2473-93-0Relevant academic research and scientific papers
Oxidative Rearrangement of Isatins with Arylamines Using H2O2 as Oxidant: A Facile Synthesis of Quinazoline-2,4-diones and Evaluation of Their Antibacterial Activity
Shi, Guanghao,He, Xinwei,Shang, Yongjia,Yang, Cheng,Xiang, Liwei
, p. 1835 - 1843 (2017/09/06)
A green and highly efficient synthetic method for the synthesis of quinazoline-2,4-diones with hydrogen peroxide as the terminal oxidant has been developed. The reaction features the mild reaction conditions, broad substrate scope, metal-free catalysts, and sole byproduct water. A plausible mechanism for this process was proposed. Moreover, an antibacterial activity study was performed to evaluate the antimicrobial activities towards two Gram-negative bacterial strains (Escherichia coli, and Klebsiella pneumonia) and two Gram-positive bacterial strains (Staphylococcus epidermidis, and Staphylococcus aureus) using the Broth microdilution method.
Specific inhibitors of puromycin-sensitive aminopeptidase with a 3-(halogenated phenyl)-2,4(1H,3H)-quinazolinedione skeleton
Matsumoto, Yotaro,Noguchi-Yachide, Tomomi,Nakamura, Masaharu,Mita, Yusuke,Numadate, Akiyoshi,Hashimoto, Yuichi
, p. 1449 - 1463 (2013/08/23)
Specific puromycin-sensitive aminopeptidase (PSA) inhibitors with a 3-(halogenated phenyl)-2,4(1H,3H)-quinazolinedione skeleton were prepared and their structure-activity relationships were investigated. The nature (F, Cl or Br), number and position(s) of the halogen atom(s) introduced into the 3-phenyl group were concluded to be critical determinants of the inhibitory activity.
Allosteric inhibitors of hepatitis C virus NS5B polymerase thumb domain site II: Structure-based design and synthesis of new templates
Malancona, Savina,Donghi, Monica,Ferrara, Marco,Martin Hernando, Josè I.,Pompei, Marco,Pesci, Silvia,Ontoria, Jesus M.,Koch, Uwe,Rowley, Michael,Summa, Vincenzo
experimental part, p. 2836 - 2848 (2010/07/04)
Chronic hepatitis C virus (HCV) infections are a significant medical problem worldwide. The NS5B Polymerase of HCV plays a central role in virus replication and is a prime target for the discovery of new treatment options. We recently disclosed 1H-benzo[d
3-aryl(alkyl)quinazoline-2,4(1H,3H)-diones and their alkyl derivatives
Shestakov,Sidorenko,Bushmarinov,Shikhaliev,Antipin
experimental part, p. 1691 - 1696 (2010/04/29)
Two-stage reaction of methyl anthranilate with aryl(alkyl) isocyanates in keeping with the quantumchemical calculations and XRD analysis resulted in 3-aryl(alkyl)quinazoline-2,4(1H,3H)-diones that by treatment with alkyl halides, phenacyl bromides, esters
One-pot synthesis of quinazoline-2,4(1H,3H)-diones and 2- thioxoquinazolinones with the aid of low-valent titanium reagent
Dou, Guo-Lan,Wang, Man-Man,Huang, Zhi-Bin,Shi, Da-Qing
experimental part, p. 645 - 649 (2009/11/30)
(Chemical Equation Presented) An efficient, convenient, one-pot synthesis of 2,4(1H,3H)-quinazolinediones and 2-thioxoquinazolinones was accomplished in good yields via the novel reductive cyclization of ethyl 2-nitrobenzoates with isocyanates or isothioc
Convenient Preparation of N-substituted 2-Amino-4H-3,1-benzoxazin-4-ones and 3-Substituted 2,4(1H,3H)-Quinazolinediones
Papadopoulos, E. P.,Torres, C. D.
, p. 269 - 272 (2007/10/02)
Room temperature of 2-(3-arylureido)benzoic acids (1) and methyl2-(3-alkyl-, or 3-arylureido)-benzoates (2) with concentrated sulfuric acid leads to N-substituted 2-amino-4H-3,1-benzoxazin-4-ones (3) in generally very good yields.The isomeric 3-substitute
