(2R,4S)-1-(tert-butoxycarbonyl)-2-benzyloxycarbonyl-4-(tert-butyldimethylsiloxy)methylpyrrolidine

(2S,5S,8S,11S,13aR)-5-Benzyl-11-[(R)-7-(tert-butyl-diphenyl-silanyloxy)-6-oxo-octyl]-8-ethyl-2,8-dimethyl-decahydro-3a,6,9,12-tetraaza-cyclopentacyclododecene-4,7,10,13-tetraone

(2R,4S)-1-((S)-2-{(S)-2-[(2S,9R)-2-tert-Butoxycarbonylamino-9-(tert-butyl-diphenyl-silanyloxy)-8-oxo-decanoylamino]-2-methyl-butyrylamino}-3-phenyl-propionyl)-4-methyl-pyrrolidine-2-carboxylic acid pentafluorophenyl ester

(2R,4S)-1-(tert-butoxycarbonyl)-2-benzyloxycarbonyl-4-methylpyrrolidine

(2R,4S)-4-Hydroxymethyl-pyrrolidine-1,2-dicarboxylic acid 2-benzyl ester 1-tert-butyl ester