Triphenylphosphine → HCID 71086212, compound

Participants

Reaction Conditions

Reaction Steps

To the solution of ethyl 4-(2-((S)-3-(azidomethyl)-1,2,3,4-tetrahydroisoquinoline-2-carbonyl)-4-(naphthalen-2-ylsulfonylcarbamoyl)phenyl)-5-butyl-1-phenyl-1H-pyrazole-3-carboxylate (60 mg, 0.075 mmol, Example 261) in THF (2.0 mL) was added triphenylphosphine (59 mg, 0.226 mmol) followed by 0.2 ml of 1N NaOH. The reaction mixture was stirred at 50° C. for 2 h. The reaction mixture was quenched with sat. aq. sodium bicarbonate solution and then extracted with EtOAc. The organic extracts were dried over anhydrous sodium sulfate and concentrated in vacuo. The residue was purified by flash chromatography (Isco 40 g column eluting with 0-15% methanol/DCM). The residue was lyophilized from acetonitrile/water to give the title compound (29 mg, 50%). 1H NMR (CD3OD, 1:1 mixture of amide rotamers) δ 8.60 (s, 1H), 8.32 (s, 1H), 8.19-7.91 (m, 5H), 7.58-7.34 (m, 8H), 7.21-7.00 (m, 3.5H), 6.79-6.78 (m, 0.5H), 5.21-5.20 (m, 0.5H), 4.74-4.70 (m, 0.5H), 4.43-4.10 (m, 3H), 3.75-3.74 (m, 0.5H), 3.62-3.60 (m, 0.5H), 3.01-3.00 (m, 2H), 2.75-2.48 (m, 4H), 1.13-0.92 (m, 4H), 0.99 (t, J=8 Hz, 3H), 0.57-0.54 (m, 3H); MS(ESI+) m/z 770.5 (M+H)+.

Provenance & Evidence