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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
    —— (4E)-1-[5-[(2-chlorophenyl)methylsulfanyl]-1,3,4-thiadiazol-2-yl]-4-[(3,8-dimethylimidazo[1,2-a]pyridin-2-yl)-hydroxymethylidene]-5-(4-methoxyphenyl)pyrrolidine-2,3-dione —— C30H24ClN5O4S2
    (4E)-1-[5-[(2-chlorophenyl)methylsulfanyl]-1,3,4-thiadiazol-2-yl]-4-[(3,8-dimethylimidazo[1,2-a]pyridin-2-yl)-hydroxymethylidene]-5-(4-methoxyphenyl)pyrrolidine-2,3-dione
    —— (4E)-1-[3-(diethylamino)propyl]-5-(3-ethoxy-4-phenylmethoxyphenyl)-4-[hydroxy(pyridin-4-yl)methylidene]pyrrolidine-2,3-dione —— C32H37N3O5
    (4E)-1-[3-(diethylamino)propyl]-5-(3-ethoxy-4-phenylmethoxyphenyl)-4-[hydroxy(pyridin-4-yl)methylidene]pyrrolidine-2,3-dione
    —— (4E)-1-(5-acetyl-4-methyl-1,3-thiazol-2-yl)-5-(4-butoxy-3-ethoxyphenyl)-4-[hydroxy(pyridin-4-yl)methylidene]pyrrolidine-2,3-dione —— C28H29N3O6S
    (4E)-1-(5-acetyl-4-methyl-1,3-thiazol-2-yl)-5-(4-butoxy-3-ethoxyphenyl)-4-[hydroxy(pyridin-4-yl)methylidene]pyrrolidine-2,3-dione
    —— (4E)-1-(5-acetyl-4-methyl-1,3-thiazol-2-yl)-5-(3-ethoxy-4-phenylmethoxyphenyl)-4-[hydroxy(pyridin-4-yl)methylidene]pyrrolidine-2,3-dione —— C31H27N3O6S
    (4E)-1-(5-acetyl-4-methyl-1,3-thiazol-2-yl)-5-(3-ethoxy-4-phenylmethoxyphenyl)-4-[hydroxy(pyridin-4-yl)methylidene]pyrrolidine-2,3-dione
    —— (4E)-1-[3-(diethylamino)propyl]-5-[3-ethoxy-4-(3-methylbutoxy)phenyl]-4-[hydroxy(pyridin-4-yl)methylidene]pyrrolidine-2,3-dione —— C30H41N3O5
    (4E)-1-[3-(diethylamino)propyl]-5-[3-ethoxy-4-(3-methylbutoxy)phenyl]-4-[hydroxy(pyridin-4-yl)methylidene]pyrrolidine-2,3-dione
    —— (4E)-5-(4-butoxy-3-ethoxyphenyl)-4-[hydroxy(pyridin-4-yl)methylidene]-1-(2-methoxyethyl)pyrrolidine-2,3-dione —— C25H30N2O6
    (4E)-5-(4-butoxy-3-ethoxyphenyl)-4-[hydroxy(pyridin-4-yl)methylidene]-1-(2-methoxyethyl)pyrrolidine-2,3-dione
    —— prop-2-enyl 2-[(3E)-2-[3-ethoxy-4-(3-methylbutoxy)phenyl]-3-[hydroxy(pyridin-4-yl)methylidene]-4,5-dioxopyrrolidin-1-yl]-4-methyl-1,3-thiazole-5-carboxylate —— C31H33N3O7S
    prop-2-enyl 2-[(3E)-2-[3-ethoxy-4-(3-methylbutoxy)phenyl]-3-[hydroxy(pyridin-4-yl)methylidene]-4,5-dioxopyrrolidin-1-yl]-4-methyl-1,3-thiazole-5-carboxylate
    —— (4E)-5-(4-butoxy-3-ethoxyphenyl)-4-[hydroxy(pyridin-4-yl)methylidene]-1-(2-phenylethyl)pyrrolidine-2,3-dione —— C30H32N2O5
    (4E)-5-(4-butoxy-3-ethoxyphenyl)-4-[hydroxy(pyridin-4-yl)methylidene]-1-(2-phenylethyl)pyrrolidine-2,3-dione
    —— (4E)-1-(5-acetyl-4-methyl-1,3-thiazol-2-yl)-5-(3-ethoxy-4-pentoxyphenyl)-4-[hydroxy(pyridin-4-yl)methylidene]pyrrolidine-2,3-dione —— C29H31N3O6S
    (4E)-1-(5-acetyl-4-methyl-1,3-thiazol-2-yl)-5-(3-ethoxy-4-pentoxyphenyl)-4-[hydroxy(pyridin-4-yl)methylidene]pyrrolidine-2,3-dione
    —— (4E)-1-(5-benzylsulfanyl-1,3,4-thiadiazol-2-yl)-5-(4-hexoxyphenyl)-4-[hydroxy(pyridin-4-yl)methylidene]pyrrolidine-2,3-dione —— C31H30N4O4S2
    (4E)-1-(5-benzylsulfanyl-1,3,4-thiadiazol-2-yl)-5-(4-hexoxyphenyl)-4-[hydroxy(pyridin-4-yl)methylidene]pyrrolidine-2,3-dione
    —— (4E)-5-[3-ethoxy-4-(3-methylbutoxy)phenyl]-4-[hydroxy(pyridin-4-yl)methylidene]-1-(2-methoxyethyl)pyrrolidine-2,3-dione —— C26H32N2O6
    (4E)-5-[3-ethoxy-4-(3-methylbutoxy)phenyl]-4-[hydroxy(pyridin-4-yl)methylidene]-1-(2-methoxyethyl)pyrrolidine-2,3-dione
    —— prop-2-enyl 2-[(3E)-2-(4-hexoxyphenyl)-3-[hydroxy(pyridin-4-yl)methylidene]-4,5-dioxopyrrolidin-1-yl]-4-methyl-1,3-thiazole-5-carboxylate —— C30H31N3O6S
    prop-2-enyl 2-[(3E)-2-(4-hexoxyphenyl)-3-[hydroxy(pyridin-4-yl)methylidene]-4,5-dioxopyrrolidin-1-yl]-4-methyl-1,3-thiazole-5-carboxylate
    —— (4E)-1-benzyl-5-(4-hexoxyphenyl)-4-[hydroxy(pyridin-4-yl)methylidene]pyrrolidine-2,3-dione —— C29H30N2O4
    (4E)-1-benzyl-5-(4-hexoxyphenyl)-4-[hydroxy(pyridin-4-yl)methylidene]pyrrolidine-2,3-dione
    —— (4E)-1-[2-(dimethylamino)ethyl]-5-(3-ethoxy-4-pentoxyphenyl)-4-[hydroxy(pyridin-4-yl)methylidene]pyrrolidine-2,3-dione —— C27H35N3O5
    (4E)-1-[2-(dimethylamino)ethyl]-5-(3-ethoxy-4-pentoxyphenyl)-4-[hydroxy(pyridin-4-yl)methylidene]pyrrolidine-2,3-dione
    —— (4E)-5-(3-ethoxy-4-pentoxyphenyl)-4-[hydroxy(pyridin-4-yl)methylidene]-1-(3-methoxypropyl)pyrrolidine-2,3-dione —— C27H34N2O6
    (4E)-5-(3-ethoxy-4-pentoxyphenyl)-4-[hydroxy(pyridin-4-yl)methylidene]-1-(3-methoxypropyl)pyrrolidine-2,3-dione
    —— (4E)-5-(3-ethoxy-4-phenylmethoxyphenyl)-4-[hydroxy(pyridin-4-yl)methylidene]-1-(2-methoxyethyl)pyrrolidine-2,3-dione —— C28H28N2O6
    (4E)-5-(3-ethoxy-4-phenylmethoxyphenyl)-4-[hydroxy(pyridin-4-yl)methylidene]-1-(2-methoxyethyl)pyrrolidine-2,3-dione
    —— (4E)-5-(3-ethoxy-4-pentoxyphenyl)-4-[hydroxy(pyridin-4-yl)methylidene]-1-(3-imidazol-1-ylpropyl)pyrrolidine-2,3-dione —— C29H34N4O5
    (4E)-5-(3-ethoxy-4-pentoxyphenyl)-4-[hydroxy(pyridin-4-yl)methylidene]-1-(3-imidazol-1-ylpropyl)pyrrolidine-2,3-dione
    —— ethyl 2-[(3E)-2-(4-hexoxyphenyl)-3-[hydroxy(pyridin-4-yl)methylidene]-4,5-dioxopyrrolidin-1-yl]-4-methyl-1,3-thiazole-5-carboxylate —— C29H31N3O6S
    ethyl 2-[(3E)-2-(4-hexoxyphenyl)-3-[hydroxy(pyridin-4-yl)methylidene]-4,5-dioxopyrrolidin-1-yl]-4-methyl-1,3-thiazole-5-carboxylate
    —— (4E)-5-(3-ethoxy-4-phenylmethoxyphenyl)-1-(furan-2-ylmethyl)-4-[hydroxy(pyridin-4-yl)methylidene]pyrrolidine-2,3-dione —— C30H26N2O6
    (4E)-5-(3-ethoxy-4-phenylmethoxyphenyl)-1-(furan-2-ylmethyl)-4-[hydroxy(pyridin-4-yl)methylidene]pyrrolidine-2,3-dione
    —— (4E)-5-(4-hexoxyphenyl)-4-[hydroxy(pyridin-4-yl)methylidene]-1-(6-methoxy-1,3-benzothiazol-2-yl)pyrrolidine-2,3-dione —— C30H29N3O5S
    (4E)-5-(4-hexoxyphenyl)-4-[hydroxy(pyridin-4-yl)methylidene]-1-(6-methoxy-1,3-benzothiazol-2-yl)pyrrolidine-2,3-dione
    —— (4E)-1-[3-(dimethylamino)propyl]-5-(4-hexoxyphenyl)-4-[hydroxy(pyridin-4-yl)methylidene]pyrrolidine-2,3-dione —— C27H35N3O4
    (4E)-1-[3-(dimethylamino)propyl]-5-(4-hexoxyphenyl)-4-[hydroxy(pyridin-4-yl)methylidene]pyrrolidine-2,3-dione
    —— (4E)-1-[5-[(2,4-dichlorophenyl)methylsulfanyl]-1,3,4-thiadiazol-2-yl]-5-(3-ethoxy-4-pentoxyphenyl)-4-[hydroxy(pyridin-4-yl)methylidene]pyrrolidine-2,3-dione —— C32H30Cl2N4O5S2
    (4E)-1-[5-[(2,4-dichlorophenyl)methylsulfanyl]-1,3,4-thiadiazol-2-yl]-5-(3-ethoxy-4-pentoxyphenyl)-4-[hydroxy(pyridin-4-yl)methylidene]pyrrolidine-2,3-dione
    —— (4E)-1-(4,6-dimethyl-1,3-benzothiazol-2-yl)-5-[3-ethoxy-4-(3-methylbutoxy)phenyl]-4-[hydroxy(pyridin-4-yl)methylidene]pyrrolidine-2,3-dione —— C32H33N3O5S
    (4E)-1-(4,6-dimethyl-1,3-benzothiazol-2-yl)-5-[3-ethoxy-4-(3-methylbutoxy)phenyl]-4-[hydroxy(pyridin-4-yl)methylidene]pyrrolidine-2,3-dione
    —— (4E)-1-[2-(diethylamino)ethyl]-5-(3-ethoxy-4-pentoxyphenyl)-4-[hydroxy(pyridin-4-yl)methylidene]pyrrolidine-2,3-dione —— C29H39N3O5
    (4E)-1-[2-(diethylamino)ethyl]-5-(3-ethoxy-4-pentoxyphenyl)-4-[hydroxy(pyridin-4-yl)methylidene]pyrrolidine-2,3-dione
    —— (4E)-5-(3-ethoxy-4-propoxyphenyl)-4-[hydroxy(pyridin-4-yl)methylidene]-1-(3-methoxypropyl)pyrrolidine-2,3-dione —— C25H30N2O6
    (4E)-5-(3-ethoxy-4-propoxyphenyl)-4-[hydroxy(pyridin-4-yl)methylidene]-1-(3-methoxypropyl)pyrrolidine-2,3-dione
    —— (4E)-1-(furan-2-ylmethyl)-5-(4-hexoxyphenyl)-4-[hydroxy(pyridin-4-yl)methylidene]pyrrolidine-2,3-dione —— C27H28N2O5
    (4E)-1-(furan-2-ylmethyl)-5-(4-hexoxyphenyl)-4-[hydroxy(pyridin-4-yl)methylidene]pyrrolidine-2,3-dione
    —— (4E)-5-(4-butoxy-3-ethoxyphenyl)-1-[5-[(4-fluorophenyl)methylsulfanyl]-1,3,4-thiadiazol-2-yl]-4-[hydroxy(pyridin-4-yl)methylidene]pyrrolidine-2,3-dione —— C31H29FN4O5S2
    (4E)-5-(4-butoxy-3-ethoxyphenyl)-1-[5-[(4-fluorophenyl)methylsulfanyl]-1,3,4-thiadiazol-2-yl]-4-[hydroxy(pyridin-4-yl)methylidene]pyrrolidine-2,3-dione
    —— (4E)-5-(3-ethoxy-4-pentoxyphenyl)-1-[5-[(2-fluorophenyl)methylsulfanyl]-1,3,4-thiadiazol-2-yl]-4-[hydroxy(pyridin-4-yl)methylidene]pyrrolidine-2,3-dione —— C32H31FN4O5S2
    (4E)-5-(3-ethoxy-4-pentoxyphenyl)-1-[5-[(2-fluorophenyl)methylsulfanyl]-1,3,4-thiadiazol-2-yl]-4-[hydroxy(pyridin-4-yl)methylidene]pyrrolidine-2,3-dione
    —— (4E)-1-[2-(dimethylamino)ethyl]-5-(4-hexoxyphenyl)-4-[hydroxy(pyridin-4-yl)methylidene]pyrrolidine-2,3-dione —— C26H33N3O4
    (4E)-1-[2-(dimethylamino)ethyl]-5-(4-hexoxyphenyl)-4-[hydroxy(pyridin-4-yl)methylidene]pyrrolidine-2,3-dione
    —— (4E)-5-[3-ethoxy-4-(3-methylbutoxy)phenyl]-4-[hydroxy(pyridin-4-yl)methylidene]-1-(1,3-thiazol-2-yl)pyrrolidine-2,3-dione —— C26H27N3O5S
    (4E)-5-[3-ethoxy-4-(3-methylbutoxy)phenyl]-4-[hydroxy(pyridin-4-yl)methylidene]-1-(1,3-thiazol-2-yl)pyrrolidine-2,3-dione
    —— (4E)-5-[3-ethoxy-4-(3-methylbutoxy)phenyl]-4-[hydroxy(pyridin-4-yl)methylidene]-1-[5-(naphthalen-1-ylmethylsulfanyl)-1,3,4-thiadiazol-2-yl]pyrrolidine-2,3-dione —— C36H34N4O5S2
    (4E)-5-[3-ethoxy-4-(3-methylbutoxy)phenyl]-4-[hydroxy(pyridin-4-yl)methylidene]-1-[5-(naphthalen-1-ylmethylsulfanyl)-1,3,4-thiadiazol-2-yl]pyrrolidine-2,3-dione
    —— prop-2-enyl 2-[(3E)-2-(3-ethoxy-4-phenylmethoxyphenyl)-3-[hydroxy(pyridin-4-yl)methylidene]-4,5-dioxopyrrolidin-1-yl]-4-methyl-1,3-thiazole-5-carboxylate —— C33H29N3O7S
    prop-2-enyl 2-[(3E)-2-(3-ethoxy-4-phenylmethoxyphenyl)-3-[hydroxy(pyridin-4-yl)methylidene]-4,5-dioxopyrrolidin-1-yl]-4-methyl-1,3-thiazole-5-carboxylate
    —— (4E)-5-(4-butoxy-3-ethoxyphenyl)-1-[5-[(2-fluorophenyl)methylsulfanyl]-1,3,4-thiadiazol-2-yl]-4-[hydroxy(pyridin-4-yl)methylidene]pyrrolidine-2,3-dione —— C31H29FN4O5S2
    (4E)-5-(4-butoxy-3-ethoxyphenyl)-1-[5-[(2-fluorophenyl)methylsulfanyl]-1,3,4-thiadiazol-2-yl]-4-[hydroxy(pyridin-4-yl)methylidene]pyrrolidine-2,3-dione
    —— methyl 2-[(3E)-2-[3-ethoxy-4-(3-methylbutoxy)phenyl]-3-[hydroxy(pyridin-4-yl)methylidene]-4,5-dioxopyrrolidin-1-yl]-4-methyl-1,3-thiazole-5-carboxylate —— C29H31N3O7S
    methyl 2-[(3E)-2-[3-ethoxy-4-(3-methylbutoxy)phenyl]-3-[hydroxy(pyridin-4-yl)methylidene]-4,5-dioxopyrrolidin-1-yl]-4-methyl-1,3-thiazole-5-carboxylate
    —— (4E)-5-[3-ethoxy-4-(3-methylbutoxy)phenyl]-4-[hydroxy(pyridin-4-yl)methylidene]-1-(6-methyl-1,3-benzothiazol-2-yl)pyrrolidine-2,3-dione —— C31H31N3O5S
    (4E)-5-[3-ethoxy-4-(3-methylbutoxy)phenyl]-4-[hydroxy(pyridin-4-yl)methylidene]-1-(6-methyl-1,3-benzothiazol-2-yl)pyrrolidine-2,3-dione
    —— prop-2-enyl 2-[(3E)-2-(3-ethoxy-4-pentoxyphenyl)-3-[hydroxy(pyridin-4-yl)methylidene]-4,5-dioxopyrrolidin-1-yl]-4-methyl-1,3-thiazole-5-carboxylate —— C31H33N3O7S
    prop-2-enyl 2-[(3E)-2-(3-ethoxy-4-pentoxyphenyl)-3-[hydroxy(pyridin-4-yl)methylidene]-4,5-dioxopyrrolidin-1-yl]-4-methyl-1,3-thiazole-5-carboxylate
    —— (4E)-5-[3-ethoxy-4-(3-methylbutoxy)phenyl]-4-[hydroxy(pyridin-4-yl)methylidene]-1-(2-morpholin-4-ylethyl)pyrrolidine-2,3-dione —— C29H37N3O6
    (4E)-5-[3-ethoxy-4-(3-methylbutoxy)phenyl]-4-[hydroxy(pyridin-4-yl)methylidene]-1-(2-morpholin-4-ylethyl)pyrrolidine-2,3-dione
    —— (4E)-5-(4-hexoxyphenyl)-4-[hydroxy(pyridin-4-yl)methylidene]-1-(2-morpholin-4-ylethyl)pyrrolidine-2,3-dione —— C28H35N3O5
    (4E)-5-(4-hexoxyphenyl)-4-[hydroxy(pyridin-4-yl)methylidene]-1-(2-morpholin-4-ylethyl)pyrrolidine-2,3-dione
    —— (4E)-5-(4-butoxy-3-ethoxyphenyl)-4-[hydroxy(pyridin-4-yl)methylidene]-1-(5-methyl-1,3,4-thiadiazol-2-yl)pyrrolidine-2,3-dione —— C25H26N4O5S
    (4E)-5-(4-butoxy-3-ethoxyphenyl)-4-[hydroxy(pyridin-4-yl)methylidene]-1-(5-methyl-1,3,4-thiadiazol-2-yl)pyrrolidine-2,3-dione
    —— (4E)-5-(4-butoxy-3-ethoxyphenyl)-4-[hydroxy(pyridin-4-yl)methylidene]-1-(2-morpholin-4-ylethyl)pyrrolidine-2,3-dione —— C28H35N3O6
    (4E)-5-(4-butoxy-3-ethoxyphenyl)-4-[hydroxy(pyridin-4-yl)methylidene]-1-(2-morpholin-4-ylethyl)pyrrolidine-2,3-dione
    —— (4E)-1-[3-(dimethylamino)propyl]-5-[3-ethoxy-4-(3-methylbutoxy)phenyl]-4-[hydroxy(pyridin-4-yl)methylidene]pyrrolidine-2,3-dione —— C28H37N3O5
    (4E)-1-[3-(dimethylamino)propyl]-5-[3-ethoxy-4-(3-methylbutoxy)phenyl]-4-[hydroxy(pyridin-4-yl)methylidene]pyrrolidine-2,3-dione
    —— (4E)-5-[3-ethoxy-4-(3-methylbutoxy)phenyl]-4-[hydroxy(pyridin-4-yl)methylidene]-1-(3-methoxypropyl)pyrrolidine-2,3-dione —— C27H34N2O6
    (4E)-5-[3-ethoxy-4-(3-methylbutoxy)phenyl]-4-[hydroxy(pyridin-4-yl)methylidene]-1-(3-methoxypropyl)pyrrolidine-2,3-dione
    —— (4E)-1-(6-chloro-1,3-benzothiazol-2-yl)-5-(4-hexoxyphenyl)-4-[hydroxy(pyridin-4-yl)methylidene]pyrrolidine-2,3-dione —— C29H26ClN3O4S
    (4E)-1-(6-chloro-1,3-benzothiazol-2-yl)-5-(4-hexoxyphenyl)-4-[hydroxy(pyridin-4-yl)methylidene]pyrrolidine-2,3-dione
    —— (4E)-1-[2-(diethylamino)ethyl]-5-(3-ethoxy-4-prop-2-enoxyphenyl)-4-[hydroxy(pyridin-4-yl)methylidene]pyrrolidine-2,3-dione —— C27H33N3O5
    (4E)-1-[2-(diethylamino)ethyl]-5-(3-ethoxy-4-prop-2-enoxyphenyl)-4-[hydroxy(pyridin-4-yl)methylidene]pyrrolidine-2,3-dione
    —— (4E)-5-(3-ethoxy-4-pentoxyphenyl)-4-[hydroxy(pyridin-4-yl)methylidene]-1-(5-methyl-1,3,4-thiadiazol-2-yl)pyrrolidine-2,3-dione —— C26H28N4O5S
    (4E)-5-(3-ethoxy-4-pentoxyphenyl)-4-[hydroxy(pyridin-4-yl)methylidene]-1-(5-methyl-1,3,4-thiadiazol-2-yl)pyrrolidine-2,3-dione
    —— ethyl 2-[(3E)-2-(3-ethoxy-4-phenylmethoxyphenyl)-3-[hydroxy(pyridin-4-yl)methylidene]-4,5-dioxopyrrolidin-1-yl]-4-methyl-1,3-thiazole-5-carboxylate —— C32H29N3O7S
    ethyl 2-[(3E)-2-(3-ethoxy-4-phenylmethoxyphenyl)-3-[hydroxy(pyridin-4-yl)methylidene]-4,5-dioxopyrrolidin-1-yl]-4-methyl-1,3-thiazole-5-carboxylate
    —— (4E)-1-(6-chloro-1,3-benzothiazol-2-yl)-5-[3-ethoxy-4-(3-methylbutoxy)phenyl]-4-[hydroxy(pyridin-4-yl)methylidene]pyrrolidine-2,3-dione —— C30H28ClN3O5S
    (4E)-1-(6-chloro-1,3-benzothiazol-2-yl)-5-[3-ethoxy-4-(3-methylbutoxy)phenyl]-4-[hydroxy(pyridin-4-yl)methylidene]pyrrolidine-2,3-dione
    —— (4E)-1-[2-(dimethylamino)ethyl]-5-[3-ethoxy-4-(3-methylbutoxy)phenyl]-4-[hydroxy(pyridin-4-yl)methylidene]pyrrolidine-2,3-dione —— C27H35N3O5
    (4E)-1-[2-(dimethylamino)ethyl]-5-[3-ethoxy-4-(3-methylbutoxy)phenyl]-4-[hydroxy(pyridin-4-yl)methylidene]pyrrolidine-2,3-dione
    —— (4E)-5-(4-hexoxyphenyl)-4-[hydroxy(pyridin-4-yl)methylidene]-1-(5-methyl-1,3,4-thiadiazol-2-yl)pyrrolidine-2,3-dione —— C25H26N4O4S
    (4E)-5-(4-hexoxyphenyl)-4-[hydroxy(pyridin-4-yl)methylidene]-1-(5-methyl-1,3,4-thiadiazol-2-yl)pyrrolidine-2,3-dione
    —— (4E)-5-(4-hexoxyphenyl)-4-[hydroxy(pyridin-4-yl)methylidene]-1-(3-imidazol-1-ylpropyl)pyrrolidine-2,3-dione —— C28H32N4O4
    (4E)-5-(4-hexoxyphenyl)-4-[hydroxy(pyridin-4-yl)methylidene]-1-(3-imidazol-1-ylpropyl)pyrrolidine-2,3-dione