Furanosesterterpenes from the Guangxi sponge Biemna fortis Topsent

Publication date: October 2018Source: Biochemical Systematics and Ecology, Volume 80Author(s): Kang-Lu Ju, Mei-Tang Feng, Kun Lin, Ai-Hong Liu, Li-Hua Feng, Yue-Wei Guo, Shui-Chun Mao, Bin WangAbstractChemical investigation of the acetone extract of the sponge Biemna fortis Topsent, collected from Weizhou Island, Guangxi Autonomous Region, China, afforded a new minor furanosesterterpene, (12E,18R, 20E) - 8- hydroxyvariabilin (4), together with four known analogues (1–3 and 5). The structure of the new compound was elucidated by detailed analysis of spectroscopic data, including 1D and 2D NMR (1H and 13C NMR, 1H–1H COSY, HSQC, and HMBC), as well as by comparison with reported data. This is the first report of furanosesterterpenes from the species B. fortis and from the family Desmacellidae as well. The chemotaxonomic significance of these isolated furanosesterterpenes has been discussed.
Source: Biochemical Systematics and Ecology - Category: Biochemistry Source Type: research