In a search for new anthelmintic compounds, some 6,7-diaryl-pteridines
were synthesized from the corresponding diaminopyrimidines and aromat
ic aldehydes. Their anthelmintic activity was tested in vitro against
Caenorhabditis elegans and Heligmosomoides polygyrus and in vivo again
st Trichinella spiralis. Structure-activity relationships are discusse
d.