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Goyaglycoside-a

Reference work entry

CAS Registry Number: 333332-41-5 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]

C37H60O9: 648.423

[α]D26−101.4° (c 0.5, MeOH) [1]

IR (KBr) νmax cm−1: 3423, 1080 [1]

FAB-MSm/z: 649 [M + H]+ [1]

FAB-MSm/z: 647 [M-H], 617 [M-CH3O], 455 [M-CH3O-C6H10O5] [1]

1H NMR (270 MHz, J/Hz, C5D5N): 0.86 (CH3-29), 0.89 (CH3-30), 0.90 (s, CH3-18), 0.97 (d, J = 5.3, CH3-21), 1.47 (CH3-28), 1.54 (CH3-26), 1.54 (CH3-27), 3.12 (dd-like, H-8), 3.44 (OCH3-19), 3.73 (brs, H-3), 4.84 (s, H-19), 5.62 (dd, J = 3.6, 9.6, H-7), 5.92 (m, H-23), 5.92 (m, H-24), 6.16 (dd, J = 2.0, 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

18.7

C-16

28.2

Glc-1

105.3

2

27.4

17

50.4

2

76.2

3

83.8

18

14.9

3

78.6

4

39.2

19

112.4

4

72.1

5

85.5

20

36.6

5

78.0

6

133.2

21

18.9

6

63.1

7

131.6...

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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