Table 2.
1H NMR data of compounds 1 and 2, δ in ppm, J in Hz.
| Position | 1 a | 2 | |
|---|---|---|---|
| In CDCl3 a | In Acetone-d6 b | ||
| 1 | 3.47, ddd (10.4, 9.6, 9.2) | ||
| 4 | 4.45, dd (4.4, 2.0) | 4.32, dddd (7.8, 6.0, 1.8, 1.8) | |
| 5 | 2.35, s | β: 1.87, dd (14.0, 4.4) α: 2.08, dd (14.4, 2.0) |
β: 1.85, dd (12.6, 7.8) α: 2.17, dd (12.6, 6.0) |
| 7 | 4.05, d (9.2) | β: 2.43, dt (16.0, 3.2) α: 2.61, dt (16.0, 2.0) |
β: 2.45, ddd (16.8, 3.6, 3.0) α: 2.54, ddd (16.8, 3.6, 2.4) |
| 8 | 3.16, dddd (9.6, 9.6, 9.2, 9.2) | ||
| 9 | β: 1.55, ddd (12.8, 9.2, 2.0) α: 1.92, dd (12.8, 9.6) |
||
| 11 | β: 1.63, dd (12.8, 10.4) α: 1.87, ddd (12.8, 9.2, 2.0) |
2.31, dd (3.2, 2.0) | β: 2.27, ddd (18.0, 3.6, 3.0) α: 2.36, ddd (18.0, 3.6, 2.4) |
| 12 | β: 4.29, d (13.6) α: 4.34, d (13.6) |
1.31, s | 1.28, s |
| 13 | 1.33, s | 5.35, s 5.10, s |
5.23, d (1.8) 5.07, d (1.8) |
| 14 | 1.16, s | 1.12, s | 1.00, s |
| 15 | 1.01, s | 1.06, s | 1.07, s |
| 4-OH | 2.97, brs | 4.16, brs | |
| 6-OH | 2.97, brs | 2.98, brs | |
| 7-OH | 2.15, brs | ||
| 12-OH | 2.15, brs | ||
a Measured at 400 MHz; b Measured at 600 MHz.