The invention relates to a method for separating
evodiamine and rutaecarpin from fructus evodiae. The method provided by the invention takes fructus evodiae as a
raw material. The method for preparingthe
evodiamine and rutaecarpin comprises the following steps: taking the
raw material, adding a certain amount of
solvent, extracting, and recycling the
solvent, so that fructus evodiae extract is obtained;
degreasing the extract with a low polarity
solvent and a mixture, and then washing with diluted
hydrochloric acid or
sulfuric acid,
nitric acid or
phosphoric acid solution; taking residual solids, namely obtaining the residual solids by filtering or centrifuging; carrying out adjustment reaction on the residual solids, and filtering or centrifuging; dissolving the solids with
dichloromethane,
chloroform,
acetone or
ethyl acetate again, filtering or centrifuging, obtaining two parts, namely solids and a liquid, taking the
solid and liquid parts, reacting respectively, obtaining a
evodiamine crude product and a rutaecarpin crude product, and then carrying out
crystallization and recrystallization so as to finally obtain high-purity evodiamine and rutaecarpin crystals.