HCID 69748748, compound → HCID 69748549, compound

Participants

Reaction Steps

In a dry 500-mL Paar flask charged with palladium (10 wt % Pd, dry basis, on carbon, 31 mg) was added methanol (10 mL) and (3S,4R)-4-benzyloxycarbonylamino-3-[(S)-3-(4-fluoro-benzyl)-piperidine-1-carbonyl]-piperidine-1-carboxylic acid t-butyl ester (150 mg, 2.08 mmol). The reaction mixture was hydrogenated at 45 psi for 20.5 hours with vigorous shaking. The reaction mixture was filtered through a plug of celite. The plug was washed with 20 mL of ethanol and the combined filtrates were concentrated in vacuo to give a colorless oil (111 mg, 98%). 1H NMR (300 MHz, CDCl3), δ: 8.75 (bs, 2H), 7.09 (m, 2H), 6.97 (m, 2H), 4.30 (m, !H), 4.01 (m, 2H), 3.70 (m, 2H), 3.25 (m, 1H), 3.10 (m, 1H), 2.75 (m, 1H), 2.48 (m, 4H), 1.82 (m, 5H), 1.42 (s, 9H), 1.21 (m, 2H). MS (ESI), m+/z: (M+H)+=420.3.

Provenance & Evidence