Six triterpenoids, sodwanones A-F (1-3, 7-3), having three different s
keletons, have been isolated from the Indo-Pacific sponge Axinella wel
tneri. The complete spectral data of the previously reported sodwanone
s A-C [1-3], together with the structure determination of the new sodw
anones D-F [7-9], based mainly on 1D and 2D nmr spectroscopy, are the
subject of this report.