Access to Functionalized Steroid Side Chains via Modified Julia Olefination
作者:Enver Cagri Izgu、Aaron C. Burns、Thomas R. Hoye
DOI:10.1021/ol102936z
日期:2011.2.18
Various functionalizedsteroidalsidechains were conveniently accessed by a modified Julia olefination strategy using a common sulfone donor and an appropriate α-branched aldehyde acceptor. For the coupling of these hindered classes of reaction partners (and in contrast to typically observed trends), the benzothiazolyl(BT)-sulfone anion gave superior outcomes compared to the phenyltetrazolyl(PT)-sulfone
使用常见的砜供体和合适的α-支化醛受体,通过改进的 Julia 烯化策略可以方便地获得各种功能化的甾体侧链。对于这些受阻类别的反应伙伴的偶联(并且与通常观察到的趋势相反),与苯基四唑基 (PT)-砜阴离子相比,苯并噻唑基 (BT)-砜阴离子具有更好的结果。