← Back to Patent Explorer
US4778815A Expired / Lapsed US ⏱️ 0.0 years remaining

Method of inhibiting cataracts by topical application of a 2-substituted 1,2-benzisoselenazol-3(2H)-one

Assignee: Novartis Corp
•
Filing: 1987-03-18
•
Granted: 1988-10-18
•
Expires: 2007-03-18
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract A method of inhibiting cataract formation occasioned by the oxidative cross-linking of proteinaceous material in the lens fiber of the eye of a mammal comprising the topical administration of an effective antioxidant amount, to the eye of said mammal in need of the same, of a compound of the formula: ##STR1## wherein R is phenyl or phenyl substituted lower alkyl, the phenyl group of each being unsubstituted or substituted by halo, lower alkyl, lower alkoxy, trifluoromethyl, nitro, di-loweralkylamino, cyano, carboxy, methylenedioxy, loweralkoxycarbonyl, carboxyloweralkyl, or loweralkoxycarbonyl-lower alkyl, or R is cycloalkyl of 5 to 10 carbon atoms; and R 1 and R 2 are independently hydrogen, halo, lower alkyl, lower alkoxy, hydroxy, trifluoromethyl, or nitro or R 1 and R 2 taken together are methylenedioxy.

Inventors

  • 👤 William D. Cash

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-29 22:17
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/33; A61K31/395; A61K31/41

Claims Analysis

Total Claims: 3
Claim 1
Independent Claim 131 words
A method of inhibiting cataract formation occasioned by the oxidative cross-linking of proteinaceous material in the lens fiber of the eye of a mammal, comprising the topical administration of an effective antioxidant amount, to the eye of said mammal in need thereof, of a compound of the formula: ##STR4## wherein R is phenyl or phenyl substituted lower alkyl, wherein the phenyl group of each is unsubstituted or substituted by halo, lower alkyl, lower alkoxy, trifluoromethyl, nitro, di-lower alkylamino, cyano, carboxy, methylenedioxy, lower alkoxycarbonyl, carboxy substituted lower alkyl, or lower alkoxycarbonyl substituted lower alkyl, or R is cycloalkyl of 5 to 10 carbon atoms; and R 1 and R 2 are independently hydrogen, halo, lower alkyl, lower alkoxy, hydroxy, trifluoromethyl or nitro, or R 1 and R 2 taken together are methylenedioxy.
Claim 2
Independent Claim 131 words
A method of inhibiting cataract formation occasioned by the oxidative cross-linking of proteinaceous material in the lens fiber of the eye of a mammal, comprising the topical administration of an effective antioxidant amount, to the eye of said mammal in need thereof, of a compound of the formula: ##STR4## wherein R is phenyl or phenyl substituted lower alkyl, wherein the phenyl group of each is unsubstituted or substituted by halo, lower alkyl, lower alkoxy, trifluoromethyl, nitro, di-lower alkylamino, cyano, carboxy, methylenedioxy, lower alkoxycarbonyl, carboxy substituted lower alkyl, or lower alkoxycarbonyl substituted lower alkyl, or R is cycloalkyl of 5 to 10 carbon atoms; and R 1 and R 2 are independently hydrogen, halo, lower alkyl, lower alkoxy, hydroxy, trifluoromethyl or nitro, or R 1 and R 2 taken together are methylenedioxy.
Claim 3
Dependent Claim 19 words
A method according to claim 1 wherein R is phenyl and both R 1 and R 2 are hydrogen.

References Cited (Backward Citations)

EP0044453A2 Cited
US4352799A Cited
US4418069A Cited
US4397858A Cited
US4454068A Cited
US4550168A Cited
US4711961A Cited
DE3616923A1 Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1991-10-18 1992-04-18 1992-10-18 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1995-10-18 1996-04-18 1996-10-18 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1999-10-18 2000-04-18 2000-10-18 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag