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Compound 6 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]

C38H64O9: 664.455

[α]D + 20° (c 1.0, MeOH) [1]

HR-FAB-MSm/z: 663.448 [M-H] [1]

1H NMR (500 MHz, J/Hz, C5D5N): 1.01, 1.02, 1.10, 1.13, 1.15, 1.43, 1.63, 1.68 (s, CH3 × 8), 2.16 (s, OAc), 5.29 (t, J = 7.0) [1]

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

Table 1

C-1

41.4

C-16

25.5

Glc-1

103.9

2

26.9

17

50.3

2

76.2

3

89.0

18

17.0

3

75.8

4

40.0

19

16.9

4

71.8

5

56.8

20

73.9

5

78.4

6

18.4

21

25.8

6

62.6

7

36.6

22

41.8

Ac

169.9

8

41.0

23

23.3

 

21.3

9

56.0

24

126.0

   

10

39.2

25

130.7

   

11

70.4

26

26.1

   

12

40.7

27

17.7

   

13

41.1

28

28.2

   

14

50.6

29

16.7

   

15

31.3

30

16.8

   

References

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

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