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[Synthesis of Beta-Maltosides, Derivatives of P-Nitrophenol, 2-chloro-4-nitrophenol, and 4-methylumbelliferone, and Their Use as Substrates for Determining Alpha-Glucosidase Activity]

[Synthesis of Beta-Maltosides, Derivatives of P-Nitrophenol, 2-chloro-4-nitrophenol, and 4-methylumbelliferone, and Their Use as Substrates for Determining Alpha-Glucosidase Activity]

Ia V Voznyĭ, I S Lukomskaia, I M Lanskaia, E I Podkidysheva

Vopr Med Khim. Oct-Dec 1996;42(4):348-54.

PMID: 9254525

Abstract:

Synthesis of beta-maltosides, p-nitrophenyl-beta-D-maltoside and 4-methylumbelliferyl-beta-D-maltoside, based on interaction of hepta-acetate-beta-D-maltosyl fluoride with the corresponding trimethylsilyl ethers of p-nitrophenol and 4-methylumbelliferone is described. 2-Chloro-4-nitrophenyl-beta-D-maltoside was synthesized by interaction of hepta-acetate-alpha-D-maltosyl bromide with 2-chloro-4-nitrophenol in two phase system using phase transfer catalyst. The method of assay of neutral alpha-glucosidase from human kidney and urine using synthesized beta-maltosides (p-nitrophenyl-beta-D-maltoside, 2-chloro-4-nitrophenyl-beta-D-maltoside and 4-methylumbelliferyl-beta-D-maltoside) as substrates and beta-glucosidase as an auxiliary enzyme is proposed. The method is simple, convenient and 10-fold more sensitive than the commonly used alpha-glucosidase assay procedure with the corresponding synthetic alpha-glucosides, p-nitrophenyl-alpha-D-glucoside and 4-methylumbelliferyl-alpha-D-glucoside. A modification of the method, with p-nitrophenyl-beta-D-maltoside as substrate, was applied to the semi-automatic assay of urinary alpha-glucosidase in 96-well microtitre plates.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP56846390	4-Nitrophenyl β-D-maltoside		56846-39-0	Price

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