(2008/06/13)
2-tert-butoxycarbonylmethoxy-5-(2-(tert-butoxyoxalyl-amino)-2-{1-[2-carbamoyl-1-(3-naphthalen-1-yl-propylcarbamoyl)-ethylcarbamoyl]-cyclohexylcarbamoyl}-ethyl)-benzoic acid 2-trimethylsilanyl-ethyl ester
carbon dioxide
isobutene
oxalic acid
(S)-methyl 2-((tert-butoxycarbonyl)amino)-3-(4-methoxyphenyl)propanoate