Altrose, derivatives, Table

Crystalline L-altrose was described in 1934 by Austin and Humoller. After improving the methods for the preparation of L-ribose," they applied the cyanohydrin synthesis to 30 g. of that sugar and obtained 17 g. of crystalline calcium L-altronate and 14.5 g. of crystalline L-allono-7-lactone. Reduction of the latter with sodium amalgam yielded crystalline L-allose. The calcium L-altronate, by appropriate reactions, was converted to L-altrose, and the last of the sixteen theoretically possible aldohexoses had been prepared. Data on L-altrose and its derivatives are included in Table I. 

In addition to the transformations of n-glucose to n-altrose and its derivatives which have been described in most of the references between 53 and 67, similar transformations may be found in articles by Haworth, Hirst and Panizzon, by Peat and Wiggins," by Lake and Peat, " by Robertson and Myers, and by Young and Elderfield, Data on all these derivatives are reported in Table I. 

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