Triterpenoid alkaloid derivatives from Buxus rugulosa

摘要

Four new triterpenoid alkaloid derivatives, buxrugulines A–D (>1–4), together with four known ones (>5–8), were isolated from the leaves and stems of Buxus rugulosa. The structures of compounds >1–4 were elucidated by NMR and MS spectroscopic analysis. All compounds were assayed for their cytotoxicities against HL-60, SMMC-7721, A549, MCF-7, and SW480 cells lines.