1H and 13C NMR data for compounds 1–5 in CDCl3 (δ in ppm).
| Position | 1 | Position | 2 | 3 | 4 | 5 | |||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| δ H (J in Hz) | δ C | δ H (J in Hz) | δ C | δ H (J in Hz) | δ C | δ H (J in Hz) | δ C | δ H (J in Hz) | δ C | ||
| 1 | 7.42, d (8.4) | 126.9 | 1 | — | — | — | — | — | — | — | |
| 2 | 7.22, d (8.4) | 105.9 | 2 | 7.93, s | 152.0 | 7.87, s | 152.6 | 4.33, dd (10.4, 1.4) | 70.1 | 6.33, s | 110.3 |
| 3 | 156.4 | — | — | 3.99, t (10.4) | — | ||||||
| 4 | 117.4 | 3 | — | 124.8 | — | 123.6 | 3.51, m | 32.0 | — | 80.4 | |
| 4a | 149.6 | 4 | — | 175.9 | — | 180.9 | 2.92, dd (15.7, 10.3) | 30.8 | — | 189.4 | |
| 6α | 4.37, dd (10.8, 4.8) | 66.7 | — | — | 2.83, dd (15.7, 5.2) | — | |||||
| 6β | 3.76, t (10.8) | 5 | 8.05, d (9.0) | 126.9 | — | 162.4 | 6.81, d (8.2) | 129.3 | 7.62, d (8.8) | 127.1 | |
| 6a | 3.55, m | 40.3 | 6 | 6.84, d (9.0) | 115.1 | 6.28, s | 100.2 | 6.36, d (8.2) | 108.8 | 6.55, d (8.8) | 112.2 |
| 6b | 118.1 | 7 | — | 157.7 | — | 160.0 | — | 152.3 | — | 162.9 | |
| 7 | 6.86, s | 104.9 | 8 | — | 109.1 | — | 101.0 | — | 109.9 | — | 117.9 |
| 8 | 141.9 | 9 | — | 152.4 | — | 152.2 | — | 149.8 | — | 158.1 | |
| 9 | 148.3 | 10 | — | 118.4 | — | 106.0 | — | 114.0 | — | 115.3 | |
| 10 | 6.46, s | 94.0 | 1′ | — | 125.3 | — | 124.0 | — | 128.1 | — | 110.3 |
| 10a | 154.4 | 2′ | 7.11, s | 115.6 | 7.07, d (2.0) | 115.3 | — | 148.0 | — | 155.6 | |
| 11a | 5.61, d (7.2) | 78.8 | 3′ | — | 145.7 | — | 145.8 | 6.37, s | 98.5 | 6.48, s | 94.2 |
| 11b | 113.1 | 4′ | — | 146.7 | — | 147.0 | — | 146.6 | — | 150.5 | |
| 1′ | 6.85, d (2.0) | 144.5 | 5′ | 6.92, d (8.0) | 110.8 | 6.91, d (8.0) | 110.9 | — | 142.0 | — | 143.4 |
| 2′ | 7.56, d (2.0) | 104.2 | 6′ | 7.11, d (8.0) | 121.3 | 7.05, dd (2.0,8.0) | 121.1 | 6.60, s | 107.1 | 6.66, s | 103.7 |
| OCH2O | 5.92, d (1.2) | 101.6 | 1′′ | 6.84, d (10.0) | 115.3 | 6.71, d (10.2) | 115.2 | 6.67, d (10.0) | 117.4 | 3.46, d (6.8) | 22.3 |
| 5.90, d (1.2) | |||||||||||
| 2′′ | 5.66, d (10.0) | 129.4 | 5.53, d (10.2) | 126.4 | 5.51, d (10.0) | 128.1 | 5.23, t (6.8) | 120.3 | |||
| 3′′ | — | 80.3 | — | 80.7 | — | 78.1 | — | 140.3 | |||
| 4′′ | 1.77, m | 41.6 | 1.73, m | 41.7 | 1.71, m | 41.0 | 2.08, m | 39.8 | |||
| 5′′ | 2.12, m | 22.8 | 2.10, m | 22.7 | 2.10, m | 22.8 | 2.08, m | 26.4 | |||
| 6′′ | 5.10, t (6.8) | 123.8 | 5.09, t (7.2) | 123.8 | 5.09, t (7.0) | 124.4 | 5.04, t (6.8) | 123.7 | |||
| 7′′ | — | 132.2 | — | 132.1 | — | 131.7 | — | 132.3 | |||
| 8′′ | 1.66, s | 25.8 | 1.66, s | 25.8 | 1.66, s | 25.8 | 1.66, s | 25.8 | |||
| 9′′ | 1.57, s | 17.8 | 1.58, s | 17.8 | 1.58, s | 17.8 | 1.59, s | 17.9 | |||
| 10′′ | 1.46, s | 27.0 | 1.44, s | 27.1 | 1.39, s | 26.3 | 1.81 | 16.4 | |||
| OCH2O | — | — | — | — | 5.89, d (1.2) | 101.3 | 5.92, d (1.2), | 102.0 | |||
| 5.88, d (1.2) | 5.89, d (1.2) | ||||||||||
| –OH | 5.65, s | — | 5.71, s | — | 4.74, s | — | 4.16, s | — | |||
| 12.95, s | 6.16, s | ||||||||||
| –OCH3 | 3.92, s | 56.2 | 3.91, s | 56.2 | — | — | — | — | |||