US4362866A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aprosamine derivatives
Assignee: Shionogi and Co Ltd
•
Filing: 1981-10-22
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Granted: 1982-12-07
•
Expires: 2001-10-22
Abstract
Abstract New aprosamine derivatives having the reinforced antimicrobial activity against gram-positive and negative bacteria with less side effects than apramycin, and produced by chemical modification of 8'-hydroxy group of aprosamine obtained by means of hydrolysis of apramycin.
Inventors
- 👤 Kikuo Igarashi
- 👤 Tsunetoshi Honma
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:28
CPC Classifications
C; C07; C07H; C07H15/00; C07H15/20; C07H15/22; C07H15/222; C07H15/224; A; A61; A61P; A61P31/00; A61P31/04; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/55
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
30 words
An aprosamine derivative having the following general formula and its pharmaceutically acceptable acid addition salts: ##STR6## (wherein n is 0 or 1; the wave line indicates axial or equatorial configuration).
Claim 2
Dependent Claim
30 words
An aprosamine derivative having the following general formula and its pharmaceutically acceptable acid addition salts: ##STR6## (wherein n is 0 or 1; the wave line indicates axial or equatorial configuration).
Claim 3
Dependent Claim
18 words
An aprosamine derivative claimed in claim 1, wherein n is 0 and the wave line indicates equatorial configuration.
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) | 1985-12-06 | 1986-06-07 | 1986-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-12-06 | 1990-06-07 | 1990-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-12-06 | 1994-06-07 | 1994-12-07 | $7700.00 | Window Closed / Lapsed |