US4713465A
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Flavanone intermediates for halogenohydroxyflavones
Assignee: HESCH ROLF-DEITER DR
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Filing: 1985-11-26
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Granted: 1987-12-15
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Expires: 2005-11-26
Abstract
Abstract Halogenohydroxyflavones ##STR1## in which R is alkyl having 1-3 C atoms, X is F, Cl, Br or I, and m, n and p are each 1, 2 or 3, and their esters with sulfuric acid and phosphoric acid, and the salts of these compounds, are suitable for the treatment of hyperthyroidism.
Inventors
- 👤 Josef Kramer
- 👤 Klaus Irmscher
- 👤 Helmut Prucher
- 👤 Rolf-Dieter Hesch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 03:59
CPC Classifications
C; C07; C07D; C07D311/00; C07D311/02; C07D311/04; C07D311/22; C07D311/26; C07D311/28; C07D311/30; A; A61; A61P; A61P5/00; A61P5/10; A61P5/12; C07F; C07F9/00; C07F9/02; C07F9/547; C07F9/655; C07F9/6552; C07F9/65522
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
45 words
A flavanone of the formula ##STR6## wherein R is alkyl of 1-3 C atoms, X is F, Cl, Br or I, and each of m, n and p is 1, 2 or 3, and the sum of n and p is not more than 5.
Claim 2
Dependent Claim
45 words
A flavanone of the formula ##STR6## wherein R is alkyl of 1-3 C atoms, X is F, Cl, Br or I, and each of m, n and p is 1, 2 or 3, and the sum of n and p is not more than 5.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-12-14 | 1991-06-15 | 1991-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-12-14 | 1995-06-15 | 1995-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-12-14 | 1999-06-15 | 1999-12-15 | $7700.00 | Window Closed / Lapsed |