US4424365A
Expired / Lapsed
US
⏱️ 0.0 years remaining
1,2,8,8a-Cyclopropa c!benzo 1,2,-b:-4,3-b'!dipyrrol-4(5H)-ones
Assignee: Pharmacia and Upjohn Co
•
Filing: 1982-06-22
•
Granted: 1984-01-03
•
Expires: 2002-06-22
Abstract
Abstract Novel antibacterially active compound, 1,2,8,8a-cyclopropa c!benzo 1,2-b:-4,3-b'!dipyrrol-4(5H)-one, prepared by a novel chemical process. This compound, as well as antibacterially-active intermediates, can be used to eradicate or control susceptible bacteria, for example B. subtilis, K. pneumonia, S. lutea, S. aureus, and M. avium.
Inventors
- 👤 Wendell Wierenga
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:40
CPC Classifications
C; C07; C07D; C07D487/00; C07D487/02; C07D487/06; C07C; C07C205/00; C07C205/27; C07C205/35; C07C205/36; C07C205/37; C07C309/00; C07C309/63; C07C309/64; C07C309/65; C07C309/66; C07D209/00; C07D209/02; C07D209/04; C07D209/10; C07D209/12
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
82 words
A compound of the formula, which can be in the keto or enol form, wherein R 2 and R 3 are H, alkyl of from 1 to 5 carbon atoms, inclusive, and phenyl; R 4 is selected from the group consisting of SO 2 R 2 , SO 2 CH 2 COphenyl, CO 2 CH 2 Z where Z is selected from the group consisting of CH 2 I, CCl 3 , CH 2 SO 2 R 2 , phenyl, and fluorenylmethyl.
Claim 2
Dependent Claim
82 words
A compound of the formula, which can be in the keto or enol form, wherein R 2 and R 3 are H, alkyl of from 1 to 5 carbon atoms, inclusive, and phenyl; R 4 is selected from the group consisting of SO 2 R 2 , SO 2 CH 2 COphenyl, CO 2 CH 2 Z where Z is selected from the group consisting of CH 2 I, CCl 3 , CH 2 SO 2 R 2 , phenyl, and fluorenylmethyl.
Claim 3
Dependent Claim
19 words
A compound, according to claim 1, having the formula, which can be in the keto or enol form, ##STR2##
References Cited (Backward Citations)
US4169888A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-01-02 | 1987-07-04 | 1988-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-01-02 | 1991-07-04 | 1992-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-01-02 | 1995-07-04 | 1996-01-03 | $7700.00 | Window Closed / Lapsed |