Structural and Conformational Studies on Carboxamides of 5,6-Diaminouracils—Precursors of Biologically Active Xanthine Derivatives
作者:Daniel Marx、Gregor Schnakenburg、Stefan Grimme、Christa E. Müller
DOI:10.3390/molecules24112168
日期:——
8-Arylethynylxanthine derivatives are potent, selective adenosine A2A receptor antagonists, which represent (potential) therapeutics for Parkinson’s disease, Alzheimer’s dementia, and the immunotherapy of cancer. 6-Amino-5-amidouracil derivatives are important precursors for the synthesis of such xanthines. We noticed an unexpected duplication of NMR signals in many of these uracil derivatives. Here, we present
alkyl- and arylalkyl halogenides and with tetraacetylribofuranose regiospecifically to the corresponding 3-substituted-6-aminouracil derivatives 1–10. The reaction is catalyzed by AlCl3 or, with the exception of the ribose derivative, more effectively by iodine. The described newsynthesis offers the first general access to 3-substituted 6-aminouracils.
[EN] 3-SUBSTITUTED XANTHINE DERIVATIVES AS MRGPRX4 RECEPTOR MODULATORS<br/>[FR] DÉRIVÉS DE XANTHINE SUBSTITUÉS EN POSITION 3 UTILISÉS COMME MODULATEURS DU RÉCEPTEUR MRGPRX4
申请人:UNIV BONN RHEINISCHE FRIEDRICH WILHELMS
公开号:WO2022079245A1
公开(公告)日:2022-04-21
The invention relates to MRGPRX4 receptor agonists and antagonists useful for treating, alleviating and/or preventing diseases and disorders related to MRGPRX4 receptor function as well as pharmaceutical compositions comprising such compounds and methods for preparing such compounds. The invention is further directed to the use of these compounds, alone or in combination with other therapeutic agents, for alleviating, preventing and/or treating diseases and disorders, especially the use as wound healing medicaments and for the treatment of chronic pain and itch.
Multigram-Scale Syntheses, Stability, and Photoreactions of A<sub>2A</sub> Adenosine Receptor Antagonists with 8-Styrylxanthine Structure: Potential Drugs for Parkinson's Disease
作者:Jörg Hockemeyer、Joachim C. Burbiel、Christa E. Müller
DOI:10.1021/jo0358574
日期:2004.5.1
configuration exhibited a considerably lower A2A adenosine receptor affinity than their parent compounds. The dimerization product of MSX-2 was a moderately potent nonselective A1 and A2A antagonist (Ki(A1) = 273 nM, Ki (A2A) = 175 nM) while the dimer of the related compound KW-6002 was inactive at A1 and only weakly active at A2A adenosine receptors (Ki = 1.57 μM). The light sensitivity of 8-styrylxanthine