Novel polyhydroxylated derivatives of quinolizidine and decahydropyrido[1,2-a]azepine were prepared starting from a common oxazolidinone. The bicyclic cores were prepared by a ruthenium-catalyzed ring-closing metathesis, followed by re-use of the catalyst in the subsequent syrt-dihydroxylation in a one-pot procedure. (C) 2014 Elsevier Ltd. All rights reserved.