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Minor and trace sterols in marine invertebrates 38: isolation, structure elucidation and partial synthesis of papakusterol, a new biosynthetically unusual marine sterol with a cyclopropyl-containing side chain

✍ Scribed by Carlo Bonini; Robin B. Kinnel; Michael Li; Paul J. Scheuer; Carl Djerassai

Publisher: Elsevier Science
Year: 1983
Tongue: French
Weight: 223 KB
Volume: 24
Category: Article
ISSN: 0040-4039
DOI: 10.1016/s0040-4039(00)81384-2

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✦ Synopsis

tero, fp!?.x A new cyclopropyl-containing sterol papakusterol (22-dehydro-24,26-cyclocholes- arising by a hitherto unknown bios nthetic process, was isolated from six "deep sea" gorgonians and its structure elucidated by Y H-NMR analysis and partial synthesis. Traces of the corresponding A5v7-diene have also been encountered. In our search for new marine sterols we considered it important to examine "deep sea" organisms where photochemically induced biosynthetic processes are inhibited because of lack of light.

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