Table 3. 1H NMR Data (500 MHz) for 5–8 in CDCl3a.
position | 5 | 6 | 7 | 8 |
---|---|---|---|---|
1 | 1.32, d (6.3) | 1.28, d (6.3) | 1.30, d (6.3) | 1.34, d (6.3) |
2 | 5.15, m | 5.13, m | 5.23, m | 5.08, m |
3 | 1.58, m | 1.50, m | 1.60, m | 1.74, m |
1.68, m | 1.66, m | 1.82, m | ||
4 | 1.24, m | 1.38, m | 1.33b, m | 1.25, m |
1.51, m | 1.50, m | 1.75, m | ||
5 | 1.31, m | 1.45, m | 1.21, m | 3.55, m |
1.39, m | 1.36, m | |||
6 | 1.56, m | 1.68, m | 1.34b, m | 1.61, m |
1.83, m | ||||
7 | 2.23, m | 2.25, m | 1.25, m | 2.25, m |
2.35, m | ||||
8 | 6.85, dt | 7.06, dt | 1.54, m | 6.78, ddd |
(16.0, 7.5) | (16.0, 7.5) | 1.64, m | (15.5, 9.2, 6.9) | |
9 | 6.10, d (16.0) | 6.17, d (16.0) | 2.32, m | 6.08, d (15.5) |
2.56, m | ||||
11 | 3.44, d (14.9) | 3.92, d (17.2) | 3.48, d (17.8) | 3.85, d (17.2) |
4.34, d (14.9) | 4.39, d (17.2) | 4.29, d (17.8) | 4.21, d (17.2) | |
13 | 6.47, d (2.3) | 6.15, d (2.3) | 6.17, d (2.3) | |
15 | 6.31, d (2.3) | 6.32, d (2.3) | 6.19, d (2.3) | 6.59, s |
19 | 3.74, s | 3.71, s | 3.80, s | |
14–OH | 7.89, br s | 6.16, s | 7.25, br s | 5.86, s |
16–OH | 11.76, s |
δ in ppm, mult (J in Hz).
Signals may be interchanged.