反应详情

To a solution of {(S)-1-[(S)-1-(6-bromo-2-methoxy-naphthalen-1-ylmethyl)-2-oxo-2,3,4,5-tetrahydro-1H-benzo[b][1,4]diazepin-3-ylcarbamoyl]-ethyl}-methyl-carbamic acid tert-butyl ester (Intermediate 11) (300 mg, 0.49 mmol) and pyrazine-2,5-dicarboxylic acid (41.2 mg, 0.24 mmol) in pyridine (5 mL) at 0° C. was added POCl3 (46 μL, 0.49 mmol) and the cooling bath removed. After 5 h, the mixture was diluted with dichloromethane, washed with water, dried (Na2SO4) and concentrated. The residue was purified by preparative reverse phase HPLC to afford tert-butyl N-[(1S)-2-[[(3S)-5-[(6-bromo-2-methoxy-1-naphthyl)methyl]-1-[5-[(3S)-5-[(6-bromo-2-methoxy-1-naphthyl)methyl]-3-[[(2S)-2-[tert-butoxycarbonyl(methyl)amino]propanoyl]amino]-4-oxo-2,3-dihydro-1,5-benzodiazepine-1-carbonyl]pyrazine-2-carbonyl]-4-oxo-2,3-dihydro-1,5-benzodiazepin-3-yl]amino]-1-methyl-2-oxo-ethyl]-N-methyl-carbamate (52 mg, 7.82%) as an off white solid. LC-MS: 1355.0 (M+H).

1. customthe cooling bath removed
2. additionthe mixture was diluted with dichloromethane
3. washwashed with water
4. dry with materialdried (Na2SO4)
5. concentrationconcentrated
6. customThe residue was purified by preparative reverse phase HPLC