HCID 86652685, compound → HCID 50943785, compound

Participants

Reaction Steps

2-Fluoroethyl 2-(4-((1E,4E)-2-(tert-butoxycarbonylamino)-4-((3-(tert-butyldimethylsilyloxy)propyl)(propyl)carbamoyl)-3H-benzo[b]azepin-8-yl)phenyl)acetate was dissolved in 2 mls of dichloromethane and 0.5 ml of TFA. After about one hour, the mixture was concentrated under reduced pressure and the resulting residue was then re-dissolved in dichloromethane and 1 ml of concentrated ammonium hydroxide added and the mixture vigorously stirred for 15 minutes. This mixture was then diluted with water, extracted with dichloromethane (2×), extracts dried over sodium sulfate and concentrated under reduced pressure. Preparative thin layer chromatography (2×0.5 mm plates, 10% MeOH/DCM/0.5% NH4OH) afforded 0.012 g (35%) of 2-fluoroethyl 2-(4-((1E,4E)-2-amino-4-((3-hydroxypropyl)(propyl)carbamoyl)-3H-benzo[b]azepin-8-yl)phenyl)acetate. 1H NMR (400 MHz, CDCl3) δ 7.60-7.65 (m, 2H), 7.49-7.51 (m, 1H), 7.29-7.39 (m, 4H), 6.87 (s, 1H), 4.66-4.69 (m, 1H), 4.54-4.58 (m, 1H), 4.39-4.43 (m, 1H), 4.32-4.36 (m, 1H), 3.73 (s, 2H), 3.58-3.68 (m, 4H), 3.43-3.52 (m, 2H), 1.78-1.87 (m, 2H), 1.65-1.75 (m, 2H), 0.90-0.96 (m, 3H); m/z (APCI-pos) M+1=482.2.

Provenance & Evidence