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.
Efficient syntheses of 1-bromodeoxy-, 1-azidodeoxy- and 1-aminodeoxypentitols from unprotected d-pentono-1,4-lactones
作者:Véronique Bouchez、Imane Stasik、Daniel Beaupère
DOI:10.1016/s0008-6215(99)00261-x
日期:1999.1
The reduction of unprotected 5-bromo-5-deoxy-D-ribono, D-arabinono and D-xylono-1,4-lactones was achieved with NaBH4 in water-EtOH. The corresponding 1-bromo-1-deoxypentitols were isolated after acetylation in good overall yields (60-90%). 1-Azido-1-deoxypentitols were obtained quantitatively either by nucleophilic substitution by azide ion and deacetylation of the corresponding monobromopentitols or by reduction of the corresponding 5-azido-5-deoxy-D-pentono-1,4-lactones. The reduction of the monoazidopentitols by catalytic hydrogen transfer gave the monoaminopentitol analogues in quantitative yield.
Studies on riboflavin analogs
作者:G. A. Vavilov、Z. V. Pushkareva
DOI:10.1007/bf00478402
日期:1970.4
HUNG, REBECCA R.;STRAUB, JULIE ANN;WHITESIDES, GEORGE M., J. ORG. CHEM., 56,(1991) N2, C. 3849-3855
作者:HUNG, REBECCA R.、STRAUB, JULIE ANN、WHITESIDES, GEORGE M.
DOI:——
日期:——
The effect of MR1 ligand glyco-analogues on mucosal-associated invariant T (MAIT) cell activation
作者:Chriselle D. Braganza、Kensuke Shibata、Aisa Fujiwara、Chihiro Motozono、Koh-Hei Sonoda、Sho Yamasaki、Bridget L. Stocker、Mattie S. M. Timmer
DOI:10.1039/c9ob01436e
日期:——
MAIT cells revealed that the absence of the 2'-hydroxygroup on the sugar backbone of lumazines improved MR1-MAIT TCR binding, which could be rationalised using computational docking studies. Although none of the lumazines activated MAIT cells, all 5-OP-RU analogues showed significant MAIT cell activation, with several analogues exhibiting comparable activity to 5-OP-RU. Docking studies with the 5-OP-RU