supported by the National Natural Science Foundation of China (20732007,20621062,20672137,20872167);the National Basic Research Program of China (2007CB808001);the Science and Technology Commission of Shanghai Municipality (09XD14-05300)
Three arylamide-bridged biscoumarin derivatives 1-3 have been designed and prepared. Compounds 1 and 2 are induced by the intramolecular N?H…O and N·H…F hydrogen bonding to possess a helical conformation,and 3 is i...