Specific inhibitors in vitamin biosynthesis. Part 9. Reactions of 7,7-dialkyl-7,8-dihydropteridines of use in the synthesis of potential inhibitors of tetrahydrofolate biosynthesis
作者:Saiba S. Al-Hassan、Robert Cameron、Sydney H. Nicholson、David H. Robinson、Colin J. Suckling、Hamish C. S. Wood
DOI:10.1039/p19850002145
日期:——
protium for deuterium under acidic and basic conditions: however, they failed to undergo clean bromination or aldol condensation. Autoxidation of alkyl groups at this position provided ready access to pteridines substituted with carbonyl groups at C-6. 6-Formyl derivatives underwent Wittig-type reactions to yield 6-aralkylidene compounds that are potential inhibitors of dihydrofolate reductase. Alkylation
Agonistic or antagonistic mucosal-associated invariant T (MAIT) cell activity is determined by the 6-alkylamino substituent on uracil MR1 ligands
作者:Chriselle D. Braganza、Chihiro Motozono、Koh-Hei Sonoda、Sho Yamasaki、Kensuke Shibata、Mattie S. M. Timmer、Bridget L. Stocker
DOI:10.1039/d0cc00247j
日期:——
The 6-alkylamino side chain of aminouracil MR1 ligands controls MAIT cell agonistic or antagonistic activity.
6-烷基氨基尿嘧啶MR1配体的侧链控制MAIT细胞的激动或拮抗活性。
Computer Modelling and Synthesis of Deoxy and Monohydroxy Analogues of a Ribitylaminouracil Bacterial Metabolite that Potently Activates Human T Cells
作者:Geraldine J. M. Ler、Weijun Xu、Jeffrey Y. W. Mak、Ligong Liu、Paul V. Bernhardt、David P. Fairlie
DOI:10.1002/chem.201903732
日期:2019.12.5
5-(2-Oxopropylideneamino)-6-d-ribitylaminouracil (5-OP-RU) is a natural product formed during bacterial synthesis of vitamin B2. It potently activates mucosal associated invariant T (MAIT) cells and has immunomodulatory, inflammatory, and anticancer properties. This highly polar and unstable compound forms a remarkably stable Schiff base with a lysine residue in major histocompatibility complex class I-related
Location, location, location: All the stereoisomers of 5‐OP‐RU were synthesized to elucidate the effects of its stereochemistry on MR1‐dependent MAIT cell activation. Of the stereoisomers, only the 4’‐OH epimer demonstrated potent MAIT cell activity, thus indicating that the configuration of the 2’‐OH and 3’‐OH group could be important for agonistic activity.
Synthesis of New Acyclic Pyrimidine Nucleoside Analogs as Potential Antiviral Drugs
作者:Kurt Eger、Eberhard M. Kluender、Mathias Schmidt
DOI:10.1021/jm00045a010
日期:1994.9
The synthesis of 6-[N-(4-hydroxybutyl)amino]pyrimidinone derivatives 18-23 and the acyclic phosphonate nucleoside analogs 29-30 is reported. Their cytotoxic and antiviral effects were investigated. 2,5-Diamino-6-[N-[2-(phosphonomethoxy)ethyl]amino]pyrimidin-4(3H)- one (30) showed strong antiviral effects, and 21 showed significant cytotoxic activity.