| 摘要 |
FIELD: medicine, pharmaceutics. ^ SUBSTANCE: invention refers to pharmaceutical and cosmetic industry, particularly to a method for preparing borneol. The method for preparing borneol from a hydrodistillate of a lipid portion of fir wood green extract involving saponification of the hydrodistillate in an alcohol solution of alkali, heating, stripping of alcohol and a portion of volatile ingredients, washing in hot still bottom water, separation of still bottom from an aqueous layer, crystallisation of borneol, filtration, washing in an organic solvent, re-crystallisation from mixed ethylacetate and petroleum benzene under certain conditions. ^ EFFECT: method is used to prepare borneol with the content of the main ingredient >99%; the method promotes a higher degree of using the feedstock. ^ 1 ex |
