Synthesis and biological activity of novel barbituric and thiobarbituric acid derivatives against non-alcoholic fatty liver disease
摘要:
Forty-four barbituric acid or thiobarbituric acid derivatives were synthesized and evaluated for their effects on adipogenesis of 3T3-L1 adipocytes by measuring the expression of adiponectin in vitro. Four compounds (3a, 30, 3s, 4t) were found to increase the expression of adiponectin and lower the leptin level in 31341 adipocytes at respective concentration of 10 mu M. Among them, 3s showed the most efficacious. Oral administration of 3s effectively reduced body weight, liver weight, and visceral fat and regulated serum levels of biochemical markers in the high-fat/diet-induced Wistar rats. Histopathological evaluation of liver sections by Oil Red O and H&E staining confirmed 3s as a potent, orally active molecule for reducing fat deposition against non-alcoholic fatty liver disease. (C) 2011 Elsevier Masson SAS. All rights reserved.
Synthesis and Biological Evaluation of Novel 5-Benzylidenethiazolidine-2,4-dione Derivatives for the Treatment of Inflammatory Diseases
摘要:
Twenty-two compounds based on thiazolidine-2,4-dione moiety were synthesized and evaluated for the inhibitory potency on the production of nitric oxide (NO), inducible nitric oxide synthase (iNOS) activity, and the generation of prostaglandin E-2 (PEG(2)). (Z)-N-(3-Chlorophenyl)-2-(4-((2,4-dioxothiazolidin-5-ylidene) methyl) phenoxy) acetamide (3I), superior to the commercial anti-inflammatory drug indomethacin, significantly inhibited iNOS activity (IC50 = 8.66 mu M), iNOS-mediated NO, and cyclooxnenase (COX)-2-derived PGE(2) production (IC50 = 4.16 and 23.55 mu M, respectively) on lipopolysaccharide (LPS)-induced. RAW 264.7 cells. Docking study revealed that 3I was perfectly docking into the active site of murine iNOS and suppressed the expression of iNOS protein as evidenced by Western blot analysis. At the dose of 50 mg/kg, oral administration of 3I possessed protective properties in both carrageenan-induced paw edema and adjuvant-induced arthritis rat models.
Parallel Solution-Phase Synthesis and General Biological Activity of a Uridine Antibiotic Analog Library
作者:Omar Moukha-chafiq、Robert C. Reynolds
DOI:10.1021/co4001452
日期:2014.5.12
coupling of the amino terminus of d-phenylalanine methylester to the free 5′-carboxylic acid moiety of 33 followed by sodium hydroxide treatment led to carboxylic acid analog 77. Hydrolysis of this material gave analog 78. The intermediate 77 served as the precursor for the preparation of novel dipeptidyl uridine analogs 79–99 through peptide coupling reactions to diverse amine reactants. None of the described
[EN] ROSIGLITAZONE DERIVATIVES AS ANTIDIABETIC AGENTS<br/>[FR] DERIVES DE ROSIGLITAZONE UTILES COMME AGENTS ANTIDIABETIQUES
申请人:RANBAXY LAB LTD
公开号:WO2004089945A1
公开(公告)日:2004-10-21
The present invention relates to rosiglitazone derivatives of Formula VI and their pharmaceutically acceptable salts. The invention concerns methods for the preparation of such derivatives, pharmaceutical compositions comprising the same and methods of treatment comprising administration of such compositions. These derivatives are putative metabolites of rosiglitazone.
Bi-functional complexes and methods for making and using such complexes
申请人:Gouliaev Alex Haahr
公开号:US11225655B2
公开(公告)日:2022-01-18
The present invention is directed to a method for the synthesis of a bi-functional complex comprising a molecule part and an identifier oligonucleotide part identifying the molecule part. A part of the synthesis method according to the present invention is preferably conducted in one or more organic solvents when a nascent bi-functional complex comprising an optionally protected tag or oligonucleotide identifier is linked to a solid support, and another part of the synthesis method is preferably conducted under conditions suitable for enzymatic addition of an oligonucleotide tag to a nascent bi-functional complex in solution.
Synthesis of novel 1-alkyl-8-substituted-3-(3-methoxypropyl) xanthines as putative A2B receptor antagonists
作者:María Isabel Nieto、María Carmen Balo、José Brea、Olga Caamaño、María Isabel Cadavid、Franco Fernández、Xerardo García Mera、Carmen López、José Enrique Rodríguez-Borges
DOI:10.1016/j.bmc.2009.03.029
日期:2009.5
In order to identify a high-affinity, selective antagonist for the A(2B) subtype adenosine receptor, more than 40 1,8-disubstituted-3-(3-methoxypropyl) xanthines were prepared and evaluated for their binding affinity at recombinant human adenosine receptors, mainly of the A(2A) and A(2B) subtypes. Some of the 1-ethyl-3-(3-methoxypropyl)-8-aryl substituted derivatives 15(a-m) showed moderate-to-high affinity at human A(2B) receptors, with compound 15d showing A(2B) selectivity over the other A receptors assayed (A(1), A(2A), A(3)) of 34-fold or over. (C) 2009 Elsevier Ltd. All rights reserved.
Parallel Solution-Phase Synthesis of an Adenosine Antibiotic Analog Library
作者:Omar Moukha-chafiq、Robert C. Reynolds
DOI:10.1021/co300127z
日期:2013.3.11
A library of eighty one adenosine antibiotic analogs was prepared under the Pilot Scale Library Program of the NIH Roadmap initiative from 5'-amino-5'-deoxy-2',3'-O-isopropylidene-adenosine 3. Diverse aldehyde, sulfonyl chloride and carboxylic acid reactant sets were condensed to 3, in solution-phase fashion, leading after acid-mediated hydrolysis to the targeted compounds in good yields and high purity. No marked antituberculosis or anticancer activity was noted on preliminary cellular testing, but these nucleoside analogs should be useful candidates for other types of biological activity.