Table 2.
1H NMR (700 MHz) data for FLT and products 1–4 measured in DMSO-d6.
| Position | FLT | Product 1 | Product 2 | Product 3 | Product 4 |
|---|---|---|---|---|---|
| 1 | 7.25 d (10.2) | 7.27 d (10.2) | 7.26 d (10.2) | 7.28 d (9.8) | 7.26 d (10.2) |
| 2 | 6.30 d (10.2) | 6.28 d (10.2) | 6.28 d (10.2) | 6.29 d (9.8) | 6.29 d (10.2) |
| 4 | 6.11 s | 6.09 s | 6.10 s | 6.10 s | 6.10 s |
| 6 | 5.63 ddd (49.0, 11.2, 7.0) | 5.62 ddd (49.0, 11.6, 6.9) | 5.63 ddd (49.0, 11.2, 7.0) | 5.63 ddd (49.0, 11.2, 7.0) | 5.63 ddd (49.0, 11.2, 7.0) |
| 7a | 1.51 m | 1.45 m | 1.49 m | 1.45 m | 1.50 m |
| 7b | 2.25 m | 2.20 m | 2.23 m | 2.21 m | 2.24 m |
| 8 | 2.56 m | 2.43 m | 2.53 m | 2.44 m | 2.52 m |
| 11 | 4.21 m | 4.13 d (10.5) | 4.16 m | 4.41 brd (8.4) | 4.17 d (11.2) |
| 12a | 1.87 d (12.6) | 1.53 d (11.9) | 1.69 d (14.0) | 1.54 d (14.0) | 1.65 d (14.7) |
| 12b | 2.12 m | 2.00 d (14.7) | 2.03 d (14.7) | 2.03 d (14.0) | 2.04 m |
| 14 | 2.10 m | 2.06 m | 2.06 m | 2.08 m | 2.07 m |
| 15a | 1.26 ddd (11.9, 8.4, 3.5) | 1.08 m | 1.17 m | 1.11 m | 1.20 m |
| 15b | 1.84 m | 1.65 q (11.9) | 1.78 q (11.9) | 1.67 q (11.9) | 1.80 q (11.9) |
| 16 | 3.29 m | 2.83 m | 3.15 m | 2.87 m | 3.18 m |
| 18 | 1.00 s | 0.98 s | 1.00 s | 0.93 s | 0.94 s |
| 19 | 1.48 s | 1.48 s | 1.49 s | 1.49 s | 1.48 s |
| 21 | 0.89 d (7.0) | 0.86 d (7.0) | 0.84 d (7.0) | 0.88 d (6.3) | 0.84 d (7.7) |
| 1′ | 2.37 q (7.4) | 2.30 q (7.7) | 2.32 q (7.7) | ||
| 2′ | 1.02 t (7.4) | 1.00 t (7.7) | 1.00 t (7.7) | ||
| CH2F | 5.93 d (56) | ||||
| OMe | 3.64 s | 3.60 s | |||
| 11-OH | 5.59 brd (4.9) | 5.38 brs | 5.48 brd (4.2) | 5.42 brs | 5.51 brd (3.5) |
Data are shown in ppm and J -values are shown in Hz. Positions show the number on the chemical structure of FLT in Fig. 6.