Synthesis of Novel KDR Kinase Inhibitors through Catalytic Reductive Cyclization of <i>o</i>-Nitrobenzylcarbonyl Compounds
作者:Audrey Wong、Jeffrey T. Kuethe、Ian W. Davies、David L. Hughes
DOI:10.1021/jo048843m
日期:2004.10.1
through the Swern-type oxidation of readily accessible phenethanol analogues. Reductive cyclization of o-nitrobenzylcarbonyl 3 using catalytic Raneynickel gives 1H-indol-2-yl-1H-quinoline 2 in 95% yield. Hydrolysis of 2 affords the KDR kinase inhibitor 1 in quantitative yield. The examination of the reductive cyclization reaction and optimization of conditions is described.