Compound 3

Reference work entry

CAS Registry Number: 132741-62-9 Open image in new window

Taxonomy: Physicochemical and Pharmacological Properties of Triterpene Glycosides – Miscellaneous Glycosides – 25-Acetoxy-2β,3β,16α,20-tetrahydroxy-9-methyl-19-norlanosta-5,23(Z)-dien-22-one

Biological source: Picrorhiza kurrooa [1]

C38H60O12: 708.408

Mp: 126–130°C [1]

UV λmax nm: 200, 230 [1]

FAB-MSm/z: 715 [M + Li]+, 655 [M + Li-HOAc]+ [1]

1H NMR (300 MHz, J/Hz, CD3OD): 1.54, 2.52 (ddd, H2-1), 4.29 (ddd, H-2), 3.68 (d, H-3), 5.67 (brd, H-6), 1.86 (ddd, Ha-7), 2.46 (brdd, Hb-7), 1.87 (brd, H-8), 2.52 (H-10), 1.27 (d, H-15), 1.77 (dd, H-15), 4.47 (brt, H-16), 2.44 (d, H-17), 6.32 (d, H-23), 6.53 (d, H-24), 1.15 (CH3-18), 1.03 (s, CH3-19), 1.46 (d, CH3-21), 1.72 (s, CH3-26), 1.71 (s, CH3-27), 1.12 (s, CH3-28), 1.27 (s, CH3-29), 1.20 (s, CH3-30), 2.05 (OAc)

β-D-Glcp: 4.52 (d, H-1), 3.99, 3.77 (dd, H-6) [1]

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

Table 1

C-1

28.96

C-16

72.18

Glc-1

102.03

2

77.6

17

60.39

2

75.23

3

77.13

18

19.26

3

78.12

4

42.25...

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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