DETERMINATION OF C-6 OR C-8 SUBSTITUTED FLAVANONE USING 13C-1H LONG RANGE COUPLING AND THE REVISED STRUCTURES OF SOME FLAVANONES

Yoshiaki Shirataki; Ichiro Yokoe; Masaaki Endo; Manki Komatsu

doi:10.1248/cpb.33.444

DETERMINATION OF C-6 OR C-8 SUBSTITUTED FLAVANONE USING ¹³C-¹H LONG RANGE COUPLING AND THE REVISED STRUCTURES OF SOME FLAVANONES

Yoshiaki Shirataki, Ichiro Yokoe, Masaaki Endo, Manki Komatsu

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Keywords: euchrestaflavanone C

JOURNAL FREE ACCESS

1985 Volume 33 Issue 1 Pages 444-447

DOI https://doi.org/10.1248/cpb.33.444

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Abstract

C-6 or C-8 substituted flavanones were determined by methods of chemical and/or ¹H-NMR spectral analysis. We report a very convenient method for determining the substituted position of these flavanones using ¹³C-¹H long range coupling. In connection with this study, we revised some structures of flavanones using this technique.

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