3-(Boc-Aminomethyl)-3-amino-oxolane (S)-3-Boc-amino-2,6-dioxopiperidine 9-Hydroxy-3-aza-spiro[5.5]undecane-3-carboxylic acid tert-butyl ester 6-Boc-4-chloro-6,7-dihydr... tert-butyl 4-oxa-1,9-diazaspiro[5.5]undecane-9-carboxylate

(R)-3-Boc-amino-2,6-dioxopiperidine Tert-Butyl-5-ethynyl-2,2-dimethyl-1,3-dioxan-5-ylcarbamate tert-butyl 6-formyl-2-azabicyclo[2.2.2]octane-2-carboxylate tert-butyl 7-sulfanyl-5-azaspiro[3.4]octane-5-carboxylate tert-butyl N-[(5-amino-2-methylphenyl)methyl]carbamate

tert-butyl 9-oxo-2,8-diazaspiro[5.5]undecane-2-carboxylate tert-butyl 4-amino-6,12-diazatricyclo[7.2.1.0,2,7]dodeca-2(7), 3,5-triene-12-carboxylate tert-butyl N-(1-imino-4-methyl-1-oxo-1lambda6-thian-4-yl)ca rbamate tert-butyl N-[(1R,3R,4S)-3,4-diaminocyclopentyl]carbamate tert-butyl 6-amino-4-azaspiro[2.5]octane-4-carboxylate hydrochloride

tert-butyl 5-amino-2,3,4,5-tetrahydro-1H-1-benzazepine-1-ca rboxylate tert-butyl N-[(1-carbamothioylcyclopropyl)methyl]carbamat e tert-butyl N-(5-formyl-1-methyl-1H-pyrazol-3-yl)carbamate