Table 1.
Structure, mass spectra, 1H (600 MHz), and 13C (126 MHz) NMR data of Adduct A and B.
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| No. | δH (ppm) | δC (ppm) | δH (ppm) | δC (ppm) |
| 2 | - | 146.08 | - | 146.07 |
| 3 | - | 135.47 | - | 135.43 |
| 4 | - | 179.98 | - | 179.85 |
| 5-OH | - | 165.81 | - | 165.15 |
| 6 | - | 103.97 | - | 103.81 |
| 7-OH | - | 162.86 | - | 162.83 |
| 8 | - | 103.54 | - | 103.49 |
| 9 | - | 159.50 | - | 159.38 |
| 10 | - | 102.49 | - | 102.51 |
| 11 | 5.58 (s, 1H) | 70.23 | 5.47 (s, 1H) | 71.83 |
| 12 | - | 209.32 | 209.68 | |
| 13 | 2.15 (s, 3H) | 25.93 | 2.17 (s, 3H) | 25.81 |
| 14 | 5.44 (s, 1H) | 68.66 | 5.34 (s, 1H) | 69.72 |
| 15 | - | 209.32 | 209.16 | |
| 16 | 1.71 (s, 3H) | 23.13 | 1.69 (s, 3H) | 21.41 |
| 1' | - | 123.80 | - | 123.85 |
| 2' | 7.69 (s, 1H) | 116.11 | 7.63 (s, 1H) | 116.10 |
| 3'-OH | - | 145.93 | - | 145.94 |
| 4'-OH | - | 150.05 | - | 150.06 |
| 5' | 6.90 (d, J = 8.5 Hz, 1H) | 117.69 | 6.88 (d, J = 8.5 Hz, 1H) | 117.68 |
| 6' | 7.69 (d, J = 8.5 Hz, 1H) | 122.78 | 7.63 (d, J = 8.5 Hz, 1H) | 122.80 |
| 3-O-glu | ||||
| 1” | 5.23 (d, J = 7.8 Hz, 1H) | 107.23 | 5.27 (d, J = 7.8 Hz, 1H) | 106.32 |
| 2” | 3.16-3.82 (m, 10H, H-2”–H-6”, H-2”'−5”') | 75.66 | 3.18-3.87 (m, 10H, H-2”–H-6”, H-2”'−5”') | 75.66 |
| 3” | 78.11 | 78.10 | ||
| 4” | 71.77 | 72.00 | ||
| 5” | 77.28 | 77.37 | ||
| 6” | 68.91 | 68.79 | ||
| 6 ” -O-rha | ||||
| 1”' | 4.49 (s, 1H) | 108.77 | 4.48 (s, 1H) | 107.17 |
| 2”' | 3.16–3.82 (m, 10H, H-2”–H-6”, H-2”'−5”') | 72.05 | 3.18–3.87 (m, 10H, H-2”–H-6”, H-2”'−5”') | 72.05 |
| 3”' | 72.19 | 72.19 | ||
| 4”' | 73.86 | 73.85 | ||
| 5”' | 69.68 | 69.68 | ||
| 6”' | 1.13 (d, J = 6.2 Hz, 3H) | 17.90 | 1.12 (d, J = 6.0 Hz, 3H) | 17.91 |