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

^aAssignments were confirmed by 1D (DEPT) and 2D-NMR (HSQC, HMBC).