# US 11,298,358 B2 · Combination therapy using ascochlorin derivative

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- Number: US 11,298,358 B2
- Document ID: US11298358B2
- Status: Granted
- Kind: B2
- Application number: 16/613,958
- Filed: 2018-05-18
- Published: 2021-11-11
- Granted: 2022-04-12
- Earliest claimed: 2017-05-18
- Assignees: Tatsuo Hoshino
- Applicants: Tatsuo Hoshino
- Inventors: Tatsuo Hoshino; Shinji Kagaya; Nobuo Shimma; Tsutomu Kawaguchi
- Web page: https://patentgrep.com/patent/US11298358B2

## CPC

- A61K 31/5375: 1,4-Oxazines, e.g. morpholine
- A61K 31/055: the aromatic ring being substituted by halogen
- A61K 31/122: having the oxygen directly attached to a ring, e.g. quinones, vitamin K1, anthralin
- A61K 31/15: Oximes (>C=N—O—); Hydrazines (>N—N<); Hydrazones (>N—N=) {; Imines (C—N=C)}
- A61K 31/215: of carboxylic acids
- A61K 31/337: having four-membered rings, e.g. taxol
- A61K 31/495: having six-membered rings with two {or more} nitrogen atoms as the only ring heteroatoms, e.g. piperazine {or tetrazines}(A61K31/48 takes precedence {; with three nitrogen atoms A61K31/53})
- A61K 39/3955: {against proteinaceous materials, e.g. enzymes, hormones, lymphokines}
- A61K 45/06: Mixtures of active ingredients without chemical characterisation, e.g. antiphlogistics and cardiaca
- A61P 35/00: Antineoplastic agents
- C07K 16/2818: {against CD28 or CD152}
- C07K 16/2827: {against B7 molecules, e.g. CD80, CD86}
- A61K 31/155: Amidines ([IMAGE cpc-sch-A61K-1029.gif]), e.g. guanidine (H2N—C(=NH)—NH2), isourea (N=C(OH)—NH2), isothiourea (—N=C(SH)—NH2)
- C07K 2317/76: Antagonist effect on antigen, e.g. neutralization or inhibition of binding
- A61K: PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES (devices or methods specially adapted for bringing pharmaceutical products into particular physical or administering forms A61J3/00; chemical aspects of, or use of materials for deodorisation of air, for disinfection or sterilisation, or for bandages, dressings, absorbent pads or surgical articles A61L; soap compositions C11D)
- A61P: SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- C07K: PEPTIDES (peptides in foodstuffs A23; obtaining protein compositions for foodstuffs, working-up proteins for foodstuffs A23J; preparations for medicinal purposes A61K; peptides containing beta-lactam rings C07D; cyclic dipeptides not having in their molecule any other peptide link than those which form their ring, e.g. piperazine-2,5-diones, C07D; ergot alkaloids of the cyclic peptide type C07D519/02; macromolecular compounds having statistically distributed amino acid units in their molecules, i.e. when the preparation does not provide for a specific; but for a random sequence of the amino acid units, homopolyamides and block copolyamides derived from amino acids C08G69/00; macromolecular products derived from proteins C08H1/00; preparation of glue or gelatine C09H; single cell proteins, enzymes C12N; genetic engineering processes for obtaining peptides C12N15/00; compositions for measuring or testing processes involving enzymes C12Q; investigation or analysis of biological material G01N33/00)

## Abstract

An object of the present invention is to provide a measure for treating or preventing a disease or condition that involves AMPK dysregulation, particularly a cancer. The present invention provides a combination therapy using a compound presented by formula (I), a pharmaceutically acceptable salt or a solvate thereof with an immune checkpoint inhibitor.

## Claims

### Claim 1

A method for treating or preventing a cancer, comprising administrating to a subject in need thereof a therapeutically effective amount of a compound represented by formula (I):
wherein
R1 is formyl, or —CH═N—O—Y, in which Y is a hydrogen atom or C1-6 alkyl;
R2 is C1-6 alkyl that may be substituted with 1 to 5 fluorine atoms;
R3 is a hydrogen atom or C1-6 alkyl;
R4 is hydroxy, C1-6 alkylamino, C3-7 cycloalkylamino, or 3- to 7-membered heterocycloalkylamino which contains —O—, —S—, —NR6—, —SO— or —SO2— as a ring atom, or
R3 and R4 together with the carbon atom to which they are attached form >C═N—O—Z;
Z is a hydrogen atom, C1-6 alkyl, —CO(CH2)n—R5 or —(CH2)n—R5;
n is an integer selected from 1 to 4;
R5 is —CO2R6, —CONH2, —CONR7R8, —OCONR7R8, —SO2NR7R8, —SO2R9, hydroxy, —NHSO2R9, or —NR7R8;
R6, R7 and R8 are each independently selected from a group consisting of a hydrogen atom, C1-6 alkyl, and C3-7 cycloalkyl; or R7 and R8 together with the nitrogen atom to which they are attached form a nitrogen-containing 3- to 7-membered heterocyclic ring which may further contain —O—, —S—, —NR6—, —SO— or —SO2— as a ring atom, in which the heterocyclic ring may be substituted with one or more substituents selected from hydroxy and C1-6 alkyl;
R9 is C1-6 alkyl, or C3-7 cycloalkyl;
a pharmaceutically acceptable salt or a solvate thereof,
in combination with administration of an immune checkpoint inhibitor.

### Claim 2 (depends on 1)

The method according to claim 1, wherein R4 is selected from the group consisting of hydroxy, methylamino, ethylamino, cyclopropylamino, and oxetan-3-ylamino.

### Claim 3 (depends on 1)

The method according to claim 1, wherein R3 and R4 together with the carbon atom to which they are attached form >C═N—O—Z in which Z is selected from the group consisting of a hydrogen atom, C1-6 alkyl, —CH2CO2R6, morpholinoethyl, piperazinylethyl, N-methyl-piperazinylethyl, and N,N-dimethylamino-ethyl.

### Claim 4 (depends on 2)

The method according to claim 2, wherein R1 is formyl.

### Claim 5 (depends on 2)

The method according to claim 2, wherein R1 is —CH═N—OH.

### Claim 6 (depends on 2)

The method according to claim 2, wherein R1 is —CH═N—OMe.

### Claim 7 (depends on 1)

The method according to claim 1, wherein the compound represented by formula (I) is selected from the group consisting of
3-chloro-6-hydroxy-5-((2E,4E)-5-((1R,2R,6R)-3-hydroxy-1,2,3,6-tetramethylcyclohexyl)-3-methylpenta-2,4-dien-1-yl)-4-methoxy-2-methylbenzaldehyde,
3-chloro-6-hydroxy-5-((2E,4E)-5-((1R,2R,6R,E)-3-(hydroxyimino)-1,2,6-trimethylcyclohexyl)-3-methylpenta-2,4-dien-1-yl)-4-methoxy-2-methylbenzaldehyde,
(E)-3-chloro-6-hydroxy-5-((2E,4E)-5-((1R,2R,6R,E)-3-(hydroxyimino)-1,2,6-trimethylcyclohexyl)-3-methylpenta-2,4-dien-1-yl)-4-methoxy-2-methylbenzaldehyde oxime,
3-chloro-4-(fluoromethoxy)-6-hydroxy-5-((2E,4E)-5-((1R,2R,6R,E)-3-(hydroxyimino)-1,2,6-trimethylcyclohexyl)-3-methylpenta-2,4-dien-1-yl)-2-methylbenzaldehyde oxime,
3-chloro-4-(fluoromethoxy)-6-hydroxy-5-((2E,4E)-5-((1R,2R,6R,E)-3-(hydroxyimino)-1,2,6-trimethylcyclohexyl)-3-methylpenta-2,4-dien-1-yl)-2-methylbenzaldehyde,
[(1E,2R,3R,4R)-3-[(1E,3E)-5-(3-chloro-5-formyl-6-hydroxy-2-methoxy-4-methylphenyl)-3-methylpenta-1,3-dien-1-yl]-2,3,4-trimethylcyclohexylidene]amino 2-(dimethylamino)acetate,
(E)-3-chloro-6-hydroxy-5-((2E,4E)-5-((1R,2R,3S,6R)-3-hydroxy-1,2,3,6-tetramethylcyclohexyl)-3-methylpenta-2,4-dien-1-yl)-4-methoxy-2-methylbenzaldehyde oxime,
(E)-3-chloro-6-hydroxy-4-methoxy-5-((2E,4E)-5-((1R,2R,6R,E)-3-(methoxyimino)-1,2,6-trimethylcyclohexyl)-3-methylpenta-2,4-dien-1-yl)-2-methylbenzaldehyde O-methyl oxime,
(E)-3-chloro-4-(fluoromethoxy)-6-hydroxy-5-((2E,4E)-5-((1R,2R,6R,E)-3-(methoxyimino)-1,2,6-trimethylcyclohexyl)-3-methylpenta-2,4-dien-1-yl)-2-methylbenzaldehyde O-methyl oxime,
(E)-3-chloro-6-hydroxy-5-((2E,4E)-5-((1R,2R,6R,E)-3-(hydroxyimino)-1,2,6-trimethylcyclohexyl)-3-methylpenta-2,4-dien-1-yl)-4-methoxy-2-methylbenzaldehyde O-methyl oxime,
(E)-3-chloro-4-(fluoromethoxy)-6-hydroxy-5-((2E,4E)-5-((1R,2R,6R,E)-3-(hydroxyimino)-1,2,6-trimethylcyclohexyl)-3-methylpenta-2,4-dien-1-yl)-2-methylbenzaldehyde O-methyl oxime,
3-chloro-4-(fluoromethoxy)-6-hydroxy-2-methyl-5-((2E,4E)-3-methyl-5-((1R,2R,6R,E)-1,2,6-trimethyl-3-(2-morpholinoethoxyimino)cyclohexyl)penta-2,4-dien-1-yl)benzaldehyde,
3-chloro-5-((2E,4E)-5-((1R,2R,6R)-3-(cyclopropylamino)-1,2,6-trimethylcyclohexyl)-3-methylpenta-2,4-dien-1-yl)-4-(fluoromethoxy)-6-hydroxy-2-methylbenzaldehyde,
(E)-3-chloro-6-hydroxy-5-((2E,4E)-5-((1R,2R,3S,6R)-3-hydroxy-1,2,3,6-tetramethylcyclohexyl)-3-methylpenta-2,4-dien-1-yl)-4-methoxy-2-methylbenzaldehyde O-methyl oxime,
(E)-3-chloro-5-((2E,4E)-5-((1R,2R,6R,E)-3-(2-(dimethylamino)ethoxyimino)-1,2,6-trimethylcyclohexyl)-3-methylpenta-2,4-dien-1-yl)-6-hydroxy-4-methoxy-2-methylbenzaldehyde O-methyl oxime,
(E)-3-chloro-6-hydroxy-4-methoxy-2-methyl-5-((2E,4E)-3-methyl-5-((1R,2R,6R,E)-1,2,6-trimethyl-3-(2-morpholinoethoxyimino)cyclohexyl)penta-2,4-dien-1-yl)benzaldehyde O-methyl oxime,
(E)-3-chloro-6-hydroxy-4-methoxy-2-methyl-5-((2E,4E)-3-methyl-5-((1R,2R,6R,E)-1,2,6-trimethyl-3-(2-(4-methylpiperazin-1-yl)ethoxyimino)-cyclohexyl)penta-2,4-dien-1-yl)benzaldehyde O-methyl oxime,
ethyl 2-([[(1E,2R,3R,4R)-3-[(1E,3E)-5-[3-chloro-6-hydroxy-2-methoxy-5-[(1E)-(methoxyimino)methyl]-4-methylphenyl]-3-methylpenta-1,3-dien-1-yl]-2,3,4-trimethylcyclohexylidene]amino]oxy)acetate,
2-([[(1E,2R,3R,4R)-3-[(1E,3E)-5-[3-chloro-6-hydroxy-2-methoxy-5-[(1E)-(methoxyimino)methyl]-4-methylphenyl]-3-methylpenta-1,3-dien-1-yl]-2,3,4-trimethylcyclohexylidene]amino]oxy)acetic acid,
3-chloro-5-((2E,4E)-5-((1R,2R,6R)-3-(ethylamino)-1,2,6-trimethylcyclohexyl)-3-methylpenta-2,4-dien-1-yl)-6-hydroxy-4-methoxy-2-methylbenzaldehyde,
(E)-3-chloro-5-((2E,4E)-5-((1R,2R,6R)-3-(ethylamino)-1,2,6-trimethylcyclohexyl)-3-methylpenta-2,4-dien-1-yl)-6-hydroxy-4-methoxy-2-methylbenzaldehyde O-methyl oxime,
3-chloro-5-((2E,4E)-5-((1R,2R,6R)-3-(cyclopropylamino)-1,2,6-trimethylcyclohexyl)-3-methylpenta-2,4-dien-1-yl)-6-hydroxy-4-methoxy-2-methylbenzaldehyde,
(E)-3-chloro-5-((2E,4E)-5-((1R,2R,6R)-3-(cyclopropylamino)-1,2,6-trimethylcyclohexyl)-3-methylpenta-2,4-dien-1-yl)-6-hydroxy-4-methoxy-2-methylbenzaldehyde O-methyl oxime,
2-[(2E,4E)-5-[(1R,2R,6R)-3-amino-1,2,6-trimethylcyclohexyl]-3-methylpenta-2,4-dien-1-yl]-4-chloro-3-methoxy-6-[(1E)-(methoxyimino)methyl]-5-methylphenol,
(E)-3-chloro-6-hydroxy-4-methoxy-2-methyl-5-((2E,4E)-3-methyl-5-((1R,2R,6R)-1,2,6-trimethyl-3-(oxetan-3-ylamino)cyclohexyl)penta-2,4-dien-1-yl)benzaldehyde O-methyl oxime,
2-([[(1E,2R,3R,4R)-3-[(1E,3E)-5-[3-chloro-6-hydroxy-2-fluoromethoxy-5-formyl-4-methylphenyl]-3-methylpenta-1,3-dien-1-yl]-2,3,4-trimethylcyclohexylidene]-amino]oxy)acetic acid,
2-([[(1E,2R,3R,4R)-3-[(1E,3E)-5-[3-chloro-6-hydroxy-2-methoxy-5-[(1E)-(hydroxyimino)methyl]-4-methylphenyl]-3-methylpenta-1,3-dien-1-yl]-2,3,4-trimethylcyclohexylidene]amino]oxy)acetic acid,
2-([[(1E,2R,3R,4R)-3-[(1E,3E)-5-[3-chloro-2-methoxy-6-hydroxy-5-[(1E)-(hydroxyimino)methyl]-4-methylphenyl]-3-methylpenta-1,3-dien-1-yl]-2,3,4-trimethylcyclohexylidene]amino]oxy)acetic acid,
and pharmaceutically acceptable salts thereof.

### Claim 8 (depends on 1)

The method according to claim 1, wherein the immune checkpoint inhibitor is selected from anti-CTLA4 antibodies, anti-PD-1 antibodies and anti-PD-L1 antibodies.

### Claim 9 (depends on 1)

The method according to claim 1, wherein the immune checkpoint inhibitor is an anti-PD-1 antibody.

### Claim 10 (depends on 1)

The method according to claim 1, wherein the immune checkpoint inhibitor is an anti-PD-L1 antibody.

### Claim 11 (depends on 3)

The method according to claim 3, wherein R1 is formyl.

### Claim 12 (depends on 3)

The method according to claim 3, wherein R1 is —CH═N—OH.

### Claim 13 (depends on 3)

The method according to claim 3, wherein R1 is —CH═N—OMe.