Zg. Rao et al., RHABDASTRELLIC ACID-A, A NOVEL TRITERPENOID FROM THE MARINE SPONGE RHABDASTRELLA-GLOBOSTELLATA, Journal of natural products, 60(11), 1997, pp. 1163-1164
A new isomalabaricane triterpenoid, rhabdastrellic acid-A (1), was iso
lated from the sponge Rhabdastrella globostellata (Carter) collected f
rom the South China Sea near Hainan Island, People's Republic of China
. Its structure was established on the basis of UV, IR, MS, H-1-NMR, C
-13-NMR, and 2D NMR spectrometry. The relative and absolute stereochem
istries were solved by NOESY and CD studies, respectively.