Quinazoline derivatives as antitumor agents

Abstract

The present application relates to novel quinazoline compounds as inhibitors of type I receptor tyrosine kinases, the pharmaceutical compositions comprising one or more of the compounds and salts thereof as an active ingredient, and the use of the compounds and salts thereof in the treatment of hyperproliferative diseases, such as cancer and inflammation, in mammals and especially in humans.

What is claimed is: 
     
         1 . A compound of Formula (I): 
       
         
           
           
               
               
           
         
         or a pharmaceutically acceptable salt thereof, wherein:
 G is C(R 5 ) or N; 
 A is CH or N; 
 B is CH or N; 
 X 1 , X 2 , X 3 , X 4 , X 5 , X 6 , and X 7  are each independently CH or N, with the provision that X 6  and X 7  are not each CH or N, 
 E is O, NH, or S; 
 L is selected from the group consisting of O, S and N(R 6 ); 
 R 1  is each independently selected from the group consisting of hydrogen, halogen, cyano, nitro, hydroxyl, alkyl, alkenyl, alkynyl, heteroalkyl, heteroalkenyl, heteroalkynyl, saturated or partially unsaturated cycloalkyl, saturated or partially unsaturated heterocyclyl, aryl, N(R 7 )(R 8 ), and O(R 9 ), wherein said cycloalkyl and heterocyclyl are optionally substituted with one or more groups independently selected from the group consisting of halogen, cyano, nitro, hydroxyl, carboxy, carbamoyl, acyl, alkyl, alkenyl, alkynyl, and haloalkyl; 
 R 2  is selected from the group consisting of alkyl, saturated or partially unsaturated cycloalkyl, saturated or partially unsaturated heterocyclyl, wherein said alkyl, cycloalkyl, and heterocyclyl are optionally substituted with one or more groups independently selected from the group consisting of halogen, cyano, nitro, hydroxyl, carboxy, carbamoyl, alkyl, alkenyl, alkynyl, haloalkyl, saturated or partially unsaturated cycloalkyl, and N(R 10 )(R 11 ); 
 R 6  is hydrogen or alkyl; or 
 when L is N(R 6 ), R 2  and R 6  together with the nitrogen atom to which they are attached form a 3 to 10 membered saturated or partially unsaturated heterocyclyl ring optionally containing one or more additional heteroatoms selected from N, O and S, wherein said 3 to 10 membered heterocyclyl ring is optionally substituted with one or more groups independently selected from the group consisting of halogen, cyano, nitro, carboxy, carbamoyl, alkyl, alkenyl, alkynyl, haloalkyl, saturated and partially unsaturated cycloalkyl, and N(R 10 )(R 11 ); 
 R 3  and R 4  are each independently selected from the group consisting of hydrogen, halogen, cyano, nitro, alkyl, alkenyl, alkynyl and alkoxyl; 
 R 5  is selected from the group consisting of hydrogen, halogen and cyano; 
 R 7  and R 8  are each independently selected from the group consisting of hydrogen, alkyl, alkenyl, alkynyl, heteroalkyl, heteroalkenyl, heteroalkynyl, acyl, saturated or partially unsaturated cycloalkyl, saturated or partially unsaturated heterocyclyl, cycloalkylalkyl, aryl, arylalkyl, heteroaryl, heteroarylalkyl, or heterocyclylalkyl, wherein said alkyl, alkenyl, alkynyl, acyl, cycloalkyl, heterocyclyl, cycloalkylalkyl, aryl, arylalkyl, heteroaryl, heteroarylalkyl, and heterocyclylalkyl are optionally substituted with one or more groups independently selected from the group consisting of alkyl, alkenyl, alkynyl, heteroalkyl, heteroalkenyl, heteroalkynyl, alkylamino, saturated and partially unsaturated cycloalkyl, saturated and partially unsaturated heterocyclyl optionally substituted by alkyl, aryl, and heteroaryl; or 
 R 7  and R 8  together with the atom to which they are attached form a 3 to 10 membered saturated or partially unsaturated heterocyclyl ring optionally containing one or more additional heteroatoms selected from N, O, S, SO, SO 2  and NR 12 , wherein said heterocyclyl ring is optionally substituted with one or more groups independently selected from the group consisting of oxo, halogen, alkyl, alkenyl, alkynyl, saturated and partially unsaturated cycloalkyl, saturated and partially unsaturated heterocyclyl, cycloalkylalkyl, cyano, nitro, haloalkyl, haloalkoxy, azido, aryl, heteroaryl, arylalkyl, heteroarylalkyl, and heterocyclylalkyl; 
 R 9  is selected from the group consisting of alkyl, alkenyl, alkynyl, acyl, saturated or partially unsaturated cycloalkyl, saturated or partially unsaturated heterocyclyl, wherein said alkyl, alkenyl, alkynyl, acyl, cycloalkyl, heterocyclyl are optionally substituted by one or more groups independently selected from the group consisting of halogen, alkyl, alkenyl, alkynyl, alkoxyl, acyl, saturated and partially unsaturated cycloalkyl, saturated and partially unsaturated heterocyclyl, cycloalkylalkyl, cyano, nitro, haloalkyl, haloalkoxy, azido, aryl, heteroaryl, arylalkyl, heteroarylalkyl, and heterocyclylalkyl; 
 R 10  and R 11  are each independently selected from the group consisting of hydrogen, alkyl, alkenyl, alkynyl, heteroalkyl, heteroalkenyl, heteroalkynyl, saturated or partially unsaturated cycloalkyl, saturated or partially unsaturated heterocyclyl, cycloalkylalkyl, aryl, arylalkyl, heteroaryl, heteroarylalkyl, or heterocyclylalkyl, wherein said alkyl, alkenyl, alkynyl, cycloalkyl, heterocyclyl, cycloalkylalkyl, aryl, arylalkyl, heteroaryl, heteroarylalkyl, and heterocyclylalkyl are optionally substituted with one or more groups independently selected from alkyl, alkenyl, alkynyl, heteroalkyl, heteroalkenyl, heteroalkynyl, saturated and partially unsaturated cycloalkyl, saturated and partially unsaturated heterocyclyl, aryl, and heteroaryl; or 
 R 10  and R 11  together with the atom to which they are attached form a 3 to 10 membered saturated or partially unsaturated heterocyclyl ring optionally containing one or more additional heteroatoms selected from N, O, S, SO, SO 2  and NR 12 , wherein said heterocyclyl ring is optionally substituted with one or more groups independently selected from the group consisting of oxo, halogen, alkyl, alkenyl, alkynyl, saturated and partially unsaturated cycloalkyl, saturated and partially unsaturated heterocyclyl, cycloalkylalkyl, cyano, nitro, haloalkyl, haloalkoxy, azido, aryl, heteroaryl, arylalkyl, heteroarylalkyl, and heterocyclylalkyl; 
 R 12  is selected from the group consisting of hydrogen, alkyl, saturated or partially unsaturated cycloalkyl, saturated or partially unsaturated heterocyclyl, aryl, arylalkyl, heteroaryl, heteroarylalkyl, or heterocyclylalkyl, wherein said alkyl, cycloalkyl, heterocyclyl, aryl, arylalkyl, heteroaryl, heteroarylalkyl, and heterocyclylalkyl are optionally substituted with one or more groups independently selected from halogen, alkyl, alkenyl, alkynyl, saturated and partially unsaturated cycloalkyl, saturated and partially unsaturated heterocyclyl, cycloalkylalkyl, cyano, nitro, aryl, heteroaryl, arylalkyl, heteroarylalkyl, and heterocyclylalkyl; 
 n is 0, 1 or 2. 
 
       
     
     
         2 . The compound or a pharmaceutically acceptable salt thereof, as claimed in  claim 1 , wherein the compound has a formula of: 
       
         
           
           
               
               
           
         
       
     
     
         3 . The compound or a pharmaceutically acceptable salt thereof, as claimed in  claim 1  or  2 , wherein X 1  is CH. 
     
     
         4 . The compound or a pharmaceutically acceptable salt thereof, as claimed in  claim 1 , wherein one of X 2 , X 3 , X 4 , and X 5  is N. 
     
     
         5 . The compound or a pharmaceutically acceptable salt thereof, as claimed in  claim 1 , wherein two of X 2 , X 3 , X 4 , and X 5  are N. 
     
     
         6 . The compound or a pharmaceutically acceptable salt thereof, as claimed in  claim 1 , wherein X 6  is N and X 7  is CH. 
     
     
         7 . The compound or a pharmaceutically acceptable salt thereof, as claimed in  claim 1 , wherein X 6  is CH and X 7  is N. 
     
     
         8 . The compound or a pharmaceutically acceptable salt thereof, as claimed in any one of preceding claims, wherein G is N. 
     
     
         9 . The compound or a pharmaceutically acceptable salt thereof, as claimed in any one of preceding claims, wherein A is CH and B is N. 
     
     
         10 . The compound or a pharmaceutically acceptable salt thereof, as claimed in any one of preceding claims, wherein E is O. 
     
     
         11 . The compound or a pharmaceutically acceptable salt thereof, as claimed in any one of preceding claims, wherein R 1  is selected from hydrogen, N(R 7 )(R 8 ), O(R 9 ), or saturated or partially unsaturated heterocyclyl optionally substituted by acyl. 
     
     
         12 . The compound or a pharmaceutically acceptable salt thereof, as claimed in any one of preceding claims, wherein L is N(R 6 ), and R 2  and R 6  together with the nitrogen atom to which they are attached form a 3 to 10 membered saturated or partially unsaturated heterocyclyl ring optionally containing one or more additional heteroatoms selected from N, O and S, wherein said 3 to 10 membered heterocyclyl ring is optionally substituted with one or more groups independently selected from the group consisting of halogen, alkyl, haloalkyl, saturated and partially unsaturated cycloalkyl, and N(R 10 )(R 11 ). 
     
     
         13 . The compound or a pharmaceutically acceptable salt thereof, as claimed in  claim 12 , wherein R 2  and R 6  together with the nitrogen atom to which they are attached form a 4 to 9 membered saturated heterocyclyl ring optionally containing one or more additional heteroatoms selected from N, O and S, wherein said 4 to 9 membered saturated heterocyclyl ring is optionally substituted with one or more groups independently selected from the group consisting of halogen, alkyl, haloalkyl, saturated and partially unsaturated cycloalkyl, and N(R 10 )(R 11 ). 
     
     
         14 . The compound or a pharmaceutically acceptable salt thereof, as claimed in  claim 12  or  13 , wherein R 2  and R 6  together with the nitrogen atom to which they are attached form: 
       
         
           
           
               
               
           
         
       
       each of which is optionally substituted with one or more groups independently selected from the group consisting of halogen, alkyl, haloalkyl, saturated and partially unsaturated cycloalkyl, N(R 10 )(R 11 ), wherein p is 1, 2 or 3, and q is 1, 2 or 3. 
     
     
         15 . The compound or a pharmaceutically acceptable salt thereof, as claimed in any one of  claims 1  to  11 , wherein L is O, and R 2  is selected from saturated or partially unsaturated cycloalkyl and saturated or partially unsaturated heterocyclyl, wherein said cycloalkyl and heterocyclyl are optionally substituted with one or more groups independently selected from the group consisting of halogen, alkyl, and N(R 10 )(R 11 ). 
     
     
         16 . The compound or a pharmaceutically acceptable salt thereof, as claimed in  claim 15 , wherein R 2  is selected from C 4-6  saturated cycloalkyl or 5 to 6 membered saturated heterocyclyl, wherein said C 4-6  saturated cycloalkyl and 5 to 6 membered saturated heterocyclyl are optionally substituted with one or more groups independently selected from the group consisting of halogen, alkyl, and N(R 10 )(R 11 ). 
     
     
         17 . The compound or a pharmaceutically acceptable salt thereof, as claimed in any one of preceding claims, wherein R 3  is selected from halogen or alkyl. 
     
     
         18 . The compound or a pharmaceutically acceptable salt thereof, as claimed in any one of preceding claims, wherein R 4  is hydrogen. 
     
     
         19 . The compound or a pharmaceutically acceptable salt thereof, as claimed in  claim 1  or  2 , wherein:
 G is N; 
 A is CH; 
 B is N; 
 X 1  is CH; 
 X 6  is N; 
 X 7  is CH; 
 E is O; 
 L is selected from O or N(R 6 ); 
 R 1  is O(R 9 ), N(R 7 )(R 8 ), or partially unsaturated heterocyclyl optionally substituted by acyl; 
 R 2  is selected from C 4-6  saturated cycloalkyl or 5 to 6 membered saturated heterocyclyl, wherein said C 4-6  saturated cycloalkyl and 5 to 6 membered saturated heterocyclyl are optionally substituted with one or more groups independently selected from the group consisting of halogen, alkyl, and N(R 10 )(R 11 ), or; 
 R 2  and R 6  together with the nitrogen atom to which they are attached form a 4 to 9 membered saturated heterocyclyl ring optionally containing one or more additional heteroatoms selected from N, O and S, wherein said 4 to 9 membered saturated heterocyclyl ring is optionally substituted with one or more groups independently selected from the group consisting of halogen, alkyl, haloalkyl, saturated and partially unsaturated cycloalkyl, and N(R 10 )(R 11 ); 
 R 3  is selected from halogen or alkyl; 
 R 4  and R 5  are hydrogen; 
 R 7  and R 8  are each independently selected from hydrogen, acyl, or saturated or partially unsaturated heterocyclyl, wherein said acyl and heterocyclyl are optionally substituted with one or more groups selected from alkyl, alkylamino, saturated and partially unsaturated heterocyclyl; 
 R 9  is selected from the group consisting of alkyl, acyl, C 3-7  saturated or partially unsaturated cycloalkyl, and 4 to 6 membered saturated or partially unsaturated heterocyclyl, wherein said alkyl, acyl, cycloalkyl, and heterocyclyl are optionally substituted by one or more groups independently selected from halogen, alkyl, acyl, and alkoxyl; 
 R 10  and R 11  are alkyl; and 
 n is 1. 
 
     
     
         20 . The compound or a pharmaceutically acceptable salt thereof, as claimed in  claim 1  or  2 , wherein the compound has a formula selected from the group consisting of: 
       
         
           
           
               
               
           
         
         
           
           
               
               
           
         
       
     
     
         21 . The compound or a pharmaceutically acceptable salt thereof, as claimed in  claim 20 , wherein
 L is N(R 6 );   R 1  is selected from the group consisting of halogen, cyano, nitro, hydroxyl, alkyl, alkenyl, alkynyl, heteroalkyl, heteroalkenyl, heteroalkynyl, saturated or partially unsaturated cycloalkyl, saturated or partially unsaturated heterocyclyl, aryl, N(R 7 )(R 8 ), and O(R 9 ); and   R 2  and R 6  together with the nitrogen atom to which they are attached form a 4 to 9 membered saturated heterocyclyl ring optionally containing one or more additional heteroatoms selected from N, O and S, wherein said 4 to 9 membered saturated heterocyclyl ring is optionally substituted with one or more groups independently selected from the group consisting of halogen, alkyl, haloalkyl, saturated and partially unsaturated cycloalkyl, and N(R 10 )(R 11 ).   
     
     
         22 . The compound or a pharmaceutically acceptable salt thereof, as claimed in  claim 1  or  2 , wherein the compound has a formula selected from the group consisting of: 
       
         
           
           
               
               
           
         
       
     
     
         23 . The compound or a pharmaceutically acceptable salt thereof, as claimed in any one of preceding claims, wherein the compound is selected from the group consisting of:
 N-(4-([1,2,4]triazolo[1,5-c]pyrimidin-7-yloxy)-3-methylphenyl)-5-(3-(dimethylamino)azetidin-1-yl)-6-methoxyquinazolin-4-amine;   (R)—N-(4-([1,2,4]triazolo[1,5-c]pyrimidin-7-yloxy)-3-methylphenyl)-5-(3-(dimethylamino)pyrrolidin-1-yl)-6-methoxyquinazolin-4-amine;   (S)—N-(4-([1,2,4]triazolo[1,5-c]pyrimidin-7-yloxy)-3-methylphenyl)-5-(3-(dimethylamino)pyrrolidin-1-yl)-6-methoxyquinazolin-4-amine;   N-(4-([1,2,4]triazolo[1,5-c]pyrimidin-7-yloxy)-3-methylphenyl)-6-methoxy-5-morpholinoquinazolin-4-amine;   N-(4-([1,2,4]triazolo[1,5-c]pyrimidin-7-yloxy)-3-methylphenyl)-6-methoxy-5-((1-methylpiperidin-4-yl)oxy)quinazolin-4-amine;   N-(4-([1,2,4]triazolo[1,5-c]pyrimidin-7-yloxy)-3-methylphenyl)-6-methoxy-5-((1-methylpyrrolidin-3-yl)oxy)quinazolin-4-amine;   N-(4-([1,2,4]triazolo[1,5-c]pyrimidin-7-yloxy)-3-methylphenyl)-5-(3-(dimethylamino)cyclobutoxy)-6-methoxyquinazolin-4-amine;   N-(4-([1,2,4]triazolo[1,5-c]pyrimidin-7-yloxy)-3-methylphenyl)-5-((3-(dimethylamino)cyclopentyl)oxy)-6-methoxyquinazolin-4-amine;   N-(4-([1,2,4]triazolo[1,5-c]pyrimidin-7-yloxy)-3-methylphenyl)-5-((4-(dimethylamino)cyclohexyl)oxy)-6-methoxyquinazolin-4-amine;   N-(4-([1,2,4]triazolo[1,5-c]pyrimidin-7-yloxy)-3-methylphenyl)-6-methoxy-5-(4-methylpiperazin-1-yl)quinazolin-4-amine;   N-(4-([1,2,4]triazolo[1,5-c]pyrimidin-7-yloxy)-3-methylphenyl)-5-(3-(dimethylamino)azetidin-1-yl)-6-ethoxyquinazolin-4-amine;   N-(4-([1,2,4]triazolo[1,5-c]pyrimidin-7-yloxy)-3-methylphenyl)-5-(3-(dimethylamino)azetidin-1-yl)-6-(2-fluoroethoxy)quinazolin-4-amine;   N-(4-([1,2,4]triazolo[1,5-c]pyrimidin-7-yloxy)-3-methylphenyl)-6-(difluoromethoxy)-5-((1S,5S)-2-methyl-2,6-diazabicyclo[3.2.0]heptan-6-yl)quinazolin-4-amine;   N-(4-([1,2,4]triazolo[1,5-c]pyrimidin-7-yloxy)-3-methylphenyl)-5-((1R,5R)-2-methyl-2,6-diazabicyclo[3.2.0]heptan-6-yl)-6-(((S)-tetrahydrofuran-3-yl)oxy)quinazolin-4-amine;   cis-N-(4-([1,2,4]triazolo[1,5-c]pyrimidin-7-yloxy)-3-methylphenyl)-5-((3-fluoro-1-methylpiperidin-4-yl)oxy)-6-methoxyquinazolin-4-amine;   trans-N-(4-([1,2,4]triazolo[1,5-c]pyrimidin-7-yloxy)-3-methylphenyl)-5-((3-fluoro-1-methylpiperidin-4-yl)oxy)-6-methoxyquinazolin-4-amine;   (R)—N-(4-([1,2,4]triazolo[1,5-c]pyrimidin-7-yloxy)-3-methylphenyl)-5-((3,3-difluoro-1-methylpiperidin-4-yl)oxy)-6-(difluoromethoxy)quinazolin-4-amine;   (S)—N-(4-([1,2,4]triazolo[1,5-c]pyrimidin-7-yloxy)-3-methylphenyl)-5-((3,3-difluoro-1-methylpiperidin-4-yl)oxy)-6-(difluoromethoxy)quinazolin-5-amine;   N-(4-([1,2,4]triazolo[1,5-c]pyrimidin-7-yloxy)-3-methylphenyl)-5-((1S,5S)-2-methyl-2,6-diazabicyclo[3.2.0]heptan-6-yl)-6-(((S)-tetrahydrofuran-3-yl)oxy)quinazolin-4-amine;   N-(4-([1,2,4]triazolo[1,5-c]pyrimidin-7-yloxy)-3-methylphenyl)-5-((1R,5R)-2-methyl-2,6-diazabicyclo[3.2.0]heptan-6-yl)-6-(((S)-tetrahydrofuran-3-yl)oxy)quinazolin-4-amine;   N-(4-([1,2,4]triazolo[1,5-c]pyrimidin-7-yloxy)-3-methylphenyl)-5-(((R)-3,3-difluoro-1-methylpiperidin-4-yl)oxy)-6-(((S)-tetrahydrofuran-3-yl)oxy)quinazolin-4-amine;   N-(4-([1,2,4]triazolo[1,5-c]pyrimidin-7-yloxy)-3-methylphenyl)-5-(((S)-3,3-difluoro-1-methylpiperidin-4-yl)oxy)-6-(((S)-tetrahydrofuran-3-yl)oxy)quinazolin-4-amine;   N-(4-([1,2,4]triazolo[1,5-c]pyrimidin-7-yloxy)-3-methylphenyl)-6-cyclopropoxy-5-((1S,5S)-2-methyl-2,6-diazabicyclo[3.2.0]heptan-6-yl)quinazolin-4-amine;   N-(4-([1,2,4]triazolo[1,5-c]pyrimidin-7-yloxy)-3-methylphenyl)-6-cyclopropoxy-5-((1R,5R)-2-methyl-2,6-diazabicyclo[3.2.0]heptan-6-yl)quinazolin-4-amine;   N-(4-([1,2,4]triazolo[1,5-c]pyrimidin-7-yloxy)-3-methylphenyl)-6-isopropoxy-5-((1S,5S)-2-methyl-2,6-diazabicyclo[3.2.0]heptan-6-yl)quinazolin-4-amine;   N-(4-([1,2,4]triazolo[1,5-c]pyrimidin-7-yloxy)-3-methylphenyl)-6-isopropoxy-5-((1R,5R)-2-methyl-2,6-diazabicyclo[3.2.0]heptan-6-yl)quinazolin-4-amine;   (R)—N-(4-([1,2,4]triazolo[1,5-c]pyrimidin-7-yloxy)-3-methylphenyl)-6-cyclopropoxy-5-((3,3-difluoro-1-methylpiperidin-4-yl)oxy)quinazolin-4-amine;   (S)—N-(4-([1,2,4]triazolo[1,5-c]pyrimidin-7-yloxy)-3-methylphenyl)-6-cyclopropoxy-5-((3,3-difluoro-1-methylpiperidin-4-yl)oxy)quinazolin-4-amine;   (R)—N-(4-([1,2,4]triazolo[1,5-c]pyrimidin-7-yloxy)-3-methylphenyl)-5-((3,3-difluoro-1-methylpiperidin-4-yl)oxy)-6-isopropoxyquinazolin-4-amine;   (S)—N-(4-([1,2,4]triazolo[1,5-c]pyrimidin-7-yloxy)-3-methylphenyl)-5-((3,3-difluoro-1-methylpiperidin-4-yl)oxy)-6-isopropoxyquinazolin-4-amine;   (R)—N-(4-([1,2,4]triazolo[1,5-c]pyrimidin-7-yloxy)-3-methylphenyl)-5-((3,3-difluoro-1-methylpiperidin-4-yl)oxy)-6-methoxyquinazolin-4-amine;   (S)—N-(4-([1,2,4]triazolo[1,5-c]pyrimidin-7-yloxy)-3-methylphenyl)-5-((3,3-difluoro-1-methylpiperidin-4-yl)oxy)-6-methoxyquinazolin-4-amine;   (R)—N-(4-([1,2,4]triazolo[1,5-c]pyrimidin-7-yloxy)-3-chlorophenyl)-5-((3,3-difluoro-1-methylpiperidin-4-yl)oxy)-6-methoxyquinazolin-4-amine;   (S)—N-(4-([1,2,4]triazolo[1,5-c]pyrimidin-7-yloxy)-3-chlorophenyl)-5-((3,3-difluoro-1-methylpiperidin-4-yl)oxy)-6-methoxyquinazolin-4-amine;   N-(4-([1,2,4]triazolo[1,5-c]pyrimidin-7-yloxy)-3-methylphenyl)-5-((3,3-difluoro-1-(methyl-d3)piperidin-4-yl)oxy)-6-methoxyquinazolin-4-amine;   (R)—N-(4-([1,2,4]triazolo[1,5-c]pyrimidin-7-yloxy)-3-methylphenyl)-5-((3,3-difluoro-1-methylpiperidin-4-yl)oxy)-6-(methoxy-d3)quinazolin-4-amine;   (S)—N-(4-([1,2,4]triazolo[1,5-c]pyrimidin-7-yloxy)-3-methylphenyl)-5-((3,3-difluoro-1-methylpiperidin-4-yl)oxy)-6-(methoxy-d3)quinazolin-4-amine;   N-(4-([1,2,4]triazolo[1,5-c]pyrimidin-7-yloxy)-3-methylphenyl)-6-methoxy-5-(8-methyl-5-oxa-2,8-diazaspiro[3.5]nonan-2-yl)quinazolin-4-amine;   N-(4-([1,2,4]triazolo[1,5-c]pyrimidin-7-yloxy)-3-methylphenyl)-5-((3R,4S)-3-(dimethylamino)-4-fluoropyrrolidin-1-yl)-6-methoxyquinazolin-4-amine;   N-(4-([1,2,4]triazolo[1,5-c]pyrimidin-7-yloxy)-3-methylphenyl)-5-((3R,4R)-3-(dimethylamino)-4-fluoropyrrolidin-1-yl)-6-methoxyquinazolin-4-amine;   N-(4-([1,2,4]triazolo[1,5-c]pyrimidin-7-yloxy)-3-methylphenyl)-6-methoxy-5-(5-methyl-8-oxa-2,5-diazaspiro[3.5]nonan-2-yl)quinazolin-4-amine;   N-(4-([1,2,4]triazolo[1,5-c]pyrimidin-7-yloxy)-3-methylphenyl)-6-methoxy-5-(4-methylhexahydropyrrolo[3,4-b][1,4]oxazin-6(2H)-yl)quinazolin-4-amine;   (S)—N-(4-([1,2,4]triazolo[1,5-c]pyrimidin-7-yloxy)-3-methylphenyl)-5-(7-fluoro-5-methyl-2,5-diazaspiro[3.4]octan-2-yl)-6-methoxyquinazolin-4-amine;   (R)—N-(4-([1,2,4]triazolo[1,5-c]pyrimidin-7-yloxy)-3-methylphenyl)-5-(7-fluoro-5-methyl-2,5-diazaspiro[3.4]octan-2-yl)-6-methoxyquinazolin-4-amine;   N-(4-([1,2,4]triazolo[1,5-c]pyrimidin-7-yloxy)-3-methylphenyl)-6-methoxy-5-((I S,5S)-2-methyl-2,6-diazabicyclo[3.2.0]heptan-6-yl)quinazolin-4-amine;   N-(4-([1,2,4]triazolo[1,5-c]pyrimidin-7-yloxy)-3-methylphenyl)-6-methoxy-5-((1R,5R)-2-methyl-2,6-diazabicyclo[3.2.0]heptan-6-yl)quinazolin-4-amine;   (R)—N-(4-([1,2,4]triazolo[1,5-c]pyrimidin-7-yloxy)-3-methylphenyl)-5-(8-fluoro-5-methyl-2,5-diazaspiro[3.5]nonan-2-yl)-6-methoxyquinazolin-4-amine;   (S)—N-(4-([1,2,4]triazolo[1,5-c]pyrimidin-7-yloxy)-3-methylphenyl)-5-(8-fluoro-5-methyl-2,5-diazaspiro[3.5]nonan-2-yl)-6-methoxyquinazolin-4-amine;   N-(4-([1,2,4]triazolo[1,5-c]pyrimidin-7-yloxy)-3-methylphenyl)-6-methoxy-5-(6-methyl-2,6-diazaspiro[3.4]octan-2-yl)quinazolin-4-amine;   N-(4-([1,2,4]triazolo[1,5-c]pyrimidin-7-yloxy)-3-methylphenyl)-6-methoxy-5-(7-methyl-2,7-diazaspiro[3.5]nonan-2-yl)quinazolin-4-amine;   (S)—N-(4-([1,2,4]triazolo[1,5-c]pyrimidin-7-yloxy)-3-methylphenyl)-5-((3,3-difluoro-1-methylpiperidin-4-yl)oxy)-7-methoxyquinazolin-4-amine;   (R)—N-(4-([1,2,4]triazolo[1,5-c]pyrimidin-7-yloxy)-3-methylphenyl)-5-((3,3-difluoro-1-methylpiperidin-4-yl)oxy)-7-methoxyquinazolin-4-amine;   N-(4-([1,2,4]triazolo[1,5-c]pyrimidin-7-yloxy)-3-methylphenyl)-7-methoxy-5-((1-methylpiperidin-4-yl)oxy)quinazolin-4-amine;   N4-(4-([1,2,4]triazolo[1,5-c]pyrimidin-7-yloxy)-3-methylphenyl)-N6-(4,4-dimethyl-4,5-dihydrooxazol-2-yl)-5-(3-(dimethylamino)azetidin-1-yl)quinazoline-4,6-diamine;   N-(4-([1,2,4]triazolo[1,5-c]pyrimidin-7-yloxy)-3-methylphenyl)-5-(8-methyl-5-oxa-2,8-diazaspiro[3.5]nonan-2-yl)quinazolin-4-amine;   N-(4-([1,2,4]triazolo[1,5-c]pyrimidin-7-yloxy)-3-methylphenyl)-6-(methoxy-d3)-5-((1S,5S)-2-methyl-2,6-diazabicyclo[3.2.0]heptan-6-yl)quinazolin-4-amine;   N-(4-([1,2,4]triazolo[1,5-c]pyrimidin-7-yloxy)-3-methylphenyl)-6-(methoxy-d3)-5-((1R,5R)-2-methyl-2,6-diazabicyclo[3.2.0]heptan-6-yl)quinazolin-4-amine;   N-(4-([1,2,4]triazolo[1,5-c]pyrimidin-7-yloxy)-3-methylphenyl)-5-(7,7-difluoro-5-methyl-2,5-diazaspiro[3.4]octan-2-yl)-6-methoxyquinazolin-4-amine;   N-(4-([1,2,4]triazolo[1,5-c]pyrimidin-7-yloxy)-3-methylphenyl)-5-(7,7-difluoro-5-methyl-2,5-diazaspiro[3.4]octan-2-yl)-6-(difluoromethoxy)quinazolin-4-amine;   N-(4-([1,2,4]triazolo[1,5-c]pyrimidin-7-yloxy)-3-methylphenyl)-5-(7,7-difluoro-5-methyl-2,5-diazaspiro[3.4]octan-2-yl)-6-(methoxy-d3)quinazolin-4-amine;   (S)—N-(4-([1,2,4]triazolo[1,5-c]pyrimidin-7-yloxy)-3-methylphenyl)-5-(7,7-difluoro-5-methyl-2,5-diazaspiro[3.4]octan-2-yl)-6-((tetrahydrofuran-3-yl)oxy)quinazolin-4-amine;   N-(4-([1,2,4]triazolo[1,5-c]pyrimidin-7-yloxy)-3-methylphenyl)-6-methoxy-5-(6-methyl-2,6-diazabicyclo[3.2.0]heptan-2-yl)quinazolin-4-amine;   N-(4-([1,2,4]triazolo[1,5-c]pyrimidin-7-yloxy)-3-methylphenyl)-6-methoxy-5-(5-methylhexahydropyrrolo[3,4-c]pyrrol-2(1H)-yl)quinazolin-4-amine;   N-(4-([1,2,4]triazolo[1,5-c]pyrimidin-7-yloxy)-3-methylphenyl)-6-methoxy-5-(4-methyloctahydro-1H-pyrrolo[3,2-b]pyridin-1-yl)quinazolin-4-amine;   N-(4-([1,2,4]triazolo[1,5-c]pyrimidin-7-yloxy)-3-methylphenyl)-6-methoxy-5-(3-methyl-3,7-diazabicyclo[4.2.0]octan-7-yl)quinazolin-4-amine;   N-(4-([1,2,4]triazolo[1,5-c]pyrimidin-7-yloxy)-3-methylphenyl)-6-methoxy-5-(3-methyl-3,6-diazabicyclo[3.2.0]heptan-6-yl)quinazolin-4-amine;   N-(4-([1,2,4]triazolo[1,5-c]pyrimidin-7-yloxy)-3-methylphenyl)-5-(2-cyclopropyl-2,6-diazabicyclo[3.2.0]heptan-6-yl)-6-methoxyquinazolin-4-amine;   N-(4-([1,2,4]triazolo[1,5-c]pyrimidin-7-yloxy)-3-methylphenyl)-5-(2-(2,2-difluoroethyl)-2,6-diazabicyclo[3.2.0]heptan-6-yl)-6-methoxyquinazolin-4-amine;   N-(4-([1,2,4]triazolo[1,5-c]pyrimidin-7-yloxy)-3-methylphenyl)-6-methoxy-5-((1S,5S)-2-(methyl-d3)-2,6-diazabicyclo[3.2.0]heptan-6-yl)quinazolin-4-amine;   N-(4-([1,2,4]triazolo[1,5-c]pyrimidin-7-yloxy)-3-methylphenyl)-5-((1S,5S)-2-(2-fluoroethyl)-2,6-diazabicyclo[3.2.0]heptan-6-yl)-6-methoxyquinazolin-4-amine;   N-(4-([1,2,4]triazolo[1,5-c]pyrimidin-7-yloxy)-3-methylphenyl)-6-methoxy-5-((1S,5S)-2-(2,2,2-trifluoroethyl)-2,6-diazabicyclo[3.2.0]heptan-6-yl)quinazolin-4-amine;   (R)—N-(4-([1,2,4]triazolo[1,5-c]pyrimidin-7-yloxy)-3-methylphenyl)-5-((3,3-difluoro-1-methylpiperidin-4-yl)oxy)-6-(trifluoromethoxy)quinazolin-4-amine;   (S)—N-(4-([1,2,4]triazolo[1,5-c]pyrimidin-7-yloxy)-3-methylphenyl)-5-((3,3-difluoro-1-methylpiperidin-4-yl)oxy)-6-(trifluoromethoxy)quinazolin-4-amine;   (R)—N-(4-([1,2,4]triazolo[1,5-c]pyrimidin-7-yloxy)-3-methylphenyl)-5-((4,4-difluoro-1-methylpyrrolidin-3-yl)oxy)-6-methoxyquinazolin-4-amine;   (S)—N-(4-([1,2,4]triazolo[1,5-c]pyrimidin-7-yloxy)-3-methylphenyl)-5-((4,4-difluoro-1-methylpyrrolidin-3-yl)oxy)-6-methoxyquinazolin-4-amine;   (R)—N-(4-([1,2,4]triazolo[1,5-c]pyrimidin-7-yloxy)-3-methylphenyl)-5-((3,3-difluoropiperidin-4-yl)oxy)-6-methoxyquinazolin-4-amine;   (R)—N-(4-([1,2,4]triazolo[1,5-c]pyrimidin-7-yloxy)-3-methylphenyl)-5-((3,3-difluoro-1-(methyl-d3)piperidin-4-yl)oxy)-6-(methoxy-d3)quinazolin-4-amine;   (R)—N-(4-([1,2,4]triazolo[1,5-c]pyrimidin-7-yloxy)-3-methylphenyl)-5-((3,3-difluoro-1-isopropylpiperidin-4-yl)oxy)-6-methoxyquinazolin-4-amine;   (R)—N-(4-([1,2,4]triazolo[1,5-c]pyrimidin-7-yloxy)-3-methylphenyl)-5-((1-cyclopropyl-3,3-difluoropiperidin-4-yl)oxy)-6-methoxyquinazolin-4-amine;   1-(4-(4-((4-([1,2,4]triazolo[1,5-c]pyrimidin-7-yloxy)-3-methylphenyl)amino)-5-(3-(dimethylamino)azetidin-1-yl)quinazolin-6-yl)-3,6-dihydropyridin-1(2H)-yl)prop-2-en-1-one;   (R)-1-(4-(4-((4-([1,2,4]triazolo[1,5-c]pyrimidin-7-yloxy)-3-methylphenyl)amino)-5-((3,3-difluoro-1-methylpiperidin-4-yl)oxy)quinazolin-6-yl)-3,6-dihydropyridin-1(2H)-yl)prop-2-en-1-one;   1-(5-(4-((4-([1,2,4]triazolo[1,5-c]pyrimidin-7-yloxy)-3-methylphenyl)amino)-5-(3-(dimethylamino)azetidin-1-yl)quinazolin-6-yl)-3,6-dihydropyridin-1(2H)-yl)prop-2-en-1-one;   1-(4-(4-((4-([1,2,4]triazolo[1,5-c]pyrimidin-7-yloxy)-3-methylphenyl)amino)-5-(3-(dimethylamino)azetidin-1-yl)quinazolin-7-yl)-3,6-dihydropyridin-1(2H)-yl)prop-2-en-1-one;   1-(5-(4-((4-([1,2,4]triazolo[1,5-c]pyrimidin-7-yloxy)-3-methylphenyl)amino)-5-(3-(dimethylamino)azetidin-1-yl)quinazolin-7-yl)-3,6-dihydropyridin-1(2H)-yl)prop-2-en-1-one;   1-(4-((4-((4-([1,2,4]triazolo[1,5-c]pyrimidin-7-yloxy)-3-methylphenyl)amino)-5-(3-(dimethylamino)pyrrolidin-1-yl)quinazolin-6-yl)oxy)piperidin-1-yl)prop-2-en-1-one;   (R)-4-((4-([1,2,4]triazolo[1,5-c]pyrimidin-7-yloxy)-3-methylphenyl)amino)-5-((3,3-difluoro-1-methylpiperidin-4-yl)oxy)-6-methoxyquinoline-3-carbonitrile;   (R)-4-((4-([1,2,4]triazolo[1,5-c]pyrimidin-7-yloxy)-3-methylphenyl)amino)-5-((3,3-difluoro-1-methylpiperidin-4-yl)oxy)-7-methoxyquinoline-3-carbonitrile;   4-((4-([1,2,4]triazolo[1,5-c]pyrimidin-7-yloxy)-3-methylphenyl)amino)-5-(((R)-3,3-difluoro-1-methylpiperidin-4-yl)oxy)quinazolin-6-yl 2,4-dimethylpiperazine-1-carboxylate;   (R,E)-N-(4-((4-([1,2,4]triazolo[1,5-c]pyrimidin-7-yloxy)-3-methylphenyl)amino)-3-cyano-5-((3,3-difluoro-1-methylpiperidin-4-yl)oxy)quinolin-6-yl)-4-(dimethylamino)but-2-enamide;   (R,E)-N-(4-((4-([1,2,4]triazolo[1,5-c]pyrimidin-7-yloxy)-3-methylphenyl)amino)-3-cyano-5-((3,3-difluoro-1-methylpiperidin-4-yl)oxy)-7-ethoxyquinolin-6-yl)-4-(dimethylamino)but-2-enamide;   (R,E)-N-(4-((4-([1,2,4]triazolo[1,5-c]pyrimidin-7-yloxy)-3-methylphenyl)amino)-5-((3,3-difluoro-1-methylpiperidin-4-yl)oxy)-7-ethoxyquinazolin-6-yl)-4-(dimethylamino)but-2-enamide;   (R,E)-N-(4-((4-([1,2,4]triazolo[1,5-c]pyrimidin-7-yloxy)-3-methylphenyl)amino)-5-((3,3-difluoro-1-methylpiperidin-4-yl)oxy)quinazolin-6-yl)-4-(dimethylamino)but-2-enamide;   (E)-N-(4-((4-([1,2,4]triazolo[1,5-c]pyrimidin-7-yloxy)-3-methylphenyl)amino)-3-cyano-5-(((R)-3,3-difluoro-1-methylpiperidin-4-yl)oxy)quinolin-6-yl)-3-((R)-1-methylpyrrolidin-2-yl)acrylamide;   (E)-N-(4-((4-([1,2,4]triazolo[1,5-c]pyrimidin-7-yloxy)-3-methylphenyl)amino)-3-cyano-5-(((R)-3,3-difluoro-1-methylpiperidin-4-yl)oxy)-7-ethoxyquinolin-6-yl)-3-((R)-1-methylpyrrolidin-2-yl)acrylamide;   (E)-N-(4-((4-([1,2,4]triazolo[1,5-c]pyrimidin-7-yloxy)-3-methylphenyl)amino)-5-(((R)-3,3-difluoro-1-methylpiperidin-4-yl)oxy)quinazolin-6-yl)-3-((R)-1-methylpyrrolidin-2-yl)acrylamide;   (E)-N-(4-((4-([1,2,4]triazolo[1,5-c]pyrimidin-7-yloxy)-3-methylphenyl)amino)-5-(((R)-3,3-difluoro-1-methylpiperidin-4-yl)oxy)-7-ethoxyquinazolin-6-yl)-3-((R)-1-methylpyrrolidin-2-yl)acrylamide;   (E)-N-(4-((4-([1,2,4]triazolo[1,5-c]pyrimidin-7-yloxy)-3-methylphenyl)amino)-5-(3-(dimethylamino)azetidin-1-yl)quinazolin-6-yl)-4-(dimethylamino)but-2-enamide;   (R,E)-N-(4-((4-([1,2,4]triazolo[1,5-c]pyrimidin-7-yloxy)-3-methylphenyl)amino)-5-(3-(dimethylamino)azetidin-1-yl)quinazolin-6-yl)-3-(1-methylpyrrolidin-2-yl)acrylamide; and   (R)—N-(4-([1,2,4]triazolo[1,5-c]pyrimidin-7-yloxy)-3-methylphenyl)-5-((3,3-difluoro-1-methylpiperidin-4-yl)oxy)-6,7-dimethoxyquinazolin-4-amine.   
     
     
         24 . A pharmaceutical composition comprising a compound or a pharmaceutically acceptable salt thereof, as claimed in any one of the preceding claims, and at least one pharmaceutically acceptable excipient. 
     
     
         25 . The pharmaceutical composition of  claim 24 , which does not comprise an agent for facilitating BBB entry. 
     
     
         26 . A method of treating HER2-associated diseases or conditions in a subject in need thereof, comprising administering to the subject a therapeutically effective amount of a compound or a pharmaceutically acceptable salt thereof, as claimed in any one of the  claims 1  to  23 . 
     
     
         27 . The method of  claim 26 , wherein the HER2-associated diseases or conditions are cancer such as breast cancer, gastric cancer, mCRC, NSCLC or metastasis thereof. 
     
     
         28 . The method of  claim 27 , wherein the metastasis is in brain. 
     
     
         29 . The method of  claim 28 , wherein the compound or a pharmaceutically acceptable salt thereof is capable of BBB entry in the absence of an agent for facilitating BBB entry. 
     
     
         30 . A compound or a pharmaceutically acceptable salt thereof, as claimed in any one of the  claims 1  to  23 , for use in the treatment of HER2-associated diseases or conditions. 
     
     
         31 . Use of a compound or a pharmaceutically acceptable salt thereof, as claimed in any one of the  claims 1  to  23 , in the manufacture of a medicament for the treatment of HER2-associated diseases or conditions. 
     
     
         32 . A compound or a pharmaceutically acceptable salt thereof, as claimed in any one of the  claims 1  to  23 , for use in the treatment of HER2-associated diseases or conditions, wherein the compound is administered simultaneously, separately or sequentially with one or more chemotherapeutic agents such as capecitabine, T-DM1, radiotherapy and anti-HER2 antibody.