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Table 2 Assignment of the 1 H - 13 C correlation signals found in the two-dimension HSQC and HMBC of transformed production

From: Transformation of multi-component ginkgolide into ginkgolide B by Coprinus comatus

Chemical shift (ppm)

DEPT

Numbeer of Carbon

Assignment a

HSQC

HMBC

176.60

C

0.15

C15 (A)

 

H2, H14, H16 (A)

176.39

C

1

C15 (B)

 

H2, H14, H16 (B)

174.34

C

0.15

C11 (A)

 

H10, H12 (A)

173.95

C

1

C11 (B)

 

H10, H12 (B)

170.80

C

0.15

C13 (B)

  

170.28

C

1

C13 (B)

 

H6 (B)

109.61

CH

1

C12 (B)

H12 (B)

H8, 3-OH (B)

109.51

CH

0.15

C12 (A)

 

H8 (A)

100.26

C

0.15

C4 (A)

 

H1a, H12, 3-OH (A)

98.45

C

1

C4 (B)

 

H12, H14, 3-OH (B)

91.81

CH

1

C2 (B)

H2 (B)

H1, H3 (B)

87.70

CH

0.15

C2 (A)

H2 (A)

H1b (A)

86.08

CH

0.15

C6 (A)

H6 (A)

 

85.14

C

0.15

C3 (A)

 

H1a, H1b (A)

82.90

C

1

C3 (B)

 

H2, H14, H16, 3-OH (B)

78.60

CH

1

C6 (B)

H6 (B)

H7 (B)

73.76

CH

1

C1 (B)

H1 (B)

H2, H16 (B)

71.69

C

1

C9 (B)

  

69.05

CH

1

C10 (B)

H10 (B)

H8, 10-OH (B)

68.74

CH

0.15

C10 (A)

H10 (A)

 

68.06

C

0.15

C9 (A)

  

67.42

C

1

C5 (B)

 

H6, H7, H10, 10-OH (B)

66.83

C

0.15

C5 (A)

 

H1a, H1b (A)

48.56

CH

1

C8 (B)

H8 (B)

H7, H10, H12 (B)

H18, H19, H20 (B)

48.53

CH

0.15

C8 (A)

H8 (A)

 

41.52

CH

1

C14 (B)

H14 (B)

H2, H3, H16 (B)

40.44

CH

0.15

C14 (A)

H14 (A)

 

36.59

CH2

1

C7 (B)

H7 (B)

H8 (B)

36.31

CH2

0.15

C7 (A)

H7 (A)

 

35.94

CH2

0.15

C1 (A)

H1a, H1b (A)

 

31.97

C

1

C17 (B)

 

H8, H18, H19, H20 (B)

31.95

C

0.15

C17 (A)

  

28.87

CH3

3

C18, C19, C20 (B)

H18. H19, H20

H8 (B)

0.51

C18, C19, C20 (A)

H18, H19, H20

H8 (A)

8.19

CH3

0.15

C16 (A)

H16 (A)

 

7.85

CH3

1

C16 (B)

H16 (B)

H14 (B)

  1. a(A): C assigned ginkgolide A; (B): C assigned ginkgolide B.