[Retracted] Endophytic Fungi and Secondary Metabolites of Rehmannia Glutinosa Based on Traditional Chinese Medicine Fingerprints

Figure 7

Compound 5. ¹H NMR (600 MHz, CD₃OD) gives 10 hydrogen signals, including 2 aromatic hydrogen signals [δ: 7.07 (1H, d, J = 8.3 Hz, H-4), 7.03 (1H, d, J = 8.3 Hz, H-5)], 2 methine signals [δ: 7.17 (1H, dd, J = 15.9, 1.3 Hz, H-1’), 6.37 (1H, dd, J = 15.9, 6.7 Hz, H-2’)], and 2 methyl signals [δ: 1.85 (3H, dd, J = 6.7, 1.4 Hz, H-3’), 1.53 (3H, s, H-2)].