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Compound 2

Reference work entry

CAS Registry Number: 132741-61-8 Open image in new window

Taxonomy: Physicochemical and Pharmacological Properties of Triterpene Glycosides – Miscellaneous Glycosides – 25-Acetoxy-2β,3β,16α-trihydroxy-9-methyl-19-norlanosta-5,23-dien-22-one

Biological source: Picrorhiza kurrooa [1]

C38H60O11: 692.413

Mp: 132–135°C [1]

UV λmax nm: 200, 230 [1]

FAB-MSm/z: 699 [M + Li]+, 639 [M + Li-HOAc]+ [1]

1H NMR (300 MHz, J/Hz, CD3OD): 1.75, 2.51 (H2-1), 4.28 (ddd, H-2), 3.68 (d, H-3), 5.67 (brd, H-6), 1.89 (brdd, Ha-7), 2.48 (brdd, Hb-7), 1.86 (brd, H-8), 2.52 (H-10), 1.38 (d, Ha-15), 1.79 (dd, Hb-15), 4.11 (brt, H-16), 2.17 (dd, H-17), 3.13 (dd, H-20), 6.39 (d, Ha-23), 7.07 (d, Ha-24), 1.22 (s, CH3-18), 1.04 (s, CH3-19), 1.05 (d, CH3-21), 1.64 (s, CH3-26), 1.63 (s, CH3-27), 1.11 (s, CH3-28), 1.27 (s, CH3-29), 1.18 (s, CH3-30), 2.09 (OAc)

β-D-Glcp: 4.52 (d, H-1), 3.99, 3.76 (dd, H2-6) [1]

13 C NMR (75.5 MHz, CD 3OD): [ 1]

Table 1

C-1

28.97

C-16

77.40

Glc-1

102.03

2

77.58

17

58.48

2

75.23

3

77.13

18

17.37...

References

  1. 1.
    H. Stuppner, E.P. Muller, H. Wagner, Phytochemistry 30, 305 (1991)CrossRefGoogle Scholar

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© Springer Science+Business Media New York 2013

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