3,4,6-tri-O-acetyl-2-deoxy-2-[1-(4,4-dimethyl-2,6-dioxocyclohex-1-ylidene)-ethylamino]-α-D-glucopyranosyl bromide 、
2-氯乙氧基-2-乙氧基二乙醇 在
molecular sieve 、
silver trifluoromethanesulfonate 作用下,
以
1,2-二氯乙烷 为溶剂,
反应 1.0h,
以84%的产率得到(2R,3S,4R,5R)-2-(acetoxymethyl)-6-(2-(2-(2-chloroethoxy)ethoxy)ethoxy)-5-((1-(4,4-dimethyl-2,6-dioxocyclohexylidene)ethyl)amino)tetrahydro-2H-pyran-3,4-diyl diacetate