S. Demarino et al., A NOVEL SULFATED STEROID WITH A 7-MEMBERED 5-OXALACTONE B-RING FROM AN ANTARCTIC STARFISH OF THE FAMILY ASTERIIDAE, Tetrahedron, 53(25), 1997, pp. 8625-8628
Three novel sulphated polyhydroxylated steroids, named asterasterols A
-C (1-3), have been isolated from an Antarctic starfish of the family
Asteriidae and their structures elucidated by spectroscopic studies. S
teroid 1 has the seven-membered 5-oxalactone B-ring; 2 and 3 are the c
orresponding 6-oxo steroids. (C) 1997 Published by Elsevier Science Lt
d.