[关键词]
[摘要]
目的 运用超高效液相色谱-电喷雾四级杆飞行时间质谱(UPLC-ESI-Q-TOF-MS)技术对中药青叶胆Swertia mileensis的主要化学成分进行定性分析。方法 采用ACQUITY HSS T3色谱柱(100 mm×2.1 mm,1.8 μm),用0.1%甲酸乙腈-0.1%甲酸水为流动相进行梯度洗脱,体积流量为0.4 mL/min,质谱使用ESI离子源,正负离子模式下采集数据,运用Masslynx4.1软件并结合SciFinder数据库、獐牙菜属相关文献以及对照品信息进行数据分析。结果 从青叶胆中鉴定出化学成分28个,包括7个环烯醚萜类、14个 酮类、3个黄酮类、2个三萜类以及2个酚类。其中断马钱子苷半缩醛内酯、8-O-β-D-吡喃木糖(1→6)-β-D-吡喃葡萄糖-1,7-二羟基-3-甲氧基(口山)酮、3-氧去甲双(口山)酮苷和sweriyunnanlactone A为首次从该植物中发现。结论 UPLC-ESI-Q-TOF-MS技术能够快速准确地鉴定青叶胆中的化学成分,为其质量控制和药效物质基础研究提供一种新的研究策略。
[Key word]
[Abstract]
Objective To analyze and identify the chemical constituents from Swertia mileensis by UPLC-ESI-Q-TOF-MS. Methods The analysis was performed on an Acquity HSS T3 reverse phase column (100 mm×2.1 mm, 1.8 μm). The mobile phase consisted of 0.1% formic acid acetonitrile and 0.1% formic acid, and was used for gradient elution, with the flow rate of 0.4 mL/min. Mass spectrometry was applied for the qualitative analysis under positive and negative ion modes and ESI ion source. Data was analyzed by Masslynx 4.1 software, SciFinder database, literatures, and standards. Results Twenty-eight compounds, including 7 iridoids, 14 xanthones, 3 flavonoids, 2 triterpenes, and 2 phenols were identified from S. mileensis. Among them, vogeloside, 8-O-β-D-glueopyranosyl-(l→6)-β-D-glueopyranosyl-l,7-dihydroxy-3-ethoxyxanthone, 3-O-demethylswertipunicoside, and sweriyunnanlactone A were reported from this species for the first time. Conclusion Using UPLC-ESI-Q-TOF-MS method the main chemical constituents from S. mileensis can be rapidly and accurately identified, which provides a new strategy for its quality control as well as a reference for clarifying the material basis of its efficacy.
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[基金项目]
国家自然科学基金青年基金(31500278);江苏省高校自然科学研究面上项目(13KJB360002);山东省高校中医药抗病毒协同创新课题(XTCX2014C01-03)