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International Journal of Phytomedicine and Phytotherapy

Table 1 13C NMR chemical shift values (ppm) of stigmasterol and β-sitosterol recorded in CDCl3

From: Hypoglycaemic activity of Smilax canellifolia Mill. rhizomes: a bioassay-guided isolation and identification of synergistic compounds

Carbons

Stigmasterol

β-sitosterol

Observed

Literature

Observed

Literature

1

37.3

37.6

36.5

37.5

2

31.9

32.1

31.7

31.9

3

71.8

72.1

71.8

72.0

4

42.8

42.4

42.3

42.5

5

140.8

141.1

140.7

140.9

6

121.8

121.8

121.8

121.9

7

31.9

31.8

31.9

32.1

8

31.9

31.8

31.9

32.1

9

50.2

50.2

50.1

50.3

10

36.5

36.6

36.2

36.7

11

21.2

21.5

21.1

21.3

12

39.8

39.9

39.7

39.9

13

42.3

42.4

42.2

42.6

14

56.9

56.8

56.8

56.9

15

24.4

24.4

26.0

26.3

16

29.1

29.3

28.3

28.5

17

56.0

56.2

56.1

56.3

18

40.5

40.6

36.2

36.3

19

23.1

21.7

19.0

19.2

20

138.4

138.7

33.9

34.2

21

129.3

129.6

26.0

26.3

22

45.8

46.1

45.8

46.1

23

25.4

24.4

23.1

23.3

24

12.1

12.1

11.9

12.2

25

29.1

29.6

28.9

29.4

16

21.1

20.2

19.9

20.1

27

19.9

19.8

19.4

19.6

28

18.8

18.9

19.0

19.0

29

12.3

12.2

12.0

12.0