Research Article
The Mechanism Underlying the Antibacterial Activity of Shikonin against Methicillin-Resistant Staphylococcus aureus
Table 1
1H-NMR (400 MHz) and 13C-NMR (100 MHz) data of SKN (in CDCl3, δ in ppm, J in Hz)a.
| | Number | δH | δC |
| | 1 | | 180.0 | | 2 | | 151.2 | | 3 | 7.12 (1H, s) | 131.6 | | 4 | | 180.3 | | 5 | | 165.3 | | 6 | 7.16 (1H, s) | 132.0 | | 7 | 7.16 (1H, s) | 132.1 | | 8 | | 164.7 | | 9 | | 112.3 | | 10 | | 111.2 | | 11 | 4.88 (1H, dd, J = 7.6, 4.2 Hz) | 68.0 | | 12 | 2.62 (1H, m, H-12a) | 35.2 | | 2.34 (1H, m, H-12b) | | 13 | 5.18 (1H, m) | 118.1 | | 14 | | 137.3 | | 15 | 1.60 (3H, s) | 18.0 | | 16 | 1.73 (3H, s) | 25.7 |
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aAssignments were confirmed by 1D (DEPT) and 2D-NMR (HSQC, HMBC).
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