New aromatic sesquiterpenoids from the red alga Laurencia Okamurai yamada
β Scribed by Minoru Suzuki; Etsuro Kurosawa
- Publisher
- Elsevier Science
- Year
- 1978
- Tongue
- French
- Weight
- 251 KB
- Volume
- 19
- Category
- Article
- ISSN
- 0040-4039
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## Abstract Four new cupareneβderived sesquiterpenes, laureperoxide (**1**), 10βbromoisoaplysin (**2**), isodebromolaurinterol (**3**), and 10βhydroxyisolaurene (**4**), together with seven known, related sesquiterpenes, **5**β**11**, have been isolated from the red alga __Laurencia okamurai.__ The
Laurallene (L), a new brominated cyclic ether having a terminal allene moiety, has been isolated as a main constituent from the marine red alga Laurencia nipponica Yamada (Rhodomelaceae, Rhodophyta) and its structure was determined by its physical and chemical properties.
A new sesquiterpene, designated as spironippol, was isolated from the title alga. The structure, which was determined on the basis of the spectral data and X-ray crystallography,