Triazolopyridines and triazolopyrazines as lsd1 inhibitors

Abstract

The present invention is directed to [1,2,4]triazolo[1,5-a]pyridine and [1,2,4]triazolo[1,5-a]pyrazine derivatives which are LSD1 inhibitors useful in the treatment of diseases such as cancer.

1 - 45 . (canceled) 
     
     
         46 . A method of treating a disease, wherein said disease is selected from leukemia, lung cancer, Ewing's sarcoma, prostate cancer, and myelofibrosis, comprising administering to a patient a therapeutically effective amount of a compound of Formula I: 
       
         
           
           
               
               
           
         
         or a pharmaceutically acceptable salt thereof, wherein:
 X is N or CR X ; 
 Ring A is C 6-10  aryl or 5-10 membered heteroaryl comprising carbon and 1, 2, 3, or 4 heteroatoms selected from N, O, and S, wherein said C 6-10  aryl and 5-10 membered heteroaryl are each optionally substituted by 1, 2, 3, or 4 substituents independently selected from R A ; 
 Ring B is C 6-10  aryl; 5-10 membered heteroaryl comprising carbon and 1, 2, 3 or 4 heteroatoms selected from N, O, and S; C 3-10  cycloalkyl; or 4-10 membered heterocycloalkyl comprising carbon and 1, 2, 3 or 4 heteroatoms selected from N, O, and S; wherein said C 6-10  aryl, 5-10 membered heteroaryl, C 3-10  cycloalkyl, and 4-10 membered heterocycloalkyl are each optionally substituted by 1, 2, 3, or 4 substituents independently selected from R B ; 
 R 1  is halo, C 1-6  alkyl, C 2-6  alkenyl, C 2-6  alkynyl, C 1-6  haloalkyl, Cy 1 , CN, OR a1 , SR a1 , C(O)R b1 , C(O)NR c1 R d1 , C(O)OR a1 , OC(O)R b1 , OC(O)NR c1 R d1 , NR c1 R d1 , NR c1 C(O)R b1 , NR c1 C(O)OR a1 , NR c1 C(O)NR c1 R d1 , C(═NR e1 )R b1 , C(═NR e1 )R c1 R d1 , NR c1 C(═NR e1 )NR c1 R d1 , NR c1 S(O)R b1 , NR c1 S(O) 2 R b1 , NR c1 S(O) 2 NR c1 R d1 , S(O)R b1 , S(O)NR c1 R d1 , S(O) 2 R b1 , or S(O) 2 NR c1 R d1 ; wherein said C 1-6  alkyl, C 2-6  alkenyl, and C 2-6  alkynyl are each optionally substituted with 1, 2, or 3 substituents independently selected from Cy 1 , halo, CN, OR a1 , SR a1 , C(O)R b1 , C(O)NR c1 R d1 , C(O)OR a1 , OC(O)R b1 , OC(O)NR c1 R d1 , NR c1 R d1 , NR c1 C(O)R b1 , NR c1 C(O)OR a1 , NR c1 C(O)NR c1 R d1 , C(═NR e1 )R b1 , C(═NR e1 )NR c1 R d1 , NR c1 C(═NR e1 )NR c1 R d1 , NR c1 S(O)R b1 , NR c1 S(O) 2 R b1 , NR c1 S(O) 2 NR c1 R d1 , S(O)R b1 , S(O)NR c1 R d1 , S(O) 2 R b1 , and S(O) 2 NR c1 R d1 ; 
 wherein when X is CR X , then R 1  is not CN; 
 R 2  is H, halo, C 1-6  alkyl, C 2-6  alkenyl, C 2-6  alkynyl, C 1-6  haloalkyl, Cy 2 , CN, OR a2 , SR a2 , C(O)R b2 , C(O)NR c2 R d2 , C(O)OR a2 , OC(O)R b2 , OC(O)NR c2 R d2 , NR c2 R d2  NR c2 C(O)R b2 , NR c2 C(O)OR a2  NR c2 C(O)NR c2 R d2 , C(═NR e2 )R b2 , C(═NR e2 )NR c2 R d2 , NR c2 C(═NR e2 )NR c2 R d2 , NR c2 S(O)R b2 , NR c2 S(O) 2 R b2 , NR c2 S(O) 2 NR c2 R d2 , S(O)R b2 , S(O)NR c2 R d2 , S(O) 2 R b2 , or S(O) 2 NR c2 R d2 ; wherein said C 1-6  alkyl, C 2-6  alkenyl, and C 2-6  alkynyl are each optionally substituted with 1, 2, or 3 substituents independently selected from Cy 2 , halo, CN, OR a2 , SR a2 , C(O)R b2 , C(O)NR c2 R d2 , C(O)OR a2 , OC(O)R b2 , OC(O)NR c2 R d2 , NR c2 R d2 , NR c2 C(O)R b2 , NR c2 C(O)OR a2 , NR c2 C(O)NR c2 R d2 , C(═NR e2 )R b2 , C(═NR e2 )NR c2 R d2 , NR c2 C(═NR e2 )NR c2 R d2 , NR c2 S(O)R b2 , NR c2 S(O) 2 R b2 , NR c2 S(O) 2 NR c2 R d2 , S(O)R b2 , S(O)NR c2 R d2 , S(O) 2 R b2 , and S(O) 2 NR c2 R d2 ; 
 each R A  is independently selected from halo, C 1-6  alkyl, C 2-6  alkenyl, C 2-6  alkynyl, C 1-6  haloalkyl, CN, NO 2 , OR a4 , SR a4 , C(O)R b4 , C(O)NR c4 R d4 , C(O)OR a4 , OC(O)R b4 , OC(O)NR c4 R d4 , NR c4 R d4 , NR c4 C(O)R b4 , NR c4 C(O)OR a4 , NR c4 C(O)NR c4 R d4 , C(═NR e4 )R b4 , C(═NR e4 )NR c4 R d4 , NR c4 C(═NR e4 )NR c4 R d4 , NR c4 S(O)R b4 , NR c4 S(O) 2 R b4 , NR c4 S(O) 2 NR c4 R d4 , S(O)R b4 , S(O)NR c4 R d4 , S(O) 2 R b4 , and S(O) 2 NR c4 R d4 , wherein said C 1-6  alkyl, C 2-6  alkenyl, and C 2-6  alkynyl are each optionally substituted by 1, 2, or 3, substituents independently selected from halo, C 1-6  haloalkyl, CN, NO 2 , OR a4 , SR a4 , C(O)R b4 , C(O)NR c4 R d4 , C(O)OR a4 , OC(O)R b4 , OC(O)NR c4 R d4 , NR c4 R d4 , NR c4 C(O)R b4 , NR c4 C(O)OR a4 , NR c4 C(O)NR c4 R d4 , C(═NR e4 )R b4 , C(═NR e4 )NR c4 R d4 , NR c4 C(═NR e4 )NR c4 R d4 , NR c4 S(O)R b4 , NR c4 S(O) 2 R b4 , NR c4 S(O) 2 NR c4 R d4 , S(O)R b4 , S(O)NR c4 R d4 , S(O) 2 R b4 , and S(O) 2 NR c4 R d4 ; 
 each R B  is independently selected from Cy 3 , halo, C 1-6  alkyl, C 2-6  alkenyl, C 2-6  alkynyl, C 1-6  haloalkyl, CN, NO 2 , OR a5 , SR a5 , C(O)R b5 , C(O)NR c5 R d5 , C(O)OR a5 , OC(O)R b5 , OC(O)NR c5 R d5 , NR c5 R d5  NR c5 C(O)R b5 , NR c5 C(O)OR a5 , NR c5 C(O)NR c5 R d5 , C(═NR e5 )R b5 , C(═NR e5 )NR c5 R d5 , NR c5 C(═NR e5 )NR c5 R d5 , NR c5 S(O)R b5 , NR c5 S(O) 2 R b5 , NR c5 S(O) 2 NR c5 R d5 , S(O)R b5 , S(O)NR c5 R d5 , S(O) 2 R b5 , and S(O) 2 NR c5 R d5 , wherein said C 1-6  alkyl, C 2-6  alkenyl, and C 2-6  alkynyl are each optionally substituted by 1, 2, or 3 substituents independently selected from Cy 3 , halo, C 1-6  haloalkyl, CN, NO 2 , OR a5 , SR a5 , C(O)R b5 , C(O)NR c5 R d5 , C(O)OR a5 , OC(O)R b5 , OC(O)NR c5 R d5 , NR c5 R d5 , NR c5 C(O)R b5 , NR c5 C(O)OR a5 , NR c5 C(O)NR c5 R d5 , C(═NR e5 )R b5 , C(═NR e5 )NR c5 R d5 , NR c5 C(═NR e5 )NR c5 R d5 , NR c5 S(O)R b5 , NR c5 S(O) 2 R b5 , NR c5 S(O) 2 NR c5 R d5 , S(O)R b5 , S(O)NR c5 R d5 , S(O) 2 R b5 , and S(O) 2 NR c5 R d5 ; 
 R X  is independently selected from H, halo, C 1-6  alkyl, C 2-6  alkenyl, C 2-6  alkynyl, C 1-6  haloalkyl, CN, OR a7 , SR a7 , C(O)R b7 , C(O)NR c7 R d7 , C(O)OR a7 , OC(O)R b7 , OC(O)NR c7 R d7 , NR c7 R d7 , NR c7 C(O)R b7 , NR c7 C(O)OR a7 , NR c7 C(O)NR c7 R d7 , C(═NR e7 )R b7 , C(═NR e7 )NR c7 R d7 , NR c7 C(═NR e7 )NR c7 R d7 , NR c7 S(O)R b7 , NR c7 S(O) 2 R b7 , NR c7 S(O) 2 NR c7 R d7 , S(O)R b7 , S(O)NR c7 R d7 , S(O) 2 R b7 , and S(O) 2 NR c7 R d7 ; 
 each Cy 1 , Cy 2 , Cy 3 , and Cy 4  is independently selected from C 6-10  aryl, C 3-10  cycloalkyl, 5-10 membered heteroaryl, and 4-10 membered heterocycloalkyl, each of which is optionally substituted with 1, 2, 3, or 4 substituents independently selected from R Cy ; 
 each R Cy  is independently selected from halo, C 1-4  alkyl, C 1-4  haloalkyl, C 1-4  cyanoalkyl, C 2-6  alkenyl, C 2-6  alkynyl, phenyl, C 3-7  cycloalkyl, 5-6 membered heteroaryl, 4-7 membered heterocycloalkyl, phenyl-C 1-4  alkyl-, C 3-7  cycloalkyl-C 1-4  alkyl-, (5-6 membered heteroaryl)-C 1-4  alkyl-, and (4-7 membered heterocycloalkyl)-C 1-4  alkyl-, CN, NO 2 , OR a6 , SR a6 , C(O)R b6 , C(O)NR c6 R d6 , C(O)OR a6 , OC(O)R b6 , OC(O)NR c6 R d6 , C(═NR e6 )NR c6 R d6 , NR c6 C(═NR e6 )NR c6 R d6 , NR c6 R d6 , NR c6 C(O)R b6  NR c6 C(O)OR a6 , NR c6 C(O)NR c6 R d6 , NR c6 S(O)R b6 , NR c6 S(O) 2 R b6 , NR c6 S(O) 2 NR c6 R d6 , S(O)R b6 , S(O)NR c6 R d6 , S(O) 2 R b6 , and S(O) 2 NR c6 R d6 , wherein said C 1-4  alkyl, C 2-6  alkenyl, C 2-6  alkynyl, phenyl, C 3-7  cycloalkyl, 5-6 membered heteroaryl, 4-7 membered heterocycloalkyl, phenyl-C 1-4  alkyl-, C 3-7  cycloalkyl-C 1-4  alkyl-, (5-6 membered heteroaryl)-C 1-4  alkyl-, and (4-7 membered heterocycloalkyl)-C 1-4  alkyl- are each optionally substituted by 1, 2, or 3 substituents independently selected from C 1-4  alkyl, C 1-4  haloalkyl, C 1-4  cyanoalkyl, halo, CN, NO 2 , OR a6 , SR a6 , C(O)R b6 , C(O)NR c6 R d6 , C(O)OR a6 , OC(O)R b6 , OC(O)NR c6 R d6 , C(═NR e6 )NR c6 R d6 , NR c6 C(═NR e6 )NR c6 R d6 , NR c6 R d6 , NR c6 C(O)R b6 , NR c6 C(O)OR a6 , NR c6 C(O)NR c6 R d6 , NR c6 S(O)R b6 , NR c6 S(O) 2 R b6 , NR c6 S(O) 2 NR c6 R d6 , S(O)R b6 , S(O)NR c6 R d6 , S(O) 2 R b6 , and S(O) 2 NR c6 R d6 ; 
 each R a1  is independently selected from H, C 1-6  alkyl, C 2-6  alkenyl, C 2-6  alkynyl, and Cy 4 ; wherein said C 1-6  alkyl, C 2-6  alkenyl, and C 2-6  alkynyl are each optionally substituted with 1, 2, or 3 substituents independently selected from Cy 4 , halo, CN, OR a3 , SR a3 , C(O)R b3 , C(O)NR c3 R d3 , C(O)OR a3 , OC(O)R b3 , OC(O)NR c3 R d3 , NR c3 R d3 , NR c3 C(O)R b3  NR c3 C(O)OR a3 , NR c3 C(O)NR c3 R d3 , C(═NR e3 )R b3 , C(═NR e3 )NR c3 R d3 , NR c3 C(═NR e3 )NR c3 R d3 , NR c3 S(O)R b3 , NR c3 S(O) 2 R b3 , NR c3 S(O) 2 NR c3 R d3 , S(O)R b3 , S(O)NR c3 R d3 , S(O) 2 R b3 , and S(O) 2 NR c3 R d3 ; 
 each R b1 , R c1 , and R d1  is independently selected from H, C 1-6  alkyl, C 1-4  haloalkyl, C 2-6  alkenyl, C 2-6  alkynyl, C 6-10  aryl, C 3-10  cycloalkyl, 5-10 membered heteroaryl, 4-10 membered heterocycloalkyl, C 6-10  aryl-C 1-4  alkyl-, C 3-10  cycloalkyl-C 1-4  alkyl-, (5-10 membered heteroaryl)-C 1-4  alkyl-, and (4-10 membered heterocycloalkyl)-C 1-4  alkyl-, wherein said C 1-6  alkyl, C 2-6  alkenyl, C 2-6  alkynyl, C 6-10  aryl, C 3-10  cycloalkyl, 5-10 membered heteroaryl, 4-10 membered heterocycloalkyl, C 6-10  aryl-C 1-4  alkyl-, C 3-10  cycloalkyl-C 1-4  alkyl-, (5-10 membered heteroaryl)-C 1-4  alkyl-, and (4-10 membered heterocycloalkyl)-C 1-4  alkyl- are each optionally substituted with 1, 2, 3, 4, or 5 substituents independently selected from C 1-4  alkyl, C 1-4  haloalkyl, C 1-4  cyanoalkyl, halo, CN, OR a7 , SR a7 , C(O)R b7 , C(O)NR c7 R d7 , C(O)OR a7 , OC(O)R b7 , OC(O)NR c7 R d7 , NR c7 R d7 , NR c7 C(O)R b7  NR c7 C(O)NR c7 R d7 , NR c7 C(O)OR a7 , C(═NR e7 )NR c7 R d7 , NR c7 C(═NR e7 )NR c7 R d7 , S(O)R b7 , S(O)NR c7 R d7 , S(O) 2 R b7 , NR c7 S(O) 2 R b7 , NR c7 S(O) 2 NR c7 R d7 , and S(O) 2 NR c7 R d7 ; 
 or any R c1  and R d1  together with the N atom to which they are attached form a 4-, 5-, 6-, or 7-membered heterocycloalkyl group optionally substituted with 1, 2, or 3 substituents independently selected from C 1-6  alkyl, C 3-7  cycloalkyl, 4-7 membered heterocycloalkyl, C 6-10  aryl, 5-6 membered heteroaryl, C 1-6  haloalkyl, halo, CN, OR a7 , SR a7 , C(O)R b7 , C(O)NR c7 R d7 , C(O)OR a7 , OC(O)R b7 , OC(O)NR c7 R d7 , NR c7 R d7 , NR c7 C(O)R b7 , NR c7 C(O)NR c7 R d7 , NR c7 C(O)OR a7 , C(═NR e7 )NR c7 R d7 , NR c7 C(═NR e7 )NR c7 R d7 , S(O)R b7 , S(O)NR c7 R d7 , S(O) 2 R b7 , NR c7 S(O) 2 R b7 , NR c7 S(O) 2 NR c7 R d7 , and S(O) 2 NR c7 R d7 , wherein said C 1-6  alkyl, C 3-7  cycloalkyl, 4-7 membered heterocycloalkyl, C 6-10  aryl, and 5-6 membered heteroaryl are each optionally substituted by 1, 2, or 3 substituents independently selected from halo, C 1-4  alkyl, C 1-4  haloalkyl, C 1-4  cyanoalkyl, CN, OR a7 , SR a7 , C(O)R b7 , C(O)NR c7 R d7 , C(O)OR a7 , OC(O)R b7 , OC(O)NR c7 R d7 , NR c7 R d7 , NR c7 C(O)R b7 , NR c7 C(O)NR c7 R d7 , NR c7 C(O)OR a7 , C(═NR e7 )NR c7 R d7 , NR c7 C(═NR e7 )NR c7 R d7 , S(O)R b7 , S(O)NR c7 R d7 , S(O) 2 R b7 , NR c7 S(O) 2 R b7 , NR c7 S(O) 2 NR c7 R d7 , and S(O) 2 NR c7 R d7 ; 
 each R a2 , R b2 , R c2 , and R d2  is independently selected from H, C 1-6  alkyl, C 1-4  haloalkyl, C 2-6  alkenyl, C 2-6  alkynyl, C 6-10  aryl, C 3-10  cycloalkyl, 5-10 membered heteroaryl, 4-10 membered heterocycloalkyl, C 6-10  aryl-C 1-4  alkyl-, C 3-10  cycloalkyl-C 1-4  alkyl-, (5-10 membered heteroaryl)-C 1-4  alkyl-, and (4-10 membered heterocycloalkyl)-C 1-4  alkyl-, wherein said C 1-6  alkyl, C 2-6  alkenyl, C 2-6  alkynyl, C 6-10  aryl, C 3-10  cycloalkyl, 5-10 membered heteroaryl, 4-10 membered heterocycloalkyl, C 6-10  aryl-C 1-4  alkyl-, C 3-10  cycloalkyl-C 1-4  alkyl-, (5-10 membered heteroaryl)-C 1-4  alkyl-, and (4-10 membered heterocycloalkyl)-C 1-4  alkyl- are each optionally substituted with 1, 2, 3, 4, or 5 substituents independently selected from C 1-4  alkyl, C 1-4  haloalkyl, C 1-4  cyanoalkyl, halo, CN, OR a7 , SR a7 , C(O)R b7 , C(O)NR c7 R d7 , C(O)OR a7 , OC(O)R b7 , OC(O)NR c7 R d7 , NR c7 R d7 , NR c7 C(O)R b7 , NR c7 C(O)NR c7 R d7 , NR c7 C(O)OR a7 , C(═NR e7 )NR c7 R d7 , NR c7 C(═NR e7 )NR c7 R d7 , S(O)R b7 , S(O)NR c7 R d7 , S(O) 2 R b7 , NR c7 S(O) 2 R b7 , NR c7 S(O) 2 NR c7 R d7 , and S(O) 2 NR c7 R d7 ; 
 or any R c2  and R d2  together with the N atom to which they are attached form a 4-, 5-, 6-, or 7-membered heterocycloalkyl group optionally substituted with 1, 2, or 3 substituents independently selected from C 1-6  alkyl, C 3-7  cycloalkyl, 4-7 membered heterocycloalkyl, phenyl, 5-6 membered heteroaryl, C 1-6  haloalkyl, halo, CN, OR a7 , SR a7 , C(O)R b7 , C(O)NR c7 R d7 , C(O)OR a7 , OC(O)R b7 , OC(O)NR c7 R d7 , NR c7 R d7 , NR c7 C(O)R b7 , NR c7 C(O)NR c7 R d7 , NR c7 C(O)OR a7 , C(═NR e7 )NR c7 R d7 , NR c7 C(═NR e7 )NR c7 R d7 , S(O)R b7 , S(O)NR c7 R d7 , S(O) 2 R b7 , NR c7 S(O) 2 R b7 , NR c7 S(O) 2 NR c7 R d7 , and S(O) 2 NR c7 R d7 , wherein said C 1-6  alkyl, C 3-7  cycloalkyl, 4-7 membered heterocycloalkyl, phenyl, and 5-6 membered heteroaryl are each optionally substituted by 1, 2, or 3 substituents independently selected from halo, C 1-4  alkyl, C 1-4  haloalkyl, C 1-4  cyanoalkyl, CN, OR a7 , SR a7 , C(O)R b7 , C(O)NR c7 R d7 , C(O)OR a7 , OC(O)R b7 , OC(O)NR c7 R d7 , NR c7 R d7  NR c7 C(O)R b7 , NR c7 C(O)NR c7 R d7 , NR c7 C(O)OR a7 , C(═NR e7 )NR c7 R d7 , NR c7 C(═NR e7 )NR c7 R d7 , S(O)R b7 , S(O)NR c7 R d7 , S(O) 2 R b7 , NR c7 S(O) 2 R b7 , NR c7 S(O) 2 NR c7 R d7 , and S(O) 2 NR c7 R d7 ; 
 each R a3 , R b3 , R c3 , and R d3  is independently selected from H, C 1-6  alkyl, C 1-4  haloalkyl, C 2-6  alkenyl, C 2-6  alkynyl, C 6-10  aryl, C 3-10  cycloalkyl, 5-10 membered heteroaryl, 4-10 membered heterocycloalkyl, C 6-10  aryl-C 1-4  alkyl-, C 3-10  cycloalkyl-C 1-4  alkyl-, (5-10 membered heteroaryl)-C 1-4  alkyl-, and (4-10 membered heterocycloalkyl)-C 1-4  alkyl-, wherein said C 1-6  alkyl, C 2-6  alkenyl, C 2-6  alkynyl, C 6-10  aryl, C 3-10  cycloalkyl, 5-10 membered heteroaryl, 4-10 membered heterocycloalkyl, C 6-10  aryl-C 1-4  alkyl-, C 3-10  cycloalkyl-C 1-4  alkyl-, (5-10 membered heteroaryl)-C 1-4  alkyl-, and (4-10 membered heterocycloalkyl)-C 1-4  alkyl- are each optionally substituted with 1, 2, 3, 4, or 5 substituents independently selected from C 1-4  alkyl, C 1-4  haloalkyl, C 1-4  cyanoalkyl, halo, CN, OR a7 , SR a7 , C(O)R b7 , C(O)NR c7 R d7 , C(O)OR a7 , OC(O)R b7 , OC(O)NR c7 R d7 , NR c7 R d7 , NR c7 C(O)R b7 , NR c7 C(O)NR c7 R d7 , NR c7 C(O)OR a7 , C(═NR e7 )NR c7 R d7 , NR c7 C(═NR e7 )NR c7 R d7 , S(O)R b7 , S(O)NR c7 R d7 , S(O) 2 R b7 , NR c7 S(O) 2 R b7 , NR c7 S(O) 2 NR c7 R d7  and S(O) 2 NR c7 R d7 ; 
 or any R c3  and R d3  together with the N atom to which they are attached form a 4-, 5-, 6-, or 7-membered heterocycloalkyl group optionally substituted with 1, 2, or 3 substituents independently selected from C 1-6  alkyl, C 3-7  cycloalkyl, 4-7 membered heterocycloalkyl, phenyl, 5-6 membered heteroaryl, C 1-6  haloalkyl, halo, CN, OR a7 , SR a7 , C(O)R b7 , C(O)NR c7 R d7 , C(O)OR a7 , OC(O)R b7 , OC(O)NR c7 R d7 , NR c7 R d7 , NR c7 C(O)R b7  NR c7 C(O)NR c7 R d7 , NR c7 C(O)OR a7 , C(═NR e7 )NR c7 R d7 , NR c7 C(═NR e7 )NR c7 R d7 , S(O)R b7 , S(O)NR c7 R d7 , S(O) 2 R b7 , NR c7 S(O) 2 R b7 , NR c7 S(O) 2 NR c7 R d7 , and S(O) 2 NR c7 R d7 , wherein said C 1-6  alkyl, C 3-7  cycloalkyl, 4-7 membered heterocycloalkyl, phenyl, and 5-6 membered heteroaryl are each optionally substituted by 1, 2, or 3 substituents independently selected from halo, C 1-4  alkyl, C 1-4  haloalkyl, C 1-4  cyanoalkyl, CN, OR a7 , SR a7 , C(O)R b7 , C(O)NR c7 R d7 , C(O)OR a7 , OC(O)R b7 , OC(O)NR c7 R d7 , NR c7 R c7 , NR c7 C(O)R b7 , NR c7 C(O)NR c7 R d7 , NR c7 C(O)OR a7 , C(═NR e7 )NR c7 R d7 , NR c7 C(═NR e7 )NR c7 R d7 , S(O)R b7 , S(O)NR c7 R d7 , S(O) 2 R b7 , NR c7 S(O) 2 R b7 , NR c7 S(O) 2 NR c7 R d7 , and S(O) 2 NR c7 R d7 ; 
 each R a4 , R b4 , R c4 , and R d4  is independently selected from H, C 1-6  alkyl, C 1-4  haloalkyl, C 2-6  alkenyl, and C 2-6  alkynyl, wherein said C 1-6  alkyl, C 2-6  alkenyl, and C 2-6  alkynyl are each optionally substituted with 1, 2, 3, 4, or 5 substituents independently selected from C 1-4  alkyl, C 1-4  haloalkyl, C 1-4  cyanoalkyl, halo, CN, OR a7 , SR a7 , C(O)R b7 , C(O)NR c7 R d7 , C(O)OR a7 , OC(O)R b7 , OC(O)NR c7 R d7 , NR c7 R d7 , NR c7 C(O)R b7 , NR c7 C(O)NR c7 R d7 , NR c7 C(O)OR a7 , C(═NR e7 )NR c7 R d7 , NR c7 C(═NR e7 )NR c7 R d7 , S(O)R b7 , S(O)NR c7 R d7 , S(O) 2 R b7 , NR c7 S(O) 2 R b7 , NR c7 S(O) 2 NR c7 R d7 , and S(O) 2 NR c7 R d7 ; 
 or any R c4  and R d4  together with the N atom to which they are attached form a 4-, 5-, 6-, or 7-membered heterocycloalkyl group optionally substituted with 1, 2, or 3 substituents independently selected from C 1-6  alkyl, C 1-6  haloalkyl, halo, CN, OR a7 , SR a7 , C(O)R b7 , C(O)NR c7 R d7 , C(O)OR a7 , OC(O)R b7 , OC(O)NR c7 R d7 , NR c7 R d7 , NR c7 C(O)R b7 , NR c7 C(O)NR c7 R d7 , NR c7 C(O)OR a7 , C(═NR e7 )NR c7 R d7 , NR c7 C(═NR e7 )NR c7 R d7 , S(O)R b7 , S(O)NR c7 R d7 , S(O) 2 R b7 , NR c7 S(O) 2 R b7 , NR c7 S(O) 2 NR c7 R d7 , and S(O) 2 NR c7 R d7 ; 
 each R a5 , R b5 , R c5 , and R d5  is independently selected from H, C 1-6  alkyl, C 1-4  haloalkyl, C 2-6  alkenyl, C 2-6  alkynyl, C 6-10  aryl, C 3-10  cycloalkyl, 5-10 membered heteroaryl, 4-10 membered heterocycloalkyl, C 6-10  aryl-C 1-4  alkyl-, C 3-10  cycloalkyl-C 1-4  alkyl-, (5-10 membered heteroaryl)-C 1-4  alkyl-, and (4-10 membered heterocycloalkyl)-C 1-4  alkyl-, wherein said C 1-6  alkyl, C 2-6  alkenyl, C 2-6  alkynyl, C 6-10  aryl, C 3-10  cycloalkyl, 5-10 membered heteroaryl, 4-10 membered heterocycloalkyl, C 6-10  aryl-C 1-4  alkyl-, C 3-10  cycloalkyl-C 1-4  alkyl-, (5-10 membered heteroaryl)-C 1-4  alkyl-, and (4-10 membered heterocycloalkyl)-C 1-4  alkyl- are each optionally substituted with 1, 2, 3, 4, or 5 substituents independently selected from C 1-4  alkyl, C 1-4  haloalkyl, C 1-4  cyanoalkyl, halo, CN, OR a7 , SR a7 , C(O)R b7 , C(O)NR c7 R d7 , C(O)OR a7 , OC(O)R b7 , OC(O)NR c7 R d7 , NR c7 R d7 , NR c7 C(O)R b7 , NR c7 C(O)NR c7 R d7 , NR c7 C(O)OR a7 , C(═NR e7 )NR c7 R d7 , NR c7 C(═NR e7 )NR c7 R d7 , S(O)R b7 , S(O)NR c7 R d7 , S(O) 2 R b7 , NR c7 S(O) 2 R b7  NR c7 S(O) 2 NR c7 R d7 , and S(O) 2 NR c7 R d7 ; 
 or any R c5  and R d5  together with the N atom to which they are attached form a 4-, 5-, 6-, or 7-membered heterocycloalkyl group optionally substituted with 1, 2, or 3 substituents independently selected from C 1-6  alkyl, C 3-7  cycloalkyl, 4-7 membered heterocycloalkyl, C 6-10  aryl, 5-6 membered heteroaryl, C 1-6  haloalkyl, halo, CN, OR a7 , SR a7 , C(O)R b7 , C(O)NR c7 R d7 , C(O)OR a7 , OC(O)R b7 , OC(O)NR c7 R d7 , NR c7 R d7 , NR c7 C(O)R b7 , NR c7 C(O)NR c7 R d7 , NR c7 C(O)OR a7 , C(═NR e7 )NR c7 R d7 , NR c7 C(═NR e7 )NR c7 R d7 , S(O)R b7 , S(O)NR c7 R d7 , S(O) 2 R b7 , NR c7 S(O) 2 R b7 , NR c7 S(O) 2 NR c7 R d7 , and S(O) 2 NR c7 R d7 , wherein said C 1-6  alkyl, C 3-7  cycloalkyl, 4-7 membered heterocycloalkyl, C 6-10  aryl, and 5-6 membered heteroaryl are each optionally substituted by 1, 2, or 3 substituents independently selected from halo, C 1-4  alkyl, C 1-4  haloalkyl, C 1-4  cyanoalkyl, CN, OR a7 , SR a7 , C(O)R b7 , C(O)NR c7 R d7 , C(O)OR a7 , OC(O)R b7 , OC(O)NR c7 R d7 , NR c7 R d7 , NR c7 C(O)R b7 , NR c7 C(O)NR c7 R d7 , NR c7 C(O)OR a7 , C(═NR e7 )NR c7 R d7 , NR c7 C(═NR e7 )NR c7 R d7 , S(O)R b7 , S(O)NR c7 R d7 , S(O) 2 R b7 , NR c7 S(O) 2 R b7 , NR c7 S(O) 2 NR c7 R d7 , and S(O) 2 NR c7 R d7 ; 
 each R a6 , R b6 , R c6 , and R d6  is independently selected from H, C 1-6  alkyl, C 1-4  haloalkyl, C 2-6  alkenyl, and C 2-6  alkynyl, wherein said C 1-6  alkyl, C 2-6  alkenyl, and C 2-6  alkynyl are each optionally substituted with 1, 2, 3, 4, or 5 substituents independently selected from C 1-4  alkyl, C 1-4  haloalkyl, C 1-4  cyanoalkyl, halo, CN, OR a7 , SR a7 , C(O)R b7 , C(O)NR c7 R d7 , C(O)OR a7 , OC(O)R b7 , OC(O)NR c7 R d7 , NR c7 R d7 , NR c7 C(O)R b7 , NR c7 C(O)NR c7 R d7 , NR c7 C(O)OR a7 , C(═NR e7 )NR c7 R d7 , NR c7 C(═NR e7 )NR c7 R d7 , S(O)R b7 , S(O)NR c7 R d7 , S(O) 2 R b7 , NR c7 S(O) 2 R b7 , NR c7 S(O) 2 NR c7 R d7 , and S(O) 2 NR c7 R d7 ; 
 or any R c6  and R d6  together with the N atom to which they are attached form a 4-, 5-, 6-, or 7-membered heterocycloalkyl group optionally substituted with 1, 2, or 3 substituents independently selected from C 1-6  alkyl, C 1-6  haloalkyl, halo, CN, OR a7 , SR a7 , C(O)R b7 , C(O)NR c7 R d7 , C(O)OR a7 , OC(O)R b7 , OC(O)NR c7 R d7 , NR c7 R d7 , NR c7 C(O)R b7 , NR c7 C(O)NR c7 R d7  NR c7 C(O)OR a7 , C(═NR e7 )NR c7 R d7 , NR c7 C(═NR e7 )NR c7 R d7 , S(O)R b7 , S(O)NR c7 R d7 , S(O) 2 R b7 , NR c7 S(O) 2 R b7 , NR c7 S(O) 2 NR c7 R d7 , and S(O) 2 NR c7 R d7 ; 
 each R a7 , R b7 , R c7 , and R d7  is independently selected from H, C 1-4  alkyl, C 1-4  haloalkyl, C 2-4  alkenyl, and C 2-4  alkynyl, wherein said C 1-4  alkyl, C 2-4  alkenyl, and C 2-4  alkynyl are each optionally substituted with 1, 2, or 3 substituents independently selected from OH, CN, amino, halo, C 1-4  alkyl, C 1-4  alkoxy, C 1-4  alkylthio, C 1-4  alkylamino, di(C 1-4  alkyl)amino, C 1-4  haloalkyl, and C 1-4  haloalkoxy; and 
 each R e1 , R e2 , R e3 , R e4 , R e5 , R e6 , and R e7  is independently selected from H, C 1-4  alkyl, and CN. 
 
       
     
     
         47 . The method of  claim 46 , wherein X is N. 
     
     
         48 . The method of  claim 46 , wherein X is CR X . 
     
     
         49 . The method of  claim 46 , wherein R 1  is halo, C 1-6  alkyl, C 2-6  alkenyl, C 2-6  alkynyl, C 1-6  haloalkyl, Cy 1 , OR a1 , C(O)R b1 , C(O)NR c1 R d1 , C(O)OR a1 , NR c1 R d1 , NR c1 C(O)R b1 , NR c1 C(O)OR a1 , S(O) 2 R b1 , or S(O) 2 NR c1 R d1 ; wherein said C 1-6  alkyl, C 2-6  alkenyl, and C 2-6  alkynyl are each optionally substituted with 1, 2, or 3 substituents independently selected from Cy 1 , halo, CN, OR a1 , C(O)R b1 , C(O)NR c1 R d1 , C(O)OR a1 , NR c1 R d1 , NR c1 C(O)R b1 , S(O) 2 R b1 , and S(O) 2 NR c1 R d1 . 
     
     
         50 . The method of  claim 46 , wherein R 1  is pyrrolidin-3-ylmethoxy, 2-pyrrolidin-3-ylethyl, (1-methylpyrrolidin-3-yl)ethyl, 3-[(methylamino)methyl]phenyl, 3-aminopyrrolidin-1-yl)methyl]phenyl, piperazin-1-ylmethyl, 4-methylpiperazin-1-yl)methyl, 3-(dimethylamino)pyrrolidin-1-yl, 3-(methylamino)pyrrolidin-1-yl, or (1-methylpyrrolidin-3-yl)methoxy. 
     
     
         51 . The method of  claim 46 , wherein each Cy 1  is independently selected from phenyl, C 3-7  cycloalkyl, 5-6 membered heteroaryl, and 4-7 membered heterocycloalkyl, each of which is optionally substituted with 1, 2, 3, or 4 substituents independently selected from R Cy . 
     
     
         52 . The method of  claim 46 , wherein each Cy 1  is phenyl, pyrrolidinyl, or piperazinyl, each optionally substituted with 1 or 2 substituents independently selected from C 1-4  alkyl and NR c6 R d6 , wherein said C 1-4  alkyl is optionally substituted with NR c6 R d6 . 
     
     
         53 . The method of  claim 46 , wherein R Cy  is C 1-4  alkyl and NR c6 R d6 , wherein said C 1-4  alkyl is optionally substituted with NR c6 R d6 . 
     
     
         54 . The method of  claim 46 , wherein each R a1  is independently selected from H, C 1-6  alkyl, and Cy 4 ; wherein said C 1-6  alkyl is optionally substituted with 1, 2, or 3 substituents independently selected from Cy 4 , halo, CN, OR a3 , C(O)R b3 , C(O)NR c3 R d3 , C(O)OR a3 , NR c3 R d3 , NR c3 C(O)R b3 , S(O) 2 R b3 , and S(O) 2 NR c3 R d3 . 
     
     
         55 . The method of  claim 46 , wherein each R a1  is pyrrolidinylmethyl optionally substituted by 1 C 1-4  alkyl. 
     
     
         56 . The method of  claim 46 , wherein the compound is a compound having Formula IIa: 
       
         
           
           
               
               
           
         
         or a pharmaceutically acceptable salt thereof. 
       
     
     
         57 . The method of  claim 46 , wherein the compound is a compound having Formula IIb: 
       
         
           
           
               
               
           
         
         or a pharmaceutically acceptable salt thereof. 
       
     
     
         58 . The method of  claim 46 , wherein the compound is a compound having Formula IIIa: 
       
         
           
           
               
               
           
         
         or a pharmaceutically acceptable salt thereof. 
       
     
     
         59 . The method of  claim 46 , wherein the compound is a compound having Formula 
       
         
           
           
               
               
           
         
         or a pharmaceutically acceptable salt thereof. 
       
     
     
         60 . The method of  claim 46 , wherein the compound is selected from:
 4-{5-(4-methylphenyl)-8-[(3R)-pyrrolidin-3-ylmethoxy][1,2,4]triazolo[1,5-a]pyridin-6-yl}benzonitrile;   4-[5-(4-methylphenyl)-8-(2-pyrrolidin-3-ylethyl)[1,2,4]triazolo[1,5-a]pyridin-6-yl]benzonitrile;   4-{5-(4-methylphenyl)-8-[2-(1-methylpyrrolidin-3-yl)ethyl][1,2,4]triazolo[1,5-a]pyridin-6-yl}benzonitrile;   4-[8-{3-[(methylamino)methyl]phenyl)}-5-(4-methylphenyl)[1,2,4]triazolo[1,5-a]pyridin-6-yl]benzonitrile;   4-[8-{3-[(3-aminopyrrolidin-1-yl)methyl]phenyl}-5-(4-methylphenyl)[1,2,4]triazolo[1,5-a]pyridin-6-yl]benzonitrile;   4-[5-(4-methylphenyl)-8-(piperazin-1-ylmethyl)[1,2,4]triazolo[1,5-a]pyridin-6-yl]benzonitrile;   4-{5-(4-methylphenyl)-8-[(4-methylpiperazin-1-yl)methyl][1,2,4]triazolo[1,5-a]pyridin-6-yl}benzonitrile;   4-[8-{[(3S)-3-(dimethylamino)pyrrolidin-1-yl]methyl}-5-(4-methylphenyl)-[1,2,4]triazolo-[1,5-a]pyridin-6-yl]benzonitrile;   4-[8-{[(3R)-3-(dimethylamino)pyrrolidin-1-yl]methyl}-5-(4-methylphenyl)-[1,2,4]triazolo-[1,5-a]pyridin-6-yl]benzonitrile;   4-[8-{[(3S)-3-(methylamino)pyrrolidin-1-yl]methyl}-5-(4-methylphenyl)-[1,2,4]triazolo[1,5-a]pyridin-6-yl]benzonitrile;   4-[8-{[(3R)-3-(methylamino)pyrrolidin-1-yl]methyl}-5-(4-methylphenyl)-[1,2,4]triazolo[1,5-a]pyridin-6-yl]benzonitrile;   4-{5-(4-methylphenyl)-8-[(3R)-pyrrolidin-3-ylmethoxy][1,2,4]triazolo[1,5-a]pyrazin-6-yl}benzonitrile; and   4-(5-(4-methylphenyl)-8-{[(3R)-1-methylpyrrolidin-3-yl]methoxy}[1,2,4]triazolo[1,5-a]pyrazin-6-yl)benzonitrile,   or a pharmaceutically acceptable salt of any of the aforementioned.   
     
     
         61 . The method of  claim 46 , wherein said disease is leukemia. 
     
     
         62 . The method of  claim 61 , wherein said leukemia is acute myelogenous leukemia. 
     
     
         63 . The method of  claim 61 , wherein said leukemia is acute lymphoblastic leukemia. 
     
     
         64 . The method of  claim 61 , wherein said leukemia is acute promyelocytic leukemia. 
     
     
         65 . The method of  claim 61 , wherein said leukemia is chronic lymphocytic leukemia. 
     
     
         66 . The method of  claim 61 , wherein said leukemia is chronic myelogenous leukemia. 
     
     
         67 . The method of  claim 46 , wherein said lung cancer is undifferentiated small cell lung cancer. 
     
     
         68 . The method of  claim 46 , wherein said lung cancer is non-small cell lung cancer. 
     
     
         69 . The method of  claim 46 , wherein said lung cancer is bronchogenic carcinoma. 
     
     
         70 . The method of  claim 46 , wherein said lung cancer is alveolar carcinoma. 
     
     
         71 . The method of  claim 46 , wherein said lung cancer is bronchial adenoma. 
     
     
         72 . The method of  claim 46 , wherein said lung cancer is chondromatous hamartoma. 
     
     
         73 . The method of  claim 46 , wherein said lung cancer is mesothelioma. 
     
     
         74 . The method of  claim 46 , wherein said lung cancer is squamous cell carcinoma. 
     
     
         75 . The method of  claim 46 , wherein said lung cancer is undifferentiated large cell lung cancer. 
     
     
         76 . The method of  claim 46 , wherein said lung cancer is adenocarcinoma. 
     
     
         77 . The method of  claim 46 , wherein said disease is Ewing's sarcoma. 
     
     
         78 . The method of  claim 46 , wherein said disease is prostate cancer. 
     
     
         79 . The method of  claim 46 , wherein said disease is myelofibrosis.