摩熵化学
数据库官网
小程序
打开微信扫一扫
首页 分子通 化学资讯 化学百科 反应查询 关于我们
请输入关键词
历史搜索
    热门化合物HOT
    • 喹啉
    • 水杨醛
    • 二溴甲烷
    • 谷胱甘肽
    • L-乳酸
    • 苯巴比妥
    • 辣椒碱
    • 非那明
    • 百草枯
    • 联苯烯
    首页 分子通 按分子结构分类 有机化合物 有机杂环化合物 香豆素

    香豆素

    香豆素 基本信息

    香豆素（Coumarin）是一类具有独特芳香气味的化合物，化学式为C9H6O2。它们属于苯骈α-呋喃酮类化合物，在自然界中广泛存在。

    结构特征

    香豆素的基本结构由苯环和呋喃酮构成，其中苯环与四个碳原子相连的呋喃酮单元形成独特的“香豆素环”。

    自然来源

    香豆素存在于多种植物、真菌及动物体内。在植物界中，它主要作为天然防御机制的一部分，用作对昆虫的化学信号。著名的例子包括：天竺葵科（如紫花苜蓿）、唇形科（如薄荷）和芸香科（如柑橘属果实）。此外，在真菌、苔藓及藻类中也有发现。

    化学性质 稳定性

    由于其独特的结构，香豆素表现出良好的化学稳定性。它们不易被氧化或还原，但可以与其他化合物发生多种类型的反应，包括缩合、取代等。

    生物活性

    许多香豆素衍生物具有生物活性，能够引起抗菌、抗炎、抗氧化等多种作用。这些特性使它们成为医药、食品添加剂等多个领域的重要研究对象。

    应用领域 医药行业

    在制药业中，某些结构类似物被开发为药物先导化合物。例如，香豆素类抗生素是最早的广谱抗生素之一；一些香豆素衍生物还表现出抗癌潜力。

    食品工业

    由于其独特的香气和味道，在食品加工中也得到了广泛应用，常作为香精成分使用。

    其他应用

    此外，它们还在染料生产、农药开发等多个领域展现出潜在价值。

    生产方法

    香豆素可通过多种合成路径获得。传统的化学合成涉及从苯甲醛出发的反应；而近年来，通过生物转化技术，利用微生物发酵过程制备天然香豆素也成为一种可持续的方法。

    总之，香豆素因其独特的结构和广泛的生物学应用，在多个领域中发挥着重要作用，并且仍然是有机化学研究中的一个重要课题。

    相关化合物

    中文名称 英文名称 CAS号 化学式 结构式图片
    —— (2Z)-(4,6-dimethyl-1-benzofuran-3(2H)-ylidene)ethanoate —— C12H11O3-
    (2Z)-(4,6-dimethyl-1-benzofuran-3(2H)-ylidene)ethanoate
    —— (1R,2S)-N-[[(2R)-5-ethoxy-2-methyl-2,3-dihydro-1-benzofuran-6-yl]methyl]-2-[(3-methyl-1,2-oxazol-5-yl)methyl]cyclopentan-1-amine —— C22H30N2O3
    (1R,2S)-N-[[(2R)-5-ethoxy-2-methyl-2,3-dihydro-1-benzofuran-6-yl]methyl]-2-[(3-methyl-1,2-oxazol-5-yl)methyl]cyclopentan-1-amine
    —— N'-[[(2S)-5-ethoxy-2-methyl-2,3-dihydro-1-benzofuran-6-yl]methyl]-N,N-dimethyl-N'-(pyridin-3-ylmethyl)ethane-1,2-diamine —— C22H31N3O2
    N'-[[(2S)-5-ethoxy-2-methyl-2,3-dihydro-1-benzofuran-6-yl]methyl]-N,N-dimethyl-N'-(pyridin-3-ylmethyl)ethane-1,2-diamine
    —— (2S)-N-(3-methoxypropyl)-2-methyl-N-[[(2S)-2-methyl-2,3-dihydro-1-benzofuran-5-yl]methyl]-2,3-dihydro-1-benzofuran-5-carboxamide —— C24H29NO4
    (2S)-N-(3-methoxypropyl)-2-methyl-N-[[(2S)-2-methyl-2,3-dihydro-1-benzofuran-5-yl]methyl]-2,3-dihydro-1-benzofuran-5-carboxamide
    —— (3R,4R)-N,N-dimethyl-1-[[(2S)-2-methyl-2,3-dihydro-1-benzofuran-5-yl]methyl]-4-(2-piperidin-1-ylpyrimidin-4-yl)pyrrolidine-3-carboxamide —— C26H35N5O2
    (3R,4R)-N,N-dimethyl-1-[[(2S)-2-methyl-2,3-dihydro-1-benzofuran-5-yl]methyl]-4-(2-piperidin-1-ylpyrimidin-4-yl)pyrrolidine-3-carboxamide
    —— (2R)-N-(3-methoxypropyl)-2-methyl-N-[[(2R)-2-methyl-2,3-dihydro-1-benzofuran-5-yl]methyl]-2,3-dihydro-1-benzofuran-5-carboxamide —— C24H29NO4
    (2R)-N-(3-methoxypropyl)-2-methyl-N-[[(2R)-2-methyl-2,3-dihydro-1-benzofuran-5-yl]methyl]-2,3-dihydro-1-benzofuran-5-carboxamide
    —— N-[(2-methoxyphenyl)methyl]-2-[(2R)-2-methyl-2,3-dihydro-1-benzofuran-5-yl]-N-(pyridin-3-ylmethyl)acetamide —— C25H26N2O3
    N-[(2-methoxyphenyl)methyl]-2-[(2R)-2-methyl-2,3-dihydro-1-benzofuran-5-yl]-N-(pyridin-3-ylmethyl)acetamide
    —— 2-cyclopentyl-N-[(R)-[1-[[(2S)-2-methyl-2,3-dihydro-1-benzofuran-5-yl]methyl]piperidin-4-yl]-pyridin-2-ylmethyl]acetamide —— C28H37N3O2
    2-cyclopentyl-N-[(R)-[1-[[(2S)-2-methyl-2,3-dihydro-1-benzofuran-5-yl]methyl]piperidin-4-yl]-pyridin-2-ylmethyl]acetamide
    —— N-(3-fluorophenyl)-5-[[(2R)-2-methyl-2,3-dihydro-1-benzofuran-5-yl]methyl]-6,7-dihydro-4H-[1,2]oxazolo[4,5-c]pyridin-3-amine —— C22H22FN3O2
    N-(3-fluorophenyl)-5-[[(2R)-2-methyl-2,3-dihydro-1-benzofuran-5-yl]methyl]-6,7-dihydro-4H-[1,2]oxazolo[4,5-c]pyridin-3-amine
    —— (4aR,9bR)-8,9b-dimethyl-2-[(4-methylpiperazin-1-yl)methyl]-4,4a-dihydrodibenzofuran-3-one —— C20H26N2O2
    (4aR,9bR)-8,9b-dimethyl-2-[(4-methylpiperazin-1-yl)methyl]-4,4a-dihydrodibenzofuran-3-one
    —— 2-methyl-7-[[(2S)-2-methyl-2,3-dihydro-1-benzofuran-5-yl]methyl]-5,6,8,9-tetrahydro-3H-pyrimido[4,5-d]azepin-4-one —— C19H23N3O2
    2-methyl-7-[[(2S)-2-methyl-2,3-dihydro-1-benzofuran-5-yl]methyl]-5,6,8,9-tetrahydro-3H-pyrimido[4,5-d]azepin-4-one
    —— 2-[(2R)-2-methyl-2,3-dihydro-1-benzofuran-5-yl]-1-[4-[(2-methyl-1,3-thiazol-4-yl)methyl]piperazin-1-yl]ethanone —— C20H25N3O2S
    2-[(2R)-2-methyl-2,3-dihydro-1-benzofuran-5-yl]-1-[4-[(2-methyl-1,3-thiazol-4-yl)methyl]piperazin-1-yl]ethanone
    —— (1R)-N-[[(2S)-2-methyl-2,3-dihydro-1-benzofuran-5-yl]methyl]-1-(4-methyl-1,3-thiazol-2-yl)-2-thiophen-3-ylethanamine —— C20H22N2OS2
    (1R)-N-[[(2S)-2-methyl-2,3-dihydro-1-benzofuran-5-yl]methyl]-1-(4-methyl-1,3-thiazol-2-yl)-2-thiophen-3-ylethanamine
    —— N-[(2S)-1-methoxypropan-2-yl]-2-[(2R)-2-methyl-2,3-dihydro-1-benzofuran-5-yl]-N-[(3-methylphenyl)methyl]acetamide —— C23H29NO3
    N-[(2S)-1-methoxypropan-2-yl]-2-[(2R)-2-methyl-2,3-dihydro-1-benzofuran-5-yl]-N-[(3-methylphenyl)methyl]acetamide
    —— N-[(2S)-1-methoxypropan-2-yl]-2-[(2S)-2-methyl-2,3-dihydro-1-benzofuran-5-yl]-N-[(3-methylphenyl)methyl]acetamide —— C23H29NO3
    N-[(2S)-1-methoxypropan-2-yl]-2-[(2S)-2-methyl-2,3-dihydro-1-benzofuran-5-yl]-N-[(3-methylphenyl)methyl]acetamide
    —— 2-[(2S)-2-methyl-2,3-dihydro-1-benzofuran-5-yl]-N-[(R)-(4-methylphenyl)-pyridin-4-ylmethyl]acetamide —— C24H24N2O2
    2-[(2S)-2-methyl-2,3-dihydro-1-benzofuran-5-yl]-N-[(R)-(4-methylphenyl)-pyridin-4-ylmethyl]acetamide
    —— 4-[(2Z)-5-chloro-2-[2-(4-fluorophenoxy)ethylidene]-7-nitro-3H-1-benzofuran-3-yl]morpholine —— C20H18ClFN2O5
    4-[(2Z)-5-chloro-2-[2-(4-fluorophenoxy)ethylidene]-7-nitro-3H-1-benzofuran-3-yl]morpholine
    —— N-[(2R)-5-ethoxy-2-methyl-2,3-dihydro-1-benzofuran-6-yl]-4-oxo-4-thiophen-2-ylbutanamide —— C19H21NO4S
    N-[(2R)-5-ethoxy-2-methyl-2,3-dihydro-1-benzofuran-6-yl]-4-oxo-4-thiophen-2-ylbutanamide
    —— (1E)-2-methyl-1-(3-morpholin-4-yl-5-nitro-3H-1-benzofuran-2-ylidene)propan-2-ol —— C16H20N2O5
    (1E)-2-methyl-1-(3-morpholin-4-yl-5-nitro-3H-1-benzofuran-2-ylidene)propan-2-ol
    —— (2S)-5-chloro-N-[2-[4-(difluoromethoxy)phenyl]ethyl]-2,3-dihydro-1-benzofuran-2-carboxamide —— C18H16ClF2NO3
    (2S)-5-chloro-N-[2-[4-(difluoromethoxy)phenyl]ethyl]-2,3-dihydro-1-benzofuran-2-carboxamide
    —— [(2R)-5-chloro-2,3-dihydro-1-benzofuran-2-yl]-[4-(2-phenoxyethyl)piperazin-1-yl]methanone —— C21H23ClN2O3
    [(2R)-5-chloro-2,3-dihydro-1-benzofuran-2-yl]-[4-(2-phenoxyethyl)piperazin-1-yl]methanone
    —— (2S)-5-chloro-N'-[2-(2-cyanophenoxy)acetyl]-2,3-dihydro-1-benzofuran-2-carbohydrazide —— C18H14ClN3O4
    (2S)-5-chloro-N'-[2-(2-cyanophenoxy)acetyl]-2,3-dihydro-1-benzofuran-2-carbohydrazide
    —— (2S)-5-chloro-N-[[5-(4-chlorophenyl)-1,3,4-oxadiazol-2-yl]methyl]-N-cyclopropyl-2,3-dihydro-1-benzofuran-2-carboxamide —— C21H17Cl2N3O3
    (2S)-5-chloro-N-[[5-(4-chlorophenyl)-1,3,4-oxadiazol-2-yl]methyl]-N-cyclopropyl-2,3-dihydro-1-benzofuran-2-carboxamide
    —— 4-benzyl-3-[[(2S)-5-ethoxy-2-methyl-2,3-dihydro-1-benzofuran-6-yl]methylsulfanyl]-1H-1,2,4-triazol-5-one —— C21H23N3O3S
    4-benzyl-3-[[(2S)-5-ethoxy-2-methyl-2,3-dihydro-1-benzofuran-6-yl]methylsulfanyl]-1H-1,2,4-triazol-5-one
    —— (2R)-2-[(2R)-1,2-dihydroxypropan-2-yl]-2,3-dihydro-1-benzofuran-5-carbaldehyde —— C12H14O4
    (2R)-2-[(2R)-1,2-dihydroxypropan-2-yl]-2,3-dihydro-1-benzofuran-5-carbaldehyde
    —— ethyl (2E)-2-[(3R)-3-hydroxy-3-methyl-1-benzofuran-2-ylidene]acetate —— C13H14O4
    ethyl (2E)-2-[(3R)-3-hydroxy-3-methyl-1-benzofuran-2-ylidene]acetate
    —— [(2R)-5-chloro-2,3-dihydro-1-benzofuran-2-yl]-[4-(2,4,6-trimethoxyphenyl)-3,6-dihydro-2H-pyridin-1-yl]methanone —— C23H24ClNO5
    [(2R)-5-chloro-2,3-dihydro-1-benzofuran-2-yl]-[4-(2,4,6-trimethoxyphenyl)-3,6-dihydro-2H-pyridin-1-yl]methanone
    —— (E)-{1-[3-(diethylammonio)propyl]-2-(5-methylfuran-2-yl)-4,5-dioxopyrrolidin-3-ylidene}(2-methyl-2,3-dihydro-1-benzofuran-5-yl)methanolate —— C26H32N2O5
    (E)-{1-[3-(diethylammonio)propyl]-2-(5-methylfuran-2-yl)-4,5-dioxopyrrolidin-3-ylidene}(2-methyl-2,3-dihydro-1-benzofuran-5-yl)methanolate
    —— (2S)-N-[4-(2,3-dihydro-1-benzofuran-5-yl)-1,3-thiazol-2-yl]-2-(4-methoxyphenoxy)propanamide —— C21H20N2O4S
    (2S)-N-[4-(2,3-dihydro-1-benzofuran-5-yl)-1,3-thiazol-2-yl]-2-(4-methoxyphenoxy)propanamide
    —— 1-[3-(diethylamino)propyl]-3-hydroxy-4-[(2-methyl-2,3-dihydro-1-benzofuran-5-yl)carbonyl]-5-(5-methylfuran-2-yl)-1,5-dihydro-2H-pyrrol-2-one —— C26H32N2O5
    1-[3-(diethylamino)propyl]-3-hydroxy-4-[(2-methyl-2,3-dihydro-1-benzofuran-5-yl)carbonyl]-5-(5-methylfuran-2-yl)-1,5-dihydro-2H-pyrrol-2-one
    —— (2R)-2-(3-bromophenoxy)-N'-[2-(2,3-dihydro-1-benzofuran-5-yl)acetyl]propanehydrazide —— C19H19BrN2O4
    (2R)-2-(3-bromophenoxy)-N'-[2-(2,3-dihydro-1-benzofuran-5-yl)acetyl]propanehydrazide
    —— (4E)-1-[2-(dimethylamino)ethyl]-4-[hydroxy-(2-methyl-2,3-dihydro-1-benzofuran-5-yl)methylidene]-5-(5-methylfuran-2-yl)pyrrolidine-2,3-dione —— C23H26N2O5
    (4E)-1-[2-(dimethylamino)ethyl]-4-[hydroxy-(2-methyl-2,3-dihydro-1-benzofuran-5-yl)methylidene]-5-(5-methylfuran-2-yl)pyrrolidine-2,3-dione
    —— (4E)-1-(furan-2-ylmethyl)-4-[hydroxy-(2-methyl-2,3-dihydro-1-benzofuran-5-yl)methylidene]-5-pyridin-4-ylpyrrolidine-2,3-dione —— C24H20N2O5
    (4E)-1-(furan-2-ylmethyl)-4-[hydroxy-(2-methyl-2,3-dihydro-1-benzofuran-5-yl)methylidene]-5-pyridin-4-ylpyrrolidine-2,3-dione
    —— (4E)-5-(furan-2-yl)-1-(furan-2-ylmethyl)-4-[hydroxy-(2-methyl-2,3-dihydro-1-benzofuran-5-yl)methylidene]pyrrolidine-2,3-dione —— C23H19NO6
    (4E)-5-(furan-2-yl)-1-(furan-2-ylmethyl)-4-[hydroxy-(2-methyl-2,3-dihydro-1-benzofuran-5-yl)methylidene]pyrrolidine-2,3-dione
    —— (4E)-5-(furan-2-yl)-4-[hydroxy-(2-methyl-2,3-dihydro-1-benzofuran-5-yl)methylidene]-1-(pyridin-3-ylmethyl)pyrrolidine-2,3-dione —— C24H20N2O5
    (4E)-5-(furan-2-yl)-4-[hydroxy-(2-methyl-2,3-dihydro-1-benzofuran-5-yl)methylidene]-1-(pyridin-3-ylmethyl)pyrrolidine-2,3-dione
    —— (4E)-4-[hydroxy-(2-methyl-2,3-dihydro-1-benzofuran-5-yl)methylidene]-5-pyridin-4-yl-1-(pyridin-3-ylmethyl)pyrrolidine-2,3-dione —— C25H21N3O4
    (4E)-4-[hydroxy-(2-methyl-2,3-dihydro-1-benzofuran-5-yl)methylidene]-5-pyridin-4-yl-1-(pyridin-3-ylmethyl)pyrrolidine-2,3-dione
    —— prop-2-enyl 2-[(4E)-4-[hydroxy-(2-methyl-2,3-dihydro-1-benzofuran-5-yl)methylidene]-2,3-dioxo-5-pyridin-4-ylpyrrolidin-1-yl]-4-methyl-1,3-thiazole-5-carboxylate —— C27H23N3O6S
    prop-2-enyl 2-[(4E)-4-[hydroxy-(2-methyl-2,3-dihydro-1-benzofuran-5-yl)methylidene]-2,3-dioxo-5-pyridin-4-ylpyrrolidin-1-yl]-4-methyl-1,3-thiazole-5-carboxylate
    —— prop-2-enyl 2-[(4E)-4-[hydroxy-(2-methyl-2,3-dihydro-1-benzofuran-5-yl)methylidene]-2,3-dioxo-5-thiophen-2-ylpyrrolidin-1-yl]-4-methyl-1,3-thiazole-5-carboxylate —— C26H22N2O6S2
    prop-2-enyl 2-[(4E)-4-[hydroxy-(2-methyl-2,3-dihydro-1-benzofuran-5-yl)methylidene]-2,3-dioxo-5-thiophen-2-ylpyrrolidin-1-yl]-4-methyl-1,3-thiazole-5-carboxylate
    —— prop-2-enyl 2-[(3E)-2-(furan-2-yl)-3-[hydroxy-(2-methyl-2,3-dihydro-1-benzofuran-5-yl)methylidene]-4,5-dioxopyrrolidin-1-yl]-4-methyl-1,3-thiazole-5-carboxylate —— C26H22N2O7S
    prop-2-enyl 2-[(3E)-2-(furan-2-yl)-3-[hydroxy-(2-methyl-2,3-dihydro-1-benzofuran-5-yl)methylidene]-4,5-dioxopyrrolidin-1-yl]-4-methyl-1,3-thiazole-5-carboxylate
    —— ethyl 2-[(4E)-4-[hydroxy-(2-methyl-2,3-dihydro-1-benzofuran-5-yl)methylidene]-2,3-dioxo-5-thiophen-2-ylpyrrolidin-1-yl]-4-methyl-1,3-thiazole-5-carboxylate —— C25H22N2O6S2
    ethyl 2-[(4E)-4-[hydroxy-(2-methyl-2,3-dihydro-1-benzofuran-5-yl)methylidene]-2,3-dioxo-5-thiophen-2-ylpyrrolidin-1-yl]-4-methyl-1,3-thiazole-5-carboxylate
    —— methyl 2-[(4E)-4-[hydroxy-(2-methyl-2,3-dihydro-1-benzofuran-5-yl)methylidene]-2,3-dioxo-5-pyridin-4-ylpyrrolidin-1-yl]-4-methyl-1,3-thiazole-5-carboxylate —— C25H21N3O6S
    methyl 2-[(4E)-4-[hydroxy-(2-methyl-2,3-dihydro-1-benzofuran-5-yl)methylidene]-2,3-dioxo-5-pyridin-4-ylpyrrolidin-1-yl]-4-methyl-1,3-thiazole-5-carboxylate
    —— methyl 2-[(4E)-4-[hydroxy-(2-methyl-2,3-dihydro-1-benzofuran-5-yl)methylidene]-2,3-dioxo-5-thiophen-2-ylpyrrolidin-1-yl]-4-methyl-1,3-thiazole-5-carboxylate —— C24H20N2O6S2
    methyl 2-[(4E)-4-[hydroxy-(2-methyl-2,3-dihydro-1-benzofuran-5-yl)methylidene]-2,3-dioxo-5-thiophen-2-ylpyrrolidin-1-yl]-4-methyl-1,3-thiazole-5-carboxylate
    —— (4E)-5-(furan-2-yl)-4-[hydroxy-(2-methyl-2,3-dihydro-1-benzofuran-5-yl)methylidene]-1-(3-morpholin-4-ylpropyl)pyrrolidine-2,3-dione —— C25H28N2O6
    (4E)-5-(furan-2-yl)-4-[hydroxy-(2-methyl-2,3-dihydro-1-benzofuran-5-yl)methylidene]-1-(3-morpholin-4-ylpropyl)pyrrolidine-2,3-dione
    —— 3-hydroxy-4-(2-methyl-2,3-dihydro-1-benzofuran-5-carbonyl)-1-[3-(morpholin-4-yl)propyl]-5-(thiophen-2-yl)-2,5-dihydro-1H-pyrrol-2-one —— C25H28N2O5S
    3-hydroxy-4-(2-methyl-2,3-dihydro-1-benzofuran-5-carbonyl)-1-[3-(morpholin-4-yl)propyl]-5-(thiophen-2-yl)-2,5-dihydro-1H-pyrrol-2-one
    —— (4E)-4-[hydroxy-(2-methyl-2,3-dihydro-1-benzofuran-5-yl)methylidene]-1-(3-methoxypropyl)-5-pyridin-4-ylpyrrolidine-2,3-dione —— C23H24N2O5
    (4E)-4-[hydroxy-(2-methyl-2,3-dihydro-1-benzofuran-5-yl)methylidene]-1-(3-methoxypropyl)-5-pyridin-4-ylpyrrolidine-2,3-dione
    —— (4E)-1-[2-(dimethylamino)ethyl]-5-(furan-2-yl)-4-[hydroxy-(2-methyl-2,3-dihydro-1-benzofuran-5-yl)methylidene]pyrrolidine-2,3-dione —— C22H24N2O5
    (4E)-1-[2-(dimethylamino)ethyl]-5-(furan-2-yl)-4-[hydroxy-(2-methyl-2,3-dihydro-1-benzofuran-5-yl)methylidene]pyrrolidine-2,3-dione
    —— (4E)-5-(furan-2-yl)-4-[hydroxy-(2-methyl-2,3-dihydro-1-benzofuran-5-yl)methylidene]-1-(3-methoxypropyl)pyrrolidine-2,3-dione —— C22H23NO6
    (4E)-5-(furan-2-yl)-4-[hydroxy-(2-methyl-2,3-dihydro-1-benzofuran-5-yl)methylidene]-1-(3-methoxypropyl)pyrrolidine-2,3-dione
    —— (4E)-4-[hydroxy-(2-methyl-2,3-dihydro-1-benzofuran-5-yl)methylidene]-1-(2-methoxyethyl)-5-thiophen-2-ylpyrrolidine-2,3-dione —— C21H21NO5S
    (4E)-4-[hydroxy-(2-methyl-2,3-dihydro-1-benzofuran-5-yl)methylidene]-1-(2-methoxyethyl)-5-thiophen-2-ylpyrrolidine-2,3-dione
    —— (4E)-4-[hydroxy-(2-methyl-2,3-dihydro-1-benzofuran-5-yl)methylidene]-1-(2-methoxyethyl)-5-pyridin-4-ylpyrrolidine-2,3-dione —— C22H22N2O5
    (4E)-4-[hydroxy-(2-methyl-2,3-dihydro-1-benzofuran-5-yl)methylidene]-1-(2-methoxyethyl)-5-pyridin-4-ylpyrrolidine-2,3-dione
    —— (4E)-5-(furan-2-yl)-4-[hydroxy-(2-methyl-2,3-dihydro-1-benzofuran-5-yl)methylidene]-1-(2-methoxyethyl)pyrrolidine-2,3-dione —— C21H21NO6
    (4E)-5-(furan-2-yl)-4-[hydroxy-(2-methyl-2,3-dihydro-1-benzofuran-5-yl)methylidene]-1-(2-methoxyethyl)pyrrolidine-2,3-dione