Table 2.
No. | 1 a | 2 b | 3 a | 4 b |
---|---|---|---|---|
1 | 4.48, dd (10.0, 2.0) | 4.72, dd (10.5, 1.3) | ||
2 | 6.36, d (5.0) | 6.63, d (6.4) | 3.63, m (10.0, 9.4, 5.0) | 3.36, ddd (10.5, 7.3, 3.7) |
3 | 5.50, dd (5.0, 5.0) | 4.14, ddd (6.4, 5.3, 4.2) | 1.61, m | 5.23, dd (3.7, 3.7) |
4 | 2.12, m | 1.80, qd (7.0, 4.2) | 2.04, m | 1.74, qd (6.9, 3.7) |
6 | 6.28, s | a: 2.33, d (14.6) | a: 2.88, d (13.7) | a: 1.89, d (14.4); |
b: 1.89, d (15.1) | b: 2.26, d (13.7) | b: 1.83, d (14.4) | ||
9 | 6.76, s | 6.28, s | 6.41, d (2.0) | 5.94, d (1.3) |
11 | 1.42, s | |||
12 | 1.18, d (6.8) | 3.70, dd (6.0, 5.8) | 2.11, s | a: 3.89, d (10.4); |
b: 3.53, d (10.4) | ||||
13 | 1.39, s | 1.87, s | 1.35, s | |
14 | 2.13, s | 1.20, brs | 1.04, s | 1.19, s |
15 | 1.04, d (7.0) | 1.02, d (6.4) | 0.84, d (6.9) | |
16 | 3.30, s | |||
18 | 2.08, s | |||
2-OH | 5.69, d (7.3) | |||
3-OH | 5.27, d (5.3) | |||
7-OH | 6.32, brs | |||
12-OH | 4.81, t (5.8) |
a Resolved in CDCl3. b Resolved in DMSO.