Methanol → (4-{(R)-2-[4-(3-Chlorophenyl)-3-hydroxy-butyl]-6-oxo-piperidin-1-yl}-but-2-ynyloxy)-acetic acid methyl ester

Participants

Reaction Steps

Sodium borohydride (2 mg, 0.053 mmol) followed by MeOH (0.1 mL) was added to a solution of (4-{(R)-2-[4-(3-chlorophenyl)-3-oxo-butyl]-6-oxo-piperidin-1-yl}-but-2-ynyloxy)-acetic acid methyl ester (5 mg, 0.012 mmol) in CH2Cl2 (0.3 mL) at 0° C. After 10 min at 0° C. the reaction was quenched with aqueous HCl (0.25 M, 3 mL). The reaction mixture was extracted with CH2Cl2 (3×4 mL), then the combined extracts were dried (MgSO4), filtered and concentrated in vacuo. Purification of the residue by flash column chromatography on silica gel (CH2Cl2→2% MeOH/CH2Cl2) afforded 4.6 mg (92%) of the title compound.

Provenance & Evidence