[CH3:1][C:2]1[N:6]2[C:7]3[CH:13]=[C:12]([CH3:14])[NH:11][C:8]=3[CH:9]=[CH:10][C:5]2=[N:4][N:3]=1.C([O-])([O-])=O.[K+].[K+].[CH2:21](Br)[C:22]1[CH:27]=[CH:26][CH:25]=[CH:24][CH:23]=1>CN(C=O)C.CC#N>[CH2:21]([N:11]1[C:8]2[CH:9]=[CH:10][C:5]3[N:6]([C:2]([CH3:1])=[N:3][N:4]=3)[C:7]=2[CH:13]=[C:12]1[CH3:14])[C:22]1[CH:27]=[CH:26][CH:25]=[CH:24][CH:23]=1A solution of 1,7-dimethyl-6H-pyrrolo[2,3-e][1,2,4]triazolo[4,3-a]pyridine (10. mg, 0.054 mmol, from Step 5) in DMF (1.5 mL) was treated with K2CO3 (22 mg, 0.16 mmol) and a solution of benzyl bromide (6.4 μL, 0.054 mmol, Aldrich) in DMF (0.10 mL). After stirring for 2 hours, the mixture was diluted with MeCN, filtered and purified via preparative HPLC-MS (Waters XBridge C18, eluting with a gradient of MeCN/H2O containing 0.15% NH4OH) to afford product (12 mg, 81%).
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