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Table 1 1H NMR and 13C NMR data of antimalarial drug 3-amino-7,9-dihydroxy-1-methyl-6H-benzo[c]chromen-6-one (δ in ppm, J in Hz and NMR solvent DMSO-d6)

From: A novel fungal metabolite inhibits Plasmodium falciparum transmission and infection

Position 1H NMR data (400 MHz) 13C NMR data (100 MHz) Structure
1 138.2
1
2 6.69 (d, J = 2.1 Hz, 1H) 108.9
3 152.6
4 6.61 (d, J = 2.2 Hz, 1H) 100.8
5 158.4
6 101.6
7 164.6
8 6.34 (d, J = 1.2 Hz, 1H) 97.3
9 164.0
10 7.21 (s, 1H) 104.3
11 138.0
12 117.5
13 165.4
–CH3 2.67 (s, 3H) 25.1
–NH2 10.61 (s, br, 2H)  
–OH 11.76 (s, 1H), 5.74 (s, 1H)