Four new triterpenoid saponins isolated from Schefflera kwangsiensis and their inhibitory activities against FBPase1

Abstract Four new triterpenoid saponins, schekwangsiensides H–K ( 1 – 4 ) were isolated from the aerial parts of Schefflera kwangsiensis , together with fifteen esters ( 5 – 19 ) of known saponins. The structures of these compounds were elucidated on the basis of spectroscopic data analysis and chemical evidence. Furthermore, in in vitro assays, compounds 3 , 8 , 17 , and 18 exhibited weak inhibitory activities against fructose-1,6-bisphosphatase (FBPase1).