New cytotoxic lignan glycosides from Phyllanthus glaucus |
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Authors: | Shan Yu Jun-Jiang Lv Jian-Qiang Zhao Yan Li Dong Wang Chong-Ren Yang |
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Affiliation: | 1. State Key Laboratory of Phytochemistry &2. Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Lanhei Road 132#, Kunming 650201, People's Republic of China;3. University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China |
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Abstract: | During the process of exploring bioactive lead compounds from Phyllanthus species, two new glycosides including an arylnaphthalene lignan, diphyllin 4-O-α-l-arabinopyranosyl-(1 → 3)-α-l-arabinopyranoside (1), and a phenolic compound, 3,4,5-trimethoxybenzyl alcohol 7-O-α-l-arabinofuranosyl-(1 → 6)-β-d-glucopyranoside (2), were isolated from the methanol extract of the whole plants of Phyllanthus glaucus Wall. ex Müll. Arg. In addition, 31 known compounds, including 19 lignan derivatives (3–21), four phenylpropanoids (22–25), seven simple phenolics (26–32) and one monoterpenoid (33) were obtained. Their structures were determined on the basis of the HR-ESI-MS, 1D and 2D NMR spectroscopic analysis, and pre-column derivative/chiral HPLC analysis in case of 1 for the absolute configurations. All these compounds were obtained from P. glaucus for the first time. Moreover, the known lignan glycoside, phyllanthusmin C (5) showed in vitro cytotoxicities against HL-60, MCF-7 and SW480 cells with IC50 values of 9.2 ± 0.2, 19.2 ± 1.7 and 20.5 ± 0.9, respectively. |
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Keywords: | Phyllanthus glaucus Wall. ex Müll. Arg glycoside arylnaphthalene lignan phenolics cytotoxicity |
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