92540-07-3Relevant articles and documents
Syntheses of 5-aryl-5,8-dihydropyrido[2,3-d]pyrimidine-2,4-diamines
Troschutz
, p. 709 - 713 (1984)
2,4,6-Triaminopyrimidine is reacted with 3,4,5-trimethoxybenzylidene-1,3-dicarbonyl compounds to yield Michael adducts which are cyclised in acidic medium to the 5,8-dihydropyrido[2,3-d]diamines. The title compounds posses a rigid trimethoprim structure and are of interest as potential inhibitors of dihydrofolate reductase (DHFR).