A Concise Organocatalytic Synthesis of 3-Deoxy-2-ulosonic Acids throughCinchona-Alkaloid-Promoted Aldol Reactions of Pyruvate

Pathways and their usage in the conversion of carbohydrates by aqueous barium hydroxide: insights from hyperpolarized and quantitative NMR

Elusive intermediates and products were visualized in the conversion of glucose in aqueous barium hydroxide. Competing pathways resembling different biochemical glycolysis pathways were observed in this manner.

Total synthesis of pipecolic acid and 1-C-alkyl 1,5-iminopentitol derivatives by way of stereoselective aldol reactions from (S)-isoserinal

A short synthesis of iminosugars and pipecolic acid derivatives has been realized through aldol addition of a pyruvate, a range of ketones and (S)-isoserinal, followed by catalytic reductive intramolecular amination. The stereoselective aldol reaction was achieved successfully by using tertiary amines or di-zinc aldol catalysts, thus constituting two parallel routes to optically pure products with good yields and high diastereoselectivities. These carbohydrate analogues may be the inhibitors of potent glycosidases and glycosyltransferases.

Catalytic enantioselective aldol reactions

Recent developments in catalytic asymmetric aldol reactions have been summarized.