The present study was designed to determine the chemical constituents of the stem tuber of Pinellia pedatisecta. The chemical constituents were isolated and purified by various chromatographic techniques, and their st...The present study was designed to determine the chemical constituents of the stem tuber of Pinellia pedatisecta. The chemical constituents were isolated and purified by various chromatographic techniques, and their structures were elucidated on the basis of physicochemical properties and spectral data. Three new alkaloids(compounds 1, 2, and 3) were obtained and identified as 9-((5-methoxypyridin-2-yl)methyl)-9 H-purin-6-amine(1), 4-(2-(2, 5-dioxopyrrolidin-1-yl)ethyl)phenyl acetate(2), and N-(9-((5-methoxypyridin-2-yl)methyl)-9 H-purin-6-yl)acetamide(3). These compounds were evaluated for their cytotoxicity against human cervical cancer He La cells. Compounds 1 and 3 significantly inhibited the proliferation of He La cells with IC_(50) values being 3.02 ± 0.54 and 7.16 ± 0.62 μmol·L^(-1), respectively.展开更多
目的建立脑立清制剂中水麦冬酸成分的检测方法。方法样品经萃取富集后,利用超高效液相色谱-三重四极杆质谱(UPLC-MS/MS),以水麦冬酸为指标成分,对脑立清制剂中常见掺伪虎掌南星情况进行监控。采用Waters ACQUITY UPLC HSS T3 C 18(2.1 m...目的建立脑立清制剂中水麦冬酸成分的检测方法。方法样品经萃取富集后,利用超高效液相色谱-三重四极杆质谱(UPLC-MS/MS),以水麦冬酸为指标成分,对脑立清制剂中常见掺伪虎掌南星情况进行监控。采用Waters ACQUITY UPLC HSS T3 C 18(2.1 mm×100 mm,1.8μm)色谱柱,以乙腈-0.1%甲酸溶液为流动相,梯度洗脱,体积流量0.2 mL·min^(-1);柱温30℃,进样量2μL;质谱条件采用ESI-多反应监测(MRM)模式扫描,选择m/z 187.0→143.3和m/z 187.0→98.9作为检测离子对。结果以所建立的方法对88批次脑立清制剂进行检测,结果5个厂家的15批样品检查出水麦冬酸成分。结论所建立的方法准确可靠,专属性强,可用于脑立清制剂中的水麦冬酸成分的检查;同时也为其他含半夏制剂中掺伪虎掌南星的监控提供参考。展开更多
基金supported by the National Natural Science Foundation of China(No.81373964)Introduction Program of Scientific Researcher of Sichuan University of Science&Engineering(Nos.2016RCL07 and 2017RCL61)+2 种基金the Opening Project of Key Laboratory of Green Chemistry of Sichuan Institutes of Higher Education(No.LYJ1302)the Scientific Research Fund of the Sichuan Provincial Education Department(No.13ZB0133)the Science and Technology Program Project of Sichuan(No.2015JY0024)
文摘The present study was designed to determine the chemical constituents of the stem tuber of Pinellia pedatisecta. The chemical constituents were isolated and purified by various chromatographic techniques, and their structures were elucidated on the basis of physicochemical properties and spectral data. Three new alkaloids(compounds 1, 2, and 3) were obtained and identified as 9-((5-methoxypyridin-2-yl)methyl)-9 H-purin-6-amine(1), 4-(2-(2, 5-dioxopyrrolidin-1-yl)ethyl)phenyl acetate(2), and N-(9-((5-methoxypyridin-2-yl)methyl)-9 H-purin-6-yl)acetamide(3). These compounds were evaluated for their cytotoxicity against human cervical cancer He La cells. Compounds 1 and 3 significantly inhibited the proliferation of He La cells with IC_(50) values being 3.02 ± 0.54 and 7.16 ± 0.62 μmol·L^(-1), respectively.