The first example of a highly stereoselective intramolecular radical cyclisation of a cyclopentenol derivative
作者:Paul R. Jenkins、Andrew J. Wood
DOI:10.1016/s0040-4039(97)00211-6
日期:1997.3
Silyl methylene radicalcyclisation of a β-allylic cyclopentaannulated derivative of glucose leads to a single cis fused tricyclic ring system whereas the same cyclisation of the corresponding α derivative leads to a mixture of cis and trans fused products. These results can be explained by the preference for the formation of the cis fused 5,6-ring system even when this does not involve reaction from