6,6-DiMethyl-3-azabicyclo[3.1.0]hexane

(S)-2-amino-3-((S)-2-oxopyrrolidin-3-yl)propanamide HCL

Methyl (S)-2-(Boc-amino)-3-[(S)-2-oxo-3-pyrrolidinyl]propanoate

(R)-N-Boc-glutamic acid-1,5-dimethyl ester

L-Glutamic acid dimethyl ester hydrochloride

N-Boc-L-tert-Leucine

(1R,2S,5S)-6,6-dimethyl-3-azabicyclo[3.1.0]hexane-2-carboxylic acid

Caronic anhydride

(S)-3,3-dimethyl-2-(2,2,2-trifluoroacetamido)butanoic acid