tert-butyl(S)-1-((3S,4S)-1-((2-chloro-3-methylquinolin-4-yl)methyl)-4-methyl-5-(2-(methylsulfonyl)acetyl)-2-oxo-2,3,4,5-tetrahydro-1H-benzo[b][1,4]diazepin-3-ylamino)-1-oxopropan-2-yl(methyl)carbamate → (S)-N-((3S,4S)-1-((2-chloro-3-methylquinolin-4-yl)methyl)-4-methyl-5-(2-(methylsulfonyl)acetyl)-2-oxo-2,3,4,5-tetrahydro-1H-benzo[b][1,4]diazepin-3-yl)-2-(methylamino)propanamide hydrochloride

Participants

Reaction Steps

A rt suspension of tert-butyl(S)-1-((3S,4S)-1-((2-chloro-3-methylquinolin-4-yl)methyl)-4-methyl-5-(2-(methylsulfonyl)acetyl)-2-oxo-2,3,4,5-tetrahydro-1H-benzo[b][1,4]diazepin-3-ylamino)-1-oxopropan-2-yl(methyl)carbamate (61.6 mg, 89.8 μmol) in 4 M HCl in dioxane (449 μl) was stirred for 2 h. The reaction was diluted with Et2O and the solids were collected by vacuum filtration, taken up in MeCN—H2O, and lyophilized to provide (S)-N-((3S,4S)-1-((2-chloro-3-methylquinolin-4-yl)methyl)-4-methyl-5-(2-(methylsulfonyl)acetyl)-2-oxo-2,3,4,5-tetrahydro-1H-benzo[b][1,4]diazepin-3-yl)-2-(methylamino)propanamide hydrochloride (44.2 mg, 79%) as a white solid. MS m/z 586 (MH)+.

Provenance & Evidence