Purification of benzophenanthridine alkaloids extracts from alka

Details Purification of benzophenanthridine alkaloids extracts from alka Purification of benzophenanthridine alkaloids extracts from alka

1989-11-17

1992-07-28

Rollins, John W.

Drug, bio-affecting and body treating compositions

Antigen, epitope, or other immunospecific immunoeffector

Conjugate or complex

514279, A61K 3578, A01N 4342

Patent

active

051339811

ABSTRACT:
A method for separating and purifying individual benzophenanthridine alkaloids from alkaloid extracts by using the pH differences in formation of their respective alkanolamine or base forms and iminium ions. The insoluble base form of the alkaloid is collected as a precipitate and dissolved in an organic solvent and converted to the insoluble iminium ion form with a mineral or organic acid.

REFERENCES:
patent: 3865830 (1975-02-01), Turkevich
patent: 4145412 (1979-03-01), Ladanyi
patent: 4376115 (1983-03-01), McCrorey
patent: 4599228 (1986-07-01), Ladanyi
patent: 4737503 (1988-04-01), Sakamoto
patent: 4767861 (1988-08-01), Boulware
patent: 4769452 (1988-09-01), Boulware
patent: 4816462 (1989-03-01), Nowicky
patent: 4818533 (1989-04-01), Boulware
Steinmetz E. F. Codex Vegetabilis 1957, #277, 1018.

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