https://pmc.ncbi.nlm.nih.gov/articles/PMC21759/
Aminophosphinic inhibitors as transition state analogues of enkephalin-degrading enzymes: A class...
Inhibition of aminopeptidase N and neutral endopeptidase-24.11, two zinc metallopeptidases involved in the inactivation of the opioid peptides enkephalins,...
transition state analogues