benzyl 6-tosyl-6-deoxy-D-mannopyranoside 、
1,4-dideoxy-2,3,5-tri-O-benzyl-1,4-anhydro-4-seleno-D-arabinitol 在
六氟异丙醇 、
potassium carbonate 作用下,
反应 96.0h,
以45%的产率得到benzyl 6-deoxy-6-[2,3,5-tri-O-benzyl-1,4-dideoxy-(R)-epi-seleniumylidene-D-arabinitol]-α-D-mannopyranoside-p-toluenesulfonate