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Table 2 Spectral determination of (−)-gallocatechin in 1H-NMR and 13C-NMRa

From: Antigenotoxic properties of Paliurus spina-christi Mill fruits and their active compounds

Atom C/H

δH (ppm)

J (Hz)

δC (ppm)

HMBC (H → C)

2

4.51 d

7.2

82.89

C-4, C-1’

3

3.95 m

-

68.78

C-4, C-10

4

(α) 2.80 dd

16.2/5.5

28.13

C-10

(β) 2.48 dd

16.2/7.7

5

-

-

156.85

 

6

5.84 d

2.2

95.53

C-8, C-10

7

-

-

157.60

 

8

5.91 d

2.2

96.28

C-6, C-10

9

-

-

157.84

 

10

-

-

100.73

 

1’

-

-

131.60

 

2’

6.39 s

-

107.20

C-2, C-6′

3’

-

-

146.87

 

4’

-

-

134.01

 

5’

-

-

146.87

 

6’

6.39 s

-

107.20

C-2, C-2’

  1. a1H-NMR:600 MHz, CD3OD; 13C-NMR:150 MHz, CD3OD