Sodium Hydroxide → HCID 85471029, compound

Participants

Reaction Conditions

Reaction Steps

Dissolving intermediate 6, 4-((3-(4-cyclohexylpiperazin-1-yl)-6-oxo-6H-anthra[1,9-cd]isoxazol-5-yl)amino)benzoic acid in sodium hydroxide in methanol solution. Raising temperature to about 40° C. and maintaining for 2-3 hours. Then lowering temperature and filtering solid to get Compound I, sodium 4-((3-(4-cyclohexylpiperazin-1-yl)-6-oxo-6H-anthra[1,9-cd]isoxazol-5-yl)amino)benzoate. The compound was purified in sodium hydroxide in methanol solution and dried. It gave more than 99% (HPLC, area %) purity and about 45% yield. Mass spectra gave [M+1]=523.2. 1H-NMR (400 MHz, DMSO-d6, see also FIG. 3), ppm (δ): 11.79 (1H, s), 8.48 (1H, d), 8.20 (1H, d), 7.93 (2H, d), 7.84 (1H, t), 7.72 (1H, t), 7.35 (2H, d), 6.39 (1H, s), 3.85 (4H, m), 2.72-2.70 (4H, m), 2.28-2.265 (1H, m), 1.72-1.78 (4H, m), 1.55-1.58 (1H, m), 1.08-1.23 (5H, m).

Provenance & Evidence