Sodium Bicarbonate → HCID 57663751, compound

Participants

Reaction Conditions

Reaction Steps

A mixture of 1-ethoxy-2-(6-methyl-2,5-dioxo-5,6-dihydro-4H-imidazo[1,5,4-de]quinoxalin-1(2H)-yl)ethaniminium chloride from Step B (72 mg, 0.22 mmol) and (2S)-5-(2-aminoethyl)-6-nitro-1,3-dihydrospiro[indene-2,3′-pyrrolo[2,3-b]pyridin]-2′(1′H)-one (73 mg, 0.25 mmol, described in Intermediate 15) in EtOH (7 mL) was heated to 100° C. for 5 min then allowed to cool. The reaction was poured into dilute aqueous NaHCO3 (50 mL) and the mixture was extracted with EtOAc (100 mL). The organic layer was washed with brine, dried over Na2SO4, filtered, and concentrated under reduced pressure. The crude product was purified by silica gel chromatography, eluting with a gradient of CH2Cl2:MeOH—100:0 to 80:20, to give the title compound. MS: 71/Z=520 (M+1) HRMS: m/z=520.2081; calculated m/z=520.2092 for C29H26N7O3.

Provenance & Evidence