Table 1.
1H and 13C NMR data for 1 and 2.
|
1 |
2 |
|||
|---|---|---|---|---|
| 1Ha | 13Cb | 1Ha | 13Cb | |
| 1 | 148.3 (C) | 146.7 (C) | ||
| 2 | 6.06 d (10.8) | 118.2 (CH) | 6.19 d (10.8) | 118.7 (CH) |
| 3 | 6.15 d (10.8) | 125.7 (CH) | 6.29 d (10.8) | 124.4 (CH) |
| 4 | 129.3 (C) | 130.5 (C) | ||
| 5 | 3.20 d (13.6); 3.06 d (13.6) | 54.7 (CH2) | 3.90 d (13.6); 2.70 d (13.6) | 48.9 (CH2) |
| 6 | 209.8 (C) | 208.0 (C) | ||
| 7 | 2.54 dd (13.2, 8.4); 2.17 m | 51.2 (CH2) | 2.52 m; 2.12 m | 52.4 (CH2) |
| 8 | 2.03 m | 31.2 (CH) | 1.83 m | 32.0 (CH) |
| 9 | 1.48 m; 1.18 m | 33.1 (CH2) | 1.31 m; 1.14 m | 33.3 (CH2) |
| 10 | 1.92 m; 1.14 m | 26.4 (CH2) | 1.88 m; 1.09 m | 26.4 (CH2) |
| 11 | 2.71 dd (8.4, 4.0) | 62.7 (CH) | 2.49 m | 64.4 (CH) |
| 12 | 61.5 (C) | 60.6 (C) | ||
| 13 | 2.15 m; 1.32 m | 36.7 (CH2) | 2.12 m; 1.36 m | 36.7 (CH2) |
| 14 | 2.37 m; 2.28 m | 25.9 (CH2) | 2.73 m; 2.12 m | 25.7 (CH2) |
| 15 | 2.35 m | 32.2 (CH) | 2.35 m | 30.8 (CH) |
| 16 | 1.06 d (7.2) | 22.6 (CH3) | 1.18 d (6.8) | 20.6 (CH3) |
| 17 | 1.08 d (7.6) | 22.1 (CH3) | 1.02 d (6.8) | 23.4 (CH3) |
| 18 | 1.89 s | 18.2 (CH3) | 1.93 s | 25.1 (CH3) |
| 19 | 0.93 d (6.8) | 19.5 (CH3) | 0.85 d (6.4) | 19.2 (CH3) |
| 20 | 1.20 s | 17.6 (CH3) | 1.23 s | 16.3 (CH3) |
a
Spectra were recorded at 400 MHz in CDCl3; J values (Hz) are given in parentheses;
b
spectra were recorded at 100 MHz in CDCl3; attached protons were deduced by DEPT experiments.