PREPARATION METHOD AND APPLICATION OF ALKALOIDS FROM CYNANCHUM KOMAROVII

摘要

#$%^&*AU2020100748A420200618.pdf#####Abstract The present invention discloses a preparation method and application of total alkaloids from Cynanchum Komarovii. In the present invention, a method for extracting alkaloids stepwise is used. The used solvents are dichloromethane, petroleum ether and ethanol, and have low boiling points. The resultant product has a small amount of solvent residues, and is simple in process and advantageous for large-scale production. Moreover, the prepared alkaloids from Cynanchum Komarovii have good analgesic effects.