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Charge‐remote fragmentation of ecdysteroids conjugated with phosphoric acid
Author(s) -
Ikeda Midori,
Fujita Tsuyoshi,
Naoki Hideo,
Naya Yoko,
Mamiya Yoshitaka,
Kamba Mari,
Sonobe Haruyuki
Publication year - 1995
Publication title -
rapid communications in mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.528
H-Index - 136
eISSN - 1097-0231
pISSN - 0951-4198
DOI - 10.1002/rcm.1290091503
Subject(s) - chemistry , phosphoric acid , moiety , conjugated system , fragmentation (computing) , ring (chemistry) , side chain , tandem mass spectrometry , stereochemistry , organic chemistry , mass spectrometry , chromatography , polymer , computer science , operating system
Successful application of tandem mass spectrometry on a series of the ecdysteroid phosphates (eddysteroids conjugated with phosphoric acid) led to general information for their characterization. The 22‐phosphates and the 2‐(or 3‐)phosphates can be definitely distinguished by their charge‐remote fragmentation patterns. In the case of the 22‐phosphates, information about the side‐chain moiety is readily obtained. In the case of the 2‐(or 3‐)phosphates, information about the ring as well as the side‐chain is readily available. Neither the positional isomers (2‐ and 3‐phosphates) in the A‐ring nor the configurational isomers (α and β) can be distinguished.