Betula-Schmidtoside A

Reference work entry

CAS Registry Number: 208711-89-1 Open image in new window

Taxonomy: Physicochemical and Pharmacological Properties of Triterpene Glycosides – Glycosides of Aglycones of Dammarane Type – 2,3-Seco-12β,20(S)-dihydroxy-dammar-4(29),24-diene

Biological source: Betula schmidtii [1]

C36H60O8: 620.428

[α]D + 1.2° (c 0.5, MeOH) [1]

FAB-MS (negative ion mode) m/z: 619.420 (M-H) [1]

1H NMR (J/Hz, C5D5N): 0.74, 0.87, 0.94, 1.33, 1.64, 1.64, 1.71 (s, CH3x7), 3.78 (t, J = 11.0), 4.30 (dd, J = 11.0, 4.9), 4.76 (s), 4.92 (s), 5.18 (d, J = 7.6), 5.33 (t, J = 7.0) [1]

13 C NMR (C 5D 5N): [ 1]

Table 1

C-1

24.7

C-17

53.9

Xyl-1

100.6

2

28.6

18

15.5

2

75.0

3

174.3

19

20.2

3

78.8

4

147.5

20

72.7

4

70.7

5

40.5

21

27.0

5

67.4

6

28.7

22

34.4

   

7

33.5

23

23.0

   

8

39.7

24

126.6

   

9

50.3

25

130.5

   

10

39.7

26

17.7

   

11

28.2

27

25.8

   

12

76.5

28

114.0

   

13

46.8

29

23.3

   

14

52.8

30

17.3

   

15

31.5

MeO

51.5

   

16

27.2

       

References

  1. 1.
    H. Fuchino, T. Satoh, J. Hida, M. Terada, N. Tanaka, Chem. Pharm. Bull. 46(6), 1051 (1998)CrossRefGoogle Scholar

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