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胡黄连苷,一种从龙胆叶钓钟柳(玄参科)中分离得到的罕见梓醇型环烯醚萜苷。

Pensteminoside, an unusual catalpol-type iridoid from Penstemon gentianoides HBK (Plantaginaceae).

作者信息

Domínguez Mariana, Marín J Camilo, Esquivel Baldomero, Céspedes Carlos L

机构信息

Phytochemistry Lab., UBIPRO, FES-Iztacala, Universidad Nacional Autónoma de México, Avenida de los Barrios s/n, Los Reyes Iztacala, Tlalnepantla, Estado de México, C. P. 54090, Mexico.

出版信息

Phytochemistry. 2007 Jul;68(13):1762-6. doi: 10.1016/j.phytochem.2007.03.035. Epub 2007 May 15.

Abstract

From the MeOH and ethyl acetate extracts of aerial parts of Penstemon gentianoides HBK (Plantaginaceae) an unusual iridoid of the catalpol-type, was isolated and characterized as pensteminoside: (8-O-trans-cinnamoyl, 6-hydroxy, 1-[beta-D-glucopyranoside-6'-O-((4''-hydroxy)-cinnamoyl)]-catalpol) was isolated, along with the known iridoids: plantarelanoside and globularisicin, the flavone: luteolin and diosmetin, as well the phenylpropanoids, verbascoside and martynoside. Their structures were established by 1D and 2D NMR spectroscopic analyses.

摘要

从龙胆叶钓钟柳(玄参科)地上部分的甲醇提取物和乙酸乙酯提取物中,分离得到一种不同寻常的梓醇型环烯醚萜,并将其鉴定为钓钟柳苷:(8-O-反式肉桂酰基,6-羟基,1-[β-D-吡喃葡萄糖苷-6'-O-((4''-羟基)-肉桂酰基)]-梓醇),同时还分离得到了已知的环烯醚萜:大车前苷和球花苷、黄酮:木犀草素和香叶木素,以及苯丙素类化合物毛蕊花糖苷和角胡麻苷。通过一维和二维核磁共振光谱分析确定了它们的结构。

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