Introduction of glyco, peptido, carboxy, and alkyno substituents at the calixarene exo rim via the p-bromodienone route

J Org Chem. 2012 Apr 6;77(7):3634-9. doi: 10.1021/jo300107g. Epub 2012 Mar 27.

Abstract

The conceptually novel "p-bromodienone route", which allows the direct introduction of nucleophiles at the calixarene exo rim, has been extended to anionic C-nucleophiles (acetylides) to give chiral meta-substituted alkynocalix[4]arenes and to appropriate O-nucleophiles to obtain para-substituted glyco, peptido, and carboxy derivatives.