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Applied Biological Chemistry

Table 1 1H- and 13C-NMR spectral data of compounds 2 and 3 in CDCl3

From: Antioxidant and anti-inflammatory effects in lipopolysaccharide-induced THP-1 cells of coumarins from the bark of Hesperethusa crenulata R.

No.

1H-NMR

13C-NMR

2

3

2

3

2

  

163.8

160.7

3

6.19 (1H, d, J = 9.1)

6.26 (1H, d, J = 9.1)

114.2

113.2

4

7.84 (1H, d, J = 9.1)

7.64 (1H, d, J = 9.1)

146.3

143.3

5

7.39 (1H, s)

7.33 (1H, s)

125.1

125.0

6

  

127.4

129.5

7

  

165.4

161.1

8

6.71 (1H, s)

6.81 (1H, s)

98.3

98.9

9

  

157.0

154.9

10

  

112.3

112.1

1′a

3.25 (2H, m, H-1')

3.02 (1H, dd, J = 2.2, 14.0)

30.4

32.5

1′b

3.25 (2H, m, H-1')

2.56 (1H,dd, J = 10.5, 14.0)

2′

4.76 (1H, m, H-2')

3.65 (1H, br.d, J = 10.5)

92.6

77.6

3′

  

72.4

72.8

4′-CH3

1.30 (3H, s)

1.38 (3H, s)

25.5

26.3

5′-CH3

1.24 (3H, s)

1.27 (3H, s)

25.4

23.6

OCH3

 

3.92 (3H, s)

 

56.0

  1. δ in ppm from TMS, J value in Hz
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