Phosphate Esters of 3-Carbon Sugars

These compounds, listed in Table V, are all interjnediates in the metabolism of D-glucose. (See Chapter XIII.) Although all have been isolated from natural sources, they are most readily available in pure form by synthetic procedures. The phosphates of glyceraldehyde and dihydroxyacetone are very sensitive to decomposition by alkali with the liberation of inorganic phosphate, a characteristic on which their determination in the presence of other alkali-stable phosphate esters is based 231a). They are also decomposed by hot dilute acid. 

The Specific Rotation of Some Sugar Phosphates [Compiled by L. F. Leloir 151)] 

Compound Salt Solvent Light source [a] Refer- ence 

D-Fructose 6-phosphate D-Fructose 1,6-diphosphate a-D-Galactose 1-phosphate 

D-Tagatose 6-phosphate L-Sorbose 1-phosphate L-Sorbose 6-phosphate Trehalose monophosphate 

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