 4-[1,3-Benzodioxol-5-yl(hydroxy)methylidene]-5-(4-methylphenyl)-1-(pyridin-3-ylmethyl)pyrrolidine-2,3-dione —— C25H20N2O5
    4-[1,3-Benzodioxol-5-yl(hydroxy)methylidene]-5-(4-methylphenyl)-1-(pyridin-3-ylmethyl)pyrrolidine-2,3-dione