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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-[3-Ethoxy-4-(3-methylbutoxy)phenyl]-4-[hydroxy-(2-methylimidazo[1,2-a]pyridin-3-yl)methylidene]-1-(3-methoxypropyl)pyrrolidine-2,3-dione —— C30H37N3O6
    5-[3-Ethoxy-4-(3-methylbutoxy)phenyl]-4-[hydroxy-(2-methylimidazo[1,2-a]pyridin-3-yl)methylidene]-1-(3-methoxypropyl)pyrrolidine-2,3-dione
    —— 5-(4-Tert-butylphenyl)-1-(4,6-dimethyl-1,3-benzothiazol-2-yl)-4-[hydroxy-(2-methylimidazo[1,2-a]pyridin-3-yl)methylidene]pyrrolidine-2,3-dione —— C32H30N4O3S
    5-(4-Tert-butylphenyl)-1-(4,6-dimethyl-1,3-benzothiazol-2-yl)-4-[hydroxy-(2-methylimidazo[1,2-a]pyridin-3-yl)methylidene]pyrrolidine-2,3-dione
    —— 5-(4-Butoxy-3-ethoxyphenyl)-1-[3-(dimethylamino)propyl]-4-[hydroxy-(2-methylimidazo[1,2-a]pyridin-3-yl)methylidene]pyrrolidine-2,3-dione —— C30H38N4O5
    5-(4-Butoxy-3-ethoxyphenyl)-1-[3-(dimethylamino)propyl]-4-[hydroxy-(2-methylimidazo[1,2-a]pyridin-3-yl)methylidene]pyrrolidine-2,3-dione
    —— 1-(6-Ethoxy-1,3-benzothiazol-2-yl)-5-(4-fluorophenyl)-4-[hydroxy-(2-methylimidazo[1,2-a]pyridin-3-yl)methylidene]pyrrolidine-2,3-dione —— C28H21FN4O4S
    1-(6-Ethoxy-1,3-benzothiazol-2-yl)-5-(4-fluorophenyl)-4-[hydroxy-(2-methylimidazo[1,2-a]pyridin-3-yl)methylidene]pyrrolidine-2,3-dione
    —— 4-[Hydroxy-(2-methylimidazo[1,2-a]pyridin-3-yl)methylidene]-1-(3-methoxypropyl)-5-(3-propoxyphenyl)pyrrolidine-2,3-dione —— C26H29N3O5
    4-[Hydroxy-(2-methylimidazo[1,2-a]pyridin-3-yl)methylidene]-1-(3-methoxypropyl)-5-(3-propoxyphenyl)pyrrolidine-2,3-dione
    —— 1-[3-(Dimethylamino)propyl]-4-[hydroxy-(2-methylimidazo[1,2-a]pyridin-3-yl)methylidene]-5-(3-prop-2-enoxyphenyl)pyrrolidine-2,3-dione —— C27H30N4O4
    1-[3-(Dimethylamino)propyl]-4-[hydroxy-(2-methylimidazo[1,2-a]pyridin-3-yl)methylidene]-5-(3-prop-2-enoxyphenyl)pyrrolidine-2,3-dione
    —— 1-(4,6-Dimethyl-1,3-benzothiazol-2-yl)-5-(3-ethoxyphenyl)-4-[hydroxy-(2-methylimidazo[1,2-a]pyridin-3-yl)methylidene]pyrrolidine-2,3-dione —— C30H26N4O4S
    1-(4,6-Dimethyl-1,3-benzothiazol-2-yl)-5-(3-ethoxyphenyl)-4-[hydroxy-(2-methylimidazo[1,2-a]pyridin-3-yl)methylidene]pyrrolidine-2,3-dione
    —— 5-(2-Fluorophenyl)-4-[hydroxy-(2-methylimidazo[1,2-a]pyridin-3-yl)methylidene]-1-(3-methoxypropyl)pyrrolidine-2,3-dione —— C23H22FN3O4
    5-(2-Fluorophenyl)-4-[hydroxy-(2-methylimidazo[1,2-a]pyridin-3-yl)methylidene]-1-(3-methoxypropyl)pyrrolidine-2,3-dione
    —— 1-(4,6-Dimethyl-1,3-benzothiazol-2-yl)-4-[hydroxy-(2-methylimidazo[1,2-a]pyridin-3-yl)methylidene]-5-(3-phenylmethoxyphenyl)pyrrolidine-2,3-dione —— C35H28N4O4S
    1-(4,6-Dimethyl-1,3-benzothiazol-2-yl)-4-[hydroxy-(2-methylimidazo[1,2-a]pyridin-3-yl)methylidene]-5-(3-phenylmethoxyphenyl)pyrrolidine-2,3-dione
    —— 4-[Hydroxy-(2-methylimidazo[1,2-a]pyridin-3-yl)methylidene]-1-(2-methoxyethyl)-5-(3-phenylmethoxyphenyl)pyrrolidine-2,3-dione —— C29H27N3O5
    4-[Hydroxy-(2-methylimidazo[1,2-a]pyridin-3-yl)methylidene]-1-(2-methoxyethyl)-5-(3-phenylmethoxyphenyl)pyrrolidine-2,3-dione
    —— 5-(3-Ethoxy-4-hydroxyphenyl)-4-[hydroxy-(2-methylimidazo[1,2-a]pyridin-3-yl)methylidene]-1-(3-methoxypropyl)pyrrolidine-2,3-dione —— C25H27N3O6
    5-(3-Ethoxy-4-hydroxyphenyl)-4-[hydroxy-(2-methylimidazo[1,2-a]pyridin-3-yl)methylidene]-1-(3-methoxypropyl)pyrrolidine-2,3-dione
    —— 5-(3-Chlorophenyl)-4-[hydroxy-(2-methylimidazo[1,2-a]pyridin-3-yl)methylidene]-1-(3-methoxypropyl)pyrrolidine-2,3-dione —— C23H22ClN3O4
    5-(3-Chlorophenyl)-4-[hydroxy-(2-methylimidazo[1,2-a]pyridin-3-yl)methylidene]-1-(3-methoxypropyl)pyrrolidine-2,3-dione
    —— 1-(6-Chloro-1,3-benzothiazol-2-yl)-4-[hydroxy-(2-methylimidazo[1,2-a]pyridin-3-yl)methylidene]-5-(3-propoxyphenyl)pyrrolidine-2,3-dione —— C29H23ClN4O4S
    1-(6-Chloro-1,3-benzothiazol-2-yl)-4-[hydroxy-(2-methylimidazo[1,2-a]pyridin-3-yl)methylidene]-5-(3-propoxyphenyl)pyrrolidine-2,3-dione
    —— (2S)-N-(4-ethoxy-3-fluorophenyl)-2-(3-methoxyphenyl)pyrrolidine-1-carboxamide —— C20H23FN2O3
    (2S)-N-(4-ethoxy-3-fluorophenyl)-2-(3-methoxyphenyl)pyrrolidine-1-carboxamide
    —— 4-[Hydroxy-(2-methylimidazo[1,2-a]pyridin-3-yl)methylidene]-1-(6-methyl-1,3-benzothiazol-2-yl)-5-(3-phenylmethoxyphenyl)pyrrolidine-2,3-dione —— C34H26N4O4S
    4-[Hydroxy-(2-methylimidazo[1,2-a]pyridin-3-yl)methylidene]-1-(6-methyl-1,3-benzothiazol-2-yl)-5-(3-phenylmethoxyphenyl)pyrrolidine-2,3-dione
    —— 5-(3,4-Dichlorophenyl)-4-[hydroxy-(2-methylimidazo[1,2-a]pyridin-3-yl)methylidene]-1-(2-methoxyethyl)pyrrolidine-2,3-dione —— C22H19Cl2N3O4
    5-(3,4-Dichlorophenyl)-4-[hydroxy-(2-methylimidazo[1,2-a]pyridin-3-yl)methylidene]-1-(2-methoxyethyl)pyrrolidine-2,3-dione
    —— 5-(4-Butoxy-3-methoxyphenyl)-1-[3-(dimethylamino)propyl]-4-[hydroxy-(2-methylimidazo[1,2-a]pyridin-3-yl)methylidene]pyrrolidine-2,3-dione —— C29H36N4O5
    5-(4-Butoxy-3-methoxyphenyl)-1-[3-(dimethylamino)propyl]-4-[hydroxy-(2-methylimidazo[1,2-a]pyridin-3-yl)methylidene]pyrrolidine-2,3-dione
    —— 1-[3-(Dimethylamino)propyl]-5-(4-hexoxyphenyl)-4-[hydroxy-(2-methylimidazo[1,2-a]pyridin-3-yl)methylidene]pyrrolidine-2,3-dione —— C30H38N4O4
    1-[3-(Dimethylamino)propyl]-5-(4-hexoxyphenyl)-4-[hydroxy-(2-methylimidazo[1,2-a]pyridin-3-yl)methylidene]pyrrolidine-2,3-dione
    —— 4-[Hydroxy-(2-methylimidazo[1,2-a]pyridin-3-yl)methylidene]-1-(3-methoxypropyl)-5-(3-phenylmethoxyphenyl)pyrrolidine-2,3-dione —— C30H29N3O5
    4-[Hydroxy-(2-methylimidazo[1,2-a]pyridin-3-yl)methylidene]-1-(3-methoxypropyl)-5-(3-phenylmethoxyphenyl)pyrrolidine-2,3-dione
    —— 4-[Hydroxy-(2-methylimidazo[1,2-a]pyridin-3-yl)methylidene]-1-(2-methoxyethyl)-5-(3-propoxyphenyl)pyrrolidine-2,3-dione —— C25H27N3O5
    4-[Hydroxy-(2-methylimidazo[1,2-a]pyridin-3-yl)methylidene]-1-(2-methoxyethyl)-5-(3-propoxyphenyl)pyrrolidine-2,3-dione
    —— 5-(4-Hexoxyphenyl)-4-[hydroxy-(2-methylimidazo[1,2-a]pyridin-3-yl)methylidene]-1-(3-methoxypropyl)pyrrolidine-2,3-dione —— C29H35N3O5
    5-(4-Hexoxyphenyl)-4-[hydroxy-(2-methylimidazo[1,2-a]pyridin-3-yl)methylidene]-1-(3-methoxypropyl)pyrrolidine-2,3-dione
    —— 5-(3,4-Diethoxyphenyl)-1-(6-ethoxy-1,3-benzothiazol-2-yl)-4-[hydroxy-(2-methylimidazo[1,2-a]pyridin-3-yl)methylidene]pyrrolidine-2,3-dione —— C32H30N4O6S
    5-(3,4-Diethoxyphenyl)-1-(6-ethoxy-1,3-benzothiazol-2-yl)-4-[hydroxy-(2-methylimidazo[1,2-a]pyridin-3-yl)methylidene]pyrrolidine-2,3-dione
    —— 4-[Hydroxy-(2-methylimidazo[1,2-a]pyridin-3-yl)methylidene]-1-(2-methoxyethyl)-5-(4-methoxyphenyl)pyrrolidine-2,3-dione —— C23H23N3O5
    4-[Hydroxy-(2-methylimidazo[1,2-a]pyridin-3-yl)methylidene]-1-(2-methoxyethyl)-5-(4-methoxyphenyl)pyrrolidine-2,3-dione
    —— 5-(3-Butoxyphenyl)-1-(6-chloro-1,3-benzothiazol-2-yl)-4-[hydroxy-(2-methylimidazo[1,2-a]pyridin-3-yl)methylidene]pyrrolidine-2,3-dione —— C30H25ClN4O4S
    5-(3-Butoxyphenyl)-1-(6-chloro-1,3-benzothiazol-2-yl)-4-[hydroxy-(2-methylimidazo[1,2-a]pyridin-3-yl)methylidene]pyrrolidine-2,3-dione
    —— 1-(4,6-Dimethyl-1,3-benzothiazol-2-yl)-5-(4-fluorophenyl)-4-[hydroxy-(2-methylimidazo[1,2-a]pyridin-3-yl)methylidene]pyrrolidine-2,3-dione —— C28H21FN4O3S
    1-(4,6-Dimethyl-1,3-benzothiazol-2-yl)-5-(4-fluorophenyl)-4-[hydroxy-(2-methylimidazo[1,2-a]pyridin-3-yl)methylidene]pyrrolidine-2,3-dione
    —— 1-(4,6-Dimethyl-1,3-benzothiazol-2-yl)-5-(4-ethoxy-3-methoxyphenyl)-4-[hydroxy-(2-methylimidazo[1,2-a]pyridin-3-yl)methylidene]pyrrolidine-2,3-dione —— C31H28N4O5S
    1-(4,6-Dimethyl-1,3-benzothiazol-2-yl)-5-(4-ethoxy-3-methoxyphenyl)-4-[hydroxy-(2-methylimidazo[1,2-a]pyridin-3-yl)methylidene]pyrrolidine-2,3-dione
    —— 4-[Hydroxy-(2-methylimidazo[1,2-a]pyridin-3-yl)methylidene]-1-(6-methyl-1,3-benzothiazol-2-yl)-5-(4-prop-2-enoxyphenyl)pyrrolidine-2,3-dione —— C30H24N4O4S
    4-[Hydroxy-(2-methylimidazo[1,2-a]pyridin-3-yl)methylidene]-1-(6-methyl-1,3-benzothiazol-2-yl)-5-(4-prop-2-enoxyphenyl)pyrrolidine-2,3-dione
    —— 4-[Hydroxy-(2-methylimidazo[1,2-a]pyridin-3-yl)methylidene]-1-(6-methyl-1,3-benzothiazol-2-yl)-5-(3,4,5-trimethoxyphenyl)pyrrolidine-2,3-dione —— C30H26N4O6S
    4-[Hydroxy-(2-methylimidazo[1,2-a]pyridin-3-yl)methylidene]-1-(6-methyl-1,3-benzothiazol-2-yl)-5-(3,4,5-trimethoxyphenyl)pyrrolidine-2,3-dione
    —— 5-(4-Ethoxyphenyl)-4-[hydroxy-(2-methylimidazo[1,2-a]pyridin-3-yl)methylidene]-1-(6-methyl-1,3-benzothiazol-2-yl)pyrrolidine-2,3-dione —— C29H24N4O4S
    5-(4-Ethoxyphenyl)-4-[hydroxy-(2-methylimidazo[1,2-a]pyridin-3-yl)methylidene]-1-(6-methyl-1,3-benzothiazol-2-yl)pyrrolidine-2,3-dione
    —— 1-(6-Chloro-1,3-benzothiazol-2-yl)-4-[hydroxy-(2-methylimidazo[1,2-a]pyridin-3-yl)methylidene]-5-(3-phenylmethoxyphenyl)pyrrolidine-2,3-dione —— C33H23ClN4O4S
    1-(6-Chloro-1,3-benzothiazol-2-yl)-4-[hydroxy-(2-methylimidazo[1,2-a]pyridin-3-yl)methylidene]-5-(3-phenylmethoxyphenyl)pyrrolidine-2,3-dione
    —— 1-(4,6-Dimethyl-1,3-benzothiazol-2-yl)-5-(3-ethoxy-4-phenylmethoxyphenyl)-4-[hydroxy-(2-methylimidazo[1,2-a]pyridin-3-yl)methylidene]pyrrolidine-2,3-dione —— C37H32N4O5S
    1-(4,6-Dimethyl-1,3-benzothiazol-2-yl)-5-(3-ethoxy-4-phenylmethoxyphenyl)-4-[hydroxy-(2-methylimidazo[1,2-a]pyridin-3-yl)methylidene]pyrrolidine-2,3-dione
    —— 5-(4-Tert-butylphenyl)-4-[hydroxy-(2-methylimidazo[1,2-a]pyridin-3-yl)methylidene]-1-(6-methyl-1,3-benzothiazol-2-yl)pyrrolidine-2,3-dione —— C31H28N4O3S
    5-(4-Tert-butylphenyl)-4-[hydroxy-(2-methylimidazo[1,2-a]pyridin-3-yl)methylidene]-1-(6-methyl-1,3-benzothiazol-2-yl)pyrrolidine-2,3-dione
    —— 4-[Hydroxy-(2-methylimidazo[1,2-a]pyridin-3-yl)methylidene]-5-(3-hydroxyphenyl)-1-(6-methyl-1,3-benzothiazol-2-yl)pyrrolidine-2,3-dione —— C27H20N4O4S
    4-[Hydroxy-(2-methylimidazo[1,2-a]pyridin-3-yl)methylidene]-5-(3-hydroxyphenyl)-1-(6-methyl-1,3-benzothiazol-2-yl)pyrrolidine-2,3-dione
    —— 4-[Hydroxy-(2-methylimidazo[1,2-a]pyridin-3-yl)methylidene]-1-(3-methoxypropyl)-5-(4-methylphenyl)pyrrolidine-2,3-dione —— C24H25N3O4
    4-[Hydroxy-(2-methylimidazo[1,2-a]pyridin-3-yl)methylidene]-1-(3-methoxypropyl)-5-(4-methylphenyl)pyrrolidine-2,3-dione
    —— 4-[Hydroxy-(2-methylimidazo[1,2-a]pyridin-3-yl)methylidene]-1-(2-methoxyethyl)-5-(3-methoxy-4-pentoxyphenyl)pyrrolidine-2,3-dione —— C28H33N3O6
    4-[Hydroxy-(2-methylimidazo[1,2-a]pyridin-3-yl)methylidene]-1-(2-methoxyethyl)-5-(3-methoxy-4-pentoxyphenyl)pyrrolidine-2,3-dione
    —— 5-(3-Bromophenyl)-1-(6-chloro-1,3-benzothiazol-2-yl)-4-[hydroxy-(2-methylimidazo[1,2-a]pyridin-3-yl)methylidene]pyrrolidine-2,3-dione —— C26H16BrClN4O3S
    5-(3-Bromophenyl)-1-(6-chloro-1,3-benzothiazol-2-yl)-4-[hydroxy-(2-methylimidazo[1,2-a]pyridin-3-yl)methylidene]pyrrolidine-2,3-dione
    —— 1-(4,6-Dimethyl-1,3-benzothiazol-2-yl)-5-(4-hydroxy-3-methoxyphenyl)-4-[hydroxy-(2-methylimidazo[1,2-a]pyridin-3-yl)methylidene]pyrrolidine-2,3-dione —— C29H24N4O5S
    1-(4,6-Dimethyl-1,3-benzothiazol-2-yl)-5-(4-hydroxy-3-methoxyphenyl)-4-[hydroxy-(2-methylimidazo[1,2-a]pyridin-3-yl)methylidene]pyrrolidine-2,3-dione
    —— 4-[Hydroxy-(2-methylimidazo[1,2-a]pyridin-3-yl)methylidene]-1-(3-methoxypropyl)-5-(4-phenylmethoxyphenyl)pyrrolidine-2,3-dione —— C30H29N3O5
    4-[Hydroxy-(2-methylimidazo[1,2-a]pyridin-3-yl)methylidene]-1-(3-methoxypropyl)-5-(4-phenylmethoxyphenyl)pyrrolidine-2,3-dione
    —— 5-(3,4-Diethoxyphenyl)-4-[hydroxy-(2-methylimidazo[1,2-a]pyridin-3-yl)methylidene]-1-(2-methoxyethyl)pyrrolidine-2,3-dione —— C26H29N3O6
    5-(3,4-Diethoxyphenyl)-4-[hydroxy-(2-methylimidazo[1,2-a]pyridin-3-yl)methylidene]-1-(2-methoxyethyl)pyrrolidine-2,3-dione
    —— 5-(3,4-Dimethoxyphenyl)-4-[hydroxy-(2-methylimidazo[1,2-a]pyridin-3-yl)methylidene]-1-(2-methoxyethyl)pyrrolidine-2,3-dione —— C24H25N3O6
    5-(3,4-Dimethoxyphenyl)-4-[hydroxy-(2-methylimidazo[1,2-a]pyridin-3-yl)methylidene]-1-(2-methoxyethyl)pyrrolidine-2,3-dione
    —— 1-[3-(Dimethylamino)propyl]-5-(3-ethoxy-4-pentoxyphenyl)-4-[hydroxy-(2-methylimidazo[1,2-a]pyridin-3-yl)methylidene]pyrrolidine-2,3-dione —— C31H40N4O5
    1-[3-(Dimethylamino)propyl]-5-(3-ethoxy-4-pentoxyphenyl)-4-[hydroxy-(2-methylimidazo[1,2-a]pyridin-3-yl)methylidene]pyrrolidine-2,3-dione
    —— 1-(4,6-Dimethyl-1,3-benzothiazol-2-yl)-4-[hydroxy-(2-methylimidazo[1,2-a]pyridin-3-yl)methylidene]-5-(3-hydroxyphenyl)pyrrolidine-2,3-dione —— C28H22N4O4S
    1-(4,6-Dimethyl-1,3-benzothiazol-2-yl)-4-[hydroxy-(2-methylimidazo[1,2-a]pyridin-3-yl)methylidene]-5-(3-hydroxyphenyl)pyrrolidine-2,3-dione
    —— 4-[Hydroxy-(2-methylimidazo[1,2-a]pyridin-3-yl)methylidene]-1-(2-methoxyethyl)-5-(3-methoxyphenyl)pyrrolidine-2,3-dione —— C23H23N3O5
    4-[Hydroxy-(2-methylimidazo[1,2-a]pyridin-3-yl)methylidene]-1-(2-methoxyethyl)-5-(3-methoxyphenyl)pyrrolidine-2,3-dione
    —— 4-[Hydroxy-(2-methylimidazo[1,2-a]pyridin-3-yl)methylidene]-1-(2-methoxyethyl)-5-(3-prop-2-enoxyphenyl)pyrrolidine-2,3-dione —— C25H25N3O5
    4-[Hydroxy-(2-methylimidazo[1,2-a]pyridin-3-yl)methylidene]-1-(2-methoxyethyl)-5-(3-prop-2-enoxyphenyl)pyrrolidine-2,3-dione
    —— 1-(6-Ethoxy-1,3-benzothiazol-2-yl)-4-[hydroxy-(2-methylimidazo[1,2-a]pyridin-3-yl)methylidene]-5-(4-methoxyphenyl)pyrrolidine-2,3-dione —— C29H24N4O5S
    1-(6-Ethoxy-1,3-benzothiazol-2-yl)-4-[hydroxy-(2-methylimidazo[1,2-a]pyridin-3-yl)methylidene]-5-(4-methoxyphenyl)pyrrolidine-2,3-dione
    —— 5-(3,4-Diethoxyphenyl)-1-(4,6-dimethyl-1,3-benzothiazol-2-yl)-4-[hydroxy-(2-methylimidazo[1,2-a]pyridin-3-yl)methylidene]pyrrolidine-2,3-dione —— C32H30N4O5S
    5-(3,4-Diethoxyphenyl)-1-(4,6-dimethyl-1,3-benzothiazol-2-yl)-4-[hydroxy-(2-methylimidazo[1,2-a]pyridin-3-yl)methylidene]pyrrolidine-2,3-dione
    —— 5-(4-Chlorophenyl)-4-[hydroxy-(2-methylimidazo[1,2-a]pyridin-3-yl)methylidene]-1-(3-methoxypropyl)pyrrolidine-2,3-dione —— C23H22ClN3O4
    5-(4-Chlorophenyl)-4-[hydroxy-(2-methylimidazo[1,2-a]pyridin-3-yl)methylidene]-1-(3-methoxypropyl)pyrrolidine-2,3-dione
    —— 4-[Hydroxy-(2-methylimidazo[1,2-a]pyridin-3-yl)methylidene]-5-(3-hydroxyphenyl)-1-(2-methoxyethyl)pyrrolidine-2,3-dione —— C22H21N3O5
    4-[Hydroxy-(2-methylimidazo[1,2-a]pyridin-3-yl)methylidene]-5-(3-hydroxyphenyl)-1-(2-methoxyethyl)pyrrolidine-2,3-dione
    —— 1-(6-Chloro-1,3-benzothiazol-2-yl)-5-(3-ethoxy-4-propoxyphenyl)-4-[hydroxy-(2-methylimidazo[1,2-a]pyridin-3-yl)methylidene]pyrrolidine-2,3-dione —— C31H27ClN4O5S
    1-(6-Chloro-1,3-benzothiazol-2-yl)-5-(3-ethoxy-4-propoxyphenyl)-4-[hydroxy-(2-methylimidazo[1,2-a]pyridin-3-yl)methylidene]pyrrolidine-2,3-dione
    —— 1-(6-Chloro-1,3-benzothiazol-2-yl)-5-(3,4-dimethoxyphenyl)-4-[hydroxy-(2-methylimidazo[1,2-a]pyridin-3-yl)methylidene]pyrrolidine-2,3-dione —— C28H21ClN4O5S
    1-(6-Chloro-1,3-benzothiazol-2-yl)-5-(3,4-dimethoxyphenyl)-4-[hydroxy-(2-methylimidazo[1,2-a]pyridin-3-yl)methylidene]pyrrolidine-2,3-dione