IP Library Granted Patent US 12,637,461
Granted Patent B2
US 12,637,461 · App. 18/484,527 · Granted May 26, 2026

Compounds for the activation of AMPK

Inventors: Gary Erik Aspnes (Biberach an der Riss, DE); Christopher Ryan Butler (Canton, MA); Matthew Frank Paul Calabrese (Old Lyme, CT); Kimberly O'keefe Cameron (Niantic, CT); John Marion Curto (Mystic, CT); Michael Eric Green (Medford, MA); Xinjun Hou (Winchester, MA); Shenping Liu (Waterford, CT); Christopher Lee Mcclendon (Newton, MA); John Charles Murray (Oakdale, CT); Advaita Panchagnula (Mystic, CT); Colin Richard Rose (Quaker Hill, CT); Kyle Thomas Tarantino (Killingsworth, CT); Meihua Mike Tu (Acton, MA); Rayomand Jal Unwalla (Bedford, MA); Joseph Scott Warmus (Ledyard, CT); Jun Xiao (Lyme, CT); Qingyi Yang (Lexington, MA); Lei Zhang (Auburndale, MA)
Assignee: Pfizer Inc.
C07D471/04A61K31/444A61K31/4545A61K31/4725A61K31/4985A61K31/501A61K31/519A61K31/5377A61K45/06C07D401/14C07D519/00
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Quick Facts
Patent No.
US 12,637,461
App. No.
18/484,527
Granted
May 26, 2026
Kind
B2
Abstract

Described herein are compounds of Formula I, wherein the variables are defined herein, their use as activators from AMPK, pharmaceutical compositions containing such compounds and their use to treat, for example, heart failure or peripheral vascular disease.

Claims (62)

1 . A compound of Formula I:

wherein:

Ar is (C 2 -C 9 )heteroaryl or phenyl; wherein Ar is optionally substituted with 1, 2, or 3 substituents selected from the group consisting of halogen, —N(R 10 )(R 11 ), —CH 2 —(NR 10 R 11 ), —(C 1 -C 6 )alkyl, —(C 1 -C 6 )hydroxyalkyl, —(C 1 -C 6 )haloalkyl, —(C 1 -C 6 )haloalkoxy, —(C 1 -C 6 )alkoxy, —OR 10 , —(C 3 -C 6 )cycloalkyl, and —(C 3 -C 6 )heterocycloalkyl;

X 1 is CH or nitrogen;

X 2 is CR 12 or nitrogen;

R 1 is hydrogen, —O—(C 1 -C 6 )alkyl, —O—(C 1 -C 6 )cycloalkyl, or —N(R 10 )(R 11 );

R 2 , R 3 , R 4 , R 5 and R 6 are each independently hydrogen, halogen, —(C 1 -C 3 )alkyl, or —N(R 10 )(R 11 );

R 7 is —H, —(C 1 -C 6 )alkyl, —(C 3 -C 6 )cycloalkyl, —OH, or —CH 2 OH;

R 8 is —(C 1 -C 6 )alkyl, —(C 0 -C 2 )alkyl-(C 3 -C 8 )cycloalkyl, —(C 0 -C 2 )alkyl-N(R 10 R 11 ), —(C 0 -C 2 )alkyl-(C 3 -C 9 )heterocycloalkyl, —(C 1 -C 6 )haloalkoxy, —(C 1 -C 6 )alkyl-(C 1 -C 6 )alkoxy, or —(C 0 -C 2 )alkyl-(C 2 -C 6 )heteroaryl; wherein R 8 is optionally substituted with 1, 2, 3, or 4 substituents selected from the group consisting of halogen, hydroxy, —(C 1 -C 6 )alkyl, —(C 1 -C 6 ) haloalkyl, —(C 1 -C 6 )alkoxy, —(C 1 -C 6 )hydroxyalkyl, —(C 1 -C 6 )haloalkoxy, —(C 1 -C 6 ) hydroxyalkoxy, and —(C 3 -C 6 )cycloalkyl;

R 9 is hydrogen or —(C 1 -C 3 )alkyl; or

R 8 and R 9 taken together form a (C 4 -C 9 )heterocycloalkyl, wherein the (C 4 -C 9 )heterocycloalkyl is optionally substituted with 1 or 2 substituents selected from the group consisting of oxo, halogen, and —(C 1 -C 6 )alkyl; and

R 10 and R 11 are each independently hydrogen, —(C 1 -C 6 )alkyl, —(C 1 -C 6 ) haloalkyl, —(C 0 -C 2 )alkyl-(C 3 -C 6 )cycloalkyl, —(C 1 -C 6 )alkyl-(C 1 -C 6 )alkoxy, or —(C 3 -C 5 )heterocycloalkyl; or wherein R 10 and R 11 form (C 3 -C 5 )heterocycloalkyl; wherein R 10 and R 11 independently are optionally substituted with 1 or 2 substituents selected from the group consisting of hydroxy, oxo, halogen, and cyclopropyl;

R 12 is hydrogen, methyl, —CH 2 OH, or halogen;

m is 1, 2, or 3;

n is 0 or 1, wherein, when n is 0 R 9 is absent;

or a pharmaceutically acceptable salt of said compound.

2 . The compound of claim 1 , wherein the compound has the formula Ia:

or a pharmaceutically acceptable salt of said compound.

3 . The compound of claim 1 , wherein Ar is (C 2 -C 6 )heteroaryl that is substituted with 1 or 2 substituents selected from the group consisting of F, —(C 1 -C 3 )alkyl, —(C 1 -C 3 )hydroxyalkyl, —NH 2 , and morpholino; or a pharmaceutically acceptable salt thereof.

4 . The compound of claim 1 , wherein Ar is pyrazolyl, imidazolyl, pyridinyl, or imidazopyridinyl and wherein Ar is optionally substituted with 1 or 2 substituents selected from the group consisting of F, —(C 1 -C 3 )alkyl, —(C 1 -C 2 )hydroxyalkyl, —NH 2 , and

or a pharmaceutically acceptable salt thereof.

5 . The compound of claim 1 , wherein at least one of m is 1 or n is 0; or a pharmaceutically acceptable salt thereof.

6 . The compound of claim 1 , wherein R 8 is —(C 0 -C 2 )alkyl-cyclopropyl substituted with 1 or 2 substituents selected from the group consisting of F, hydroxy, or —(C 1 -C 3 )alkyl; or a pharmaceutically acceptable salt thereof.

7 . The compound of claim 1 , wherein at least one of R 1 is hydrogen, R 7 is methyl, or R 8 is —(C 1 -C 3 )alkyl, —(C 0 -C 2 )alkyl-cyclopropyl, —(C 0 -C 2 )alkyl-NH(R 11 ), (C 3 -C 6 )heterocycloalkyl, or —(C 0 -C 2 )alkyl-(C 2 -C 6 )heteroaryl; wherein R 8 is optionally substituted with 1 or 2 substituents selected from the group consisting of F, hydroxy, —(C 1 -C 3 )alkyl, —(C 1 -C 2 )fluoroalkyl, —(C 1 -C 3 )alkoxy, —(C 1 -C 3 )hydroxyalkyl, and cyclopropyl; or a pharmaceutically acceptable salt thereof.

8 . The compound of claim 1 , wherein R 2 is F; R 3 is C 1 , methyl, or F; R 4 is hydrogen or F; and R 5 and R 6 are H; or a pharmaceutically acceptable salt thereof.

9 . The compound of claim 1 , wherein the compound is:

(4R)-4-(3-chloro-2-fluorophenyl)-5-fluoro-6-({1-[(1S,2S)-2-fluorocyclopropane-1-carbonyl]azetidin-3-yl}amino)-2-(4-fluoro-1-methyl-1H-pyrazol-3-yl)-4-methyl-3,4-dihydro-2,7-naphthyridin-1(2H)-one;

(4R)-4-(3-chloro-2-fluorophenyl)-5-fluoro-6-{[1-(2-hydroxy-2-methylpropanoyl)azetidin-3-yl]amino}-4-methyl-2-(1-methyl-1H-imidazol-4-yl)-3,4-dihydro-2,7-naphthyridin-1(2H)-one;

(4R)-4-(3-chloro-2-fluorophenyl)-5-fluoro-6-({1-[(1S,2S)-2-fluorocyclopropane-1-carbonyl]azetidin-3-yl}amino)-2-(3-fluoropyridin-2-yl)-4-methyl-3,4-dihydro-2,7-naphthyridin-1(2H)-one;

(4R)-4-(3-chloro-2-fluorophenyl)-5-fluoro-2-(3-fluoropyridin-2-yl)-6-{[1-(1-hydroxycyclopropane-1-carbonyl)azetidin-3-yl]amino}-4-methyl-3,4-dihydro-2,7-naphthyridin-1(2H)-one;

(4R)-4-(3-chloro-2-fluorophenyl)-5-fluoro-2-[5-(hydroxymethyl)pyridin-2-yl]-4-methyl-6-({1-[(1S,4S)-2-oxa-5-azabicyclo[2.2.1]heptane-5-carbonyl]azetidin-3-yl}amino)-3,4-dihydro-2,7-naphthyridin-1(2H)-one;

(4R)-2-(5-aminopyridin-2-yl)-4-(3-chloro-2-fluorophenyl)-5-fluoro-6-({1-[(1S,2S)-2-fluorocyclopropane-1-carbonyl]azetidin-3-yl}amino)-4-methyl-3,4-dihydro-2,7-naphthyridin-1(2H)-one; or

(4R)-4-(3-chloro-2-fluorophenyl)-6-{[1-(2-cyclopropyl-2-hydroxypropanoyl)azetidin-3-yl]amino}-5-fluoro-2-(4-fluoro-1-methyl-1H-pyrazol-3-yl)-4-methyl-3,4-dihydro-2,7-naphthyridin-1(2H)-one;

or a pharmaceutically acceptable salt thereof.

10 . The compound of claim 1 , wherein the compound is

(4R)-4-(3-chloro-2-fluorophenyl)-5-fluoro-6-({1-[(1S,2S)-2-fluorocyclopropane-1-carbonyl]azetidin-3-yl}amino)-2-(4-fluoro-1-methyl-1H-pyrazol-3-yl)-4-methyl-3,4-dihydro-2,7-naphthyridin-1(2H)-one;

(4R)-4-(3-chloro-2-fluorophenyl)-5-fluoro-6-{[1-(2-hydroxy-2-methylpropanoyl)azetidin-3-yl]amino}-4-methyl-2-(1-methyl-1H-imidazol-4-yl)-3,4-dihydro-2,7-naphthyridin-1(2H)-one;

(4R)-2-(5-aminopyridin-2-yl)-4-(3-chloro-2-fluorophenyl)-5-fluoro-6-({1-[(1S,2S)-2-fluorocyclopropane-1-carbonyl]azetidin-3-yl}amino)-4-methyl-3,4-dihydro-2,7-naphthyridin-1(2H)-one;

or a pharmaceutically acceptable salt thereof.

11 . The compound of claim 1 , wherein Ar is (C 2 -C 9 )heteroaryl or phenyl; wherein Ar is optionally substituted with 1, 2, or 3 substituents selected from the group consisting of halogen, —N(R 10 )(R 11 ), —CH 2 —(NR 10 R 11 ), —(C 1 -C 6 )alkyl, —(C 1 -C 6 )hydroxyalkyl, —(C 1 -C 6 )haloalkyl, —(C 1 -C 6 )haloalkoxy, —OR 10 , —(C 3 -C 6 )cycloalkyl, and —(C 3 -C 6 )heterocycloalkyl.

12 . The compound of claim 1 , wherein at least one hydrogen is deuterium.

13 . The compound of claim 12 , wherein the compound has the formula 3D, 6D, 22D, or 23D:

or a pharmaceutically acceptable salt thereof;

wherein Y 1 , Y 2 , Y 3 , Y 4 , Y 5 , Y 6 , and Y 7 are each independently H or D; wherein when the compound is of the formula 3D, at least one of Y 1 , Y 2 , Y 3 , and Y 4 in formula 3D is D; when the compound is of the formula 6D, at least one of Y 1 , Y 2 , Y 3 , and Y 4 in formula 6D is D; when the compound is of the formula 22D, at least one of Y 1 , Y 2 , Y 3 , Y 4 , Y 5 , Y 6 , and Y 7 in formula 22D is D; and when the compound is of the formula 23D, at least one of Y 1 , Y 2 , Y 3 , and Y 4 in formula 23D is D.

14 . The compound of claim 12 , wherein the compound is of the formula 2D-I or 2D-II:

or a pharmaceutically acceptable salt thereof;

wherein Y 1 , Y 2 , Y 3 , Y 4 , Y 5 , Y 6 , Y 7 , Y 8 , Y 9 , and Y 10 are each independently H or D; wherein when the compound is of the formula 2D-I, at least one of Y 1 , Y 2 , Y 3 , Y 4 , Y 5 , Y 6 , Y 7 , Y 8 , Y 9 , and Y 10 in formula 2D-I is D; and when the compound is of the formula 2D-II, then at least one of Y 1 , Y 2 , Y 3 , or Y 4 in formula 2D-II is D.

15 . A compound, wherein the compound is (4R)-4-(3-chloro-2-fluorophenyl)-5-fluoro-6-({1-[(1S,2S)-2-fluorocyclopropane-1-carbonyl]azetidin-3-yl}amino)-2-(4-fluoro-1-methyl-1H-pyrazol-3-yl)-4-methyl-3,4-dihydro-2,7-naphthyridin-1 (2H)-one; or a pharmaceutically acceptable salt thereof.

16 . A compound, where in the compound is

or a pharmaceutically acceptable salt thereof.

17 . A compound, where in the compound is

18 . A crystal comprising a compound having the structure:

19 . The crystal of claim 18 , having a powder x-ray diffraction pattern comprising 2-theta values of (CuKα radiation, wavelength of 1.54056 Å) 9.8±0.2, 17±0.2, and 19.8±0.2; or 6.1±0.2, 7.2±0.2, 12.2±0.2, and 13.2±0.2.

20 . A pharmaceutical composition comprising:

the compound of claim 1 or a pharmaceutically acceptable salt of said compound; and

a pharmaceutically acceptable carrier, vehicle, or diluent.

21 . A pharmaceutical combination composition comprising:

a first compound, the first compound being the compound of claim 1 or a pharmaceutically acceptable salt of said compound;

a second compound, said second compound being an anti-heart failure treatment agent; wherein said anti-heart failure treatment agent is optionally an ACE inhibitor, an SGLT-2 inhibitor, an angiotensin receptor blocker, an angiotensin-receptor neprilysin inhibitor, a beta-adrenergic receptor blocker, a calcium channel blocker, or a vasodilator; and

a pharmaceutical carrier, vehicle, or diluent.

22 . A method of treating or reducing the risk of hospitalization for heart failure, cardiovascular death, congestive heart failure, heart failure with New York Heart Association Class I-IV symptoms, heart failure with reduced left ventricular function (HF-rEF), heart failure with preserved left ventricular function (HF-pEF), heart failure with midrange ejection fraction (HF-mrEF), heart failure in patients with Type II diabetes mellitus, coronary heart disease, unstable angina, peripheral vascular disease, renovascular disease, pulmonary hypertension, vasculitis, acute coronary syndromes and modification of cardiovascular risk comprising administering to a human in need of such treatment the compound of claim 1 or a pharmaceutically acceptable salt of said compound.

23 . The method of claim 22 , wherein heart failure or peripheral artery disease is treated.

Continuity (3)
Provisional Application 63520197 · Aug 17, 2023
Provisional Application 63379985 · Oct 18, 2022
Related Publication 20240182468A1 · Jun 6, 2024
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