tert-butyl (3-(2-(2-(3-((4-(4-((5,21-dioxo-25-(2-oxohexahydro-1H-thieno[3,4-d]imidazol-4-yl)-8,11,14,17-tetraoxa-4,20-diazapentacosyl)oxy)benzoyl)phenyl)amino)propoxy)ethoxy)ethoxy)propyl)carbamate → N-(3-(4-(4-((3-(2-(2-(3-aminopropoxy)ethoxy)ethoxy)propyl)amino)-benzoyl)phenoxy)propyl)-1-(5-(2-oxohexahydro-1H-thieno[3,4-d]imidazol-4-yl)pentanamido)-3,6,9,12-tetraoxapentadecan-15-amide

Participants

Reaction Steps

tert-butyl (3-(2-(2-(3-((4-(4-((5,21-dioxo-25-(2-oxohexahydro-1H-thieno[3,4-d]imidazol-4-yl)-8,11,14,17-tetraoxa-4,20-diazapentacosyl)oxy)benzoyl)phenyl)amino)propoxy)ethoxy)ethoxy)propyl)carbamate (16.1 g, 15.92 mmol) was dissolved in a solution of DCM:TFA (2:1, 96 ml) and the reaction mixture was stirred for ca. 1 h at r.t. Upon completion, reaction was then concentrated under reduced pressure, co-evaporated with toluene, and dried on pump for 5 hs to yield 14.13 g (98% yield) of crude N-(3-(4-(4-((3-(2-(2-(3-aminopropoxy)ethoxy)ethoxy)propyl)amino)benzoyl)phenoxy)propyl)-1-(5-(2-oxohexahydro-1H-thieno[3,4-d]imidazol-4-yl)pentanamido)-3,6,9,12-tetraoxapentadecan-15-amide as yellow oil.

Provenance & Evidence