Synthesis of (S)- and (R)-enantiomers of p-(4-hydroxybenzoyl)phenylalanine, useful photoaffinity labeling probes for peptide–protein binding sites

Stereo-controlled synthesis of novel photoreactive gamma-secretase inhibitors

The stereoselective synthesis of novel photoreactive gamma-secretase inhibitors 2 and 3 has been achieved. Key steps of the strategy involve preparation of alpha-N-Boc-epoxide 8 and formation of lactone 14 in a practical and stereo-controlled fashion. Compounds 2 and 3 are potent gamma-secretase inhibitors and directly interact with presenilin-1, a catalytic subunit of gamma-secretase.

A concise synthesis of photoactivatable 4-aroyl-L-phenylalanines

An efficient preparation of the title compounds from 4-iodo-L-phenylalanines using a carbonylative Stille cross-coupling reaction as the key-step is described.