An efficient and facile synthesis of pyrimidine and quinazoline derivatives via one-pot three-component reaction under solvent-free conditions
作者:Liangce Rong、Hongxia Han、Haiying Wang、Hong Jiang、Shuajiang Tu、Daqing Shi
DOI:10.1002/jhet.43
日期:2009.3
An efficient and convenient method for the preparation of pyrimidine and quinazolinederivatives by the one-pot reaction of aromatic aldehydes, cyclic ketones and guanidine carbonate, in the presence of sodium hydroxide under solvent-free condition was reported. This method has the advantages of excellent yields, mild reaction conditions, easy work-up, and being environmentally friendly over the existing
The discovery and synthesis of novel adenosine receptor (A2A) antagonists
作者:Julius J. Matasi、John P. Caldwell、Jinsong Hao、Bernard Neustadt、Leyla Arik、Carolyn J. Foster、Jean Lachowicz、Deen B. Tulshian
DOI:10.1016/j.bmcl.2005.01.019
日期:2005.3
In high throughput screening of our file compounds, a novel structure 1 was identified as a potent A(2A) receptor antagonist with no selectivity over the A(1) adenosine receptor. The structure-activity relationship investigation using 1 as a template lead to identification of a novel class of compounds as potent and selective antagonists of A(2A) adenosine receptor. Compound 26 was identified to be the most potent A(2A) receptor antagonist (K-i = 0.8 nM) with 100-fold selectivity over the A(1) adenosine receptor. (c) 2005 Elsevier Ltd. All rights reserved.
Heterocycles. Part 11. Synthesis of substituted benzo[h]quinazolines
作者:Nizar R. El-Rayyes、Balkis Al-Saleh、Fatima Al-Omran