ethyl 6-{{[6-(chlorocarbonyl)pyridin-2-yl]carbonyl}carbamoyl}pyridine-2-carboxylate 、
ethyl 6-{[(6-carbamoylpyridin-2-yl)carbonyl]carbamoyl}pyridine-2-carboxylate 以
甲苯 为溶剂,
以17 mg的产率得到N-(6-ethoxycarbonylpyridine-2-carbonyl)-6-[[6-[N-(6-ethoxycarbonylpyridine-2-carbonyl)-C-hydroxycarbonimidoyl]pyridine-2-carbonyl]carbamoyl]pyridine-2-carboximidic acid