The First Fully Planar C 5 ‐Conformation of Homooligopeptides Prepared from a Chiral α ‐Ethylated α , α ‐Disubstituted Amino Acid: ( S )‐Butylethylglycine (=(2 S )‐2‐Amino‐2‐ethylhexanoic Acid)

Abstract

The First Fully Planar <i>C</i> ₅ ‐Conformation of Homooligopeptides Prepared from a Chiral <i>α</i> ‐Ethylated <i>α</i> , <i>α</i> ‐Disubstituted Amino Acid: ( <i>S</i> )‐Butylethylglycine (=(2 <i>S</i> )‐2‐Amino‐2‐ethylhexanoic Acid)