Hydrochloric Acid → (S)-N-((3S,4S)-5-acetyl-7-cyano-1-((3-cyclopropylquinolin-4-yl)methyl)-4-methyl-2-oxo-2,3,4,5-tetrahydro-1H-benzo[b][1,4]diazepin-3-yl)-2-(methylamino)propanamide dihydrochloride

Participants

Reaction Steps

A rt suspension of tert-butyl(S)-1-((3S,4S)-5-acetyl-7-cyano-1-((3-cyclopropylquinolin-4-yl)methyl)-4-methyl-2-oxo-2,3,4,5-tetrahydro-1H-benzo[b][1,4]diazepin-3-ylamino)-1-oxopropan-2-yl(methyl)carbamate (26.8 mg, 42.9 μmol) in 4 M HCl in dioxane (214 μl) was stirred at rt 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)-5-acetyl-7-cyano-1-((3-cyclopropylquinolin-4-yl)methyl)-4-methyl-2-oxo-2,3,4,5-tetrahydro-1H-benzo[b][1,4]diazepin-3-yl)-2-(methylamino)propanamide dihydrochloride (21.9 mg, 85%) as a white solid. MS m/z 525 (MH)+.

Provenance & Evidence