Table 1.
1H NMR Data for 1–7 (500 MHz, in CDCl3, δ in ppm, J in Hz).
| Position | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
|---|---|---|---|---|---|---|---|
| 1 (β) | 1.03, d (6.8) | 1.03, d (6.8) | 1.03, d (6.8) | 1.05, d (6.8) | 1.02, d (6.8) | 1.02, d (6.8) | 1.04, d (6.8) |
| 2 (α) | 1.56, m | 1.55, m | 1.59, m | 1.60, m | 1.50, m | 1.54, m | 1.60, m |
| 4a | 1.67, m | 1.69, m | 1.67, m | 1.69, m | 1.68, m | 1.68, m | 1.68, m |
| 4b | 1.56, m | 1.56, m | 1.55, m | 1.56, m | 1.59, m | 1.58, m | 1.55, m |
| 5a | 1.88, m | 1.88, m | 1.85, m | 1.88, m | 1.89, m | 1.89, m | 1.85, m |
| 5b | 1.63, m | 1.56, m | 1.54, m | 1.55, m | 1.49, m | 1.40, m | 1.55, m |
| 6 (β) | 1.97, m | 1.89, m | 1.85, m | 1.87, m | 1.95, m | 2.00, m | 1.84, m |
| 8a | 2.12, m | 1.73, m | 1.44, m | 1.57, m | 1.75, m | 1.86, m | 1.50, t (8.3) |
| 8b | 1.89, m | 1.59, m | 1.64, m | 1.69, m | |||
| 9a | 2.51, m | 1.61, m | 1.44, m | 1.68, m | 1.92, m | 1.83, m | 2.16, m |
| 9b | 1.40, m | 1.71, m | 1.79, m | ||||
| 10 | 3.38, br d (10.3) a | 1.45, m | 3.68, m | 4.07, ddd (7.6, 6.9, 4.1) | 4.04, ddd (9.8, 5.6, 4.3) | 5.41, t (7.3) | |
| 11 | 1.93, m | 2.00, m | |||||
| 12 | 1.30, s | 1.16, s | 1.22, s | 0.93, d (7.0) | 0.90, d (7.1) | 1.74, br s | |
| 13 (α) | 1.25, s | 1.25, s | 1.25, s | 1.26, s | 1.24, s | 1.25, s | 1.25, s |
| 14 | 1.19, s | 1.15, s | 1.16, s | 1.17, s | 1.14, s | 1.17, s | 1.16, s |
| 15a | 1.29, s | 1.21, s | 1.22, s | 3.65, d (10.8, 6.1) | 3.69, dd (10.8, 6.9) | 4.62, d (11.9) | |
| 15b | 3.61, d (10.8, 4.1) | 3.58, dd (10.8, 3.7) | 4.57, d (11.9) | ||||
| CH3CO | 2.06, s |
a H-10 is coupled with H-9a and H-9b, but one of the couplings only results in broad resonance.