1H NMR (500 MHz) and 13C NMR (125 MHz) data of compounds 1–4.
| No. | 1a | 2b | 3b | 4A/4Bb | ||||
|---|---|---|---|---|---|---|---|---|
| δ H (J in Hz) | δ C | δ H (J in Hz) | δ C | δ H (J in Hz) | δ C | δ H (J in Hz) | δ C | |
| 1 | 8.32, d (8.5) | 123.2 | 5.19, dd (5.5, 12.0) | 78.0 | 5.19, dd (5.5, 12.0) | 77.8 | 5.22, dd (5.5, 11.5) | 77.8 |
| 2 | 7.65, dd (6.5, 8.5) | 127.8 | 2.39, m, 1.62, m, 1.62, m | 26.3 | 2.39, m, 1.62, m | 26.3 | 2.40, m, 1.62, m | 26.3 |
| 3 | 7.61, d (6.5) | 130.5 | 1.92, m, 1.85, m | 38.0 | 1.92, m, 1.85, m | 38.2 | 1.92, m, 1.86, m | 37.1 |
| 4 | 133.5 | 34.9 | 34.9 | 34.9 | ||||
| 5 | 135.9 | 144.6 | 144.8 | 144.1 | ||||
| 6 | 8.30, d (8.5) | 128.4 | 7.55, d (8.0) | 131.1 | 7.55, d (8.0) | 131.5 | 7.65, d (8.0) | 131.2 |
| 7 | 7.79, d (8.5) | 118.3 | 7.47, d (8.0) | 130.0 | 7.47, d (8.0) | 130.0 | 7.52, d (8.0) | 130.3 |
| 8 | 129.2 | 126.9 | 126.8 | 126.5 | ||||
| 9 | 148.9 | 122.9 | 123.2 | 123.0 | ||||
| 10 | 136.4 | 148.0 | 148.0 | 148.3 | ||||
| 11 | 78.9 | 168.5 | 168.5 | 168.9 | ||||
| 12 | 83.4 | 170.1 | 170.1 | 169.0 | ||||
| 13 | 202.0 | 111.5 | 111.6 | 122.5 | ||||
| 14 | 173.0 | 163.3 | 163.0 | 154.0 | ||||
| 15 | 3.95, dd (3.5, 12.0), 3.15, t (12.0) | 68.2 | 4.72, t, (9.0), 4.23, dd (5.5, 9.0) | 78.9 | 4.70, t (9.0), 4.24, dd (5.5, 9.0) | 78.9 | 7.32, s | 140.6 |
| 16 | 2.28, m | 40.5 | 3.49, m | 37.2 | 3.40, m | 37.1 | 117.0 | |
| 17 | 0.93, d (7.5) | 11.3 | 1.34, d (6.5) | 19.6 | 1.38, d, (7.0) | 20.0 | 2.23, s | 10.1 |
| 18 | 2.72, s | 19.6 | 1.44, s | 31.8 | 1.44, s | 31.8 | 1.45, s | 31.8 |
| 19 | 1.19, s | 30.9 | 1.19, s | 31.0 | 1.22, s | 31.0 | ||
| OH-11 | 6.70, s | |||||||
| OH-12 | 6.34, s | |||||||
a
Data were measured in DMSO-d6.
b
Data were measured in CDCl3.