反应详情

EDC (0.77 g, 4.00 mmol) was added to a solution of tert-butyl 1-((4-(4-(3-aminopropoxy)benzoyl)phenyl)amino)-3,6,9,12-tetraoxapentadecan-15-oate (2.00 g, 3.48 mmol), 3-(prop-2-yn-1-yloxy)propanoic acid (0.45 g, 3.48 mmol) and N-hydroxysuccinimide (0.06 g, 0.52 mmol) in DCM (12 mL) at r.t. and the reaction mixture was stirred for 4 hs at room temperature. Upon completion, reaction was concentrated under reduced pressure and purified by silica gel chromatography (EtOAc toEtOAc:MeOH, gradient) to provide 2.12 g (3.10 mmol, 89% yield) of tert-butyl 1-((4-(4-(3-(3-(prop-2-yn-1-yloxy)propanamido)propoxy)benzoyl)phenyl)amino)-3,6,9,12-tetraoxapentadecan-15-oate as slightly yellow oil.

1. customUpon completion, reaction
2. concentrationwas concentrated under reduced pressure
3. custompurified by silica gel chromatography (EtOAc toEtOAc:MeOH, gradient)