Discovery of non-electrophilic capsaicinoid-type TRPA1 ligands
摘要:
Replacement of the benzylamide motif of synthetic capsaicin (nonivamide, 1c) with a tetrazole moiety was detrimental for TRPV1 binding, but unexpectedly generated a potent and non-electrophilic TRPA1 agonist (4a). Spurred by this observation and by the relatively small number of non-covalent TRPA1 ligands reported so far, the benzylamide-to-tetrazole swap was investigated in the more lipophilic and powerful vanilloids olvanil (1d), rinvanil (1e), and phenylacetylrinvanil (1f). In all cases, the replacement was detrimental for TRPV1 binding, but a clear modulation of TRPA1 activity was observed. These observations show that the capsaicinoid pharmacophore displays orthogonal structure-activity relationships for TRPV1 and TRPA1 binding, and suggest the possibility of obtaining compounds with dual TRPV1/TRPA1 modulatory properties by exploration of the chemical space around the capsaicin motif. (C) 2015 Elsevier Ltd. All rights reserved.
摘要一系列新的半三明治(η6-对-cymene)钌(II)与噻吩-2-羧酸酰肼衍生物[Ru(η6-对-cymene)(Cl)(L)] [L = N' -(萘-1-基亚甲基)噻吩-2-碳酰肼(L1),N'-(蒽-9-基亚甲基)噻吩-2-碳酰肼(L2)和N'-(吡喃-1-基亚甲基)噻吩-2-合成了碳酰肼(L3)]。通过光谱(IR,UV-Vis,NMR和质谱)和元素分析对配体前体及其Ru(II)配合物(1-3)进行结构表征。钌(II)配合物1-3的分子结构通过单晶X射线衍射测定。所有配合物均用作催化剂,用于一锅三组分合成2,4,5-三取代的咪唑和5-取代的1H-四唑衍生物。催化研究优化了溶剂,温度和催化剂等参数。所述催化剂显示出对具有电子吸引子或电子给体取代基的广泛范围的芳族醛非常有效,并且尽管活性较低,但对于烷基醛观察到中等至高的活性。
Design and synthesis of low molecular weight compounds with complement inhibition activity
作者:Hoshang E. Master、Shabana I. Khan、Krishna A. Poojari
DOI:10.1016/j.bmc.2005.04.075
日期:2005.8
An attempt was made to synthesize a series of non-cytotoxic low molecular weight compounds of varying substitutions and functionalities having pharmacophore activity like carbonyl compounds, carboxylicacid and bioisosteres like tetrazole and phenyl acrylic acid. The in vitro assay of these analogues for the inhibition of complement activity revealed significant inhibitory activity for varying substituents
Novel ligands for the hisb10 zn2+ sites of the r-state insulin hexamer
申请人:——
公开号:US20030229120A1
公开(公告)日:2003-12-11
Novel ligands for the HisB10 Zn
2+
sites of the R-state insulin hexamer that are capable of prolonging the action of insulin preparations are disclosed.
揭示了能够延长胰岛素制剂作用的R-态胰岛素六聚体的HisB10 Zn2+位点的新配体。
Stabilised insulin compositions
申请人:Kaarsholm Christian Niels
公开号:US20050065066A1
公开(公告)日:2005-03-24
The present invention provides pharmaceutical compositions comprising insulin and novel ligands for the His
B10
Zn
2+
sites of the R-state insulin hexamer. The resulting preparations have improved physical and chemical stability.
[EN] PHARMACEUTICAL PREPARATIONS COMPRISING ACID-STABILISED INSULIN<br/>[FR] PREPARATIONS PHARMACEUTIQUES CONTENANT DE L'INSULINE STABILISEE D'UN POINT DE VUE ACIDE
申请人:NOVO NORDISK AS
公开号:WO2004080480A1
公开(公告)日:2004-09-23
Novel ligands for the HisB10 Zn2+ sites of the R-state insulin hexamer that are capable of prolonging the action of insulin preparations are disclosed.
揭示了能够延长胰岛素制剂作用的R态胰岛素六聚体的HisB10 Zn2+位点的新配体。
TiCl3 catalyzed one-pot protocol for the conversion of aldehydes into 5-substituted 1H-tetrazole
作者:Rakesh Ranjan Chakraborty、Pranab Ghosh
DOI:10.1016/j.tetlet.2018.08.050
日期:2018.10
An efficient protocol has been explored for the one-pot synthesis of tetrazole derivatives with wide functional group compatibility in moderate to very high yields starting from aliphatic and aromatic substituted aldehydes. The reaction proceeds via non-isolated oxime and nitrile intermediates. The structures of the products were confirmed by IR and NMR spectroscopy. A plausible reaction mechanism