A reinvestigation of the exts. from the starfish c. novaguineae has led to the isolation of 11 polyhydroxysteroidal glycosides and 5 polyhydroxysteroids. One of them has been identified with culcitoside C1, previously isolated from the same organism. Nine are known compds. previously found in starfishes, the majority having been isolated from the related species Halitle regularis. Six are new compds. and include 1 polyhydroxysteroid (I) and 5 steroid diglycosides, designated culcitosides C4, C5, C6, C7, and C8. All compds. have been obtained in very small amts., ranging from 9.2 to 2 mg from 3.8 kg of fresh organism. A 2nd group of compds. isolated from C. novaguineae consists of phosphorylglyceryl ethers.
Starfish saponins, part 46. Steroidal glycosides and polyhydroxysteroids from the starfish Culcita novaeguineae
RICCIO, Raffaele;
1991-01-01
Abstract
A reinvestigation of the exts. from the starfish c. novaguineae has led to the isolation of 11 polyhydroxysteroidal glycosides and 5 polyhydroxysteroids. One of them has been identified with culcitoside C1, previously isolated from the same organism. Nine are known compds. previously found in starfishes, the majority having been isolated from the related species Halitle regularis. Six are new compds. and include 1 polyhydroxysteroid (I) and 5 steroid diglycosides, designated culcitosides C4, C5, C6, C7, and C8. All compds. have been obtained in very small amts., ranging from 9.2 to 2 mg from 3.8 kg of fresh organism. A 2nd group of compds. isolated from C. novaguineae consists of phosphorylglyceryl ethers.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
