Hydrogen Bromide → methyl (S)-1-((2S,4S)-2-(5-(4'-(2-((2S,4S)-1-((R)-(tert-butoxycarbonylamino)-2-phenylacetyl)-4-(methoxymethyl)pyrrolidin-2-yl)-1H-imidazol-5-yl)biphenyl-4-yl)-1H-imidazol-2-yl)-4-(methylthio)pyrrolidin-1-yl)-3-methyl-1-oxobutan-2-ylcarbamate

(2S,4S)-benzyl 2-(5-(4′-(2-((2S,4S)-1-((S)-2-(methoxycarbonylamino)-3-methylbutanoyl)-4-(methylthio)pyrrolidin-2-yl)-1H-imidazol-5-yl)biphenyl-4-yl)-1H-imidazol-2-yl)-4-(methoxymethyl)pyrrolidine-1-carboxylate (220 mg, 0.27 mmol) was dissolved in DCM (5 mL), MeOH (0.4 mL) and cooled to 0° C. HBr (33% in AcOH, 1 mL) was added dropwise. After stirring for 1 hr, the mixture was concentrated under reduced pressure, coevaporating with PhMe. The crude residue was treated with (R)-2-(tert-butoxycarbonylamino)-2-phenylacetic acid (68 mg, 0.27 mmol), COMU (129 mg, 0.27 mmol) and DMF (5 mL), then DIPEA (0.24 mL, 1.35 mmol) was added dropwise. After 1 h, the mixture was diluted with EtOAc and washed successively with saturated aqueous NaHCO3 and brine. The organics were dried over MgSO4, filtered and concentrated under reduced pressure. The crude residue was purified by silica column chromatography (0% to 40% MeOH/EtOAc) to afford methyl (S)-1-((2S,4S)-2-(5-(4′-(2-((2S,4S)-1-((R)-(tert-butoxycarbonylamino)-2-phenylacetyl)-4-(methoxymethyl)pyrrolidin-2-yl)-1H-imidazol-5-yl)biphenyl-4-yl)-1H-imidazol-2-yl)-4-(methylthio)pyrrolidin-1-yl)-3-methyl-1-oxobutan-2-ylcarbamate (179 mg, 73%).

1. concentrationthe mixture was concentrated under reduced pressure
2. waitAfter 1 h
3. washwashed successively with saturated aqueous NaHCO3 and brine
4. dry with materialThe organics were dried over MgSO4
5. filtrationfiltered
6. concentrationconcentrated under reduced pressure
7. customThe crude residue was purified by silica column chromatography (0% to 40% MeOH/EtOAc)

ORD 기록

ord-732b26bc62d94ccebfa47423740f4463

출처 데이터셋

uspto-grants-2015_10

DOI

10.6084/m9.figshare.5104873.v1

특허 번호

US09156823B2