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.
含有下列化合物的治疗组合物:##STR1## 其中:R.sub.1、R.sub.2和R.sub.3均为氢、羟基、1至4个碳原子的烷氧基、1至4个碳原子的酰氧基、卤素或硝基,或者R.sub.2和R.sub.3共同形成--OCH.sub.2 O--; 或者相应的酰化衍
生物,其中在氢
嘧啶基中有一个或多个酰基,每个酰基含有1至20个碳原子,并且使用所述化合物来控制病毒感染,特别是由小肠病毒组的病毒引起的感染。