Four new polyhydroxysteroids, 5 alpha-cholesta-3 beta,5,6 beta,15 alph
a,16 beta,25,26-heptaol, 24-ethyl-5 alpha-cholesta-3 beta,5,6 beta,15
alpha,28,29-heptaol-29 (22E)-24-methyl-5 alpha-cholest-22-ene-3 beta,5
,6 beta, 15 alpha,25,26-hexaol-26-sulfate, 24-propyl-5 alpha-cholesta-
3 beta,5,6 beta,8,15 alpha,28, and the known 5 alpha-cholesta-3 beta,5
,6 beta,15 alpha,16 beta,26-hexaol, have been isolated from the starfi
sh Ctenodiscus crispatus.