title: Six novel tetraterpenoid ethers, lycopanerols B-G, and some other constituents from the green microalga Botryococcus braunii.
abstract: 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.
authors.affiliation: Service RMN, UMR CNRS 75-76, Ecole Nationale Supérieure de Chimie de Paris, France.
authors.forename: M N
authors.initials: MN
authors.lastname: Rager
authors.forename: P
authors.initials: P
authors.lastname: Metzger
mesh_terms: 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*
chemical_list: D004987:Ethers; D013729:Terpenes