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Table 1 NMR spectra data of compound 6 in CD 3 OD

From: Extracts and compounds with anti-diabetic complications and anti-cancer activity from Castanea mollissina Blume (Chinese chestnut)

No.

1H-NMR

13C-NMR

HMBC

2

 

158.17 s

 

3

 

134.58 s

 

4

 

179.00 s

 

5

 

162.69 s

 

6

6.06 (1H, br.s)

99.79 d

5, 7, 8, 10

7

 

165.32 s

 

8

6.25 (1H, d, 1.6)

94.54 d

6, 7, 9, 10

9

 

157.96 s

 

10

 

105.55 s

 

1′

 

122.52 s

 

2′, 6′

7.96 (2H, d, 8.8)

131.95 d

2, 4′

3′, 5′

6.87 (2H, d, 8.8)

116.10 d

4′, 1′

4′

 

161.13 s

 

1′′

5.54 (1H, d, 8.0 )

100.85 d

3, 2′′

2′′

5.38 (1H, dd, 9.6,8.0)

73.98 d

1′′, 3′′, 9′′′

3′′

3.82 (1H, m)

73.13 d

2′′

4′′

3.88 (1H, m)

70.53 d

2′′

5′′

3.85 (1H, m)

74.90 d

 

6′′

4.19 (1H, dd, 11.6)

64.15 t

9′′′′

4.36 (1H, dd, 11.6)

1′′′

 

127.09 s

 

2′′′, 6′′′

7.46 (2H, d, 8.4)

131.00 d

4′′′, 7′′′

3′′′, 5′′′

6.79 (2H, d, 8.4)

116.59 d

1′′′, 4′′′

4′′′

 

160.94 s

 

7′′′

7.69 (1H, d, 15.6)

146.68 d

6′′′, 8′′′, 9′′′

8′′′

6.40 (1H, d, 15.6)

115.12 d

1′′′, 9′′′

9′′′

 

168.23 s

 

1′′′′

 

126.87 s

 

2′′′′, 6′′′′

7.27 (2H, d, 8.4)

130.92 d

4′′′′, 7′′′′

3′′′′, 5′′′′

6.79 (2H, d, 8.4)

116.59 d

1′′′′, 4′′′′

4′′′′

 

160.87 s

 

7′′′′

7.40 (1H, d, 15.6)

146.35 d

6′′′′, 8′′′′, 9′′′′

8′′′′

6.05 (1H, d, 15.6)

114.43 d

9′′′′

9′′′′

 

168.21 s