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Stelmatotriterpenoside F

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Taxonomy: Physicochemical and Pharmacological Properties of Triterpene Glycosides – Glycosides of Aglycones of Ursene Type –Asiatic acid

Biological source: Stelmatocrypton khasianum [1]

C48H78O20: 974.508

Mp: 217–220°C [1]

[α]D25 − 14.9° (c 0.27, MeOH) [1]

TOF-MSm/z: 1012.6 [M + K]+, 996.6 [M + Na]+ [1]

HR-SI-MSm/z: 649.3935 [M-2Glc] [1]

1H NMR (500 MHz, J/Hz, C5D5N): 0.80 (d, J = 6.0, CH3-30), 0.86 (d, J = 6.0, CH3-29), 0.99 (s, CH3-24), 1.03 (s, CH3-25), 1.06 (s, CH3-27), 1.14 (s, CH3-26), 2.46 (d, J = 12.0, H-18), 4.21 (H-2), 4.25 (H-3), 3.67 (d, J = 10.0), 4.54 (H2-23), 5.39 (t-like, H-12)

β-D-Glcp: 5.16 (d, J = 8.0, H-1), 4.10 (H-2), 4.12 (H-3), 4.20 (H-4), 3.90 (H-5), 4.31 (H-6), 4.54 (H-6)

β-D-Glcp′: 6.19 (d, J = 8.5, H-1), 4.08 (H-2), 4.21 (H-3), 4.34 (H-4), 4.08 (H-5), 4.32 (H-6), 4.70 (H-6)

β-D-Glcp″: 5.03 (d, J = 8.0, H-1), 4.00 (t, J = 8.0, H-2), 4.20 (H-3), 4.14 (H-4), 3.89 (H-5), 4.34 (H-6), 4.49 (H-6) [1]

13 C NMR (125 MHz, C 5D 5N): [ 1]

Table 1

C-1

References

  1. 1.
    Q. Zhang, Y. Zhao, B. Wang, G. Tu, Chem. Pharm. Bull. 51(5), 574 (2003)CrossRefGoogle Scholar

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© Springer Science+Business Media New York 2013

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