反应详情

To a solution of 250 mg of 4-((S)-4-tert-Butoxycarbonyl-2-{[4-((R)-1-carboxy-ethoxy)-7-methyl-quinoline-2-carbonyl]-amino}-butyryl)-piperazine-1-carboxylic acid ethyl ester in 2.5 ml of DCM, 96 mg of EDC, 92 mg of pentafluorophenol was added and the reaction mixture was stirred for 2 h. Then, 117 mg of (S)-Pyrrolidine-2-carboxylic acid cyclobutylamide trifluoroacetate and 192 mg of NEM in 2 ml of DCM was added. After 2 h the reaction mixture was diluted with water. After filtration through a chem Elut® cartridge by eluting with ethyl acetate the solvents were removed under reduced pressure. The isolated crude product was pure enough for the next reaction step.

1. filtrationAfter filtration through a chem Elut® cartridge
2. washby eluting with ethyl acetate the solvents
3. customwere removed under reduced pressure
4. customThe isolated crude product
5. customwas pure enough for the next reaction step