Method for treating glaucoma IC

1. A method of decreasing intraocular pressure in an animal in need thereof, comprising administering to the animal

an effective amount of pilocarpine; and

an effective amount of a compound of the formula I:

wherein

R 1 and R 2 are independently selected from hydrogen, acylamino, acyloxyalkyl, alkanoyl, alkanoylalkyl, alkenyl, alkoxy, alkoxycarbonyl, alkoxycarbonylalkyl, alkyl, alkylamino, (C 1 -C 3 )alkylenedioxy, allyl, amino, ω-alkylenesulfonic acid, carbamoyl, carboxy, carboxyalkyl, cycloalkyl, dialkylamino, halo, hydroxy, (C 2 -C 6 )hydroxyalkyl, mercapto, nitro, sulfamoyl, sulfonic acid, alkylsulfonyl, alkylsulfinyl, alkylthio, trifluoromethyl, azetidin-1-yl, morpholin-4-yl, thiomorpholin-4-yl, piperidin-1-yl, 4-[C 6 or C 10 ]arylpiperidin-1-yl, 4-[C 6 or C 10 ]arylpiperazin-1-yl, or Ar, wherein Ar is C 6 or C 10 aryl or a 5- or 6-membered heteroaryl ring, wherein 6-membered heteroaryl ring contains one to three atoms of N, and the 5-membered heteroaryl ring contains from one to three atoms of N or one atom of O or S and zero to two atoms of N, each heteroaryl ring can be fused to a benzene, pyridine, pyrimidine, pyridazine, pyrazine, or (1,2,3)triazine, wherein the ring fusion is at a carbon-carbon double bond of Ar, Ar-alkyl, Ar—O, ArSO 2 —, ArSO—, ArS—, ArSO 2 NH—, ArNH, (N—Ar)(N-alkyl)N—, ArC(O)—, ArC(O)NH—, ArNH—C(O)—, or (N—Ar)(N-alkyl)N—C(O)—, or together R 1 and R 2 comprise methylenedioxy;

Z is hydrogen

Y is a group of the formula —CH(R 5 )—R 6 wherein R 5 is hydrogen;

R 6 is a group of the formula —W—R 7 , wherein R 7 is Rs, wherein W is —C(═O)— and Rs is a C 6 aryl;

Q is S;

M is absent; and

X is a pharmaceutically acceptable anion, or a pharmaceutically acceptable salt of the compound,

wherein aryl or Ar can be substituted with one or more substituents selected from the group consisting of acylamino, acyloxyalkyl, alkanoyl, alkanoylalkyl, alkenyl, alkoxy, alkoxycarbonyl, alkoxycarbonylalkyl, alkyl, alkylamino, (C 1 -C 3 )alkylenedioxy, alkylsulfonyl, alkylsulfinyl, ω-alkylenesulfonic acid, alkylthio, allyl, amino, ArC(O)—, ArC(O)NH—, ArO—, Ar—, Ar-alkyl-, carboxy, carboxyalkyl, cycloalkyl, dialkylamino, halo, trifluoromethyl, hydroxy, (C 2 -C 6 )hydroxyalkyl, mercapto, nitro, sulfamoyl, sulfonic acid, 1-pyrrolidinyl, 4-[C 6 or C 10 ]arylpiperazin-1-yl-, 4-[C 6 or C 10 ]arylpiperidin-1-yl, azetidin-1-yl, morpholin-4-yl, thiomorpholin-4-yl, and piperidin-1-yl, wherein the decreased intraocular pressure treats glaucoma.

2. The method of claim 1 , wherein the compound of the formula I is 3-(2-phenyl-2-oxoethyl)-4,5-dimethylthiazolium chloride.

3. The method of claim 1 , wherein said compounds are administered intravenously.

4. The method of claim 1 , wherein said compounds are administered intracamerally.

5. The method of claim 1 , wherein R 1 is alkyl.

6. The method of claim 1 , wherein R 2 is alkyl.

7. The method of claim 1 , wherein R 1 and R 2 are both alkyl.

8. The method of claim 1 , wherein R 1 is methyl.

9. The method of claim 1 , wherein R 2 is methyl.

10. The method of claim 1 , wherein Rs is unsubstituted phenyl.

11. The method of claim 1 , wherein X is halogen.

12. The method of claim 1 , wherein X is chloride or bromide.

13. The method of claim 1 , wherein the compound of formula I is 3-(2-phenyl-2-oxoethyl)-4,5-dimethylthiazolium bromide.

14. A method of decreasing intraocular pressure in an animal in need thereof, comprising administering to the animal an effective amount of pilocarpine and 3-(2-phenyl-2-oxoethyl)-4,5-dimethylthiazolium chloride wherein the decreased intraocular pressure treats glaucoma.

15. The method of claim 1 , wherein the animal is a human.

16. The method of claim 14 , wherein the animal is a human.