Diaminopyrimidine

Diaminopyrimidines (DAP) are a class of organic chemical compounds that include two amine groups on a pyrimidine ring.

They include many dihydrofolate reductase inhibitor drugs (such as pyrimethamine, trimetrexate, and piritrexim[1] and the antibiotics Iclaprim and trimethoprim).

Some have been patented as anti-cancer drugs.

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Iclaprim
Trimethoprim