tert-Butyldimethylsilyl trifluoromethanesulphonate → HCID 86690365, compound

Participants

Reaction Steps

To a solution of 6-bromo-3-[(3R,4S)-3-hydroxytetrahydro-2H-pyran-4-yl]benzo[h]quinazolin-4(3H)-one (1.00 g, 2.67 mmol) in CH2Cl2 (40 mL) was added DMAP (1.68 g, 13.3 mmol) and then tert-butyl dimethylsilyl trifluoromethane sulfonate (1.84 mL, 8.00 mmol) and the reaction was stirred overnight. The reaction was diluted with saturated, aqueous NaHCO3 and extracted 1× with CH2Cl2. The organics were washed with brine, dried over MgSO4, filtered, concentrated, and dried. The oily residue was purified via silica gel chromatography, eluting with 5-55% ethyl acetate in hexanes to provide 1,5-anhydro-3-(6-bromo-4-oxobenzo quinazolin-3(4H)-yl)-2-O-[tert-butyl(dimethyl)silyl]-3,4-dideoxy-L-threo-pentitol that gave a mass ion (ES+) of 490.8 for [M+H]+.

Provenance & Evidence