4-<2-<(S)-1-tert-butyloxycarbonylamino-2-methylpropyl>>-oxazole carboxylic acid

(S)-2-{[2-((S)-1-tert-Butoxycarbonylamino-2-methyl-propyl)-oxazole-4-carbonyl]-amino}-3-(1H-indol-3-yl)-propionic acid methyl ester

3-[2'-((S)-1-tert-Butoxycarbonylamino-2-methyl-propyl)-[2,4']bioxazolyl-5-yl]-indole-1-carboxylic acid methyl ester

2''-[1-(tert-butoxycarbonyl)amino-2-methylpropyl]-4-formylteroxazole

3-(2-{[2-((S)-1-tert-Butoxycarbonylamino-2-methyl-propyl)-oxazole-4-carbonyl]-amino}-acetyl)-indole-1-carboxylic acid methyl ester

((S)-1-{4-[2-(1H-Indol-3-yl)-2-oxo-ethylcarbamoyl]-oxazol-2-yl}-2-methyl-propyl)-carbamic acid tert-butyl ester

2''-[1-(tert-butoxycarbonyl)amino-2-methylpropyl]-4-hydroxymethylteroxazole

2-((S)-1-{[2-((S)-1-tert-Butoxycarbonylamino-2-methyl-propyl)-oxazole-4-carbonyl]-amino}-2-methyl-propyl)-thiazole-4-carboxylic acid ethyl ester

2'-((S)-1-tert-Butoxycarbonylamino-2-methyl-propyl)-5-(1H-indol-3-yl)-[2,4']bioxazolyl-4-carboxylic acid methyl ester

2-((S)-1-{[2-((S)-1-{[(4S,5R)-2-((S)-1-Amino-2-methyl-propyl)-5-methyl-4,5-dihydro-oxazole-4-carbonyl]-amino}-2-methyl-propyl)-oxazole-4-carbonyl]-amino}-2-methyl-propyl)-thiazole-4-carboxylic acid ethyl ester

2-((S)-1-{[2-((S)-1-{[(4S,5R)-2-((S)-1-Benzyloxycarbonylamino-2-methyl-propyl)-5-methyl-4,5-dihydro-oxazole-4-carbonyl]-amino}-2-methyl-propyl)-oxazole-4-carbonyl]-amino}-2-methyl-propyl)-thiazole-4-carboxylic acid ethyl ester

2-((S)-1-(2-((S)-1-amino-2-methylpropyl)oxazole-4-carbonyl)pyrrolidin-2-yl)oxazole-4-carboxamide

2-((S)-1-(2-((S)-1-((tert-butoxycarbonyl)amino)-2-methylpropyl)oxazole-4-carboxamido)-2-methylpropyl)oxazole-4-carboxylic acid

[(S)-1-(4-{2-[4-(2-Benzyloxy-phenyl)-1H-indol-3-yl]-2-oxo-ethylcarbamoyl}-oxazol-2-yl)-2-methyl-propyl]-carbamic acid tert-butyl ester

2-((S)-1-{[2-((S)-1-Benzyloxycarbonylamino-2-methyl-propyl)-oxazole-4-carbonyl]-amino}-2-methyl-propyl)-thiazole-4-carboxylic acid ethyl ester

2-((S)-1-amino-2-(4-hydroxyphenyl)ethyl)-N-((S)-1-(4-carbamoyloxazol-2-yl)-2-methylpropyl)oxazole-4-carboxamide

2-((S)-1-{[2-((S)-1-Benzyloxycarbonylamino-2-methyl-propyl)-oxazole-4-carbonyl]-amino}-2-methyl-propyl)-thiazole-4-carboxylic acid

2-((S)-1-{[2-((S)-1-tert-Butoxycarbonylamino-2-methyl-propyl)-oxazole-4-carbonyl]-amino}-2-methyl-propyl)-thiazole-4-carboxylic acid allyl ester

(4S,5R)-2-((S)-1-{[2-((S)-1-{[2-((S)-1-Benzyloxycarbonylamino-2-methyl-propyl)-oxazole-4-carbonyl]-amino}-2-methyl-propyl)-thiazole-4-carbonyl]-amino}-2-methyl-propyl)-5-methyl-4,5-dihydro-oxazole-4-carboxylic acid methyl ester