METHOD OF PREPARING MIXTURE OF TRITERPENE ACIDS AND MIXTURE OF NEUTRAL ISOPRENOIDS OR BIOLOGICALLY ACTIVE SUBSTANCES CONTAINING SAID COMPOUNDS Russian patent published in 2010 - IPC C07C51/00 C07C51/47 A61K31/15 

FIELD: chemistry.

SUBSTANCE: herbs or fir tree bark which is dried, crushed or pre-treated with steam is extracted with an organic solvent with successive exposure to vacuum ranging from 70 to 380 mmHg and atmospheric pressure not less than two times. The extract is then poured off, dried with anhydrous magnesium sulphate. A mixture of biologically active substances is extracted by evaporation or a 2% solution of sodium hydroxide is added to the extract and left to stratify. After stratification, the aqueous-alkali layer is poured off, acidified with 10% hydrochloric acid to pH=2 and the mixture of triterpene acids is extracted using an organic solvent. The mixture of neutral isoprenoids is extracted from the remaining organic layer of the extract through evaporation.

EFFECT: increased output of the end product and cutting on extraction time.

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