Ammonium formate → tert-butyl (3R)-3-({[(1S)-2,2-dimethyl-1-({[(1R)-1-phenylethyl]amino}carbonyl)propyl]amino}carbonyl)-6-(3-methyl-4-phenoxyphenyl)hexanoate

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Reaction Steps

A solution of tert-butyl (3R,5E)-3-({[(1s)-2,2-dimethyl-1-({[(1R)-1-phenylethyl]amino}carbonyl)propyl]amino}carbonyl)-6-(3-methyl-4-phenoxyphenyl)hex-5-enoate (615 mg, 1.00 mmol), ammonium formate (310 mg, 4.9 mmol) and 10% palladium on charcoal (65 mg) in methanol (8 mL) was stirred at 20° C. for 16 h. The mixture was filtered through Arbocel filter aid and concentrated under reduced pressure. The residue was dissolved in ethyl acetate and washed with saturated aqueous sodium chloride, dried (MgSO4) and concentrated under reduced pressure to give tert-butyl (3R)-3-({[(1S)-2,2-dimethyl-1-({[(1R)-1-phenylethyl]amino}carbonyl)propyl]amino}carbonyl)-6-(3-methyl-4-phenoxyphenyl)hexanoate (550 mg, 90%), as a foam, which was taken onto the next step without purification.

Provenance & Evidence