PMID- 18686942 OWN - NLM STAT- MEDLINE DCOM- 20081024 LR - 20211020 IS - 1520-4804 (Electronic) IS - 0022-2623 (Print) IS - 0022-2623 (Linking) VI - 51 IP - 17 DP - 2008 Sep 11 TI - Asymmetric synthesis of inhibitors of glycinamide ribonucleotide transformylase. PG - 5441-8 LID - 10.1021/jm800555h [doi] AB - Glycinamide ribonucleotide transformylase (GAR Tfase) catalyzes the first of two formyl transfer steps in the de novo purine biosynthetic pathway that require folate cofactors and has emerged as a productive target for antineoplastic therapeutic intervention. The asymmetric synthesis and evaluation of the two diastereomers of 10-methylthio-DDACTHF (10R-3 and 10S-3) and related analogues as potential inhibitors of GAR Tfase are reported. This work, which defines the importance of the C10 stereochemistry for this class of inhibitors of GAR Tfase, revealed that both diastereomers are potent inhibitors of rhGAR Tfase (10R-3 Ki = 210 nM, 10S-3 Ki = 180 nM) that exhibit effective cell growth inhibition (CCRF-CEM IC50 = 80 and 50 nM, respectively), which is dependent on intracellular polyglutamation by folylpolyglutamate synthetase (FPGS) but not intracellular transport by the reduced folate carrier. FAU - DeMartino, Jessica K AU - DeMartino JK AD - Department of Chemistry, The Scripps Research Institute,10550 North Torrey Pines Road, La Jolla, California 92037, USA. FAU - Hwang, Inkyu AU - Hwang I FAU - Connelly, Stephen AU - Connelly S FAU - Wilson, Ian A AU - Wilson IA FAU - Boger, Dale L AU - Boger DL LA - eng GR - P01 CA063536/CA/NCI NIH HHS/United States GR - P01 CA063536-09/CA/NCI NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't DEP - 20080808 PL - United States TA - J Med Chem JT - Journal of medicinal chemistry JID - 9716531 RN - 0 (Antineoplastic Agents) RN - 0 (Enzyme Inhibitors) RN - EC 2.1.2.2 (Phosphoribosylglycinamide Formyltransferase) RN - EC 6.3.2.- (Peptide Synthases) RN - EC 6.3.2.17 (folylpolyglutamate synthetase) SB - IM MH - Antineoplastic Agents/*chemical synthesis MH - Cell Line, Tumor MH - Cell Proliferation/drug effects MH - Enzyme Inhibitors/*chemical synthesis MH - Humans MH - Inhibitory Concentration 50 MH - Peptide Synthases/metabolism MH - Phosphoribosylglycinamide Formyltransferase/*antagonists & inhibitors MH - Stereoisomerism MH - Structure-Activity Relationship PMC - PMC2559975 MID - NIHMS57807 EDAT- 2008/08/09 09:00 MHDA- 2008/10/25 09:00 PMCR- 2009/09/11 CRDT- 2008/08/09 09:00 PHST- 2008/08/09 09:00 [pubmed] PHST- 2008/10/25 09:00 [medline] PHST- 2008/08/09 09:00 [entrez] PHST- 2009/09/11 00:00 [pmc-release] AID - 10.1021/jm800555h [doi] PST - ppublish SO - J Med Chem. 2008 Sep 11;51(17):5441-8. doi: 10.1021/jm800555h. Epub 2008 Aug 8.