2-(4-Nitrophenoxycarbonyl)amino-5-phenylthiazole 、 N-(5-phenylthiazol-2-yl)-N'-[4-(pyrrolidinocarbonylmethyl)piperazin-1-yl]-urea 以117 mg (0.59 mmol) of 1-(pyrrolidinocarbonylmethyl)piperazine was obtained 12 as an amorphous white powder after lyophilization的产率得到1-(吡咯烷基羰基甲基)哌嗪