US4591599A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Perfluoropyrrolizines and emulsions thereof useful as blood substitutes
Assignee: Tanabe Pharma Corp
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Filing: 1984-11-13
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Granted: 1986-05-27
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Expires: 2004-11-13
Abstract
Abstract A perfluorobicyclo compound of the general formula: <IMAGE> wherein either or both of Ring A and Ring B may optionally be substituted with lower perfluoroalkyl group (s) and m and n each represent 3 or 4.
Inventors
- 👤 Kazumasa Yokoyama
- 👤 Chikara Fukaya
- 👤 Yoshio Tsuda
- 👤 Taizo Ono
- 👤 Yoshio Arakawa
- 👤 Tadakazu Suyama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:29
CPC Classifications
A; A61; A61K; A61K9/00; A61K9/0012; A61K9/0019; A61K9/0026; C; C07; C07D; C07D455/00; C07D455/02; C07D471/00; C07D471/02; C07D471/04; C07D487/00; C07D487/02; C07D487/04; C25; C25B; C25B3/00; C25B3/01; C25B3/05; C25B3/09; C25B3/11; C25B3/20; C25B3/27; C25B3/28
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
48 words
A perfluoropyrrolizine compound of the formula: ##STR104## in which either the A ring, the B ring, or both are substituted with at least one C 1 to C 3 perfluoroalkyl group provided that the total number of carbon atoms in the perfluoropyrrolizine compound is from 8 to 12.
Claim 2
Dependent Claim
48 words
A perfluoropyrrolizine compound of the formula: ##STR104## in which either the A ring, the B ring, or both are substituted with at least one C 1 to C 3 perfluoroalkyl group provided that the total number of carbon atoms in the perfluoropyrrolizine compound is from 8 to 12.
Claim 3
Dependent Claim
19 words
The perfluoro compound of claim 1 in which the total number of carbon atoms is from 9 to 11.
Claim 4
Dependent Claim
98 words
An emulsion useful as a blood substitute containing a perfluorobicyclo compound capable of carrying oxygen, said emulsion comprising: 5-50% (w/v) of a perfluoropyrrolizine compound of the formula: ##STR105## in which the A ring, the B ring, or both are substituted with at least one C 1 to C 3 perfluoroalkyl group provided that the total number of carbon atoms in the perfluoropyrrolizine compound is from 8 to 12, as an oxygen-carrying component; - 5% (w/v) of an emulsifying agent, and a physiologically acceptable aqueous solution as the balance, the emulsion having a particle diameter of 0.3μ or less.
Claim 5
Dependent Claim
98 words
An emulsion useful as a blood substitute containing a perfluorobicyclo compound capable of carrying oxygen, said emulsion comprising: 5-50% (w/v) of a perfluoropyrrolizine compound of the formula: ##STR105## in which the A ring, the B ring, or both are substituted with at least one C 1 to C 3 perfluoroalkyl group provided that the total number of carbon atoms in the perfluoropyrrolizine compound is from 8 to 12, as an oxygen-carrying component; - 5% (w/v) of an emulsifying agent, and a physiologically acceptable aqueous solution as the balance, the emulsion having a particle diameter of 0.3μ or less.
Claim 6
Dependent Claim
18 words
The emulsion of claim 3 in which the total number of carbon atoms is from 9 to 11.
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) | 1989-05-26 | 1989-11-25 | 1990-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-05-26 | 1993-11-25 | 1994-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-05-26 | 1997-11-25 | 1998-05-27 | $7700.00 | Window Closed / Lapsed |