| 摘要 |
1,240,513. Fatty acid esters. ONO PHARMACEUTICAL CO. Ltd. 13 Sept., 1968, No. 43790/68. Heading C2C. [Also in Division A5] Mixtures of at least 30% methyl or ethyl esters of γ-linolenic acid and not more than 70% methyl or ethyl esters of linoleic acid are prepared by heating a solution of a raw material containing γ-linolenic acid or its methyl or ethyl ester with urea, filtering and recovering the ester composition from the filtrate or alternatively by passing through a column of silver adsorbed on a carrier, eluting with a solvent and collecting the enriched eluate. The raw materials may be mixtures of fatty acids containing γ-linolenic acid or the methyl and ethyl esters or oils from plant seeds, e.g. Oenothera homarkiana or Symphytum officinale or from microbes or protozoa. The compositions are suitable for the treatment of diseases accompanied by abnormal liver metabolism. |
