Certonardoa semiregularis

The starfish Certonardoa semiregularis has shown to be a rich source of bioactive sterols and glycosides of polyhydroxylated steroids. Purification of the brine shrimp active fraction of the methanolic extract of C. semiregularis led to the isolation of nine new sulfated polyhydroxylated steroidal diglycosides [41],... 

Eight new polyhydroxysteroid glycosides (32a-32e, 33a-33c), Fig. (11), glycosylated at C-28 and C-29, and the C-24 glycosides Certonardosides H3 and H4 (34 and 35), Fig. (12), together with twenty two new polyhydroxysteroids were further isolated from the brine shrimp active fraction of the starfish Certonardoa semiregularis [42, 43]. 

Two unusual taurine-containing long-chain fatty acids were isolated from the Korean starfish Certonardoa semiregularis, the compound that contains EPA is new (Wang et al, 2003c). 

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