Microwave-promoted one-pot three-component synthesis of 2,3-dihydroquinazolin-4(1H)-ones catalyzed by heteropolyanion-based ionic liquids under solvent-free conditions
3-dihydroquinazoline-4(1H)-one derivatives have been synthesized via one-pot three-component reaction using isatoic anhydrides, amines and aldehydes (or ketones) catalyzed by heteropolyanion-based ionic liquids under microwave-promoted conditions. The practical protocol was found to tolerate a wide range of substrates with different functional groups. Moderate to excellent yields, solvent-free media and operational
InBr3-catalyzed approach to synthesize 2,3-dihydroquinazolin-4(1H)-onederivatives (3a–3aa) has been developed. Notably, all the products were isolated by recrystallization and the reaction is accessible on a gram scale. Moreover, the reactions only require 10–60 min. All the synthesized compounds were evaluated for their in vitro anticanceractivity against four human cancer cell lines. GRAPHICAL ABSTRACT
Crosslinked chitosan nanoparticle-anchored magnetic multi-wall carbon nanotubes: a bio-nanoreactor with extremely high activity toward click-multi-component reactions
have designed a procedure for the synthesis of a bio-nanoreactor catalyst, crosslinked chitosan nanoparticle-anchored magnetic multi-wall carbon nanotubes (CS NPs/MWCNT@Fe3O4), via an in situ ionotropic gelation method. The synthesized robust nanoreactor was fully characterized. Moreover, the catalytic activity was investigated towards the click-based multi-component reactions for the synthesis of 2
在本研究中,我们设计了一种通过原位电离凝胶法合成生物纳米反应器催化剂,交联壳聚糖纳米粒子锚定的磁性多壁碳纳米管(CS NPs / MWCNT @ Fe 3 O 4)的程序。。合成的坚固的纳米反应器已得到充分表征。此外,研究了催化活性对基于点击的多组分反应合成2,3-二氢喹唑啉-4(1 H)-,三取代的咪唑和1,2,3-三唑在绿色介质中。由于可以通过施加外部磁场来回收纳米催化剂,这使得无需过滤即可轻松分离,并且可以在不损失其显着活性的情况下进行多次回收,因此在可重复使用的催化方面显示出令人钦佩的潜力。
2,3-dihydroquinazolin-4(1H)-one derivatives for use in the treatment of viral infections
申请人:COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX
ENERGIES ALTERNATIVES
公开号:EP2722047A1
公开(公告)日:2014-04-23
Use of 2,3-dihydroquinazolin-4(1H)-one cyclic derivatives of formula (I)
for the treatment of infection with viruses entering cells by endocytosis, especially filovirus such as Ebolavirus
NEW COMPOUNDS HAVING A PROTECTIVE ACTIVITY AGAINST TOXINS WITH INTRACELLULAR ACTIVITY
申请人:COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
公开号:US20150291568A1
公开(公告)日:2015-10-15
The present invention concerns a new family of 2,3-dihydroquinazolin-4(1H)-one compounds of general formula (I), and the use thereof as inhibitors of the toxic effects of toxins with intracellular activity, such as ricin or Shiga toxin, for example, using retrograde transport to intoxicate cells.