Structure Elucidation of Isoflavones Extracted from Belamcanda Chinensis

Abstract

Abstract:

A new isoflavone and two compounds with similar structures, namely 5, 7, 3′-trihydroxy-6, 2′, 5′-trimethoxyisoflavone, 5, 7, 3′-trihydroxy-6, 4′, 5′-trimethoxyisoflavone (irigenin) and its glucoside (iridin), were isolated from Belamcanda chinensis. The structures of these compounds were determined by ¹H and ¹³C NMR spectroscopy. The structure of the new isoflavone was further verified by combined use of mass spectroscopy and 2D NMR techniques including HMBC, HSQC and NOESY.

Key words: NMR, assignments, mass spectroscopy, Belamcanda chinensis, isoflavone, irigenin

CLC Number:

O641

Cite this article

DONG Yi, WU Li-Jun, ZHANG Xiao-Qing, HOU Wen-Bin. Structure Elucidation of Isoflavones Extracted from Belamcanda Chinensis[J]. Chinese Journal of Magnetic Resonance, 2005, 22(3): 301-307.

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References

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