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

Figure 3

Compound 1. ¹H NMR (400 MHz, CDCl₃) gave 8 hydrogen signals, including 3 aromatic hydrogen signals [δ: 7.59 (1H, d, J = 8.3 Hz, H-2), 7.01 (1H, dd, J = 8.4, 2.6 Hz, H-3),7.37 (1H, d, J = 2.6 Hz, H-5)], 1 methine signal [δ: 4.96 (1H, dq, J = 7.2 Hz, H-8)], and 2 methyl signals [δ: 1.45 (3H, d, J = 7.1 Hz, H-9), 1.92 (3H, s, H-10)].