title: Isolation and identification of polyprenols from bovine thyroid gland.
abstract: The presence of polyprenols in bovine thyroid was demonstrated. After preparative isolation, the structure was elucidated by chemical and spectroscopic techniques. The main polyprenol homologue has a molecular weight of 1380 corresponding to the presence of 20 isoprene units. From NMR studies it appears that 18 units have the cis configuration and that the 2 others are trans isoprene units. The dolichol content amounts to 0.2 mg/g wet weight. About 5% was found in the esterified form.
mesh_terms: D000818:Animals; D002417:Cattle; D004224:Diterpenes / Q000302:isolation & purification*; D004286:Dolichols / Q000302:isolation & purification*; D004952:Esters; D009682:Magnetic Resonance Spectroscopy; D013961:Thyroid Gland / Q000032:analysis*
chemical_list: D004224:Diterpenes; D004286:Dolichols; D004952:Esters