(3-Ethoxy-4-methoxyphenyl)hydrazine

(9H-fluoren-9-yl)methyl N-[(3S,3aR,6S,6aR)-6-{[(benzyloxy)carbonyl]amino}-hexahydrofuro[3,2-b]furan-3-yl]carbamate

2-{[(benzyloxy)carbonyl](1-{[(9H-fluoren-9-yl)methoxy]carbonyl}pyrrolidin-3-yl)amino}acetic acid

rac-(9H-fluoren-9-yl)methyl (3R,5S)-3-{[(benzyloxy)carbonyl]amino}-5-fluoropiperidine-1-carboxylate

4-{[(benzyloxy)carbonyl]amino}-3-({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)butanoic acid

(9H-fluoren-9-yl)methyl (2R,4R)-4-hydroxy-2-[(2,2,2-trifluoroacetamido)methyl]pyrrolidine-1-carboxylate

rac-(9H-fluoren-9-yl)methyl (3R,5S)-3-{[(tert-butoxy)carbonyl]amino}-5-fluoropiperidine-1-carboxylate

(9H-fluoren-9-yl)methyl (2R,4R)-4-hydroxy-2-({[(prop-2-en-1-yloxy)carbonyl]amino}methyl)pyrrolidine-1-carboxylate

(9H-fluoren-9-yl)methyl (2R,4R)-2-(acetamidomethyl)-4-hydroxypyrrolidine-1-carboxylate

rac-benzyl (3R,4R)-3-hydroxy-4-{methyl[(prop-2-en-1-yloxy)carbonyl]amino}pyrrolidine-1-carboxylate

rac-benzyl (3R,4R)-3-hydroxy-4-(N-methylacetamido)pyrrolidine-1-carboxylate