作者:Tomáš Elbert、Petr Hezký、Petr Jansa
DOI:10.1002/jlcr.3405
日期:2016.12
The radioactively labelled 6-amino-5-nitroso-uracil (1) and 5-acetyl-6-amino-1,3-dimethyl-uracil (2) were required for metabolic studies to assess their suitability as drug candidates. A common precursor for both compounds was [cyano-14 C]cyanoacetic acid (6), readily prepared from potassium [14 C]cyanide. ACS reagents, namely, diethyl ether, acetic acid and acetic anhydride, had to be rigorously repurified
代谢研究需要放射性标记的 6-氨基-5-亚硝基-尿嘧啶 (1) 和 5-乙酰-6-氨基-1,3-二甲基-尿嘧啶 (2),以评估它们作为候选药物的适用性。这两种化合物的共同前体是 [氰基-14 C] 氰基乙酸 (6),很容易从 [14 C] 氰化钾制备。ACS 试剂,即乙醚、乙酸和乙酸酐,必须经过严格的再纯化才能以十分之一毫克的规模成功合成 14 C 标记的化合物。6-氨基-5-亚硝基-[6-14 C]尿嘧啶 (1-14 C) (0.55 mCi) 的放射化学纯度 > 98%,比活度 (SA) = 55.6 mCi/mmol。5-乙酰基-6-氨基-1,3-二甲基-[6-14 C]尿嘧啶 (2-14 C) (8 mCi) 的放射化学纯度 > 97% 和 SA = 55.6 mCi/mmol。