%A P Wipf %A J Xiao %J Organic Letters %T Convergent approach to (E)-alkene and cyclopropane peptide isosteres %X (Chemical Equation Presented) Trisubstituted (E)-alkene isosteres (TEADIs) and novel cyclopropane amide bond isosteres (CPDIs) were synthesized by aldimine addition and three-component aldimine addition-cyclopropanation methodologies, respectively. These new peptide mimetics can serve as ?-turn promoters. %N 1 %P 103 - 106 %V 7 %D 2005 %R 10.1021/ol0477529 %L pittir20408