Studies toward the total synthesis of armatol F: stereoselective construction of the C6 and C7 stereocenters and formation of the A-ring skeleton
作者:Kenshu Fujiwara、Yuta Hirose、Daisuke Sato、Hidetoshi Kawai、Takanori Suzuki
DOI:10.1016/j.tetlet.2010.06.026
日期:2010.8
Armatol F, isolated from the red alga Chondria armata as a polyether triterpene, has a solitary oxepane (A-ring) and a fused tricyclic ether moiety (BCD-ring). The A-ring features a rare cis-relationship between the hydroxy group at the quaternary carbon C6 and the carbon chain at C7. As part of our program toward the total synthesis of armatol F, a new stereoselective method for the construction of
从红藻软骨藻中分离出来的作为聚醚三萜的Armatol F具有孤立的环氧庚烷(A环)和稠合的三环醚部分(BCD环)。A环的特征是在季碳C6的羟基和C7的碳链之间罕见的顺式关系。作为我们对armatol F进行全合成的计划的一部分,基于手性传递的Ireland-Claisen重排,开发了一种用于构建C6和C7立体中心的新的立体选择性方法。还通过包括闭环烯烃复分解的方法由重排产物合成了A-环骨架。