Showing papers on "Xanthone published in 1975"
TL;DR: The whole plant of Swertia bimaculata Hf. as discussed by the authors has been shown to contain four tetra-and five penta-oxygenated xanthones, three of which were previously unreported in nature.
26 citations
TL;DR: The wood of Tovomita pyrifolium (Guttiferae) contains the novel tovopyrifolsins A [1,6-dihydroxy-7-methoxy-5-prenyl-6′,6′-dimethylpyrano (2,3′:3,2)xanthone], B (1,5-dhedroxy-3,4-dimethoxyxanthones) and C (3,5)-trihydroxy-2methoxanthone) and also
22 citations
Patent•
04 Dec 1975
TL;DR: In this paper, the authors present compositions containing and methods employing, as the essential ingredient, novel disubstituted xanthone carboxylic acid compounds which are useful in the treatment of allergic conditions.
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-Methylsulfinyl-7-isopropoxyxanthone-2-carboxylic acid and 5,7-di(methylsulfinyl)xanthone-2-carboxylic acid are illustrated as representative compounds.
9 citations
Patent•
23 Jan 1975
TL;DR: The 6-Acetylxanthone-2-carboxylic acid is illustrated as a representative compound and methods for preparing these compounds and compositions and intermediates therein are also disclosed.
Abstract: Compositions containing and methods employing, as the essential ingredient, novel substituted 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. 6-Acetylxanthone-2-carboxylic acid is illustrated as a representative compound.
3 citations
Patent•
20 Jan 1975
TL;DR: In this article, the authors present compositions containing and methods employing, as the essential ingredient, novel disubstituted xanthone carboxylic acid compounds which are useful in the treatment of allergic conditions.
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-Methylthio-7-isopropoxyxanthone-2-carboxylic acid and 5,7-di-(methylthio)xanthone-2-carboxylic acid are illustrated as representative compounds.
2 citations
Patent•
12 Jun 1975
TL;DR: In this article, the inters. for pharmacologically active diazepines of formula (Cpds. of formula) and their salts are new: (where R1 and R2 are H, MeO, MeS, CF3, halogen, NO2 or acetyl, one always being H; R3 is H, 1-3C alkyl or 2,2-diphenylethyl; R4 is H and R5 and R6 are H or CO(CH2)nNR5R6; n = 0
Abstract: 1-Aminoxanthone and -acridone derivs. of formula (I) and their salts are new: (where R1 and R2 are H, MeO, MeS, CF3, halogen, NO2 or acetyl, one always being H; R3 is H, 1-3C alkyl or 2,2-diphenylethyl; R4 is H, 1-3C alkyl or CO(CH2)nNR5R6; n = 0-3; R5 and R6 are H or 1-3C alkyl, or NR5R6 is phthalimido, provided that R5 and R6 are both H when n = 1; X is O, NH or NR7; R7 is 1-3C alkyl, aryl or 1-3C alkylene-NR8R9; R8 and R9 are 1-3C alkyl). Cpds. (I) have psychotherapeutic, antiphlogistic, antiallergic, spasmolytic, vasodilatory and/or local anaesthetic activity, and (I; R4 = COCH2NH2) are also useful as inters. for pharmacologically active diazepines of formula (II).
1 citations