Resveratrol ((E)-3,4',5-ti-ihydroxy-stilbene), a phytoalexin found in various plants, shows non-selective cyclooxygenase-1 (COX-1) and cyclooxygenase-2 (COX-2) inhibition. In order to find more selective COX inhibitors a series of bridged stilbene derivatives was synthesized and evaluated for their ability to inhibit both COX- 1 and COX-2 in vitro. The compounds showed a high rate of COX-1 inhibition with the most potent compounds exhibiting submicromolar IC50 values and high selectivity indices. A prediction model for COX-inhibiting activity was also developed using the classical LIE approach resulting in consistent docking data for our molecule sample. Phenyl substituted 1,2-dihydronaphthalene derivatives and 1H-indene derivatives therefore represent a novel class of highly selective COX-1 inhibitors and land promising candidates for in vivo studies. (c) 2007 Elsevier Ltd. All rights reserved.
Low-valent Niobium-mediated Synthesis of Indenes: Intramolecular Coupling Reaction of CF<sub>3</sub>Group with Alkene C–H Bond
作者:Kohei Fuchibe、Ken Mitomi、Takahiko Akiyama
DOI:10.1246/cl.2007.24
日期:2007.1
CF3 group of o-alkenyl-α,α,α-trifluorotoluenes underwent intramolecular coupling reaction with the alkene C–H bond under NbCl5/LiAlH4 system. Substituted indenes were obtained in good yields.