A process is provided for the preparation of a compound of formula (I) or a salt thereof:
wherein R¹ is hydrogen or a C₁₋₄ alkyl, comprising reacting a compound of formula II:
with an agent serving to introduce the alkynyl radical of formula -C≡CR¹ (wherein R¹ is as described above) at the 5-position of the pyrimidine base, the reaction being carried out in the presence of an N₁₋₆ alkylmorpholine, wherein said alkyl moiety being optionally substituted by an alkoxy or halogen group; and optionally thereafter converting into a salt.
提供了一种制备化合物(I)或其盐的方法:其中R¹为氢或C₁₋₄烷基,包括将化合物II与介体反应,该介体用于在
嘧啶碱的5位引入式-C≡CR¹(其中R¹如上所述)的炔基,反应在N₁₋₆烷基
吗啡中进行,其中该烷基可选择地被烷氧基或卤素基取代;随后可选地转化为盐。