1H NMR data for compounds 1–6 (δ in ppm, J values in Hz)a.
| No. | 1 | 2 | 3 | 4 | 5 | 6 |
|---|---|---|---|---|---|---|
| 1 | ||||||
| 2 | 4.16, dd (12.4, 6.8) | 2.30, m | 2.42, m | 2.44, overlap | 2.40, m | 2.49, d (18.0) |
| 2.26, m | 2.26, m | 2.26, m | 2.31, m | |||
| 3 | 2.22, m | 2.00, m | 2.02, overlap | 2.02, m | 2.03, overlap | 1.98, m |
| 1.47, overlap | 1.56, overlap | 1.88, overlap | 1.53, overlap | 1.86, overlap | 1.73, m | |
| 4 | 2.13, m | 2.13, m | 2.03, overlap | 2.11, m | 2.01, overlap | 2.16, m |
| 1.79, m | 1.70, m | 1.86, overlap | 1.77, m | 1.85, overlap | 1.56, overlap | |
| 5 | 3.79, dt (10.8, 4.0) | 3.79, m | 4.32, m | 3.23, m | 4.34, br s | 4.26, m |
| 6 | 2.48, d (10.8) | 2.48, m | 2.80, m | 2.46, overlap | 2.52, br s | |
| 7 | 4.35, br s | 4.36, br s | 4.37, m | 3.76, m | 4.46, m | 6.46, br s |
| 8 | 3.14, dd (9.6, 2.4) | 3.14, dd (9.6, 3.2) | 3.32, m | 3.08, overlap | 1.51, m | 3.92, m |
| 9 | 3.54, m | 3.53, m | 3.49, m | 3.10, overlap | 3.72, m | 3.26, m |
| 10 | 1.79, overlap | 1.79, m | 1.70, m | 1.80, m | 1.40, overlap | 1.82, m |
| 1.37, overlap | 1.37, overlap | 1.32, overlap | 1.37, overlap | 1.29, overlap | 1.42, overlap | |
| 11 | 1.57, overlap | 1.59, overlap | 1.51, m | 1.56, overlap | 1.39, overlap | 1.60, overlap |
| 1.36, overlap | 1.36, overlap | 1.31, overlap | 1.36, overlap | 1.32, overlap | 1.42, overlap | |
| 12 | 0.93, t (7.2) | 0.93, t (7.2) | 0.91, t (7.2) | 0.93, t (7.2) | 0.90, t (6.8) | 0.96, t (7.2) |
a
Measured at 400 MHz in methanol-d4.