Table 2.
The 1H NMR (400 MHz) data of compounds, 1-4 in CD3OD.
| Position | 1 | 2 | 3 | 4 |
|---|---|---|---|---|
| δH (J in Hz) | ||||
| 2 | 7.09, s | 7.07, s | ||
| 3 | 6.70, d (7.8) | 6.70, d (7.8) | ||
| 4 | 6.81, br d (8.1) | 6.87, t (7.8) | 6.87, t (7.8) | 6.79, br d (8.3) |
| 5 | 7.14, br d (8.1) | 7.10, d (7.8) | 7.12, d (7.8) | 7.17, d (8.3) |
| 7 | 2.35, dd (11.6, 11.6) | 2.52, overlap | 2.53, dd (13.0, 14.6) | 2.35, overlap |
| 2.66, overlap | 2.81, overlap | 2.82, overlap | 2.66, overlap | |
| 11 | 2.70, overlap | 2.84, m | 2.82, m | 2.80, m |
| 12 | 1.63, m | 1.70, m | 1.70, m | 1.74, m |
| 2.01, m | 2.04, m | 2.10, m | 2.06, m | |
| 13α | 1.63, overlap | 1.77, overlap | 2.07, m | 2.07, m |
| 13β | 1.60, overlap | 1.70, overlap | 1.98, m | 1.97, m |
| 16α | 2.47, m | 2.48, m | 2.38, dd (17.7, 6.5) | 2.38, overlap |
| 16β | 1.73, m | 1.75, m | 3.18, br d (17.7) | 3.18, br d (17.7) |
| 17α | 2.53, m | 2.55, m | 5.75, m | 5.75, m |
| 17β | 1.99, m | 1.99, m | ||
| 20 | 5.80, s | 5.87, s | 5.96, s | 5.95, s |
| 22 | 4.05, s | 4.07, s | 4.12, s | 4.12, s |
| 24 | 1.31, s | 1.32, s | 1.32, s | 1.32, s |
| 25 | 1.30, s | 1.31, s | 1.26, s | 1.26, s |
| 26 | 0.85 | 1.02 | 1.09 | 1.07 |
| 27 | 1.28, s | 1.32, s | 1.35, s | 1.35, s |
| 1’ | 3.37, d (7.6) | 3.57, m | 3.56, m | 3.36, d (7.6) |
| 2’ | 5.38, br t (7.6) | 5.36, br t (7.2) | 5.36, br t (7.2) | 5.36, br t (7.6) |
| 4’ | 1.74, br s | 1.74, br s | 1.73, br s | 1.74, br s |
| 5’ | 1.75, br s | 1.76, br s | 1.76, br s | 1.74, br s |