Research Article
Isolation and Bioactivity Analysis of Ethyl Acetate Extract from Acer tegmentosum Using In Vitro Assay and On-Line Screening HPLC-ABTS+ System
Table 3
13C-NMR chemical shifts of compounds 1–5 isolated from Acer tegmentosum.
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Number of carbon | 1 | 2 | 3 | 4 | 5 | CD3OD 100 MHz | CD3OD 150 MHz | CD3OD 150 MHz | CD3OD 150 MHz | CD3OD 150 MHz |
| 1 | | | | | 130.56 | 2 | 158.70 | 159.44 | 82.81 | 79.86 | 130.83 | 3 | 135.65 | 135.00 | 69.78 | 67.47 | 116.08 | 4 | 179.48 | 180.09 | 28.47 | 29.25 | 156.52 | 5 | 163.05 | 163.19 | 157.54 | 157.66 | 116.08 | 6 | 99.88 | 99.95 | 96.28 | 96.38 | 130.83 | 7 | 166.07 | 166.25 | 157.78 | 157.98 | 36.33 | 8 | 94.70 | 94.84 | 95.50 | 95.88 | 72.20 | 9 | 158.43 | 158.69 | 156.88 | 157.35 | | 10 | 105.63 | 105.69 | 100.81 | 100.06 | | 1′ | 122.89 | 123.09 | 132.19 | 132.28 | | 2′ | 117.45 | 116.54 | 115.23 | 115.88 | | 3′ | 145.95 | 146.47 | 146.19 | 145.76 | | 4′ | 149.96 | 149.96 | 146.21 | 145.92 | | 5′ | 116.17 | 116.54 | 116.08 | 115.31 | | 6′ | 123.03 | 123.20 | 120.03 | 119.38 | | Sugar-1′′ | 104.63 | 109.59 | | | 104.39 | 2′′ | 72.87 | 83.41 | | | 74.99 | 3′′ | 74.13 | 78.76 | | | 77.84 | 4′′ | 69.11 | 88.10 | | | 71.67 | 5′′ | 66.94 | 62.64 | | | 75.34 | 6′′ | | | | | 64.70 | Galloyl-1′′′ | | | | | 121.37 | 2′′′ | | | | | 110.16 | 3′′′ | | | | | 146.44 | 4′′′ | | | | | 139.78 | 5′′′ | | | | | 146.44 | 6′′′ | | | | | 110.16 | –COO– | | | | | 168.31 |
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