4,5-dihydrothiazol-2-yl 2,3,4-tri-O-benzoyl-6-O-(2,3,4,6-tetra-O-benzyl-D-glucopyranosyl)-1-thio-β-D-glucopyranoside 、
ethyl 2,3,4-tri-O-benzoyl-1-thio-β-D-glucopyranoside 在
3 A molecular sieve 、
silver trifluoromethanesulfonate 作用下,
以
1,2-二氯乙烷 为溶剂,
以93%的产率得到ethyl O-(2,3,4,6-tetra-O-benzyl-α-D-glucopyranosyl)-(1->6)-O-(2,3,4-tri-O-benzoyl-β-D-glucopyranosyl)-(1->6)-2,3,4-tri-O-benzoyl-1-thio-β-D-glucopyranoside