Concise and Diversity-Oriented Route toward Polysubstituted 2-Aminoimidazole Alkaloids and Their Analogues
作者:Denis S. Ermolat'ev、Jitender B. Bariwal、Hans P. L. Steenackers、Sigrid C. J. De Keersmaecker、Erik V. Van der Eycken
DOI:10.1002/anie.201004256
日期:2010.12.3
Alkaloids of the naamine family were synthesized from diverse propargylamines in just two steps (see scheme: R1=Me, R2=substituted benzyl, R3=Ar). Thus, the addition to a propargylamine of a carbodiimide generated in situ, silver(I)‐catalyzed intramolecular hydroamidation, and subsquent deprotection provide access to the heterocyclic core of numerous natural products and biologically active compounds
纳胺家族的生物碱仅需两个步骤就可以由多种炔丙基胺合成(参见方案:R 1 = Me,R 2 =取代的苄基,R 3 = Ar)。因此,除了在炔丙基胺中原位生成的碳二亚胺之外,银(I)催化的分子内加氢酰胺化作用以及随后的脱保护作用也使人们可以接近许多天然产物和生物活性化合物的杂环核。Boc =叔丁氧羰基,Cbz =碳苄氧基。