Table 1.
1H (400 MHz) and 13C (100 MHz) NMR data for compounds 1–3.
| NO. | 1 a | 2 a | 3 b | |||
|---|---|---|---|---|---|---|
| δH (J in Hz) | δC | δH (J in Hz) | δC | δH (J in Hz) | δC | |
| 1 | 167.8 | 167.0 | ||||
| 2 | 4.21, m | 68.8 | ||||
| 3 | 1.68, ddd (4.1,12.0, 14.4) 2.01, dt (1.9, 14.4) |
38.9 | 155.9 | 156.7 | ||
| 4 | 5.04, dd (1.9, 4.1) | 60.1 | 6.31, s | 105.8 | 6.40, s | 106.7 |
| 4a | 116.1 | 141.2 | 140.5 | |||
| 5 | 158.6 | 6.58, d (1.8) | 104.5 | 6.70, d (2.1) | 104.3 | |
| 6 | 6.72, d (8.2) | 107.9 | 166.1 | 165.9 | ||
| 7 | 7.12, t (8.2) | 130.5 | 6.62, d (1.8) | 103.9 | 6.89, d (2.1) | 103.7 |
| 8 | 6.49, d (8.2) | 112.0 | 164.5 | 164.1 | ||
| 8a | 157.4 | 101.4 | 101.5 | |||
| 9 | 1.40, d (6.3) | 21.6 | 2.22, s | 19.4 | 2.67, dd (4.9, 14.3) 2.74, dd (7.8, 14.3) |
44.3 |
| 10 | 4.45, m | 65.4 | ||||
| 11 | 1.40, d (6.2) | 24.4 | ||||
| 1′ | 5.70, d (4.5) | 103.4 | 5.74, d (4.4) | 101.8 | 6.17, d (4.2) | 102.1 |
| 2′ | 4.23, dd (4.5, 6.4) | 73.9 | 4.24, dd (4.4, 6.2) | 73.6 | 4.87, m | 74.1 |
| 3′ | 4.10, dd (2.6, 6.4) | 71.4 | 4.12, dd (3.0, 6.2) | 71.2 | 4.85, m | 71.3 |
| 4′ | 4.20, m | 88.5 | 4.15, m | 88.3 | 4.88, m | 89.0 |
| 5′ | 3.64, dd (3.9, 12.1) 3.69, dd (3.6, 12.1) |
63.5 | 3.65, dd (3.8, 12.1) 3.72, dd (3.3, 12.1) |
63.3 | 4.12, dd (3.8, 12.0) 4.17, dd (3.7, 12.0) |
63.4 |
a Measured in CD3OD; b measured in C5D5N.