HCID 69882101, compound → HCID 69881648, compound

Participants

Reaction Steps

A mixture of 2,3,9,10-tetrafluoro-12-(2-O-benzyl-3,6-anhydro-4-deoxy-β-D-glucopyranosyl)-6,7,12,13-tetrahydro(5H)indolo[2,3-a]pyrrolo[3,4-c]carbazole-5,7-dione (0.034 g, 0.055 mmol) and 20% Pd(OH)2/C (0.048 g) in 5 mL of freshly distilled THF was hydrogenated (balloon pressure) at room temperature for 5 days. The resulting mixture was filtered through a bed of Celite and the cake was washed with THF and then with methanol. The filtrate was evaporated and the residue was chromatographed (Sephadex LH-20/methanol) to give the title compound (0.017 g, 59%) as a yellow solid: 1H NMR (THF-d8, 400 MHz) δ 11.15 (br s, 1H), 10.17 (br s, 1H), 9.19 (dd, J=11.1, 8.5 Hz, 1H), 9.09 (dd, J=11.2, 8.3 Hz, 1H), 7.81 (dd, J=11.6, 6.7 Hz, 1H), 7.51 (dd, 10.5, 6.7 Hz, 1H), 6.21 (d, J=7.3 Hz, 1H), 5.37 (br s, 1H), 4.89 (s, 1H), 4.57 (m, 2H), 4.27 (d, J=9.7 Hz, 1H), 3.85 (d, J=9.1 Hz, 1H), 3.09 (d, J=13.4 Hz, 1H), 2.09 (dd, J=13.1, 6.0 Hz, 1H); MS (ESI−) m/e 524 (M−H)−; HPLC: 99.0% (270 nm).

Provenance & Evidence