Methanol → HCID 22284288, compound

Participants

Reaction Steps

Methanol (0.15 ml) and a 1 N aqueous sodium hydroxide solution (0.34 ml) are added to a solution of methyl 2-{(2RS)-2-isopropyl-3-oxo-3,4-dihydro-2H-1,4-thiazin-4-yl}acetate (70 mg, Reference compound No. 43-1) in tetrahydrofuran (0.15 ml) under ice cooling, then the temperature is raised to room temperature, and the mixture is stirred for 15 minutes. Diethyl ether is added to the reaction mixture, and the whole is extracted with water. 2 N Hydrochloric acid is added to the extract to acidify the system, and the whole is extracted with ethyl acetate. The extract is washed with saturated brine and dried over anhydrous magnesium sulfate. The extract is concentrated under reduced pressure to give the titled reference Compound (65.7 mg).

Provenance & Evidence