Diisobutylaluminum hydride-promoted cyclization of silylated 1,3-dien-5-ynes: Application to total synthesis of a 20-norabietane derivative
作者:Hidenori Kinoshita、Kazuki Yaguchi、Takayuki Tohjima、Katsukiyo Miura
DOI:10.1016/j.tetlet.2017.03.022
日期:2017.4
adopted for the synthesis of a natural product containing a 9,10-dihydrophenanthrene skeleton to demonstrate its synthetic utility. One of the extracts from the roots of Salvia hydrangea DC. ex Bentham (Lamiaceae), a 20-norabietane derivative, was selected as the target molecule. The key step forming the 9,10-dihydrophenanthrene skeleton was achieved by the DIBAL-H-promoted cyclization of a silylated
该小组最近开发的由二异丁基氢化铝(DIBAL-H)促进的苯并环化反应被用于合成含有9,10-二氢菲骨架的天然产物,以证明其合成用途。丹参绣球DC的根中的一种提取物。选择一种20-norabietane衍生物ex Bentham(Lamiaceae)作为目标分子。形成9,10-二氢菲骨架的关键步骤是通过DIBAL-H促进的甲硅烷基化的1,3-二烯-5-炔的环化反应而实现的,该环很容易从取代的α-四氢萘酮中获得。