N-(N-tert-butoxycarbonyl-L-leucyl)-L-leucine ethyl ester

Alloc-L-leucine

N-phenylmethanesulfonyl-L-leucyl chloride

N-(N-allyloxycarbonyl-L-leucyl)-L-leucine-(N'-phenyl-hydrazide)

Benzolsulfonyl-L-leucyl-L-leucin-aethylester