US5093349A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photosensitizing agents
Assignee: Health Research Inc
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Filing: 1990-10-15
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Granted: 1992-03-03
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Expires: 2010-10-15
Abstract
Abstract New classes of photosensitizing compounds useful in photodynamic therapy are disclosed. These compounds are simplified dimers and polymers of monohydroxy deuteroporphyrins, hydrophobic ethers of these monomers, and red light-absorbing derivatives of methyl pheophorbide-a.
Inventors
- 👤 Ravindra K. Pandey
- 👤 Thomas J. Dougherty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:11
CPC Classifications
C; C07; C07D; C07D487/00; C07D487/22; A; A61; A61K; A61K41/00; A61K41/0057; A61K41/0071; C07D519/00
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
31 words
A compound of the formula ##STR8## wherein R 1 is H or alkyl and R3 is a hydrophobic group which is saturated or unsaturated, straight or branched chain hydrocarbon or 6-25C.
Claim 2
Dependent Claim
31 words
A compound of the formula ##STR8## wherein R 1 is H or alkyl and R3 is a hydrophobic group which is saturated or unsaturated, straight or branched chain hydrocarbon or 6-25C.
Claim 3
Dependent Claim
12 words
The compound as claimed in claim 1, wherein R 3 is hexyl.
Claim 4
Dependent Claim
35 words
A method to effect the destruction of target virus, cells or tissue, which comprises contacting said target with an effective amount of compound of claim 1, followed by irradiation with light absorbed by said compound.
Claim 5
Dependent Claim
36 words
A method to effect the destruction of target virus, cells or tissue, which comprises contacting said target with an effective amount of the compound of claim 2, followed by irradiation with light absorbed by said compound.
Claim 6
Dependent Claim
31 words
A pharmaceutical composition useful in treatment of a target virus, cells or tissue, which comprises an effective amount of the compound of claim 1 in admixture with a pharmaceutically acceptable excipient.
Claim 7
Dependent Claim
37 words
A pharmaceutical composition useful in treatment of a target virus, cells or tissue, which comprises: an effective amount of the compound of claim 2; and a pharmaceutically acceptable excipient material mixed with the compound of claim 2.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-03-03 | 1995-09-02 | 1996-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-03-03 | 1999-09-02 | 2000-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-03-03 | 2003-09-02 | 2004-03-03 | $7700.00 | Window Closed / Lapsed |