Aldose

About: Aldose is a research topic. Over the lifetime, 1270 publications have been published within this topic receiving 27197 citations. The topic is also known as: aldoses.

Aldose production by degradation of sugar acid

Abstract: Process for producing an aldose or aldose derivative containing n carbon atoms comprises: (a) contacting an aqueous solution of a sugar acid having n+1 carbon atoms and containing at least one alpha -hydroxy acid unit, or a salt thereof, with hydrogen peroxide in the presence of a copper salt; (b) separating precipitated copper; (c) regenerating the copper salt with the corresponding acid; and (d) recycling the regenerated salt. The aqueous solution contains 1-60 wt.% of the sugar acid. The Cu salt is used in an amount of 0.01-50% based on the sugar acid. The H2O2 has a concentration of 35-70% and is used in an amount of 1-500 mole% based on the sugar acid. The reaction is effected at 0-100 deg C, especially 15-40 deg C, and pH 5-9, especially 6-8. The sugar acid is arabinonic acid, optionally in Na or Ca salt form. The copper salt is CuSO4 and is regenerated with H2SO4.

Efficient Synthesis of Cord Factor Analogs Through Tributylstannylation

Abstract: Cord factor analogs were regioselectively synthesized by reactions of unprotected α, α-D-trehalose with long-chain acyl chlorides through tributylstannylation in good yields.

Kinetic benzylidenation. Part I. The selective formation of five-membered ring benzylidene acetals from aldose diethyl dithioacetals

Abstract: Reaction of D-arabinose diethyl dithioacetal with one equivalent of benzaldehyde dimethyl acetal in the presence of p-toluenesulfonic acid at −40 °C gave a mixture of the two epimers of 5-O-methoxy...