Figure 4.
2D HSQC NMR spectra in DMSO-d6 (δC/δH 48 − 150/2.5 − 8.2) of authentic standards. (A) Naringenin, N; (B) naringenin chalcone, Nch; (C) dihydrotricin, dhT; (D) tricin, T.
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