Pioglitazone Hydrochloride → Pioglitazone

Beteiligte Stoffe

Reaktionsschritte

An aqueous solution of 0.5 wt % polyvinyl alcohol (Gosenol EG-05 (registered trademark), manufactured by The Nippon Synthetic Chemical Industry Co., Ltd.) was prepared and used as a poor solvent. In addition, lactic acid-glycolic acid copolymer (PLGA7520, lactic acid/glycolic acid=75/25, weight average molecular weight 20,000, Wako Pure Chemical Industries, Ltd.) (1 g) was dissolved in acetone (40 mL) and mixed with pioglitazone hydrochloride (40 mg) in methanol (20 mL), and the mixture was used as a polymer solution. The solution was added dropwise at 4 mL/min to the earlier-obtained poor solvent at 40° C. with stirring at 400 rpm to give a pioglitazone-containing PLGA nanoparticle suspension. Acetone and methanol were evaporated under reduced pressure for 1.5 hr, and the residue was freeze-dried to give a pioglitazone-containing PLGA nanoparticle powder.

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