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Gongganoside A

Reference work entry

CAS Registry Number: 161161-63-3 Open image in new window

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

Biological source: Bhesa paniculata [1]

C41H64O13: 764.434

[α]D25 + 18.3° (c 1.04, MeOH) [1]

IR (KBr) νmax cm−1: 3430, 1686, 1636, 1453, 1055 [1]

FAB-MSm/z: 763 [M-H], 719, 587, 441 [1]

1H NMR (J/Hz, CD3OD): 0.74 (CH3-24), 0.89 (CH3-26), 0.91 (CH3-23, 29, 30), 0.98 (CH3-25), 2.24 (d, J = 10.6, H-18), 3.06 (dd, J = 4.7, 10.6, H-3), 5.60 (brs, H-12)

α-L-Rhap: 4.70 (d, J = 1.2, H-1), 1.23 (d, J = 6.2, CH3-6)

β-D-Xylp: 4.47 (d, J = 7.1, H-1) [1]

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

Table 1

C-1

39.8

C-16

26.5

Rha-1

104.0

2

26.6

17

49.5

2

72.2

3

90.3

18

55.5

3

82.2

4

40.0

19

40.4

4

73.0

5

56.6

20

38.3

5

69.8

6

19.4

21

31.2

6

17.9

7

37.6

22

38.0

Xyl-1

106.6

8

40.6

23

28.7

2

75.2

9

48.0

24

17.1

3

77.6

10

37.9

25

16.9

4

71.1

11

23.8

26

19.1

5

66.9

12

130.4

27

179.0

   

13

133.9

28

181.6

   

14

57.3

29

18.2

   

15

25.7...

References

  1. 1.
    K. Ohashi, H. Kojima, T. Tanikawa, Y. Okumura, K. Kawazoe, N. Tatara, H. Shibuya, I. Kitagawa, Chem. Pharm. Bull. 42(8), 1596 (1994)CrossRefGoogle Scholar

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© Springer Science+Business Media New York 2013

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