Heterocycle-substituted tetracyclic compounds and methods of use thereof for the treatment of viral diseases

Patent metadata

Field	Value
Publication number	US-10646494-B2
Application number	US-201716326039-A
Country	US
Kind code	B2
Filing date	Aug 14, 2017
Priority date	Aug 18, 2016
Publication date	May 12, 2020
Grant date	May 12, 2020

Abstract

The present invention relates to novel Heterocycle-Substituted Tetracyclic Compounds of Formula (I): (I) and pharmaceutically acceptable salts thereof, wherein A, A′, R 2 R 3 and R 5 are as defined herein. The present invention also relates to compositions comprising at least one Heterocycle-Substituted Tetracyclic Compound, and methods of using the Heterocycle-Substituted Tetracyclic Compounds for treating or preventing HCV infection in a patient.

First claim

What is claimed is:

1. A compound having the formula (I):

or a pharmaceutically acceptable salt thereof, wherein:
A is:

A′ is:

each occurrence of R 1 is independently selected from H, C 1 -C 6 alkyl, C 3 -C 7 cycloalkyl, C 1 -C 6 haloalkyl, —O—C 1 -C 6 alkyl, —N(R 9 ) 2 , —O—(C 1 -C 6 haloalkyl), and halo;
each occurrence of R 1A is independently selected from H, C 1 -C 6 alkyl, C 3 -C 7 cycloalkyl, C 1 -C 6 haloalkyl, —O—C 1 -C 6 alkyl, —N(R 9 ) 2 , —O—(C 1 -C 6 haloalkyl), and halo, or one R 1A group and an R 1 group that are attached to same ring, together with the ring carbon atoms to which they are attached, can combine to form a fused C 3 -C 7 cycloalkyl group, or two R 1A groups that are attached to the same carbon atom, and the common carbon atom to which they are attached, can combine to form a spirocyclic C 3 -C 7 cycloalkyl group;
each occurrence of R 1B is independently H, C 1 -C 6 alkyl, C 3 -C 7 cycloalkyl, C 1 -C 6 haloalkyl, —O—C 1 -C 6 alkyl, —N(R 9 ) 2 , —O—(C 1 -C 6 haloalkyl), or halo, or an R 1B group and an R 1A group that are attached to the same ring, together with the carbon atoms to which they are attached, can combine to form a fused C 3 -C 7 cycloalkyl group, or an R 1B group and an R 1 group that are attached to the same ring, can combine to form a bridging group having the formula —CH 2 — or —CH 2 CH 2 —;
R 2 is H, C 1 -C 6 alkyl, C 3 -C 7 cycloalkyl, phenyl or halo, wherein said phenyl group and said C 3 -C 7 cycloalkyl can be optionally substituted with up to 4 groups, which can be the same or different and are selected from C 1 -C 6 alkyl, halo, —O—C 1 -C 6 alkyl and —N(R 9 ) 2 ;
R 3 is selected from furanyl, oxazolyl, oxadiazolyl, isoxazolyl, imidazolyl, benzoxazolyl, benzisoxazolyl, benzimidazolyl, pyrazolo[1,5-a]pyridinyl, imidazo[1,2-a]pyridinyl, and 6,7-dihydro-5H-pyrrolo[1,2-a]imidazolyl, wherein said furanyl, oxazolyl, oxadiazolyl, isoxazolyl, imidazolyl, benzoxazolyl, benzisoxazolyl, benzimidazolyl, pyrazolo[1,5-a]pyridinyl, imidazo[1,2-a]pyridinyl, and 6,7-dihydro-5H-pyrrolo[1,2-a]imidazolyl, groups can be optionally substituted on one or more ring carbon atoms with R 6 , and optionally substituted on a ring nitrogen atom with C 1 -C 6 alkyl;
each occurrence of R 4 is independently selected from —C(O)—C(R 7 ) 2 NHC(O)O—R 8 ;
R 5 represents up to 3 substituents, each independently selected from halo, —CN, C 1 -C 6 alkyl, C 1 -C 6 haloalkyl, C 3 -C 7 cycloalkyl, 4 to 6-membered monocyclic heterocycloalkyl, 5 or 6-membered monocyclic heteroaryl, C 6 -C 10 aryl, benzyl and —O—(C 1 -C 6 alkyl), wherein said C 3 -C 7 cycloalkyl group, said 4 to 6-membered monocyclic heterocycloalkyl group, said 5 or 6-membered monocyclic heteroaryl group, said C 6 -C 10 aryl group, or the phenyl moiety of said benzyl group can be optionally substituted with up to 3 groups, which can be the same or different, and are selected from halo, —CN, C 1 -C 6 alkyl, C 1 -C 6 haloalkyl, —O—C 1 -C 6 alkyl, —(C 1 -C 6 alkylene)-O—C 1 -C 6 alkyl and —O—(C 1 -C 6 haloalkyl);
R 6 represents up to 3 optional substituents, each independently selected from halo, —CN, C 1 -C 6 alkyl, C 1 -C 6 haloalkyl, C 3 -C 7 cycloalkyl, C 6 -C 10 aryl, benzyl, —O—(C 1 -C 6 alkyl), C 2 -C 6 alkenyl, C 1 -C 6 hydroxyalkyl, —N(R 9 ) 2 , —(C 1 -C 6 alkylene) m -(C 6 -C 10 aryl), —(C 1 -C 6 alkylene) m -(C 3 -C 7 cycloalkyl), 5 or 6-membered monocyclic heteroaryl, and 9 or 10-membered bicyclic heteroaryl, wherein said 5 or 6-membered monocyclic heteroaryl group can be optionally substituted on a ring carbon atom with C 1 -C 6 alkyl, C 3 -C 7 cycloalkyl or phenyl, and optionally substituted on a ring nitrogen atom with C 1 -C 6 alkyl; said C 1 -C 6 alkyl, C 3 -C 7 cycloalkyl or phenyl can be optionally substituted a ring carbon atom with halo, C 1 -C 6 alkyl or C 3 -C 7 cycloalkyl;
each occurrence of R 7 is independently selected from H, C 1 -C 6 alkyl, C 1 -C 6 haloalkyl, phenyl, 4 to 8-membered monocyclic heterocycloalkyl, 6 to 10-membered bicyclic heterocycloalkyl and C 3 -C 7 cycloalkyl, wherein said 4 to 8-membered monocyclic heterocycloalkyl group, said 6 to 10-membered bicyclic heterocycloalkyl group and said C 3 -C 7 cycloalkyl group can be optionally substituted with up to 5 groups, each independently selected from halo, —CN, C 1 -C 6 alkyl, C 1 -C 6 haloalkyl, C 3 -C 7 cycloalkyl, —O—C 1 -C 6 alkyl, —N(R 9 ) 2 and —O—(C 1 -C 6 haloalkyl), and wherein said C 3 -C 7 cycloalkyl group can be optionally fused to a 4 to 6-membered monocyclic heterocycloalkyl group, and wherein said 4 to 8-membered monocyclic heterocycloalkyl group and said C 3 -C 7 cycloalkyl group can be substituted on a ring carbon atom with a spirocyclic C 3 -C 6 cycloalkyl group; and wherein said C 3 -C 7 cycloalkyl group can be substituted on a ring carbon atom with a spirocyclic 3 to 6-membered monocyclic heterocycloalkyl group, and wherein two R 7 groups, that are attached to a common carbon atom, together with the common carbon atom to which they are attached, join to form a C 3 -C 7 cycloalkyl group;
each occurrence of R 8 is independently C 1 -C 6 alkyl, C 3 -C 7 cycloalkyl and C 6 -C 10 aryl;
each occurrence of R 9 is independently selected from H, C 1 -C 6 alkyl, C 3 -C 7 cycloalkyl and C 6 -C 10 aryl; and
each occurrence of m is independently 0 or 1.

2. The compound of claim 1 , wherein each occurrence of R 4 is independently —C(O)CH(R 7 )NHC(O)OCH 3 , or a pharmaceutically acceptable salt thereof.

3. The compound of claim 1 , wherein each occurrence of R 4 is independently —C(O)CH(R 7 )—NHC(O)OCH 3 and R 7 is C 1 -C 6 alkyl, C 1 -C 6 haloalkyl or 4 to 6-membered monocyclic heterocycloalkyl, wherein said 4 to 6-membered monocyclic heterocycloalkyl group can be optionally substituted with up to five C 1 -C 6 alkyl groups or said 4 to 6-membered monocyclic heterocycloalkyl group can be optionally substituted on a ring carbon atom with a spirocyclic C 3 -C 6 cycloalkyl group, or a pharmaceutically acceptable salt thereof.

4. The compound of claim 1 having the formula:

or a pharmaceutically acceptable salt thereof,
wherein:
each R 1 is H;
each R 1A is independently H or F, or an R 1A group and an R 1 group that are attached to same ring, together with the ring carbon atoms to which they are attached, can combine to form a fused cyclopropyl group;
R 3 is selected from furanyl, oxazolyl, oxadiazolyl, isoxazolyl, imidazolyl, benzoxazolyl, benzisoxazolyl, benzimidazolyl, pyrazolo[1,5-a]pyridinyl, imidazo[1,2-a]pyridinyl, and 6,7-dihydro-5H-pyrrolo[1,2-a]imidazolyl, wherein said furanyl, oxazolyl, oxadiazolyl, isoxazolyl, imidazolyl, benzoxazolyl, benzisoxazolyl, benzimidazolyl, pyrazolo[1,5-a]pyridinyl, imidazo[1,2-a]pyridinyl, and 6,7-dihydro-5H-pyrrolo[1,2-a]imidazolyl, groups can be optionally substituted on a ring carbon atom with C 1 -C 6 alkyl, C 3 -C 7 cycloalkyl or phenyl, and optionally substituted on a ring nitrogen atom with C 1 -C 6 alkyl; said C 1 -C 6 alkyl, C 3 -C 7 cycloalkyl or phenyl can be optionally substituted a ring carbon atom with halo, C 1 -C 6 alkyl or C 3 -C 7 cycloalkyl;
R 5 is H or F; and
each occurrence of R 7 is independently selected from C 1 -C 6 alkyl, C 1 -C 6 haloalkyl, and 4 to 6-membered mon

Assignees

• Merck Sharp & Dohme

Inventors

• Yu Wensheng
• Tong Ling
• Kozlowski Joseph A
• Coburn Craig A
• Yang De-Yi
• Sha Deyou
• Kim Jae-Hun
• Dwyer Michael
• Keertikar Kartik M
• Hu Bin
• Zhong Bin
• Hao Jinglai
• Wang Dahai

Classifications

• A61P31/14

  for RNA viruses · CPC title

• A61K31/5365 Primary

  ortho- or peri-condensed with heterocyclic ring systems · CPC title

• C07D498/04

  Ortho-condensed systems · CPC title

• A61K45/06

  Mixtures of active ingredients without chemical characterisation, e.g. antiphlogistics and cardiaca · CPC title

• C07D519/00

  Heterocyclic compounds containing more than one system of two or more relevant hetero rings condensed among themselves or condensed with a common carbocyclic ring system not provided for in groups C07D453/00 or C07D455/00 · CPC title