M. Musman et al., Hipposulfates A and B, new sesterterpene sulfates from an Okinawan sponge,Hippospongia cf. metachromia, J NAT PROD, 64(3), 2001, pp. 350-352
Two new sesterterpene sulfates, hipposulfates A (1) and B (2), have been is
olated from an Okinawan sponge, Hippospongia cf. metachromia and their stru
ctures elucidated by interpretation of spectroscopic data. Both compounds c
ontain an enolsulfate functionality. Hipposulfate A (1) showed moderate cyt
otoxicity.