HCID 178526407, compound → HCID 469420, compound

Participants

Reaction Steps

A mixture of 0.339 g (1.048 mmol) of 26 and 0.090 g (wet) of Ra-Ni in 10 mL of EtOH was hydrogenated at room temperature, 50 psi of H2 for 7 h. The reaction mixture was filtered and the filtrate was evaporated. The residue was chromatographed on a silica column (2×6 cm, eluted successively with 1%, 2%, 3% MeOH/CHCl3). Evaporation of fractions 11-17 (20 mL per fraction) gave 0.190 g (62%) of 26a as a foam. An analytical sample (a yellowish crystalline compound) was obtained by recrystallization from MeOH. MP:>200° C. (dec). MS: (El) m/e 292.9202 (100%, M+ =292.9217). 1H NMR (DMSO-d6): d 12.80 (br s, 1, 1-NH), 7.75 (s, 1, 4-H), 6.87 (s, 1, 7-H), 5.03 (s, 2, 6-NH2). Anal. Calcd. for C7H5CllN3 : C, 28.65; H, 1.72; N, 14.32. Found: C, 28.84; H, 1.66; N, 14.17.

Provenance & Evidence