Tn. Makarieva et al., ANNASTEROL SULFATE, A NOVEL MARINE SULFATED STEROID, INHIBITOR OF GLUCANASE ACTIVITY FROM THE DEEP-WATER SPONGE POECILLASTRA-LAMINARIS, Tetrahedron letters, 36(1), 1995, pp. 129-132
A novel sulfated steroid annasterol sulfate (5) has been isolated from
the deep water sponge Poecillastra laminaris. Its structure has been
determined on the bask of chemical transformations and spectral data T
his steroid was shown to be a potent inhibitor of glucanases.