Steroidal saponins from the rhizomes of Trillium tschonoskii Maxim.

► Ten compounds were isolated from Trillium tschonoskii. ► Two sterols and two spirostanols were firstly obtained from Trillium. ► The complete NMR data of two furostanols has been reported. ► The research confirms that Trillium and Paris are closely related taxonomically. ► The study supports that the two genera can be independent from Liliaceae.