Table 2.
1H (500 MHz) NMR data of 2–6 in CDCl3
| No. | 2 | 3 | 4 | 5 | 6 |
|---|---|---|---|---|---|
| 5 | 5.07 s | ||||
| 7 | 2.71 ddd (11.8, 7.7, 4.2) | 2.95 ddd (11.4, 7.0, 3.8) | 2.74 td (9.5, 4.0) | 2.68 ddd (11.3, 7.6, 4.1) | 2.59 ddd (11.2, 6.8, 4.6) |
| 8 | 2.76 m | 2.49 m | 2.67 m | 2.92 m | 2.84 m |
| 9 | 0.91 d (7.1) | 0.96 d (7.0) | 0.98 d (7.0) | 0.93 d (7.0) | 0.90 d (7.0) |
| 10 | 0.54 d (6.9) | 0.58 d (7.0) | 0.70 d (6.9) | 0.61 d (7.0) | 0.62 d (7.0) |
| 11 | 1.81 s | 1.43 s | 1.41 s | 1.26 s | 1.26 s |
| 12 | 1.29 s | 1.32 s | 1.34 s | 1.23 s | 1.22 s |
| 13 | 1.19 s | 1.59 s | 1.68 s | 1.83 s | |
| 2′ | 1.08 dd (7.8, 3.3) | 1.26 dd (8.0, 3.6) | 1.17 dd (8.0, 3.4) | 1.13 m | 1.22 overlapped |
| 3′a | 0.75 dd (5.2, 3.3) | 0.86 dd (5.0, 3.6) | 0.91 dd (5.1, 3.7) | 0.86 dd (5.3, 3.6) | 0.48 dd (8.4, 5.4) |
| 3′b | 0.44 dd (7.8, 5.2) | 0.40 dd (8.0, 5.0) | 0.55 dd (8.0, 5.1) | 0.52 dd (7.7, 5.3) | 0.35 dd (5.4, 3.7) |
| 5′a | 1.60 2H m | 1.74 2H m | 1.71 m | 1.66 2H m | 1.82 overlapped |
| 5′b | 1.65 m | 1.54 brdd (12.2, 7.9) | |||
| 6′a | 1.71 br dd (12.8, 6.6) | 1.90 m | 1.74 m | 1.70 m | 1.66 m |
| 6′b | 0.96 q-like (11.3) | 1.73 m | 1.19 m | 1.14 overlapped | 1.04 ddd (11.4, 6.8, 3.4) |
| 7′a | 1.68 2H m | 1.84 brd (7.2) | 1.79 2H dd (9.4, 0.7) | 1.79 dd (13.3, 7.6) | 1.76 brd (11.1) |
| 7′b | 1.72 brd (6.7) | 1.14 dd (7.6, 3.7) | 1.65 m | ||
| 8′ | 1.34 hept (6.9) | 1.30 hept (6.9) | 1.40 hept (6.9) | 1.39 hept (6.9) | 1.40 hept (6.9) |
| 9′ | 0.89 d (6.9) | 0.92 d (6.9) | 0.95 d (6.9) | 0.95 d (6.9) | 1.02 d (6.9) |
| 10′ | 0.84 d (6.9) | 0.90 d (6.9) | 0.90 d (6.9) | 0.90 d (6.9) | 0.97 d (6.9) |
| OMe-4 | 3.78 s | 3.65 s | 3.77 s |