Study on alkaloids in Lobelia sessilifolia by ESI-MS(n) / 中国中药杂志

ABSTRACT

<p><b>OBJECTIVE</b>To make qualitative analysis on alkaliod in Lobelia sessilifolia.</p><p><b>METHOD</b>The ESI-MS(n) method was used for qualitative analysis.</p><p><b>RESULT</b>The structures of two alkaliods in plant extract of L. sessilifolia were successfully analyzed and identified as norlobelanine and 8, 10-diethyllobelidione by electrospray ionization multistage mass spectrometry in positive mode. Then the fragmentation mechanisms were explored.</p><p><b>CONCLUSION</b>SPE and ESI-MS(n) could simply and rapidly provide qualitative examination of alkaliods in L. sessilifolia.</p>