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US 2009/0275778 A1Published application
Process for preparing high purity corosolic acid and high purity ursolic acid
AssigneesKenko Corporation, Tokiwa Phytochemical Co., Ltd.
InventorsNaoaki Yoshida, Chihiro Mori, Tsutomu Sasaki
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Abstract
According to the present invention, there is provided a process for preparing corosolic acid comprising the steps of (1) dissolving crude extract of Japanese loquat leaves in alkali and aqueous alcohol and (2) applying the solution to a nonpolar adsorption resin to obtain corosolic acid.
Claims16
A process for preparing corosolic acid comprising the steps of:
- (1) dissolving crude extract of Japanese loquat leaves in alkali and aqueous alcohol;
- and
- (2) applying the solution to a nonpolar adsorption resin to obtain corosolic acid.
A process for preparing ursolic acid comprising the following steps:
- (1′) dissolving crude extract of Japanese loquat leaves in alkali and aqueous alcohol;
- and
- (2′) applying the solution to a nonpolar adsorption resin to obtain ursolic acid.
Dependencies are inferred from the claim text.