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1. (Article ID: 1000)
 
Molinaro A, Silipo A, Lanzetta R, Newman M, Dow JM, Parrilli M
Structural elucidation of the O-chain of the lipopolysaccharide from Xanthomonas campestris strain 8004
Carbohydrate Research 338(3) (2003) 277-281
 

A novel O-specific polysaccharide containing 3-acetamido-3-deoxy-α-D-fucose (Fuc3NAc) and D-rhamnose was isolated from the phenol-soluble lipopolysaccharide fraction of the plant associated bacterium Xanthomonas campestris strain 8004. The structure, determined by means of chemical analysis and 1D and 2D NMR spectroscopy, showed a branched trisaccharide repeating unit, as shown below: [formula: see text].

NMR, O-specific polysaccharide, Xanthomonas campestris, Phytopathogenic bacteria

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2. (Article ID: 10928)
 
Gluchoff-Fiasson K, Fiasson JL, Favre-Bonvin J
Quercetin glycosides from Antarctic Ranunculus species
Phytochemistry 37 (1994) 1629-1633
 

Four major quercetin triglycosides were isolated from the leaves of antarctic Ranunculus species: quercetin 3-sophoroside-7-glucoside, quercetin 3-sambubioside-7-glucoside and the corresponding 2'''-caffeoyl derivatives. Quercetin 3-(2'''-caffeyl-sambubioside)-7-glucoside is reported for the first time. Quercetin 3-diglucoside, quercetin 3-xylosylglucoside, quercetin 3-(ferulylsophoroside)-7-glucoside and the previously unquoted quercetin 3-(ferulylsambubioside)-7-glucoside, quercetin 3-(p-coumarylsophoroside)-7-glucoside, quercetin 3-(p-coumarylsambubioside)-7-glucoside and quercetin 3-(caffeylarabinosylglucoside)-7-glucoside were partially characterized.

flavonoids, leaves, Ranunculaceae, Ranunculus, quercetin glycosides, acylated quercetin glycosides

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