jo016236i_si_001.pdf (43.8 MB)
Download fileA Solid-Phase Synthetic Route to Unnatural Amino Acids with Diverse Side-Chain Substitutions
journal contribution
posted on 03.04.2002, 00:00 authored by William L. Scott, Martin J. O'Donnell, Francisca Delgado, Jordi AlsinaReacting imine derivatives of resin-bound amino acids with α,ω-dihaloalkanes provides highly
versatile intermediates to racemic α,α-disubstituted amino acids with a wide variety of side-chain
functionality. Two strategies were developed to convert the intermediate ω-chloro or ω-bromo
derivatives to the desired products. Together, they allow the creation of amino acids with diverse
functionalities (ω-chlorides, nitriles, azides, acetates, thioacetates, thioethers, secondary and tertiary
aliphatic amines, and anilines) placed at varying chain lengths (2−5) from the α-center of the amino
acid.