Research Article

Structure Analysis of Effective Chemical Compounds against Dengue Viruses Isolated from Isatis tinctoria

Table 1

1H and 13C NMR data of compounds GB-1 in DMSO-d6 (δ, ppm; J, Hz).

Positions1H NMR13C NMR

27.19 (1H, s)122.9 (CH)
3120.3 (C)
4122.6 (C)
56.67 (1H, d, J = 8.6)103.3 (CH)
67.00 (1H, t, J = 8.6)151.9 (CH)
76.97 (1H, d, J = 8.6)106.1 (CH)
8138.0 (C)
9103.8 (C)
104.17 (2H, d, J = 12.4)15.0 (CH2)
11116.6 (C)
1′4.88 (1H, d, J = 7.6)101.3 (CH)
2′3.60 (1H, dd, J = 9.0, 7.8)73.6 (CH)
3′3.91 (1H, dd, J = 9.0, 9.0)76.7 (CH)
4′3.44 (1H, t, J = 9.0)69.8 (CH)
5′3.25 (1H, dq J = 9.0, 6.0)77.1 (CH)
6′3.72 (1H, dd, J = 12.0, 2.4)60.8 (CH2)
3.48 (1H, d, J = 12.0)