
%0 Journal Article
%A Anet, EFL 
%T Degradation of carbohydrates. I. Isolation of 3-deoxyhexosones
%J Australian Journal of Chemistry
%D 1960/09/01
%V 13
%N 3
%P 396-403
%K 
%R https://doi.org/10.1071/CH9600396
%U https://www.publish.csiro.au/paper/CH9600396 
%X The two possible 3-deoxy-D-hexosones were prepared in high yields by the decomposition of diketoseamino acids in dilute aqueous solution at pH 5 and 100 °C. Small amounts of the corresponding epimeric aldoses were also isolated.  1,1'-(Carboxymethylamino)bis-[1-deoxy-D-fructose], the preparation of which has been improved, gave 3-deoxy-D-erythrohexosone which was characterized as the 2,4-dinitro- and 2,5-dichlorophenylosazones and triacetates, and as the 4-nitrophenyl-osazone. The 4-nitro- and 2,4-dinitrophenylosazones were identical with those prepared from 3-deoxy-D-ribohexose. 1,1'-(Carboxymethylamino)bis-[1-deoxy-D-tagatose] yielded 3-deoxy-D-threohexosone characterized as the 2,4-dinitrophenylosazone and triacetate and 2,5-dichlorophenylosazone.   Chromatographic evidence suggests that 3-deoxyhexosones are also formed during the decomposition of other substituted 1-amino-1-deoxyketoses.   A mechanism for the formation of 3-deoxyhexosones and of the epimeric aldoses from diketoseamino acids is proposed. 
