Patent US4185015A successfully refreshed from Google Patents.
US4185015A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methoxymethyl 6-[D-2,2-dimethyl-4-(4-hydroxyphenyl)-5-oxo-1-imidazolyl]penicillanate
Assignee: Bristol Myers Co
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Filing: 1977-10-03
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Granted: 1980-01-22
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Expires: 1997-10-03
Abstract
Abstract There is disclosed a process for preparing methoxymethyl 6-aminopenicillanate, its conversion to methoxymethyl amoxicillin and the use of the latter compound as an intermediate in the preparation of the methoxymethyl ester of p-hydroxyhetacillin which is the preferred product of this invention.
Inventors
- 👤 Paul D. Sleezer
- 👤 David A. Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:47
CPC Classifications
C; C07; C07D; C07D499/00
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
17 words
The compound of the structure ##STR10## having the D-configuration at the carbon atom marked with an asterisk.
Claim 2
Dependent Claim
17 words
The compound of the structure ##STR10## having the D-configuration at the carbon atom marked with an asterisk.
Claim 3
Dependent Claim
8 words
The hydrochloride of the compound of claim 1.
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) | 1983-01-21 | 1983-07-23 | 1984-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-01-21 | 1987-07-23 | 1988-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-01-21 | 1991-07-23 | 1992-01-22 | $7700.00 | Window Closed / Lapsed |