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Laetiposide G

Reference work entry

CAS Registry Number: 309751-43-7 Open image in new window

Taxonomy: Physicochemical and Pharmacological Properties of Triterpene Glycosides – Glycosides of Aglycones of Cucurbitane Type – Mogrol

Biological source: Laetiporus versisporus [1]

C37H60O9: 648.423

Mp: 238–240°C [1]

[α]D25 + 28.8° (c 0.3, MeOH) [1]

IR (KBr) νmax cm−1: 3400, 1730, 1060 [1]

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

1H NMR (400 MHz, J/Hz, C5D5N): 3.44 (t, J = 8.1, H-3), 4.62 (dd, J = 9.5, 6.0, H-15), 1.21 (s, CH3-18), 1.01 (s, CH3-19), 1.00 (d, J = 6.8, CH3-26), 1.00 (d, J = 6.8, CH3-27), 1.23 (s, CH3-28), 1.06 (s, CH3-29), 1.36 (s, CH3-30), 4.81, 4.87 (brs, H2-31)

β-D-Glcp: 6.44 (d, J = 8.1, H-1), 4.23 (dd, J = 9.1, 8.1, H-2), 4.29 (dd, J = 9.4, 9.1, H-3), 4.35 (dd, J = 9.4, 8.8, H-4), 4.05 (m, H-5), 4.26 (dd, J = 11.3, 4.4, H-6), 4.46 (dd, J = 11.3, 2.3, H-6) [1]

13 C NMR (100 MHz, C 5D 5N): [ 1]

Table 1

C-1

36.4

C-17

46.8

Glc-1

95.9

2

29.0

18

16.7

2

74.2

3

78.2

19

19.7

3

79.2

4

39.8

20

48.6

4

71.5

5

51.0

21

175.9

5

79.4

6

18.5

22

References

  1. 1.
    K. Yoshikawa, K. Matsumoto, C. Mine, S. Bando, S. Arihara, Chem. Pharm. Bull. 48(10), 1418 (2000)CrossRefGoogle Scholar

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© Springer Science+Business Media New York 2013

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