Compound 2 From Betula ermanii

Reference work entry

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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]

C36H62O9: 638.439

[α]D + 14° (c 0.5, MeOH) [1]

HR-FAB-MSm/z: 637.433 [M-H] [1]

1H NMR (500 MHz, J/Hz, C5D5N): 1.00, 1.03, 1.10, 1.19, 1.20, 1.37, 1.39, 1.41 (s, CH3 × 8), 3.98 (t, J = 8.2), 4.97 (d, J = 7.6) [1]

13 C NMR (125 MHz, C 5D 5N): [ 1]

Table 1

C-1

41.6

C-16

26.0

Glc-1

106.0

2

27.2

17

50.1

2

75.8

3

88.8

18

17.0

3

78.8

4

40.3

19

17.0

4

71.8

5

56.9

20

86.0

5

78.2

6

18.4

21

23.0

6

62.9

7

36.5

22

36.5

   

8

40.9

23

26.8

   

9

56.0

24

84.2

   

10

39.3

25

71.1

   

11

70.3

26

26.1

   

12

40.0

27

27.0

   

13

41.8

28

28.4

   

14

50.2

29

16.9

   

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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