Table 1 1H NMR (600 MHz) and 13C NMR data for compounds 1–4 (δ in ppm, J in Hz).
Position | 1 a | 2 a | 3 b | 4 b | ||||
|---|---|---|---|---|---|---|---|---|
1H | 13C c | 1H | 13C c | 1H | 13C d | 1H | 13C d | |
1 | 4.92 (dd, 10.6, 3.6) | 128.4 | 4.90 (m) | 129.2 | 5.01 (brs) | 128.7 | 5.27 (d, 7.9) | 130.7 |
2 | 2.06 (m) | 26.9 | 2.16 (m) | 28.4 | 2.16 (m) | 27.0 | 2.14 (m) | 29.3 |
2.20 (ddd, 24.0, 12.0, 3.3) | 2.16 (m) | 2.16 (m) | 2.22 (m) | |||||
3 | 2.89 (m) | 31.0 | 3.00 (m) | 32.6 | 3.01 (m) | 30.8 | 2.40 (m) | 36.2 |
2.11 (m) | 2.10 (m) | 2.14 (m) | 2.12 (m) | |||||
4 | 148.7 | 151.4 | 150.6 | 140.3 | ||||
5 | 6.37 (s) | 130.9 | 6.30 (s) | 130.6 | 6.17 (brs) | 127.7 | 3.45 (s) | 50.7 |
6 | 195.3 | 196.0 | 191.1 | 197.1 | ||||
7 | 153.7 | 156.3 | 158.1 | 154.7 | ||||
8 | 92.8 | 4.64 (d, 9.8) | 60.4 | 5.24 (brs) | 80.1 | 110.4 | ||
9 | 2.24 (d, 12.8) | 50.3 | 2.63 (dd, 11.8, 3.1) | 47.3 | 2.86 (dd, 11.8, 3.7) | 45.5 | 2.32 (d, 13.3) | 49.9 |
2.69 (d, 12.8) | 1.96 (m) | 2.18 (m) | 2.86 (d, 13.3) | |||||
10 | 139.4 | 138.1 | 133.6 | 135.4 | ||||
11 | 140.3 | 140.9 | 132.9 | 130.5 | ||||
12 | 172.1 | 175.1 | 172.9 | 170.4 | ||||
13 | 1.93 (s) | 10.1 | 1.91 (s) | 10.8 | 2.03 (s) | 9.9 | 2.00 (s) | 10.6 |
14 | 1.88 (s) | 25.2 | 1.92 (s) | 25.9 | 1.93 (s) | 25.0 | 4.95 (s) | 119.2 |
5.12 (s) | ||||||||
15 | 1.66 (s) | 18.8 | 1.61 (s) | 17.7 | 1.60 (s) | 16.6 | 1.64 (s) | 17.8 |
