US5637703A
Expired / Lapsed
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Derivatives of genistein
Assignee: Drug Institute
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Filing: 1996-08-13
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Granted: 1997-06-10
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Expires: 2016-08-13
Abstract
Abstract The invention concerns chemical compounds, derivatives of genistein, which exhibit pronounced immunosuppressant and antitumor activity. In particular, the invention concerns compounds having general formula 1, where R 1 , R 2 , R 3 are the same or different, R 1 denotes hydrogen or alkyl, R 2 and R 3 are the same or different and denote hydrogen, alkyl or aryl, or R 2 and R 3 are taken together with the nitrogen to which they are connected to form a heterocycle ring. ##STR1##
Inventors
- 👤 Aleksander P. Mazurek
- 👤 Krzysztof Biniecki
- 👤 Lech Kozerski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:47
CPC Classifications
C; C07; C07D; C07D311/00; C07D311/02; C07D311/04; C07D311/22; C07D311/26; C07D311/34; C07D311/36; A; A61; A61P; A61P35/00; A61P37/00; A61P37/02; A61P37/06
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
70 words
A compound having the general formula 1, ##STR6## wherein R 1 , R 2 , R 3 are the same or different, and wherein R 1 denotes hydrogen or alkyl, and wherein R 2 and R 3 are the same or different and denote hydrogen, alkyl or aryl, or R 2 and R 3 are taken together with the nitrogen to which they are connected to form a heterocycle ring.
Claim 2
Dependent Claim
70 words
A compound having the general formula 1, ##STR6## wherein R 1 , R 2 , R 3 are the same or different, and wherein R 1 denotes hydrogen or alkyl, and wherein R 2 and R 3 are the same or different and denote hydrogen, alkyl or aryl, or R 2 and R 3 are taken together with the nitrogen to which they are connected to form a heterocycle ring.
Claim 3
Dependent Claim
30 words
A compound according to claim 1, represented by formula 2, ##STR7## wherein in general formula 1, R 1 , R 2 , and R 3 are identical and denote ethyl.
Claim 4
Dependent Claim
39 words
A compound according to claim 1, represented by formula 3, ##STR8## wherein in general formula 1, R 1 denotes hydrogen and R 2 and R 3 are connected and denote CH 2 CH 2 OCH 2 CH 2 .
Claim 5
Dependent Claim
39 words
A compound according to claim 1, represented by formula 4, ##STR9## wherein in general formula 1, R 1 denotes hydrogen and R 2 and R 3 are connected and denote CH 2 CH 2 NHCH 2 CH 2 .
References Cited (Backward Citations)
US4713465A
Cited
US4788215A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-06-09 | 2000-12-09 | 2001-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-06-09 | 2004-12-09 | 2005-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-06-09 | 2008-12-09 | 2009-06-10 | $7700.00 | Window Closed / Lapsed |