作者:Peter Wipf、Corey R. J. Stephenson、Maciej A. A. Walczak
DOI:10.1021/ol0487783
日期:2004.8.1
provides a rapid access to omega-unsaturated dicyclopropylmethylamines. These novel building blocks are converted into heterocyclic 5-azaspiro[2.4]heptanes, 5-azaspiro-[2.5]octanes, and 5-azaspiro[2.6]nonanes by means of selective ring-closing metathesis, epoxide opening, or reductive amination. The resulting functionalized pyrrolidines, piperidines, and azepines are scaffolds of considerable relevance
N-二苯基膦基嘧啶,炔烃,盐酸茂锆和二碘甲烷的多组分缩合反应可快速获得ω-不饱和二环丙基甲基胺。通过选择性的闭环复分解,环氧化物开环或还原胺化,将这些新颖的结构单元转化为杂环的5-氮杂螺[2.4]庚烷,5-氮杂螺-[2.5]辛烷和5-氮杂螺[2.6]壬烷。所得的官能化的吡咯烷,哌啶和氮杂环庚烷是与化学驱动的药物发现具有重大相关性的支架。