[Basic substitution of purine derivatives.  I].
D002110:Caffeine / Q000378:metabolism*; D002317:Cardiovascular Agents; D013806:Theophylline / Q000031:analogs & derivatives
D002317:Cardiovascular Agents; D002110:Caffeine; D013806:Theophylline
CAFFEINE/metabolism; THEOPHYLLINE/related compounds
Basisch substituierte Purin-Derivate.  I.