Pyrido[3,4-B]indoles and methods of use
View Patent ↗This disclosure relates to new heterocyclic compounds that may be used to modulate a histamine receptor in an individual. Pyrido[3,4-b]indoles are described, as are pharmaceutical compositions comprising the compounds and methods of using the compounds in a variety of therapeutic applications, including the treatment of a cognitive disorder, psychotic disorder, neurotransmitter-mediated disorder and/or a neuronal disorder.
1. A compound of the formula (I):
wherein:
R 1 and R 2a are taken together to form an ethylene (—CH 2 CH 2 —) moiety;
R 2b is H, substituted or unsubstituted C 1 -C 8 alkyl, halo, cyano, hydroxyl, alkoxy, or nitro;
each R 3a and R 3b is independently H, substituted or unsubstituted C 1 -C 8 alkyl, halo, cyano, nitro, hydroxyl, alkoxy, substituted or unsubstituted amino, cycloalkyl, aryl, heteroaryl, heterocyclyl, acylamino or acyloxy or R 3a and R 3b are taken together with the carbon to which they are attached to form a carbonyl moiety or a cycloalkyl moiety;
each R 10a and R 10b is independently H, substituted or unsubstituted C 1 -C 8 alkyl, halo, hydroxyl, alkoxy, cyano, nitro or R 10a and R 10b are taken together with the carbon to which they are attached to form a carbonyl moiety or a cycloalkyl moiety;
each X 7 , X 8 , X 9 and X 10 is independently CR 4 ;
each R 4 is independently H, hydroxyl, nitro, cyano, halo, C 1 -C 8 perhaloalkyl, substituted or unsubstituted C 1 -C 8 alkyl, substituted or unsubstituted C 2 -C 8 alkenyl, substituted or unsubstituted C 2 -C 8 alkynyl, substituted or unsubstituted aryl, substituted or unsubstituted heteroaryl, C 1 -C 8 perhaloalkoxy, C 1 -C 8 alkoxy, aryloxy, carboxyl, carbonylalkoxy, thiol, substituted or unsubstituted heterocyclyl, substituted or unsubstituted aralkyl, thioalkyl, substituted or unsubstituted amino, acylamino, aminoacyl, aminocarbonylamino, aminocarbonyloxy, aminosulfonyl, sulfonylamino, sulfonyl, carbonylalkylenealkoxy, alkylsulfonylamino or acyl;
q is 0 or 1;
m is 1;
n is 1;
each R 8a , R 8b , R 8c , R 8d , R 8e and R 8f is independently H, hydroxyl, alkoxy, halo, substituted or unsubstituted C 1 -C 8 alkyl, substituted or unsubstituted C 3 -C 8 cycloalkyl, substituted or unsubstituted C 2 -C 8 alkenyl, C 1 -C 8 perhaloalkyl, carboxyl, carbonylalkoxy, substituted or unsubstituted aryl, substituted or unsubstituted heteroaryl, or is taken together with a geminal R 8(a-f) to form a substituted or unsubstituted methylene moiety or a moiety of the formula —OCH 2 CH 2 O—, or is taken together with a geminal R 8(a-f) and the carbon to which they are attached to form a carbonyl moiety or a cycloalkyl moiety, or is taken together with a vicinal R 8(a-f) and the carbon atoms to which they are attached to form a substituted or unsubstituted C 3 -C 8 cycloalkyl, substituted or unsubstituted C 3 -C 8 cycloalkenyl, or substituted or unsubstituted heterocyclyl moiety, or is taken together with a vicinal R 8(a-f) to form a bond provided when an R 8(a-f) is taken together with a vicinal R 8(a-f) to form a bond, the geminal R 8(a-f) is other than hydroxyl; and
Q is substituted aryl, substituted or unsubstituted heteroaryl, substituted or unsubstituted C 3 -C 8 cycloalkyl, substituted or unsubstituted C 3 -C 8 cycloalkenyl, substituted or unsubstituted heterocyclyl, substituted or unsubstituted amino, alkoxy, aminoacyl, acyloxy, carboxyl, carbonylalkoxy, cyano, alkynyl, aminocarbonylalkoxy or acylamino;
or a pharmaceutically acceptable salt thereof.
2. The compound of claim 1 , wherein q is 0 and m is 1, or a pharmaceutically acceptable salt thereof.
3. The compound of claim 2 , wherein X 7 , X 8 and X 10 are CR 4 where R 4 is H, or a pharmaceutically acceptable salt thereof.
4. The compound of claim 1 , wherein X 8 and X 10 are CR 4 where R 4 is H; q is 0; and R 8c and R 8d are both H, or a pharmaceutically acceptable salt thereof.
5. A compound of the formula (A):
wherein:
R 1 and R 2a are taken together to form an ethylene (—CH 2 CH 2 —) moiety
H, substituted or unsubstituted C 1 -C 8 alkyl, halo, cyano, hydroxyl, alkoxy, or nitro;
each R 3a and R 3b is independently H, substituted or unsubstituted C 1 -C 8 alkyl, halo, cyano, nitro, hydroxyl, alkoxy, substituted or unsubstituted amino, cycloalkyl, aryl, heteroaryl, heterocyclyl, acylamino or acyloxy or R 3a and R 3b are taken together with the carbon to which they are attached to form a carbonyl moiety or a cycloalkyl moiety;
each R 10a and R 10b is independently H, substituted or unsubstituted C 1 -C 8 alkyl, halo, hydroxyl, alkoxy cyano, nitro, or R 10a and R 10b are taken together with the carbon to which they are attached to form a carbonyl moiety or a cycloalkyl moiety;
each X 7 , X 8 , X 9 and X 10 is independently CR 4 ;
each R 4 is independently H, hydroxyl, nitro, cyano, halo, C 1 -C 8 perhaloalkyl, substituted or unsubstituted C 1 -C 8 alkyl, substituted or unsubstituted C 2 -C 8 alkenyl, substituted or unsubstituted C 2 -C 8 alkynyl, substituted or unsubstituted aryl, substituted or unsubstituted heteroaryl, C 1 -C 8 perhaloalkoxy, C 1 -C 8 alkoxy, aryloxy, carboxyl, carbonylalkoxy, thiol, substituted or unsubstituted heterocyclyl, substituted or unsubstituted aralkyl, thioalkyl, substituted or unsubstituted amino, acylamino, aminoacyl, aminocarbonylamino, aminocarbonyloxy, aminosulfonyl, sulfonylamino, sulfonyl, carbonylalkylenealkoxy, alkylsulfonylamino or acyl;
m and q are independently 0 or 1;
each R 8a , R 8b , R 8c and R 8d is independently H, hydroxyl, halo, alkoxy, substituted or unsubstituted C 1 -C 8 alkyl, substituted or unsubstituted C 3 -C 8 cycloalkyl, substituted or unsubstituted C 2 -C 8 alkenyl, C 1 -C 8 perhaloalkyl, carboxyl, carbonylalkoxy, substituted or unsubstituted aryl, substituted or unsubstituted heteroaryl, or is taken together with a geminal R 8(a-d) to form a substituted or unsubstituted methylene moiety or a moiety of the formula —OCH 2 CH 2 O—, or is taken together with a geminal R 8(a-d) and the carbon to which they are attached to form a carbonyl moiety or a cycloalkyl moiety;
each R 11 and R 12 is independently H, halo, alkoxy, substituted or unsubstituted aryl, substituted or unsubstituted heteroaryl, substituted or unsubstituted C 1 -C 8 alkyl, substituted or unsubstituted C 2 -C 8 alkenyl, substituted or unsubstituted C 3 -C 8 cycloalkyl, carboxy, carbonylalkoxy or C 1 -C 8 perhaloalkyl and the bond indicates the presence of either an E or Z double bond configuration, or R 11 and R 12 are taken together to form a bond or are taken together with the carbon atoms to which they are attached to form a substituted or unsubstituted C 3-8 cycloalkenyl or substituted or unsubstituted heterocyclyl moiety; and
Q is substituted aryl, substituted or unsubstituted heteroaryl, substituted or unsubstituted C 3 -C 8 cycloalkyl, substituted or unsubstituted C 3 -C 8 cycloalkenyl, substituted or unsubstituted heterocyclyl, substituted or unsubstituted amino, alkoxy, aminoacyl, acyloxy, carboxyl, carbonylalkoxy, cyano, alkynyl, aminocarbonylalkoxy or acylamino;
or a pharmaceutically acceptable salt thereof.
6. A compound of the formula (II):
wherein
R 2b is H, halo, or substituted or unsubstituted C 1 -C 8 alkyl;
each R 3a and R 3b is independently H, halo, or substituted or unsubstituted C 1 -C 8 alkyl;
each R 10a and R 10b is independently H, halo, or a substituted or unsubstituted C 1 -C 8 alkyl;
p is 1;
each X 7 , X 8 , X 9 and X 10 is independently CR 4 ;
each R 4 is independently H, hydroxyl, nitro, cyano, halo, C 1 -C 8 perhaloalkyl, substituted or unsubstituted C 1 -C 8 alkyl, substituted or unsubstituted C 2 -C 8 alkenyl, substituted or unsubstituted C 2 -C 8 alkynyl, substituted or unsubstituted aryl, substituted or unsubstituted heteroaryl, C 1 -C 8 perhaloalkoxy, C 1 -C 8 alkoxy, aryloxy, carboxyl, carbonylalkoxy, thiol, substituted or unsubstituted heterocyclyl, substituted or unsubstituted aralkyl, thioalkyl, substituted or unsubstituted amino, acylamino, aminoacyl, aminocarbonylamino, aminocarbonyloxy, aminosulfonyl, sulfonylamino, sulfonyl, carbonylalkylenealkoxy, alkylsulfonylamino or acyl;
q is 0 or 1;
m is 1;
n is 1;
each R 8a , R 8b , R 8c , R 8d , R 8e and R 8f is independently H, hydroxyl, alkoxy, halo, substituted or unsubstituted C 1 -C 8 alkyl, substituted or unsubstituted C 3 -C 8 cycloalkyl, substituted or unsubstituted C 2 -C 8 alkenyl, C 1 -C 8 perhaloalkyl, carboxyl, carbonylalkoxy, substituted or unsubstituted aryl, substituted or unsubstituted heteroaryl, or is taken together with a geminal R 8(a-f) to form a substituted or unsubstituted methylene moiety or a moiety of the formula —OCH 2 CH 2 O—, or is taken together with a geminal R 8(a-f) and the carbon to which they are attached to form a carbonyl moiety or a cycloalkyl moiety, or is taken together with a vicinal R 8(a-f) and the carbon atoms to which they are attached to form a substituted or unsubstituted C 3 -C 8 cycloalkyl, substituted or unsubstituted C 3 -C 8 cycloalkenyl, or substituted or unsubstituted heterocyclyl moiety, or is taken together with a vicinal R 8(a-f) to form a bond provided when an R 8(a-f) is taken together with a vicinal R 8(a-f) to form a bond, the geminal R 8(a-f) is other than hydroxyl; and
Q is a substituted aryl, substituted or unsubstituted heteroaryl, substituted or unsubstituted C 3 -C 8 cycloalkyl, substituted or unsubstituted C 3 -C 8 cycloalkenyl, substituted or unsubstituted heterocyclyl, substituted or unsubstituted amino, alkoxy, aminoacyl, acyloxy, carboxyl, carbonylalkoxy, cyano, alkynyl, aminocarbonylalkoxy or acylamino;
or a pharmaceutically acceptable salt thereof.
7. A compound of the formula (B):
wherein:
R 2b is H, n halo, or substituted or unsubstituted C 1 -C 8 alkyl;
each R 3a and R 3b is independently H, halo, or substituted or unsubstituted C 1 -C 8 alkyl;
each R 10a and R 10b is independently H, halo, or a substituted or unsubstituted C 1 -C 8 alkyl;
p is 1;
each X 7 , X 8 , X 9 and X 10 is independently CR 4 ;
each R 4 is independently H, hydroxyl, nitro, cyano, halo, C 1 -C 8 perhaloalkyl, substituted or unsubstituted C 1 -C 8 alkyl, substituted or unsubstituted C 2 -C 8 alkenyl, substituted or unsubstituted C 2 -C 8 alkynyl, substituted or unsubstituted aryl, substituted or unsubstituted heteroaryl, C 1 -C 8 perhaloalkoxy, C 1 -C 8 alkoxy, aryloxy, carboxyl, carbonylalkoxy, thiol, substituted or unsubstituted heterocyclyl, substituted or unsubstituted aralkyl, thioalkyl, substituted or unsubstituted amino, acylamino, aminoacyl, aminocarbonylamino, aminocarbonyloxy, aminosulfonyl, sulfonylamino, sulfonyl, carbonylalkylenealkoxy, alkylsulfonylamino or acyl;
m and q are independently 0 or 1;
each R 8a , R 8b , R 8c and R 8d is independently H, hydroxyl, alkoxy, halo, substituted or unsubstituted C 1 -C 8 alkyl, substituted or unsubstituted C 3 -C 8 cycloalkyl, substituted or unsubstituted C 2 -C 8 alkenyl, C 1 -C 8 perhaloalkyl, carboxyl, carbonylalkoxy, substituted or unsubstituted aryl, substituted or unsubstituted heteroaryl, or is taken together with a geminal R 8(a-d) to form a substituted or unsubstituted methylene moiety or a moiety of the formula —OCH 2 CH 2 O—, or is taken together with a geminal R 8(a-d) and the carbon to which they are attached to form a carbonyl moiety or a cycloalkyl moiety;
each R 11 and R 12 is independently H, halo, alkoxy, substituted or unsubstituted aryl, substituted or unsubstituted heteroaryl, substituted or unsubstituted C 1 -C 8 alkyl, substituted or unsubstituted C 2 -C 8 alkenyl, substituted or unsubstituted C 3 -C 8 cycloalkyl, carboxy, carbonylalkoxy or C 1 -C 8 perhaloalkyl and the bond indicates the presence of either an E or Z double bond configuration, or R 11 and R 12 are taken together to form a bond or are taken together with the carbon atoms to which they are attached to form a substituted or unsubstituted C 3-8 cycloalkenyl or substituted or unsubstituted heterocyclyl moiety; and
Q is a substituted aryl, substituted or unsubstituted heteroaryl, substituted or unsubstituted C 3 -C 8 cycloalkyl, substituted or unsubstituted C 3 -C 8 cycloalkenyl, substituted or unsubstituted heterocyclyl, substituted or unsubstituted amino, alkoxy, aminoacyl, acyloxy, carboxyl, carbonylalkoxy, cyano, alkynyl, aminocarbonylalkoxy or acylamino;
or a pharmaceutically acceptable salt thereof.
8. A compound selected from compounds 1-3 and 5-7,
Compound #
Structure
1
2
3
5
6
7
or a pharmaceutically acceptable salt thereof.
9. A pharmaceutical composition comprising (a) a compound of claim 1 or a pharmaceutically acceptable salt thereof and (b) a pharmaceutically acceptable carrier.
10. A kit comprising a compound of claim 1 or a pharmaceutically acceptable salt thereof.
11. The compound of claim 1 , wherein the compound is selected from the group consisting of Compound Nos. 1-3, 5-45 and 71-73,
Compound #
Structure
1
2
3
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
71
72
73
or a pharmaceutically acceptable salt thereof.
12. The compound of claim 1 , wherein the compound is of the formula G-1:
wherein:
R 4 is methyl;
R 8c is H, hydroxyl, or methyl;
R 8d is H, or methyl;
or R 8c and R 8d are taken together to form a methylene moiety or an oxo moiety; and
Q is substituted or unsubstituted pyridyl; substituted phenyl; substituted or unsubstituted phenylthiazole; substituted or unsubstituted piperidyl; substituted or unsubstituted piperazinyl; substituted or unsubstituted morpholinyl or substituted amino;
or a pharmaceutically acceptable salt thereof.
13. The compound of claim 1 , wherein the compound is of the formula (Ii-5), (Ii-6) or (Ii-7):
wherein:
R 4 is halo or C 1 -C 8 alkyl;
R 9 is H or CH 3 ; and
R 8f is H or CH 3 ;
or a pharmaceutically acceptable salt thereof.
14. The compound of claim 13 , wherein R 4 is halo or CH 3 ; or a pharmaceutically acceptable salt thereof.