N-α-Fmoc-N-β-alloc-L-diaminopropionic acid
N-α-tert-butoxycarbonyl-N-β-(9-fluorenylmethoxycarbonyl)-L-diaminopropionic acid
(2S)-3-(benzyloxycarbonylamino)-2-(9H-fluoren-9-ylmethoxycarbonylamino)propanoic acid
(S)-(3-fluoren-9-ylmethoxycarbonyl)-4-[(benzyloxycarbonyl)aminomethyl]-5-oxazolidinone