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Goyaglycoside-e

Reference work entry

CAS Registry Number: 333333-12-3 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]

C42H68O13: 780.465

[α]D28−75.6° (c 0.7, EtOH) [1]

IR (KBr) νmax cm−1: 3410, 1082, 1032 [1]

FAB-MSm/z: 779 [M-H], 617 [M-C6H11O5] [1]

1H NMR (270 MHz, J/Hz, C5D5N): 0.77 (s, CH3-18), 0.89 (CH3-30), 0.90 (CH3-29), 0.98 (d, J = 5.6, CH3-21), 1.45 (CH3-28), 1.54 (CH3-26), 1.60 (CH3-27), 2.31 (brs, H-8), 3.65, 3.71 (q, J = 7.9, H2-19), 3.64 (brs, H-3), 5.56 (dd, J = 3.3, 9.9, H-7), 5.79 (ddd-like, H-23), 6.01 (d, J = 15.8, H-24), 6.18 (d, J = 9.9, H-6)

β-D-Allp: 5.35 (d, J = 8.5, H-1)

β-D-Glcp: 4.98 (d, J = 7.6, H-1) [1]

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

Table 1

C-1

18.9

C-16

28.2

All-1

103.8

2

27.6

17

50.5

2

73.1

3

85.1

18

15.1

3

72.4

4

39.0

19

80.2

4

69.3

5

86.0

20

36.5

5

76.1

6

134.1

21

19.1

6

63.4

7

130.0

22...

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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