Bach1 inhibitors in combination with Nrf2 activators and pharmaceutical compositions thereof

1. A method of treatment of a condition, comprising administering an Nrf2 activator and a Bach1 Inhibitor to a subject in need thereof,

wherein the condition is selected from the group consisting of psoriasis, scleroderma, chronic kidney disease (CKD), asthma, chronic obstructive pulmonary disorder (COPD), fibrosis, inflammatory arthritis disease, inflammatory bowel disease (IBD), multiple sclerosis, clinically isolated syndrome (CIS), amyotrophic lateral sclerosis, Alzheimer's disease, dementia, Huntington's disease, and Parkinson's disease;

wherein the Nrf2 Activator is selected from the group consisting of

a fumaric acid mono- and/or dialkyl ester, methyl 2-cyano-3,12-dioxooleana-1,9(11)dien-28-oate, ethyl 2-cyano-3,12-dioxooleana-1,9(11)dien-28-oate, 2-cyano-3,12-dioxooleana-1,9(11)dien-28-oic acid, 1[2-Cyano-3,12-dioxooleana-1,9(11)-dien-28-oyl]imidazole, and 2-cyano-N-methyl-3,12-dioxooleana-1,9(11)-dien-28 amide,

wherein the Bach1 Inhibitor is a compound of Formula (I) or a pharmaceutically acceptable salt thereof,

wherein

X 1 is ═N—;

G is hydrogen, —C 1-8 alkyl, —C 3-10 cycloalkyl, —C 1-6 alkylene-C 3-10 cycloaklyl, heterocyclyl, —C 1-6 alkylene-C 3-10 heterocyclyl, phenyl, heteroaryl, or NR h R k , where the alkyl, alkylene, cycloalkyl, heterocyclyl, phenyl, and heteroaryl groups are optionally substituted one or more times with substituents independently selected from R c ; or G is —CH 2 Y 3 , —CH 2 CH 2 Y 3 , —CH 2 CH 2 CH 2 Y 3 , —CH(CH 3 )CH 2 Y 3 , —CH 2 CH(Y 3 )CH 3 , —CH(Y 3 )CH 3 , —CH 2 C(Y 3 )(CH 3 ) 2 , —C(Y 3 )(CH 3 ) 2 , or

where Y 3 is cyclopropyl, —CF 3 , —OCF 3 , —OCH 3 , —OCH 2 CH 3 , —F, —Cl, —OH, —O(CH 2 ) 2 —OH, —O(CH 2 ) 2 —F, —SCH 3 , —S(O) 2 —CH 3 , —SCH 2 CH 3 , —S(O) 2 CH 2 CH 3 , —NH—CH 3 , —NH—CH 2 CH 3 , —N(CH 3 ) 2 , tetrahydropyran-4-yl, tetrahydrofuran-2-yl, morpholin-2-yl, morpholin-4-yl, piperidin-1-yl, 4-hydroxy-piperidin-1-yl, 3-hydroxy-piperidin-1-yl, —NH—C(O)—CH 3 , —NH—C(O)—CH 2 CH 3 , tetrahydrofuran-2-yl-methyloxy, or —C(O)—Y 4 , where Y 4 is —OH, —OCH 3 , —OCH 2 CH 3 , —OC(CH 3 ) 3 , —NH 2 , —NH—CH 3 , —NH—CH 2 CH 3 , —N(CH 3 ) 2 , —N(CH 2 CH 3 ) 2 , morpholin-4-yl, 4-methyl-piperazin-1-yl, pyrrolidin-1-yl, or piperazin-1-yl;

L is —CH 2 —C(O)N(R 6 )—, —C(O)N(R 6 )—, —C(O)—O—, —SO 2 —, —C(O)—, heteroarylene optionally substituted one or more times with substituents independently selected from R x , or heterocyclylene optionally substituted one or more times with substituents independently selected from R x ; or the group -L-G is -cyano;

R 1 is hydrogen, R a , phenyl, or heteroaryl, where the phenyl and heteroaryl groups are optionally substituted one or more times with substituents independently selected from R x ;

R 2 is R b ;

R 3 is hydrogen, —C 1-6 alkyl, or —C 1-6 alkylene-C 3-10 cycloaklyl, where the alkyl, alkylene, and cycloalkyl groups are optionally substituted one or more times with substituents independently selected from R z ;

R 4 is —C 1-6 alkyl or —C 1-6 alkylene-C 3-10 cycloaklyl, where the alkyl, alkylene, and cycloalkyl groups are optionally substituted one or more times with substituents independently selected from BY;

R 6 is hydrogen, —C 1-6 alkyl, —C 1-6 alkylene-C 3-10 cycloaklyl, where the alkyl, alkylene, and cycloalkyl groups are optionally substituted one or more times with substituents independently selected from R x ;

R a is

a) -halogen,

b) —C 1-6 alkyl,

c) —C 3-10 cycloalkyl,

d) -heterocyclyl,

e) -cyano,

f) —CF 3 ,

g) —OCF 3 ,

h) —O—R d ,

i) —S(O) w —R d ,

j) —S(O) 2 O—R d ,

k) —NR d R e ,

l) —C(O)—R d ,

m) —C(O)—O—R d ,

n) —OC(O)—R d ,

o) —C(O)NR d R e ,

p) —C(O)-heterocyclyl,

q) —NR d C(O)R e ,

r) —OC(O)NR d R e ,

s) —NR d C(O)OR d , or

t) —NR d C(O)NR d R e ,

where the alkyl, cycloalkyl, and heterocyclyl groups are optionally substituted one or more times with substituents independently selected from BY;

R b is

a) -halogen,

b) —C 1-6 alkyl,

c) —C 3-10 cycloalkyl,

d) -heterocyclyl,

e) -phenyl,

f) -heteroaryl,

g) -cyano,

h) —CF 3 ,

i) —OCF 3 ,

j) —O—R f ,

k) —S(O) w —R f ,

l) —S(O) 2 O—R f ,

m) —NR f R g ,

n) —C(O)—R f ,

o) —C(O)—O—R f ,

p) —OC(O)—R f ,

q) —C(O)NR f R g ,

r) —C(O)-heterocyclyl,

s) —NR f C(O)R g ,

t) —OC(O)NR f R g ,

u) —NR f C(O)OR f , or

v) —NR f C(O)NR f R g ,

where the alkyl, cycloalkyl, heterocyclyl, phenyl, and heteroaryl groups are optionally substituted one or more times with substituents independently selected from R z ;

R c is

a) -halogen,

b) —C 1-6 alkyl,

c) —C 3-10 cycloalkyl,

d) -heterocyclyl,

e) -cyano,

f) —CF 3 ,

g) —OCF 3 ,

h) —O—R h ,

i) —S(O) w —R h ,

j) —S(O) 2 O—R h ,

k) —NR h R k ,

l) —C(O)—R h ,

m) —C(O)—O—R h ,

n) —OC(O)—R h ,

o) —C(O)NR h R k ,

p) —C(O)-heterocyclyl,

q) —NR h C(O)R k ,

r) —OC(O)NR h R k ,

s) —NR h C(O)OR k ,

t) —NR h C(O)NR h R k ,

u) —NR h S(O) w R k ,

v) -phenyl,

w) -heteroaryl, or

x) —O—(C 1-4 alkylene)-O—(C 1-4 alkylene)-N(R h )C(O)—OR k ,

where the alkylene, alkyl, cycloalkyl, heterocyclyl, phenyl, and heteroaryl groups are optionally substituted one or more times with substituents independently selected from R x ;

R d and R e are independently hydrogen, C 1-6 alkyl, or C 3-10 cycloalkyl, where the alkyl and cycloalkyl groups are optionally substituted one or more times with substituents independently selected from R y ; or, if R d and R e are both attached to the same nitrogen atom, together with that nitrogen atom may optionally form a heterocyclic ring selected from the group consisting of azetidino, pyrrolidino, pyrazolidino, imidazolidino, oxazolidino, isoxazolidino, thiazolidino, isothiazolidino, piperidino, piperazino, morpholino, thiomorpholino, and azepano, where each ring is optionally substituted one or more times with substituents independently selected from R y ;

R f and R g are independently hydrogen, C 1-6 alkyl, C 3-10 cycloalkyl, phenyl, or heteroaryl, where the alkyl, cycloalkyl, phenyl, and heteroaryl groups are optionally substituted one or more times with substituents independently selected from R z ; or, if R f and R g are both attached to the same nitrogen atom, together with that nitrogen atom may optionally form a heterocyclic ring selected from the group consisting of azetidino, pyrrolidino, pyrazolidino, imidazolidino, oxazolidino, isoxazolidino, thiazolidino, isothiazolidino, piperidino, piperazino, morpholino, thiomorpholino, and azepano, where each ring is optionally substituted one or more times with substituents independently selected from R z ;

R h and R k are independently hydrogen, C 1-6 alkyl, C 3-10 cycloalkyl, heterocyclyl, phenyl, or heteroaryl, where the alkyl, cycloalkyl, heterocyclyl, phenyl, and heteroaryl groups are optionally substituted one or more times with substituents independently selected from R x ; or, if R h and R k are both attached to the same nitrogen atom, together with that nitrogen atom may optionally form a heterocyclic ring selected from the group consisting of azetidino, pyrrolidino, pyrazolidino, imidazolidino, oxazolidino, isoxazolidino, thiazolidino, isothiazolidino, piperidino, piperazino, morpholino, thiomorpholino, and azepano, where each ring is optionally substituted one or more times with substituents independently selected from R x ;

R y is

a) -halogen,

b) —NH 2 ,

c) -cyano,

d) -carboxy,

e) -hydroxy,

f) -thiol,

g) —CF 3 ,

h) —OCF 3 ,

i) —C(O)—NH 2 ,

j) —S(O) 2 —NH 2 ,

k) oxo,

l) —C 1-6 alkyl, optionally substituted one or more times with substituents selected independently from the group consisting of halogen, —OH, —O—C 1-6 alkyl, —NH 2 , —NH—C 1-6 alkyl, and —N(C 1-6 alkyl) 2 ,

m) -heterocyclyl optionally substituted one or more times with substituents selected independently from the group consisting of halogen, —OH, —O—C 1-6 alkyl, —NH 2 , —NH—C 1-6 alkyl, and —N(C 1-6 alkyl) 2 ,

n) —C 3-10 cycloalkyl optionally substituted one or more times with substituents selected independently from the group consisting of halogen, —OH, —O—C 1-6 alkyl, —NH 2 , —NH—C 1-6 alkyl, and —N(C 1-6 alkyl) 2 ,

o) —O—C 1-6 alkyl optionally substituted one or more times with substituents selected independently from the group consisting of halogen, —OH, —O—C 1-6 alkyl, —NH 2 , —NH—C 1-6 alkyl, and —N(C 1-6 alkyl) 2 ,

p) —O—C 3-10 cycloalkyl optionally substituted one or more times with substituents selected independently from the group consisting of halogen, —OH, —O—C 1-6 alkyl, —NH 2 , —NH—C 1-6 alkyl, and —N(C 1-6 alkyl) 2 ,

q) —NH—C 1-6 alkyl optionally substituted one or more times with substituents selected independently from the group consisting of halogen, —OH, —O—C 1-6 alkyl, —NH 2 , —NH—C 1-6 alkyl, and —N(C 1-6 alkyl) 2 ,

r) —N(C 1-6 alkyl) 2 optionally substituted one or more times with substituents selected independently from the group consisting of halogen, —OH, —O—C 1-6 alkyl, —NH 2 , —NH—C 1-6 alkyl, and —N(C 1-6 alkyl) 2 ,

s) —C(O)—C 1-6 alkyl, optionally substituted one or more times with substituents selected independently from the group consisting of halogen, —OH, —O—C 1-6 alkyl, —NH 2 , —NH—C 1-6 alkyl, and —N(C 1-6 alkyl) 2 ,

t) —C(O)—O—C 1-6 alkyl, optionally substituted one or more times with substituents selected independently from the group consisting of halogen, —OH, —O—C 1-6 alkyl, —NH 2 , —NH—C 1-6 alkyl, and —N(C 1-6 alkyl) 2 ,

u) —S—C 1-6 alkyl, optionally substituted one or more times with substituents selected independently from the group consisting of halogen, —OH, —O—C 1-6 alkyl, —NH 2 , —NH—C 1-6 alkyl, and —N(C 1-6 alkyl) 2 ,

v) —S(O) 2 —C 1-6 alkyl, optionally substituted one or more times with substituents selected independently from the group consisting of halogen, —OH, —O—C 1-6 alkyl, —NH 2 , —NH—C 1-6 alkyl, and —N(C 1-6 alkyl) 2 ,

w) —C(O)—NH—C 1-6 alkyl, optionally substituted one or more times with substituents selected independently from the group consisting of halogen, —OH, —O—C 1-6 alkyl, —NH 2 , —NH—C 1-6 alkyl, and —N(C 1-6 alkyl) 2 ,

x) —C(O)—N(C 1-6 alkyl) 2 , optionally substituted one or more times with substituents selected independently from the group consisting of halogen, —OH, —O—C 1-6 alkyl, —NH 2 , —NH—C 1-6 alkyl, and —N(C 1-6 alkyl) 2 ,

y) —S(O) 2 —NH—C 1-6 alkyl, optionally substituted one or more times with substituents selected independently from the group consisting of halogen, —OH, —O—C 1-6 alkyl, —NH 2 , —NH—C 1-6 alkyl, and —N(C 1-6 alkyl) 2 ,

z) —S(O) 2 —N(C 1-6 alkyl) 2 , optionally substituted one or more times with substituents selected independently from the group consisting of halogen, —OH, —O—C 1-6 alkyl, —NH 2 , —NH—C 1-6 alkyl, and —N(C 1-6 alkyl) 2 ,

aa) —NH—C(O)—C 1-6 alkyl, optionally substituted one or more times with substituents selected independently from the group consisting of halogen, —OH, —O—C 1-6 alkyl, —NH 2 , —NH—C 1-6 alkyl, and —N(C 1-6 alkyl) 2 , or

bb) —NH—S(O) 2 —C 1-6 alkyl, optionally substituted one or more times with substituents selected independently from the group consisting of halogen, —OH, —O—C 1-6 alkyl, —NH 2 , —NH—C 1-6 alkyl, and —N(C 1-6 alkyl) 2 ;

R x is

a) —R y

b) -phenyl, optionally substituted one or more times with substituents selected independently from the group consisting of halogen, —OH, —O—C 1-6 alkyl, —NH 2 , —NH—C 1-6 alkyl, and —N(C 1-6 alkyl) 2 ,

c) -heteroaryl, optionally substituted one or more times with substituents selected independently from the group consisting of halogen, —OH, —O—C 1-6 alkyl, —NH 2 , —NH—C 1-6 alkyl, and —N(C 1-6 alkyl) 2 ,

d) —O-phenyl,

e) —O-heteroaryl,

f) —C(O)-phenyl,

g) —C(O)-heteroaryl,

h) —C(O)—O-phenyl, or

i) —C(O)—O-heteroaryl;

R z is

a) —R y

b) -phenyl,

c) -heteroaryl;

d) —O-phenyl,

e) —O-heteroaryl,

f) —C(O)-phenyl,

g) —C(O)-heteroaryl,

h) —C(O)—O-phenyl, or

i) —C(O)—O-heteroaryl;

v is an integer from 0 to 4, and

w is an integer from 0 to 2.

2. The method of claim 1 , wherein the Nrf2 activator is a selected from the group consisting of monomethyl hydrogen fumarate, dimethyl fumarate (DMF), monoethyl hydrogen fumarate, and diethyl fumarate.

3. The method of claim 1 , wherein the Nrf2 activator is methyl 2-cyano-3,12-dioxooleana-1,9(11)dien-28-oate.

4. The method of claim 1 , wherein the Bach1 Inhibitor is

3-Methyl-2-(6-trifluoromethoxy-benzothiazol-2-ylamino)-3H-imidazo[4,5-b]pyridine-6-carboxylic acid (2-methoxy-ethyl)-amide or a pharmaceutically acceptable salt thereof.

5. The method of claim 1 , wherein the Bach1 Inhibitor is

3-Methyl-2-(6-trifluoromethoxy-benzothiazol-2-ylamino)-3H-imidazo[4,5-b]pyridine-6-carboxylic acid dimethylcarbamoylmethyl-amide or a pharmaceutically acceptable salt thereof.

6. The method of claim 1 , wherein the Bach1 Inhibitor is

3-Methyl-2-(6-trifluoromethoxy-benzothiazol-2-ylamino)-3H-imidazo[4,5-b]pyridine-6-carboxylic acid (2-morpholin-4-yl-ethyl)-amide or a pharmaceutically acceptable salt thereof.

7. The method of claim 1 , wherein the Bach1 Inhibitor is

3-Methyl-2-(6-trifluoromethoxy-benzothiazol-2-ylamino)-3H-imidazo[4,5-b]pyridine-6-carboxylic acid (2-hydroxy-propyl)-amide or a pharmaceutically acceptable salt thereof.