Table 1. 1H and 13C NMR Data of SG4 (DMSO-d6, δ, ppm, J/Hz).
| C atom | δC | δH | HMBC | C atom | δC | δH | HMBC | |
|---|---|---|---|---|---|---|---|---|
| 1 | 116.1 | 5.21 (1H) 5.17 (1H) | C-3, C-2 | Glc | 1′ | 96.9 | 4.25 (1H, d, J = 7.6 Hz) | C-3 |
| 2 | 143.4 | 5.76 (1H, dd, J = 17.0, 10.0 Hz) | C-13 | 2′ | 78.5 | 3.28 | C-3′ | |
| 3 | 80.0 | 3′ | 76.3 | 3.17 | C-2′, C-1′′, C-1′ | |||
| 4 | 41.6 | 1.46 (m, 2H) | C-3, C-13 | 4′ | 69.9 | 3.26 | C-3′ | |
| 5 | 22.5 | 1.92 (m, 2H) | C-6, C-4, C-7 | 5′ | 75.6 | 3.12 | ||
| 6 | 124.7 | 5.08 (submerged, 1H) | 6′ | 67.5 | 3.77 (1H, m), 3.33 (1H, m) | C-1′′′′ | ||
| 7 | 134.7 | Rha I | 1′′ | 100.2 | 5.13 (brs, 1H) | C-5′′, C-2′′, C-3′′ | ||
| 8 | 39.7 | 1.94 (m, 2H) | C-7, C-9, C-14, C-6 | 2′′ | 71.2 | 3.40 | C-3′′ | |
| 9 | 26.7 | 2.01 (m, 2H) | C-11, C-10, C-8, C-7 | 3′′ | 71.0 | 3.59 | C-2′′ | |
| 10 | 124.6 | 5.07 (submerged, 1H) | C-8, C-9, C-12, C-15 | 4′′ | 83.7 | 3.37 | C-6′′, C-1′′′, C-5′′, C-3′′ | |
| 11 | 131.1 | 5′′ | 66.8 | 4.00 | C-4′′ | |||
| 12 | 18.0 | 1.56 (s, 3H) | C-11, C-10, C-15 | 6′′ | 18.0 | 1.13 (d, J = 6.1 Hz) | C-4′′, C-5′′ | |
| 13 | 22.3 | 1.27 (s, 3H) | C-2, C-3, C-4 | Ara | 1′′′ | 106.2 | 4.32 (d, J = 7.5 Hz, 1H) | C-4′′ |
| 14 | 16.2 | 1.54 (s, 3H) | C-7, C-6, C-8 | 2′′′ | 77.1 | 3.10 | C-3′′ | |
| 15 | 25.9 | 1.63 (s, 3H) | C-11, C-10, C-12 | 3′′′ | 75.0 | 2.99 | C-1′′′ | |
| 4′′′ | 70.4 | 3.67 | ||||||
| 5′′′ | 66.5 | 3.68, 3.03 | C-1′′′ | |||||
| Rha II | 1′′′′ | 101.3 | 4.56 (s, 1H) | C-2′′′′, C-5′′′′ | ||||
| 2′′′′ | 71.2 | 3.40 | C-3′′′′ | |||||
| 3′′′′ | 71.1 | 2.96 | ||||||
| 4′′′′ | 72.5 | 3.18 | C-6′′′′, C-3′′′′, C-2′′′′ | |||||
| 5′′′′ | 68.8 | 3.41 | C-4′′′′ | |||||
| 6′′′′ | 18.4 | 1.13 (d, J = 6.1 Hz, 3H) | C-5′′′′, C-4′′′′ |