✦ LIBER ✦

Isolation of sterols with cyclopropyl-containing side chains from the cultured marine alga peridinium foliaceum

✍ Scribed by Nancy W. Withers; W.C.M.C. Kokke; Michel Rohmer; W.H. Fenical; Carl Djerassi

Publisher: Elsevier Science
Year: 1979
Tongue: French
Weight: 267 KB
Volume: 20
Category: Article
ISSN: 0040-4039
DOI: 10.1016/s0040-4039(01)95475-9

No coin nor oath required. For personal study only.

✦ Synopsis

The sterol fraction of the cultured dinoflagellate Peridinium foliaceum contains in addition to cholesterol, 24-methylcholesterol, 4,24-dimethylcholestanol and dinosterol (C) small amounts of the cyclopropyl-containing sterols gorgosterol (la) and Sa-gorgostanol (lb) as well as 4a-methylgorgostanol (lc) and E-4a,225,23C -(or 246)-trimethylcholest-17(20)-en-38-01 (& or 2). The biosynthetic implications of the first isolation of such sterols from a free-living alga are emphasized. Gorgosterol (la)' was the first of several naturally occurring marine sterols' in which

📜 SIMILAR VOLUMES

Minor and trace sterols in marine invert

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

✍ Carlo Bonini; Robin B. Kinnel; Michael Li; Paul J. Scheuer; Carl Djerassai 📂 Article 📅 1983 🏛 Elsevier Science 🌐 French ⚖ 223 KB

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