Table 1.
1H NMR data (δ in ppm, J in Hz) of compounds 1–3
| No. | 1a | 2a | 3b |
|---|---|---|---|
| δH, mult (J) | δH, mult (J) | δH, mult (J) | |
| 1 | 2.60 (dt, 10.2, 4.4) | ||
| 2 | 2.58 (m) | 1.67 (overlap) | |
| 3 | β 1.97 (ddd, 12.0, 5.8, 3.6) | β 1.31 (m) | 7.72 (d, 7.9) |
| α 1.29 (overlap) | α 1.67 (overlap) | ||
| 4 | 3.63 (ddd, 11.9, 9.6, 3.6) | 3.57 (td, 10.8, 4.5) | 7.43 (d, 7.9) |
| 5 | 2.10 (ddd, 9.6, 3.5, 2.1) | 2.30 (d, 10.8) | |
| 6 | |||
| 7 | β 1.74 (d, 13.0) | β 2.37 (dd, 15.6,2.3) | β 2.36 (d, 13.9) |
| α 1.30 (overlap) | α 2.16 (dd, 15.6, 2.3) | α 1.70 (d, 13.9) | |
| 8 | |||
| 9 | |||
| 10 | 4.33 (d, 11.9) | 3.69 (dd, 10.2, 4.4) | 5.55 (d, 15.7) |
| 4.04 (dd, 11.9, 2.1) | 3.45 (t, 10.2) | 5.46 (d, 15.7) | |
| 11 | 1.10 (d, 6.9) | 1.03 (d, 7.0) | |
| 12 | 0.97 (s) | 1.07 (s) | 3.61 (d, 10.8) |
| 3.58 (d, 10.8) | |||
| 13 | 1.18 (s) | 1.23 (s) | 1.34 (s) |
| 14 | 1.38 (s) | 4.05 (s) | 1.37 (s) |
| 15 | 3.30 (overlap) | 3.64 (s) |
aRecorded at 600 MHz, Recorded in CD3OD
bRecorded at 500 MHz, Recorded in CD3OD