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Hosenkoside G

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Taxonomy: Physicochemical and Pharmacological Properties of Triterpene Glycosides – Miscellaneous Glycosides – Hosenkol C

Biological source: Impatiens balsamina [1]

C47H80O19: 948.529

Mp: 223–225°C (MeOH) [1]

[α]D20 + 4.0° (c 1.3, C5H5N) [1]

FAB-MSm/z: 947 [M-H] [1]

1H NMR (J/Hz, C5D5N): 0.82, 0.85, 0.91, 1.04, 2.03 (s, CH3 × 5), 3.64 (d, J = 10.5, H-17), 3.80, 4.50 (d, J = 11.0, H2-21), 4.45 (m, H-3), 4.51, 4.53 (d, J = 11.0, H2-26), 5.49 (t, J = 7.0, H-24)

β-D-Glcp: 5.69 (d, J = 7.8, H-1); β-D-Glcp′: 5.22 (d, J = 7.3, H-1)

β-D-Xylp: 5.25 (d, J = 6.8, H-1) [1]

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

Table 1

C-1

38.8

C-16

28.2

Glc-1

104.2

Glc′-1

105.3

2

26.6

17

77.4

2

84.6

2

75.5

3

81.6

18

15.7

3

78.3

3

78.5

4

43.3

19

17.3

4

71.9

4

71.9

5

47.8

20

41.5

5

78.0

5

77.6

6

17.9

21

65.0

6

63.0

6

63.0

7

33.7

22

38.0

Xyl-1

107.2

   

8

40.9

23

22.0

2

76.5

   

9

51.0

24

127.9

3

78.2

   

10

36.9

25

136.0

4

71.0

   

11

21.2

26

60.9

5

67.5

   

12

25.3

27

21.9

       

13

40.6

28

71.5

       

14

References

  1. 1.
    N. Shoji, A. Umeyama, N. Saitou, K. Yoshikawa, M. Nagai, S. Arihara, Chem. Pharm. Bull. 42(7), 1422 (1994)CrossRefGoogle Scholar

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© Springer Science+Business Media New York 2013

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