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US4353893A
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Ka-6606 Aminoglycosides antibiotics and compositions thereof
Assignee: Kowa Co Ltd
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Filing: 1981-05-20
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Granted: 1982-10-12
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Expires: 2001-05-20
Abstract
Abstract A compound of the general formula: <IMAGE> wherein R1 and R2 are different and each represents a hydrogen atom or a methyl group, R3 represents a hydrogen atom, or a glycyl group which may be substituted, and the symbol between the carbon atoms at the 5- and 6- positions represents a single or double bond, and an acid addition salt thereof; and its antibiotic use.
Inventors
- 👤 Isamu Watanabe
- 👤 Takashi Yamaguchi
- 👤 Kazuhiro Kamiya
- 👤 Toshihito Mori
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:53
CPC Classifications
C; C07; C07H; C07H15/00; C07H15/20; C07H15/22; C07H15/222; C07H15/224
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
82 words
A compound of the formula: ##STR27## wherein R 1 and R 2 are different and each represents a hydrogen atom or a methyl group, R 3 represents a hydrogen atom, or a group represented by the formula --COCH 2 NHR' in which R' is a member selected from the group consisting of a hydrogen atom, --CH═NH and ##STR28## and the symbol between the carbon atoms at the 5- and 6-positions represents a single or double bond, or an acid addition salt thereof.
Claim 2
Dependent Claim
82 words
A compound of the formula: ##STR27## wherein R 1 and R 2 are different and each represents a hydrogen atom or a methyl group, R 3 represents a hydrogen atom, or a group represented by the formula --COCH 2 NHR' in which R' is a member selected from the group consisting of a hydrogen atom, --CH═NH and ##STR28## and the symbol between the carbon atoms at the 5- and 6-positions represents a single or double bond, or an acid addition salt thereof.
Claim 3
Dependent Claim
93 words
An antibiotic composition which comprises an antibiotically effective amount of a compound of the formula: ##STR29## wherein R 1 and R 2 are different and each represents a hydrogen atom or a methyl group, R 3 represents a hydrogen atom, or a group represented by the formula --COCH 2 NHR' in which R' is a member selected from the group consisting of a hydrogen atom, --CH═NH and ##STR30## and the symbol between the carbon atoms at the 5- and 6-positions represents a single or double bond, and a pharmaceutically acceptable diluent or carrier.
Claim 4
Dependent Claim
93 words
An antibiotic composition which comprises an antibiotically effective amount of a compound of the formula: ##STR29## wherein R 1 and R 2 are different and each represents a hydrogen atom or a methyl group, R 3 represents a hydrogen atom, or a group represented by the formula --COCH 2 NHR' in which R' is a member selected from the group consisting of a hydrogen atom, --CH═NH and ##STR30## and the symbol between the carbon atoms at the 5- and 6-positions represents a single or double bond, and a pharmaceutically acceptable diluent or carrier.
Claim 5
Dependent Claim
36 words
A composition of claim 2 wherein the amount of the compound of the formula or its pharmaceutically acceptable acid addition salt is about 0.01 to about 99.5% by weight based on the weight of the composition.
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) | 1985-10-11 | 1986-04-12 | 1986-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-10-11 | 1990-04-12 | 1990-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-10-11 | 1994-04-12 | 1994-10-12 | $7700.00 | Window Closed / Lapsed |