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Xanthine: A substance found in caffeine, theobromine, and theophylline and encountered in tea, coffee, and the colas. Chemically, xanthine is a purine.There is a genetic disease of xanthine metabolism, xanthinuria, due to deficiency of an enzyme, xanthine dehydrogenase, needed to process xanthine in the body.reatment is by avoiding foods and drinks containing xanthine derivatives, such as coffee, tea, and colas. The name xanthine was taken from the Greek xanqos meaning yellow + quinine since it forms yellow salts and its solution forms a blue fluorescence as does quinine.
10 hilariously insightful foreign words. Xanthines are a group of compounds that are derivatives of xanthine, a purine base. These compounds are alkaloids and include such common mild stimulants as caffeine and theobromine, which is found in chocolate.Some are used medicinally to treat asthma and other respiratory conditions. Xanthine is involved in human physiology and is an intermediate in the production of uric acid.anthine oxidase converts into uric acid causing gout, a painful inflammatory condition. Xanthines can be used to treat emphysema. Chocolate contains theobromine, a mild stimulant that is a derivative of xanthine. Xanthines are sometimes used to treat asthma.