Position

PBy4 (a) δ_C (500 MHz DMSO-d6)

δ_C (a) (ppm)

PBy4 (b)δ_C (500 MHz DMSO-d6)

δ_C (b) (ppm)

2-methyl-5,7- dihydroxychromone-

8-C-β-D-glucopyranoside

δC (125 MHz, pyridine-d5)

2

167.4

167.5

167.3

3

107.8

107.5

107.5

4

181.9

182.1

182.0

5

160.7

160.4

160.4

6

108.7

99.5

98.4

7

163.2

162.7

162.6

8

93.4

103.6

104.4

9

156.7

156.3

156.2

10

104.5

103.1

103.5

1'

72.9

72.5

73.1

2'

70.4

70.9

70.8

3'

78.9

78.5

78.5

4'

70.6

70.1

70.4

5'

81.3

81.5

81.2

6'

61.4

63.3

61.3

1''

19.8

19.8

19.7