、
phenyl 2,3,6-tri-O-methyl-β-D-glucopyranosyl-[1-4]-2,3,6-tri-O-methyl-β-D-glucopyranosyl-[1-4]-2,3,6-tri-O-methyl-β-D-glucopyranosyl-[1-4]-2,3,6-tri-O-methyl-1-thio-β-D-glucopyranoside 、
phenyl 3-O-benzyl-2,6-di-O-pivaloyl-β-D-glucopyranosyl-[1-4]-2,3,6-tri-O-methyl-β-D-glucopyranosyl-[1-4]-2,3,6-tri-O-methyl-β-D-glucopyranosyl-[1-4]-2,3,6-tri-O-methyl-β-D-glucopyranosyl-[1-4]-2,3,6-tri-O-methyl-1-thio-β-D-glucopyranoside 在
三氟化硼乙醚 active moleculae sieve 4A 作用下,
以
二氯甲烷 为溶剂,
-30.0 ℃
、0.13 Pa
条件下,
反应 14.5h,
以10%的产率得到phenyl 3-O-benzyl-2,6-di-O-pivaloyl-β-D-glucopyranosyl-[1-4]-3-O-benzyl-2,6-di-O-pivaloyl-β-D-glucopyranosyl-[1-4]-2,3,6-tri-O-methyl-β-D-glucopyranosyl-[1-4]-2,3,6,-tri-O-methyl-β-D-glcopyranosyl-[1-4]-2,3,6-tri-methyl-β-D-glucopyranosyl-[1-4]-2,3,6-tri-O-methyl-1-thio-β-D-glucopyranoside