Imidazo[1,2-c]quinazolines with lipid peroxidation inhibitory effect
摘要:
A series of imidazo[1,2-c]quinazolines of different lipophilic character was prepared. According to their antioxidant (cyclic voltammetry) properties they all should be potent inhibitors of lipid peroxidation. Under the given circumstances (NADPH-induced lipid peroxidation in rat brain microsomes and Fe(2+)-induced lipid peroxidation in rat brain homogenate), however, their lipid peroxidation inhibitory activity was strongly dependent on their lipophilicity. (C) Elsevier, Paris.
Substituted cinnamamide compounds and analogs, methods of making such compounds, pharmaceutical compositions and medicaments comprising such compounds, and methods of using such compounds to treat, prevent or ameliorate cancer are provided.
Efficient ligand-mediated ullmann coupling of anilnies and azoles
申请人:——
公开号:US20020099225A1
公开(公告)日:2002-07-25
The present invention provides of method of preparing phenyl-substituted azoles. This method uses an efficient ligand-accelerated Ullmann coupling reaction of anilines with azoles. The coupling products are useful for preparing factor Xa inhibitors.
2,5-DIAZACYCLOPENTADIENYUDENE: A STANDARD CARBENE OR A HIGHLY REACTIVE DIRADICAL ?
作者:Núria Bru、Jaume Vilarrasa
DOI:10.1246/cl.1980.1489
日期:1980.12.5
2,5-Diazacyclopentadienylidene (2H-imidazolylidene), generated either by photolysis or thermolysis from 2-diazo-2H-imidazole, reacts with benzene derivatives to give mainly a mixture of o-, m-, and p-substituted 2-phenylimidazoles. The carbene shows a strong diradical character, in sharp contrast with the well-known behavior of cyclopentadienylidene.
Electrooptic chromophores with large optical birefringence for applications at high speed and short wavelengths
申请人:McGinniss D. Vincent
公开号:US20060106262A1
公开(公告)日:2006-05-18
Disclosed is a series of materials, which exhibit large birefringence under the influence of an applied electric field. These materials are capable of switching this large birefringence with a characteristic time on the order of 1 microsecond or less. In addition, these materials have good optical loss at this wavelength, and are stable under irradiation. These materials are suitable for fabrication of optical devices such a variable optical attenuators, switches, and modulators that respond in these time frames or slower. These materials are also suitable for use across a wide range of wavelengths. As a second component of this invention, some of these novel materials exhibit these desired optical properties (large birefringence, low loss, stability under illumination) at wavelengths as short as about 400 nm. These materials are suitable for fabrication of optical devices operating at or about 405 nm, where conventional EO materials strongly absorb and/or quickly degrade.
Reactivity of Hydroxy and Amino Derivatives of 2-Phenyl-1<i>H</i>-imidazoline and 2-Phenyl-1<i>H</i>-imidazole toward Isocyanates: Synthesis of Appropriate Carbamates and Ureas
l)‐1H‐imidazoline using diethylamine in acetone. Six carbamates derived from this imidazoline were then prepared using 1.1 equiv of substituted phenyl isocyanates (substituents are H, 4‐CH3, 4‐OCH3, 4‐NO2, 4‐CN, and 3‐CF3). Finally, two carbamates were prepared from 2‐(4‐hydroxyphenyl)‐1H‐imidazole (substituents are 4‐NO2 and 4‐CN). No reactivity to imidazole ring was observed in this case. Eight derivatives