1,3,4-oxadiazole sulfamide derivative compounds as histone deacetylase 6 inhibitor, and the pharmaceutical composition comprising the same
The present invention relates to novel compounds having histone deacetylase 6 (HDAC6) inhibitory activity, stereoisomers thereof or pharmaceutically acceptable salts thereof, the use thereof for the preparation of therapeutic medicaments, pharmaceutical compositions containing the same, a method for treating diseases using the composition, and methods for preparing the novel compounds. The novel compounds, stereoisomers thereof or pharmaceutically acceptable salts thereof according to the present invention have histone deacetylase (HDAC) inhibitory activity and are effective for the prevention or treatment of HDAC6-mediated diseases, including infectious diseases; neoplasms; endocrine, nutritional and metabolic diseases; mental and behavioral disorders; neurological diseases; diseases of the eye and adnexa; cardiovascular diseases; respiratory diseases; digestive diseases; diseases of the skin and subcutaneous tissue; diseases of the musculoskeletal system and connective tissue; or congenital malformations, deformations and chromosomal abnormalities.
1. A 1,3,4-oxadiazole sulfamide compound represented by the following formula I:
wherein L 1 , L 2 and L 3 are each independently a bond or -(C 1 -C 2 alkylene)-;
Z 1 to Z 4 are each independently N or CR Z , wherein R Z is —H or —X;
R 1 is —CX 2 H or —CX 3 ;
R 2 is
wherein Y is —N—, —O— or —S(═O) 2 —,
a to d are each independently an integer of 1, 2 or 3,
Ra to Rd are each independently —H or -(C 1 -C 4 alkyl),
the dotted line is a single bond or a double bond,
R 4 and R 5 are each independently -H, -X, -(C 1 -C 4 alkyl), -aryl or —NReRf, provided that when the dotted line is a double bond, R 5 is null,
Re and Rf are each independently —H or -(C 1 -C 4 alkyl),
when Y is —N—, R 6 and R 7 are each independently -H, -(C 1 -C 4 alkyl), -(C 1 -C 4 alkyl)-O—(C 1 -C 4 alkyl), —C(═O)-(C 1 -C 4 alkyl), —C(═O)—O(C 1 -C 4 alkyl), —C(═O)—CF 3 , -(C 1 -C 4 alkyl)-C(═O)—O(C 1 -C 4 alkyl), —S(═O) 2 -(C 1 -C 4 alkyl), -(C 3 -C 7 cycloalkyl), -(C 2 -C 6 heterocycloalkyl), -aryl, -(C 1 -C 4 alkyl)-aryl, -heteroaryl or amine protecting group, wherein at least one H of the -(C 1 -C 4 alkyl) may be substituted with —X or —OH, at least one H of the -aryl, —(C 1 -C 4 alkyl)-aryl or -heteroaryl may be substituted with —X, —OH or —CF 3 , and the -(C 2 -C 6 heterocycloalkyl) may contain an N, O or S atom in the ring,
and when Y is —O— or —S(═O) 2 —, R 6 and R 7 are null,
R 8 and R 9 are each independently -H, -(C 1 -C 4 alkyl), -(C 3 -C 7 cycloalkyl), -(C 2 -C 6 heterocycloalkyl), -(C 1 -C 4 alkyl)-(C 2 -C 6 heterocycloalkyl), -aryl, -heteroaryl or -(C 1 -C 4 alkyl)-aryl, wherein at least one H of the -(C 3 -C 7 cycloalkyl), -(C 2 -C 6 heterocycloalkyl), -(C 1 -C 4 alkyl)-(C 2 -C 6 heterocycloalkyl), -aryl, -heteroaryl or -(C 1 -C 4 alkyl) -aryl may be substituted with -(C 1 -C 4 alkyl), —C(═O)-(C 1 -C 4 alkyl), —S(═O) 2 -(C 1 -C 4 alkyl) or -(C 2 -C 6 heterocycloalkyl); and
R 3 is —H, -(C 1 -C 4 alkyl), -(C 1 -C 4 alkyl) -O(C 1 -C 4 alkyl), -(C 1 -C 4 alkyl) -C(═O)—O(C 1 -C 4 alkyl), -(C 3 -C 7 cycloalkyl), -aryl, -heteroaryl or
wherein at least one H of the -(C 3 -C 7 cycloalkyl), -aryl or -heteroaryl may be substituted with —X, —OH, -(C 1 -C 4 alkyl), —CF 3 , -(C 1 -C 4 alkyl)-(C 2 -C 6 heterocycloalkyl)-(C 1 -C 4 alkyl), —C(═O)-(C 1 -C 4 alkyl), —C(═O)—O(C 1 -C 4 alkyl), -O(C 1 -C 4 alkyl), -OCF 3 , —S(═O) 2 -(C 1 -C 4 alkyl), -aryl, -heteroaryl or —NR 11 R 12 ,
R 11 and R 12 are each independently —H or -(C 1 -C 4 alkyl),
R 1 , L 1 , Z 1 , Z 2 , Z 3 and Z 4 are as defined above; and
X is F, Cl, Br or I; and stereoisomers and pharmaceutically acceptable salts thereof.
2. The 1,3,4-oxadiazole sulfamide compound according to claim 1 ,
wherein L 1 and L 3 are each independently a bond;
L 2 is -(C 1 alkylene)-;
Z 1 to Z 4 are each independently N or CR Z , wherein R Z is —H or —X;
R 1 is —CX 2 H or —CX 3 ;
R 2 is
wherein Y is —N—, —O— or —S(═O) 2 -,
a to d are each independently an integer of 1 or 2,
Ra to Rd are each independently —H or -(C 1 -C 4 alkyl),
when Y is —N—, R 6 and R 7 are each independently -H, -(C 1 -C 4 alkyl), —C(═O)-(C 1 -C 4 alkyl), —S(═O) 2 -(C 1 -C 4 alkyl), -(C 3 -C 7 cycloalkyl) or -(C 2 -C 6 heterocycloalkyl), wherein at least one H of -(C 1 -C 4 alkyl) may be substituted with —X or —OH, and -(C 2 -C 6 heterocycloalkyl) may contain an N, O or S atom in the ring,
and when Y is —O— or —S(═O) 2 —, R 6 and R 7 are null,
R 8 and R 9 are each independently -H, -(C 1 -C 4 alkyl) or -(C 1 -C 4 alkyl)-(C 2 -C 6 heterocycloalkyl), wherein at least one H of the —(C 1 -C 4 alkyl)-(C 2 -C 6 heterocycloalkyl) may be substituted with —(C 1 -C 4 alkyl), —C(═O)-(C 1 -C 4 alkyl), —S(═O) 2 -(C 1 -C 4 alkyl) or -(C 2 -C 6 heterocycloalkyl);
R 3 is -aryl or -heteroaryl, wherein at least one H of the -aryl or -heteroaryl may be substituted with —X; and
X is F, Cl, Br or I.
3. The 1,3,4-oxadiazole sulfamide compound according to claim 2 ,
wherein L 1 or L 3 are each independently a bond;
L 2 is -(C 1 alkylene)-;
Z 1 to Z 4 are each independently N or CR Z , wherein R Z is —H or —X;
R 1 is —CF 2 H or —CF 3 ;
R 2 is
wherein Y is —N— or —S(═O) 2 -,
a to d are each independently an integer of 1 or 2,
Ra to Rd are each independently —H or -(C 1 -C 4 alkyl),
when Y is —N—, R 6 and R 7 are each independently -H, -(C 1 -C 4 alkyl), —C(═O)-(C 1 -C 4 alkyl), —S(═O) 2 -(C 1 -C 4 alkyl), -(C 3 -C 7 cycloalkyl) or -(C 2 -C 6 heterocycloalkyl), wherein at least one H of the -(C 1 -C 4 alkyl) may be substituted with —X or —OH, and the —(C 2 -C 6 heterocycloalkyl) may contain an N, O or S atom in the ring,
and when Y is —S(═O) 2 —, R 6 and R 7 are null;
R 3 is -aryl or -heteroaryl, wherein at least one H of the -aryl or -heteroaryl may be substituted with —X; and
X is F, Cl, Br or I.
4. The 1,3,4-oxadiazole sulfamide compound according to claim 3 ,
wherein L 1 or L 3 are each independently a bond;
L 2 is -(C 1 alkylene)-;
Z 1 to Z 4 are each independently N or CR Z , wherein R Z is —H or —X;
R 1 is —CF 2 H or —CF 3 ;
R 2 is
wherein Y is —N— or —S(═O) 2 -,
a and b are 2, c and d are 1,
Ra to Rd are each independently —H or -(C 1 -C 4 alkyl),
when Y is —N—, R 6 and R 7 are each independently -H, -(C 1 -C 4 alkyl), —C(═O)-(C 1 -C 4 alkyl), —S(═O) 2 -(C 1 -C 4 alkyl), -(C 3 -C 7 cycloalkyl) or -(C 2 -C 6 heterocycloalkyl), wherein at least one H of the -(C 1 -C 4 alkyl) may be substituted with —X or —OH, and the —(C 2 -C 6 heterocycloalkyl) may contain an N, O or S atom in the ring,
and when Y is —S(═O) 2 —, R 6 and R 7 are null;
R 3 is -aryl or -heteroaryl, wherein at least one H of the -aryl or -heteroaryl may be substituted with —F; and
X is F or Cl.
5. A 1,3,4-oxadiazole sulfamide compound selected from the group consisting of the compounds set forth below, and stereoisomers and pharmaceutically acceptable salts thereof:
Ex.
Comp.
Structure
1
11198
2
11199
3
11293
4
11294
5
11295
6
11296
7
11297
8
11298
9
11299
10
11300
11
11301
12
11302
13
11303
14
11304
15
11305
16
11306
17
11307
18
11308
19
11309
20
11310
21
11311
22
11312
23
11313
24
11314
25
11315
26
11316
27
11317
28
11318
29
11319
30
11320
31
11321
32
11322
33
11363
34
11379
35
11440
36
11498
37
11527
38
11528
39
11574
40
11575
41
11640
42
11641
43
11642
44
11643
45
11644
46
11651
47
11652
48
11653
49
11654
50
11659
51
11660
52
11661
53
11662
54
11670
55
11671
56
11672
57
11673
58
11674
59
11702
60
11704
61
11713
62
11714
63
11787
64
11788
65
11789
66
11823
67
11824
68
11825
69
11826
70
11827
71
11828
72
11829
73
11830
74
11831
75
11832
76
11833
6. A 1,3,4-oxadiazole sulfamide compound according to claim 5 , selected from the group consisting of the compounds set forth below:
Ex.
Comp.
Structure
11
11301
12
11302
13
11303
15
11305
16
11306
17
11307
18
11308
23
11313
24
11314
25
11315
26
11316
28
11318
31
11321
33
11363
34
11379
35
11440
36
11498
39
11574
40
11575
42
11641
48
11653
49
11654
50
11659
53
11662
54
11670
55
11671
56
11672
66
11823
67
11824
68
11825
69
11826
70
11827
71
11828
72
11829
73
11830
74
11831
75
11832
76
11833
7. A 1,3,4-oxadiazole sulfamide compound according to claim 6 , selected from the group consisting of the compounds set forth below:
Ex.
Comp.
Structure
11
11301
12
11302
13
11303
15
11305
16
11306
23
11313
24
11314
25
11315
26
11316
33
11363
34
11379
35
11440
36
11498
39
11574
42
11641
49
11654
50
11659
54
11670
55
11671
56
11672
68
11825
72
11829
73
11830
74
11831
75
11832
8. A pharmaceutical composition comprising, as an active ingredient, a compound according to claim 1 and stereoisomers and pharmaceutically acceptable salts thereof.