A novel approach towards the stereoselective synthesis of 2-azido-2-deoxy-β-d-mannosides
摘要:
Low temperature mannosylation of glycosyl acceptors under the agency of S-(4-methoxyphenyl) benzenethiosulfinate (MPBT) and trifluoromethanesulfonic anhydride (Tf2O) with p-methoxyphenyl 2-azido-3-O-benzyl-4,6-O-benzylidene-2-deoxy-1-thio-alpha -D-mannopyranoside, readily available from D-mannosamine hydrochloride, affords 2-azido-2-deoxy-D-mannosides with high beta -selectivity in good yields. (C) 2001 Elsevier Science Ltd. All rights reserved.
A novel approach towards the stereoselective synthesis of 2-azido-2-deoxy-β-d-mannosides
摘要:
Low temperature mannosylation of glycosyl acceptors under the agency of S-(4-methoxyphenyl) benzenethiosulfinate (MPBT) and trifluoromethanesulfonic anhydride (Tf2O) with p-methoxyphenyl 2-azido-3-O-benzyl-4,6-O-benzylidene-2-deoxy-1-thio-alpha -D-mannopyranoside, readily available from D-mannosamine hydrochloride, affords 2-azido-2-deoxy-D-mannosides with high beta -selectivity in good yields. (C) 2001 Elsevier Science Ltd. All rights reserved.