Six novel tetraterpenoid ethers, lycopanerols B-G, and some other constituents from the green microalga Botryococcus braunii.
Six novel tetraterpenoid ethers, lycopanerols B-G, were isolated from lipidic extracts of the green microalga Botryococcus braunii (L race), along with a series of phytyl esters and alpha- and beta-tocopherols. The structures of the compounds were determined by means of spectral analyses including 2D NMR techniques. A biogenetic relationship is proposed between lycopanerols and lycopadiene, the acyclic diunsaturated tetraterpenoid hydrocarbon synthesized by the alga.
Rager
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Service RMN, UMR CNRS 75-76, Ecole Nationale Supérieure de Chimie de Paris, France.
Metzger
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D000460:Chlorophyta / Q000737:chemistry*; D004987:Ethers / Q000737:chemistry; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D016339:Spectrometry, Mass, Fast Atom Bombardment; D013055:Spectrophotometry, Infrared; D013729:Terpenes / Q000737:chemistry / Q000302:isolation & purification*
D004987:Ethers; D013729:Terpenes