Iodoethane → (2S,3R,4R,5S,6R)-2-[4-chloro-3-(4-ethyl-3,4-dihydro-2H-benzo[1,4]oxazin-6-ylmethyl)-phenyl]-6-hydroxymethyl-tetrahydro-pyran-3,4,5-triol

Participants

Reaction Conditions

Reaction Steps

To a stirred solution of (2S,3R,4R,5S,6R)-2-[4-chloro-3-(3,4-dihydro-2H-benzo[1,4]oxazin-6-ylmethyl)-phenyl]-6-hydroxymethyl-tetrahydro-pyran-3,4,5-triol (0.1 g, 0.23 mmol) in DMF (2 mL) was added potassium carbonate (0.065 g, 0.47 mmol, ethyl iodide (0.028 mL, 0.35 mmol) and stirred the solution at 20° C. for 2 h. Reaction mixture was quenched by the addition of water (2 mL), extracted with dichloromethane (3×5 mL). The organic layer was washed with water (5 mL), brine (5 mL), dried over sodium sulfate, concentrated and purified by preparative HPLC to furnish (2S,3R,4R,5S,6R)-2-[4-chloro-3-(4-ethyl-3,4-dihydro-2H-benzo[1,4]oxazin-6-ylmethyl)-phenyl]-6-hydroxymethyl-tetrahydro-pyran-3,4,5-triol (20 mg).

Provenance & Evidence