Cu(I)-Catalysis of One-Pot Synthesis of Some Novel Regioselective Isoxazole-Benzimidazole Hybrids and Their In Vitro Anti-Cancer Evaluation
作者:B. Ashok Kumar、V. Shanmukha Kumar Jagarlapudib
DOI:10.1134/s1070363219120296
日期:2019.12
Regioselective synthesis of some novel isoxazole-benzimidazole hybrids in high yields via Cu(I)-catalyzed tandem one-pot reaction of aromatic aldehydes with 1-prop-2-ynylbenzimidazole is developed. Structures of the synthesized compounds are confirmed by NMR and mass spectra. All the synthesized compounds have been tested for their in vitro anticancer activity against three human cancer cell lines
Synthesis of 3-aryl-4, 5-dihydro-5-hydroxy-1,2-oxazoles by reaction of substituted benzonitrile oxides with the enolate ion of acetaldehyde
作者:L. Di Nunno、L. Di Nunno、A. Scilimati
DOI:10.1016/s0040-4020(01)86800-9
日期:1987.1
By reaction of substituted benzonitrile oxides with the enolateion of acetaldehyde (quantitatively generated by the known cycloreversion of THF in the presence of n-butyllithium) a number of 3-aryl-4,5-dihydro-5-hydroxy-1, 2-oxazoles (previously unknown or, in two cases, only synthesized by different procedures) have been isolated in high yields. Treatment of such hydroxyisoxazolines with some common
3-Aryl-5-vinyl-2-isoxazolines and 3-Aryl-5-vinylisoxazoles from Aryl Nitrile Oxides and Methyl Vinyl Ketone Lithium Enolate: Reaction Limits and Synthetic Utility Exploitation
were synthesized by reacting aryl nitrile oxides with the lithiumenolate of methyl vinyl ketone (MVK) at –78 °C. Fair to good yields are obtained in the case of aryl nitrile oxides bearing electron-withdrawing groups on the aryl moiety or less bulky groups. Conversely, lower yields or no reaction was observed in the presence of hindered aryl nitrile oxides. Such a behavior was confirmed by ab initio
Functionalized diarylisoxazoles inhibitors of ciclooxygenase
申请人:Scilimati Antonio
公开号:US20090181970A1
公开(公告)日:2009-07-16
The present invention refers to isoxazole derivatives, in particular diarylisoxazole derivatives inhibitors of cyclooxygenase (COX), in particular cyclooxygenase-1 (COX-1), to their pharmaceutical compositions, the process for their preparation and their use for the chemoprevention and treatment of inflammatory syndromes and in the prevention and treatment of carcinomas, in particular intestinal, ovarian and cutaneous carcinomas, in the treatment of pain syndromes, in particular after surgery, and in the cardiovascular field as antithrombotics/vasoprotectives/cardioprotectives.
One-Pot Synthesis of 3-Substituted Isoxazoles from Phenyl Vinylic Selenide
作者:Shou-Ri Sheng、Xiao-Ling Liu、Qu Xu、Cai-Sheng Song
DOI:10.1055/s-2003-44354
日期:——
Phenylvinylicselenide was adopted for 1,3-Bipolar cycloaddition to nitrile oxides and subsequent oxidation-elimination furnished 3-substituted isoxazoles with good yields in a one-pot, two-step transformation.