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Structure type: oligomer ; 1196 [M-H]-
C₅₂H₉₂O₃₀
Trivial name: pharbitic acid B
Compound class: resin glycoside
Contained glycoepitopes: IEDB_136105,IEDB_140628,IEDB_142488,IEDB_144144,IEDB_146664,IEDB_225177,IEDB_885823,IEDB_983931,SB_192

• Article ID: 10394
  Ono M, Noda N, Kawasaki T, Miyahara K "Resin glycosides. VII. Reinvestigation of the component organic and glycosidic acids of pharbitin, the crude ether-insoluble resin glycoside (Convolvulin) of Pharbitidis semen (seeds of Pharbitis nil)" - Chemical and Pharmaceutical Bulletin 38 (1990) 1892-1897
  

  Alkaline hydrolysis of the ether-insoluble resin glycoside ("convolvulin") fraction, pharbitin, of the seeds of Pharbitis nil (Convolvulaceae) provided three organic acids, S-2-methylbutyric acid, (2R, 3R)-nilic acid and tiglic acid, and a new glycosidic acid named pharbitic acid B along with the known compounds pharbitic acids C and D. Pharbitic acid B was characterized as (3S,11S)-3,11-dihydroxyhexadecanoic acid 11-O-α-L-rhamnopyranosyl-(1→3)-O-β-D-quinovopyranosyl-(1→4)-O-α-L-rhamnopyranosyl-(1→2)-O-β-D-glucopyranosyl-(1→2)-[O-α-L-rhamnopyranosyl-(1→6)]-β-D-glucopyranoside. The structures of the sugar moieties of pharbitic acids C and D were revised.

  resin glycoside, pharbitin, Pharbitidis Semen, Pharbitis nil, glycosidic acid, pharbitic acid B, pharbitic acid C, pharbitic acid D, (3S, 11S)-ipurolic acid oligoside, 11S)-3, 11-dihydroxyhexadecanoic acid oligoside, hydroxyfatty acid FD-MS

  Journal NLM ID: 0377775
  WWW link: http://ci.nii.ac.jp/naid/110003628670
  Publisher: Pharmaceutical Society Of Japan
  Institutions: Faculty of Pharmaceutical Sciences, Setsunan University, Japan
  Methods: 13C NMR, 1H NMR, FAB-MS, acid hydrolysis, alkaline hydrolysis, permethylation analysis
  
   
  
  Pharbitis nil
  CSDB ID 119689 (all data & tools)