The present invention accomplishes this by having multiple molecules of parent drugs attached to carrier moieties and by extending the period during which the parent drug is released and absorbed after administration to the patient and providing a longer duration of action per dose than the parent drug itself. Prodrug conjugates are suitable for sustained delivery of heteroaryl, lactam- amide-, imide-, sulfonamide-, carbamate-, urea-, benzamide-, acylaniline-, cyclic amide- and tertiary amine-containing parent drugs that are substituted at the amide nitrogen or oxygen atom with labile aldehyde-linked prodrug moieties. The carrier groups of the prodrugs can be hydrophobic to reduce the polarity and solubility of the parent drug under physiological conditions.
US4975449A
申请人:——
公开号:US4975449A
公开(公告)日:1990-12-04
Topical carbonic anhydrase inhibitors
作者:Ronald D. Schoenwald、Mark G. Eller、John A. Dixson、Charles F. Barfknecht
DOI:10.1021/jm00372a020
日期:1984.6
Ethoxzolamide and several derivatives (1-6) were synthesized and evaluated for carbonicanhydrase inhibition (CAI), solubility, pKa, distribution, and corneal permeability. The 6-hydroxy (5) and, particularly, the 6-chloro (6) analogues have the best combination of properties for penetrating the site of action and reducing intraocular pressure. Both 5 and 6 exhibited topical effectiveness in the normal
Topical treatment of glaucoma with 2-benzothiazolesulfonamide derivative
申请人:University of Iowa Research Foundation
公开号:US04975449A1
公开(公告)日:1990-12-04
A topical composition for eye treatment of glaucoma, comprising a small but pharmaceutically effective amount of an analog of benzothiazole-2-sulfonamide. The most preferred compound is 6-chloro-benzothiazole-2-sulfonamide. The invention also relates to a method of topically treating glaucoma with eye drops to reduce intraocular pressure. Finally, disclosed is a method of synthesis of the preferred and highly effective benzothiazole-2-sulfonamide analogs, particularly the 6-chloro-benzothiazole-2-sulfonamide compound.