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A new approach to the pancratistatin C-ring from d-glucose: Ferrier rearrangement, pseudoinversion and Pd-catalyzed cyclizations
Journal article   Peer reviewed

A new approach to the pancratistatin C-ring from d-glucose: Ferrier rearrangement, pseudoinversion and Pd-catalyzed cyclizations

Gregory K Friestad and Bruce P Branchaud
Tetrahedron letters, Vol.38(34), pp.5933-5936
1997
DOI: 10.1016/S0040-4039(97)01325-7

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Abstract

A Ferrier rearrangement and β-hydroxyketone transposition are key steps in a route to a pancratistatin C-ring precursor. A key feature of the strategy is the pseudoinversion accomplished by β-hydroxyketone transposition, which allows convenient access from methyl α- d-glucopyranoside. Arylations of the C-ring by intramolecular reductive or non-reductive Pd-catalyzed conjugate addition have been demonstrated, utilizing the C1 hydroxyl to deliver the tethered aryl synthon. Graphic

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