The solid-phase synthesis of allosamidin was investigated. After two N-benzyloxycarbonyl (Cbz)-protected trichloroacetimidate donors were synthesized, the solid-phase synthesis was performed using polystyrene as support and an o-nitrobenzyl ether tether as linker. The target allosamidin was efficiently obtained by iterative glycosylation reactions, catalytic hydrogenation, acetylation, deacetylation
and broad biological activities, which make them an important leading skeleton in the creation of new pesticides. In this work, we synthesized bisindole alkaloid barakacin in a simple seven-step process, and simultaneously designed and synthesized a series of its derivatives. Biological activityresearch indicated that most of these compounds displayed good antiviral activities against tobacco mosaic