Synthetic Study of Diversifolin: The Construction of 11-Oxabicyclo[6.2.1]undec-3-ene Core Using Ring-Closing Metathesis
作者:Tomoaki Nakamura、Motoko Oshida、Tomoko Nomura、Atsuo Nakazaki、Susumu Kobayashi
DOI:10.1021/ol7025119
日期:2007.12.1
Stereoselective synthesis of a potential intermediate bearing 11-oxabicyclo[6.2.1]undec-3-ene core, a common scaffold of biologically active germacrane-type sesquiterpenes, has been achieved. Synthetic features involve formal 1,3-asymmetric induction, unusual ring-closing metathesis constructing a 10-membered carbocycle system, and unique lactone transposition.
已经实现了立体选择性合成的潜在中间体,该中间体带有11-氧杂双环[6.2.1]十一碳-3-烯核,这是一种具有生物活性的ac草型倍半萜的常见骨架。合成特征涉及正式的1,3-不对称诱导,构建10元碳环系统的不寻常的闭环复分解反应以及独特的内酯转座。