Rutin → HCID 66688099、化合物

関与物質

反応手順

One hundred (100) grams of rutin was dissolved in one (1) liter of lN hydrochloric acid at a temperature of 80-90° C., and allowed to react at that temperature for a total of 3 hours, forming a yellowish-brown precipitate. The resultant mixture was allowed to cool to room temperature and the precipitate removed by filtration, with continual washing with distilled water, until a pH of 6.0-6.5 was obtained. The precipitate was dried and redissolved in 90% ethyl alcohol, and filtered to remove impurities, with the alcohol subsequently distilled off. The remaining precipitate was then suspended in 200 ml of distilled water. Gradually, a solution of lN sodium hydroxide was added, until a clear, golden-brown solution without a precipitate was obtained. This solution was oven dried at a temperature of 70-80° C., yielding a brown powder of quercetin chalcone. The quercetin chalcone produced by this method was soluble in distilled water, a concentration of 20% quercetin chalcone in water was readily produced. Quercetin, on the other hand, was almost totally insoluble in water.

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