1-(2-Furoyl)piperazine → 1-[4-(Furan-2-carbonyl)-piperazin-1-yl]-3-[2-methyl-4-(3-methyl-4,10-dihydro-3H-2,3,4,9-tetraaza-benzo[f]azulene-9-carbonyl)-phenyl]-propan-1-one

Participants

Reaction Steps

A solution of HBTU (1.90 mg, 0.005 mmol) in DMF (0.05 ml) was added to a solution of 3-[2-methyl-4-(3-methyl-4,10-dihydro-3H-2,3,4,9-tetraaza-benzo[f]azulene-9-carbonyl)-phenyl]-propionic acid from Example E45 (1.95 mg, 0.005 mmol) in DMF (0.05 ml) and DIEA (0.0022 ml). The mixture was stirred at room temperature for 30 min then a solution of 1-(2-furoyl)piperazine (0.90 mg, 0.005 mmol) in DMF (0.05 ml) was added. The mixture was stirred for 18 h at room temperature then sol-vents were removed in vacuo to yield the title compound. (ESI)+: [M+H]+=553.4

Provenance & Evidence