Lithium borohydride → N-[2-[[(2,3-difluorophenyl)methyl]thio]-6-[(1R)-2-hydroxy-1-methylethoxy]-4-pyrimidinyl]-2-thiazolesulfonamide

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Reaction Steps

To a solution of 2-[[2-[[(2,3-difluorophenyl)methyl]thio]-6-[(2-thiazolylsulfonyl)amino]-4-pyrimidinyl]oxy]-(2R)-propanoic acid ethyl ester (the product from step ii) (0.11 g) in THF (3 mL) was added lithium borohydride (2 M solution in THF, 0.23 mL) and the mixture was mixture was stirred at ambient temperature for 20 h. The reaction mixture was cooled to 0° C., quenched with 0.5M HCl solution and the aqueous was extracted with EtOAc (×2). The combined organic layers were dried (MgSO4), filtered and evaporated. The residue was purified by column chromatography on silica gel using MeOH/DCM (99:1 to 98:2 gradient) as eluent to give the title compound as a white solid. Yield: 15 mg

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