Method for preparing an extract of ginkgo biloba leaves...

Details Method for preparing an extract of ginkgo biloba leaves... Method for preparing an extract of ginkgo biloba leaves...

2006-05-23

2006-05-23

Tate, Christopher R. (Department: 1655)

Drug, bio-affecting and body treating compositions

Plant material or plant extract of undetermined constitution...

Containing or obtained from ginkgo

C424S776000

Reexamination Certificate

active

07048954

ABSTRACT:
A process for the preparation of an extract ofGinkgo bilobaleaves, comprisingi. extraction of the dried fragments ofGinkgo bilobaleaves in ethanol containing a maximum of 20% by weight of water;ii. concentration of the extract under reduced pressure in the presence of an aqueous solution of sodium chloride and elimination of the dark oil from the remainder of the clear solution;iii. washing of the residual aqueous solution by liquid-liquid extraction with n-hexane, n-heptane or cyclohexane,iv. liquid-liquid extraction of the aqueous phase washed with ethyl acetate; andv. washing of the ethyl acetate phase obtained in stage iv with a sodium chloride solution followed by evaporation to dryness of the washed ethyl acetate phase and use of the resulting extract to treat cerebral and peripheral vascular disorders and neurodegenerative diseases.

REFERENCES:
patent: 5241084 (1993-08-01), Teng
patent: 5322688 (1994-06-01), Schwabe
patent: 5389370 (1995-02-01), O'Reilly et al.
patent: 5599950 (1997-02-01), Teng
patent: 6030621 (2000-02-01), De Long et al.
patent: 6328999 (2001-12-01), Schwabe
patent: 6447819 (2002-09-01), Paracchini
patent: 6590109 (2003-07-01), Lichtblau et al.
patent: 1059825 (2000-12-01), None
patent: 3832056 (1990-03-01), None
patent: 021193907 (1990-07-01), None
Database WPI, Section Ch, Week 200143, Derwent Publications Ltd., London, GB, An 2001-398915, XP2002184929.
Database WPI, Section Ch, Week 199602 Derwent Publications Ltd., London, GB; AN 1996-018388, XP002184930.
Database BIOSIS ′Online!, Biosciences Information Service, Phil., PA, US, Mar. 2000, Koch et al. Evidence . . . Mouse, XP0021841928.

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