(2R,3R,4R,6R)-6-(3-(3-amino-6-bromopicolinamido)pyridin-4-yl)-3-ethyl-3-hydroxy-2-methyltetrahydro-2H-pyran-4-yl acetate 、
1,5-二甲基-1H-吡唑-4-硼酸频哪醇酯 以to give 3-amino-6-(1,5-dimethyl-1H-pyrazol-4-yl)-N-(4-((2R,4R,5S,6R)-5-ethyl-4,5-dihydroxy-6-methyltetrahydro-2H-pyran-2-yl)pyridin-3-yl)picolinamide in 30% yield的产率得到3-amino-6-(1,5-dimethyl-1H-pyrazol-4-yl)-N-(4-((2R,4R,5S,6R)-5-ethyl-4,5-dihydroxy-6-methyltetrahydro-2H-pyran-2-yl)pyridin-3-yl)picolinamide