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Table 2 1H and13 C NMR Data of compounds 3 and 4 (δ in ppm, data obtained in CDCl3)

From: Antivirus isoindolinone alkaloids with rare oxocyclopenta[f]isoindole frameworks isolated from the stems of flue cured tobacco

No

3

4

δC

δH (J in Hz)

δC

δH (J in Hz)

1

167.5 (C)

 

166.3 (C)

 

3

44.2 (CH2)

4.24, s

39.7 (CH2)

4.21, s

4

156.8 (C)

 

156.8 (C)

 

5

123.9 (C)

 

123.7 (C)

 

6

152.2 (C)

 

152.4 (C)

 

7

115.7 (CH)

7.48, s

115.4 (CH)

7.50, s

3a

125.1 (C)

 

125.4 (C)

 

7a

136.7 (C)

 

136.8 (C)

 

8

28.2 (CH2)

2.68, t (5.6)

28.2 (CH2)

2.68, t (5.6)

9

37.4 (CH2)

3.36, t (5.6)

37.2 (CH2)

3.36, t (5.6)

10

206.3 (C)

 

206.3 (C)

 

4-OMe

60.9 (CH3)

3.82, s

60.9 (CH3)

3.84, s

2′

153.2 (C)

 

161.7 (C)

 

3′

121.6 (CH)

6.94, d (7.8)

114.6 (CH)

6.74, d (8.8)

4′

122.4 (CH)

7.04, d (7.8)

144.6 (CH)

7.59, d (8.8)

5′

154.4 (C)

 

118.2 (C)

 

6′

145.9 (C)

 

155.6 (C)

 

7′

32.1 (CH2)

3.16, t (6.2)

52.3 (CH2)

4.02, s

8′

46.8 (CH2)

3.56, t (6.2)

14.2 (CH3)

2.21, s

9′

18.3 (CH3)

2.32, s

  

5′-OMe

55.9 (CH3)

3.80, s

  

1′-NH

   

8.90, s