tert-Butyldimethylsilyl chloride → HCID 86685119, compound

Participants

Reaction Steps

(2S,3R,4S,5S,6R)-2-[4-chloro-3-[(4-ethoxy-2,3-difluoro-phenyl)methyl]phenyl]-6-(hydroxymethyl)-2-methoxy-tetrahydropyran-3,4,5-triol 3f (3.0 g, 6.8 mmol) was dissolved in 30 mL pyridine, followed by addition of 4-dimethylamino pyridine (166 mg, 1.36 mmol) and TBSCl (1.23 g, 8.2 mmol) in turn. The reaction mixture was stirred for 16 hours. Thereafter, the reaction mixture was concentrated under reduced pressure before 150 mL ethyl acetate were added. The reaction mixture was washed with saturated copper sulfate solution (100 mL) and saturated sodium chloride solution (100 mL) in turn. The organic extract was combined, dried over anhydrous magnesium sulfate, and filtered. The filtrate was concentrated under reduced pressure to obtain the title compound (2S,3R,4S,5S,6R)-6-[(tert-butyl(dimethyl)silyl)oxymethyl]-2-[4-chloro-3-[(4-ethoxy-2,3-difluoro-phenyl)methyl]phenyl]-2-methoxy-tetrahydro-pyran-3,4,5-triol 3g (3.75 g, white solid), yield: 99.7%.

Provenance & Evidence