Palythoalones A and B, New Ecdysteroids from the Marine Zoanthid <i>Palythoa </i><i>a</i><i>ustraliae</i>

Abstract

Two new ecdysteroids, palythoalones A (1) and B (2), have been isolated from the marine zoanthid Palythoa australiae. The structures have been elucidated on the basis of spectroscopic data and by chemical means.