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Structure type: oligomer
Trivial name: brachyoside C
Compound class: saponin glycoside
Contained glycoepitopes: IEDB_114701,IEDB_142488,IEDB_146664,IEDB_167188,IEDB_174332,IEDB_983931,SB_192

• Article ID: 11735
  Bedir E, Calis I, Aquino R, Piacente S, Pizza C "Trojanoside H: a cycloartane-type glycoside from the aerial parts of Astragalus trojanus" - Phytochemistry 51(8) (1999) 1017-1020
  

  A novel cycloartane-type glycoside was isolated from the aerial parts of Astragalus trojanus along with the known glycosides astragaloside II, astragaloside IV, astragaloside VII, brachyoside B, brachyoside C and the pterocarpan derivative maackiain. The structure of 1 was determined by spectral methods (1-D and 2-D NMR, and FABMS) and established as 3-O-β-[α-L-arabinopyranosyl(1→2)β-D-xylopyranosyl]-6-O-β-D-glucopyranosyl-20(R),24(S)-epoxy-3β,6α,16β,25-tetrahydroxycycloartane.

  isoflavone, Leguminosae, Astragalus trojanus, cycloartane type glycoside, trojanoside H, maackiain

  Publication DOI: 10.1016/S0031-9422(99)00035-7
  Journal NLM ID: 0151434
  Publisher: Elsevier
  Correspondence: Çalis I
  Institutions: Department of Pharmacognosy, Faculty of Pharmacy, Hacettepe University, Ankara, Turkey, Dipartimento di Scienze Farmaceutiche, Università degli Studi di Salerno, 84084 Penta di Fisciano, Salerno, Italy
  Methods: 13C NMR, 1H NMR, FAB-MS, optical rotation measurement, ROESY, TOCSY, DQF-COSY, HMBC, HSQC
  
   
  
  Astragalus trojanus
  CSDB ID 62721 (all data & tools)
• Article ID: 11830
  Bedir E, Calis I, Aquino R, Piacente S, Pizza C "Secondary metabolites from the roots of Astragalus trojanus" - Journal of Natural Products 62(4) (1999) 563-568
  

  Six novel cycloartane-type glycosides were isolated from the roots of Astragalus trojanus. Two of these, compounds 1 and 2, have (20R,24S)-epoxy-3β,6α,16β,25-tetrahydroxycycloartane as the aglycon, while compounds 3-6 possess 3β,6α,16β,(24S),25-pentahydroxycycloartane as the aglycon. The saccharide moieties linked to the C-3, C-6, and C-24 or C-25 positions of the aglycons in 1-6 contained either xylopyranose, glucopyranose, rhamnopyranose, or arabinopyranose units. Structure elucidation of compounds 1-6 was accomplished through the extensive use of 1D and 2D NMR techniques. In addition, a new oleanene glycoside (7) and a new tryptophan derivative (8) were also isolated and characterized.

  glycoside, cycloartane, Astragalus trojanus

  NCBI PubMed ID: 10217709
  Publication DOI: 10.1021/np980399t
  Journal NLM ID: 7906882
  Publisher: American Society of Pharmacognosy
  Correspondence: Çalis I
  Institutions: Dipartimento di Scienze Farmaceutiche, Università degli Studi di Salerno, 84084 Penta di Fisciano, Salerno, Italy, epartment of Pharmacognosy, Faculty of Pharmacy, Hacettepe University, Ankara, Turkey
  Methods: 13C NMR, 1H NMR, IR, FAB-MS, optical rotation measurement, TOCSY, DQF-COSY, HMBC, HOHAHA, HSQC
  
   
  
  Astragalus trojanus
  CSDB ID 63175 (all data & tools)