Cesium carbonate → 7-[3-(4-acetylpiperazin-1-yl)propoxy]-4-(1H-indazol-5-yloxy)-6-methoxyquinazoline

Participants

Reaction Steps

A mixture of 7-[3-(4-acetylpiperazin-1-yl)propoxy]-4-chloro-6-methoxyquinazoline (235 mg, 0.62 mmol), (prepared as described for the starting material in Example 7), 5-hydroxyindazole (100 mg, 0.75 mmol) and cesium carbonate (303 mg, 0.93 mmol) in acetone (15 ml) was heated at reflux for 1.25 hours. The mixture was cooled, filtered and the filtrate concentrated under reduced pressure. The residue was purified by column chromatography eluting with methylene chloride/methanol (saturated with ammonia) (96/4). The residue was further purified by preparative HPLC to give 7-[3-(4-acetylpiperazin-1-yl]propoxy]-4-(1H-indazol-5-yloxy)-6-methoxyquinazoline (127 mg, 43%) as a white foam.

Provenance & Evidence