(2S)-N-(2-aminopent-4-enoyl)-(1S,2R)-bornane-10,2-sultam

(2R)-N-<(2S)-2-<amino>pent-4-en-1-oyl>bornane-10,2 sultam

Fmoc-L-炔丙基甘氨酸

tert-butyl (2S)-2-[N-(9-phenylfluoren-9-yl)amino]pent-4-enoate