Arabinose halogen derivatives

However, in the pentose series not all of the normal acetylglycosyl halides have a like configuration on the first carbon atom. This follows from the fact that in the arabinose-ribose epimeric pair it is the ribose and not the arabinose which has orthoester derivatives. Consequently, in the normal halides of these two pentoses, the halogen atoms must occupy the left side positions of the first carbon atoms and the names of these substances are, respectively, l,2-[Pg.126]

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