Fluorine-Directed β-Galactosylation: Chemical Glycosylation Development by Molecular Editing
作者:Estelle Durantie、Christoph Bucher、Ryan Gilmour
DOI:10.1002/chem.201200468
日期:2012.6.25
Validation of the 2‐fluoro substituent as an inert steering group to control chemicalglycosylation is presented. A molecularediting study has revealed that the exceptional levels of diastereocontrol in glycosylation processes by using 2‐fluoro‐3,4,6‐tri‐O‐benzyl glucopyranosyl trichloroacetimidate (TCA) scaffolds are a consequence of the 2R,3S,4S stereotriad. This study has also revealed that epimerization
Gb<sub>3</sub>Glycosphingolipids with Fluorescent Oligoene Fatty Acids: Synthesis and Phase Behavior in Model Membranes
作者:Lukas J. Patalag、Jeremias Sibold、Ole M. Schütte、Claudia Steinem、Daniel B. Werz
DOI:10.1002/cbic.201700414
日期:2017.11.2
Get in place! Fluorescent labels can alter the phasebehavior of lipids considerably. The synthetic route to fattyacid‐labeled Gb3 derivatives that partition in the liquid‐disordered phase, even after binding of Shiga toxin B subunits, is described.
Total Synthesis and Proof of Structure of a Human Breast Tumor (Globo-H) Antigen
作者:Tae Kyo Park、In Jong Kim、Shuanghua Hu、Mark T. Bilodeau、John T. Randolph、Ohyun Kwon、Samuel J. Danishefsky
DOI:10.1021/ja962048b
日期:1996.1.1
The totalsynthesis of the Hakomori MBr1 antigen, heavily expressed on humanbreasttumors, is related. The construction involved the assembly of four glycals: (17 (twice), 18, 20, and 26) and an l-fucose derivative, 34. The sensitivity of the stereochemistry of sulfonamido galactosylation by a terminal galactose ring as a function of the state of protection status of its C4 alcohol was exploited in
Syntheses and biological activities of KRN7000 analogues having aromatic residues in the acyl and backbone chains with varying stereochemistry
作者:Jeong-Ju Park、Ji Hyung Lee、Kyung-Chang Seo、Gabriel Bricard、Manjunatha M. Venkataswamy、Steven A. Porcelli、Sung-Kee Chung
DOI:10.1016/j.bmcl.2009.12.103
日期:2010.2
effort to understand the structure–activity relationships, we have carried out syntheses of 26 new KRN7000 analogues incorporating aromatic residues in either or both side chains. Structural variations of the phytosphingosine moiety also include varying stereochemistry at C3 and C4, and 4-deoxy and 3,4-dideoxy versions. Their biological activities are described.
A divergent approach to the synthesis of iGb3 sugar and lipid analogues via a lactosyl 2-azido-sphingosine intermediate
作者:Janice M. H. Cheng、Emma M. Dangerfield、Mattie S. M. Timmer、Bridget L. Stocker
DOI:10.1039/c4ob00241e
日期:——
Isoglobotrihexosylceramide (iGb3, 1) is an immunomodulatory glycolipid that binds to CD1d and is presented to the T-cell receptor (TCR) of invariant natural killer T (iNKT) cells.