4-amino-1-(3-methyl-butyl)-1H-pyrrole-2-carboxylic acid (5-carbamimidoyl-pentyl)-amide 、 1-(3-Methyl-butyl)-4-nitro-1H-pyrrole-2-carboxylic acid (5-carbamimidoyl-pentyl)-amide hydrochloride 、
2,5-dimethylterephthalic acid dipentafluorophenylester 以46%的产率得到N,N'-Bis-[5-(4-carbamimidoyl-butylcarbamoyl)-1-(3-methyl-butyl)-1H-pyrrol-3-yl]-2,5-dimethyl-terephthalamide