✦ LIBER ✦

Thornasterol A and B, two genuine sapogenols from the starfish acanthaster planci

✍ Scribed by Isao Kitagawa; Motomasa Kobayashi; Tamio Sugawara; Itiro Yosioka

Publisher: Elsevier Science
Year: 1975
Tongue: French
Weight: 216 KB
Volume: 16
Category: Article
ISSN: 0040-4039
DOI: 10.1016/s0040-4039(00)72032-6

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✦ Synopsis

For these years, several steroidal sapogenols and a prosapogenol have been isolated by acid hydrolysis of the saponin mixture of the starfish Acanthaster ~lanci, and their structures have been demonstrated respectively to be 5u-pregn-9(11)-ene-38,6a-diol-2O-one (A), 192) a_ cholesta-9(11),20(22)-dlene-3~,6a-diol-23-one (i),l) 5a-cholesta-9(11),17(20),24-trienc36,6adiol (&3) 24~-methyl-5u-cholesta-9(11).20(22)-diene-3g,6a-diol (*),3) and 6-O-quinovopyranoside ofi (z).4) However, the genuineness of these sapogenols in regard to the canstitueots

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