Research Article
α-Amylase and α-Glucosidase Inhibitory Saponins from Polyscias fruticosa Leaves
Table 1
13C-NMR data of compounds
1–
3 measured in DMSO-
.
| C | 1 | 2 | 3 | C | 1 | 2 | 3 |
| 1 | 38.1 | 38.1 | 38.1 | 3-O-GluA | | | | 2 | 25.4 | 22.9 | 25.4 | 1′ | 105.0 | 103.6 | 103.6 | 3 | 87.9 | 88.4 | 88.3 | 2′ | 73.5 | 79.3 | 79.5 | 4 | 38.7 | 38.6 | 38.6 | 3′ | 75.4 | 75.4 | 75.3 | 5 | 55.0 | 55.0 | 55.0 | 4′ | 82.9 | 82.3 | 82.3 | 6 | 17.7 | 17.7 | 17.7 | 5′ | 75.3 | 75.1 | 75.1 | 7 | 32.2 | 32.3 | 32.7 | 6′ | 172.0 | 171.8 | 171.5 | 8 | 40.0 | 40.7 | 40.0 | 4′-O-Glu | | | | 9 | 47.0 | 47.0 | 47.0 | 1′′ | 103.8 | 103.3 | 103.3 | 10 | 36.2 | 36.2 | 36.2 | 2′′ | 73.4 | 73.5 | 73.6 | 11 | 22.9 | 22.9 | 22.9 | 3′′ | 76.3 | 76.2 | 76.3 | 12 | 121.6 | 121.7 | 121.5 | 4′′ | 70.0 | 69.9 | 69.9 | 13 | 143.4 | 143.4 | 143.5 | 5′′ | 77.0 | 77.0 | 77.0 | 14 | 41.2 | 41.2 | 41.1 | 6′′ | 61.1 | 61.1 | 61.0 | 15 | 27.1 | 27.7 | 27.9 | 2′-O-Glu | | | | 16 | 22.5 | 22.5 | 21.9 | 1′′′′ | — | 103.1 | 103.2 | 17 | 45.9 | 45.9 | 45.8 | 2′′′′ | — | 73.5 | 73.6 | 18 | 40.7 | 40.7 | 40.7 | 3′′′′ | — | 76.1 | 76.0 | 19 | 45.5 | 45.5 | 45.5 | 4′′′′ | — | 70.1 | 70.0 | 20 | 30.2 | 30.3 | 30.2 | 5′′′′ | — | 76.8 | 76.7 | 21 | 33.2 | 33.2 | 33.2 | 6′′′′ | — | 60.9 | 61.0 | 22 | 31.6 | 31.6 | 32.3 | 28-O-Glc/Gal | | | | 23 | 27.6 | 27.7 | 27.7 | 1′′′ | 94.1 | 94.1 | 91.9 | 24 | 16.6 | 16.1 | 16.7 | 2′′′ | 72.3 | 72.3 | 76.9 | 25 | 15.1 | 15.1 | 15.1 | 3′′′ | 76.6 | 76.6 | 74.1 | 26 | 16.4 | 16.9 | 16.7 | 4′′′ | 69.5 | 69.5 | 70.7 | 27 | 25.4 | 25.5 | 25.5 | 5′′′ | 77.6 | 77.7 | 76.8 | 28 | 175.2 | 175.2 | 175.2 | 6′′′ | 60.7 | 60.7 | 61.8 | 29 | 32.7 | 32.7 | 32.7 | 2′′′-O-Glu | | | | 30 | 23.3 | 23.3 | 23.4 | 1′′′′′ | — | — | 102.3 | | | | | 2′′′′′ | — | — | 75.0 | | | | | 3′′′′′ | — | — | 77.0 | | | | | 4′′′′′ | — | — | 69.4 | | | | | 5′′′′′ | — | — | 77.5 | | | | | 6′′′′′ | — | — | 60.5 |
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