Dr. Willmar Schwabe Gmbh & Co.

Dr. Willmar Schwabe Gmbh & Co. Kg

Willmar Schwabe Gmbh & Co.

Hermann Hauer

Shyam Sunder Chatterjee

Egon Koch

Clemens Erdelmeier

Friedrich Lang

Michael Noldner

Michael Nöldner

Michael N Oldner

Frank Waimer

Steffen Reinhard

Marc Thöle

Stefan Germer

The present invention relates to an improved multistep method for the production of an extract ofleaves for use as a drug.

Method for producing ginkgo extracts

The present invention relates to an improved multi-step method for preparing an extract from ginkgo biloba having a reduced content of 4'-O-methyl pyridoxine and/or biflavones, wherein the depletion is carried out by filtration over an adsorber resin and/or an ion exchanger and the substances to be removed are retained on the resin. The invention further relates to an extract from ginkgo biloba having a reduced content of 4&#x2032;-O-methyl pyridoxine and/or biflavones, which is obtainable by the method according to the present invention, as well as to its use.

Method for preparing ginkgo extracts having a low content of 4'-O-methyl pyridoxine and/or biflavones

The invention relates to a novel 2H-1-pyran-2-ones of general formula (I),

Pyranones, method for the production and use thereof

Benzopyranones, processes for their preparation and their use

Benzopyranones, a method for producing them and uses therefor

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Karlsruhe, Germany

Hermann Hauer