Skip to main content

Table 2 1H NMR Data of Compounds 1–6 (600 Hz, in CD3OD)

From: Isolation, bioassay and 3D-QSAR analysis of 8-isopentenyl flavonoids from Epimedium sagittatum maxim. as PDE5A inhibitors

Position

1

2

3

4

5

6

6

6.64 (1H, s)

6.26 (1H, s)

6.24 (1H, s)

6.63 (1H, s)

6.64 (1H, s)

6.65 (1H, s)

12

5.18 (1H, t, J = 7.1)

5.19 (1H, t, J = 6.9)

5.16 (1H, t, J = 7.2)

5.17 (1H, t, J = 7.0)

5.17 (1H, t, J = 7.0)

5.19 (1H, t, J = 6.6)

14

1.63 (3H, s)

1.66 (3H, s)

1.64 (3H, s)

1.69 (3H, s)

1.70 (3H, s)

1.72 (3H, s)

15

1.71 (3H, s)

1.71 (3H, s)

1.70 (3H, s)

1.60 (3H, s)

1.62 (3H, s)

1.64 (3H, s)

2ʹ 6ʹ

7.87 (1H, d, J = 8.7)

7.87 (1H, d, J = 8.9)

7.84 (1H, d, J = 7.8)

7.89 (1H, d, J = 8.5)

7.90 (1H, d, J = 8.9)

7.86 (1H, d, J = 8.4)

3ʹ 5ʹ

7.09 (1H, d, J = 8.6)

7.09 (1H, d, J = 8.9)

7.07 (1H, d, J = 7.9)

7.13 (1H, d, J = 8.5)

7.15 (1H, d, J = 8.9)

7.08 (1H, d, J = 8.4)

4ʹ–OCH3

3.89 (3H, s)

3.89 (3H, s)

3.87 (3H, s)

3.85 (3H, s)

3.86 (3H, s)

3.89 (3H, s)

3-O-rha

      

1

5.40 (1H, d, J = 1.7)

5.40 (1H, d, J = 1.7)

5.38 (1H, d, J = 1.7)

5.55 (1H, d, J = 1.7)

5.36 (1H, d, J = 1.7)

5.53 (1H, d, J = 1.7)

6

0.90 (3H, d, J = 6.0)

0.90 (3H, d, J = 6.0)

0.90 (3H, d, J = 6.0)

0.87 (3H, d, J = 6.0)

0.89 (3H, d, J = 6.4)

1.21 (3H, d, J = 6.1)

7-O-

glu

  

glu

glu

glu

1

5.06 (1H, d, J = 7.4)

  

5.06 (1H, d, J = 6.8)

5.08 (1H, d, J = 7.4)

5.07 (1H, d, J = 7.4)

3-O-rha-2-

 

rha

 

glu

xyl

rha

1

 

4.88 (1H, d, J = 1.2)

 

4.45 (1H, d, J = 7.8)

4.44 (1H, d, J = 7.6)

5.07 (1H, d, J = 7.4)

6

     

0.91 (3H, d, J = 4.7)