上游原料
1,4-bis(bromomethyl)benzene1-[(2R,4S,5S)-4-azido-5-(hydroxymethyl)tetrahydro-2-furanyl]-5-methyl-2,4(1H,3H)-pyrimidinedione1,4,8,11-Tetraazacyclotetradecanetri(tert-butyl) 1,4,8,11-tetraazacyclotetradecane-1,4,8-tricarboxylatedi(tert-butyl) 1,4,8,11-tetraazacyclotetradecane-1,4-dicarboxylatedi(tert-butyl) 1,4,8,11-tetraazacyclotetradecane-1,8-dicarboxylatedi(tert-butyl) 1,4,8,11-tetraazacyclotetradecane-1,11-dicarboxylatedi(tert-butyl) 4-(5-ethoxy-5-oxopentyl)-1,4,8,11-tetraazacyclotetradecane-1,11-dicarboxylatedi(tert-butyl) 4-(5-ethoxy-5-oxopentyl)-1,4,8,11-tetraazacyclotetradecane-1,8-dicarboxylatedi(tert-butyl) 8-(5-ethoxy-5-oxopentyl)-1,4,8,11-tetraazacyclotetradecane-1,4-dicarboxylatedi(tert-butyl) 4,8-bis(5-ethoxy-5-oxopentyl)-1,4,8,11-tetraazacyclotetradecane-1,11-dicarboxylatedi(tert-butyl) 4,11-bis(5-ethoxy-5-oxopentyl)-1,4,8,11-tetraazacyclotetradecane-1,8-dicarboxylatedi(tert-butyl) 8,11-bis(5-ethoxy-5-oxopentyl)-1,4,8,11-tetraazacyclotetradecane-1,4-dicarboxylatetri(tert-butyl) 11-(4-[[4,8-bis(tert-butoxycarbonyl)-11-(5-ethoxy-5-oxopentyl)-1,4,8,11-tetraazacyclotetradecan-1-yl]methyl]benzyl)-1,4,8,11-tetraazacyclotetradecane-1,4,8-tricarboxylate5-[4,8-bis(tert-butoxycarbonyl)-11-(4-[[4,8,11-tris(tert-butoxycarbonyl)-1,4,8,11-tetraazacyclotetradecan-1-yl]methyl]benzyl)-1,4,8,11-tetraazacyclotetradecan-1-yl]pentanoic acid
