Patent ID: 7527814
Filing Date: 2009-05-05
Classification: A01N,B01D,Y02A

Abstract:
1. A process for the isolation of calliterpenone from plant genus Callicarpa , the process comprising the steps of: a. drying leaves of b. grinding dry leaves of c. heating the powder with an aqueous solution to obtain an aqueous extract; wherein the aqueous solution comprises between about 1 and about 5 wt % alkali; d. concentrating the aqueous extract to form a concentrated extract wherein a volume of the concentrated extract is less than a volume of the aqueous extract; e. extracting the concentrated extract with a water immiscible organic solvent at a temperature to form an organic extract; wherein the water immiscible organic solvent is selected from the group consisting of pentane, hexane, diethyl ether, ethyl ether, dichloromethane and butanol; f. concentrating the organic extract to form crude calliterpenone; and g. purifying the crude calliterpenone to form calliterpenone.