表没食子儿茶素
表没食子儿茶素 性质
熔点 | 208-210°C |
---|---|
比旋光度 | -50 º (c=0.04, EtOH) |
沸点 | 685.6±55.0 °C(Predicted) |
密度 | 1.695±0.06 g/cm3(Predicted) |
储存条件 | -20°C |
溶解度 | 可溶于丙酮(少许)、DMSO(少许)、甲醇(少许) |
形态 | 固体 |
酸度系数(pKa) | 9.02±0.15(Predicted) |
颜色 | 白色至浅米色 |
最大波长(λmax) | 278nm(MeOH)(lit.) |
稳定性 | 稳定的。与强氧化剂不相容。 |
InChIKey | XMOCLSLCDHWDHP-IUODEOHRSA-N |
LogP | -0.100 (est) |
CAS 数据库 | 970-74-1(CAS DataBase Reference) |
表没食子儿茶素 用途与合成方法
(-)-表没食子儿茶素用于分析含量鉴定/测定,药理活性筛选;
表没食子儿茶素本是一种多酚化合物,天然存在于山茶科植物茶的干叶中,是绿茶提取物中生理活性物质的主体。表没食子儿茶素具有如下生理作用:
1,表没食子儿茶素具有抗氧化作用,能够保护生物膜免受自由基诱导的氧化性损伤。
2,表没食子儿茶素具有降血脂作用,能预防动脉粥样硬化和心血管疾病等多种生物学功能,甚至认为比维生素E强。
3,表没食子儿茶素具有抗癌活性,活性比表没食子儿茶素没食子酸酯略低。 (-)-Epigallocatechin (Epigallocatechin) 是绿茶中最丰富的类黄酮,能结合未折叠多肽和防止转化为淀粉样纤维。
(-)-Epigallocatechin (EGC) is a potent inhibitor of amyloidogenic cystatin I66Q amyloid fibril formation in vitro. Computational analysis suggests that (-)-Epigallocatechin prevents amyloidogenic cystatin fibril formation by stabilizing the molecule in its native-like state as opposed to redirecting aggregation to disordered, amorphous aggregates [1]. Combined curcumin and EGCG treatment reduced the cancer stem-like Cluster of differentiation 44 (CD44)-positive cell population. Western blot and immunoprecipitation analyses revealed that curcumin and (-)-Epigallocatechin (EGC) specifically inhibited STAT3 phosphorylation and STAT3-NFkB interaction was retained [2]. (-)-Epigallocatechin (EGC) exhibits a MIC and MBC of 5 μg/mL and 20 μg/mL respectively and effectively eradicated E. faecalis biofilms. (-)-Epigallocatechin induces the formation of hydroxyl radicals in E. faecalis. The addition of DIP protected E. faecalis against EGCG-mediated antibacterial effects. At sub-MIC, (-)-Epigallocatechin induces significant down-regulation of E. faecalis virulence genes [3].
药理药效:具有很好的抗氧化活性,今年研究该化合物也具有一定的抗肿瘤活性。
表没食子儿茶素 价格(试剂级)
更新日期 | 产品编号 | 产品名称 | CAS号 | 包装 | 价格 |
---|---|---|---|---|---|
2024-11-11 | XW97074101 | (-)-表没食子酸儿茶素 | 970-74-1 | 250MG | 165 |
2024-11-08 | 44898 | (-)-表没食子儿茶素 | 970-74-1 | 10mg | 3635 |