Pentaceraster alveolatus

Minale et al. have also studied the saponins of L. maculata and have reported isolation of luidiaglycoside A (945), B (946), marthasteroside B (953), C (954), and thomasteroside A (920) 639). Riccio et al. investigated five additional species of starfish, Ophidiaster ophi-dianus 640), Hacelia attenuata 640), Linckia laevigata 641), Protoreaster nodosus 642), and Pentaceraster alveolatus 642). O. ophidianus and H. attenuata both contained two saponins with a C26 steroidal aglycone, named ophidianoside B (955) and C (956). Two further saponins... 

Riccio, R., F. Zollo, E. Finamore, L. Minale, D. Laurent, G. Bargibant, and J. Pusset Starfish Saponins, 19. A Novel Steroidal Glycoside Sulfate from the Starfishes Protoreaster nodosus and Pentaceraster alveolatus. J. Nat. Prod. 48, 266 (1985). 

Zollo, F., Finamore, E., Minale, L., Laurent, D and Bargibant, G. (1986) Starfish saponins. 29. Novel steroidal glycoside from the starfish Pentaceraster alveolatus. J. Nat. Prod., 49, 919-921. 

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