Steroid compounds from the Pacific starfishes Luidia guinaria and Distolasterias elegans

One new and four previously known steroid compounds were identified from the Pacific starfishes Luidia quinaria and Distolasterias elegans. The structure of the new steroid was established from spectral data and chemical correlations with other steroids such as 5 alpha-cholestane-3 beta,5,6 beta,15 alpha, 16 beta,26-hexaol 3-sulfate (1). The previously known compounds were identified as 5 alpha-cholestane-3 beta,5,6 beta,15 alpha,26-pentaol 15-sulfate (2) from Luidia quinaria and sodium (24S)-O-[beta-D-glucopyranosyl]-5 alpha-cholestane-3 beta, 6 alpha,8,15 beta,24-pentaol 6'-sulfate (3), sodium (24S)-5 alpha-cholestane-3 beta,6 alpha,8,15 beta,24-pentaol 24-sulfate (4), and sodium tornasterol A sulfate (5).