A new styryllactone namely cardiopetalolactone was isolated and characteriz
ed from the stem bark extract of Goniothalamus cardiopetalus (Annonaceae) t
ogether with two known lactones altholactone and goniopypyrone. The structu
re and stereochemistry of the new compound was determined on the basis of 2
D NMR experiments, NOE difference spectroscopy and the Mosher ester techniq
ue. (C) 2000 Elsevier Science Ltd. All rights reserved.