海因 、 3,5-二甲氧基苯甲醛 、 C.I.酸性橙108 以
水 为溶剂,
反应 4.0h,
以Isolation in the usual manner gave the title compound as a beige solid (2.870 g.), m.p. 285°-287°的产率得到5-(3',5'-Dimethoxybenzal) hydantoin
Therapeutic compositions containing a compound of the formula: ##STR1## wherein: R.sub.1, R.sub.2, and R.sub.3 are each hydrogen, hydroxy, alkoxy f 1 to 4 carbon atoms, acyloxy of 1 to 4 carbon atoms, halo, or nitro, or R.sub.2 and R.sub.3 together form --OCH.sub.2 O--; or the corresponding acylated derivatives wherein there are one or more acyl groups in the hydantoin moiety and each acyl group contains from 1 to 20 carbon atoms, and the use of said compounds to control virus infections, in particular those caused by viruses of the Picorna group.