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Laurencenyne, a plausible precursor of various nonterpenoid C15-compounds, and neolaurencenyne from the red alga laurencia okamurai

✍ Scribed by Hideo Kigoshi; Yoshikazu Shizuri; Haruki Niwa; Kiyoyuki Yamada

Publisher
Elsevier Science
Year
1981
Tongue
French
Weight
294 KB
Volume
22
Category
Article
ISSN
0040-4039

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✦ Synopsis

Structural elucidation of two new acetylenic polyenes, laurencenyne 2 and neolaurencenyne 6 isolated from Laurencia okamurai, together with their syntheses, was achieved, suggesting that laurencenyne 2 was a possible precursor of various nonterpenoid cl5

-compounds in the marine red algae of the genus Laurencia.

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Isolation and structures of trans-lauren
Isolation and structures of trans-laurencenyne, a possible precursor of the C15 halogenated cyclic ethers, and trans-neolaurencenyne from laurencia okamurai
✍ Hideo Kigoshi; Yoshikazu Shizuri; Haruki Niwa; Hiyoyuki Yamada 📂 Article 📅 1982 🏛 Elsevier Science 🌐 French ⚖ 134 KB

Isolation and structural elucidation of two new acetylenic polyenes, translaurencenyne 1 and trans-neolaurencenyne 2 from the marine red alga Laurencia okamu=ere carried out, The former compound 1 very recently being proposed to be a biosynthetic precursor of the Cl5 halogenated cyclic ethers, 1 and

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## Abstract It is shown that in the red seaweed __Jaurencia microcladia__, collected in the Mediterranean off the torrent Il Rogiolo, the new branched C~15~ acetogenin rogiolenyne D ( = (+)‐(__2__S,__3__S,__7__R))‐__3__‐__(bromomethyl)‐7‐[(Z)‐1‐chlorohexen‐3‐en‐5‐nyyl)]‐2‐ethyl‐2,3,6,7‐tetrahydroox