Two new phenolic glycosides from the aerial parts of Androsace umbellata

Two new phenolic glycosides, 2-hydroxy-4-O-β-D-glucopyranosylphenylacetic acid methyl acetate （1） and 2-hydroxy-4-O-β-D- glucopyranosylphenylacetic acid （2） were isolated from the aerial parts ofAndrosace umbellata. Their structures were elucidated by spectral techniques. C 2009 Wen Cai Ye. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.

点地梅中总黄酮及总三萜含量的测定

分别以芦丁及齐墩果酸为对照品,用超声辅助提取、分光光度法测定了点地梅（Androsace umbellata）总黄酮及总三萜含量。结果表明,点地梅全草总黄酮及总三萜的相对含量分别为6.863%和8.832%, RSD分别为1.47%和1.02%；卢丁对照品在0.0138-0.2200 mg/mL范围呈良好线性关系,回归方程为y=10.27x＋0.0138,R2为0.9999；齐墩果酸对照品在0-100 mg/mL范围内呈良好线性关系,回归方程为y=0.0113x-0.0177,R2为0.9991。该法操作简单、准确,相关结果可为点地梅的开发及利用提供参考依据。