One-step construction of 2-substituted-4,6-diazaindoles from carboxylic acid derivatives
作者:Jinhua J. Song、Zhulin Tan、Jonathan T. Reeves、Daniel R. Fandrick、Heewon Lee、Nathan K. Yee、Chris H. Senanayake
DOI:10.1016/j.tetlet.2009.04.080
日期:2009.7
Treatment of unprotected 5-amino-4-methylpyrimidine (2) with n-BuLi gave dianion 3. Direct condensation of the dianion with various carboxylic acid derivatives furnished a range of 2-substituted-4,6-diazaindoles in good yields in one step without the need for protecting groups or oxidation-state adjustment.
The invention is related to anti-viral compounds of formula (A) as defined in the claims, compositions containing such compounds, and therapeutic methods that include the administration of such compounds, as well to processes and intermediates useful for preparing such compounds.