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Studies on Diterpenoids Constituents from Euphorbia Kansui by Electrospray Ionization Multi-stage Tandem Mass Spectrometry

LIU Yue, LIU Zhi-Qiang*, LI Hui-Lin, SONG Feng-Rui, LIU Shu-Ying   

  1. Changchun Center of Mass Spectrometry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
  • Received:2008-05-01 Revised:1900-01-01 Online:2008-09-10 Published:2008-09-10
  • Contact: LIU Zhi-Qiang

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Abstract: Acording to the characteristic fragment ions, 39 chemical constituents from the weak polar part of the roots of Euphorbia kansui were identified by ESI-MS/MS technique. Among them, 9 new compounds were identified as 3-O-(2,3-dimethylbutanoyl)-13-O-dodecanoyl-20-O-dodecanoyl ingenol(1), 3-O-(2,3-dime-thylbutanoyl)-13-O-decanoyl-20-O-hexadecanoylingenol(2), 3-O-(2,3-dimethylbutanoyl)-13-O-dodecanoyl-20-O-[(9Z,12Z)-octadeca-9,12-dienoyl] ingenol(3), 3-O-(2,3-dimethylbutanoyl)-13-O-dodecanoyl-20-O-(octadeca-9Z-en-oyl) ingenol(4), kansuinin I(5), kansuinin J(6), kansuinin K(7), kansuinin L(8), and kansuinin M(9).

Key words: Euphorbia kansui, Diterpenoid compound, Electrospray ionization mass spectrometry(ESI-MS), FT-ICR MS, Structural identification

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