A Chemoselective Microwave-Assisted One-Pot Cross-Stille Reaction of Benzylic Halides with 2(1<i>H</i>)-Pyrazinones Using Simultaneous Cooling
作者:Erik Van der Eycken、Prasad Appukkuttan、Mofazzal Husain、Rajinder Gupta、Virinder Parmar
DOI:10.1055/s-2006-941607
日期:2006.6
This manuscript reports the chemoselective one-pot cross-Stille coupling of benzylic halides with 3,5-dichloro-2(1H)-pyrazinones, which avoids the purification and handling of toxic stannylated intermediates. Significant improvements in yields were established when microwave irradiation was performed with simultaneous cooling.
Synthesis and fungicidal activity of 3,5-dichloropyrazin-2(1H)-one derivatives
作者:Isabelle E.J.A. François、Bruno P.A. Cammue、Sara Bresseleers、Hein Fleuren、Georges Hoornaert、Vaibhav P. Mehta、Sachin G. Modha、Erik V. Van der Eycken、Karin Thevissen
DOI:10.1016/j.bmcl.2009.06.024
日期:2009.8
We synthesized a family of 3,5-dichloropyrazin-2(1H)-one derivatives and assessed their in vitro fungicidal activity against Candida albicans. Compounds 11 and 20 were most active against C. albicans and induced accumulation of reactive oxygen species in this pathogen. Using a genome-wide approach in the yeast Saccharomyces cerevisiae, we demonstrated that genes involved in vacuolar functionality and DNA-related functions play an important role in cellular mechanisms underlying the fungicidal activity of these compounds. (C) 2009 Elsevier Ltd. All rights reserved.
VEKEMANS, J.;POLLERS-WIEERS, C.;HOORNAERT, G., J. HETEROCYCL. CHEM., 1983, 20, N 4, 919-923