Hydrochloric Acid → Methyl (R)-2-((S)-2-(5-(4-(6-(2-((2S,4S)-4-hydroxy-1-((S)-2-(methoxycarbonylamino)-3-methyl butanoyl)pyrrolidin-2-yl)-1H-imidazol-5-yl)naphthalen-2-yl)phenyl)-1H-imidazol-2-yl)pyrrolidin-1-yl)-2-oxo-1-phenylethylcarbamate

Participants

Reaction Steps

To (S)-tert-butyl 2-(5-(4-(6-(2-((2S,4S)-4-hydroxy-1-((S)-2-(methoxycarbonylamino)-3-methylbutanoyl)pyrrolidin-2-yl)-1H-imidazol-5-yl)naphthalen-2-yl)phenyl)-1H-imidazol-2-yl)pyrrolidine-1-carboxylate (61 mg, 0.082 mmol) in MeOH (2.5 mL) was added HCl (4M in dioxane, 0.5 mL). The solution stirred o/n, and the solvent was removed. The intermediate was dissolved in DMF (2 mL). (R)-2-(methoxycarbonylamino)-2-phenylacetic acid (19 mg, 0.09 mmol), COMU (39 mg, 0.082 mmol), and DIPEA (0.07 mL, 0.41 mmol) were added sequentially. The solution was stirred o/n and the mixture was purified by HPLC to yield product (15.5 mg). LCMS-ESI+: calc'd for C47H50N8O7: 838.95 (M+); Found: 839.29 (M+H+).

Provenance & Evidence