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Abstract
The pyrolysis of three standard protoberberine alkaloids—berberine, jatrorrhizine, and palmatine—has been systematically investigated by using electrospray ionization mass spectrometry (ESI-MS). By using the advantages of multi-stage tandem mass spectrometric (ESI-MSn) in specificity, sensitivity, and quickness, the detailed structural characters of the pyrolyzed products of protoberberine alkaloids have been elucidated. Some new compounds information and their structures have been obtained.
ACKNOWLEDGMENT
This work was supported by the National Natural Science Foundation of China (No. 30672600, 30772721), the Great Research Project of Chinese Academy of Sciences (KGCX2-SW-213-06), and the Natural Science Foundation of Jilin Province (No. 20060902).