石蒜鳞茎中的生物碱成分研究(7)
1 MaterialNMR spectra were recorded on a Varian 500 spectrometer， operating at 500 MHz for 1H-NMR and 125 MHz for 13C-NMR. EI-MS was performed on an MDS-SCIEX-QSTAR instrument. ESI-MS was measured on an Aglient 6320 ion-trap mass spectrometer. Semi-preparative HPLC was achieved on a Dionex Ultimate 3000 HPLC system equipped with an ODS column(Agilent Eclipse XDB-C18 Column ......
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