US3954973A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alkylated derivatives of antibiotic Av290
Assignee: Wyeth Holdings LLC
•
Filing: 1975-01-03
•
Granted: 1976-05-04
•
Expires: 1995-01-03
Abstract
Abstract This disclosure describes a novel series of active antibacterial agents derived by reaction of antibiotic AV290 with certain classes of alkyl halides.
Inventors
- 👤 Joseph John Hlavka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 04:59
CPC Classifications
C; C07; C07G; C07G11/00
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
63 words
The product of the reaction of antibiotic AV290 with methyl bromide, a compound which a. is effective in inhibiting the growth of bacteria; and in its essentially pure crystalline form b. has the following elemental analysis (percent): C, 45.96; H, 5.00; N, 5.29; Cl, 3.08; Br, 9.53; and c. has a characteristic infrared absorption spectrum as shown in FIG. 1 of the drawings.
Claim 2
Dependent Claim
63 words
The product of the reaction of antibiotic AV290 with methyl bromide, a compound which a. is effective in inhibiting the growth of bacteria; and in its essentially pure crystalline form b. has the following elemental analysis (percent): C, 45.96; H, 5.00; N, 5.29; Cl, 3.08; Br, 9.53; and c. has a characteristic infrared absorption spectrum as shown in FIG. 1 of the drawings.
Claim 3
Dependent Claim
63 words
The product of the reaction of antibiotic AV290 with methyl iodide, a compound which a. is effective in inhibiting the growth of bacteria; and in its essentially pure crystalline form b. has the following elemental analysis (percent): C, 45.20; H, 4.86; N, 5.42; Cl, 3.46; I, 15.08; and c. has a characteristic infrared absorption spectrum as shown in FIG. 2 of the drawings.
Claim 4
Dependent Claim
63 words
The product of the reaction of antibiotic AV290 with methyl iodide, a compound which a. is effective in inhibiting the growth of bacteria; and in its essentially pure crystalline form b. has the following elemental analysis (percent): C, 45.20; H, 4.86; N, 5.42; Cl, 3.46; I, 15.08; and c. has a characteristic infrared absorption spectrum as shown in FIG. 2 of the drawings.
Claim 5
Dependent Claim
63 words
The product of the reaction of antibiotic AV290 with ethyl iodide, a compound which a. is effective in inhibiting the growth of bacteria; and in its essentially pure crystalline form b. has the following elemental analysis (percent): C, 35.43; H, 3.88; N, 4.33; Cl, 3.30; I, 10.67; and c. has a characteristic infrared absorption spectrum as shown in FIG. 3 of the drawings.
Claim 6
Dependent Claim
63 words
The product of the reaction of antibiotic AV290 with ethyl iodide, a compound which a. is effective in inhibiting the growth of bacteria; and in its essentially pure crystalline form b. has the following elemental analysis (percent): C, 35.43; H, 3.88; N, 4.33; Cl, 3.30; I, 10.67; and c. has a characteristic infrared absorption spectrum as shown in FIG. 3 of the drawings.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-05-04 | 1979-11-03 | 1980-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-05-04 | 1983-11-03 | 1984-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-05-04 | 1987-11-03 | 1988-05-04 | $7700.00 | Window Closed / Lapsed |