Two novel acylated flavonol glycosides, along with iridoids, triterpenes, steroids and a-tocopherolquinone, were iso lated from the leaves of Alibertia sessilis (Rubiaceae). The determination of the structures of the new compounds was based mainly on 1H- and 13C-NMR.

terpenoids, Rubiaceae, Iridoids, Alibertia sessilis, cylated flavonol glycosides, α-tocopherolquinone

• Compound ID: 20822
  

  a-L-Rhap-(1-6)-b-D-Glcp-(1-3)-Quercetin

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  Structure type: oligomer
  C27H30O16
  Trivial name: rutin, rutoside, rutin, quercetin rutinoside, rutoside, quercetin 3-O-rutinose, quercetin-3-O-rutinoside, quercetin 3-O-rutinoside
  Compound class: saponin glycoside, glycoside, flavonoid glycoside, flavonol glycoside, flavone glycoside
  Reference(s) to other database(s): CCSD:50720, CBank-STR:3399
  
   
  
  Alibertia sessilis
  CSDB ID 60341 (all data & tools)
• Compound ID: 27886
  

  pCoum-(9-2)-+ | a-L-Rhap-(1-6)-b-D-Glcp-(1-3)-Quercetin pCoum = p-coumaric acid

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  Structure type: oligomer
  Trivial name: quercetin-3-O-β-D-(2"-O-trans-p-coumaroyl)rutinoside
  Compound class: flavonol glycoside
  
   
  
  Alibertia sessilis
  CSDB ID 60339 (all data & tools)
• Compound ID: 27887
  

  pCoum-(9-2)-+ | a-L-Rhap-(1-6)-b-D-Glcp-(1-3)-Kaempferol pCoum = p-coumaric acid

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  Structure type: oligomer
  Trivial name: kaempferol-3-O-β-D-(2"-O-trans-p-coumaroyl)rutinoside
  Compound class: flavonol glycoside
  
   
  
  Alibertia sessilis
  CSDB ID 60340 (all data & tools)