Methanol → 7-[(R)-2-((E)-3-Hydroxy-4-phenyl-but-1-enyl)-6-oxo-piperidin-1-yl]-heptanoic acid methyl ester

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Reaction Steps

Sodium borohydride (35 mg, 0.93 mmol), followed by MeOH (0.25 mL), was added to a solution of 7-[(R)-2-oxo-6-((E)-3-oxo-4-phenyl-but-1-enyl)-piperidin-1-yl]-heptanoic acid methyl ester (36 mg, 0.093 mmol) in CH2Cl2 (0.75 mL) at 0° C. The mixture was allowed to warm to rt. After 3 h at rt, the reaction was quenched with aqueous HCl (0.5 M, 5 mL) and extracted with EtOAc (3×10 mL). The combined organic phase was washed with saturated aqueous NaHCO3 (10 mL) and brine (10 mL) then dried (Na2SO4), filtered and concentrated in vacuo. Purification of the residue by preparative thin layer chromatography (silica, 5% MeOH/CH2Cl2) afforded 20 mg (55%) of the title compound.

Provenance & Evidence