Process for purifying 7-dimethylamino-6-demethyl-6-deoxytetracyc

Details Process for purifying 7-dimethylamino-6-demethyl-6-deoxytetracyc Process for purifying 7-dimethylamino-6-demethyl-6-deoxytetracyc

1991-08-27

1993-04-13

Ivy, C. Warren

Organic compounds -- part of the class 532-570 series

Organic compounds

Tetracyclo naphthacene configured ring system having at...

552203, C07C23311

Patent

active

052024490

ABSTRACT:
A process for purifying 7-dimenthylamino-6-demethyl-6-deoxytetracycline represented by the following formula, ##STR1## which comprises dissolving 7-dimethylamino-6-demethyl-6-deoxytetracycline or its hydrochloride having a lower purity in a mixed solvent of an alcohol and water by using hydrochloric acid and then adjusting the pH of the solution to 3.5 to 4.5 to recrystallize the hydrochloride having a higher purity.

REFERENCES:
patent: 4061676 (1977-12-01), Villax
patent: 4579686 (1986-04-01), Szarvas et al.

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