HCID 22676723, compound → HCID 22676739, compound

Participants

Reaction Steps

To a Parr shaker bottle purged with Argon was added palladium on carbon (Degussa type) (500 mg), ethyl acetate (10 mL), ethyl 3-(4-methoxyphenyl)-1-{[3-(phenylmethoxy)phenyl]methyl}indole-2-carboxylate (Example 45, 5 g crude material, 7.0 mmol, in 120 mL methanol and 40 mL ethyl acetate). The mixture was hydrogenated at 55 psi for 48 h. The mixture was then filtered through Celite and the filtrate was concentrated in vacuo. The residue was purified with silica gel flash chromatography using hexane/ethyl acetate (3/1 to 2/1) to give ethyl 1-[(3-hydroxyphenyl)methyl]-3-(4-methoxyphenyl)indole-2-carboxylate as a light yellow oil (2.5 g, 89%): MS (M+) calcd for C25H23NO4 401.1, found 401.0; 1H NMR (CDCl3) δ 7.60 (dd, J=8.1 Hz, 1H), 7.30-7.45 (m, 4H), 7.13-7.21 (m, 2H), 6.98 (d, J=8.1 Hz, 2H), 6.64-6.78 (m, 2H), 6.52 (s, 1H), 5.77 (s, 2H), 4.14 (q, J=7.0 Hz, 2H), 1.04 (t, J=7.0 Hz, 3H).

Provenance & Evidence