Goyaglycoside-h

Reference work entry

CAS Registry Number: 333333-19-0 Open image in new window

Taxonomy: Physicochemical and Pharmacological Properties of Triterpene Glycosides – Glycosides of Aglycones of Cucurbitane Type – 3β,22(S),23(R),25-Tetrahydroxy-cucurbita-5-en-24-one

Biological source: Momordica charantia [1]

C42H70O15: 814.471

[α]D24 + 0.7° (c 0.5, C5H5N) [1]

IR (KBr) νmax cm−1: 3432, 1717, 1076, 1038 [1]

FAB-MSm/z: 813 [M-H], 491 [M-C12H21O10] [1]

1H NMR (270 MHz, J/Hz, C5D5N): 3.73 (brs, H-3), 5.45 (dd-like, H-6), 1.65 (brs, H-8), 1.06 (s, CH3-18), 0.88 (CH3-19), 1.50 (d, J = 6.3, CH3-21), 4.81 (dd-like, H-22), 5.53 (d-like, H-23), 1.72 (s, CH3-26), 1.63 (s, CH3-27), 0.91 (s, CH3-28), 1.48 (s, CH3-29), 0.80 (s, CH3-30)

β-D-Glcp: 4.80 (d, J = 7.6, H-1)

β-D-Glcp′: 5.17 (d, J = 7.6, H-1) [1]

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

Table 1

C-1

22.7

C-16

25.3

Glc-1

106.9

2

29.6

17

48.2

2

75.4

3

87.3

18

15.4

3

78.5

4

41.8

19

28.1

4

71.9

5

143.4

20

43.7

5

77.4

6

118.7

21

15.3

6

70.3

7

24.7

22

72.8

Glc′-1

105.3

8

43.9

23

75.2

References

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

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