ethyl 4-(2-bromo-4-fluorophenyl)-6-(((S)-3-(hydroxymethyl)morpholino)methyl)-2-(thiazol-2-yl)-1,4-dihydropyrimidine-5-carboxylate 、
BOC-L-2-氨基丁酸 以to give the title compound as yellow oil (0.37 g, 31%)的产率得到ethyl 6-(((R)-3-((((S)-2-aminobutanoyl)oxy)methyl)morpholino)methyl)-4-(2-bromo-4-fluorophenyl)-2-(thiazol-2-yl)-1,4-dihydropyrimidine-5-carboxylate