Table 4. 1H NMR Data (500 MHz) for 9–11a.
| position | 9b | 10c | 11b |
|---|---|---|---|
| 1 | 1.30, d (6.3) | 1.21, d (5.7) | 1.33, d (6.3) |
| 2 | 5.13, m | 4.91, m | 5.24, m |
| 3 | 1.75, m | 1.51, m | 1.69, m |
| 1.76, m | |||
| 4 | 1.11, m | 1.06, m | 1.24, m |
| 1.66, m | 1.52, m | 1.61, m | |
| 5 | 3.48, m | 3.35, m | 3.70, m |
| 6 | 1.61, m | 1.41, m | 1.47, m |
| 1.77, m | 1.68, m | 1.56, m | |
| 7 | 2.12, m | 2.15, m | 1.37, m |
| 3.48, m | |||
| 8 | 6.08, ddd | 6.64, ddd | 1.53, m |
| (16.0, 11.5, 4.6) | (16.0, 8.0, 7.5) | 1.75, m | |
| 9 | 6.30, dd | 5.95, d (16.0) | 2.29, ddd |
| (11.5, 1.7) | (13.8, 9.7, 3.4) | ||
| 2.66, ddd | |||
| (13.8, 8.6, 2.9) | |||
| 11 | 4.03, d (18.3) | 3.36, d (16.0) | 3.88, d (18.3) |
| 4.16, d (18.3) | 4.03, d (16.0) | 4.25, d (18.3) | |
| 13 | 6.25, d (2.3) | ||
| 15 | 6.58, s | 6.35, d (2.3) | 6.56, s |
| 19 | 3.77, s | 3.68, s | 3.77, s |
| 5-OH | 1.2 br s | 4.48, br s | 3.76 |
| 14-OH | 5.80, s | 9.99, br s | 5.87, s |
a
δ in ppm, mult (J in Hz).
b
In CDCl3.
c
In DMSO-d6.