作者:Yoshihiro Ishihara、Abraham Mendoza、Phil S. Baran
DOI:10.1016/j.tet.2013.04.028
日期:2013.7
A full account of synthetic efforts toward a lowly oxidized taxane framework is presented. A non-natural taxane, dubbed ‘taxadienone’, was synthesized as our first entry into the taxane family of diterpenes. The final synthetic sequence illustrates a seven-step, gram-scale, and enantioselective route to this tricyclic compound in 18% overall yield. This product was then modified further to give (+)-taxadiene
对低氧化紫杉烷骨架的合成努力进行了全面介绍。一种被称为“紫杉二烯酮”的非天然紫杉烷被合成为我们首次进入二萜紫杉烷家族。最终的合成顺序说明了该三环化合物的七步、克级和对映选择性路线,总产率为 18%。然后将该产物进一步修饰以得到 (+)-紫杉二烯,这是天然产物紫杉烷家族中氧化程度最低的成员。