Compounds of the formula ##STR1## wherein R is phenyl which may be substituted; or their acid addition salts, are produced in good yield by reacting a compound of the formula ##STR2## wherein R.sup.1, R.sup.2 and R.sup.3, independently of one another, are hydroxyl which may be protected, which is prepared in 2 or 3 steps from 5-amino-1-.beta.-D-ribofuranosylimidazole-4-carboxamide, with a compound of the formula ##STR3## wherein R has the same meaning as defined above and X is amino which may be substituted or lower alkylthio, and, if necessary subjecting the resulting compound to a treatment for removal of protective groups on its hydroxyls.
公式为##STR1##的化合物,其中R是苯基,可以被取代;或其酸盐,通过将公式为##STR2##的化合物(其中R.sup.1,R.sup.2和R.sup.3彼此独立,是可以被保护的羟基),该化合物从5-
氨基-1-.beta.-
D-核糖呋喃基
咪唑-4-甲酰胺经2或3步制备而成,与公式为##STR3##的化合物(其中R具有与上述定义相同的含义,X是可以被取代的
氨基或较低的烷基
硫基),并且如有必要,将所得化合物进行去除羟基保护基的处理,可以高产率地制备。