Presented by CD1d protein, KRN7000, a potent synthetic cc-galactosylceramide, is known to stimulate the iNKT cells to produce different bioactive cytokines. Six new KRN7000 analogues, in which the amide bond in KRN7000 is replaced with O, NH, or ester groups incorporating variation of the acyl chain, or possessing an additional four-atom linker between the galactose and phytosphingosine moiety, were designed and synthesized. The synthetic compounds were evaluated for their ability to stimulate cytokine release and the preliminary structure activity relationships were discussed. The synthetic strategy will benefit the construction of more KRN7000 derivatives, which may contribute to cytokine profile bias. (C) 2013 Elsevier Ltd. All rights reserved.
Non-Imidazole Histamine H3 Ligands. Part VI. Synthesis and Preliminary Pharmacological Investigation of Thiazole-Type Histamine H3-Receptor Antagonists with Lacking a Nitrogen Nucleus in the Side Chain
pharmacological in vitro characterization of series of potent histamineH3-receptor non-imidazole antagonists belonging to the class of substituted 2-thiazol-4-n-propylpiperazines. A lead compound 1 of this family was a derivative carrying the ethylaminomethylpropyl chain. Methods: With the aim of increasing lipophilicity, that will help the ligands to cross the blood-brain barrier, we synthesized a series of
Pronounced anti-proliferative activity and tumor cell selectivity of 5-alkyl-2-amino-3-methylcarboxylate thiophenes
作者:Joice Thomas、Alenka Jecic、Els Vanstreels、Lizette van Berckelaer、Romeo Romagnoli、Wim Dehaen、Sandra Liekens、Jan Balzarini
DOI:10.1016/j.ejmech.2017.03.044
日期:2017.5
mid-nanomolar range with 500- to 1000-fold tumorcellselectivity. The compounds preferentially inhibited the proliferation of T-lymphoma CEM and Molt/4, prostate PC-3, kidney Caki-1 and hepatoma Huh-7 tumorcells, but were virtually inactive against other tumorcell lines including B-lymphoma Raji and cervix carcinoma HeLa cells. The novel prototype drug 3j (containing a 5-heptyl chain) elicited a cytotoxic
The present invention provides a peptide, peptidomimetic or amino acid derivative having a net positive charge of at least +2 and incorporating a disubstituted β amino acid, each of the substituting groups in the β amino acid, which may be the same or different, comprises at least (7) non-hydrogen atoms, is lipophilic and has at least one cyclic group, one or more cyclic groups within a substituting group may be linked or fused to one or more cyclic groups within the other substituting group and where cyclic groups are fused in this way the combined total number of non-hydrogen atoms for the two substituting groups is at least (12), for use as a cytolytic therapeutic agent; as well as non therapeutic uses of these molecules and certain defined novel compounds from within this definition.
Potent inhibitors of fatty acid amide hydrolase (FAAH) are constructed having Ki's below 200 pM and activities 102-103 times more potent than the corresponding trifluoromethyl ketones. The potent inhibitors combine several features, viz.: 1.) an &agr;-keto heterocylic head group; 2.) a hydrocarbon linkage unit employing an optimal C12-C8 chain length; and 3.) a phenyl or other &pgr;-unsaturation corresponding to the arachidonyl &Dgr;8.9/&Dgr;11.12 and/or oleyl &Dgr;9.10 positions. A preferred &agr;-keto heterocylic head group is &agr;-keto N4 oxazolopyridine, with incorporation of a second weakly basic nitrogen. Fatty acid amide hydrolase is an enzyme responsible for the degradation of oleamide (an endogenous sleep-inducing lipid) and anandamide (an endogenous ligand for cannabinoid receptors).
[EN] GLYCOPEPTIDE ANTIBIOTIC DERIVATIVES<br/>[FR] DERIVES D'ANTIBIOTIQUES A BASE DE GLYCOPEPTIDES
申请人:ELI LILLY AND COMPANY
公开号:WO1996030401A1
公开(公告)日:1996-10-03
(EN) The present invention provides glycopeptide antibiotic derivative compounds. These derivative compounds possess antibacterial activity against a wide variety of bacteria, including activity against vancomycin-resistant isolates. Methods of making and using these glycopeptide antibiotic derivative compounds are also provided.(FR) La présente invention se rapporte à des composés dérivés d'antibiotiques à base de glycopeptides. Ces composés dérivés possèdent une activité antibactérienne contre une large variété de bactéries, y compris une activité contre des isolats résistant à la vancomycine. Les méthodes de fabrication et d'utilisation de ces composés dérivés d'antibiotiques à base de glycopeptides sont également décrites.