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Carbohydrate methyl ethers 10. hydrogenolysis of benzylidene acetals synthesis of mono o methyl and di o methyl ethers of l arabinose



Carbohydrate methyl ethers 10. hydrogenolysis of benzylidene acetals synthesis of mono o methyl and di o methyl ethers of l arabinose



Acta Chimica Academiae Scientiarum Hungaricae 107(3): 213-220



D- and L-Arabinose frequently occur in nature as the components of plant polysaccharides and plant glycosides, primarily as the carbohydrate component of saponins. The methyl ethers of D- and L-arabinose are essential standard compounds in the structural examination of polysaccharides, saponin glycosides and oligosaccharides containing arabinose. Various methods are known for the syntheses of arabinose methyl ethers starting from different compounds. A facile route is described for the synthesis of all the mono- and di-O-methyl ethers of L-arabinose using the exo- and endo-isomers of benzyl 3,4-O-benzylidene-.beta.-L-arabinopyranoside as starting material.

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