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- W2017257839 abstract "Abstract Electrospray ion‐trap tandem mass spectrometry (ESI‐MS/MS) and high‐performance liquid chromatography coupled with electrospray ionization time‐of‐flight mass spectrometry (LC/ESI‐TOFMS) were used to identify and characterize eight C‐21 steroidal glycosides in Hoodia gordonii . A generalized fragmentation pathway was proposed by comparing the spectra acquired for eight C‐21 steroidal glycosides. The steroidal glycosides in Hoodia gordonii have been classified into two major core groups: hoodigenin A and calogenin. Using the ESI‐TOF method, the major core peak ions generated by hoodigenin A glycosides are m/z 313 and 295 and by calogenin glycosides are m/z 479, 461, 299 and 281, respectively. In the MS/MS spectra, fragmentation reactions of the [M+Na] + ion were recorded to provide structural information about the glycosyl and aglycone moieties. The data illustrates the ability of positive mode ESI for the identification of hoodigenin A and calogenin glycosides, including the nature of the hoodigenin A and calogenin core, the number of sugar residues and the type of saccharide moiety. Copyright © 2008 John Wiley & Sons, Ltd." @default.
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- W2017257839 date "2008-07-24" @default.
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- W2017257839 title "Identification and structural characterization of steroidal glycosides in<i>Hoodia gordonii</i>by ion-trap tandem mass spectrometry and liquid chromatography coupled with electrospray ionization time-of-flight mass spectrometry" @default.
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- W2017257839 doi "https://doi.org/10.1002/rcm.3651" @default.
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