专利汇可以提供Production of oleanolic acid专利检索,专利查询,专利分析的服务。并且PURPOSE: To obtain the titled slightly producible compound by synthesis, etc., in high yield, by extracting ground beets such as beet sugar extract residue produced as waste in a large amount in a sugar manufactory with an organic solvent to give a saponin extract and hydrolyzing the extract with a mineral acid.
CONSTITUTION: Ground beets obtained by crushing beet leaves and sugar extract residue are extracted with an organic solvent such as an alcohol, e.g., methanol, etc., to give a saponin extract, which is hydrolyzed with 10W20wt% mineral acid such as hydrochloric acid, sulfuric acid, etc., to give crude oleanolic acid shown by the formula effective for liver disorder, or the ground beets are treated with the mineral acid, saponin in the ground beets is hydrolyzed and converted into oleanolic acid, which is extracted with an organic solvent such as acetone, ethyl acetate, benzene, etc., besides the alcohol to give the crude oleanolic acid shown by the formula. These crude oleanolic acids are passed through an anion exchange resin and purified to give the aimed high-purity compound.
COPYRIGHT: (C)1987,JPO&Japio,下面是Production of oleanolic acid专利的具体信息内容。
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