Patent US4105695A successfully refreshed from Google Patents.
US4105695A
Expired / Lapsed
US
⏱️ 0.0 years remaining
2-Amino-1-(2,5-dimethoxyphenyl)-butanes
Assignee: Bristol Myers Co
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Filing: 1977-05-11
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Granted: 1978-08-08
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Expires: 1997-05-11
Abstract
Abstract Compounds of the formula ##STR1## wherein R 1 is Cl, Br, (lower)alkylthio or ##STR2## in which R 3 is H or (lower)alkyl including the racemic mixtures and the dextrorotatory and levorotatory isomers, and the pharmaceutically acceptable non-toxic salts thereof have been found to enhance the learning capacity of mammals, including man, and to improve the mental alertness and attitudes of geriatrics without producing the undesirable stimulant side effects associated with the use of amphetamines.
Inventors
- 👤 Richard A. Partyka
- 👤 Robert T. Standridge
- 👤 Henry G. Howell
- 👤 Alexander T. Shulgin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:21
CPC Classifications
C; C07; C07D; C07D209/00; C07D209/02; C07D209/44; C07D209/48; C07C; C07C323/00
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
15 words
The compound of the formula ##STR21## or a pharmaceutically acceptable nontoxic acid addition salt thereof.
Claim 2
Dependent Claim
15 words
The compound of the formula ##STR21## or a pharmaceutically acceptable nontoxic acid addition salt thereof.
Claim 3
Dependent Claim
15 words
The compound of the formula ##STR22## or a pharmaceutically acceptable nontoxic acid addition salt thereof.
Claim 4
Dependent Claim
15 words
The compound of the formula ##STR22## or a pharmaceutically acceptable nontoxic acid addition salt thereof.
Claim 5
Dependent Claim
9 words
The hydrochloride salt of the compound of claim 1.
Claim 6
Dependent Claim
9 words
The hydrochloride salt of the compound of claim 2.
References Cited (Backward Citations)
US3655737A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-08-07 | 1982-02-06 | 1982-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-08-07 | 1986-02-06 | 1986-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-08-07 | 1990-02-06 | 1990-08-08 | $7700.00 | Window Closed / Lapsed |