Table 2.
1H and 13C NMR data of compounds 1 and 4 (in CDCl3).
| Position | 2 | 3 | |||
|---|---|---|---|---|---|
| δ C | δH (J in Hz) | δ C | δH (J in Hz) | ||
| 1 | 8.85 s | 8.89 s | |||
| 2 | 134.0 | 133.9 | |||
| 3 | 191.5 | 190.8 | |||
| 5 | 56.7 | 3.97 m | 56.7 | 2.70 m | |
| 6a | 20.1 | 3.24 d (14.7, 10.0) | 18.5 | 3.30 dd (14.6, 8.2) | |
| 6b | 3.38 dd (14.7, 8.2) | 3.46 dd (14.6, 9.8) | |||
| 7 | 120.4 | 120.7 | |||
| 8 | 128.5 | 128.6 | |||
| 9 | 120.9 | 7.70 d (8.0) | 120.9 | 7.70 d (8.2) | |
| 10 | 120.3 | 7.15 t (8.0) | 120.3 | 7.14 t (8.2) | |
| 11 | 111.7 | 7.33 m (8.0) | 111.7 | 7.32 m | |
| 12 | 126.7 | 7.33 m (8.0) | 126.6 | 7.32 m | |
| 13 | 136.3 | 136.3 | |||
| 14a | 39.3 | 2.16 dd (13.0, 6.9) | 45.7 | 2.75 d (12.2, 6.9) | |
| 14b | 3.12 d (13.0) | 3.43 d (12.2) | |||
| 15 | 30.6 | 2.89 m | 31.8 | 2.23 dd (10.5, 5.2) | |
| 16 | 49.1 | 2.59 dd (12.7, 4.3) | 43.5 | 3.01 t (3.3) | |
| 18 | 11.4 | 1.01 t (7.4) | 12.8 | 0.97 t (7.2) | |
| 19a | 23.5 | 1.36 m | 25.4 | 1.52 m | |
| 19b | 1.72 m | ||||
| 20 | 43.5 | 1.89 m | 42.6 | 1.51 m | |
| 21a | 48.8 | 2.59 d (12.3, 4.3) | 46.6 | 2.48 d (12.9) | |
| 21b | 2.78 t (12.3) | 3.19 dd (12.9, 3.8) | |||
| N-CH3 | 42.6 | 2.62 s | 43.1 | 2.56 s | |
| COOCH3 | 50.4 | 2.64 s | 50.3 | 2.61 s | |
| COOCH3 | 171.4 | 172.1 | |||