Discovery and SAR study of hydroxyacetophenone derivatives as potent, non-steroidal farnesoid X receptor (FXR) antagonists
摘要:
Compound 1 (IC50 = 35.2 +/- 7.2 mu M), a moderate FXR antagonist was discovered via high-throughput screening. Structure-activity relationship studies indicated that the shape and the lipophilicity of the substituents of the aromatic ring affect the activity dramatically, increasing the shape and the lipophilicity of the substituents of the aromatic ring enhances the potency of FXR antagonists. Especially, when the OH at C2 position of the aromatic ring was replaced by the OBn substituent (analog 2b), its activity could be improved to IC50 = 1.1 +/- 0.1 mu M. Besides, the length of the linker and the tetrazole structure are essential for retaining the activity. (C) 2014 Elsevier Ltd. All rights reserved.
Catalytic Decarboxylation/Carboxylation Platform for Accessing Isotopically Labeled Carboxylic Acids
作者:Andreu Tortajada、Yaya Duan、Basudev Sahoo、Fei Cong、Georgios Toupalas、Antoine Sallustrau、Olivier Loreau、Davide Audisio、Ruben Martin
DOI:10.1021/acscatal.9b01921
日期:2019.7.5
integrated catalytic decarboxylation/carboxylation for accessing isotopicallylabeled carboxylic acids with 13CO2 or 14CO2 is described. The method shows a wide scope under mild conditions, even in the context of late-stage functionalization, and does not require stoichiometric organometallics, thus complementing existing carbon-labeling techniques en route to carboxylic acids.
描述了用于访问具有13 CO 2或14 CO 2的同位素标记的羧酸的集成催化脱羧/羧化反应。该方法在温和条件下显示了宽泛的范围,即使在后期功能化的情况下也是如此,并且不需要化学计量的有机金属,因此可以补充现有的碳标记技术(在羧酸生产过程中)。
Synthetic and Structure/Activity Studies on Acid-Substituted 2-Arylphenols: Discovery of 2-[2-Propyl-3-[3-[2-ethyl-4-(4-fluorophenyl)-5-hydroxyphenoxy]- propoxy]phenoxy]benzoic Acid, a High-Affinity Leukotriene B4 Receptor Antagonist
作者:J. Scott Sawyer、Nicholas J. Bach、S. Richard Baker、Ronald F. Baldwin、Peter S. Borromeo、Sandra L. Cockerham、Jerome H. Fleisch、Paul Floreancig、Larry L. Froelich
DOI:10.1021/jm00022a006
日期:1995.10
Structural derivatives of LY255283 have been studied as receptor antagonists of leukotriene B-4. Substitution of the 2-hydroxyacetophenone subunit of 1 (LY255283) with a 2-arylphenol group provided entry into several new series that feature various mono- and diacidic core functionality. These new analogues, the subject of a broad structure-activity investigation, displayed significantly increased in vitro and in vivo activity as receptor antagonists of LTB(4). A series of diaryl ether carboxylic acids demonstrated especially interesting activity and led to the discovery of compound 43b, 2-[2-propyl-3-[3-[2-ethyl-4-(4-fluorophenyl)-5-hydroxyphenoxy]- propoxy]phenoxy]benzoic acid (LY293111), a 2-arylphenol-substituted diaryl ether carboxylic acid which displayed potent binding to human neutrophils (IC50 = 17 +/- 14.6 nM) and guinea pig lung membranes (IC50 6.6 +/- 0.71 nM), inhibition of LTB(4)-induced expression of the CD11b/CD18 receptor on human neutrophils (IC50 - 3.3 +/- 0.81 nM), and inhibition of LTB(4)-induced contraction of guinea pig lung parenchyma (pK(B) = 8.7 +/- 0.16). In vivo, 43b demonstrated potent activity in inhibiting LTB(4)-induced airway obstruction in the guinea pig when dosed by the oral (ED(50) = 0.40 mg/kg) or intravenous (ED(50) = 0.014 mg/kg) routes. A specific LTB(4) receptor antagonist, 43b had little effect on inhibiting contractions of guinea pig lung parenchyma induced by leukotriene D-4 (LTD(4)), histamine, carbachol, or U46619. Compound 43b has been chosen as a clinical candidate and is currently in phase I studies for a variety of inflammatory diseases.
o-Phenylphenols: potent and orally active leukotriene B4 receptor antagonists
作者:Michael J. Sofia、Paul Floreancig、Nicholas J. Bach、S. Richard Baker、Sandra L. Cockerham、Jerome H. Fleisch、Larry L. Froelich、William T. Jackson、Philip Marder
DOI:10.1021/jm00076a029
日期:1993.11
1,2,4-trioxygenated benzene derivatives useful as a leukotriene antagonists