Acetyl chloride → [(2R,3R,4S,5R,6S)-3,4,5-tribenzyloxy-6-[4-chloro-3-[[4-(trifluoromethoxy)phenyl]methyl]phenyl]-6-methoxy-tetrahydropyran-2-yl]methanol

[[(2R,3R,4S,5R,6S)-3,4,5-tribenzyloxy-6-[4-chloro-3-[[4-(trifluoromethoxy)phenyl]methyl]phenyl]-6-methoxy-tetrahydropyran-2-yl]methoxy]tert-butyl-dimethyl-silane 6k (2.32 g, 2.69 mmol) was dissolved in 12 mL methanol, followed by addition of acetyl chloride (16 μL, 0.40 mmol). The reaction mixture was stirred for 1.5 hours. Thereafter, the reaction mixture was concentrated under reduced pressure and the resulting residue was purified by silica gel chromatography with elution system B to obtain the title compound [(2R,3R,4S,5R,6S)-3,4,5-tribenzyloxy-6-[4-chloro-3-[[4-(trifluoromethoxy)phenyl]methyl]phenyl]-6-methoxy-tetrahydropyran-2-yl]methanol 6m (1.22 g, pale yellow grease), yield: 60.7%. 1H NMR (400 MHz, CD3OD): δ 7.54-7.52 (m, 2H), 7.41 (d, 1H), 7.32-7.22 (m, 13H), 7.18 (d, 2H), 7.08-7.04 (m, 4H), 4.91-4.85 (m, 3H), 4.75 (d, 1H), 4.52 (d, 1H), 4.17-4.09 (m, 3H), 4.00 (d, 1H), 3.94-3.83 (m, 3H), 3.75-3.69 (m, 2H), 3.09 (s, 3H).

1. concentrationThereafter, the reaction mixture was concentrated under reduced pressure
2. customthe resulting residue was purified by silica gel chromatography with elution system B

ORD 기록

ord-641ecfd0602d43108321d17d8fd15649

출처 데이터셋

uspto-grants-2013_12

DOI

10.6084/m9.figshare.5104873.v1

특허 번호

US08609622B2