Stereoselective Synthesis of <i>cis</i>-1,3-Disubstituted Cyclobutyl Kinase Inhibitors
作者:Christopher J. Helal、Zhijun Kang、John C. Lucas、Brooks R. Bohall
DOI:10.1021/ol049416y
日期:2004.5.1
novel kinase inhibitors containing a cis-1,3-disubstituted cyclobutane are described. The first route utilized addition of 3-aminocyclobutanol to 1,4-dinitroimidazole 5 as the crucial step in preparing 1, whereas the second route employed a novel 1,4-addition of 4-nitroimidazole 18 to in situ generated cyclobutenone 17 as the key reaction. This allowed for a stereoselective and shorter synthesis that
描述了两种合成途径来制备一系列包含顺式-1,3-二取代的环丁烷的结构新颖的激酶抑制剂。第一种方法是将3-氨基环丁醇添加到1,4-二硝基咪唑5中,这是制备1的关键步骤,而第二种方法是将4-硝基咪唑18新颖地1,4-添加到原位生成的环丁烯酮17中反应。这样就可以进行立体选择性和较短的合成,从而避免了使用潜在爆炸性的1,4-二硝基咪唑5。