Table 1 1H NMR spectroscopic data for compounds 1–8 a .

From: Novel and Neuroprotective Tetranortriterpenoids from Chinese Mangrove Xylocarpus granatum Koenig

No.

1

2

3

4

5

6

7

8

1

       

1.37 m

2

3.30 dd (11.1, 3.8)

2.08 t (3.5)

2.99 dd (11.6, 2.4)

3.64 dd (9.5, 2.7)

   

1.96 m

        

1.57 m

3

5.02 d (3.8)

5.52 d (3.5)

5.28 d (11.6)

5.06 d (9.5)

6.92 s

6.48 s

6.97 s

3.42 t (2.8)

5

2.93 d (8.9)

2.24 m

3.15 s

3.38 dd (9.2, 2.3)

2.32 m

2.37 m

2.27 m

1.84 dd (12.9, 2.0)

6

2.38 dd (16.7, 3.3)

2.39 dd (16.4, 3.0)

5.30 s

2.36 m

2.32 m

2.49 d (14.3)

2.47 m

1.63 m

2.30 dd (16.7, 8.9)

2.17 m

 

1.77 m

2.46 m

2.31 m

2.27 m

 

8

  

2.24 m

     

9

  

2.19 m

2.15 m

   

2.02 m

10

 

1.97 m

  

2.40 m

2.37 m

2.27 m

 

11

2.19 m

2.10 m

2.05 m

2.01 m

1.79 m

2.37 m

3.10 dd (19.6, 7.2)

1.74 m

2.03 m

1.90 m

1.86 m

1.77 m

1.67 m

 

2.54 m

1.47 m

12

1.73 m

1.67 m

5.09 s

1.89 m

2.29 m

2.37 m

2.88 m

1.61 m

1.36 m

1.67 m

 

1.47 m

1.38 m

1.78 m

1.62 m

1.47 m

14

 

2.59 dd (12.7, 5.7)

2.40 d (8.6)

     

15

6.12 s

2.75 dd (16.5, 12.7)

3.35 d (19.4)

3.53 d (16.0)

6.28 s

6.68 s

6.17 s

5.23 dd (3.3, 1.5)

  

2.48 dd (16.5, 5.6)

2.65 dd (19.4, 8.6)

2.75 d (16.0)

    

16

       

2.11 dd (7.4, 3.4)

17

5.19 s

5.11 s

5.75 s

5.29 s

5.52 s

5.34 s

5.33 s

1.63 m

18

1.34 s

1.08 s

0.99 s

0.90 s

1.08 s

1.19 s

1.00 s

1.01 s

19

1.67 s

1.02 d (6.6)

1.14 s

1.08 s

1.15 d (5.7)

1.07 d (6.1)

1.04 d (5.6)

0.90 s

20

       

2.70 ddd (13.8,10.4, 2.8)

21

7.41 s

7.41 s

7.46 s

7.61 s

7.61 s

7.52 s

 

4.46 t (8.2)

        

3.91 t (8.2)

22

6.34 d (0.9)

6.38 s

6.37 s

6.50 d (1.4)

6.50 brs

6.44 d (0.9)

7.42 s

2.51 dd (17.1, 7.9)

        

2.20 dd (17.1, 11.4)

23

7.41 t (0.9)

7.43 d (1.5)

7.45 s

7.42 t (1.4)

7.44 s

7.44 t (1.5)

6.24 s

 

28

0.91 s

0.94 s

1.00 s

0.83 s

1.09 s

1.09 s

1.20 s

0.83 s

29

0.88 s

0.92 s

2.46 d (10.5)

 

1.14 s

1.18 s

1.11 s

0.85 s

   

2.26 d (10.5)

0.83 s

    

30

5.10 d (11.1)

5.30 d (3.5)

5.42 d (2.6)

3.51 d (2.7)

6.26 s

3.65 d (16.6)

6.49 s

1.09 s

      

3.45 d (16.6)

  

7-OMe

3.71 s

3.68 s

3.76 s

3.74 s

3.69 s

3.70 s

3.69 s

 

9-OMe

     

3.68 s

  

7-OAc

       

1.97 s

1-OAc

  

2.15 s

     

3-OAc

 

2.15 s

2.11 s

     

6-OAc

  

2.19 s

     

12-OAc

  

2.10 s

     

30-OAc

2.03 s

2.11 s

2.06 s

   

2.09 s

 

3′

6.78 dd (7.2, 1.8)

  

7.02 m

6.78 q (6.8)

   

4′

1.84 d (7.2)

  

1.86 d (7.0)

1.81 d (7.8)

   

5′

1.84 s

  

1.92 s

1.77 s

   

8-OH

2.95 s

 

3.69 brs

 

3.83 s

 

3.94 s

 

9-OH

3.84 s

3.30 s

      
  1. aSpectra measured at 400 MHz in CDCl3.
Back to article page