Abstract
Four new isoflavones (iristectrigenin A-7-glucoside (2), 8-hydroxytectrigenin (5), 8-hydroxyiristectrigenin A (6), and 8-hydroxyirigenin (7–1) have been isolated from Belamcandae Rhizoma (the rhizome of Belamcanda chinensis), along with nine known compounds: tectridin (1), tectrigenin-4′-glucoside (3), astragalin (4), irilin D (7–2), isotectrigenin (8), tectrigenin (9), iristectrigenin B (10), hispiludin (11–1), and irigenin (11–2). The structures of 2, 5, 6 and 7–1 were determined by spectroscopic methods, including high-resolution mass spectrometry (HR-MS), proton nuclear magnetic resonance (1H-NMR), carbon-13 NMR (13C-NMR), and various two-dimensional (2D)-NMR techniques.
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Moriyasu, M., Igi, Y., Ichimaru, M. et al. New isoflavones from Belamcandae Rhizoma. J Nat Med 61, 329–333 (2007). https://doi.org/10.1007/s11418-007-0147-6
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DOI: https://doi.org/10.1007/s11418-007-0147-6