A new sesquiterpenoid with an aromadendrane skeleton, halichonadin F (1), and the Cu(I) complex of haliconadin C (2) were isolated from a marinesponge Halichondria sp., and the structures and relative stereochemistries of 1 and the complex of 2 were elucidated on the basis of spectroscopic data and chemical methods.
An expedient entry into the preparation of isothiocyanate terpenes is presented. The method involves the addition of isothiocyanicacid prepared “in situ” to terminal double bonds.