Trifluoroacetic acid → HCID 67657695, compound

Participants

Reaction Steps

To a stirring solution of (7R)-7-[(phenylacetyl)amino]-3-(1-phenylpyrazol-5-ylthio)-3-cephem-4-carboxylate, 4-methoxybenzyl ester (80 mg, 0.12 mmol) and anisole (0.02 mL) in dichloromethane (2 mL) at 0° C. was added trifluoroacetic acid (0.5 mL). After 2 h at 0° C., the solvent was removed with a rotary evaporator, and the residue was subjected to chromatography on silica gel (3% acetic acid/ethyl acetate), affording 49 mg (83%) of the title compound. 1H NMR (acetone-d6) δ 3.21 (s, 2), 3.60 (d, 1, J=16), 3.65 (d, 1, J=16), 4.96 (d, 1, J=4), 5.71 (dd, 1, J=4, 9), 6.83 (d, 1, J=2), 7.2-7.6 (m, 10), 7.80 (d, 1, J=2), 8.05 (d, 1, J=9).

Provenance & Evidence