US4258193A
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Disulfide derivatives having S--S exchange reactivity
Assignee: Asahi Kasei Corp
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Filing: 1979-07-13
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Granted: 1981-03-24
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Expires: 1999-07-13
Abstract
Abstract A disulfide derivative, having S--S exchange reactivity, of the formula R.sub.1 --S--S--R.sub.2 --CO--R.sub.3).sub.n R.sub.4 [I] wherein R 1 is 2-benzothiazolyl or 2-pyridyl-N-oxide, R 2 is alkylene having optionally free or protected functional groups, R 3 is the carboxyl residue of an amino acid or lower polypeptide, R 4 is carboxyl or a reactive derivative thereof or protected carboxyl or imidate, and n is 0 or 1.
Inventors
- 👤 Tadashiro Fujii
- 👤 Nobuaki Nakagawa
- 👤 Kikuo Kotani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 04:38
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/89; C07D277/00; C07D277/60; C07D277/62; C07D277/68; C07D277/70; C07D277/76; C07D277/78; C07K; C07K5/00; C07K5/02; C07K5/0215; A; A61; A61K; A61K38/00
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
10 words
A disulfide derivative selected from the group consisting of ##STR65##
Claim 2
Dependent Claim
10 words
A disulfide derivative selected from the group consisting of ##STR65##
Claim 3
Dependent Claim
13 words
A derivative as claimed in claim 1, in which said member is ##STR66##
Claim 4
Dependent Claim
13 words
A derivative as claimed in claim 1, in which said member is ##STR67##
Claim 5
Dependent Claim
13 words
A derivative as claimed in claim 1, in which said member is ##STR68##
References Cited (Backward Citations)
US3150130A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-03-23 | 1984-09-22 | 1985-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-03-23 | 1988-09-22 | 1989-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-03-23 | 1992-09-22 | 1993-03-24 | $7700.00 | Window Closed / Lapsed |