A 4 + 3 Cycloaddition Approach to the Synthesis of Spatol. A Formal Total Synthesis of Racemic Spatol
作者:Michael Harmata、Paitoon Rashatasakhon
DOI:10.1021/ol016200c
日期:2001.8.9
[reaction: see text] A formal totalsynthesis of racemic spatol is presented. The key steps involved a 4 + 3cycloaddition of a halogenated cyclopentenyl cation to cyclopentadiene and a quasi-Favorskii rearrangement.
A practical route to both enantiomers of bicyclo[3.3.0]oct-2-en-7-one and their use for the synthesis of key trisubstituted cyclopentanes
作者:David Cousin、John Mann
DOI:10.1016/j.tet.2008.01.134
日期:2008.4
We describe new methodology for the synthesis of both enantiomers of 7,7-dichlorobicyclo[3.2.0]hep-2-en-6-one and conversion of these compounds into stereochemically defined bicyclo[3.3.0]oct-2-en-7-ones and thence trisubstituted cyclopentanes. These are key intermediates for the synthesis of prostanoids, brefeldin and other cyclopentane-containing natural products.