Skip to main content

Advertisement

Table 1 1H NMR (600 MHz) and 13C NMR (150 MHz) spectral data of compounds 13 in DMSO-d 6

From: Dihydroisocoumarins from Radix Glycyrrhizae

Position Compound 1 Compound 2 Compound 3
δ C δH (J in Hz) δ C δH (J in Hz) δ C δH (J in Hz)
1 169.8 167.6 168.0
2
3 78.5 4.72 (1H, qd, 6.4, 1.6) 80.7 4.88 (1H, qd, 6.8, 1.6) 80.9 4.87 (1H, qd, 6.8, 1.2)
4 62.3 4.66 (1H, dd, 6.8, 1.6) 63.2 4.77 (1H, dd, 5.2, 1.6) 63.6 4.67 (1H, dd, 5.6, 1.2)
5 124.7 125.3 127.0
6 138.3 7.64 (1H, d, 8.8) 138.3 7.66 (1H, d, 8.8) 137.1 7.45 (1H, d, 8.4)
7 117.3 6.99 (1H, d, 8.8) 117.0 7.03 (1H, d, 8.8) 116.7 6.92 (1H, d, 8.4)
8 161.1 160.6 158.8
9 16.6 1.45 (3H, d, 6.4) 17.4 1.16 (3H, d, 6.8) 16.7 1.16 (3H, d, 6.8)
10 62.2 5.09 (1H, d, 12.4) 62.0 5.07 (1H, d, 12.4) 17.6 2.29 (3H, s)
   5.17 (1H, d, 12.4)   5.20 (1H, d, 12.4)   
11 170.8 170.2    
12 21.2 2.04 (3H, s) 20.7 2.03 (3H, s)   
4a 141.3 138.9 138.6  
8a 108.2 107.4 107.1  
OH-4   5.70 (1H, d, 7.2)   5.96 (1H, d, 5.2) 5.82 (1H, d, 5.2)
OH-8   11.20 (1H, s)   11.19 (1H, s) 10.9 (1H, s)
  1. Chemical shift values are expressed in ppm