Studies of tritylated pentoses and methyl pentoses. I. The O-tritylation of methyl .ALPHA.-D-fucopyranoside.
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Two trityl derivatives of fucose, methyl 2-<I>O</I>- (II) and 3-<I>O</I>-trityl α-D-fucopyranoside (III), were obtained in good yields by the reaction of methyl α-D-fucopyranoside (I) and trityl chloride in pyridine. The ratio of II and III in the reaction mixture was about 3 : 2. The structures were mainly established by NMR with appropriate derivatives. The gas chromatography-mass spectrometry of the partial methyl ethers of I was also discussed.
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