Sulfuric acid magnesium salt (1:1) → (2R,3S,4R,5R)-2,3,4,5,6-pentahydroxyhexanal

HRID 1086792Notes

Reaction equation

HRID 1086792 reaction equation
[OH:1][CH:2]1[O:21][C@H:20]([CH2:22][OH:23])[C@@H:7]([O:8][C@@H]2O[C@H](CO)[C@H](O)[C@H](O)[C@H]2O)[C@H:5]([OH:6])[C@H:3]1[OH:4].P([O-])([O-])([O-])=O.[K+].[K+].[K+].S([O-])([O-])(=O)=O.[Mg+2]>>[O:1]=[CH:2][C@@H:3]([C@H:5]([C@@H:7]([C@@H:20]([CH2:22][OH:23])[OH:21])[OH:8])[OH:6])[OH:4]

Participants

4

Reactant 3

HCID 24083Sulfuric acid magnesium salt (1:1)HCID 62657Potassium Phosphate, TribasicHCID 440995(+)-Lactose

Product 1

HCID 107526(2R,3S,4R,5R)-2,3,4,5,6-pentahydroxyhexanal

Procedure

25g of lactose was added to 0.05M potassium phosphate buffer solution (pH 7.0) and heated to solution for a total quantity of 45 ml. Then, bacteria suspension (300 units as β-galactosidase) of streptococcus thermophilus YIT2046 obtained from a culture, 5 g of immobilized glucose isomerase GODO-AGI, and 0.25 ml IM-magnesium sulfate were added before addition of water so as to make the total quantity 50 ml. The thus-prepared liquid was reacted at 50° C. over night while being shaken. 1g of activated carbon was added to liquid to be reacted from which immobilized glucose isomerase and bacteria of streptococcus thermophilus had been filtered, and then the liquid was subjected to a decoloring processing. As a result, a colorless sugar liquid was obtained.

Workup

  1. temperatureheated to solution for a total quantity of 45 ml

Sources & evidence

ORD record
ord-d708c3762a4e4ddeab85a34eb0394ad0
Source dataset
uspto-grants-1991_07
Patent number
US05032509

Reaction notes

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