Compound 3 from Betula ermanii

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Taxonomy: Physicochemical and Pharmacological Properties of Triterpene Glycosides – Glycosides of Aglycones of Dammarane Type – 20(S),24(R)-Epoxy-dammar-3β,11α,25-triol

Biological source: Betula ermanii [1]

C38H64O10: 680.449

[α]D + 21° (c 1.0, MeOH) [1]

HR-FAB-MSm/z: 679.441 [M-H] [1]

1H NMR (500 MHz, J/Hz, C5D5N): 1.00, 1.00, 1.02, 1.13, 1.15, 1.20, 1.38, 1.40, (s, CH3 × 8), 2.15 (s, Ac), 3.33 (dd, J = 12.5, 3.8), 4.92 (d, J = 8.2) [1]

13 C NMR (500 MHz, C 5D 5N): [ 1]

Table 1

C-1

41.4

C-16

26.1

Glc-1

103.9

2

26.9

17

50.1

2

76.2

3

89.0

18

16.9

3

75.8

4

40.0

19

16.9

4

71.8

5

56.8

20

86.0

5

78.4

6

18.4

21

23.0

6

62.6

7

36.5

22

36.5

Ac-1

170.0

8

40.9

23

26.8

2

21.3

9

56.0

24

84.2

   

10

38.2

25

71.1

   

11

70.3

26

26.1

   

12

40.0

27

27.0

   

13

41.8

28

28.1

   

14

50.2

29

16.8

   

15

31.4

30

16.5

   

References

  1. 1.
    H. Fuchino, T. Satoh, N. Tanaka, Chem. Pharm. Bull. 43(11), 1937 (1995)CrossRefGoogle Scholar

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