Oxazolopyrimidine and thiazolopyrimidine derivatives related to the xanthines.
D006801:Humans; D011743:Pyrimidines; D013844:Thiazoles; D014970:Xanthines
D011743:Pyrimidines; D013844:Thiazoles; D014970:Xanthines
PYRIMIDINES/preparation of; THIAZOLES/preparation of