Hydrochloric Acid → N-[3-(3-Amidinophenyl)-2-(E)-propenyl]-N-[3-carbamoyl-4-[1-(4,5-dihydrooxazol-2-yl)piperidin-4-yloxy]phenyl]methanesulfonamide dihydrochloride

Beteiligte Stoffe

Reaktionsschritte

To a solution of N-[3-(3-amidinophenyl)-2-(E)-propenyl]-N-[3-carbamoyl-4-(piperidin-4-yloxy)phenyl]methanesulfonamide (0.32 g) obtained in example 99(a) in methanol (15 ml) were added successively 2-ethoxy-4,5-dihydrooxazole (0.21 g), which was prepared from 2-oxazolidone according to the method described in Eur. J. Org. Chem., 10, 2645 (1999), and triethylamine (0.56 ml) at room temperature, and the resulting mixture was stirred at room temperature for 2 hours and allowed to stand at room temperature overnight and then evaporated in vacuo. The residue obtained was purified by preparative HPLC (YMC-Pack ODS-A; YMC, eluent: 12% acetonitrile/water). The amorphous solid obtained was dissolved in 1N hydrochloric acid (1.2 ml) and evaporated to dryness in vacuo to afford the title compound (0.15 g, yield: 59%) as a colorless amorphous solid.

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