Two new constituents from the back of holarrhena pubescens

摘要

Two new compounds, norkurchamide (3,20-dioxo-11alpha-hdyroxycona-1,4-diene) (1) and pubatriol (3-oxo-11alpha, 19,22-trihydroxycona-1,4-diene) (2) have been isolated from the back of Holarrhena pubescens. Their structures have been established through spectroscopic studies.