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利用 LC-NMR、NMR 和 LC-MS 对貉藻中类黄酮和鞣花酸衍生物进行鉴定和 LC-DAD 定量分析。

LC-NMR, NMR, and LC-MS identification and LC-DAD quantification of flavonoids and ellagic acid derivatives in Drosera peltata.

机构信息

Institute of Chemistry, Hohenheim University, Garbenstrasse 30, 70599 Stuttgart, Germany.

出版信息

J Chromatogr B Analyt Technol Biomed Life Sci. 2013 Aug 1;932:111-6. doi: 10.1016/j.jchromb.2013.06.015. Epub 2013 Jun 17.

DOI:10.1016/j.jchromb.2013.06.015
PMID:23831703
Abstract

The herb of Drosera peltata, commonly named the shield sundew, is used as an antitussive in phytotherapy, although the plants' composition has not been determined in detail so far. Hence, in this study, we present a validated, sensitive, reliable, and cheap narrow-bore LC-DAD method for the simultaneous quantification of flavonoids and ellagic acid derivatives in this herbal drug. In addition, the structures of 13 compounds have been elucidated by LC-MS, LC-NMR, and offline NMR experiments after isolation: herbacetin-3-O-glucoside (1), gossypitrin (2), ellagic acid (3), quercetin-7-O-glucoside (4), isoquercitrin (5), kaempferol-3-O-(6″-O-galloyl)-glucoside (6), herbacetin-7-O-glucoside (7), astragalin (8), gossypetin (9), herbacetin (10), quercetin (11), 3,3'-di-O-methyl ellagic acid (12), and kaempferol (13). Compounds 1, 2, 4, 5, 6, 7, and 10 have been identified in D. peltata for the first time, and compounds 1, 4, 6, 7, and 10 have not been detected in any Drosera species before.

摘要

茅膏菜属的草药,通常称为盾叶茅膏菜,在植物疗法中被用作镇咳药,尽管迄今为止尚未详细确定这些植物的成分。因此,在这项研究中,我们提出了一种经过验证、灵敏、可靠且廉价的窄口径 LC-DAD 方法,用于同时定量分析这种草药中的类黄酮和鞣花酸衍生物。此外,通过 LC-MS、LC-NMR 和离线 NMR 实验对 13 种化合物进行了结构阐明:芹黄素-3-O-葡萄糖苷(1)、棉子糖(2)、鞣花酸(3)、槲皮素-7-O-葡萄糖苷(4)、异槲皮苷(5)、山奈酚-3-O-(6″-O-没食子酰基)-葡萄糖苷(6)、芹黄素-7-O-葡萄糖苷(7)、黄芪苷(8)、棉子糖(9)、芹黄素(10)、槲皮素(11)、3,3'-二甲氧基鞣花酸(12)和山奈酚(13)。化合物 1、2、4、5、6、7 和 10 首次在盾叶茅膏菜中被鉴定,而化合物 1、4、6、7 和 10 以前从未在任何茅膏菜属植物中被检测到。

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