1-benzyl-3-({(2S)-2-[(tert-butoxycarbonyl)amino]propyl}oxy)-4-methyl-1H-pyrazole-5-carboxylic acid 、
4-氨基间苯二酚 盐酸盐 以in the same manner as in Example 2, step C, the title compound was obtained的产率得到tert-butyl [ (1S)-2-({1-benzyl-5-[(2,4-dihydroxyphenyl)carbamoyl]-4-methyl-1H-pyrazol-3-yl}oxy)-1-methylethyl]carbamate