上游原料
2,5-piperazinedione；2,5-diketopiperazine;cycloglycylglycine；2,5-dioxopiperazine;cyclodiglycine;cyclo(glycylglycyl)1,4-dibenzyl-2,5-piperazinedione1,4-dibenzyl-3,6-dibromo-2,5-piperazinedione1,4-dibenzyl-3,6-bis(benzyloxy)-2,5-piperazinedionemethyl (E)-4-[[tert-butyl(diphenyl)silyl]oxy]-2-butenoatemethyl (3R)-4-[[tert-butyl(diphenyl)silyl]oxy]-3-[(2R,5R)-1,4-dibenzyl-2,5-bis(benzyloxy)-3,6-dioxopiperazinyl]butanoate(3R,6R)-1,4-dibenzyl-3,6-bis(benzyloxy)-3-[(1R)-1-([[tert-butyl(diphenyl)silyl]oxy]methyl)-3-hydroxypropyl]-2,5-piperazinedione(3R,6R)-1,4-dibenzyl-3,6-bis(benzyloxy)-3-[(1R)-3-[[tert-butyl(dimethyl)silyl]oxy]-1-([[tert-butyl(diphenyl)silyl]oxy]methyl)propyl]-2,5-piperazinedione(3R,6R)-1,4-dibenzyl-3-(benzyloxy)-3-[(1R)-3-[[tert-butyl(dimethyl)silyl]oxy]-1-([[tert-butyl(diphenyl)silyl]oxy]methyl)propyl]-6-hydroxy-2,5-piperazinedione(2R,5R)-1,4-dibenzyl-5-(benzyloxy)-5-[(1R)-3-[[tert-butyl(dimethyl)silyl]oxy]-1-([[tert-butyl(diphenyl)silyl]oxy]methyl)propyl]-3,6-dioxopiperazinyl acetate(2R,5R)-1,4-dibenzyl-5-(benzyloxy)-5-[(1R)-1-([[tert-butyl(diphenyl)silyl]oxy]methyl)-3-hydroxypropyl]-3,6-dioxopiperazinyl acetate(1S,6R)-7,9-dibenzyl-6-(benzyloxy)-5-([[tert-butyl(diphenyl)silyl]oxy]methyl)-2-oxa-7,9-diazabicyclo[4.2.2]decane-8,10-dione2,2,4-trimethyl-1,3-dioxolane-4-carbaldehyde(1S,6R)-7,9-dibenzyl-6-(benzyloxy)-5-([[tert-butyl(diphenyl)silyl]oxy]methyl)-1-[(S)-hydroxy[(4S)-2,2,4-trimethyl-1,3-dioxolan-4-yl]methyl]-2-oxa-7,9-diazabicyclo[4.2.2]decane-8,10-dione(1S,6R)-7,9-dibenzyl-6-(benzyloxy)-5-(hydroxymethyl)-1-[(S)-hydroxy[(4S)-2,2,4-trimethyl-1,3-dioxolan-4-yl]methyl]-2-oxa-7,9-diazabicyclo[4.2.2]decane-8,10-dione(1S,6R)-7,9-dibenzyl-6-(benzyloxy)-5-(hydroxymethyl)-1-[(S)-hydroxy[(4S)-2,2,4-trimethyl-1,3-dioxolan-4-yl]methyl]-2-oxa-7,9-diazabicyclo[4.2.2]decane-8,10-dione(1S,6R)-6-hydroxy-5-(hydroxymethyl)-1-[(S)-hydroxy[(4S)-2,2,4-trimethyl-1,3-dioxolan-4-yl]methyl]-2-oxa-7,9-diazabicyclo[4.2.2]decane-8,10-dione(1S,6R)-6-hydroxy-1-[(S)-hydroxy[(4S)-2,2,4-trimethyl-1,3-dioxolan-4-yl]methyl]-5-[(phenylselanyl)methyl]-2-oxa-7,9-diazabicyclo[4.2.2]decane-8,10-dione(1S,6R)-6-hydroxy-1-[(S)-hydroxy[(4S)-2,2,4-trimethyl-1,3-dioxolan-4-yl]methyl]-5-[(phenylseleninyl)methyl]-2-oxa-7,9-diazabicyclo[4.2.2]decane-8,10-dione(1S,6R)-6-hydroxy-1-[(S)-hydroxy[(4S)-2,2,4-trimethyl-1,3-dioxolan-4-yl]methyl]-5-methylene-2-oxa-7,9-diazabicyclo[4.2.2]decane-8,10-dione
