Three New Phenolic Glycosides and a New Triterpenoid from the Stems ofScolopia chinensis

Three new phenolic glycosides, scolochinenosides C–E (1–3), and a new triterpenoid, scolopianate A (4), were isolated from the stems of Scolopia chinensis, along with 15 known compounds. The structures of the new compounds were elucidated by means of extensive spectroscopic and chemical methods. Compound 3 contains a novel highly oxygenated lactone bridge ring attached at the aglycone. Six lanostane triterpenoids (10–15) were discovered for the first time in a species other than Ganoderma lucidum (Polyporaceae). In addition, the phenolic glycosides were evaluated for their inhibitory activity against snake venom phosphodiesterase I.