US2014171407A1PendingUtilityA1

1,7-diazacarbazoles and methods of use

66
Assignee: GENENTECH INCPriority: Dec 16, 2009Filed: Feb 17, 2014Published: Jun 19, 2014
Est. expiryDec 16, 2029(~3.4 yrs left)· nominal 20-yr term from priority
A61K 31/4375A61K 45/06A61K 31/4545A61P 43/00A61K 31/5377A61P 35/02C07D 471/14C07D 519/00A61K 31/55A61K 31/496C07D 453/02A61K 31/439A61P 35/00A61K 31/437C07D 413/12
66
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Claims

Abstract

The invention relates to 1,7-diazacarbazole compounds of Formula (I), (I-a) and (I-b) which are useful as kinase inhibitors, more specifically useful as checkpoint kinase 1 (chk1) inhibitors, thus useful as cancer therapeutics. The invention also relates to compositions, more specifically pharmaceutical compositions comprising these compounds and methods of using the same to treat various forms of cancer and hyperproliferative disorders, as well as methods of using the compounds for in vitro, in situ, and in vivo diagnosis or treatment of mammalian cells, or associated pathological conditions.

Claims

exact text as granted — not AI-modified
We claim: 
     
         1 . A compound of formula (I), (I-a), or (I-b), or a solvate, hydrate or salt thereof: 
       
         
           
           
               
               
           
         
         X is CR 2  or N; 
         Y is CR 4  or N; 
         Z is CR 8  or N; provided that no more than one of X, Y and Z is N at the same time; 
         R 2  is H, halo, CN, CF 3 , —OCF 3 , OH, —NO 2 , C 1 -C 5  alkyl, —O(C 1 -C 5  alkyl), —S(C 1 -C 5  alkyl), or N(R 22 ) 2 ; 
         R 3  is H, halo, CN, —O—R 9 , —N(R 22 )—R 9 , —S(O) p —R 9 , or R 9 ; 
         p is 0, 1 or 2; 
         R 4  is H, halo, CN, CF 3 , —OCF 3 , OH, —NO 2 , —(CR 14 R 15 ) n C(═Y′)OR 11 , —(CR 14 R 15 ) n C(═Y′)NR 11 R 12 , —(CR 14 R 15 ) n NR 11 R 12 , —(CR 14 R 15 ) n OR 11 , —(CR 14 R 15 ) n S(O) p R 11 , —(CR 14 R 15 ) n NR 12 C(═Y′)R 11 , —(CR 14 R 15 ) n NR 12 C(═Y′)OR 11 , —(CR 14 R 15 ) n NR 12 C(═Y′)NR 11 R 12 , —(CR 14 R 15 ) n NR 12 SO 2 R 11 , —(CR 14 R 15 ) n OC(═Y′)R 11 , —(CR 14 R 15 ) n OC(═Y′)NR 11 R 12 , —(CR 14 R 15 ) n S(O) 2 NR 11 R 12 , alkyl, alkenyl, alkynyl, cycloalkyl, heterocyclyl, aryl, or heteroaryl wherein said alkyl, alkenyl, alkynyl, cycloalkyl, heterocyclyl, aryl and heteroaryl are optionally substituted with one to four R 13  groups; 
         each n is independently 0-5; 
         R 5  is H, halo, CN, CF 3 , —OCF 3 , OH, —NO 2 , —(CR 14 R 15 ) n C(═Y′)OR 11 , —(CR 14 R 15 ) n C(═Y′)NR 11 R 12 , —(CR 14 R 15 ) n NR 12 C(═Y′)R 11 , —(CR 14 R 15 ) n NR 11 R 12 , —(CR 14 R 15 ) n OR 11 , —(CR 14 R 15 ) n S(O) p R 11 , —(CR 14 R 15 ) n NR 12 C(═Y′)OR 11 , —(CR 14 R 15 ) n NR 12 C(═Y′)NR 11 R 12 , —(CR 14 R 15 ) n NR 12 SO 2 R 11 , —(CR 14 R 15 ) n OC(═Y′)R 11 , —(CR 14 R 15 ) n OC(═Y′)NR 11 R 12 , —(CR 14 R 15 ) n S(O) 2 NR 11 R 12 , alkyl, alkenyl, alkynyl, cycloalkyl, heterocyclyl, aryl, heteroaryl wherein the said alkyl, alkenyl, alkynyl, cycloalkyl, heterocyclyl, aryl and heteroaryl are optionally substituted with one to four R 13  groups; 
         R 6  is H, CN, —CF 3 , —OCF 3 , halo, —C(═Y′)OR 11 , —C(═Y′)NR 11 R 12 , —OR 11 , —OC(═Y′)R 11 , —NR 11 R 12 , —NR 12 C(═Y′)R 11 , —NR 12 C(═Y′)NR 11 R 12 , —NR 12 S(O) q R 11 , —SR 11 , —S(O)R 11 , —S(O) 2 R 11 , —OC(═Y′)NR 11 R 12 , —S(O) 2 NR 11 R 12 , alkyl, alkenyl, alkynyl, cycloalkyl, heterocyclyl, aryl, or heteroaryl wherein said alkyl, alkenyl, alkynyl, cycloalkyl, heterocyclyl, aryl and heteroaryl are optionally substituted by one to four R 13  groups; 
         R 7  is H, OH, CN, O(C 1 -C 3  alkyl), or C 1 -C 4  alkyl, wherein each said alkyl is optionally substituted with one to three groups independently selected from halo, N(R 22 ) 2  or OR 22 ; 
         R 8  is H, halo, CN, NO 2 , N(R 22 ) 2 , OH, O(C 1 -C 3  alkyl), or C 1 -C 3  alkyl, wherein each said alkyl is optionally substituted with one to three fluoro groups; 
         each R 9  is independently alkyl, alkenyl, alkynyl, cycloalkyl, heterocyclyl, aryl, heteroaryl, wherein each member of R 9  is independently substituted with one to three R 10  groups; 
         each R 10  is independently H, CN, —CF 3 , —OCF 3 , —NO 2 , halo, R 11 , —OR 11 , —NR 12 C(═Y′)R 11 , —NR 12 C(═NR 12 )R 11 , —NR 12 S(O) q R 11 , —SR 11 , —NR 11 R 12 , oxo, —C(═Y′)OR 11 , —C(═Y′)NR 11 R 12 , —S(O) q R 11 , —NR 12 C(═Y′)OR 11 , —NR 12 C(═Y′)NR 11 R 12 , —OC(═Y′)R 11 , —OC(═Y′)NR 11 R 12 , or —S(O) 2 NR 11 R 12 ; 
         each q independently is 1 or 2; 
         R 11  and R 12  are independently H, alkyl, cycloalkyl, heterocyclyl, aryl or heteroaryl, wherein said alkyl, cycloalkyl, heterocyclyl, aryl and heteroaryl are optionally substituted with one to four R 13  groups, wherein two geminal R 13  groups are optionally taken together with the atom to which they are attached to form a 3-6 membered ring having additional 0-2 heteroatoms selected from O, S, and N, said ring being optionally substituted with one to four R 18  groups; 
         R 11  and R 12  are optionally taken together with the attached N atom to form a 4-7 membered ring having additional 0-2 heteroatoms selected from O, S, and N, said ring being optionally substituted with one to four R 13  groups; 
         each R 13  is independently halo, CN, CF 3 , —OCF 3 , —NO 2 , oxo, —(CR 14 R 15 ) n C(═Y′)R 16 , —(CR 14 R 15 ) n C(═Y′)OR 16 , —(CR 14 R 15 ) n C(═Y′)NR 16 R 17 , —(CR 14 R 15 ) n NR 16 R 17 , —(CR 14 R 15 ) n OR 16 , —(CR 14 R 15 ) n SR 16 , —(CR 14 R 15 ) n NR 16 C(═Y′)R 17 , —(CR 14 R 15 ) n NR 16 C(═Y′)OR 17 , —(CR 14 R 15 ) n NR 17 C(═Y′)NR 16 R 17 , —(CR 14 R 15 ) n NR 17 SO 2 R 16 , —(CR 14 R 15 ) n OC(═Y′)R 16 , —(CR 14 R 15 ) n OC(═Y′)NR 16 R 17 , —(CR 14 R 15 ) n S(O)R 16 , —(CR 14 R 15 ) n S(O) 2 R 16 , —(CR 14 R 15 ) n S(O) 2 NR 16 R 17 , or R 16 ; 
         R 14  and R 15  are independently selected from H, alkyl, cycloalkyl, heterocyclyl, aryl or heteroaryl, wherein said alkyl, cycloalkyl, heterocyclyl, aryl and heteroaryl are optionally substituted with one to four R 18  groups; 
         R 16  and R 17  are independently H, alkyl, cycloalkyl, heterocyclyl, aryl or heteroaryl, wherein said alkyl, cycloalkyl, heterocyclyl, aryl and heteroaryl are optionally substituted with one to four R 18  groups; 
         R 16  and R 17  are optionally taken together with the attached N atom to form a 5-6 membered ring having additional 0-2 heteroatoms selected from O, S, and N, said ring being optionally substituted with one to four R 18  groups; 
         each R 18  is independently H, alkyl, cycloalkyl, heterocyclyl, aryl, heteroaryl, halo, CN, CF 3 , —OCF 3 , —NO 2 , oxo, —(CR 19 R 20 ) n C(═Y′)R 23 , —(CR 19 R 20 ) n C(═Y′)OR 23 , —(CR 19 R 20 ) n C(═Y′)NR 23 R 24 , —(CR 19 R 20 ) n NR 23 R 24 , —(CR 19 R 20 ) n OR 23 , —(CR 19 R 20 ) n —SR 23 , —(CR 19 R 20 ) n NR 24 C(═Y′)R 23 , —(CR 19 R 20 ) n NR 24 C(═Y′)OR 23 , —(CR 19 R 20 ) n NR 22 C(═Y′)NR 23 R 24 , —(CR 19 R 20 ) n NR 24 SO 2 R 23 , —(CR 19 R 20 ) n OC(═Y′)R 23 , —(CR 19 R 20 ) n OC(═Y′)NR 23 R 24 , —(CR 19 R 20 ) n S(O)R 23 , —(CR 19 R 20 ) n S(O) 2 R 23 , or —(CR 19 R 20 ) n S(O) 2 NR 23 R 24 , wherein said alkyl, cycloalkyl, heterocyclyl, aryl, and heteroaryl are optionally substituted with one to four R 21  groups; 
         R 19  and R 20  are independently H, alkyl, cycloalkyl, heterocyclyl, aryl or heteroaryl, wherein said alkyl, cycloalkyl, heterocyclyl, aryl and heteroaryl are optionally substituted with one to four R 25  groups; 
         R 23  and R 24  are independently H, alkyl, cycloalkyl, heterocyclyl, aryl or heteroaryl, wherein said alkyl, cycloalkyl, heterocyclyl, aryl and heteroaryl are optionally substituted with one to four R 21  groups; 
         R 23  and R 24  are optionally taken together with the attached N atom to form a 5-6 membered ring having additional 0-2 heteroatoms selected from O, S, and N, said ring being optionally substituted with one to four R 21  groups; 
         each R 21  is independently H, alkyl, cycloalkyl, heterocyclyl, aryl, heteroaryl, halo, CN, CF 3 , —OCF 3 , —NO 2 , oxo, —C(═Y′)R 25 , —C(═Y′)OR 25 , —C(═Y′)NR 25 R 26 , —NR 25 R 26 , —OR 25 , —SR 25 , —NR 26 C(═Y′)R 25 , —NR 26 C(═Y′)OR 25 , —NR 22 C(═Y′)NR 25 R 26 , —NR 26 SO 2 R 25 , —OC(═Y′)R 25 , —OC(═Y′)NR 25 R 26 , —S(O)R 25 , —S(O) 2 R 25 , or —S(O) 2 NR 25 R 26 , wherein said alkyl, cycloalkyl, heterocyclyl, aryl, and heteroaryl are optionally substituted with one to four R 25  groups; 
         each R 25  and R 26  is independently H, alkyl, cycloalkyl, heterocyclyl, aryl, or heteroaryl, wherein said alkyl, cycloalkyl, heterocyclyl, aryl, or heteroaryl is optionally substituted with one to four groups selected from halo, —CN, —OCF 3 , —CF 3 , —NO 2 , —C 1 -C 6  alkyl, —OH, oxo, —SH, —O(C 1 -C 6  alkyl), —S(C 1 -C 6  alkyl), —NH 2 , —NH(C 1 -C 6  alkyl), —N(C 1 -C 6  alkyl) 2 , —SO 2 (C 1 -C 6  alkyl), —CO 2 H, —CO 2 (C 1 -C 6  alkyl), —C(O)NH 2 , —C(O)NH(C 1 -C 6  alkyl), —C(O)N(C 1 -C 6  alkyl) 2 , —N(C 1 -C 6  alkyl)C(O)(C 1 -C 6  alkyl), —NHC(O)(C 1 -C 6  alkyl), —NHSO 2 (C 1 -C 6  alkyl), —N(C 1 -C 6  alkyl)SO 2 (C 1 -C 6  alkyl), —SO 2 NH 2 , —SO 2 NH(C 1 -C 6  alkyl), —SO 2 N(C 1 -C 6  alkyl) 2 , —OC(O)NH 2 , —OC(O)NH(C 1 -C 6  alkyl), —OC(O)N(C 1 -C 6  alkyl) 2 , —NHC(O)NH(C 1 -C 6  alkyl), —NHC(O)N(C 1 -C 6  alkyl) 2 , —N(C 1 -C 6  alkyl)C(O)NH(C 1 -C 6  alkyl), —N(C 1 -C 6  alkyl)C(O)N(C 1 -C 6  alkyl) 2 , —NHC(O)NH(C 1 -C 6  alkyl), —NHC(O)N(C 1 -C 6  alkyl) 2 , —NHC(O)O(C 1 -C 6  alkyl), and —N(C 1 -C 6  alkyl)C(O)O(C 1 -C 6  alkyl); 
         R 25  and R 26  are optionally taken together with the attached N atom to form a 5-6 membered ring having additional 0-2 heteroatoms selected from O, S, and N, said ring being optionally substituted with one to four groups selected from halo, —CN, —OCF 3 , CF 3 , —NO 2 , —C 1 -C 6  alkyl, —OH, oxo, —SH, —O(C 1 -C 6  alkyl), —S(C 1 -C 6  alkyl), —NH 2 , —NH(C 1 -C 6  alkyl), —N(C 1 -C 6  alkyl) 2 , —SO 2 (C 1 -C 6  alkyl), —CO 2 H, —CO 2 (C 1 -C 6  alkyl), —C(O)NH 2 , —C(O)NH(C 1 -C 6  alkyl), —C(O)N(C 1 -C 6  alkyl) 2 , —N(C 1 -C 6  alkyl)C(O)(C 1 -C 6  alkyl), —NHC(O)(C 1 -C 6  alkyl), —NHSO 2 (C 1 -C 6  alkyl), —N(C 1 -C 6  alkyl)SO 2 (C 1 -C 6  alkyl), —SO 2 NH 2 , —SO 2 NH(C 1 -C 6  alkyl), —SO 2 N(C 1 -C 6  alkyl) 2 , —OC(O)NH 2 , —OC(O)NH(C 1 -C 6  alkyl), —OC(O)N(C 1 -C 6  alkyl) 2 , —NHC(O)NH(C 1 -C 6  alkyl), —NHC(O)N(C 1 -C 6  alkyl) 2 , —N(C 1 -C 6  alkyl)C(O)NH(C 1 -C 6  alkyl), —N(C 1 -C 6  alkyl)C(O)N(C 1 -C 6  alkyl) 2 , —NHC(O)NH(C 1 -C 6  alkyl), —NHC(O)N(C 1 -C 6  alkyl) 2 , —NHC(O)O(C 1 -C 6  alkyl), and —N(C 1 -C 6  alkyl)C(O)O(C 1 -C 6  alkyl); 
         Y′ is independently O, NR 22 , or S; 
         each R 22  is independently H or C 1 -C 5  alkyl; and 
         provided that (1) R 2 , R 3 , R 4 , R 5 , R 6 , and R 8  are not H at the same time; and (2) when X is CH, Y is CH, R 5  is H, Z is CR 8 , and R 3  is H or alkyl, then R 6  is not —C(═Y′)OR 11 . 
       
     
     
         2 . The compound of  claim 1  wherein the compound is of Formula (I-a): 
       
         
           
           
               
               
           
         
       
     
     
         3 . The compound of  claim 1  wherein the compound is of Formula (I-b): 
       
         
           
           
               
               
           
         
       
     
     
         4 . The compound of  claim 3  wherein R 3  is H, CH 3  or halo. 
     
     
         5 . The compound of  claim 4  wherein R 4  is —NR 11 R 12  or —OR 11 , wherein R 11  and R 12  are optionally taken together with the attached N atom to form a 4-7 membered ring having additional 0-2 heteroatoms selected from O, S, and N, said ring being optionally substituted with one to four R 13  groups. 
     
     
         6 . The compound of  claim 5  wherein R 4  is selected from one of the following groups: 
       
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
       
     
     
         7 . The compound of  claim 1  wherein R 5  is —NR 11 R 12  or —OR 11 , wherein R 11  and R 12  are optionally taken together with the attached N atom to form a 4-7 membered ring having additional 0-2 heteroatoms selected from O, S, and N, said ring being optionally substituted with one to four R 13  groups. 
     
     
         8 . The compound of  claim 7  wherein R 5  is selected from one of the following groups: 
       
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
       
     
     
         9 . The compound of  claim 1  wherein R 6  is H, CN or pyrrolyl optionally substituted with C 1 -C 3  alkyl. 
     
     
         10 . The compound of  claim 1  wherein R 6  is H, CN, N-methylpyrrolyl, or pyrrolyl. 
     
     
         11 . The compound of  claim 1  wherein R 6  is H or CN. 
     
     
         12 . The compound of  claim 1  wherein R 6  is CN. 
     
     
         13 . A compound selected from the group consisting of:
 4-(N-(morpholin-2-ylmethyl))-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   4-(azetidin-3-ylmethoxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   (R)-4-(morpholin-2-ylmethoxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   (S)-4-(morpholin-2-ylmethoxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   (R)-4-(quinuclidin-3-yloxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   4-((1s,3s)-cyclobutanamine-3-yloxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   (R)-4-((1-methylpiperazin-2-yl)methoxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   (S)-4-((1-methylpiperazin-2-yl)methoxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   (R)-4-((4-methylpiperazin-2-yl)methoxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   (S)-4-((4-methylpiperazin-2-yl)methoxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   (R)-4-((piperidin-2-one)-5-yloxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   4-((1-methylpiperidin-4-yl)methoxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   4-((1,3-dimethylpiperidin-3-yl)methoxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   4-(2-(pyrrolidin-1-ylmethyl)morpholino)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   (R)-4-(morpholin-3-ylmethoxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   4-(quinuclidin-3-ylmethoxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   trans-4-(4-fluoropiperidin-3-yloxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   4-((1R,3S,4S)-2-azabicyclo[2.2.1]heptan-3-ylmethoxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   (S)-4-(2-((dimethylamino)methyl)morpholino)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   (R)-4-(2-((dimethylamino)methyl)morpholino)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   (S)-4-(2-((methylamino)methyl)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   (R)-4-(2-((methylamino)methyl)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   4-((4-hydroxy-1-methylpiperidin-4-yl)methoxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   4-((4-fluoro-1-methylpiperidin-4-yl)methoxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   4-((4-methoxy-1-methylpiperidin-4-yl)methoxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   (R)-4-(3-(dimethylamino)piperidin-1-yl)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   (S)-4-(3-(dimethylamino)piperidin-1-yl)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   4-((1r,4r)-4-(dimethylamino)cyclohexyloxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   (R)-4-((1-methylpiperidin-3-yl)methoxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   (R)-4-(4-methylmorpholin-2-ylmethoxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   (R)-4-(1-ethylpyrrolidin-3-yloxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   (S)-4-((1-ethylpyrrolidin-2-yl)methoxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   (S)-4-(3-(ethylamino)piperidin-1-yl)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   (R)-4-(3-(ethylamino)piperidin-1-yl)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   (S)-4-(4-(2-(pyrrolidin-2-yl)acetyl)piperazin-1-yl)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   (R)-4-(4-(2-(pyrrolidin-2-yl)acetyl)piperazin-1-yl)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   cis-4-(4-fluoropiperidin-3-yloxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   3-Bromo-4-((1,4-dimethylpiperidin-4-yl)methoxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   3-Chloro-4-((1,4-dimethylpiperidin-4-yl)methoxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   1-[4-(3-Chloro-9H-dipyrido[2,3-b;4′,3′-d]pyrrol-4-yl)-piperazin-1-yl]-2-(R)-pyrrolidin-2-yl-ethanone   (S)-3-Chloro-4-(3-hydroxypyrrolidin-1-yl)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   3-Chloro-4-((3S,4S)-3,4-dihydroxypyrrolidin-1-yl)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   3-Chloro-4-((3R,4R)-3,4-dihydroxypyrrolidin-1-yl)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   3-Chloro-4-(3-hydroxyazetidin-1-yl)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   (S)-3-Chloro-4-(3-hydroxy-3-methylpyrrolidin-1-yl)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   (R)-3-Chloro-4-(3-hydroxy-3-methylpyrrolidin-1-yl)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   (S)-3-Chloro-4-(3-hydroxypiperidin-1-yl)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   (R)-3-Chloro-4-(3-hydroxypiperidin-1-yl)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   3-Chloro-4-(4-hydroxypiperidin-1-yl)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   (S)-3-Chloro-4-(3-aminopyrrolidin-1-yl)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   (S)-3-Chloro-4-(3-(methylamino)pyrrolidin-1-yl)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   (S)-3-Chloro-4-(3-(ethylamino)pyrrolidin-1-yl)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   (S)-3-Bromo-4-(3-(ethylamino)pyrrolidin-1-yl)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   (S)-3-Fluoro-4-(3-(ethylamino)pyrrolidin-1-yl)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   4-((3-methylpiperidin-3-yloxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   4-(3-(dimethylamino)-2,2-dimethylpropoxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   (S)-4-(piperidin-3-yloxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   4-((4-methylpiperidin-4-yl)methoxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   4-(1-(3-fluoropropyl)-4-methylpiperidin-4-yl)methoxy]-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   4-((1-(2-hydroxyethyl)-4-methylpiperidin-4-yl)methoxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   4-((1-(2-methoxyethyl)-4-methylpiperidin-4-yl)methoxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   4-((1-ethyl-4-methylpiperidin-4-yl)methoxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   (R)-4-(1-methylpiperidin-3-yloxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   4-((R)-1-ethylpiperidin-3-oxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   (R)-4-(1-(2-hydroxyethyl)piperidin-3-yloxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   (R)-4-(1-(2-methoxyethyl)piperidin-3-oxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   4-((4-ethyl-1-methylpiperidin-4-yl)methoxy)-9H-dipyrido[2,3-b; 4′,3′-d]pyrrole-6-carbonitrile;   4-((1,4-dimethylpiperidin-4-yl)methoxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   (R)-4-(piperidin-2-ylmethoxy)-9H-dipyrido[2,3-b; 4′,3′-d]pyrrole-6-carbonitrile;   (S)-4-(piperidin-2-ylmethoxy)-9H-dipyrido[2,3-b; 4′,3′-d]pyrrole-6-carbonitrile;   (R)-4-((1-ethylpiperidin-2-yl)methoxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   (R)-4-((1-methylpiperidin-2-yl)methoxy)-9H-dipyrido[2,3-b; 4′,3′-d]pyrrole-6-carbonitrile;   (S)-4-(N-(2-methoxyethyl)pyrrolidin-3-amino)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   (S)-4-(N-(3-fluoropropyl)pyrrolidin-3-amino)-9H-dipyrido[2,3-b; 4′,3′-d]pyrrole-6-carbonitrile;   (R)-4-(N-(2-methoxyethyl)pyrrolidin-3-amino)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   (S)-4-(N-ethylpyrrolidin-3-amino)-9H-dipyrido[2,3-b; 4′,3′-d]pyrrole-6-carbonitrile;   4-(4-(pyrrolidin-3-yl)morpholino)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   4-(2,5-diazabicyclo[2.2.1]heptan-2-yl)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   4-(N-methylpyrrolidin-3-amino)-9H-dipyrido[2,3-b; 4′,3′-d]pyrrole-6-carbonitrile;   (R)-4-(N,N-dimethylpyrrolidin-3-amino)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   (S)-4-(N,N-dimethylpyrrolidin-3-amino)-9H-dipyrido[2,3-b; 4′,3′-d]pyrrole-6-carbonitrile;   4-(octahydropyrrolo[3,4-b]pyrrol)-9H-dipyrido[2,3-b; 4′,3′-d]pyrrole-6-carbonitrile;   4-((3 aS,6 aS)-1-methyloctahydropyrrolo[3,4-b]pyrrol)-9H-dipyrido[2,3-b; 4′,3′-d]pyrrole-6-carbonitrile;   4-((R)-piperidin-3-amino)-9H-dipyrido[2,3-b; 4′,3′-d]pyrrole-6-carbonitrile;   3-chloro-4-piperazin-9H-dipyrido[2,3-b; 4′,3′-d]pyrrole-6-carbonitrile;   3-Chloro-4-(1-ethylpiperazin)-9H-dipyrido[2,3-b; 4′,3′-d]pyrrole-6-carbonitrile;   (S)-3-Chloro-4-(N-(3-fluoropropyl)pyrrolidin-3-amino)-9H-dipyrido[2,3-b; 4′,3′-d]pyrrole-6-carbonitrile;   (S)-3-Chloro-4-(3-(2,2-difluoro ethylamino)pyrrolidin-1-yl)-9H-dipyrido[2,3-b; 4′,3′-d]pyrrole-6-carbonitrile;   (S)-3-Chloro-4-(N-(pyrrolidin-3-yl)isobutyramide)-9H-dipyrido[2,3-b; 4′,3′-d]pyrrole-6-carbonitrile;   (S)-3-Chloro-4-(N-(2,2,2-trifluoroethyl)pyrrolidin-3-amino)-9H-dipyrido[2,3-b; 4′,3′-d]pyrrole-6-carbonitrile;   (R)-4-(Piperidin-3-yloxy)-6-(1-methyl-1H-pyrazol-4-yl)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole;   1-[4-(9H-Dipyrido[2,3b;4′,3′-d]pyrrol-4-yl)-piperazin-1-yl]-2-(R)-pyrrolidin-2-yl-ethanone;   [(S)-1-(9H-Dipyrido[2,3-b;4′,3′-d]pyrrol-4-yl)-pyrrolidin-3-yl]-ethyl-amine;   4-(1-Ethyl-piperidin-4-ylamino)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   4-[(S)-(1-Azabicyclo-[2.2.2]oct-3-yl)oxy]-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   4-((S)-1-Ethylpiperidin-3-ylamino)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   cis-3-Fluoro-piperidin-4-yloxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   4-(4-Ethylpiperazin-1-yl)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   4-(4-Pyrrolidin-1-ylpiperidin-1-yl)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   4-(4-Morpholin-4-yl-piperidin-1-yl)-9H-dipyrido[2,3b;4′,3′ d]pyrrole-6-carbonitrile;   4-((R)-1-Ethyl-piperidin-3-ylamino)-9H-dipyrido-[2,3b;4′,3′-d]pyrrole-6-carbonitrile;   4-(4-Methylaminopiperidin-1-yl)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   4-((R)-3-Hydroxypyrrolidin-1-yl)-9H-dipyrido[2,3b;4′,3′-d]pyrrole-6-carbonitrile;   4-((S)-3-Hydroxypyrrolidin-1-yl)-9H-dipyrido[2,3b;4′,3′-d]pyrrole-6-carbonitrile;   Trans-3-Fluoropiperidin-4-yloxy)-9H-dipyrido[2,3-b;4′,3′d]pyrrole-6-carbonitrile;   5-(Piperidin-4-ylmethoxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-(Pyrrolidin-3-ylmethoxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-((S)-Piperidin-3-yloxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-((R)-1-Pyrrolidin-2-ylmethoxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-[1-(3,3,3-Trifluoro-propyl)-piperidin-4-ylamino]-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-((S)-1-Ethyl-piperidin-3-yloxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6 carbonitrile;   5-[1-(2-Methoxy-ethyl)-piperidin-4-ylamino]-9Hdipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-(1-Cyclopropylmethyl-piperidin-4-yloxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-(Cis)-3-Fluoro-piperidin-4-yloxy)-9H-dipyrido[2,3b;4′,3′-d]pyrrole-6-carbonitrile;   5-((S)-1-Pyrrolidin-2-ylmethoxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-[(1-Ethyl-piperidin-4-ylmethyl)-amino]-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-[(1-Ethyl-piperidin-4-yl)-methyl-amino]-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-(1-Butyl-piperidin-4-yloxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-(1-Methyl-piperidin-4-yloxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-[1-(3,3,3-Trifluoro-propyl)-piperidin-4-ylamino]-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-[(S)-(1-Azabicyclo[2.2.2]oct-3-yl)amino]-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-(2-Pyrrolidin-1-yl-ethoxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-(trans)-3-Fluoro-piperidin-4-yloxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-[(4-Ethyl-morpholin-2-ylmethyl)-amino]-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-(4-Ethylamino-piperidin-1-yl)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-(1-Oxetan-3-yl-piperidin-4-ylamino)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-(1-Cyclopropylmethyl-piperidin-4-ylamino)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-[1,3′]Bipyrrolidinyl-1′-yl-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-[1-(3-Fluoro-propyl)-piperidin-4-yloxy]-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-[4-(3-Fluoro-azetidin-1-yl)-piperidin-1-yl]-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-[4-(3-Hydroxy-azetidin-1-yl)-piperidin-1-yl]-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-[4-((S)-3-Fluoro-pyrrolidin-1-yl)-piperidin-1-yl]-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-(4-Azetidin-1-yl-piperidin-1-yl)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-[4-((R)-3-Fluoropyrrolidin-1-yl)-piperidin-1-yl]-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6carbonitrile;   5-[4-((S)-3-Hydroxypyrrolidin-1-yl)-piperidin-1-yl]-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-[4-((R)-3-Hydroxy-pyrrolidin-1-yl)-piperidin-1-yl]-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-(4-Hydroxy-piperidin-1-yl)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-(4-Hydroxy-[1,4]bipiperidinyl-1′-yl)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-(4-Fluoro-[1,4′]bipiperidinyl-1′-yl)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-(4-Hydroxy-4-methyl-piperidin-1-yl)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-(1-Aza-bicyclo[2.2.2]oct-4-yloxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-(1,4-Dimethyl-piperidin-4-yloxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-(4-Hydroxy-4-methyl[1,4′]bipiperidinyl-1′-yl)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   3-Bromo-5-(piperidin-4-ylamino)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   3-Bromo-5-(piperidin-4-yloxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   3-Bromo-5-(1-oxetan-3-yl-piperidin-4-yloxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   3-Bromo-5-(1-ethyl-piperidin-4-ylamino)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-(1-Ethyl-piperidin-4-yloxy)-3-fluoro-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-[(S)-(1-Azabicyclo[2.2.2]oct-3-yl)oxy]-3-fluoro-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   3-Fluoro-5-(4-morpholin-4-yl-piperidin-1-yl)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   3-Chloro-5-(4-morpholin-4-yl-piperidin-1-yl)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   3-Fluoro-5-(piperidin-4-yloxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   3-Bromo-5-(4-morpholin-4-yl-piperidin-1-yl)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-[(S)-(1-Azabicyclo[2.2.2]oct-3-yl)oxy]-3-chloro-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   3-Chloro-5-(1-ethyl-piperidin-4-ylamino)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   3-Chloro-5-(4-pyrrolidin-1-yl-piperidin-1-yl)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-(1-Ethyl-piperidin-3-ylmethoxy)-9H-dipyrido[2,3-b;4′,3′ d]pyrrole-6-carbonitrile;   5-(1-Ethyl-piperidin-4-ylmethoxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-((S)-1-Ethyl-piperidin-3-ylmethoxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-(1-Methyl-azepan-4-yloxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-[1-(2-Hydroxy-2-methyl-propyl)-piperidin-4-yloxy]-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-(1-Ethyl-azetidin-3-yloxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   3-Fluoro-5-(1-methyl-piperidin-4-yloxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   3-Chloro-5-(1-methyl-piperidin-4-yloxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   3-Chloro-5-(1-ethyl-piperidin-4-yloxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-(1-Methyl-piperidin-4-ylamino)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-(4-Pyrrolidin-1-yl-piperidin-1-yl)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-(4-Morpholin-4-yl-piperidin-1-yl)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-(Piperidin-4-ylamino)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-piperazin-1-yl-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6 carbonitrile;   5-[1-(2,2-Difluoroethyl)-piperidin-4-yloxy]-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-[1-(2-Methanesulfonylethyl)-piperidin-4-yloxy]-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-[1-(2-Hydroxyethyl)-piperidin-4-yloxy]-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-(1-Ethyl-piperidin-4-yloxy)-3-methyl-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile; and   5-(1-Ethyl-piperidin-4-yloxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole.   
     
     
         14 . The compound of  claim 13 , where in said compound is selected from the group consisting of:
 4-(N-(morpholin-2-ylmethyl))-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   4-(azetidin-3-ylmethoxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   (R)-4-(morpholin-2-ylmethoxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   (S)-4-(morpholin-2-ylmethoxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   (R)-4-(quinuclidin-3-yloxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   4-((1s,3s)-cyclobutanamine-3-yloxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   (R)-4-((1-methylpiperazin-2-yl)methoxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   (S)-4-((1-methylpiperazin-2-yl)methoxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   (R)-4-((4-methylpiperazin-2-yl)methoxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   (S)-4-((4-methylpiperazin-2-yl)methoxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   (R)-4-((piperidin-2-one)-5-yloxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   4-((1-methylpiperidin-4-yl)methoxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   4-((1,3-dimethylpiperidin-3-yl)methoxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   4-(2-(pyrrolidin-1-ylmethyl)morpholino)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   (R)-4-(morpholin-3-ylmethoxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   4-(quinuclidin-3-ylmethoxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   trans-4-(4-fluoropiperidin-3-yloxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   4-((1R,3S,4S)-2-azabicyclo[2.2.1]heptan-3-ylmethoxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   (S)-4-(2-((dimethylamino)methyl)morpholino)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   (R)-4-(2-((dimethylamino)methyl)morpholino)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   (S)-4-(2-((methylamino)methyl)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   (R)-4-(2-((methylamino)methyl)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   4-((4-hydroxy-1-methylpiperidin-4-yl)methoxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   4-((4-fluoro-1-methylpiperidin-4-yl)methoxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   4-((4-methoxy-1-methylpiperidin-4-yl)methoxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   (R)-4-(3-(dimethylamino)piperidin-1-yl)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   (S)-4-(3-(dimethylamino)piperidin-1-yl)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   4-((1r,4r)-4-(dimethylamino)cyclohexyloxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   (R)-4-((1-methylpiperidin-3-yl)methoxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   (R)-4-(4-methylmorpholin-2-ylmethoxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   (R)-4-(1-ethylpyrrolidin-3-yloxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   (S)-4-((1-ethylpyrrolidin-2-yl)methoxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   (S)-4-(3-(ethylamino)piperidin-1-yl)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   (R)-4-(3-(ethylamino)piperidin-1-yl)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   (S)-4-(4-(2-(pyrrolidin-2-yl)acetyl)piperazin-1-yl)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   (R)-4-(4-(2-(pyrrolidin-2-yl)acetyl)piperazin-1-yl)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   cis-4-(4-fluoropiperidin-3-yloxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   3-Bromo-4-((1,4-dimethylpiperidin-4-yl)methoxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   3-Chloro-4-((1,4-dimethylpiperidin-4-yl)methoxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   1-[4-(3-Chloro-9H-dipyrido[2,3-b;4′,3′-d]pyrrol-4-yl)-piperazin-1-yl]-2-(R)-pyrrolidin-2-yl-ethanone   (S)-3-Chloro-4-(3-hydroxypyrrolidin-1-yl)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   3-Chloro-4-((3S,4S)-3,4-dihydroxypyrrolidin-1-yl)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   3-Chloro-4-((3R,4R)-3,4-dihydroxypyrrolidin-1-yl)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   3-Chloro-4-(3-hydroxyazetidin-1-yl)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   (S)-3-Chloro-4-(3-hydroxy-3-methylpyrrolidin-1-yl)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   (R)-3-Chloro-4-(3-hydroxy-3-methylpyrrolidin-1-yl)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   (S)-3-Chloro-4-(3-hydroxypiperidin-1-yl)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   (R)-3-Chloro-4-(3-hydroxypiperidin-1-yl)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   3-Chloro-4-(4-hydroxypiperidin-1-yl)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   (S)-3-Chloro-4-(3-aminopyrrolidin-1-yl)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   (S)-3-Chloro-4-(3-(methylamino)pyrrolidin-1-yl)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   (S)-3-Chloro-4-(3-(ethylamino)pyrrolidin-1-yl)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   (S)-3-Bromo-4-(3-(ethylamino)pyrrolidin-1-yl)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   (S)-3-Fluoro-4-(3-(ethylamino)pyrrolidin-1-yl)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   4-((3-methylpiperidin-3-yloxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   4-(3-(dimethylamino)-2,2-dimethylpropoxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   (S)-4-(piperidin-3-yloxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   4-((4-methylpiperidin-4-yl)methoxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   4-(1-(3-fluoropropyl)-4-methylpiperidin-4-yl)methoxy]-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   4-((1-(2-hydroxyethyl)-4-methylpiperidin-4-yl)methoxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-carbonitrile;   4-((1-(2-methoxyethyl)-4-methylpiperidin-4-yl)methoxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   4-((1-ethyl-4-methylpiperidin-4-yl)methoxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   (R)-4-(1-methylpiperidin-3-yloxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   4-((R)-1-ethylpiperidin-3-oxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   (R)-4-(1-(2-hydroxyethyl)piperidin-3-yloxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   (R)-4-(1-(2-methoxyethyl)piperidin-3-oxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   4-((4-ethyl-1-methylpiperidin-4-yl)methoxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   4-((1,4-dimethylpiperidin-4-yl)methoxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   (R)-4-(piperidin-2-ylmethoxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   (S)-4-(piperidin-2-ylmethoxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   (R)-4-((1-ethylpiperidin-2-yl)methoxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   (R)-4-((1-methylpiperidin-2-yl)methoxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   (S)-4-(N-(2-methoxyethyl)pyrrolidin-3-amino)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   (S)-4-(N-(3-fluoropropyl)pyrrolidin-3-amino)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   (R)-4-(N-(2-methoxyethyl)pyrrolidin-3-amino)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   (S)-4-(N-ethylpyrrolidin-3-amino)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   4-(4-(pyrrolidin-3-yl)morpholino)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   4-(2,5-diazabicyclo[2.2.1]heptan-2-yl)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   4-(N-methylpyrrolidin-3-amino)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   (R)-4-(N,N-dimethylpyrrolidin-3-amino)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   (S)-4-(N,N-dimethylpyrrolidin-3-amino)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   4-(octahydropyrrolo[3,4-b]pyrrol)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   4-((3aS,6aS)-1-methyloctahydropyrrolo[3,4-b]pyrrol)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   4-((R)-piperidin-3-amino)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   3-chloro-4-piperazin-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   3-Chloro-4-(1-ethylpiperazin)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   (S)-3-Chloro-4-(N-(3-fluoropropyl)pyrrolidin-3-amino)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   (S)-3-Chloro-4-(3-(2,2-difluoroethylamino)pyrrolidin-1-yl)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   (S)-3-Chloro-4-(N-(pyrrolidin-3-yl)isobutyramide)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   (S)-3-Chloro-4-(N-(2,2,2-trifluoroethyl)pyrrolidin-3-amino)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   (R)-4-(Piperidin-3-yloxy)-6-(1-methyl-1H-pyrazol-4-yl)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole;   1-[4-(9H-Dipyrido[2,3b;4′,3′-d]pyrrol-4-yl)-piperazin-1-yl]-2-(R)-pyrrolidin-2-yl-ethanone;   [(S)-1-(9H-Dipyrido[2,3-b;4′,3′-d]pyrrol-4-yl)-pyrrolidin-3-yl]-ethyl-amine;   4-(1-Ethyl-piperidin-4-ylamino)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   4-[(S)-(1-Azabicyclo-[2.2.2]oct-3-yl)oxy]-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   4-((S)-1-Ethylpiperidin-3-ylamino)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   cis-3-Fluoro-piperidin-4-yloxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   4-(4-Ethylpiperazin-1-yl)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   4-(4-Pyrrolidin-1-ylpiperidin-1-yl)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   4-(4-Morpholin-4-yl-piperidin-1-yl)-9H-dipyrido[2,3b;4′,3′ d]pyrrole-6-carbonitrile;   4-((R)-1-Ethyl-piperidin-3-ylamino)-9H-dipyrido-[2,3b;4′,3′-d]pyrrole-6-carbonitrile;   4-(4-Methylaminopiperidin-1-yl)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   4-((R)-3-Hydroxypyrrolidin-1-yl)-9H-dipyrido[2,3b;4′,3′-d]pyrrole-6-carbonitrile;   4-((S)-3-Hydroxypyrrolidin-1-yl)-9H-dipyrido[2,3b;4′,3′-d]pyrrole-6-carbonitrile; and   Trans-3-Fluoropiperidin-4-yloxy)-9H-dipyrido[2,3-b;4′,3′d]pyrrole-6-carbonitrile.   
     
     
         15 . The compound of  claim 13 , wherein said compound selected from the group consisting of:
 5-(Piperidin-4-ylmethoxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-(Pyrrolidin-3-ylmethoxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-((S)-Piperidin-3-yloxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-((R)-1-Pyrrolidin-2-ylmethoxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-[1-(3,3,3-Trifluoro-propyl)-piperidin-4-ylamino]-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-((S)-1-Ethyl-piperidin-3-yloxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6 carbonitrile;   5-[1-(2-Methoxy-ethyl)-piperidin-4-ylamino]-9Hdipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-(1-Cyclopropylmethyl-piperidin-4-yloxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-(Cis)-3-Fluoro-piperidin-4-yloxy)-9H-dipyrido[2,3b;4′,3′-d]pyrrole-6-carbonitrile;   5-((S)-1-Pyrrolidin-2-ylmethoxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-[(1-Ethyl-piperidin-4-ylmethyl)-amino]-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-[(1-Ethyl-piperidin-4-yl)-methyl-amino]-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-(1-Butyl-piperidin-4-yloxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-(1-Methyl-piperidin-4-yloxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-[1-(3,3,3-Trifluoro-propyl)-piperidin-4-ylamino]-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-[(S)-(1-Azabicyclo[2.2.2]oct-3-yl)amino]-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-(2-Pyrrolidin-1-yl-ethoxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-(trans)-3-Fluoro-piperidin-4-yloxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-[(4-Ethyl-morpholin-2-ylmethyl)-amino]-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-(4-Ethylamino-piperidin-1-yl)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-(1-Oxetan-3-yl-piperidin-4-ylamino)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-(1-Cyclopropylmethyl-piperidin-4-ylamino)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-[1,3′]Bipyrrolidinyl-1′-yl-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-[1-(3-Fluoro-propyl)-piperidin-4-yloxy]-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-[4-(3-Fluoro-azetidin-1-yl)-piperidin-1-yl]-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-[4-(3-Hydroxy-azetidin-1-yl)-piperidin-1-yl]-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-[4-((S)-3-Fluoro-pyrrolidin-1-yl)-piperidin-1-yl]-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-(4-Azetidin-1-yl-piperidin-1-yl)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-[4-((R)-3-Fluoropyrrolidin-1-yl)-piperidin-1-yl]-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6carbonitrile;   5-[4-((S)-3-Hydroxypyrrolidin-1-yl)-piperidin-1-yl]-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-[4-((R)-3-Hydroxy-pyrrolidin-1-yl)-piperidin-1-yl]-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-(4-Hydroxy-piperidin-1-yl)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-(4-Hydroxy-[1,4]bipiperidinyl-1′-yl)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-(4-Fluoro-[1,4′]bipiperidinyl-1′-yl)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-(4-Hydroxy-4-methyl-piperidin-1-yl)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-(1-Aza-bicyclo[2.2.2]oct-4-yloxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-(1,4-Dimethyl-piperidin-4-yloxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-(4-Hydroxy-4-methyl[1,4′]bipiperidinyl-1′-yl)-9H-dipyrido[2,3b;4′,3′-d]pyrrole-6-carbonitrile;   3-Bromo-5-(piperidin-4-ylamino)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   3-Bromo-5-(piperidin-4-yloxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   3-Bromo-5-(1-oxetan-3-yl-piperidin-4-yloxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   3-Bromo-5-(1-ethyl-piperidin-4-ylamino)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-(1-Ethyl-piperidin-4-yloxy)-3-fluoro-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-[(S)-(1-Azabicyclo[2.2.2]oct-3-yl)oxy]-3-fluoro-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   3-Fluoro-5-(4-morpholin-4-yl-piperidin-1-yl)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   3-Chloro-5-(4-morpholin-4-yl-piperidin-1-yl)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   3-Fluoro-5-(piperidin-4-yloxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   3-Bromo-5-(4-morpholin-4-yl-piperidin-1-yl)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-[(S)-(1-Azabicyclo[2.2.2]oct-3-yl)oxy]-3-chloro-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   3-Chloro-5-(1-ethyl-piperidin-4-ylamino)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   3-Chloro-5-(4-pyrrolidin-1-yl-piperidin-1-yl)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-(1-Ethyl-piperidin-3-ylmethoxy)-9H-dipyrido[2,3-b;4′,3′ d]pyrrole-6-carbonitrile;   5-(1-Ethyl-piperidin-4-ylmethoxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-((S)-1-Ethyl-piperidin-3-ylmethoxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-(1-Methyl-azepan-4-yloxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-[1-(2-Hydroxy-2-methyl-propyl)-piperidin-4-yloxy]-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-(1-Ethyl-azetidin-3-yloxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   3-Fluoro-5-(1-methyl-piperidin-4-yloxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   3-Chloro-5-(1-methyl-piperidin-4-yloxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   3-Chloro-5-(1-ethyl-piperidin-4-yloxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-(1-Methyl-piperidin-4-ylamino)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-(4-Pyrrolidin-1-yl-piperidin-1-yl)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-(4-Morpholin-4-yl-piperidin-1-yl)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-(Piperidin-4-ylamino)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-piperazin-1-yl-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6 carbonitrile;   5-[1-(2,2-Difluoroethyl)-piperidin-4-yloxy]-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-[1-(2-Methanesulfonylethyl)-piperidin-4-yloxy]-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-[1-(2-Hydroxyethyl)-piperidin-4-yloxy]-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-(1-Ethyl-piperidin-4-yloxy)-3-methyl-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile; and   5-(1-Ethyl-piperidin-4-yloxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole.   
     
     
         16 . The compound of  claim 13 , wherein said compound selected from the group consisting of:
 5-(Piperidin-4-ylmethoxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-(Pyrrolidin-3-ylmethoxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-((S)-Piperidin-3-yloxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-((R)-1-Pyrrolidin-2-ylmethoxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-((S)-1-Ethyl-piperidin-3-yloxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6 carbonitrile;   5-(1-Cyclopropylmethyl-piperidin-4-yloxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-(Cis)-3-Fluoro-piperidin-4-yloxy)-9H-dipyrido[2,3b;4′,3′-d]pyrrole-6-carbonitrile;   5-((S)-1-Pyrrolidin-2-ylmethoxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-(1-Butyl-piperidin-4-yloxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-(1-Methyl-piperidin-4-yloxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-(2-Pyrrolidin-1-yl-ethoxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-(trans)-3-Fluoro-piperidin-4-yloxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-[1-(3-Fluoro-propyl)-piperidin-4-yloxy]-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-(4-Hydroxy-4-methyl-piperidin-1-yl)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-(1-Aza-bicyclo[2.2.2]oct-4-yloxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-(1,4-Dimethyl-piperidin-4-yloxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   3-Bromo-5-(piperidin-4-yloxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   3-Bromo-5-(1-oxetan-3-yl-piperidin-4-yloxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-(1-Ethyl-piperidin-4-yloxy)-3-fluoro-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-[(S)-(1-Azabicyclo[2.2.2]oct-3-yl)oxy]-3-fluoro-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   3-Fluoro-5-(piperidin-4-yloxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-[(S)-(1-Azabicyclo[2.2.2]oct-3-yl)oxy]-3-chloro-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-(1-Ethyl-piperidin-3-ylmethoxy)-9H-dipyrido[2,3-b;4′,3′ d]pyrrole-6-carbonitrile;   5-(1-Ethyl-piperidin-4-ylmethoxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-((S)-1-Ethyl-piperidin-3-ylmethoxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-(1-Methyl-azepan-4-yloxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-[1-(2-Hydroxy-2-methyl-propyl)-piperidin-4-yloxy]-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-(1-Ethyl-azetidin-3-yloxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   3-Fluoro-5-(1-methyl-piperidin-4-yloxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   3-Chloro-5-(1-methyl-piperidin-4-yloxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   3-Chloro-5-(1-ethyl-piperidin-4-yloxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-[1-(2,2-Difluoroethyl)-piperidin-4-yloxy]-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-[1-(2-Methanesulfonylethyl)-piperidin-4-yloxy]-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-[1-(2-Hydroxyethyl)-piperidin-4-yloxy]-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-(1-Ethyl-piperidin-4-yloxy)-3-methyl-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile; and   5-(1-Ethyl-piperidin-4-yloxy)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole.   
     
     
         17 . The compound of  claim 13 , wherein said compound selected from the group consisting of:
 5-[1-(3,3,3-Trifluoro-propyl)-piperidin-4-ylamino]-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-[1-(2-Methoxy-ethyl)-piperidin-4-ylamino]-9Hdipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-[(1-Ethyl-piperidin-4-ylmethyl)-amino]-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-[(1-Ethyl-piperidin-4-yl)-methyl-amino]-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-[1-(3,3,3-Trifluoro-propyl)-piperidin-4-ylamino]-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-[(S)-(1-Azabicyclo[2.2.2]oct-3-yl)amino]-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-[(4-Ethyl-morpholin-2-ylmethyl)-amino]-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-(1-Oxetan-3-yl-piperidin-4-ylamino)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-(1-Cyclopropylmethyl-piperidin-4-ylamino)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   3-Bromo-5-(piperidin-4-ylamino)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   3-Bromo-5-(1-ethyl-piperidin-4-ylamino)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   3-Chloro-5-(1-ethyl-piperidin-4-ylamino)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-(1-Methyl-piperidin-4-ylamino)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile; and   5-(Piperidin-4-ylamino)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile.   
     
     
         18 . The compound of  claim 13 , wherein said compound selected from the group consisting of:
 5-[4-(3-Fluoro-azetidin-1-yl)-piperidin-1-yl]-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-[4-(3-Hydroxy-azetidin-1-yl)-piperidin-1-yl]-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-[4-((S)-3-Fluoro-pyrrolidin-1-yl)-piperidin-1-yl]-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-(4-Azetidin-1-yl-piperidin-1-yl)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-[4-((R)-3-Fluoropyrrolidin-1-yl)-piperidin-1-yl]-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-[4-((S)-3-Hydroxypyrrolidin-1-yl)-piperidin-1-yl]-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-[4-((R)-3-Hydroxy-pyrrolidin-1-yl)-piperidin-1-yl]-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-(4-Hydroxy-piperidin-1-yl)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-(4-Hydroxy-[1,4]bipiperidinyl-1′-yl)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-(4-Fluoro-[1,4′]bipiperidinyl-1′-yl)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-(4-Hydroxy-4-methyl-piperidin-1-yl)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-(4-Hydroxy-4-methyl[1,4′]bipiperidinyl-1′-yl)-9H-dipyrido[2,3b;4′,3′-d]pyrrole-6-carbonitrile;   3-Fluoro-5-(4-morpholin-4-yl-piperidin-1-yl)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   3-Chloro-5-(4-morpholin-4-yl-piperidin-1-yl)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   3-Bromo-5-(4-morpholin-4-yl-piperidin-1-yl)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   3-Chloro-5-(4-pyrrolidin-1-yl-piperidin-1-yl)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-(4-Pyrrolidin-1-yl-piperidin-1-yl)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile;   5-(4-Morpholin-4-yl-piperidin-1-yl)-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carbonitrile; and   5-piperazin-1-yl-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6 carbonitrile.   
     
     
         19 . A pharmaceutical composition comprising a compound of  claim 1  and a pharmaceutically acceptable carrier. 
     
     
         20 . The pharmaceutical composition of  claim 19 , further comprising a second chemotherapeutic agent. 
     
     
         21 . The pharmaceutical composition of  claim 20 , wherein said second chemotherapeutic agent is a DNA damaging agent. 
     
     
         22 . A method of inhibiting abnormal cell growth or treating a hyperproliferative disorder in a mammal comprising administering to said mammal a therapeutically effective amount of a pharmaceutical composition of  claim 19 . 
     
     
         23 . The method of treating cancer in a mammal comprising administering to said mammal a therapeutically effective amount of a pharmaceutical composition of  claim 19 . 
     
     
         24 . The method of  claim 23 , wherein cancer is selected from breast cancer, colorectal cancer, ovarian cancer, non-small cell lung cancer, malignant brain tumors, sarcomas, melanoma, lymphoma, myelomas and leukemia.

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