Acetonitrile → HCID 178483726, compound

Participants

Reaction Steps

95 mg (0.12 mmol) of 71% pure trans-4-[{3-[5-({[(2R)-2-{[tert-butyl(dimethyl)silyl]oxy}-2-(8-hydroxy-2-oxo-1,2-dihydroquinolin-5-yl)ethyl]amino}methyl)-2-oxo-2,3-dihydro-1H-benzimidazol-1-yl]propyl}(methyl)amino]cyclohexylhydroxy(di-2-thienyl)acetate (Intermediate 17) are dissolved in 2 ml THF. 0.05 ml (0.31 mmol) of triethylamine trihydrofluoride are added and the system stirred overnight at room temperature. The supernatant is discarded and the residue is washed with 2×10 additional ml of THF and the supernatant is again discarded. Acetonitrile (5 ml) is added to the residue and the solid is stirred for 2 hr, aged overnight, filtered and washed with acetonitrile. The residue is chromatographically purified with C-18 reversed phase column silica from MERCK, using water to acetonitrile/MeOH as eluents with a gradient from 0% to 100%. 31.8 mg of pure title compound are thus obtained (51% yield).

Provenance & Evidence