Extracts of salvia species having antiviral activity

Details Extracts of salvia species having antiviral activity Extracts of salvia species having antiviral activity

1997-12-04

1999-11-30

Krass, Frederick

Drug, bio-affecting and body treating compositions

Designated organic active ingredient containing

Ester doai

514533, 514570, 514574, 4241951, A01N 6500, A61K 3578, A61K 39385

Patent

active

059944005

ABSTRACT:
This invention provides extracts of Salvia species essentially consisting of that fraction from a Salvia that precipitates from aqueous solution at pH .ltoreq.3, said precipitate having the property such that it is is essentially fully dissolved in aqueous solution at pH 6, with solubility beginning to be readily observable at about pH 4, said extract having a molecular weight of .ltoreq.3500 datons. A preferred embodiment of the invention provides active agents having a molecular weight of .ltoreq.1000 daltons.

REFERENCES:
Yang et al--Yaoxue Tongbao, 16(11) 646-7 (Peop. Rep. China) (Abstract), 1981.
Chen et al --Yaoxue Tongbao, 16 (9), 24-5 (Peop. Rep. China.) (Abstract), 1981.
Jiang et al--Yiyao Gongye, 18 (8), 349-51 (Peop. Rep. China) (Abstract), 1987.
Meng et al--Chung-Kuo Chung Hsi I Cheieh Ho Tsa Chih 12(6) 345-7, 324-5 (China) (Abstract), 1992.
Cheng et al--Chung-Kuo Chung Hsi I Chieh Ho Tsa Chih 12(7) 424-4, 390 (China) (Abstract), 1992.
Tanaka, et al., J. Nat. Prod. (1996) vol. 59, pp. 843-849.

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