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  • Title: [Mass spectrum characterization of five valepotriates by electrospray ionization tandem mass spectrometry].
    Author: Wang CG, Liu Y, Shi JL, Xiao Y, Shi SN, Hou WH, Wang ZJ.
    Journal: Zhongguo Zhong Yao Za Zhi; 2013 Feb; 38(4):578-84. PubMed ID: 23713287.
    Abstract:
    OBJECTIVE: To discuss mass spectrum characterization of five valepotriates including 'monoene' type (didrovaltrate), 'diene' type (valtrate, acevaltrate) and 'four-olefinic' type (baldrinal and homobaldrinal) by electrospray ionization tandem mass spectrometry (ESI-MS(n)). METHOD: This study was carried out on the basis of electrospray ionization tandem mass spectrometric method and analysis of multistage fragments. RESULT: The fragmentation patterns and structural assignment of 'monoene' type, 'diene' type and 'four-olefinic' type valepotriates in ESI-MSn under positive mode were summarized. CONCLUSION: The compounds have a strong pyrolysis rules and it can provide reference date for valepotriates in rapid structural identification, quantitative analysis and pharmacokinetic study.
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