Synthesis of 5-trifluoromethyl-2-sulfonylpyridine PPARβ/δ antagonists: Effects on the affinity and selectivity towards PPARβ/δ
摘要:
The covalent modification of peroxisome-proliferator activated receptor beta/delta (PPAR beta/delta) is part of the mode of action of 5-trifluoromethyl-2-sulfonylpyridine PPAR beta/delta antagonists such as GSK3787 and CC618. Herein, the synthesis and in vitro biological evaluation of a range of structural analogues of the two antagonists are reported. The new ligands demonstrate that an improvement in the selectivity of 5-trifluoromethyl-2-sulfonylpyridine antagonists towards PPAR beta/delta is achievable at the expense of their immediate affinity for PPAR beta/delta. However, their putatively covalent and irreversible mode of action may ensure their efficacy over time, as observed in time-resolved fluorescence resonance energy transfer (TR-FRET)-based ligand displacement assays. (c) 2015 Elsevier Ltd. All rights reserved.
Phenyliodine diacetate-mediated oxidative cleavage of cyclobutanols leading to γ-hydroxy ketones
摘要:
Oxidative cleavage of cyclobutanols using PIDA, which leads to efficient entry of gamma-hydroxy ketones, is described. When using 2-substituted cyclobutanols, gamma-substituted gamma-hydroxy ketones are obtained through regioselective C-C bond cleavage. (C) 2010 Elsevier Ltd. All rights reserved.
Sequential multicomponent catalytic synthesis of pyrrole-3-carboxaldehydes: evaluation of antibacterial and antifungal activities along with docking studies
作者:Nisar A. Mir、Panduga Ramaraju、Satheeshvarma Vanaparthi、Sachin Choudhary、Rajnish P. Singh、Preetika Sharma、Rajni Kant、Rajpal Singh、Murugesan Sankaranarayanan、Indresh Kumar
DOI:10.1039/d0nj03575k
日期:——
A sequential multicomponent method is developed to access highly substituted N-arylpyrrole-3-carbaldehydes and tested for antibacterial and antifungal activities against bacterial strains.
Preparation of aromatic γ-hydroxyketones by means of Heck coupling of aryl halides and 2,3-dihydrofuran, catalyzed by a palladium(<scp>ii</scp>) glycine complex under microwave irradiation
作者:Juan C. Jiménez-Cruz、Ramón Guzmán-Mejía、Eusebio Juaristi、Omar Sánchez-Antonio、Marco A. García-Revilla、J. Betzabe González-Campos、Judit Aviña-Verduzco
DOI:10.1039/d0nj02630a
日期:——
A series of aromatic γ-hydroxyketones were prepared by means of Heck coupling reaction of aryl halides and 2,3-dihydrofuran, catalyzed by PdCl2·Gly2 and under microwave irradiation. This synthetic transformation involves the formation of an aryl-dihydrofuranoic intermediate, followed by an unusual opening of the heterocycle promoted by a water molecule and the formation of the ketone carbonyl function
The covalent modification of peroxisome-proliferator activated receptor beta/delta (PPAR beta/delta) is part of the mode of action of 5-trifluoromethyl-2-sulfonylpyridine PPAR beta/delta antagonists such as GSK3787 and CC618. Herein, the synthesis and in vitro biological evaluation of a range of structural analogues of the two antagonists are reported. The new ligands demonstrate that an improvement in the selectivity of 5-trifluoromethyl-2-sulfonylpyridine antagonists towards PPAR beta/delta is achievable at the expense of their immediate affinity for PPAR beta/delta. However, their putatively covalent and irreversible mode of action may ensure their efficacy over time, as observed in time-resolved fluorescence resonance energy transfer (TR-FRET)-based ligand displacement assays. (c) 2015 Elsevier Ltd. All rights reserved.
Phenyliodine diacetate-mediated oxidative cleavage of cyclobutanols leading to γ-hydroxy ketones
作者:Hiromichi Fujioka、Hideyuki Komatsu、Akihito Miyoshi、Kenichi Murai、Yasuyuki Kita
DOI:10.1016/j.tetlet.2010.12.032
日期:2011.3
Oxidative cleavage of cyclobutanols using PIDA, which leads to efficient entry of gamma-hydroxy ketones, is described. When using 2-substituted cyclobutanols, gamma-substituted gamma-hydroxy ketones are obtained through regioselective C-C bond cleavage. (C) 2010 Elsevier Ltd. All rights reserved.