上游原料
2-Pyridinamine; 2-Pyridinylamine; 2-Aminopyridine2-ethoxy-N-hydroxy-2-oxoethanimidoyl chloride(2S,4S)-1-[(benzyloxy)carbonyl]-4-hydroxy-2-pyrrolidinecarboxylic acidbenzyl (2S,4S)-2-([[tert-butyl(dimethyl)silyl]oxy]methyl)-4-hydroxy-1-pyrrolidinecarboxylatebenzyl (2S)-2-([[tert-butyl(dimethyl)silyl]oxy]methyl)-4-oxo-1-pyrrolidinecarboxylatebenzyl (2S)-2-([[tert-butyl(dimethyl)silyl]oxy]methyl)-4-methylene-1-pyrrolidinecarboxylate7-benzyl 3-ethyl 8-([[tert-butyl(dimethyl)silyl]oxy]methyl)-1-oxa-2,7-diazaspiro[4.4]non-2-ene-3,7-dicarboxylate7-benzyl 3-ethyl 8-formyl-1-oxa-2,7-diazaspiro[4.4]non-2-ene-3,7-dicarboxylate7-benzyl 3-ethyl 8-[(2-pyridinylamino)methyl]-1-oxa-2,7-diazaspiro[4.4]non-2-ene-3,7-dicarboxylate7-benzyl 3-ethyl 8-[[(tert-butoxycarbonyl)(2-pyridinyl)amino]methyl]-1-oxa-2,7-diazaspiro[4.4]non-2-ene-3,7-dicarboxylate7-benzyl 3-ethyl 8-[[(tert-butoxycarbonyl)(2-pyridinyl)amino]methyl]-1-oxa-2,7-diazaspiro[4.4]non-2-ene-3,7-dicarboxylate7-[(benzyloxy)carbonyl]-8-[[(tert-butoxycarbonyl)(2-pyridinyl)amino]methyl]-1-oxa-2,7-diazaspiro[4.4]non-2-ene-3-carboxylic acidtert-butyl (2S)-3-amino-2-[(mesitylsulfonyl)amino]propanoatebenzyl 8-[[(tert-butoxycarbonyl)(2-pyridinyl)amino]methyl]-3-[([(2S)-3-(tert-butoxy)-2-[(mesitylsulfonyl)amino]-3-oxopropyl]amino)carbonyl]-1-oxa-2,7-diazaspiro[4.4]non-2-ene-7-carboxylate
