Chiral bicyclic guanidines: a concise and efficient aziridine-based synthesis
作者:Weiping Ye、Dasheng Leow、Serena Li Min Goh、Chin-Tong Tan、Chee-Hoe Chian、Choon-Hong Tan
DOI:10.1016/j.tetlet.2005.11.133
日期:2006.2
series of chiral bicyclicguanidines, either symmetrical or non-symmetrical, was synthesized using a concise and efficient aziridine-based synthetic methodology. Starting from commercial amino alcohols, five synthetic steps were performed, with only three requiring chromatographic purification, giving the desired guanidines in 43–71% overall yield. Preliminary studies using these guanidines showed moderate