Completely regioselective synthesis of 5- and 6- amino and fluoro-hexofuranoses via cyclic sulphates
摘要:
The nucleophilic opening of new and previously described 5,6- and 3,5-glucohexofuranose cyclic sulphates is a regioselective and efficient way to prepare 6- and 5-azido(amino)- and 6- and 5-fluoro-aldofuranose derivatives (D-gluco and L-ido configurations). (C) 1998 Published by Elsevier Science Ltd. All rights reserved.
Cyclic sulfates in the regioselective synthesis of 5- and 6-amino and 5- and 6-fluorohexofuranoses
摘要:
Cyclic sulfates of 5,6- and 3,5-D-glucofuranose were used to prepare 6- and 5-azido (amino) and 6- and ti-fluoro derivatives of 1,2-O-isopropylidenehexofuranoses (D-gluco and L-ino configurations). The reactions were completely regioselective and, in the case of stereogenic centers (substitution at C-5), completely stereoselective. (C) 1999 Elsevier Science Ltd, All rights reserved.