反应详情

(1S)-2,3,4,6-Tetra-O-acetyl-1,5-anhydro-1-(4′-{(2S,3R)-3-[(3S)-3-(4-fluorophenyl)-3-hydroxypropyl]-4-oxo-1-phenylazetidin-2-yl}biphenyl-3-yl)-D-glucitol (10.5 mg, 0.013 mmol) was dissolved in 0.30 mL of methanol and 0.30 mL of triethylamine followed by drop-wise addition of water (0.80 mL). The yellowish mixture stirred at room temperature overnight. LCMS of the solution confirmed complete consumption of the starting material and formation of the fully deprotected material. The mixture was concentrated in vacuo, and purified by reverse-phase HPLC (Polaris C18-A 10 μ 250×21.2 mm column, 30% to 95% acetonitrile-0.1% trifluoroacetic acid in water) to afford 2.8 mg (35%) of the desired (1S)-1,5-anhydro-1-(4′-{(2S,3R)-3-[(3S)-3-(4-fluorophenyl)-3-hydroxypropyl]-4-oxo-1-phenylazetidin-2-yl}biphenyl-3-yl)-D-glucitol as a white powder; 1H NMR (300 MHz, CD3OD) δ 7.65 (d, J=11.1 Hz, 2H), 7.54-7.23 (m, 10H), 7.05-6.89 (m, 3H), 4.61 (t, J=6.3 Hz, 1H), 4.19 (d, J=9.0 Hz, 1H), 3.87 (d, J=10.7 Hz, 1H), 3.73-3.63 (m, 1H), 3.49-3.36 (m, 3H) 3.22-3.18 (m, 2H), 1.89 (m, 4H) ppm; MS [M−OH]+ 596.5.

1. customconsumption of the starting material and formation of the fully deprotected material
2. concentrationThe mixture was concentrated in vacuo
3. custompurified by reverse-phase HPLC (Polaris C18-A 10 μ 250×21.2 mm column, 30% to 95% acetonitrile-0.1% trifluoroacetic acid in water)