作者:M. E. Krafft、Y. Y. Cheung、K. A. Abboud
DOI:10.1021/jo010623a
日期:2001.11.1
been achieved by taking advantage on an intermolecular Pauson-Khand cycloaddition and a ring-closing metathesis as key bond-forming transformations. The approach incorporates the cyclooctane stereogenic center prior to ring formation. Interestingly, the ring-closing metathesis generates a new eight-membered ring with an "in-out" intrabridgehead relationship.
通过利用分子间的Pauson-Khand环加成法和闭环易位作为关键的键形成转化,可以实现阿斯替考奈酯(1)的全合成。该方法在环形成之前并入了环辛烷立体生成中心。有趣的是,闭环易位生成了一个新的八元环,具有“进出”桥内关系。