Anti-mitotic anti-proliferative compounds

1. A method for treating restenosis or a hyperproliferative disorder selected from the group consisting of restenosis, leukemia, lung cancer, colon cancer, central nervous system cancer, ovarian cancer, renal cancer, breast cancer, cervical cancer, prostate cancer, bladder cancer, liver cancer, lymphoma, pancreatic cancer, thyroid cancer, Kaposi's sarcoma, and malignant melanoma, said method comprising administering to a patient in need thereof an anti-mitotic effective amount of the compound of formula (I):

wherein

Het is a substituted 1,2,4-triazole;

Z 1 Z 2 , and Z 3 are independently a bond or R 1 —X—R 2 , wherein X is NR 3 , O, S, SO, or SO 2 ; R 1 and R 2 are independently a bond or substituted or unsubstituted, saturated or unsaturated, straight-chained or branched lower alkylene; and R 3 is hydrogen, substituted or unsubstituted phenyl, or substituted or unsubstituted, saturated or unsaturated, straight-chained or branched lower alkyl;

Ar 1 is substituted monocyclic aryl;

Ar 2 is substituted or wisubstituted indolyl;

R a is hydrogen or a substituted or unsubstituted monocyclic, aryl, or heteroaryl ring system of 5 or 6 ring atoms or a bicyclic aryl or heterotnyl ring system of 8 to 12 ring atoms, wherein each monocyclic ring may contain 0 to 3 heteroatoms, each bicyclic ring may contain 0 to 4 heteroatoms, and each heteroatom is independently selected from the group consisting of N, O, and S; and

the substituents of Ar 1 , Ar 2 , and R a , when substituted, comprise one to three moieties independently selected from the group consisting of alkyl, alkenyl, alkynyl, phenyl, aralkyl, aralkenyl, hydroxy, hydroxyalkyl, alkoxy, alkoxyalkyl, aralkoxy, aryloxy, acyloxy, halo, haloalkyl, nitro, cyano, amino, mono- and dialkylamino, acylamino, carboxy, carboxyalkyl, carbalkoxy, carbaralkoxy, carbalkoxyalkyl, carbalkoxyalkenyl, aminoalkoxy, amido, mono-alkylamido, di-alkylamido, N,N-cycloaLkylamido, sulfonyl, mono-alkyl sulfonyl, di-alkyl sulfonyl, sulthmoyl, monoalkyl sulfamoyl, di-alkyl sulfamoyl, halophenyl, benzoyl, alkylthio and alkylsulfmyl; or

a pharmaceutically acceptable salt thereof.

2. The method according to claim 1 , for the treatment of restenosis.

3. The method according to claim 1 , wherein said hyperproliferarive disorder is at a site of mechanical injury to an arterial wall produced by treatment of an atherosclerotic lesion by angioplasty.

4. The method according to claim 1 , wherein said hyperproliferative disorder is a cancer susceptible to treatment by inhibition of mitotic spindle formation.

5. The method according to claim 1 for the treatment of a proliferateive disorder selected from the group consisting of leukemia, lung cancer, colon cancer, central nervous system cancer, ovarian cancer, renal cancer, breast cancer, cervical cancer, and prostate cancer, bladder cancer, liver cancer, lymphoma, pancreatic cancer, thyroid cancer, Kaposi's sarcoma, and malignant melanoma.

6. The method according to claim 1 , wherein Ar 1 is substituted benzene, and Ar 2 , is substituted or unsubstituted indole.

7. The method according to claim 1 , wherein R a is a substituted or unsubstituted aromatic ring selected from the group consisting of benzene, pyrrole, thiophene, furan, thiazole, imidazole, pyrazole, 1,2,4-triazole, pyridine, 2(1H)-pyridone, 4(1-H)pyridone, pyrazine, pyrimidine, pyridazine, isothiazole, isoxazole, oxazole, tetrazole, naphthalene, tetralin, naphthyridine, benzofuran, benzothiopheric, indole, 2,3dihydroindole, 1H-indazole, indoline, benzopyrazole, 1,3-benzodioxole, benzoxazole, purine, coumarin, chromone, quinoline, tetrahydroquinoline, isoquinoline, benzimidazole, quinazoline, pyrido[2,3-b]pyrazine, pyrido[3,4-b]pyrazine, pyrido[3,2-c]pyridazine, pyrido[3,4-b]-pyridine, 1H-pyrazole[3,4-d]pyrimidine, pteridine, 2(1H)-quinolone, 1(2H)-isoquinolone, 1,4-benzisoxazine, benzothiazole, quinoxaline, quinoline-N-oxide, isoquinoline-N-oxide, quinoxaline-N-oxide, quinazoline-N-oxide, benzoxazine, phthalazine, and cinnoline.

8. The method according to claim 1 , wherein each Z 1 , Z 2 , and Z 3 is a bond, Ar 1 is a substituted benzene, and R a , is hydrogen.

9. The method according to claim 8 , wherein Ar 1 is substituted with 1 to 3 alkoxy groups.

10. The method according to claim 8 , wherein Ar 1 is substituted with 1 to 3 alkoxy groups, and Ar 2 is substituted with 1 to 3 substituents independently selected from hydroxyl, amino, and monoalkylamino groups.

11. The method according to claim 1 , wherein the compound of formula (I) has the formula:

12. The method according to claim 1 , wherein the compound of formula (I) has the formula:

13. The method according to claim 1 , wherein Z 1 , Z 2 , and Z 3 are each independently a bond, and the compound of formula (I) is further characterized by formula:

wherein R is hydrogen, hydroxyl, amino, or monoalkylamino.

14. The method according to claim 13 , wherein R is hydrogen.

15. The method according to claim 1 , wherein Z 1 , Z 2 , and Z 3 are each independently a bond, and the compound of formula (I) is further characterized by formula:

wherein R is hychogen. hydroxyl, amino or monoalkylamino.

16. The method according to claim 15 , wherein R is hydrogen.

17. The method according to claim 1 , wherein Z 1 , Z 2 , and Z 3 are each independently a bond, and the compound of formula (1) is further characterized by formula:

wherein R 1 and R 2 are independently selected from the group consisting of hydrogen, —OH, —NH 2 , —OCH 3 ,—N(CH 3 ) 2 , —CH 2 OH, —CH 2 OCH 3 ,—CH 2 N(CH 3 ) 2 ,