作者:Jingyun Ren、Jian Wang、Rongbiao Tong
DOI:10.1021/acs.orglett.5b00038
日期:2015.2.6
spiroketal attenol A and synthesized previously as a minor product. Herein, we report a new strategy that for the first time led to asymmetric synthesis of (+)-attenol B as an exclusive product, featuring sequential Achmatowicz rearrangement/bicycloketalization to efficiently construct the 6,8-dioxabicyclo[3.2.1]octane core. In addition, (−)-attenol A was obtained with 91% yield by isomerization of (+)-attenol
分离出具有更高细胞毒性,热力学上较不稳定的(+)-萜烯醇B,将其作为螺旋酮Attenol A的次要异构体,并先前以次要产物的形式进行合成。在本文中,我们报告了一种新策略,该策略首次导致作为专有产品的(+)-Atenol B的不对称合成,其特征是顺序进行Achmatowicz重排/双环缩酮化,以有效地构建6,8-二氧杂双环[3.2.1]辛烷核。另外,( - ) -在CDCl attenol乙-用产率的(+)异构化91%获得attenol甲3。