3-(piperazin-1-yl)-1H-pyrazol-5-amine

Tert-butyl 2-{[3-(2-methoxy-2-oxoethyl)-5-sulfanylphenyl]methoxy}acetate

2-(3-{[2-(Tert-butoxy)-2-oxoethoxy]methyl}-5-sulfanylphenyl)acetic acid

2-(3-{[2-(Tert-butoxy)-2-oxoethoxy]methyl}-5-[(fluorosulfonyl)oxy]phenyl)acetic acid

(9H-fluoren-9-yl)methyl 4-({3-azido-5-[(fluorosulfonyl)oxy]-2-methylphenyl}methyl)piperazine-1-carboxylate

benzyl N-(8-hydroxynaphthalen-2-yl)carbamate

tert-butyl 4-{5-ethynyl-3-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]-2-methylphenyl}piperazine-1-carboxylate

tert-butyl 4-{3-ethynyl-5-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]-4-methylphenyl}piperazine-1-carboxylate

tert-butyl 4-{3-ethynyl-5-[({[(9H-fluoren-9-yl)methoxy]carbonyl}amino)methyl]-2-methylphenyl}piperazine-1-carboxylate

(9H-fluoren-9-yl)methyl 4-[(5-{[(tert-butoxy)carbonyl]amino}-3-ethynyl-2-methylphenyl)methyl]piperazine-1-carboxylate

(9H-fluoren-9-yl)methyl 4-{3-azido-5-[(chlorosulfonyl)methyl]-4-methylphenyl}piperazine-1-carboxylate