Table 2.
1D-NMR spectroscopic data for compounds 5–7 (in CDCl3).
| 5 | 6 | 7 | ||||
|---|---|---|---|---|---|---|
| No | δC, Type | δH (J in Hz) | δC, Type | δH (J in Hz) | δC, Type | δH (J in Hz) |
| 2 | 85.3, C | – | 84.9, C | – | 87.3, C | – |
| 3 | 71.8, CH | 4.46, dd (12.5, 5.0) | 80.8, CH | 5.01, dd (7.6, 6.8) | 73.8, CH | 4.23, dd (10.8, 1.8) |
| 4 | 23.9, CH2 | 2.23, m 2.13, m |
22.2, CH2 | 2.42, m | 25.6, CH2 | 1.97, m 1.78, m |
| 5 | 27.7, CH2 | 2.70, m | 27.7, CH2 | 2.67, m | 30.0, CH2 | 2.69, m |
| 6 | 178.5, C | – | 175.2, C | – | 177.2, C | – |
| 7 | 101.6, C | – | 38.6, CH2 | 3.21, d (17.0) 3.04, d (17.0) |
38.2, CH2 | 3.20, s |
| 8 | 186.8, C | – | 194.1, C | – | 195.7, C | – |
| 9 | 105.4, C | – | 105.8, C | – | 105.9, C | – |
| 10 | 160.1, C | – | 160.1, C | – | 160.1, C | – |
| 11 | 114.3, CH | 6.14, s | 114.9, CH | 6.16, s | 114.1, CH | 6.14, s |
| 12 | 147.6, C | – | 148.9, C | – | 147.8, C | – |
| 13 | 115.3, C | – | 114.9, C | – | 114.8, C | – |
| 14 | 154.7, C | – | 154.8, C | – | 155.1, C | – |
| 15 | 169.8, C | – | 168.7, C | – | 170.0, C | – |
| 1′ | 73.0, CH | 5.97, s | 72.6, CH | 5.98, s | 72.6, CH | 5.98, s |
| 2′ | 136.4, C | – | 136.5, C | – | 136.5, C | – |
| 3′ | 123.3, CH | 6.90, s | 123.2, CH | 6.89, s | 123.2, CH | 6.90, s |
| 4′ | 147.8, C | – | 147.8, C | – | 147.8, C | – |
| 5′ | 119.4, CH | 6.81, s | 119.3, CH | 6.80, s | 119.3, CH | 6.80, s |
| 6′ | 161.7, C | – | 161.8, C | – | 161.7, C | – |
| 7′ | 112.5, C | – | 112.7, C | – | 112.6, C | – |
| 8′ | 185.6, C | – | 184.8, C | – | 185.4, C | – |
| 9′ | 105.6, C | – | 105.4, C | – | 105.5, C | – |
| 10′ | 185.9, C | – | 186.6, C | – | 186.2, C | – |
| 11′ | 38.6, CH | 4.79, d (6.7) | 37.9, CH | 4.65, dd (6.6, 0.9) | 38.0, CH | 4.73, dd (6.6, 0.6) |
| 12′ | 131.8, CH | 6.49, dd (8.5, 6.7) | 131.4, CH | 6.41, dd (8.5, 6.6) | 131.4, CH | 6.42, dd (8.5, 6.6) |
| 13′ | 132.2, CH | 6.09, d (8.5) | 132.9, CH | 6.09, d (8.5, 0.9) | 132.9, CH | 6.09, dd (8.5, 0.6) |
| 14′ | 41.5, C | – | 41.5, C | – | 41.4, C | – |
| 15′ | 35.0, CH2 | 2.79, d (17.5) 2.68, d (17.5) |
35.1, CH2 | 2.79, d (18.2) 2.68, d (18.2) |
35.1, CH2 | 2.79, d (17.5) 2.67, d (17.5) |
| 16′ | 22.1, CH3 | 2.38, s | 22.1, CH3 | 2.38, s | 22.1, CH3 | 2.38, s |
| 18′ | 170.4, C | – | 173.1, C | – | 173.1, C | – |
| 19′ | 21.1, CH3 | 2.02, s | 36.2, CH2 | 2.22, m | 36.2, CH2 | 2.21, m |
| 20′ | – | – | 18.4, CH2 | 1.57, m | 18.4, CH2 | 1.58, m |
| 21′ | – | – | 13.5, CH3 | 0.86, t (7.4) | 13. 5, CH3 | 0.86, t (7.4) |
| 15- OCH3 | 53.3, CH3 | 3.74, s | 53.8, CH3 | 3.75, s | 53.4, CH3 | 3.73, s |
| 3-OH | – | – | – | – | – | – |
| 6-OH | – | 13.95 | – | – | – | – |
| 10-OH | – | 11.05 | – | 11.36 | – | 11.5 |
| 6′-OH | – | 11.45 | – | 11.60 | – | – |