6-Amino-5-methyl-4-(4-phenoxy-phenylamino)-pyrrolo[1,2-b]pyridazine-3-carbonitrile hydrochloride 、
tert-butyl 2-(methylthio)-4,5-dihydro-1H-imidazole-1-carboxylate 在
碳酸氢钠 、
Sodium sulfate-III 、
chloroform methanol 作用下,
以
甲醇 、
氯仿 为溶剂,
反应 19.0h,
以TLC to give 424A (22 mg, 97%) as pale yellow flakes (5% MeOH—CHCl3)的产率得到2-[3-cyano-5-methyl-4-(4-phenoxy-phenylamino)-pyrrolo[1,2-b]pyridazin-6-ylamino]-4,5-dihydro-imidazole-1-carboxylic acid tert-butyl ester