TY - GEN AU - Huang,X-C AU - Guo,Y-W AU - Song,G-Q TI - Fortisterol, a novel steroid with an unusual seven-membered lactone ring B from the Chinese marine sponge Biemna fortis Topsent SN - 1028-6020 PY - 2007///0112 KW - Animals KW - Lactones KW - chemistry KW - Magnetic Resonance Spectroscopy KW - Porifera KW - Spectrometry, Mass, Electrospray Ionization KW - Spectrophotometry, Ultraviolet KW - Steroids N1 - Publication Type: Journal Article; Research Support, Non-U.S. Gov't UR - https://doi.org/10.1080/10286020410001690127 ER -