An easy stereospecific synthesis of 1-amino-2,5-anhydro-1-deoxy-d-mannitol and arylamino derivatives
摘要:
1-Amino-2,5-anhydro-1-deoxy-D-mannitol and a series of arylamino derivatives were prepared by nitrous acid deamination of 2-amino-2-deoxy-D-glucose and subsequent reductive amination of the resulting 2,5-anhydro-D-mannose. Some of these compounds showed an enhanced affinity for the hexose transporter of Trypanosoma brucei as compared to D-fructose. (C) 1999 Elsevier Science Ltd. All rights reserved.
1-Amino-2,5-anhydro-1-deoxy-D-mannitol and a series of arylamino derivatives were prepared by nitrous acid deamination of 2-amino-2-deoxy-D-glucose and subsequent reductive amination of the resulting 2,5-anhydro-D-mannose. Some of these compounds showed an enhanced affinity for the hexose transporter of Trypanosoma brucei as compared to D-fructose. (C) 1999 Elsevier Science Ltd. All rights reserved.
SELECTIVE PHOSPHORYLATION ON PRIMARY ALCOHOLS OF UNPROTECTED POLYOLS
iododibenzyl phosphate and pyridine, of a very reactive pyridinium salt intermediate. This analysis shows that pyridine behaves as a covalent catalyst like DMAP in acylation reactions from acylchloride. Due to its steric hindrance and high reactivity, this species appears to be the efficient selective phosphorylation reagent but leads to dibenzylphosphoric esters. Under mild conditions, the cleavage of benzyl