US3923788A
Expired / Lapsed
US
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Penicillins
Assignee: Bayer AG
•
Filing: 1974-05-03
•
Granted: 1975-12-02
•
Expires: 1994-05-03
Abstract
Abstract New penicillins and their salts and esters particularly active against Gram-negative organisms such as Pseudomonas spp., and their preparation and administration. The penicillins are active against clinically important organisms against which well-known broad spectrum penicillins are inactive and may generally be designated as aminoacyldipeptide penicillins of unusual structure and properties.
Inventors
- 👤 Harry Ferres
- 👤 Adrian Victor Kemmenoe
- 👤 Desmond John Best
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 05:51
CPC Classifications
C; C07; C07D; C07D499/00; A; A61; A61P; A61P31/00; A61P31/04
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
5 words
A PENICILLIN OF FORMULA (I):
Claim 2
Dependent Claim
5 words
A PENICILLIN OF FORMULA (I):
Claim 3
Dependent Claim
16 words
A penicillin of claim 1 wherein the carbon atom attached to R is in the D-configuration.
Claim 4
Dependent Claim
16 words
A penicillin of claim 1 wherein the carbon atom attached to R2 is in the D-configurAtion.
Claim 5
Dependent Claim
12 words
A penicillin of claim 1 wherein R is phenyl, 4-hydroxyphenyl or 3-thienyl.
Claim 6
Dependent Claim
9 words
A penicillin of claim 1 wherein R1 is 2-thienyl.
Claim 7
Dependent Claim
9 words
A penicillin of claim 1 wherein R1 is 3-thienyl.
Claim 8
Dependent Claim
9 words
A penicillin of claim 1 wherein R1 is indol-3-yl.
Claim 9
Dependent Claim
9 words
A penicillin of claim 1 wherein R1 is 1H-imidazol-5-yl.
Claim 10
Dependent Claim
9 words
A penicillin of claim 1 wherein R3 is hydrogen.
Claim 11
Dependent Claim
23 words
A penicillin of claim 1 wherein, when R2 is (II), R5 is amino or hydrogen or, when R2 is (III), R6 is amino.
Claim 12
Dependent Claim
15 words
A penicillin of claim 1 wherein the ester is phthalidyl, 5, 6-dimethoxyphthalidyl, pivaloyloxymethyl or acetoxymethyl.
Claim 13
Dependent Claim
16 words
A penicillin of claim 1 wherein the salt is a base addition or acid addition salt.
Claim 14
Dependent Claim
18 words
The compound of claim 1 which is 6(D, Alpha -(D, Alpha -ureido- Beta -(3-indolyl) propionamido) phenylacetamido) penicillanic acid.
Claim 15
Dependent Claim
16 words
The compound of claim 1 which is 6(D, Alpha -(D,L, Alpha -formamido- Beta -(3-indolyl)propionamido)phenylacetamido) penicillanic acid.
Claim 16
Dependent Claim
15 words
The compound of claim 1 which is D- Alpha -(D,L, Beta -(2-thienyl)- Alpha -ureidopropionamido)-phenylacetamidophenicillanic acid.
References Cited (Backward Citations)
US3340252A
Cited
US3483188A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-01 | 1979-06-02 | 1979-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-01 | 1983-06-02 | 1983-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-01 | 1987-06-02 | 1987-12-02 | $7700.00 | Window Closed / Lapsed |