US3884903A
Expired / Lapsed
US
⏱️ 0.0 years remaining
4{41 -Deoxy-4{41 -oxoerythromycin B derivatives
Assignee: Abbott Laboratories
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Filing: 1974-09-09
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Granted: 1975-05-20
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Expires: 1994-09-09
Abstract
Abstract Covers a 4''''-deoxy-4''''-oxoerythromycin compounds and derivatives thereof which are useful as antibiotics having a formula selected from the group consisting of: WHERE R is -CH2SR3, R2 is hydrogen or loweralkyl, R3 is loweralkyl, and R1 is hydrogen or loweralkanoyl; WHERE R1 and R2 are as before defined; WHERE R is hydrogen or CH3CO; where R1 is hydrogen or RCO, R is loweralkyl, R2 is hydrogen, CH3CO or RCO where R is loweralkyl; and WHERE R3 is hydrogen or RCO where R is loweralkyl.
Inventors
- 👤 Peter Hadley Jones
- 👤 Jerry Roy Martin
- 👤 James Bruce Mcalpine
- 👤 Jeanne Marie Pauvlik
- 👤 John Soloman Tadanier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:14
CPC Classifications
C; C07; C07H; C07H17/00; C07H17/04; C07H17/08
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
12 words
A 4"-DEOXY-4"-OXOERYTHROMYCIN DERIVATIVE HAVING A FORMULA SELECTED FROM THE GROUP CONSISTING OF:
Claim 2
Dependent Claim
12 words
A 4"-DEOXY-4"-OXOERYTHROMYCIN DERIVATIVE HAVING A FORMULA SELECTED FROM THE GROUP CONSISTING OF:
Claim 3
Dependent Claim
12 words
The compound of claim 1 wherein R is CH3CO in Formula III.
Claim 4
Dependent Claim
12 words
The compound of claim 1 wherein R is H in Formula III.
Claim 5
Dependent Claim
14 words
The compound of claim 1 wherein R1 and R2 are H in Formula IV.
Claim 6
Dependent Claim
14 words
The compound of claim 1 wherein R1 and R2 are CH3CO in Formula IV.
Claim 7
Dependent Claim
16 words
The compound of claim 1 wherein R1 is hydrogen and R2 is CH3CO in Formula IV.
Claim 8
Dependent Claim
12 words
The compound of claim 1 wherein R3 is CH3CO in Formula V.
Claim 9
Dependent Claim
9 words
The compound of claim 1 wherein R3 is hydrogen.
References Cited (Backward Citations)
US3417077A
Cited
US3842069A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-05-19 | 1978-11-18 | 1979-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-19 | 1982-11-18 | 1983-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-19 | 1986-11-18 | 1987-05-20 | $7700.00 | Window Closed / Lapsed |