Extraction of the roots of Baptisia australis afforded a new triterpenoid saponin, baptisiasaponin I together with kaikasaponin III. The structure of baprisiasaponin I was elucidated as 3-O-alpha-L-rhamnopyranosyl-(1-->2)-beta-D-xylopyranosyl-(1-->2)-beta-D-glucuronopyranosyl sophoradiol on the basis of its spectral data and chemical degradation.

Leguminosae, sophoradiol, Baptisia australis, saponin triterpene, baptisiasaponin I

• Compound ID: 28961
  

  a-L-Rhap-(1-2)-b-D-Xylp-(1-2)-b-D-GlcpA-(1-3)-Subst Subst = sophoradiol = SMILES C[C@]12CC{3}[C@H](O)C(C)(C)[C@@H]1CC[C@]3(C)[C@@H]2CC=C4[C@@]3(C)CC[C@]5(C)[C@H]4CC(C)(C)C{22}[C@H]5O

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  Structure type: oligomer ; 895 [M-H]-
  Trivial name: baptisiasaponin I
  Compound class: triterpenoid glycoside
  
   
  
  Baptisia australis
  CSDB ID 61570 (all data & tools)
• Compound ID: 28962
  

  a-L-Rhap-(1-2)-b-D-Glcp-(1-2)-b-D-GlcpA-(1-3)-Subst Subst = sophoradiol = SMILES C[C@]12CC{3}[C@H](O)C(C)(C)[C@@H]1CC[C@]3(C)[C@@H]2CC=C4[C@@]3(C)CC[C@]5(C)[C@H]4CC(C)(C)C{22}[C@H]5O

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  Structure type: oligomer ; 925 [M-H]-
  Trivial name: kaikasaponin III
  Compound class: triterpenoid glycoside
  
   
  
  Baptisia australis
  CSDB ID 61571 (all data & tools)