(2R,3S,4S,5R)-2,3,4,5-tetrahydroxyhexanal

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: D-Fucose (6-deoxy D-galactose) was reduced [a composition in total of 500 ml containing D-fucose at 1% and 20 ml of the Raney-nickel catalyst] to produce D-fucitol (6-deoxy D-galactitol). FIG. 57(a) shows HPLC analysis results of D-fucose before reduction and FIG. 57(b) shows HPLC analysis results of 6-deoxy L-galactitol after the reduction. The optical rotation of 6-deoxy L-galactitol was +1.7, and FIG. 58 shows 13C NMR spectrum of 6-deoxy L-galactitol.

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 6-Deoxy D-talose was produced by allowing L-ribose isomerase to react with 6-deoxy D-tagatose produced from D-fucose.

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: The colour response obtained with 0.5 M D-fucose was 46% of the corresponding response seen with L-arabinose. The molar ratio between the D-fucose and L-arabinose activity could not be calculated, since no standard curve was obtained for D-fuculose