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

Figure 5

Compound 3. ¹H NMR (400 MHz, CDCl₃) gave 11 hydrogen signals, including 3 aromatic hydrogen signals [δ: 3.84 (1H, m J = 7.2 Hz, H-2), 6.78 (1H, d, J = 8.4 Hz, H-6), 7.04 (1H, d, J = 8.4 Hz, H-7)], 1 methylene signal [δ: 2.05 (2H, d, J = 5.0 Hz, H-3)], 1 methoxy signal [δ: 3.5 (3H, H–5OCH3)], and 1 methyl signal [δ: 1.23 (3H, d, H-2)].