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Laetiposide E

Reference work entry

CAS Registry Number: 309751-39-1 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]

C36H58O8: 618.413

Mp: 218–220°C [1]

[α]D25 + 9.1° (c 0.3, MeOH) [1]

IR (KBr) νmax cm−1: 3400, 1700, 1060 [1]

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

1H NMR (400 MHz, J/Hz, C5D5N): 3.13 (dd, J = 11.0, 4.4, H-3), 4.62 (brs, H-7), 0.99 (s, CH3-18), 0.99 (s, CH3-19), 1.00 (d, J = 6.2, CH3-26), 1.00 (d, J = 6.2, CH3-27), 1.48 (s, CH3-28), 1.10 (s, CH3-29), 1.45 (s, CH3-30), 4.80, 4.86 (brs, H2-31)

β-D-Xylp: 4.88 (d, J = 7.7, H-1), 3.95 (dd, J = 8.4, 7.7, H-2), 4.19 (dd, J = 8.4, 8.4, H-3), 4.23 (m, H-4), 3.79 (dd, J = 10.5, 10.5, H-5), 4.40 (dd, J = 10.5, 4.8, H-5) [1]

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

Table 1

C-1

35.6

C-17

48.1

Xyl-1

102.0

2

28.8

18

17.0

2

75.3

3

78.0

19

18.3

3

78.8

4

39.6

20

49.7

4

72.4

5

44.5

21

178.8

5

67.8

6

23.9

22

32.1

   

7

71.5

23

33.1

   

8

134.4

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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