上游原料
ethyl p-hydroxybenzoate; ethyl 4-hydroxybenzoate(2R)-2-[(tert-butoxycarbonyl)amino]-3-phenylpropionic acidethyl 4-ethoxybenzoateethyl 4-ethoxycyclohexanecarboxylateethyl 1-[(benzyloxy)methyl]-4-ethoxycyclohexanecarboxylate1-[(benzyloxy)methyl]-4-ethoxycyclohexanecarboxylic acidtert-butyl (1S)-1-benzyl-2-oxo-2-(3-pyridinylamino)ethylcarbamate(2S)-2-amino-3-phenyl-N-(3-pyridinyl)propanamideN-[(1S)-1-benzyl-2-oxo-2-(3-pyridinylamino)ethyl]-1-[(benzyloxy)methyl]-4-ethoxycyclohexanecarboxamideN-[(1S)-1-benzyl-2-oxo-2-(3-pyridinylamino)ethyl]-4-ethoxy-1-(hydroxymethyl)cyclohexanecarboxamideN-[(1S)-1-benzyl-2-oxo-2-(3-pyridinylamino)ethyl]-4-ethoxy-1-(hydroxymethyl)cyclohexanecarboxamide[1-([[(1S)-1-benzyl-2-oxo-2-(3-pyridinylamino)ethyl]amino]carbonyl)-4-ethoxycyclohexyl]methyl methanesulfonateS-[[1-([[(1S)-1-benzyl-2-oxo-2-(3-pyridinylamino)ethyl]amino]carbonyl)-4-ethoxycyclohexyl]methyl] ethanethioate