Extracts of ginkgo biloba and their methods of preparation

Details Extracts of ginkgo biloba and their methods of preparation Extracts of ginkgo biloba and their methods of preparation

1996-03-12

1997-12-23

Tsang, Cecilia J.

Drug, bio-affecting and body treating compositions

Antigen, epitope, or other immunospecific immunoeffector

Conjugate or complex

514 12, A61K 4716, A61K 4700, C07K 1400

Patent

active

057004684

ABSTRACT:
A process is provided for producing a purified extract from Ginkgo biloba leaves by solvent extraction with selected solvents. In the process, a crude or partially purified extract is subjected to solvent extraction with a solvent comprising toluene and n-butanol. Pharmaceutical compositions comprising dimeric flavones and/or polyphenols are also described.

REFERENCES:
patent: 4571407 (1986-02-01), Chatterjee et al.
patent: 4886904 (1989-12-01), Tanaka et al.
patent: 5043323 (1991-08-01), Bombardelli et al.

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