Compounds of the formula ##STR1## wherein one of the radicals R.sup.1, R.sup.2 or R.sup.3 denotes a straight-chain alkyl group having 4 to 8 C atoms and two vicinal hydroxyl groups in the .omega.,.omega.-1 or .omega.-1,.omega.-2 positions and the two other radicals represent straight-chain or branched alkyl groups having up to 12 C atoms in the position of R.sup.1 and R.sup.3 and up to 4 C atoms in the position of R.sup.2, the total of C atoms in these two alkyl substituents being a maximum of 14, are prepared by oxidation of the corresponding alkenylxanthines and by alkylation with compounds which introduce the dihydroxyalkyl radical or a precursor thereof. The dihydroxyalkyldialkylxanthines are suitable for the treatment of obstructive respiratory tract diseases.
式子为##STR1##的化合物,其中R.sup.1、R.sup.2或R.sup.3中的一个表示具有4到8个碳原子的直链烷基,并且在.omega.,.omega.-1或.omega.-1,.omega.-2位置具有两个邻位羟基,而另外两个基团则代表具有最多12个碳原子的直链或支链烷基,在R.sup.1和R.sup.3的位置上具有最多4个碳原子的烷基,这两个烷基取代物中的碳原子总数最多为14。这些双羟基烷基二烷基
黄嘌呤化合物通过氧化相应的烯丙基
黄嘌呤并通过引入二羟基烷基基团或其前体的化合物进行烷基化制备而成。这些双羟基烷基二烷基
黄嘌呤化合物适用于治疗阻塞性呼吸道疾病。