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Goyaglycoside-c

Reference work entry

CAS Registry Number: 333332-49-3 Open image in new window

Taxonomy: Physicochemical and Pharmacological Properties of Triterpene Glycosides – Glycosides of Aglycones of Cucurbitane Type – 19(R)-Methoxy-5β,19-epoxy-cucurbita-6,23-diene-3β,25-diol

Biological source: Momordica charantia [1]

C38H62O9: 662.439

[α]D26-110.8° (c 0.5, MeOH) [1]

IR (KBr) νmax cm−1: 3410, 1078 [1]

FAB-MSm/z: 661 [M-H], 647 [M-CH3], 499 [M-C6H11O5], 685 [M + Na]+ [1]

1H NMR (270 MHz, J/Hz C5D5N): 0.86 (CH3-29), 0.92 (s, CH3-18), 0.92 (CH3-30), 1.33 (CH3-26), 1.33 (CH3-27), 1.48 (CH3-28), 3.22 (H-25), 3.3 (dd-like, H-8), 3.44 (CH3O-19), 3.73 (brs, H-3), 4.85 (s, H-19), 5.55 (d, J = 15.8, H-24), 5.65 (m, H-7), 5.65 (m, H-23), 6.17 (dd, J = 1.7, 9.6, H-6)

β-D-Glcp: 4.95 (d, J = 7.6, H-1) [1]

13 C NMR (68 MHz, C 5D 5N): [ 1]

Table 1

C-1

18.6

C-16

28.1

Glc-1

105.2

2

27.3

17

50.3

2

76.1

3

83.6

18

14.8

3

77.8

4

39.1

19

112.3

4

72.0

5

85.4

20

36.3

5

78.5

6

133.1

21

18.8

6

63.0

7

131.5

22

39.6

   

8

42.2

23

128.3

   

9

48.1

References

  1. 1.
    T. Murakami, A. Emoto, H. Matsuda, M. Yoshikawa, Chem. Pharm. Bull. 49(1), 54 (2001)CrossRefGoogle Scholar

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© Springer Science+Business Media New York 2013

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