Polyhydroxylated N-(thio)carbamoyl piperidines: nojirimycin-type glycomimetics with controlled anomeric configuration
摘要:
N-(Thio)carbamoyl D-xylo-nojirimycin derivatives have been prepared by intramolecular rearrangement of sugar thiourea precursors under basic conditions. The stereochemistry at the aminoketal stereocentre is under stereoelectronic control, with the diastereomer having the pseudoanomeric group in axial orientation being obtained in all cases. (C) 1999 Elsevier Science Ltd. All rights reserved.