Abstract

AbstractAn α‐carbonyl radical cyclization approach towards the synthesis of angularly fused tricyclic systems is described. On reduction with tributyltin hydride, bromo ketones yield a α‐carbonyl radical that undergoes successive 5‐exo‐dig/trig cyclizations, resulting in two or four contiguous stereocenters. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2008)

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