US5591837A
Expired / Lapsed
US
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5-O-desosaminylerythronolide a derivative
Assignee: Taisho Pharmaceutical Co Ltd
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Filing: 1993-04-21
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Granted: 1997-01-07
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Expires: 2013-04-21
Abstract
Abstract PCT No. PCT/JP93/00516 Sec. 371 Date Oct. 14, 1994 Sec. 102(e) Date Oct. 14, 1994 PCT Filed Apr. 21, 1993 PCT Pub. No. WO93/21199 PCT Pub. Date Oct. 28, 1993Object: To provide a novel macrolide antibiotic having a strong antibacterial activity. Constitution: 11-Amino-3,11-dideoxy-3-oxo-5-O-desosaminyl-6-O-methylerythronolide A 11-N,12-O-cyclic carbamate which has a ketone at the 3-position and a methylated hydroxyl group at the 6-position of a 5-O-desosaminylerythronolide A derivative, and pharmaceutically acceptable acid addition salts thereof.
Inventors
- 👤 Toshifumi Asaka
- 👤 Masato Kashimura
- 👤 Yoko Misawa
- 👤 Shigeo Morimoto
- 👤 Katsuo Hatayama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:50
CPC Classifications
C; C07; C07H; C07H17/00; C07H17/04; C07H17/08; A; A61; A61K; A61K31/00; A61K31/70; A61K31/7042; A61K31/7048
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
12 words
11-Amino3,11-dideoxy-3-oxo-5-O-desosaminyl-6-O-methylerythronolide A 11-N,12-O-cyclic carbamate or a pharmaceutically acceptable acid addition salt thereof.
Claim 2
Dependent Claim
12 words
11-Amino3,11-dideoxy-3-oxo-5-O-desosaminyl-6-O-methylerythronolide A 11-N,12-O-cyclic carbamate or a pharmaceutically acceptable acid addition salt thereof.
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) | 2000-01-07 | 2000-07-08 | 2001-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-01-07 | 2004-07-08 | 2005-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-01-07 | 2008-07-08 | 2009-01-07 | $7700.00 | Window Closed / Lapsed |