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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
    —— (2R)-2-(bromomethyl)-2-tert-butylpyrrolidine-1-carboxylic acid —— C10H18BrNO2
    (2R)-2-(bromomethyl)-2-tert-butylpyrrolidine-1-carboxylic acid
    —— 5-(4-Butoxy-3-methoxyphenyl)-4-[hydroxy-(4-propoxyphenyl)methylidene]-1-(3-morpholin-4-ylpropyl)pyrrolidine-2,3-dione —— C32H42N2O7
    5-(4-Butoxy-3-methoxyphenyl)-4-[hydroxy-(4-propoxyphenyl)methylidene]-1-(3-morpholin-4-ylpropyl)pyrrolidine-2,3-dione
    —— (2S,4R)-4-fluoropyrrolidine-2-carbonitrile;hydrochloride —— C5H8ClFN2
    (2S,4R)-4-fluoropyrrolidine-2-carbonitrile;hydrochloride
    —— 5-(4-Butoxy-3-methoxyphenyl)-4-[hydroxy(phenyl)methylidene]-1-(3-morpholin-4-ylpropyl)pyrrolidine-2,3-dione —— C29H36N2O6
    5-(4-Butoxy-3-methoxyphenyl)-4-[hydroxy(phenyl)methylidene]-1-(3-morpholin-4-ylpropyl)pyrrolidine-2,3-dione
    —— 5-(4-Butoxy-3-methoxyphenyl)-4-[hydroxy-(4-methoxyphenyl)methylidene]-1-(3-morpholin-4-ylpropyl)pyrrolidine-2,3-dione —— C30H38N2O7
    5-(4-Butoxy-3-methoxyphenyl)-4-[hydroxy-(4-methoxyphenyl)methylidene]-1-(3-morpholin-4-ylpropyl)pyrrolidine-2,3-dione
    —— 4-[Hydroxy-(2-methyl-2,3-dihydro-1-benzofuran-5-yl)methylidene]-1-(3-methoxypropyl)-5-(3-phenylmethoxyphenyl)pyrrolidine-2,3-dione —— C31H31NO6
    4-[Hydroxy-(2-methyl-2,3-dihydro-1-benzofuran-5-yl)methylidene]-1-(3-methoxypropyl)-5-(3-phenylmethoxyphenyl)pyrrolidine-2,3-dione
    —— (2S,4R)-4-Fluoropyrrolidine-2-carbonitrile —— C5H7FN2
    (2S,4R)-4-Fluoropyrrolidine-2-carbonitrile
    —— 1-[5-[(2-Chlorophenyl)methylsulfanyl]-1,3,4-thiadiazol-2-yl]-4-[(2,5-dimethylphenyl)-hydroxymethylidene]-5-(3-methoxyphenyl)pyrrolidine-2,3-dione —— C29H24ClN3O4S2
    1-[5-[(2-Chlorophenyl)methylsulfanyl]-1,3,4-thiadiazol-2-yl]-4-[(2,5-dimethylphenyl)-hydroxymethylidene]-5-(3-methoxyphenyl)pyrrolidine-2,3-dione
    —— 5-(4-Butoxy-3-methoxyphenyl)-1-[5-[(2-chlorophenyl)methylsulfanyl]-1,3,4-thiadiazol-2-yl]-4-[(2,5-dimethylphenyl)-hydroxymethylidene]pyrrolidine-2,3-dione —— C33H32ClN3O5S2
    5-(4-Butoxy-3-methoxyphenyl)-1-[5-[(2-chlorophenyl)methylsulfanyl]-1,3,4-thiadiazol-2-yl]-4-[(2,5-dimethylphenyl)-hydroxymethylidene]pyrrolidine-2,3-dione
    —— 1-[5-[(2-Chlorophenyl)methylsulfanyl]-1,3,4-thiadiazol-2-yl]-4-[(2,5-dimethylphenyl)-hydroxymethylidene]-5-[3-methoxy-4-(3-methylbutoxy)phenyl]pyrrolidine-2,3-dione —— C34H34ClN3O5S2
    1-[5-[(2-Chlorophenyl)methylsulfanyl]-1,3,4-thiadiazol-2-yl]-4-[(2,5-dimethylphenyl)-hydroxymethylidene]-5-[3-methoxy-4-(3-methylbutoxy)phenyl]pyrrolidine-2,3-dione
    —— 5-(4-Butoxyphenyl)-1-[5-[(2-chlorophenyl)methylsulfanyl]-1,3,4-thiadiazol-2-yl]-4-[(2,5-dimethylphenyl)-hydroxymethylidene]pyrrolidine-2,3-dione —— C32H30ClN3O4S2
    5-(4-Butoxyphenyl)-1-[5-[(2-chlorophenyl)methylsulfanyl]-1,3,4-thiadiazol-2-yl]-4-[(2,5-dimethylphenyl)-hydroxymethylidene]pyrrolidine-2,3-dione
    —— 1-[5-[(2-Chlorophenyl)methylsulfanyl]-1,3,4-thiadiazol-2-yl]-4-[(2,5-dimethylphenyl)-hydroxymethylidene]-5-(4-prop-2-enoxyphenyl)pyrrolidine-2,3-dione —— C31H26ClN3O4S2
    1-[5-[(2-Chlorophenyl)methylsulfanyl]-1,3,4-thiadiazol-2-yl]-4-[(2,5-dimethylphenyl)-hydroxymethylidene]-5-(4-prop-2-enoxyphenyl)pyrrolidine-2,3-dione
    —— 2-[4-(1,3-Benzoxazol-2-yl)phenyl]-8-(bromomethyl)-6a,9a-dichloro-6-[5-(hydroxymethyl)furan-2-yl]-3a,4,6,10,10a,10b-hexahydroisoindolo[5,6-e]isoindole-1,3,7,9-tetrone —— C33H24BrCl2N3O7
    2-[4-(1,3-Benzoxazol-2-yl)phenyl]-8-(bromomethyl)-6a,9a-dichloro-6-[5-(hydroxymethyl)furan-2-yl]-3a,4,6,10,10a,10b-hexahydroisoindolo[5,6-e]isoindole-1,3,7,9-tetrone
    —— 11-(4-Chlorophenyl)-13-[[3-chloro-5-(trifluoromethyl)pyridin-2-yl]amino]-4-[2-(6,7-dimethoxy-4-methyl-3-oxoquinoxalin-2-yl)ethyl]-10-[2-(4-hydroxy-3,5-dimethoxyphenyl)ethenyl]-2,4,6,13-tetrazatetracyclo[7.7.0.02,6.011,15]hexadec-8-ene-3,5,12,14-tetrone —— C47H41Cl2F3N8O10
    11-(4-Chlorophenyl)-13-[[3-chloro-5-(trifluoromethyl)pyridin-2-yl]amino]-4-[2-(6,7-dimethoxy-4-methyl-3-oxoquinoxalin-2-yl)ethyl]-10-[2-(4-hydroxy-3,5-dimethoxyphenyl)ethenyl]-2,4,6,13-tetrazatetracyclo[7.7.0.02,6.011,15]hexadec-8-ene-3,5,12,14-tetrone
    —— 5-(3-Ethoxy-4-phenylmethoxyphenyl)-4-[hydroxy-(4-propoxyphenyl)methylidene]-1-(2-morpholin-4-ylethyl)pyrrolidine-2,3-dione —— C35H40N2O7
    5-(3-Ethoxy-4-phenylmethoxyphenyl)-4-[hydroxy-(4-propoxyphenyl)methylidene]-1-(2-morpholin-4-ylethyl)pyrrolidine-2,3-dione
    —— N-(5-chloro-2-pyrrolidin-1-ylphenyl)-2-[[5-(furan-2-yl)-1,3,4-oxadiazol-2-yl]sulfanyl]acetamide —— C18H17ClN4O3S
    N-(5-chloro-2-pyrrolidin-1-ylphenyl)-2-[[5-(furan-2-yl)-1,3,4-oxadiazol-2-yl]sulfanyl]acetamide
    —— 10-(2,5-dimethoxyphenyl)-8-(furan-2-ylcarbonyl)-11a,11b-dihydro-8H-pyrrolo[3',4':3,4]pyrrolo[2,1-a]isoquinoline-9,11(8aH,10H)-dione —— C27H22N2O6
    10-(2,5-dimethoxyphenyl)-8-(furan-2-ylcarbonyl)-11a,11b-dihydro-8H-pyrrolo[3',4':3,4]pyrrolo[2,1-a]isoquinoline-9,11(8aH,10H)-dione
    —— 5-(2,6-Diethylphenyl)-1-(2,3-dihydro-1,4-benzodioxin-6-yl)-3-[(4-nitrophenyl)methyl]-4,6-dioxo-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid —— C32H31N3O8
    5-(2,6-Diethylphenyl)-1-(2,3-dihydro-1,4-benzodioxin-6-yl)-3-[(4-nitrophenyl)methyl]-4,6-dioxo-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid
    —— 1-[5-[(2-Chlorophenyl)methylsulfanyl]-1,3,4-thiadiazol-2-yl]-4-[(2,5-dimethylphenyl)-hydroxymethylidene]-5-(3-ethoxy-4-hydroxyphenyl)pyrrolidine-2,3-dione —— C30H26ClN3O5S2
    1-[5-[(2-Chlorophenyl)methylsulfanyl]-1,3,4-thiadiazol-2-yl]-4-[(2,5-dimethylphenyl)-hydroxymethylidene]-5-(3-ethoxy-4-hydroxyphenyl)pyrrolidine-2,3-dione
    —— 1-[5-[(2-Chlorophenyl)methylsulfanyl]-1,3,4-thiadiazol-2-yl]-5-(3,4-dimethoxyphenyl)-4-[(2,5-dimethylphenyl)-hydroxymethylidene]pyrrolidine-2,3-dione —— C30H26ClN3O5S2
    1-[5-[(2-Chlorophenyl)methylsulfanyl]-1,3,4-thiadiazol-2-yl]-5-(3,4-dimethoxyphenyl)-4-[(2,5-dimethylphenyl)-hydroxymethylidene]pyrrolidine-2,3-dione
    —— Methyl 5-(3-chlorophenyl)-4,6-dioxo-1,3a,4,5,6,6a-hexahydropyrrolo[3,4-c]pyrazole-3-carboxylate —— C13H10ClN3O4
    Methyl 5-(3-chlorophenyl)-4,6-dioxo-1,3a,4,5,6,6a-hexahydropyrrolo[3,4-c]pyrazole-3-carboxylate
    —— 4-[(3,4-Dimethoxyphenyl)-hydroxymethylidene]-5-(3-ethoxy-4-hydroxyphenyl)pyrrolidine-2,3-dione —— C21H21NO7
    4-[(3,4-Dimethoxyphenyl)-hydroxymethylidene]-5-(3-ethoxy-4-hydroxyphenyl)pyrrolidine-2,3-dione
    —— 1-[5-[(2-Chlorophenyl)methylsulfanyl]-1,3,4-thiadiazol-2-yl]-4-[(2,5-dimethylphenyl)-hydroxymethylidene]-5-(4-hydroxy-3-methoxyphenyl)pyrrolidine-2,3-dione —— C29H24ClN3O5S2
    1-[5-[(2-Chlorophenyl)methylsulfanyl]-1,3,4-thiadiazol-2-yl]-4-[(2,5-dimethylphenyl)-hydroxymethylidene]-5-(4-hydroxy-3-methoxyphenyl)pyrrolidine-2,3-dione
    —— 1-[5-[(2-Chlorophenyl)methylsulfanyl]-1,3,4-thiadiazol-2-yl]-4-[(2,5-dimethylphenyl)-hydroxymethylidene]-5-(3,4,5-trimethoxyphenyl)pyrrolidine-2,3-dione —— C31H28ClN3O6S2
    1-[5-[(2-Chlorophenyl)methylsulfanyl]-1,3,4-thiadiazol-2-yl]-4-[(2,5-dimethylphenyl)-hydroxymethylidene]-5-(3,4,5-trimethoxyphenyl)pyrrolidine-2,3-dione
    —— 1-[5-[(2-Chlorophenyl)methylsulfanyl]-1,3,4-thiadiazol-2-yl]-4-[(2,5-dimethylphenyl)-hydroxymethylidene]-5-(4-ethylphenyl)pyrrolidine-2,3-dione —— C30H26ClN3O3S2
    1-[5-[(2-Chlorophenyl)methylsulfanyl]-1,3,4-thiadiazol-2-yl]-4-[(2,5-dimethylphenyl)-hydroxymethylidene]-5-(4-ethylphenyl)pyrrolidine-2,3-dione
    —— (3-Chloro-4-methoxyphenyl)-[2-(2,5-dimethoxyphenyl)-1-[3-(dimethylazaniumyl)propyl]-4,5-dioxopyrrolidin-3-ylidene]methanolate —— C25H29ClN2O6
    (3-Chloro-4-methoxyphenyl)-[2-(2,5-dimethoxyphenyl)-1-[3-(dimethylazaniumyl)propyl]-4,5-dioxopyrrolidin-3-ylidene]methanolate
    —— 5-(3-Ethoxy-4-phenylmethoxyphenyl)-4-[hydroxy-(4-propoxyphenyl)methylidene]-1-[5-[(4-methylphenyl)methylsulfanyl]-1,3,4-thiadiazol-2-yl]pyrrolidine-2,3-dione —— C39H37N3O6S2
    5-(3-Ethoxy-4-phenylmethoxyphenyl)-4-[hydroxy-(4-propoxyphenyl)methylidene]-1-[5-[(4-methylphenyl)methylsulfanyl]-1,3,4-thiadiazol-2-yl]pyrrolidine-2,3-dione
    —— 5-(3-Ethoxy-4-phenylmethoxyphenyl)-1-[5-[(2-fluorophenyl)methylsulfanyl]-1,3,4-thiadiazol-2-yl]-4-[hydroxy-(4-propoxyphenyl)methylidene]pyrrolidine-2,3-dione —— C38H34FN3O6S2
    5-(3-Ethoxy-4-phenylmethoxyphenyl)-1-[5-[(2-fluorophenyl)methylsulfanyl]-1,3,4-thiadiazol-2-yl]-4-[hydroxy-(4-propoxyphenyl)methylidene]pyrrolidine-2,3-dione
    —— 1-[5-[(2-Chlorophenyl)methylsulfanyl]-1,3,4-thiadiazol-2-yl]-5-(3-ethoxy-4-phenylmethoxyphenyl)-4-[hydroxy-(4-propoxyphenyl)methylidene]pyrrolidine-2,3-dione —— C38H34ClN3O6S2
    1-[5-[(2-Chlorophenyl)methylsulfanyl]-1,3,4-thiadiazol-2-yl]-5-(3-ethoxy-4-phenylmethoxyphenyl)-4-[hydroxy-(4-propoxyphenyl)methylidene]pyrrolidine-2,3-dione
    —— 1-(5-Acetyl-4-methyl-1,3-thiazol-2-yl)-5-(3-ethoxy-4-phenylmethoxyphenyl)-4-[hydroxy-(4-propoxyphenyl)methylidene]pyrrolidine-2,3-dione —— C35H34N2O7S
    1-(5-Acetyl-4-methyl-1,3-thiazol-2-yl)-5-(3-ethoxy-4-phenylmethoxyphenyl)-4-[hydroxy-(4-propoxyphenyl)methylidene]pyrrolidine-2,3-dione
    —— N-(3-chloro-2-pyrrolidin-1-ylphenyl)-2-(2,4-dichlorophenoxy)propanamide —— C19H19Cl3N2O2
    N-(3-chloro-2-pyrrolidin-1-ylphenyl)-2-(2,4-dichlorophenoxy)propanamide
    —— 1-[5-[(4-Chlorophenyl)methylsulfanyl]-1,3,4-thiadiazol-2-yl]-5-(3-ethoxy-4-phenylmethoxyphenyl)-4-[hydroxy-(4-propoxyphenyl)methylidene]pyrrolidine-2,3-dione —— C38H34ClN3O6S2
    1-[5-[(4-Chlorophenyl)methylsulfanyl]-1,3,4-thiadiazol-2-yl]-5-(3-ethoxy-4-phenylmethoxyphenyl)-4-[hydroxy-(4-propoxyphenyl)methylidene]pyrrolidine-2,3-dione
    —— 1-(5-Benzylsulfanyl-1,3,4-thiadiazol-2-yl)-5-(3-ethoxy-4-phenylmethoxyphenyl)-4-[hydroxy-(4-propoxyphenyl)methylidene]pyrrolidine-2,3-dione —— C38H35N3O6S2
    1-(5-Benzylsulfanyl-1,3,4-thiadiazol-2-yl)-5-(3-ethoxy-4-phenylmethoxyphenyl)-4-[hydroxy-(4-propoxyphenyl)methylidene]pyrrolidine-2,3-dione
    —— 1-(2,3-Dihydro-1,4-benzodioxin-6-yl)-5-(2-methylphenyl)-3-[(4-nitrophenyl)methyl]-4,6-dioxo-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid —— C29H25N3O8
    1-(2,3-Dihydro-1,4-benzodioxin-6-yl)-5-(2-methylphenyl)-3-[(4-nitrophenyl)methyl]-4,6-dioxo-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid
    —— 5-Benzyl-1-(2,3-dihydro-1,4-benzodioxin-6-yl)-3-[(4-nitrophenyl)methyl]-4,6-dioxo-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid —— C29H25N3O8
    5-Benzyl-1-(2,3-dihydro-1,4-benzodioxin-6-yl)-3-[(4-nitrophenyl)methyl]-4,6-dioxo-1,2,3a,6a-tetrahydropyrrolo[3,4-c]pyrrole-3-carboxylic acid
    —— 4-[2,3-Dihydro-1,4-benzodioxin-6-yl(hydroxy)methylidene]-5-(4-methoxyphenyl)-1-(2-phenylethyl)pyrrolidine-2,3-dione —— C28H25NO6
    4-[2,3-Dihydro-1,4-benzodioxin-6-yl(hydroxy)methylidene]-5-(4-methoxyphenyl)-1-(2-phenylethyl)pyrrolidine-2,3-dione
    —— Prop-2-enyl 2-[2-(3-ethoxy-4-phenylmethoxyphenyl)-3-[hydroxy-(4-propoxyphenyl)methylidene]-4,5-dioxopyrrolidin-1-yl]-4-methyl-1,3-thiazole-5-carboxylate —— C37H36N2O8S
    Prop-2-enyl 2-[2-(3-ethoxy-4-phenylmethoxyphenyl)-3-[hydroxy-(4-propoxyphenyl)methylidene]-4,5-dioxopyrrolidin-1-yl]-4-methyl-1,3-thiazole-5-carboxylate
    —— Ethyl 2-[2-(3-ethoxy-4-phenylmethoxyphenyl)-3-[hydroxy-(4-propoxyphenyl)methylidene]-4,5-dioxopyrrolidin-1-yl]-4-methyl-1,3-thiazole-5-carboxylate —— C36H36N2O8S
    Ethyl 2-[2-(3-ethoxy-4-phenylmethoxyphenyl)-3-[hydroxy-(4-propoxyphenyl)methylidene]-4,5-dioxopyrrolidin-1-yl]-4-methyl-1,3-thiazole-5-carboxylate
    —— 5-(3-Ethoxy-4-phenylmethoxyphenyl)-4-[hydroxy-(4-propoxyphenyl)methylidene]-1-(pyridin-3-ylmethyl)pyrrolidine-2,3-dione —— C35H34N2O6
    5-(3-Ethoxy-4-phenylmethoxyphenyl)-4-[hydroxy-(4-propoxyphenyl)methylidene]-1-(pyridin-3-ylmethyl)pyrrolidine-2,3-dione
    —— N-(benzylideneamino)-1-(4-methylphenyl)-5-oxopyrrolidine-3-carboxamide —— C19H19N3O2
    N-(benzylideneamino)-1-(4-methylphenyl)-5-oxopyrrolidine-3-carboxamide
    —— 5-(3-Ethoxy-4-phenylmethoxyphenyl)-4-[hydroxy-(4-propoxyphenyl)methylidene]-1-(pyridin-4-ylmethyl)pyrrolidine-2,3-dione —— C35H34N2O6
    5-(3-Ethoxy-4-phenylmethoxyphenyl)-4-[hydroxy-(4-propoxyphenyl)methylidene]-1-(pyridin-4-ylmethyl)pyrrolidine-2,3-dione
    —— 1-(2-chlorophenyl)-N-(3-cyano-4,5,6,7-tetrahydro-1-benzothiophen-2-yl)-5-oxopyrrolidine-3-carboxamide —— C20H18ClN3O2S
    1-(2-chlorophenyl)-N-(3-cyano-4,5,6,7-tetrahydro-1-benzothiophen-2-yl)-5-oxopyrrolidine-3-carboxamide
    —— 5-(3-Ethoxy-4-phenylmethoxyphenyl)-1-(furan-2-ylmethyl)-4-[hydroxy-(4-propoxyphenyl)methylidene]pyrrolidine-2,3-dione —— C34H33NO7
    5-(3-Ethoxy-4-phenylmethoxyphenyl)-1-(furan-2-ylmethyl)-4-[hydroxy-(4-propoxyphenyl)methylidene]pyrrolidine-2,3-dione
    —— 5-(3-Ethoxy-4-phenylmethoxyphenyl)-4-[hydroxy-(4-propoxyphenyl)methylidene]-1-(3-imidazol-1-ylpropyl)pyrrolidine-2,3-dione —— C35H37N3O6
    5-(3-Ethoxy-4-phenylmethoxyphenyl)-4-[hydroxy-(4-propoxyphenyl)methylidene]-1-(3-imidazol-1-ylpropyl)pyrrolidine-2,3-dione
    —— 5-(3-Bromophenyl)-1-(4,6-dimethyl-1,3-benzothiazol-2-yl)-4-[(4-ethoxyphenyl)-hydroxymethylidene]pyrrolidine-2,3-dione —— C28H23BrN2O4S
    5-(3-Bromophenyl)-1-(4,6-dimethyl-1,3-benzothiazol-2-yl)-4-[(4-ethoxyphenyl)-hydroxymethylidene]pyrrolidine-2,3-dione
    —— Methyl 2-[2-(3-ethoxy-4-phenylmethoxyphenyl)-3-[hydroxy-(4-propoxyphenyl)methylidene]-4,5-dioxopyrrolidin-1-yl]-4-methyl-1,3-thiazole-5-carboxylate —— C35H34N2O8S
    Methyl 2-[2-(3-ethoxy-4-phenylmethoxyphenyl)-3-[hydroxy-(4-propoxyphenyl)methylidene]-4,5-dioxopyrrolidin-1-yl]-4-methyl-1,3-thiazole-5-carboxylate
    —— 5-(3-Ethoxy-4-phenylmethoxyphenyl)-4-[hydroxy-(4-propoxyphenyl)methylidene]-1-(1,3-thiazol-2-yl)pyrrolidine-2,3-dione —— C32H30N2O6S
    5-(3-Ethoxy-4-phenylmethoxyphenyl)-4-[hydroxy-(4-propoxyphenyl)methylidene]-1-(1,3-thiazol-2-yl)pyrrolidine-2,3-dione
    —— 1-[2-(Diethylamino)ethyl]-5-(3-ethoxy-4-phenylmethoxyphenyl)-4-[hydroxy-(4-propoxyphenyl)methylidene]pyrrolidine-2,3-dione —— C35H42N2O6
    1-[2-(Diethylamino)ethyl]-5-(3-ethoxy-4-phenylmethoxyphenyl)-4-[hydroxy-(4-propoxyphenyl)methylidene]pyrrolidine-2,3-dione
    —— [1-[2-(Diethylazaniumyl)ethyl]-2-(3-nitrophenyl)-4,5-dioxopyrrolidin-3-ylidene]-(4-methylphenyl)methanolate —— C24H27N3O5
    [1-[2-(Diethylazaniumyl)ethyl]-2-(3-nitrophenyl)-4,5-dioxopyrrolidin-3-ylidene]-(4-methylphenyl)methanolate
    —— 5-(4-Fluorophenyl)-4-[hydroxy-(4-methylphenyl)methylidene]-1-pyrimidin-2-ylpyrrolidine-2,3-dione —— C22H16FN3O3
    5-(4-Fluorophenyl)-4-[hydroxy-(4-methylphenyl)methylidene]-1-pyrimidin-2-ylpyrrolidine-2,3-dione