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Table 2 NMR spectroscopic data of genkwanin VIII

From: Isolation of anticancer constituents from flos genkwa (Daphne genkwaSieb.et Zucc.) through bioassay-guided procedures

Position

δH(J in Hz)

δC

HMBC(1H to 13C)

NOSEY

1

1.27(1H, m)

34.9

2, 10, 19

 
 

1.96(1H, m)

   

2

2.31(1H, m)

31.9

  

3

4.23(1H, d, J=10 Hz)

74.2

 

2

4

 

90.2

  

5

4.74(1H, s)

84.3

  

6

 

83.2

  

7

4.28(1H, s)

80.4

4, 5, 9, 20

8

8

2.56(1H, s)

45.4

6, 7, 9

1, 17

9

 

72.3

  

10

1.99(1H, m)

48.9

1, 4, 9

 

11

1.54(1H, m)

35.5

  

12

1.76(1H, m)

35.3

  
 

2.09(1H, m)

   

13

 

74.6

  

14

5.92(1H, s)

72.2

7, 8, 9, 12, 13, 15, 1″

7, 8, 16, 17

15

 

145.3

  

16

5.18(1H, s)

114.5

13, 15, 17

8, 11, 12, 17

 

5.17(1H, s)

   

17

1.91(3H, s)

19.2

13, 15, 16

 

18

0.92(3H, d, J=6.56 Hz)

13.5

9, 12

 

19

0.97(3H, d, J=7.12 Hz)

15.9

1, 2, 3

 

20

4.58(1H, d, J=12)

67.2

6, 7, 1´

 
 

4.22(1H, d, J=12)

   

 

167.5

  

 

129.7

  

3´7´

8.06(2H, d, J=8 Hz)

130.0

  

4´6´

7.37(2H, m)

128.5

  

7.61(1H, t, J=7.5 Hz),

133.2

  

1″

 

166.4

  

2″

 

129.7

  

3″7″

7.91(2H, d, J=7.5 Hz)

129.6

  

4″6″

7.51(2H, t, J=7.5 Hz)

128.3

  

5″

7.48(1H, m)

133.0

  
  1. Table 2: All values given in ppm downfield from TMS were determined in CDCl3 at 1H-NMR (400 MHz), 13C-NMR (100 MHz).