Two new spirostanol saponins, tuberosides D and E, have been isolated from the seeds of Allium tuberosum. On the basis of spectral data and chemical reactions, their structures were established as (25S)-5α-spirostane-2α,3β-diol 3-O-α-L-rhamnopyranosyl-(1→2)-O-[α-L-rhamnopyranosyl-(1→4)]-O-β-D-glucopyranoside and (25S)-5α-spirostan-2α,3β-diol 3-O-β-D-glucopyranosyl-(1→2)-O-[α-L-rhamnopyranosyl-(1→4)]-O-β-D-glucopyranoside, respectively.

spirostanol saponin, Allium tuberosum, tuberoside D, tuberoside E

• Compound ID: 30567
  

  a-L-Rhap-(1-4)-+ | a-L-Rhap-(1-2)-b-D-Glcp-(1-3)-Subst Subst = neogitogenin = SMILES C[C@@H]1[C@]2(OC[C@@H](C)CC2)O[C@@]3([H])C[C@@]4([H])[C@]5([H])CC[C@@]6([H])C{3}[C@@H](O){2}[C@H](O)C[C@]6(C)[C@@]5([H])CC[C@]4(C)[C@]31[H]

  Show graphically

  Show legend Show as text

  Structure type: oligomer ; 887 [M+H]+
  C45H74O17
  Trivial name: tuberoside D
  Compound class: saponin glycoside
  
   
  
  Allium tuberosum
  CSDB ID 63132 (all data & tools)
• Compound ID: 30568
  

  b-D-Glcp-(1-4)-+ | a-L-Rhap-(1-2)-b-D-Glcp-(1-3)-Subst Subst = neogitogenin = SMILES C[C@@H]1[C@]2(OC[C@@H](C)CC2)O[C@@]3([H])C[C@@]4([H])[C@]5([H])CC[C@@]6([H])C{3}[C@@H](O){2}[C@H](O)C[C@]6(C)[C@@]5([H])CC[C@]4(C)[C@]31[H]

  Show graphically

  Show legend Show as text

  Structure type: oligomer ; 903 [M+H]+
  C45H74O18
  Trivial name: tuberoside E
  Compound class: saponin glycoside
  
   
  
  Allium tuberosum
  CSDB ID 63133 (all data & tools)