2-Chloro-4-(thien-2'-yl)pyrimidine (2a) and its thiazol-2'-yl analogue (2d) are
prepared by condensation of 2-chloropyrimidine with thien-2-yl- and
thiazol-2-yl-lithium, followed by oxidation of the dihydro
intermediates. 4-Chloro-6-methyl-2-(thien-2'-yl)pyrimidine (3b),its
2-(2',4'-dimethylthiazol-5'-yl) analogue (3f) and the
2-(2'-methylthiazol-4'-yl) analogue (4b) are made from the corresponding pyrimidinones, which are available by primary synthesis.
Each chloro compound is converted by nucleophilic displacement into its β-dimethylaminoethylamino
and β-dimethylaminoethylthio
derivatives, for which activities as amplifiers of phleomycin are reported and
discussed.
2-氯-4-(噻吩-2'-基)嘧啶(2a)及其噻唑-2'-基类似物(2d)的制备方法是
通过 2-氯嘧啶与噻吩-2'-基和噻唑-2'-基锂缩合,然后通过噻唑-2'-基类似物
噻唑-2'-基锂缩合,然后氧化二氢
中间体。4-氯-6-甲基-2-(噻吩-2'-基)嘧啶 (3b)、其
2-(2',4'-二甲基噻唑-5'-基)类似物(3f)和
2-(2'-甲基噻唑-4'-基)类似物(4b)由相应的嘧啶酮类化合物制成,这些化合物可通过初级合成获得。
每个氯代化合物通过亲核置换转化为其 β-二甲基氨基乙基氨基
和 β-二甲氨基乙硫基
衍生物,并报告和讨论了这些衍生物作为新霉素扩增剂的活性。
讨论。