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NCI Drug Dictionary

  

lometrexol 
A folate analog antimetabolite with antineoplastic activity. As the 6R diastereomer of 5,10-dideazatetrahydrofolate, lometrexol inhibits glycinamide ribonucleotide formyltransferase (GARFT), the enzyme that catalyzes the first step in the de novo purine biosynthetic pathway, thereby inhibiting DNA synthesis, arresting cells in the S phase of the cell cycle, and inhibiting tumor cell proliferation. The agent has been shown to be active against tumors that are resistant to the folate antagonist methotrexate. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)
Abbreviations:(6R)-DDATHF
LMTX
Chemical structures:6R-5,10-Dideazatetrahydrofolate
L-Glutamic acid, N-(4-(2-((6R)-2-amino-1,4,5,6,7,8-hexahydro-4-oxopyrido(2,3-d)pyrimidin-6-yl)ethyl)benzoyl)-
L-Glutamic acid, N-(4-(2-(2-amino-1,4,5,6,7,8-hexahydro-4-oxopyrido(2,3-d)pyrimidin-6-yl)ethyl)benzoyl)-, (R)-
Pyrido[2,3-d]pyrimidine, L-glutamic acid derivative (9CI)