21531-45-3Relevant academic research and scientific papers
A Potent Mimetic of the Siglec-8 Ligand 6’-Sulfo-Sialyl Lewisx
Conti, Gabriele,Cramer, Jonathan,Ernst, Beat,Girardi, Benedetta,Jiang, Xiaohua,Kokot, Maja,Kroezen, Blijke S.,Luisoni, Enrico,Müller, Jennifer,Rabbani, Said,Ricklin, Daniel,Schwardt, Oliver
, p. 1706 - 1719 (2020/09/02)
Siglecs are members of the immunoglobulin gene family containing sialic acid binding N-terminal domains. Among them, Siglec-8 is expressed on various cell types of the immune system such as eosinophils, mast cells and weakly on basophils. Cross-linking of Siglec-8 with monoclonal antibodies triggers apoptosis in eosinophils and inhibits degranulation of mast cells, making Siglec-8 a promising target for the treatment of eosinophil- and mast cell-associated diseases such as asthma. The tetrasaccharide 6’-sulfo-sialyl Lewisx has been identified as a specific Siglec-8 ligand in glycan array screening. Here, we describe an extended study enlightening the pharmacophores of 6’-sulfo-sialyl Lewisx and the successful development of a high-affinity mimetic. Retaining the neuraminic acid core, the introduction of a carbocyclic mimetic of the Gal moiety and a sulfonamide substituent in the 9-position gave a 20-fold improved binding affinity. Finally, the residence time, which usually is the Achilles tendon of carbohydrate/lectin interactions, could be improved.
Molecular Hybridization of Potent and Selective γ-Hydroxybutyric Acid (GHB) Ligands: Design, Synthesis, Binding Studies, and Molecular Modeling of Novel 3-Hydroxycyclopent-1-enecarboxylic Acid (HOCPCA) and trans-γ-Hydroxycrotonic Acid (T-HCA) Analogs
Krall, Jacob,Jensen, Claus Hatt,Bavo, Francesco,Falk-Petersen, Christina Birkedahl,Haugaard, Anne St?hr,Vogensen, Stine Byskov,Tian, Yongsong,Nittegaard-Nielsen, Mia,Sigurdardóttir, Sara Bj?rk,Kehler, Jan,Kongstad, Kenneth Thermann,Gloriam, David E.,Clausen, Rasmus Pr?torius,Harps?e, Kasper,Wellendorph, Petrine,Fr?lund, Bente
, p. 9022 - 9039 (2017/11/14)
γ-Hydroxybutyric acid (GHB) is a neuroactive substance with specific high-affinity binding sites. To facilitate target identification and ligand optimization, we herein report a comprehensive structure-affinity relationship study for novel ligands targeting these binding sites. A molecular hybridization strategy was used based on the conformationally restricted 3-hydroxycyclopent-1-enecarboxylic acid (HOCPCA) and the linear GHB analog trans-4-hydroxycrotonic acid (T-HCA). In general, all structural modifications performed on HOCPCA led to reduced affinity. In contrast, introduction of diaromatic substituents into the 4-position of T-HCA led to high-affinity analogs (medium nanomolar Ki) for the GHB high-affinity binding sites as the most high-affinity analogs reported to date. The SAR data formed the basis for a three-dimensional pharmacophore model for GHB ligands, which identified molecular features important for high-affinity binding, with high predictive validity. These findings will be valuable in the further processes of both target characterization and ligand identification for the high-affinity GHB binding sites.
NOVEL COMPOUNDS
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Page/Page column 31, (2015/02/02)
Novel rapamycin analogues and methods for their production with FKBP and/or MIP inhibitory activity with reduced mTOR inhibitory activity with therapeutic potential e.g. as bacterial virulence inhibitors.
METHOD FOR THE PREPARATION OF ENANTIOMER FORMS OF CIS-CONFIGURED 3-HYDROXYCYCLOHEXANE CARBOXYLIC ACID DERIVATIVES USING HYDROLASES
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Page/Page column 18, (2008/06/13)
The present invention relates to a process for preparing chiral non-racemic cis-configured cyclohexanols or cyclohexanol derivatives of the formula (I) Cis-configured hydroxyl-cyclohexane carboxylic acid derivatives of formula (I) are central building blo
Biosynthesis of ω-cyclohexyl fatty acids in Alicyclobacillus acidocaldarius: The stereochemistry of the initial 1,4-conjugate elimination
Handa, Sandeep,Floss, Heinz G.
, p. 153 - 154 (2007/10/03)
The 1,4-conjugate elimination of H2O from shikimic acid 3, the initial step in the biosynthesis of ω-cyclohexyl fatty acids by the bacterium Alicyclobacillus acidocaldarius, has been shown to occur with an overall anti stereochemistry via loss
Enzymatic in vitro Reduction of Ketones. Part 13. Horse Liver Alcohol Dehydrogenase (HLAD) as a Tool for the Synthesis of Enantiomerically Pure Alkyl 3-oxo- and 3-hydroxycyclohexanecarboxylates.
Willaert, J. J.,Lemiere, G. L.,Dommisse, R. A.,Lepoivre, J. A.,Alderweireldt, F. C.
, p. 2401 - 2423 (2007/10/02)
Enantiomerically pure alkyl 3-oxocyclohexanecarboxylates and the corresponding alcohols have been prepared using HLAD as a suitable catalyst.Kinetic and thermodynamic parameters for the enzymatic reductions are given.The enantiomeric purity and the absolute configuration of the reaction products are determined.The alcohol moiety (methyl, isopropyl or pentyl) of the ester group influences both the steric course and the kinetics of the reduction.Side reactions of the substrate with the reaction medium can be avoided by an appropriate choice of the reaction conditions.
