Xanthine compounds of the formula: ##STR1## in which: R.sub.1 is hydrogen or (C.sub.1 -C.sub.5) alkyl; R.sub.2 is hydrogen, (C.sub.1 -C.sub.5) alkyl optionally having a double bond, or benzyl; R.sub.3 is hydrogen or methyl; A is (CH.sub.2).sub.n, in which n is an integer from 1 to 4, optionally substituted, when n is higher than 1, by hydroxy; X is nitrogen or ##STR2## and the substituents R are each (C.sub.1 -C.sub.5) alkyl or they form together a polymethylene chain from C.sub.4 to C.sub.6, optionally containing an oxygen or a sulfur atom. These compounds and physiologically tolerable acid addition salts thereof may be used as medicines especially in the treatment of migraine and asthenia.
化学式为:##STR1## 的
黄嘌呤类化合物:其中:R.sub.1是氢或(C.sub.1-C.sub.5)烷基;R.sub.2是氢,(C.sub.1-C.sub.5)烷基,可选地含有双键,或苄基;R.sub.3是氢或甲基;A是(CH.sub.2).sub.n,其中n是1到4的整数,当n大于1时,可选地被羟基取代;X是氮或##STR2##,取代基R分别是(C.sub.1-C.sub.5)烷基,或它们一起形成一个C.sub.4到C.sub.6的聚甲基链,可选地含有氧或
硫原子。这些化合物及其生理耐受性酸盐可以用作药物,特别是用于治疗偏头痛和虚弱。