Intramolecular ene reaction on a bicyclo[3.2.1]octane system: an alternative route to (−)-kainic acid
作者:Hideaki Hirasawa、Takahiko Taniguchi、Kunio Ogasawara
DOI:10.1016/s0040-4039(01)01558-1
日期:2001.10
The intramolecular ene reaction of the 1,6-diene on a bicyclo[3.2.1]octane framework proceeds in a highly diastereoselective manner to form a trisubstituted pyrrolidine on the pyran ring in excellent yield. Its stereochemistry has been determined unambiguously by converting it into the known compound serving as a key intermediate of (−)-kainic acid.
1,6-二烯在双环[3.2.1]辛烷骨架上的分子内烯反应以高度非对映选择性的方式进行,从而以优异的产率在吡喃环上形成三取代的吡咯烷。通过将其转化为用作(-)-海藻酸关键中间体的已知化合物,可以明确确定其立体化学。