(2R,3R,4R,5R,6R)-2-(4-(5-bromo-6-methylpyridin-2-yl)-2-methylphenyl)-6-((pivaloyloxy)methyl)tetrahydro-2H-pyran-3,4,5-triyl tris(2,2-dimethylpropanoate) 、 (2R,3R,4R,5R,6R)-2-(2-methyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)-6-((pivaloyloxy)methyl)tetrahydro-2H-pyran-3,4,5-triyltris(2,2-dimethylpropanoate) 在
caesium carbonate 作用下,
以
乙腈 为溶剂,
反应 0.5h,
生成
[(2R,3R,4R,5R,6R)-3,4,5-tris(2,2-dimethylpropanoyloxy)-6-[2-methyl-4-[2-methyl-6-[3-methyl-4-[(2R,3R,4R,5R,6R)-3,4,5-tris(2,2-dimethylpropanoyloxy)-6-(2,2-dimethylpropanoyloxymethyl)oxan-2-yl]phenyl]pyridin-3-yl]phenyl]oxan-2-yl]methyl 2,2-dimethylpropanoate