Advertisement

Gongganoside C

Reference work entry

CAS Registry Number: 161161-65-5 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]

C47H74O18: 926.487

[α]D19 + 11.8° (c 1.19, MeOH) [1]

IR (KBr) νmax cm−1: 3430, 1730, 1692, 1638, 1457, 1075 [1]

FAB-MSm/z: 925 [M-H], 763, 719, 587, 441 [1]

FAB-MSm/z: 949 [M + Na]+ [1]

1H NMR (J/Hz, CD3OD): 0.78 (CH3-24), 0.88 (CH3-26), 0.91 (CH3-23, 29, 30), 0.98 (CH3-25), 2.28 (d, J = 9.8, H-18), 3.05 (dd, J = 4.7, 10.4, H-3), 5.62 (brs, H-12)

α-L-Rhap: 4.69 (d, J = 1.1, H-1), 1.23 (d, J = 6.1, CH3-6)

β-D-Xylp: 4.47 (d, J = 7.0, H-1)

β-D-Glcp: 5.37 (d, J = 8, H-1) [1]

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

Table 1

C-1

39.8

C-16

26.4

Rha-1

104.0

Glc-1

95.6

2

26.6

17

49.8

2

72.2

2

73.9

3

90.3

18

55.3

3

82.2

3

78.2

4

40.0

19

40.2

4

73.0

4

71.1

5

56.6

20

38.2

5

69.8

5

78.6

6

19.4

21

31.1

6

17.9

6

62.5

7

37.0

22

38.0

Xyl-1

106.5

   

8

40.8

23

28.7

2

75.2

   

9

48.0

24

17.1

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

Copyright information

© Springer Science+Business Media New York 2013

Personalised recommendations