5-(3-methanesulfonyloxy-propyl)-3-methyl-1H-pyrrole-2,4-dicarboxylic acid 2-tert-butyl ester 4-ethyl ester 、
1-(2-氨乙基)哌啶 、
乙酸乙酯 在
水 、 Brine 、 silica gel 、
3-methyl-5-[3-(2-piperidin-1-yl-ethylamino)-propyl]-1H-pyrrole-2,4-dicarboxylic acid 2-tert-butyl ester 4-ethyl ester 作用下,
以
甲醇 为溶剂,
反应 16.0h,
以to obtain the title compound 3-methyl-5-[3-(2-piperidin-1-yl-ethylamino)-propyl]-1H-pyrrole-2,4-dicarboxylic acid 2-tert-butyl ester 4-ethyl ester 32a (5.35 g, yield 46.5%) as a yellow oil的产率得到3-methyl-5-[3-(2-piperidin-1-yl-ethylamino)-propyl]-1H-pyrrole-2,4-dicarboxylic acid 2-tert-butyl ester 4-ethyl ester