分析方法 |
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仪器 |
Perkin Elmer series 200液相色谱仪 |
色谱柱 |
C8 色谱柱配置 5 μm 粒径颗粒 (Spheri-5 RP-8, Brownlee, Perkin-Elmer), 25°C |
流动相 |
A: 乙腈: 水 = 80: 20, B: 1% 乙酸甲醇, 0-6 min 40% A 0.45 mL/min, 6-8 min 40-60% A 0.6 mL/min, 8-10.5 min 60-30% A 0.8mL/min, 10.5-15 min 30-20% A, 15-21 min 20-40% A. |
检测器 |
UV λ244 nm 和 UV λ276 nm, API 3000 三重四极杆仪配备涡轮增压离子喷雾接口, 负离子模式. |
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样品制备 |
方法一 |
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岭南山竹子茎皮粉末由 95% EtOH 三次, 7 天, 干燥置于水中备用, 石油醚 (3L)、氯仿 (9L)、BuOH (9L) 分馏。 |
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氯仿馏分上样睢教主以石油醚: Me2CO = 7:1, 5:1, 3:1, 1:1, 0:1 洗脱得 3 馏分. 馏分 B 上样硅胶柱石油醚: Me2CO = 5:1 至 2:1 洗脱.馏分 B2 进样 Toyopearl HW-40C 柱, MeOH 洗脱. |
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RP-C18 色谱柱纯化, MeOH: 水 = 65: 35 to 9 : 1 洗脱得目标化合物. |
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方法二 |
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乙酸乙脂 (5 L) 提取三次, 浸泡过夜并搅拌, 减压蒸干。 |
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硅胶色谱柱以庚烷-乙酸乙脂 = (95:5 - 50:50) 洗脱得 12 个馏分. 馏分 VI 上样硅胶色谱柱庚烷-乙酸乙脂 = (90:10 - 75:25) 洗脱得黄色油状物, 庚烷-乙酸乙脂 = (95:5 - 50:50) 再次色谱柱分离洗脱得10 个馏分. |
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馏分VII (350 mg) 上样硅胶色谱柱庚烷-丙酮 (95: 5 to 50: 50)洗脱的 黄色油状藤黄酚 (83 mg). |
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参考文献 |
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