Patent ID: 8846750

Claim:
A method for preparing a compound represented by the following Formula 2, the method comprising the steps of: (a) extracting Stereocaulon alpinum with methanol; (b) eluting the Stereocaulon alpinum extract, obtained in step (a), with an aqueous solution of methanol or acetonitrile (CH 3 CN) by column chromatography; (c) eluting a fraction, eluted in step (b), with an aqueous solution of acetonitrile (CH 3 CN) or methanol by reverse-phase high-performance liquid chromatography to obtain a lobaric acid-containing fraction; and (d) dissolving the lobaric acid-containing fraction in a solvent, adding NaHCO 3 , Na 2 CO 3 or NaH 2 PO 4 thereto, stifling the mixture, and collecting the compound of the following Formula 2 from the mixture: