Table 1. 1H, 13C- NMR and DEPT data for isolated compound biflavonoid (500 MHz, DMSO).
| Position | 1H-NMR | 13C-NMR | DEPT-135 |
|---|---|---|---|
| 2(2″) | 145.5 | ||
| 3(3″) | 136.2 | ||
| 4(4″) | 176.2 | ||
| 5(5″) | 161.1 | ||
| 6(6″) | 6.40 (s) | 98.6 | 98.6 |
| 7(7″) | 164.3 | ||
| 8(2″) | 98.6 | ||
| 9(9″) | 148.1 | ||
| 10(10″) | 103.4 | ||
| 1′(1‴) | 116.0 | ||
| 2′(2‴) | 7.68 (d, J = 5.6Hz) | 129.4 | 129.4 |
| 3′(3‴) | 6.88 (d, J = 6.8Hz) | 115.5 | 115.5 |
| 4′(4‴) | 156.6 | ||
| 5′(5‴) | 6.88 (d, J = 6.8Hz) | 115.5 | 115.5 |
| 6′(6‴) | 7.68 (d, J = 5.6Hz) | 129.4 | 129.4 |
| 3-OH(3″-OH) | 10.77 (s, br) | ||
| 5-OH(5″-OH) | 12.49 (s, br) | ||
| 7-OH(7″-OH) | 9.58 (s, br) | ||
| 4′-OH(4‴-OH) | 9.36 (s, br) |