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Table 1 NMR data of the new compounds (13) isolated from Tirpitzia sinensis (δ in ppm, 1H NMR 600 MHz; 13C NMR 151 MHz)

From: Three new compounds with nitric oxide inhibitory activity from Tirpitzia sinensis, an ethnomedicinal plant from Southwest China

Position Compound 1 (in CD3OD) Compound 2 (in CD3OD) Compound 3 (in DMSO)
13C NMR 1H NMR 13C NMR 1H NMR 13C NMR 1H NMR
1 134.8    132.9
2 110.7 6.94 (1H, s, overlapped) 166.2 152.7
3 149.3 104.1 6.65 (1H, s) 104.5 6.61 (1H, s)
4 147.7 184.4 138.2
5 116.3 6.76 (1H, d, 8.1) 164.9 104.5 6.61 (1H, s)
6 119.9 6.83 (1H, dd, 8.1, 1.3) 110.5 152.7
7 89.3 5.53 (1H, d, 6.2) 166.2 62.9 4.40 (2H, d,4.2)
8 55.5 3.52 (1H, dt, 12.6, 5.3) 95.6 6.53 (1H, s) 56.2 3.37 (3H, s)
9 65.0 3.78 (1H, m); 3.83 (1H, m) 158.7 56.2 3.73 (3H, s)
10 56.6 3.81 (3H, s) 105.4 56.2 3.73 (3H, s)
11      108.5 5.32 (1H, d, 1.1)
12      74.0 3.51 (1H, d, 9.2)
13      76.6 3.79 (1H, d, 3.4)
14      79.3 5.19 (1H, m)
1′ 136.9 123.6 100.7 4.93 (1H, d, 7.3)
2′ 112.7 6.93 (1H, s, overlapped) 110.5 7.48 (1H, d, 8.1) 77.1 3.46 (1H, m)
3′ 145.4 149.5 70.1 3.46 (1H, m)
4′ 149.1 152.3 64.6 3.19 (1H, dq, 10.8, 3.9)
5′ 129.9 116.7 6.94 (1H, d, 8.3) 76.8 3.57 (1H, ddd, 11.7, 4.6, 2.3)
6′ 117.0 6.92 (1H, s) 121.5 7.51 (1H, dd, 8.4, 1.4) 61.0 3.86 (1H, d, 9.3); 3.02 m
7′ 75.6 4.62 (1H, d, 6.2) 56.3 3.96 (3H, s)   
8′ 76.1 3.83 (1H, m)     
9′ 78.1 3.52 (1H, dt, 12.6, 6.2); 3.92 (1H, d, 2.5)     
10′ 56.9 3.88 (3H, s)     
1′′ 111.1 4.88 (1H, d, 2.6) 73.5 4.95 (1H, d, 11.3)   
2′′ 70.7 3.46 (1H, dd, 10.4, 4.2) 72.1 3.58 (1H, m)   
3′′ 80.6 82.5 3.42 (1H, m)   
4′′ 75.1 3.71 (1H, d, 3.6); 3.95 (1H, d, 5.5) 81.1 3.46 (1H, m)   
5′′ 65.5 3.58 (2H, d, 2.9) 101.9 3.73 (1H, m)   
6′′    69.8 3.89 (1H, d, 1.7); 3.87 (1H, m)   
1′′′    102.4 5.23 (1H, s)   
2′′′    72.1 3.87 (1H, m)   
3′′′    72.5 3.12 (1H, t, 9.3)   
4′′′    69.5 2.57 (1H, dd, 9.3, 6.2)   
5′′′    71.8 3.41 (1H, m)   
6′′′    17.2 0.75 (1H, d, overlapped)