Two new triterpenoid saponins, beciumecine 1 and 2, were isolated from the root bark of Becium grandiflorum var. obovatum and their structures established as 3-O-(beta-D-glucopyranosyl) terminolic acid 28-O-beta-D-apiofuranosyl(1-3)-[alpha-L-rhamnopy-anosyl (1-3)-beta-D-xylopyranosyl(1-4)]-alpha-L-rhamnopyranosyl (1-2)-alpha-L-arabinopyranoside and 3-O-(beta-D-glucopyranosyl) 24-hydroxyterminolic acid 28-O-alpha-L-rhamnopyranosyl(1-3)-beta-D-xylopyranosyl(1-4)-alpha-L- rhamnopyranosyl(1-2)-alpha-L-arabinopyranoside, respectively.

triterpenoid saponins, Lamiaceae, Becium grandiflorum var. obovatum

• Compound ID: 28978
  

  b-D-Apif-(1-3)-+ b-D-Glcp-(1-3)-+ | | a-L-Rhap-(1-3)-b-D-Xylp-(1-4)-a-L-Rhap-(1-2)-a-L-Arap-(1-28)-Subst Subst = terminolic acid = SMILES C[C@@]12CC[C@@]3({28}C(O)=O)CCC(C)(C)C[C@H]3C1=CC[C@H]4[C@@]2(C)C{23}[C@@H](O)[C@H]5[C@]4(C)C{2}[C@@H](O){3}[C@H](O)[C@]5(CO)C

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  Structure type: oligomer ; 1381.2 [M+Na]+
  Trivial name: beciumecine 1
  Compound class: triterpenoid glycoside
  
   
  
  Becium grandiforum var. obovatum
  CSDB ID 61586 (all data & tools)
• Compound ID: 28979
  

  b-D-Glcp-(1-3)-+ | a-L-Rhap-(1-3)-b-D-Xylp-(1-4)-a-L-Rhap-(1-2)-a-L-Arap-(1-28)-Subst Subst = 24-hydroxyterminolic acid = SMILES C[C@@]12CC[C@@]3({28}C(O)=O)CCC(C[C@H]3C1=CC[C@H]4[C@@]2(C)C{23}[C@@H](O)[C@H]5[C@]4(C)C{2}[C@@H](O){3}[C@H](O)C5({6}CO){24}CO)(C)C

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  Structure type: oligomer ; 1262.4 [M+Na]+
  Trivial name: beciumecine 2
  Compound class: triterpenoid glycoside
  
   
  
  Becium grandiforum var. obovatum
  CSDB ID 61587 (all data & tools)