Table 3.
1H NMR data (δ in ppm, J in Hz) for compounds 7–10 in CDCl3.
| No. | 7 a | 8 b | 9 a | 10 a |
|---|---|---|---|---|
| δH Mult (J Hz) | δH Mult (J Hz) | δH Mult (J Hz) | δH Mult (J Hz) | |
| 1 | 2.64 m | 2.47 t (9.5) | 1.86 m | 1.87 t (9.6) |
| 2a | 1.84 dt (15.0, 3.6) | 1.83 m | 1.97 m | 1.74 dt (14.4, 4.2) |
| 2b | 1.64 m | 1.59 m | 1.56 m | 1.65 m |
| 3a | 2.15 dt (13.2, 3.6) | 2.12 m | 2.57 dt (13.2, 4.2) | 2.16 dt (13.2, 3.6) |
| 3b | 1.09 td (13.2, 4.8) | 1.10 td (13.0, 5.0) | 1.95 m | 1.00 td (13.2, 4.8) |
| 5 | 2.76 dd (10.2, 4.2) | 2.88 dd (10.5, 4.5) | 4.12 dd (9.6, 3.6) | 2.83 dd (10.2, 4.2) |
| 6a | 2.40 m | 2.25 m | 1.95 m | 2.24 m |
| 6b | 1.46 m | 1.33 m | 1.79 m | 1.35 m |
| 7a | 2.57 m | 2.30 m | 2.35 ddd (14.4, 10.2, 4.2) | 2.35 m |
| 7b | 2.13 m | 2.09 m | 2.09 m | |
| 9 | 3.08 q (9.0) | 2.75 q (9.5) | 1.88 m | 2.88 q (9.6) |
| 10a | 2.63 m | 2.15 m | 2.00 m | 2.02 m |
| 10b | 1.79 dd (11.4, 7.8) | 1.90 dd (11.0, 8.0) | 1.93 m | |
| 12 | 1.24 s | 1.27 s | ||
| 13 | 2.65 m | 6.98 s | ||
| 14a | 2.73 m | 6.98 s | 4.83 s | 5.02 s |
| 14b | 4.79 s | 4.93 s | ||
| 15a | 5.05 s | 1.25 s | ||
| 15b | 4.96 s | |||
| 16 | 2.19 s | 2.36 s | ||
| 18 | 1.34 s | 1.34 s | ||
| 19a | 5.00 s | |||
| 19b | 4.93 s | |||
| 20 | 1.30 s | 1.22 s |
a Recorded at 600 MHz. b Recorded at 500 MHz. Chemical shifts (ppm) refer to CHCl3 (δH 7.26). Assignments were deduced by analysis of 1D and 2D NMR spectra.