2-Hydroxy-3-nitro-1,4-naphthoquinones

Chemistry of carbon compounds – Miscellaneous organic carbon compounds – C-metal

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424331, C07C 4962, C07C 4966

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active

040149072

ABSTRACT:
Substituted naphthoquinones of the formula (I) and pharmaceutically acceptable salts thereof wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 represent alkyl, aryl, alkoxy, hydroxy, hydrogen or halogen or any two of the groups R.sub.1, R.sub.2, R.sub.3 and R.sub.4 taken together complete a carbocyclic ring, have useful anti-allergy activity in mammals.

REFERENCES:
patent: 3833726 (1974-09-01), Schwender et al.
patent: 3920845 (1975-11-01), Smith et al.
Vladimirtsev et al., Chemical Abstracts 73:1190f, (1970).
Ikeda et al., Chemical Abstracts 50:3358d, (1956).

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