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- W2004248404 abstract "Twenty-three novel 2-chloro-4-nitrophenyl β-d-maltopentaosides modified at the 65 and/or 45 position were synthesized as substrates for human alpha amylase. Two human alpha amylases hydrolyzed 65-deoxy-65-, 65-O-, and 45,65-di-O-substituted derivatives at essentially a single d-glucosidic linkage, but 45,65-O-bridged and 45-O-substituted derivatives were hydrolyzed at two or more linkages. The amylases displayed smaller Km values for the compounds having hydrophobic modifications. In these derivatives, 2-chloro-4-nitrophenyl O-(6-bromo-6-deoxy-α-d-glucopyranosyl)-(1 → 4)-tris[O-α-d-glucopyranosy-(1 → 4)]-β-d-glucopyranoside (10), 2-chloro-4-nitrophenyl O-(6-azido-6-deoxy-α-d-glucopyranosyl)-(1 → 4)-tris[O-α-d-glucopyranosyl-(1 → 4)]-β-d-glucopyranoside (19), and 2-chloro-4-nitrophenyl O-[6-O-(N-isopropyl)carbamoyl-α-d-glucopyranosyl]-(1 → 4)-tris[O-α-d-glucopyranosyl-(1 → 4)]-β-d-glucopyranoside (30), which were rapidly hydrolyzed by the two amylases at a limited position at an approximately equal rate, were shown to be very useful blocked-type substrates for assay of human alpha amylase." @default.
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- W2004248404 title "Syntheses of modified 2-chloro-4-nitrophenyl β-maltopentaosides as useful substrates for assay of human alpha amylase" @default.
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- W2004248404 doi "https://doi.org/10.1016/0008-6215(93)87008-g" @default.
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