PYRANODIPYRIDINE COMPOUNDCompounds represented by formulae (I) to (XXII) or pharmaceutically acceptable salts thereof:A compound selected from the group consisting of: 9-(2-chlorophenyl)-7-(pyridin-3-yl)-6H-pyrano[3,2-b:5,4-b']dipyridin-8(7H)-one:  2-fluoro-6-(7-(5-methoxypyridin-3-yl)-8-oxo-7,8-dihydro-6H-pyrano[3,2-b:5,4-b']dipyridin-9-yl)benzonitrile:  2-fluoro-6-(7-(6-methylpyridin-3-yl)-8-oxo-7,8-dihydro-6H-pyrano[3 ,2-b:5 ,4-b']dipyridin-9-yl)benzonitrile:  9-(2-chloro-3-fluorophenyl)-7-(6-methylpyridin-3-yl)-6H-pyrano[3,2-b:5,4-b']dipyridin-8(7H)-one: 2-fluoro-6-(7-(2-methoxypyrimidin-5-yl)-8-oxo-7,8-dihydro-6H-pyrano[3,2-b:5,4-b']dipyridin-9-yl)benzonitrile:  7-(pyridin-3-yl)-9-(2,3,5,6-tetrafluorophenyl)-6H-pyrano[3,2-b:5,4-b']dipyridin-8(7H)-one:  3-(8-oxo-7-(thiophen-3-yl)-7,8-dihydro-6H-pyrano[3,2-b:5,4-b']dipyridin-9-yl)picolinonitrile:  3-(8-oxo-7-(thiophen-3-yl)-7,8-dihydro-6H-pyrano[3,2-b:5,4-b']dipyridin-9-yl)pyrazine-2-carbonitrile: 9-(2-fluorophenyl)-7-phenyl-6H-pyrano[3,2-b:5,4-b']dipyridin-8(7H)-one:  2-(7-(4-fluorophenyl)-8-oxo-7,8-dihydro-6H-pyrano[3,2-b:5,4-b']dipyridin-9-yl)benzonitrile:  3-(7-(4-fluorophenyl)-8-oxo-7,8-dihydro-6H-pyrano[3,2-b:5,4-b']dipyridin-9-yl)picolinonitrile:  3-(7-(2-fluorophenyl)-8-oxo-7,8-dihydro-6H-pyrano[3,2-b:5,4-b']dipyridin-9-yl)picolinonitrile: 3-(3-fluoro-8-oxo-7-phenyl-7,8-dihydro-6H-pyrano[3,2-b:5,4-b']dipyridin-9-yl)picolinonitrile:  2-fluoro-6-(3-fluoro-8-oxo-7-(pyridin-3-yl)-7,8-dihydro-6H-pyrano[3,2-b:5,4-b']dipyridin-9-yl)benzonitrile:  2-fluoro-6-(7-(5-fluoropyridin-3-yl)-8-oxo-7,8-dihydro-6H-pyrano[3,2-b:5,4-b']dipyridin-9-yl)benzonitrile:  2-fluoro-6-(10-fluoro-3-oxo-4-(pyridin-3-yl)-4,5-dihydro-3H-chromeno[3,4-b]pyridin-2-yl)benzonitrile: 9-(2-chloro-3-fluorophenyl)-7-(5-fluoropyridin-3-yl)-6H-pyrano[3,2-b:5,4-b']dipyridin-8(7H)-one:  2-fluoro-6-(8-oxo-7-(pyrimidin-5-yl)-7,8-dihydro-6H-pyrano[3,2-b:5,4-b']dipyridin-9-yl)benzonitrile:  3 ,6-difluoro-2-(8-oxo-7-(pyridin-3-yl)-7,8-dihydro-6H-pyrano[3,2-b:5,4-b']dipyridin-9-yl)benzonitrile:  2-(7-(5-chloropyridin-3-yl)-8-oxo-7,8-dihydro-6H-pyrano[3,2-b:5,4-b']dipyridin-9-yl)-6-fluorobenzonitrile: 2-fluoro-6-(7-(2-methylpyrimidin-5-yl)-8-oxo-7,8-dihydro-6H-pyrano[3,2-b:5,4-b']dipyridin-9-yl)benzonitrile:  and 9-(3-fluoro-2-methylphenyl)-7-(pyridin-3-yl)-6H-pyrano[3,2-b:5,4-b']dipyridin-8(7H)-one:  or a pharmaceutically acceptable salt thereof.
피라노디피리딘 화합물화학식 (I) 내지 (XXII)로 표시되는 화합물 또는 이의 약제학적으로 허용 가능한 염:9-(2-클로로페닐)-7-(피리딘-3-일)-6H-피라노[3,2-b:5,4-b']디피리딘-8(7H)-온,2-플루오로-6-(7-(5-메톡시피리딘-3-일)-8-옥소-7,8-디하이드로-6H-피라노[3,2-b:5,4-b']디피리딘-9-일)벤조니트릴,2-플루오로-6-(7-(6-메틸피리딘-3-일)-8-옥소-7,8-디하이드로-6H-피라노[3,2-b:5,4-b']디피리딘-9-일)벤조니트릴,9-(2-클로로-3-플루오로페닐)-7-(6-메틸피리딘-3-일)-6H-피라노[3,2-b:5,4-b']디피리딘-8(7H)-온,2-플루오로-6-(7-(2-메톡시피리미딘-5-일)-8-옥소-7,8-디하이드로-6H-피라노[3,2-b:5,4-b']디피리딘-9-일)벤조니트릴,7-(피리딘-3-일)-9-(2,3,5,6-테트라플루오로페닐)-6H-피라노[3,2-b:5,4-b']디피리딘-8(7H)-온,3-(8-옥소-7-(티오펜-3-일)-7,8-디하이드로-6H-피라노[3,2-b:5,4-b']디피리딘-9-일)피콜리노니트릴,3-(8-옥소-7-(티오펜-3-일)-7,8-디하이드로-6H-피라노[3,2-b:5,4-b']디피리딘-9-일)피라진-2-카보니트릴,9-(2-플루오로페닐)-7-페닐-6H-피라노[3,2-b:5,4-b']디피리딘-8(7H)-온,2-(7-(4-플루오로페닐)-8-옥소-7,8-디하이드로-6H-피라노[3,2-b:5,4-b']디피리딘-9-일)벤조니트릴, 3-(7-(4-플루오로페닐)-8-옥소-7,8-디하이드로-6H-피라노[3,2-b:5,4-b']디피리딘-9-일)피콜리노니트릴,3-(7-(2-플루오로페닐)-8-옥소-7,8-디하이드로-6H-피라노[3,2-b:5,4-b']디피리딘-9-일)피콜리노니트릴,3-(3-플루오로-8-옥소-7-페닐-7,8-디하이드로-6H-피라노[3,2-b:5,4-b']디피리딘-9-일)피콜리노니트릴,2-플루오로-6-(3-플루오로-8-옥소-7-(피리딘-3-일)-7,8-디하이드로-6H-피라노[3,2-b:5,4-b']디피리딘-9-일)벤조니트릴,2-플루오로-6-(7-(5-플루오로피리딘-3-일)-8-옥소-7,8-디하이드로-6H-피라노[3,2-b:5,4-b']디피리딘-9-일)벤조니트릴,2-플루오로-6-(10-플루오로-3-옥소-4-(피리딘-3-일)-4,5-디하이드로-3H-크로메노[3,4-b]피리딘-2-일)벤조니트릴,9-(2-클로로-3-플루오로페닐)-7-(5-플루오로피리딘-3-일)-6H-피라노[3,2-b:5,4-b']디피리딘-8(7H)-온,2-플루오로-6-(8-옥소-7-(피리미딘-5-일)-7,8-디하이드로-6H-피라노[3,2-b:5,4-b']디피리딘-9-일)벤조니트릴,3,6-디플루오로-2-(8-옥소-7-(피리딘-3-일)-7,8-디하이드로-6H-피라노[3,2-b:5,4-b']디피리딘-9-일)벤조니트릴,2-(7-(5-클로로피리딘-3-일)-8-옥소-7,8-디하이드로-6H-피라노[3,2-b:5,4-b']디피리딘-9-일)-6-플루오로벤조니트릴,2-플루오로-6-(7-(2-메틸피리미딘-5-일)-8-옥소-7,8-디하이드로-6H-피라노[3,2-b:5,4-b']디피리딘-9-일)벤조니트릴 및9-(3-플루오로-2-메틸페닐)-7-(피리딘-3-일)-6H-피라노[3,2-b:5,4-b']디피리딘-8(7H)-온으로 구성된 군으로부터 선택된 화합물 또는 이의 약제학적으로 허용 가능한 염.