HCID 71598746, compound → HCID 136252908, compound

Participants

Reaction Steps

A solution of ethyl 3,4-bis(benzyloxy)-1-(4-methoxyphenyl)-5-(pyridin-2-yl)-1H-pyrrole-2-carboxylate (UL1-082) (146 mg, 0.273 mmol) in MeOH/THF (9:1; 20 mL) was passed through a Thales ‘H-cube’ cartridge (10% Pd/C) at a flow rate of 1 mL/min at 30° C. under H2 (full H2 mode). The output was concentrated in vacuo and the resulting oil was purified by silica gel chromatography (12 g, 0-2% MeOH in DCM) to afford ethyl 3,4-dihydroxy-1-(4-methoxyphenyl)-5-(pyridin-2-yl)-1H-pyrrole-2-carboxylate (UL1-083) (86 mg, 89%) as a pale orange solid: m/z 355 (M+H)+ (ES+). 1H NMR (400 MHz, DMSO-d6) δ: 10.84 (s, 1H), 8.62 (s, 1H), 8.56-8.47 (m, 1H), 7.67-7.55 (m, 1H), 7.26-7.12 (m, 3H), 7.01-6.89 (m, 2H), 6.62-6.49 (m, 1H), 4.01 (q, J=7.1 Hz, 2H), 3.80 (s, 3H), 1.02 (t, J=7.1 Hz, 3H).

Provenance & Evidence