Astramembrannin II

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Upper classes



Astramembrannin II
Astramembrannin II.png
Structural Information
Systematic Name (3beta,6alpha,16beta,24R)-20,24-Epoxy-6,16,25-trihydroxy-9,19-cyclolanostan-3-yl-beta-D-xylopyranoside
Common Name
  • Astramembrannin II
  • 1H,19H-Cyclopropa[9,10]cyclopenta[a]phenanthrene beta-D-xylopyranoside deriv.
  • 9,19-Cyclolanostane beta-D-xylopyranoside deriv.
  • Cyclosiversigenin 3-O-beta-D-xylopyranoside
Symbol
Formula C35H58O8
Exact Mass 606.413168832
Average Mass 606.8302199999999
SMILES C(C5)C(C4C(C7)(C(C(C7O)C(O6)(C)CCC(C(C)(C)O)6)5C)C)(C1)C1(C(CC4)2)CCC(OC(O3)C(O)C(O)C(C3)O)C(C)(C)2
Physicochemical Information
Melting Point
Boiling Point
Density
Optical Rotation
Reflactive Index
Solubility
Spectral Information
Mass Spectra
UV Spectra
IR Spectra
NMR Spectra
Chromatograms





Spectroscopic Data

M.P. 289 - 290 °C
1H-NMR (CDCl3+C5D5N) 0.33 (d, J=4.0 Hz, H-19A), 0.51 (d, J=4.0 Hz, H-19B), 0.96 (s, CH3), 1.14 (s, CH3), 1.23 (s, CH3), 1.26 (s, CH3), 1.35 (s, CH3), 3.25 (m, H-3alpha), 4.10 (m, H-5eq of Xyl), 4.57 (d, J=7.5 Hz, H-1 of Xyl), 4.27 (m, H-16alpha)
13C-NMR C-2) 30.4, (3) 88.7, (4) 42.7, (5) 54.0, (6) 68.1, (7) 38.7, (16) 73.5, (20) 87.2, (24) 81.7, (25) 71.3 Xyl (1) 107.7, (2) 75.6, (3) 78.5, (4) 71.3, (5) 67.0

C. Yu Qun et al., Huaxue Xuebao, 43, 581 (1985).

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