US4156789A
Expired / Lapsed
US
⏱️ 0.0 years remaining
5,6,7,8-Tetrahydro-1,6,7-naphthalenetriols
Assignee: ER Squibb and Sons LLC
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Filing: 1975-10-09
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Granted: 1979-05-29
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Expires: 1995-10-09
Abstract
Abstract 5,6,7,8-Tetrahydro-1,6,7-naphthalenetriols having the formula ##STR1## wherein R 8 , R 9 and R 10 are the same or different and are hydrogen, lower alkyl, monocyclic aryl-lower alkyl, lower alkoxy, carboxy, or monocyclic cycloalkyl, are intermediates useful in the preparation of compounds used to treat coronary diseases.
Inventors
- 👤 Frederic P. Hauck
- 👤 Christopher M. Cimarusti
- 👤 Venkatachala L. Narayanan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:34
CPC Classifications
C; C07; C07D; C07D303/00; C07D303/02; C07D303/38; A; A61; A61P; A61P9/00; C07C; C07C217/00; C07C217/02; C07C217/04; C07C217/28; C07C217/30; C07C217/32; C07C217/36; C07C37/00; C07C37/01; C07C37/055; C07C37/0555; C07C39/00; C07C39/12; C07C39/17; C07C41/00; C07C41/01; C07C41/18; C07C41/26; C07C43/00; C07C43/02; C07C43/20; C07C43/23; C07C65/00; C07C65/01; C07C65/17; C07D263/00; C07D263/02; C07D263/04; C07D263/06; C07D303/12; C07D303/14; C07D303/18; C07D303/20; C07D303/22; C07D303/24; C07D303/26; C07D303/28; C07D303/36; C07C2602/00; C07C2602/02; C07C2602/04; C07C2602/10
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
29 words
Compounds of the structure ##STR82## wherein R 8 , R 9 , and R 10 are the same or different and are hydrogen, lower alkyl, lower alkoxy, or cycloalkyl.
Claim 2
Dependent Claim
29 words
Compounds of the structure ##STR82## wherein R 8 , R 9 , and R 10 are the same or different and are hydrogen, lower alkyl, lower alkoxy, or cycloalkyl.
Claim 3
Dependent Claim
19 words
The compound in accordance with claim 1 wherein R 8 , R 9 , and R 10 are hydrogen.
Claim 4
Dependent Claim
17 words
A compound in accordance with claim 1 wherein the adjacent hydroxy groups are in the trans configuration.
Claim 5
Dependent Claim
18 words
A compound in accordance with claim 1 wherein the two adjacent hydroxy groups are in the cis configurations.
Claim 6
Dependent Claim
18 words
A compound in accordance with claim 3 wherein R 8 , R 9 and R 10 are hydrogen.
Claim 7
Dependent Claim
18 words
A compound in accordance with claim 4 wherein R 8 , R 9 and R 10 are hydrogen.
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) | 1982-05-28 | 1982-11-27 | 1983-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-05-28 | 1986-11-27 | 1987-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-05-28 | 1990-11-27 | 1991-05-29 | $7700.00 | Window Closed / Lapsed |