Gongganoside E

Reference work entry

CAS Registry Number: 164269-13-0 Open image in new window

Taxonomy: Physicochemical and Pharmacological Properties of Triterpene Glycosides – Glycosides of Aglycones of Ursene Type – Pomolic Acid

Biological source: Bhesa paniculata [1]

C54H88O23: 1104.571

[α]D21−26.6° (c 1.1, C5H5N) [1]

IR (KBr) νmax cm−1: 3390, 2926, 1726, 1636, 1455, 1070 [1]

FAB-MSm/z: 1127.5586 [M + Na]+; 1103 [M-H], 941, 795, 633, 471 [1]

1H NMR (J/Hz, CD3OD): 0.77 (s, CH3-26), 0.87 (s, CH3-24), 0.93 (d, J = 6.6, CH3-30), 0.96 (s, CH3-25), 1.11 (s, CH3-23), 1.19 (s, CH3-29), 1.32 (s, CH3-27), 2.51 (H-18), 5.30 (brs, H-12)

β-D-Glcp: 4.40 (d, J = 7.7, H-1)

β-D-Glcp′: 5.32 (d, J = 7.9, H-1)

α-L-Rhap: 5.17 (d, J = 1.5, H-1) [1]

13 C NMR (CD 3OD): [ 1]

Table 1

C-1

39.9

C-16

26.5

Glc-1

105.7

Rha-1

102.0

2

27.1

17

49.4

2

78.2

2

72.2

3

92.3

18

54.9

3

78.9

3

72.1

4

40.5

19

73.6

4

72.1

4

74.2

5

57.0

20

42.9

5

77.8

5

69.5

6

19.5

21

27.2

6

62.9

6

18.3

7

34.2

22

38.3

Glc′-1

102.0

Glc″-1

95.8

8

41.3

23

28.8

2

79.6

2

73.8

9

48.6

24

References

  1. 1.
    K. Ohashi, T. Tanikawa, Y. Okumura, K. Kawazoe, N. Tatara, M. Minato, H. Shibuya, I. Kitagawa, Chem. Pharm. Bull. 42(9), 1791 (1994)CrossRefGoogle Scholar

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© Springer Science+Business Media New York 2013

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