US4202968A
Expired / Lapsed
US
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New tunicamine derivatives and their preparation
Assignee: Meiji Seika Kaisha Ltd
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Filing: 1978-06-29
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Granted: 1980-05-13
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Expires: 1998-06-29
Abstract
Abstract New tunicamine derivatives are provided which exhibit antiviral activity against some virus, particularly Newcastle disease virus, and inhibitory activity against coccidiosis and which are also of particular value as intermediates for the preparation of a variety of useful antibacterial, antitumor and antiviral compounds. They have a structure of the formula: <IMAGE> (I) wherein R represents hydrogen or a fatty acid residue of the formula (CH3)2CH(CH2)nCH=CHCO- where n represents an integer of 8 to 11 inclusive. They are prepared either by fermentation methods or by acid hydrolysis of the known antibiotic tunicamycin.
Inventors
- 👤 Gakuzo Tamura
- 👤 Akira Takatsuki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 08:16
CPC Classifications
C; C07; C07H; C07H19/00; C07H19/02; C07H19/04; C07H19/06; A; A61; A61P; A61P31/00; A61P31/12; C12; C12N; C12N1/00; C12N1/20; C12N1/205; C12P; C12P19/00; C12P19/26; C12P19/28; C12P19/38; C12P19/385; C12R; C12R2001/00; C12R2001/01; C12R2001/465
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
37 words
A tunicamine derivative of the formula: ##STR6## wherein R represents hydrogen or a fatty acid residue of the formula (CH 3 ) 2 CH(CH 2 ) n CH═CHCO--where n represents an integer of 8 to 11 inclusive.
Claim 2
Dependent Claim
37 words
A tunicamine derivative of the formula: ##STR6## wherein R represents hydrogen or a fatty acid residue of the formula (CH 3 ) 2 CH(CH 2 ) n CH═CHCO--where n represents an integer of 8 to 11 inclusive.
Claim 3
Dependent Claim
21 words
A tunicamine derivative according to claim 1 which is designated as tunicamine derivative C and which is of the formula: ##STR7##
Claim 4
Dependent Claim
36 words
A tunicamine derivative according to claim 1 which is in the form of a mixture designated as tunicamine derivative B and which is of the formula: ##STR8## wherein n represents integers of 8 to 11 inclusive.
References Cited (Backward Citations)
JPS4829156A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-05-13 | 1983-11-12 | 1984-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-05-13 | 1987-11-12 | 1988-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-05-13 | 1991-11-12 | 1992-05-13 | $7700.00 | Window Closed / Lapsed |