Patent US4078138A successfully refreshed from Google Patents.
US4078138A
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US
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3'-Epi-4'deoxykanamycin B
Assignee: Meiji Seika Kaisha Ltd
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Filing: 1975-12-05
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Granted: 1978-03-07
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Expires: 1995-12-05
Abstract
Abstract 3',4'-α-Epoxyneamine and its related aminoglycosidic antibiotic derivatives containing 3',4'-α-epoxyneamine moiety in the molecule thereof are now provided, which may be in the form of their amino-protected and partially hydroxyl-protected product and which are useful as intermediates for use in the synthetic production of therapeutically valuable 3'-deoxy derivatives of aminoglycosidic antibiotics.
Inventors
- 👤 Eiichi Akita
- 👤 Yukio Horiuchi
- 👤 Takeo Miyazawa
- 👤 Toshio Yoneta
- 👤 Sumio Umezawa
- 👤 Hamao Umezawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 15:03
CPC Classifications
C; C07; C07H; C07H15/00; C07H15/20; C07H15/22; C07H15/222; C07H15/224; A; A61; A61P; A61P31/00; A61P31/04; C07H15/226; C07H15/228; C07H15/23; C07H15/234
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
2 words
3'-epi-4'-deoxykanamycin B.
Claim 2
Dependent Claim
2 words
3'-epi-4'-deoxykanamycin B.
References Cited (Backward Citations)
US3929762A
Cited
US3920628A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-03-06 | 1981-09-05 | 1982-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-03-06 | 1985-09-05 | 1986-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-03-06 | 1989-09-05 | 1990-03-07 | $7700.00 | Window Closed / Lapsed |