Constituents of the Heartwood of Diospyros Eriantha

摘要

AbstractThe isolation and identification of fifteen compounds from the heartwoodof Diospyros erianthaare described. Their structures were determined on the basis of spectral evidence and/or comparison with authentic samples. These compounds include three steroids (stigmast‐4‐en‐3‐one, stigmast‐4‐ene‐3,6‐dione, and 3β‐hydroxystigmast‐5‐en‐7‐one), seven triterpenoids (friedelin, lupeol, betulinaldehyde, 3β‐acetoxyurs‐11‐en‐13,28‐olide, 3β‐acetoxyoleanolic acid, betulin, and betulinic acid), three quinones (2‐ethoxy‐7‐methyljuglone, 3‐ethoxy‐7‐methyljuglone, and 2,6‐dimethoxy‐1,4‐benzoquinone), a