Chemical Compounds Isolated from Dendrobium crepidatum and Their Bioactive Activities
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摘要:
目的 研究玫瑰石斛化学成分,发现其抗肿瘤活性成分。 方法 玫瑰石斛经甲醇提取、硅胶和凝胶柱色谱分离,波谱分析确定结构。MTT法进行部分化合物体外抗肿瘤活性筛选。 结果 9个化合物从玫瑰石斛中分离鉴定,分别为p-hydroxybenzaldehyde (1)、p-methoxyphenol (2)、p-Hydroxybenzyl alcohol (3)、hydroquinone (4)、(24R)-ethylcholest-5-en-3-ol-7-one (5)、sinalexin (6)、bis(2-ethylhexyl) benzene-1,2-dicarboxylate (7) 、pinoresinol (8)、Chaenomin B (9),对化合物5~9进行抗肿瘤活性测试,发现化合物9对A549细胞株抑制活性较好。 结论 化合物2~ 5,7~8为首次从本植物中分离得到,化合物6,9为首次从本属植物中分离得到,9对A549细胞株IC50为29.35 μM。 Abstract:Objective To study the chemical constituents from the herbs of Dendrobium crepidatum and identify its antitumor bioactive compounds. Methods The constituents were extracted by methyl alcohol and isolated by CC and Sephadex LH-20. Their structures were identified by spectroscopic analysis(1H NMR, 13CNMR and EIMS). The antitumor activity of the constituents was determined by MTT assay in vitro. Results 9 compouds were obtained and identified as p-hydroxybenzaldehyde(1), p-methoxyphenol(2), p-Hydroxybenzyl alcohol(3), hydroquinone(4), (24R)-ethylcholest-5-en-3-ol-7-one(5), sinalexin(6), bis(2-ethylhexyl) benzene-1, 2-dicarboxylate(7) , pinoresinol(8), Chaenomin B(9). The antitumor activity of compounds 5~9 was tested, and it was found that compound 9 had good inhibitory activity against A549 cell line. Conclusion Compounds 2~5, 7~8 were isolated from the herbs for the first time and compounds 6, 9 were isolated from this genus for the first time. IC50 of 9 on A549 cell line is 29.35 μM. -
Key words:
- Dendrobium crepidatum /
- Chemical constituents /
- Bioactive activity
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表 1 化合物5~9对3种细胞株的细胞毒活性IC50 (μM)
Table 1. Cytotoxic activities of compounds 5~9 on three cell lines IC50 (μM)
化合物 A549 MCF-7/S SKOV-3 5 >100 68.44 60.01 6 75.92 72.90 65.75 7 >100 97.28 59.30 8 >100 71.92 >100 9 29.35 63.40 >100 DDP 22.02 10.02 14.15 -
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