Synthese von 4′‐Azido‐3′,5′‐ditritio‐L‐phenylalanin‐peptiden als « Photo‐affinitätsproben » für Ligand‐Rezeptor‐Wechselwirkungen. Vorläufige Mitteilung

The Synthesis of 4′‐Azido‐3′,5′‐ditrito‐ L ‐phenylalanine Peptides as « Photoaffinity Probes » for Ligand‐Receptor Interaction The synthesis of L ‐ p ‐azido‐phenylalanine and peptides thereof containing tritium atoms in the m , m ′‐positions of the phenyl ring is described. Starting materials are L ‐ p ‐amino‐phenylalanine and L ‐ p ‐amino‐ m , m ′‐diiodo‐phenylalanine. Such peptides are being used for specific photoaffinity labelling of receptor and enzyme molecules.