BETULINOL DERIVATIVES PREPARATION PROCESS USING SILVER BIRCH BARK

摘要

A process is disclosed, for preparing a derivative of a targeted natural product from plants. The targeted natural product is extracted from the desired part of the plant and the targeted natural product is transformed into the desired derivative(s). Both the extraction and transformation are carried out in a single step consisting of macerating the desired part of the plant in a composition comprising an organic solvent and a reactive agent. This process is particularly useful for preparing derivatives of betulin or lupeol from bark of birch.