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Goyaglycoside-g

Reference work entry

CAS Registry Number: 333333-14-5 Open image in new window

Taxonomy: Physicochemical and Pharmacological Properties of Triterpene Glycosides – Glycosides of Aglycones of Cucurbitane Type – 5,19-Epoxy-5β-cucurbita-6,24-diene-3β,23-diol

Biological source: Momordica charantia [1]

C43H70O14: 810.476

[α]D27−79.2° (c 0.5, MeOH) [1]

IR (KBr) νmax cm−1: 3434, 1655, 1080, 1034 [1]

FAB-MSm/z: 809 [M-H]-, 647 [M-C6H11O5] [1]

1H NMR (270 MHz, J/Hz, C5D5N): 3.69 (brs, H-3), 6.15 (dd, J = 2.3, 9.9, H-6), 5.61 (dd, J = 3.3, 9.9, H-7), 3.12 (dd-like, H-8), 0.91 (s, CH3-18), 4.89 (s, CH3-19), 1.00 (d, J = 5.3, CH3-21), 5.79 (ddd, H-23), 6.01 (d, J = 15.8, H-24), 1.54 (CH3-26), 1.60 (CH3-27), 1.44 (CH3-28), 0.83 (CH3-29), 0.92 (CH3-30), 3.50 (CH3O-19)

β-D-Allp: 5.43 (d, J = 7.6, H-1)

β-D-Glcp: 4.99 (d, J = 7.9, H-1) [1]

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

Table 1

C-1

18.7

C-16

28.2

All-1

102.5

2

27.4

17

50.6

2

73.7

3

83.7

18

14.9

3

71.8

4

39.1

19

112.5

4

69.3

5

85.6

20

36.5

5

76.4

6

133.2

21

19.1

6

63.3

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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