5-(3-methanesulfonyloxy-propyl)-3-methyl-1H-pyrrole-2,4-dicarboxylic acid 2-tert-butyl ester 4-ethyl ester 、
乙酸乙酯 、
甲醇 、
1-(2-氨乙基)吡咯烷 在
水 、 Brine 、 silica gel 、
3-methyl-5-[3-(2-pyrrolidin-1-yl-ethylamino)-propyl]-1H-pyrrole-2,4-dicarboxylic acid 2-tert-butyl ester 4-ethyl ester 作用下,
反应 16.0h,
以to obtain the title compound 3-methyl-5-[3-(2-pyrrolidin-1-yl-ethylamino)-propyl]-1H-pyrrole-2,4-dicarboxylic acid 2-tert-butyl ester 4-ethyl ester 28a (4.488 g, yield 63.5%) as a yellow oil的产率得到3-methyl-5-[3-(2-pyrrolidin-1-yl-ethylamino)-propyl]-1H-pyrrole-2,4-dicarboxylic acid 2-tert-butyl ester 4-ethyl ester