tert-butyl 4-[4-{[(2R)-4-methoxy-2-methyl-4-oxobutanoyl]amino}-6-(pyrazin-2-ylamino)-2,4'-bipyridin-2'-yl]piperazine-1-carboxylate 在
水 、 sodium hydroxide 作用下,
以
乙醇 为溶剂,
以94%的产率得到(3R)-4-{[2'-[4-(tert-butoxycarbonyl)piperazin-1-yl]-6-(pyrazin-2-ylamino)-2,4'-bipyridin-4-yl]amino}-3-methyl-4-oxobutanoic acid sodium salt