The Mass Spectra of Flavonoids

SHIN-ICHI SASAKI; YASUHIRO ITAGAKI; TADASHI KUROKAWA; EIJI WATANABE; TETSUMI AOYAMA

doi:10.5702/massspec1953.14.82

SHIN-ICHI SASAKI, YASUHIRO ITAGAKI, TADASHI KUROKAWA, EIJI WATANABE, TETSUMI AOYAMA

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JOURNAL FREE ACCESS

1966 Volume 14 Issue 2 Pages 82-92

DOI https://doi.org/10.5702/massspec1953.14.82

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Published: June 01, 1966 Received: March 29, 1966 Available on J-STAGE: June 28, 2010 Accepted: - Advance online publication: - Revised: -
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Date of correction: June 28, 2010 Reason for correction: - Correction: DTRECEIVED Details: Right : 19660329

Date of correction: June 28, 2010 Reason for correction: - Correction: ABSTRACT Details: Wrong : The fragmentation of flavonoids by electron impact has been studied and the following results described: 1)Chalcones gave the usual fragmentation pattern; however, 2'-hydroxychalcones showed complex spectra according to the isomerization of chalcone to flavanone. 2)The fragmentation pathways of flavones were decided by comparison with many kinds of halogen-substituted flavones. 3)Isoflavone gave the M-1ion as the base peak, and no loss of CO was observed. 4)Some natural flavanones—desmethoxymatteucinol and sakuranetin derivatives—were also measured. The mass spectra were consistent with their structures.
Right : The fragmentation of flavonoids by electron impact has been studied and the following results described: 1) Chalcones gave the usual fragmentation pattern; however, 2′-hydroxychalcones showed complex spectra according to the isomerization of chalcone to flavanone. 2) The fragmentation pathways of flavones were decided by comparison with many kinds of halogen-substituted flavones. 3) Isoflavone gave the M-1ion as the base peak, and no loss of CO was observed. 4) Some natural flavanones-desmethoxymatteucinol and sakuranetin derivatives-were also measured. The mass spectra were consistent with their structures.

Date of correction: June 28, 2010 Reason for correction: - Correction: CITATION Details: Wrong : E
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Right : H. Budzikiewicz, C. Djerassi, D. H. Williams, Structure Elucidation of Natural Products by Mass Spectrometry, Vol II,P.263(1964)Holden Day, San Francisco
C. S. Barnes, J. L. Occolowitz, Aust. J. Chem., 17,975(1964)
F. C. Chen. T. H. Tsai, J. Taiwan Pharm. Association4,42(1952)F.C.Chen,C.T.Chiang,T.T.Shi,T.Lin,J.Chinese Chem.Soc.Ser.II,1,159(1954)
F. W. McLafferty, Anal, Chem., 34,2(1962)

Abstract

The fragmentation of flavonoids by electron impact has been studied and the following results described: 1) Chalcones gave the usual fragmentation pattern; however, 2′-hydroxychalcones showed complex spectra according to the isomerization of chalcone to flavanone. 2) The fragmentation pathways of flavones were decided by comparison with many kinds of halogen-substituted flavones. 3) Isoflavone gave the M-1ion as the base peak, and no loss of CO was observed. 4) Some natural flavanones-desmethoxymatteucinol and sakuranetin derivatives-were also measured. The mass spectra were consistent with their structures.

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