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    • 3. 发明授权
    • Methods for the syntheses of alfentanil, sufentanil and remifentanil
    • 合成阿芬太尼,舒芬太尼和瑞芬太尼的方法
    • US07074935B2
    • 2006-07-11
    • US10130324
    • 2000-12-04
    • Jacob MathewJ. Kendall Killgore
    • Jacob MathewJ. Kendall Killgore
    • C07D401/06
    • C07D401/06C07D211/58C07D211/66C07D409/06
    • Synthetic pathways are disclosed for synthesizing derivatives or analogs of fentanyl. Specifically set out are pathways for synthesizing alfentanil, sufentanil and remifentanil. The disclosed methods require fewer steps and produce a greater yield of product than methods reported in the prior art. The pathways to all these compounds begin with a common pathway of condensing a piperidone with a primary amine so as to form a 4-amino carboxyamino-piperidine, wherein N of said piperidone is a —N—COO—(CH2)nCH3, alkylating an N of said primary amine which was condensed with said piperidone thereby producing an N-alkyl-anilide, and hydrolyzing said —COO—(CH2)nCH3? group of said 4-amino-4-carboxyamino-piperidine following the condensation reaction so as to form a piperidine hydrolysis product. This product can then be convened to remifentanil in a 4 step reaction. Also, this hydrolysis product can be treated with a hydride to yield a 4-hydroxymthyl-piperidine which can be converted to alfentanil in 3 further steps, to sufentanil in 3 more steps, or to a variety of remifentanil analogs in two steps.
    • 公开合成途径用于合成芬太尼的衍生物或类似物。 具体列出了合成阿芬太尼,舒芬太尼和瑞芬太尼的途径。 与现有技术中报道的方法相比,所公开的方法需要更少的步骤并产生更高的产率。 所有这些化合物的途径首先是将哌啶酮与伯胺缩合以形成4-氨基羧基氨基 - 哌啶的共同途径,其中所述哌啶酮的N是-N-COO-(CH 2) 烷基化N与所述哌啶酮缩合的所述伯胺,从而制备N-烷基苯胺,并水解所述-COO- (CH 2 3 CH 3 在缩合反应之后的所述4-氨基-4-羧基氨基 - 哌啶基团,以便形成哌啶水解产物。 然后可以在四步反应中将该产物召集到瑞芬太尼。 此外,该水解产物可以用氢化物处理以产生4-羟基甲基哌啶,其可以再三步转化为阿芬太尼,再以3步的方式转化为舒芬太尼,或者在两个步骤中转化为各种瑞芬太尼类似物。