Coumarins are ubiquitous in higher plants and exhibit various biological actions. The aim of this study was to investigate the structure-activity relationships of coumarin derivatives on tert-butyl hydroperoxide (t-BHP)-induced oxidative damage in human hepatoma HepG2 cells. A series of coumarin derivatives were prepared and assessed for their cytoprotective effects. Among these, a caffeoyl acid-conjugated dihydropyranocoumarin derivative, caffeoyllomatin, efficiently protected against cell damage elicited by t-BHP. Our findings suggest that caffeoyllomatin appears to be a potent cytoprotective agent.

中文翻译：

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香豆素衍生物的合成及其对t -BHP诱导的HepG2细胞氧化损伤的细胞保护作用

香豆素普遍存在于高等植物中，并表现出各种生物学作用。这项研究的目的是调查香豆素衍生物对叔丁基过氧化氢（t -BHP）诱导的人肝癌HepG2细胞氧化损伤的构效关系。制备了一系列香豆素衍生物，并对其细胞保护作用进行了评估。其中，与咖啡酸结合的二氢吡喃香豆素衍生物，咖啡酰洛美汀可有效地保护免受t- BHP引起的细胞损伤。我们的研究结果表明，咖啡酰lomatin似乎是一种有效的细胞保护剂。