[Study on alkaloids in Lobelia sessilifolia by ESI-MS(n)].
OBJECTIVE
To make qualitative analysis on alkaliod in Lobelia sessilifolia.


METHODS
The ESI-MS(n) method was used for qualitative analysis.


RESULTS
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.


CONCLUSIONS
SPE and ESI-MS(n) could simply and rapidly provide qualitative examination of alkaliods in L. sessilifolia.
Development Center of Traditional Chinese Medicine and Bioengineering, Changchun University of Traditional Chinese Medicine, Changchun 130117, China.
Xiu-Li
XL
Wang
Jia-Ming
JM
Sun
Yang
Y
Song
Hui
H
Zhang
D000470:Alkaloids / Q000032:analysis* / Q000302:isolation & purification; D004365:Drugs, Chinese Herbal / Q000032:analysis / Q000302:isolation & purification; D029746:Lobelia / Q000737:chemistry*; D052616:Solid Phase Extraction; D021241:Spectrometry, Mass, Electrospray Ionization
D000470:Alkaloids; D004365:Drugs, Chinese Herbal