Identification and Isolation of a Receptor for N‐Methyl Alkylammonium Salts: Molecular Amplification in a Pseudo‐peptide Dynamic Combinatorial Library

: A cyclic pseudo-peptide receptor for acetylcholine has been amplified and isolated from a dynamic combinatorial library by virtue of templated stabilization under thermodynamic control (see scheme, TFA=trifluoroacetic acid). This is a demonstration of significant molecular amplification in dynamic systems to evolve a novel receptor.