The synthesis of radiolabeled antihypertensive compound [2,4,6-14C3]-4-chloro-5-(imidazolidin-2-ylidenimino)-6-methoxy-2-methylpyrimidine ([14C3]moxonidine) was accomplished based on condensation of [1-14C]acetamidine with diethyl [1,3-14C2]malonate to form [2,4,6-14C3]-4,6-dihydroxy-2-methylpyrimidine. Subsequent nitration, chlorination, and hydrogenation gave [2,4,6-14C3]-4,6-dichloro-2-methyl-5-aminopyrimidine. The final product was obtained after the coupling of the above aminopyrimidine with 1-acetylimidazolidin-2-one, followed by hydrolysis using sodium methoxide. Copyright © 2004 John Wiley & Sons, Ltd.
放射性标记的抗高血压化合物[2,4,6-14C3]-4-
氯-5-(
咪唑啉-2-亚基亚
氨基)-6-甲氧基-2-
甲基嘧啶([14C3]
莫索尼定)的合成是基于[1-14C]
乙脒与[1、3-14C2]
丙二酸二乙酯缩合生成 [2,4,6-14C3]-
4,6-二羟基-2-
甲基嘧啶。随后进行硝化、
氯化和氢化,得到[2,4,6-14C3]-4,6-二
氯-2-甲基-5-
氨基嘧啶。上述
氨基嘧啶与
1-乙酰基咪唑烷-2-酮偶联后,再用
甲醇钠进行
水解,就得到了最终产物。Copyright © 2004 John Wiley & Sons, Ltd. All Rights Reserved.