Analysis of flavonoid constituents from leaves of Acanthopanax senticosus harms by electrospray tandem mass spectrometry.
Three known flavonoids, quercetin, quercitrin (quercetin-3-0-rhamnoside) and rutin (quercetin-3-0 rutinoside), have been identified for the first time in the leaves of Acanthopanax senticosus Harms by using electrospray tandem mass spectrometry techniques (ESI-MS(n)). The flavonoid hyperin (quercetin-3-0-beta-galactoside), already known to be present, was also investigated. The diagnostic fragment ions of the aglycone quercetin were obtained in the ESI-MS(n) experiments, and a fragmentation mechanism proposed.
Chen
Maolian
M
Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, People's Republic of China. mchen@novell.chem.utk.edu
Song
Fengrui
F
Guo
Mingquan
M
Liu
Zhiqiang
Z
Liu
Shuying
S
D027481:Araliaceae / Q000737:chemistry*; D002681:China; D005419:Flavonoids / Q000032:analysis*; D018515:Plant Leaves / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry*; D021241:Spectrometry, Mass, Electrospray Ionization
D005419:Flavonoids