Table 1.
1H-NMR Data for compounds 3–7 in CDCl3 (400 MHz, δ ppm, J in Hz).
| No. | 3 | 4 | 5 | 6 | 7 |
|---|---|---|---|---|---|
| 5 | 4.85, s | 4.69, s | 4.89, s | 4.89, d (3.5) | 4.91, s |
| 6 | 6.23, dd (1.6, 16.0) | 6.12, dd (1.0, 15.8) | 6.51, dt (1.8, 16.0) | 6.08, dd (1.5, 15.7) | 6.28, dd (1.5, 16.0) |
| 7 | 6.92, m | 6.87, m | 7.08, m | 6.97, m | 6.99, m |
| 8 | 1.89, d (6.8) | 1.87, d (6.6) | 4.36, d (4.8) | 1.86, d (6.3) | 1.94, d (6.8) |
| 9 | 6.54, d (16.0) | 2.61, m | 6.59, d (16.0) | 4.87, d (4.0) | 6.70, d (16.0) |
| 10 | 6.07, dt (6.6, 16.0) | 1.64, m | 6.13, dt (6.6, 16.0) | 3.87, dt (4.0, 8.1) | 6.08, dt (7.2, 16.0) |
| 11 | 2.28, m | 3.84, dt (6.2, 12.3) | 2.30, m | 1.40, m | 2.57, q (6.1) |
| 12 | 1.10, t (7.4) | 1.26, dd (0.6, 6.8) | 1.10, t (7.4) | 1.00, t (7.4) | 3.84, t (6.1) |