Résumé : Four novel polyhydroxylated steroids have been isolated from Sinularia dissecta: 24ζ‐methylcholestane‐3β,5α,6B‐triol (I), 24ζ‐methylcholestane‐3β,5α,6β‐triol 6‐monoacetate (II) and the corresponding 24‐methylene derivatives III and IV. Copyright © 1976 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim