The structures of two new flavonoid triglycosides isolated from leaves of Buddleja madagascariensis have been established as hesperetin and diosmetin 7-O (2",6"-di-O-alpha-L-rhamnopyranosyl)-beta-D-glucopyranosides using mass and NMR spectroscopy. Scutellarein 7-glucoside is reported from this plant for the first time.

Loganiaceae, Buddleja madagascariensis, flavanone and flavone glycosides, hesperetin and diosmetin 7-2, 6 -dirhamnosyl) glucosides, H-1, C-13 and 2D NMR

• Compound ID: 29066
  

  a-L-Rhap-(1-6)-+ | a-L-Rhap-(1-2)-b-D-Glcp-(1-7)-Subst Subst = hesperetin = SMILES O=C(C1=C(O/2)C={7}C(O)C={5}C1O)CC2=C3C={54}C(C(OC)=CC/3)O

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  Structure type: oligomer ; 755 [M-H]-
  C34H44O19
  Compound class: glycoside
  
   
  
  Buddleja madagascariensis
  CSDB ID 61673 (all data & tools)
• Compound ID: 29067
  

  a-L-Rhap-(1-6)-+ | a-L-Rhap-(1-2)-b-D-Glcp-(1-7)-Subst Subst = diosmetin = SMILES COC1={53}C(O)C=C(C2=CC(C3={5}C(O){6}C={7}C(O){8}C=C3O2)=O)C=C1

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  Structure type: oligomer ; 753 [M-H]-
  C34H42O19
  Compound class: glycoside
  
   
  
  Buddleja madagascariensis
  CSDB ID 61935 (all data & tools)
• Compound ID: 29068
  

  a-L-Rhap-(1-6)-+ | a-L-Rhap-(1-2)-b-D-Glcp-(1-7)-Subst Subst = scutellarein = SMILES O=C(C1=C(C={7}C(O){6}C(O)={5}C1O)O2)C=C2C3=CC={54}C(O)C=C3

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  Structure type: oligomer ; 753 [M-H]-
  C34H42O19
  Compound class: glycoside
  
   
  
  Buddleja madagascariensis
  CSDB ID 61674 (all data & tools)