Substituted 2,3-dihydro-6-(hydroxy)pyrimido[2,1-f]purine-4,8(1H,9H)-diones their tautomers and salts, are anti-inflammatory and anti-allergy agents. Methods for their preparation and use are described.
2,3-二氢-6-(羟基)
嘧啶并[2,1-f]
嘌呤-4,8(1H,9H)-二酮及其互变异构体和盐,是抗炎和抗过敏剂。描述了其制备和使用方法。