Discrimination Between Diastereoisomeric Dipeptides by IR–UV Double Resonance Spectroscopy and Ab Initio Calculations

Abstract

We studied diastereoisomeric dipeptides, containing two chiral centers, by comparing ab initio calculations with laser desorption jet-cooling experiments. We studied the hetero-dipeptides LL–VF (L-Val-L-Phe) and DL–VF and the homo-dipeptides LL–FF (L-Phe-L-Phe) and LD–FF. Changing one of the chiral centers in each molecule leads to changes in the spectra… (More)

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