methyl (2S,4R)-4-{[(2-{(1R,3R)-1-acetoxy-4-methyl-3-[(N-{[(2R)-1-methylpiperidin-2-yl]carbonyl}-L-isoleucyl)amino]pentyl}-1,3-thiazol-4-yl)carbonyl]amino}-2-methyl-5-phenylpentanoate

4-({2-[1-acetoxy-3-(2-amino-3-methyl-pentanoylamino)-4-methyl-pentyl]-thiazole-4-carbonyl}-amino)-2-methyl-5-phenyl-pentanoic acid methyl ester

(2S,4R)-methyl 4-((tert-butoxycarbonyl)amino)-2-methyl-5-phenylpentanoate

(3R,5R)-tert-butyl 5-benzyl-3-methyl-2-oxopyrrolidine-1-carboxylate

(R)-tert-butyl (2-methylhex-5-en-3-yl)carbamate

(R)-benzyl 2-((2S,3S)-1-((1R,3R)-1-acetoxy-1-(4-((2R,4S)-5-methoxy-4-methyl-5-oxo-1-phenylpentan-2-ylcarbamoyl)thiazol-2-yl)-4-methylpentan-3-ylamino)-3-methyl-1-oxopentan-2-ylcarbamoyl)piperidine-1-carboxylate