11H,12H-[1]benzopyrano[2,3-b][1]benzopyran-11,12-dione and deriv

Details 11H,12H-[1]benzopyrano[2,3-b][1]benzopyran-11,12-dione and deriv 11H,12H-[1]benzopyrano[2,3-b][1]benzopyran-11,12-dione and deriv

1975-03-12

1976-08-31

Trousof, Natalie

Drug, bio-affecting and body treating compositions

Antigen, epitope, or other immunospecific immunoeffector

Allergen or component thereof

260327TH, 2603405, 2603452, 260470, 260473G, 424282, 424283, 260590D, C07D33506

Patent

active

039780813

ABSTRACT:
Benzopyrano-benzopyranes and the sulfur analogs thereof, benzothiopyranobenzothiopyranes, useful as medicinal agents. Compositions of matter including 11H,12H-[1]benzopyrano[2,3-b][1]benzopyran-11,12-dione or 11H,12H-[1]benzothiopyrano[2,3-b][1]benzothiopyran-11,12-dione, and derivatives thereof including acid addition salts.

REFERENCES:
patent: 3752830 (1973-08-01), von Strandtmann
patent: 3842085 (1974-10-01), VON Strandtmann

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