HCID 87100341, compound → HCID 86596704, compound

Participants

Reaction Conditions

Reaction Steps

To a solution of diethyl (3R)-3-t-butoxycarbonylamino-3-methyl-5-[5-(5-phenylpentanoyl)furan-2-yl]pent-1-enylphosphonate (127.8 mg, 0.23 mmol) obtained in Example (29c) in ethanol (2.3 ml) was added chlorotris(triphenylphosphine) rhodium(I) (22.0 mg, 0.024 mmol), and the resulting mixture was stirred at 50° C. under a hydrogen atmosphere for 8 hours. After cooling, to the reaction mixture was furthermore added chlorotris(triphenylphosphine)rhodium(I) (21.5 mg, 0.023 mmol), and the resulting mixture was stirred at 50° C. under a hydrogen atmosphere for 8 hours. After stirring, the reaction mixture was evaporated in vacuo, and the residue was purified by chromatography on a silica gel column using ethyl acetate as the eluent to afford the crude product (142.1 mg). Furthermore, the crude product obtained was purified using a preparative reversed phase HPLC column [Inertsil ODS-3 (2.0 cm×25 cm), GL Science, mobile phase: acetonitrile/water (75:25), flow rate: 10 ml/min] to afford the title compound (109.5 mg, yield: 85%)

Provenance & Evidence