乙酸酐 、
(1S,5S,7R,8S,1''R)-3-(5a'-carba-α-D-glucopyranosylamino)-7-(1'',2''-dihydroxyethyl)-2,6-dioxa-4-azabicyclo<3.3.0>oct-3-en-8-ol 以
吡啶 为溶剂,
以89.8%的产率得到(1S,5S,7R,8S,1''R)-8-acetoxy-4-N-acetyl-7-(1'',2''-diacetoxyethyl)-3-(2',3',4',6'-tetra-O-acetyl-5a'-carba-α-D-glucopyranosylimino)-2,6-dioxa-4-azabicyclo<3.3.0>octane