An easy route to exotic 9-epimers of 9-amino-(9-deoxy) cinchona alkaloids with (8S, 9R) and (8R, 9S)-configurations through two inversions of configuration
作者:Jing-Wei Wan、Xue-Bing Ma、Rong-Xing He、Ming Li
DOI:10.1016/j.cclet.2013.12.008
日期:2014.4
Four exotic chiral organocatalysts, 9-amino-(9-deoxy) cinchona alkaloids with (8S, 9R) and (8R, 9S)-configurations, were conveniently synthesized for the first time in 27-72% total yields through two conversions of configuration at the 9-stereogenic centers of commercially available cinchona alkaloids. (C) 2013 Xue-Bing Ma and Ming Li. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.