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Clinoposaponin XVIII

Reference work entry

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Taxonomy: Physicochemical and Pharmacological Properties of Triterpene Glycosides – Glycosides of Aglycones of Oleanene Type – 16-Keto-saikogenin F

Biological source: Clinopodium vulgare [1]

C48H76O18: 940.503

[α]D23 + 24.3° (c 0.52, MeOH) [1]

FAB-MS (positive ion mode) m/z: 963 (M + Na)+ [1]

CD (c 0.42, MeOH):−118400 (298), −105000 (307), −52400 (317) [1]

1H NMR (400 MHz, J/Hz, C5D5N): 0.82, 0.87, 0.97, 1.02, 1.07, 1.37 (s, CH3-30, 29, 25, 24, 27, 26), 3.50, 3.92 (d, J = 8.0, H2-28), 3.72, 4.37 (d, J = 11.0, H2-23), 4.14 (dd, J = 12.0, 4.5, H-3), 5.68 (dd, J = 10.5, 2.5, H-12), 6.04 (brd, J = 10.5, H-11)

β-D-Fucp: 4.91 (d, J = 7.5, H-1), 4.66 (dd, J = 8.0, 7.5, H-2), 4.10 (H-3), 4.24 (brs, H-4), 1.41 (d, J = 6.5, CH3-6)

β-D-Glcp: 5.59 (d, J = 7.5, H-1), 4.10 (H-2), 4.20 (H-3), 4.20 (H-4), 3.65 (m, H-5)

β-D-Glcp′: 5.30 (d, J = 7.5, H-1), 4.00 (dd, J = 8.0, 7.5, H-2), 4.22 (H-3), 4.22 (H-4), 3.95 (m, H-5) [1]

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

Table 1

C-1

38.5

C-16

212.2...

References

  1. 1.
    T. Miyase, Y. Matsushima, Chem. Pharm. Bull. 45(9), 1493 (1997)CrossRefGoogle Scholar

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