Chemistry of carbon compounds – Miscellaneous organic carbon compounds – C-metal
Patent
1975-03-13
1976-06-22
Milestone, Norma S.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
C-metal
260211R, 260268TR, 26029358, C07D31186
Patent
active
039651150
ABSTRACT:
Compositions containing and methods employing, as the essential ingredient, novel disubstituted xanthone carboxylic acid compounds which are useful in the treatment of allergic conditions. Methods for preparing these compounds and compositions and intermediates therein are also disclosed. 5-Methyl-sulfinyl-7-isopropoxyxanthone-2-carboxylic acid and 5,7-di(methylsulfinyl)xanthone-2-carboxylic acid are illustrated as representative compounds.
REFERENCES:
patent: 3642997 (1972-02-01), Shen et al.
patent: 3706768 (1972-12-01), Bays
Fried John H.
Harrison Ian T.
Pfister Jurg R.
Blaufarb Gerard A.
Milestone Norma S.
Syntex (U.S.A.) Inc.
Walker William B.
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