Homonuclear Diels–Alder dimerization of 5-ethenyl-2-phenylsulfanyl-1H-imidazoles and its application to synthesis of 12,12′-dimethylageliferin
作者:Ikuo Kawasaki、Norihiro Sakaguchi、Abdul Khadeer、Masayuki Yamashita、Shunsaku Ohta
DOI:10.1016/j.tet.2006.08.027
日期:2006.10
Homonuclear Diels-Alder dimerization of various 5-ethenyl-2-phenylsulfanyl-1H-imidazoles provided a novel highly regio- and stereoselective route to the preparation of multifunctionalized 4,5,6,7-tetrahydrobenzimidazoles, which is the basic skeleton of ageliferin, a biologically active pyrrole-imidazole marine alkaloid. The reaction was applied to the synthesis of 12,12'-dimethylageliferin. (c) 2006 Elsevier Ltd. All rights reserved.