名称:
Synthesis of compounds related to antitumor agents. III. On the additions of acyl halide, dialkyl acetylenedicarboxylate and N-substituted maleimides to 2,4-diamino-5-hydroxy-6-methylpyrimidine.
摘要:
2, 4-二氨基-5-羟基-6-甲基嘧啶(I)与酰基卤反应,得到嘧啶并[5, 4-b] [1, 4]恶嗪-6(8H)-酮(IIIa, b)。将乙炔二甲酸二烷基酯与I加成,得到烷氧基羰基亚甲基-嘧啶基[5, 4-b] [1, 4]恶嗪(VI, VII)。从构建哒嗪或呋喃环的证据来看,该化合物的构型被认为是顺式的。类似地,使用马来酰亚胺,获得加合物(XIV)并将其转化为嘧啶并[5, 4-b] [1, 4]恶嗪(XV, XXIa-f)。