Table 1.
1H NMR spectral data of 1–5 (600 MHz, CDCl3).
| Position | 1 | 2 | 3 | 4 | 5 |
|---|---|---|---|---|---|
| δH (J in Hz) | δH (J in Hz) | δH (J in Hz) | δH (J in Hz) | δH (J in Hz) | |
| 2 | 5.48,d,(14.0) | 5.46,d,(14.0) | 5.43,d,(14.0) | 5.43,d(14.0) | 5.44,d(15.0) |
| 3 | 4.81,d,(14.0) | 4.87,d,(14.0) | 4.85,d,(14.0) | 4.96,d,(14.0) | 4.95,d(15.0) |
| 5 | 1.9,m; 2.14,m | 2.22,m; 2,38,m | 2.21,m; 2.28,m | 2.22,m; 2.40,m | 2.22,m; 2.47,m |
| 6 | 1.75,m; 1.90,m | 1.50,m; 1.9,m | 1.55,m; 2.04,m | 1.62,m; 2.22,m | 2.76,m; 2.93,m |
| 7 | 4.82,d,(10.0) | 3.22,d,(10.0) | 3.39,d,(10.0) | 3.53,d,(10.0) | - |
| 9 | 2.20,m;2.28,m | 2.25,m;2.41,m | 2.53,m; 2.68m | 2.20,m;2.62,m | 1.98,m |
| 10 | 5.48,m | 5.65,m | 5.61,m | 5.76,m | 2.44,m;2.20.m |
| 11 | 5.47,d,(16.0) | 5.53,d,(16.0) | 5.57,d,(16.0) | 5.68, d,(16.0) | 4.73,t(6.0,12.0) |
| 13 | 1.68,m; 1.70,m | 1.70,m; 1.81,m | 1.75,m; 2.23,m | 1.78,m; 1.80,m | 1.95,m; 1.81,m |
| 14 | 2.18,m; 2.48,m | 2.10,m; 2.38,m | 2.00,m; 2.28,m | 2.20,m; 2.32,m | 2.21,m; 2.44,m |
| 17 | 1.86,s | 1.87,s | 1.82,s | 1.84,s | 1.77,s |
| 18 | 1.85,s | 1,83,s | 1.82,s | 1.78,s | 1.89,s |
| 19 | 1.20,s | 1.34,s | 1.54,s | 1.31,s | 1.26,s |
| 20 | 1.36,s | 1.36,s | 1.56,s | 1.38,s | 1.53,s |
| 2′ | 2.08,s | 2.00,s |