Therapeutic agent for restenosis

1. A method for therapeutic treatment of restenosis, which comprises administering a therapeutically effective amount of a thiadiazoline derivative or a pharmaceutically acceptable salt thereof represented by the general formula (0):

wherein, n represents an integer of 1 to 3,

R 0 represents (i) aryl which may be substituted with one to three substituents selected from the group consisting of halogen, hydroxy, cyano and lower alkyl, or (ii) -NR 1 COR 2 , wherein R 1 represents a hydrogen atom, R 2 represents lower alkyl, or R 1 and R 2 are combined together to represent alkylene,

R 3 represents lower alkyl,

R 4 represents

(i) a hydrogen atom,

(ii) NHR 6 , wherein R 6 represents (a) lower alkyl which may be substituted with one or two substituents selected from the group consisting of hydroxy, lower alkoxy and NR 11 R 12 , wherein R 11 and R 12 are the same or different, and each represents lower alkanoyl which may be substituted with one or two substituents selected from the group consisting of amino, (lower alkyl)amino and di-(lower alkyl)amino; cycloalkyl; lower alkyl; (lower alkoxy)carbonyl; lower alkoxy; hydroxy or a hydrogen atom; SO 2 R 7 , wherein R 7 represents (1) lower alkyl which may be substituted with one or two substituents selected from the group consisting of (α) (lower alkyl)thio which may be substituted with one or two substituents selected from the group consisting of hydroxy, amino, lower alkoxy, (lower alkyl)amino and di-(lower alkyl)amino; (β) a nitrogen-containing heterocyclic group which may be substituted with one to three substituents selected from the group consisting of lower alkyl which may be substituted with hydroxy, amino, (lower alkyl)amino, or di-(lower alkyl)amino, oxo, hydroxy, sulfanyl, amino, lower alkoxy, methylenedioxy ethylenedioxy, (lower alkyl)thio, (lower alkyl)amino, di-(lower alkyl)amino, lower alkyl, aryl, formyl and lower alkanoyl; (y) lower alkoxy; (δ) hydroxy, and (σ) NR 11 R 12 (wherein R 11 and R 12 have the same meanings as those mentioned above, respectively), (2) amino, (3) (lower alkyl)amino, (4) di-(lower alkyl)amino, or (5) lower alkenyl; (c) COR 8 , wherein R 8 represents (1) lower alkyl which may be substituted with one or two substituents selected from the group consisting of hydroxy, lower alkoxy, carboxy, phenyl, hydroxyphenyl, imidazolyl, guanidyl, methylthio and NR 11 R 12 , wherein

R 11 and R 12 have the same meanings as those mentioned above, respectively; (2) a nitrogen-containing aliphatic heterocyclic group which may be substituted with (lower alkoxy)carbonyl or oxo; or (3) lower alkoxy; (d) cycloalkyl; or (e) a hydrogen atom, or

(iii) CONHR 9 , wherein R 9 represents lower alkyl which may be substituted with one or two substituents selected from the group consisting of hydroxy, lower alkoxy, carbamoyl, (lower alkyl)carbamoyl, di-(lower alkyl)carbamoyl and NR 11 R 12 (wherein R 11 and R 12 have the same meanings as those mentioned above, respectively, and

R 5 represents aryl which may be substituted with one to three substituents selected from the group consisting of halogen, hydroxy, lower alkoxy, nitro, amino, cyano and carboxy.

2. The method according to claim 1 , wherein the thiadiazoline derivative is a thiadiazoline derivative represented by the following formula (00):

wherein R 0 , R 3 , R 4 , R 5 , and n have the same meanings as those mentioned above, respectively), which shows a negative value as a specific rotation at 20° C. for sodium D line (wavelength: 589.3 nm) when the thiadiazoline derivative or the pharmaceutically acceptable salt thereof is dissolved in methanol.

3. The method according to claim 1 , wherein R 4 is

(i) a hydrogen atom,

(ii) NHR 6A , wherein R 6A represents (a) lower alkyl which may be substituted with one or two substituents selected from the group consisting of hydroxy, lower alkoxy and NR 11A R 12A , wherein R 11A and R 12A are the same or different, and each represents lower alkyl, (lower alkoxy)carbonyl, lower alkoxy, hydroxy, or a hydrogen atom; (b) SO 2 R 7 , wherein R 7 has the same meaning as that mentioned above; (c) COR 8A , wherein R 8A represents (1) lower alkyl which may be substituted with one or two substituents selected from the group consisting of hydroxy, lower alkoxy, carboxy, phenyl, hydroxyphenyl, imidazolyl, guanidyl, methylthio and NR 11A R 12A , wherein R 11A and R 12A have the same meanings as those mentioned above, respectively; (2) a nitrogen-containing aliphatic heterocyclic group which may be substituted with (lower alkoxy)carbonyl or oxo; or (3) lower alkoxy; or (d) a hydrogen atom, or

(iii) CONHR 9A , wherein R 9A represents lower alkyl which may be substituted with one or two substituents selected from the group consisting of hydroxy, lower alkoxy, carbamoyl, (lower alkyl)carbamoyl, di-(lower alkyl)carbamoyl and NR 11A R 12A , wherein R 11 and R 12A have the same meanings as those mentioned above, respectively.

4. The method according to claim 1 , wherein R 4 is

(i) a hydrogen atom,

(ii) NHR 6B , wherein R 6B represents (a) lower alkyl which may be substituted with one or two substituents selected from the group consisting of hydroxy and NR 11 R 12B , wherein R 11 and R 12B are the same or different, and each represents lower alkyl or a hydrogen atom; (b) SO 2 R 7B , wherein R 7B represents (1) lower alkyl which may be substituted with one or two substituents selected from the group consisting of (α) (lower alkyl)thio which may be substituted with one or two substituents selected from the group consisting of hydroxy, amino, lower alkoxy, (lower alkyl)amino and di-(lower alkyl)amino; (β) a nitrogen-containing heterocyclic group which may be substituted with one to three substituents selected from the group consisting of lower alkyl which may be substituted with hydroxy, amino, (lower alkyl)amino, or di-(lower alkyl)amino, oxo, hydroxy, sulfanyl, amino, lower alkoxy, methylenedioxy, ethylenedioxy, (lower alkyl)thio, (lower alkyl)amino, di-(lower alkyl)amino, lower alkyl, aryl, formyl and lower alkanoyl; and (γ) NR 11BB R 12BB , wherein R 11BB and R 12BB are the same or different, and each represents lower alkanoyl which may be substituted with one or two substituents selected from the group consisting of amino, (lower alkyl)amino and di-(lower alkyl)amino, cycloalkyl, lower alkyl, or a hydrogen atom, (2) amino, (3) (lower alkyl)amino, (4) di-(lower alkyl)amino, or (5) lower alkenyl; (c) COR 8B , wherein R 8B represents a nitrogen-containing aliphatic heterocyclic group which may be substituted with (lower alkoxy)carbonyl or oxo; or (d) a hydrogen atom, or

(iii) CONHR 9B , wherein R 9B represents lower alkyl which may be substituted with one or two substituents selected from the group consisting of hydroxy, lower alkoxy, carbamoyl, (lower alkyl)carbamoyl and di-(lower alkyl)carbamoyl.

5. The method according to claim 1 , wherein R 4 is

(i) a hydrogen atom,

(ii) NHR 6C , wherein R 6C represents (a) lower alkyl which may be substituted with one or two substituents selected from the group consisting of hydroxy and NR 11B R 12B , wherein R 11B and R 12B have the same meanings as those mentioned above, respectively; (b) SO 2 R 7C , wherein R 7C represents (1) lower alkyl which may be substituted with one or two substituents selected from the group consisting of (α) (lower alkyl)thio which may be substituted with one or two substituents selected from the group consisting of hydroxy and amino; (β) a nitrogen-containing heterocyclic group which may be substituted with one to three substituents selected from the group consisting of lower alkyl which may be substituted with hydroxy, oxo, hydroxy, sulfanyl, amino, (lower alkyl)thio and formyl; and (γ) NR 11C R 12C , wherein R 11C and R 12C are the same or different, and each represents lower alkanoyl which may be substituted with amino, cycloalkyl, lower alkyl, or a hydrogen atom; (2) di-(lower alkyl)amino, or (3) lower alkenyl; (c) COR 8C 1 , wherein R 8C represents a nitrogen-containing aliphatic heterocyclic group); or (d) a hydrogen atom, or

(iii) CONHR 9C , wherein R 9C represents lower alkyl which may be substituted with one or two substituents selected from the group consisting of hydroxy and carbamoyl.

6. The method according to claim 1 , wherein R 4 is NHR 6B , wherein R 6B has the same meaning as that mentioned above.

7. The method according to claim 1 , wherein R 4 is NHR 6C , wherein R 6C has the same meaning as that mentioned above.

8. The method according to claim 1 , wherein R 4 is NHSO 2 R 7 , wherein R 7 has the same meaning as that mentioned above.

9. The method according to claim 1 , wherein R 4 is NHSO 2 R 7B , wherein R 7B has the same meaning as that mentioned above.

10. The method according to claim 1 , wherein R 4 is NHSO 2 R 7C , wherein R 7C has the same meaning as that mentioned above.

11. The method according to claim 1 , wherein R 4 is CONHR 9C , wherein R 9C has the same meaning as that mentioned above.

12. The method according to claim 1 , wherein R 4 is NHR 6D , wherein R 6D represents lower alkyl which may be substituted with one or two substituents selected from the group consisting of hydroxy and NR 11B R 12B , wherein R 11B and R 12B have the same meanings as those mentioned above, respectively, or a hydrogen atom.

13. The method according to claim 1 , wherein R 5 is phenyl.

14. The method according to claim 1 , wherein R 3 is methyl, ethyl, isopropyl or tert-butyl.

15. The method according to claim 1 , wherein R 0 is —NR 1 COR 2 , wherein R 1 and R 2 have the same meanings as those mentioned above, respectively.

16. The method according to claim 15 , wherein R 1 is a hydrogen atom.

17. The method according to claim 16 , wherein R 2 is methyl or tert-butyl.

18. The method according to claim 15 , wherein R 1 and R 2 are combined together to represent trimethylene or tetramethylene.

19. The method according to claim 1 , wherein R 0 is aryl which may be substituted with one to three substituents selected from the group consisting of halogen, hydroxy, lower alkyl and cyano.

20. The method according to claim 1 , wherein R 0 is aryl which may be substituted with halogen.

21. The method according to claim 1 , wherein n is 1 or 2.

22. The method according to claim 2 , wherein the thiadiazoline derivative is a thiadiazoline derivative represented by any one of the following formulas (a) to (r):

23. A thiadiazoline derivative represented by the general formula (0A):

wherein, nA represents an integer of 1 to 3,

R 0A represents (i) aryl which may be substituted with one to three substituents selected from the group consisting of halogen, hydroxy, cyano and lower alkyl, or (ii) —NR 1 COR 2 , wherein R 1 represents a hydrogen atom, R 2 represents lower alkyl, or R 1 and R 2 are combined together to represent alkylene,

R 3A represents lower alkyl,

R 4A represents NHSO 2 R 7AA , wherein R 7AA represents lower alkyl substituted with a nitrogen-containing heterocyclic group which may be substituted with one to three substituents selected from the group consisting of lower alkyl which may be substituted with hydroxy, amino, (lower alkyl)amino, or di-(lower alkyl)amino, oxo, hydroxy, sulfanyl, amino, lower alkoxy, methylenedioxy, ethylenedioxy, (lower alkyl)thio, (lower alkyl)amino, di-(lower alkyl)amino, lower alkyl, aryl, formyl and lower alkanoyl, provided that when R 0A is 2,2-dimethylpropanoylamino, R 3A is methyl, and nA is 1, R 7AA is not morpholinoethyl,

R 5A represents aryl which may be substituted with one to three substituents selected from the group consisting of halogen, hydroxy, lower alkoxynitro, amino, cyano and carboxy,

or a pharmaceutically acceptable salt thereof.