Mamanuthaquinone: an antimicrobial and cytotoxic metabolite of Fasciospongia sp.
摘要:
The isolation and structure elucidation of the novel sponge metabolite mamanuthaquinone 2 containing a rearranged drimane moiety linked to a benzoquinone are described. The absolute stereochemistry of 2 is determined via chemical modification, and its biological activity is reported.
Nine new sesquiterpenoidquinones, nakijiquinones J−R (1−9), have been isolated from three collections of Okinawan marinesponges of the family Spongiidae, and the structures and configurations were elucidated from the spectroscopic data and chemical correlations. Nakijiquinones J−L (1−3), M and N (4 and 5, respectively), O (6), P and Q (7 and 8, respectively), and R (9) are new sesquiterpenoid quinones