DISCRIMINATION PROPERTIES OF TETRAAMIDIC BRANCHED SELECTORS

A new class of tetraamidic selectors with arms derived from L-phenylal anine and spaced by a phenolic template was synthesized. These chiral compounds were used as stationary phases for analytical gas chromatogr aphic resolution of racemic mixtures of volatile amino acid derivative s; H-1 NMR titration experiments were also performed. The experimental gas chromatographic and H-1 NMR data collected support the hypothesis of a cooperation of the two chiral arms in binding and recognition of amino acidic substrates. (C) 1998 Elsevier Science B.V.