Facile Synthesis of 1,2,4-Triazoles via a Copper-Catalyzed Tandem Addition−Oxidative Cyclization
作者:Satoshi Ueda、Hideko Nagasawa
DOI:10.1021/ja905056z
日期:2009.10.28
A simple one-step synthesis of 1,2,4-triazole derivatives is provided by a copper-catalyzed oxidative coupling reaction under an atmosphere of air. The process should consist of sequential. N-C and N-N bond-forming copper-catalyzed oxidative coupling reactions. Starting materials and the copper catalyst are readily available and inexpensive. A wide range of functional groups are tolerated to achieve chemical diversity.
Non-steroidal Pregnancy-Terminating Agents: Design, Synthesis and Structure–Activity Relationships of 2-Aryl-1,2,4-triazolo[1,5-a]pyridine
作者:Tao Liu、Yongzhou Hu
DOI:10.1016/s0960-894x(02)00399-2
日期:2002.9
The syntheses and the pregnancy-terminating activity relationships of compounds 5a-n are reported. Compounds 5b and 5l are found to be more potent than DL-111-a known drug having effective pregnancy-terminating activity in vitro. Further research shows compounds 5b and 5l have the same activity as DL-111 in vivo. We also found an exciting result that they have excellent anti-implantation activity after oral administration. (C) 2002 Elsevier Science Ltd. All rights reserved.