Design, synthesis and in vitro PDE4 inhibition activity of certain quinazolinone derivatives for treatment of asthma
摘要:
In this study, a novel series of quinazolinone derivatives analogue to nitraquazone structure were synthesized. The compounds tested for their inhibitory activity against phosphodiesterase 4B revealed that compound 6d shows promising inhibitory activity comparable to that of Rolipram, whereas compounds 6a and 6c exhibited moderate inhibitory activity.
The reaction of isatoic anhydride, amines, and aldehydes in the presence of a microporous zeolite gave 2,3-dihydroquinazolin-4(1H)-one derivatives with good to excellent yield. The yield depends on the structure of the aldehyde and/or amine compound.
A Greener Protocol for Accessing 2,3-Dihydro/spiroquinazolin-4(1H)-ones: Natural Acid-SDS Catalyzed Three-Component Reaction
作者:Prem Chauhan、Rashmi Sharma、Anand Pandey
DOI:10.1055/s-0032-1317014
日期:——
A novel green and energy-efficient synthesis of 2,3-dihydro/spiroquinazolin-4(1H)-ones via three-component cyclo-condensation reaction involving isatoic anhydride, amines and aldehydes/ketones utilizing recyclable tartaric acid-SDS catalyst system has been achieved. With simple requirements of mechanical stirring or mechanochemical activation at room temperature and one of the shortest reported times as of yet, it is a significant improvement on previously described methods for the synthesis of such compounds. Moreover the catalyst system can also be efficiently applied in large-scale reactions which indicates the potential for applications in industry.
Design, synthesis and in vitro PDE4 inhibition activity of certain quinazolinone derivatives for treatment of asthma
作者:Afaf K. Elansary、Hanan H. Kadry、Eman M. Ahmed、Amr Sayed Motawi Sonousi
DOI:10.1007/s00044-011-9846-3
日期:2012.11
In this study, a novel series of quinazolinone derivatives analogue to nitraquazone structure were synthesized. The compounds tested for their inhibitory activity against phosphodiesterase 4B revealed that compound 6d shows promising inhibitory activity comparable to that of Rolipram, whereas compounds 6a and 6c exhibited moderate inhibitory activity.