G. Bifulco et al., NOVEL HIV-INHIBITORY HALISTANOL SULFATES F-H FROM A MARINE SPONGE, PSEUDOAXINISSA-DIGITATA, Journal of natural products, 57(1), 1994, pp. 164-167
Three new steroid sulfates 2-4 related to halistanol sulfate [1] were
isolated along with the known halistanol sulfate C [5] from the marine
sponge Pseudoaxinissa digitata. Halistanol sulfates F [2] and G [3] p
roved to be cytoprotective against HIV.