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複素環(huán)式化合物

複素環(huán)式化合物は炭素原子と非炭素原子により構(gòu)成される環(huán)狀構(gòu)造の化合物である。これらの非炭素原子はヘテロ原子と総稱され，一般的なヘテロ原子は窒素、酸素、硫黃等である。前述したラクトン、ラクタム、環(huán)狀エーテル等の化合物はいずれも複素環(huán)式化合物であり，しかしこれらの化合物の性質(zhì)は同じ種類の鎖式化合物と類似するため，いずれも対応する章節(jié)に組み込んで説明する。本章は主に環(huán)構(gòu)造が穏やかで、ある程度の芳香族性を有する複素環(huán)式化合物，即ち芳香族複素環(huán)式化合物を説明する。複素環(huán)式化合物は種類が膨大であり，數(shù)量が多く，自然界に広く分布しており，多くの天然の複素環(huán)式化合物は動物、植物の體內(nèi)で重要な生理學(xué)的作用を果たす。例えば：植物內(nèi)のクロロフィル、動物の血中ヘモグロビン、漢方薬中の有効成分のアルカロイドと一部の配糖體、一部の抗生物質(zhì)とビタミン、タンパク質(zhì)のあるアミノ酸とヌクレオチドを構(gòu)成する塩基等はいずれも複素環(huán)構(gòu)造を含有する。従來の薬物中で、複素環(huán)構(gòu)造を含有するものは約半分を占める。そのため，複素環(huán)式化合物は有機化合物（特に有機薬物）中で重要な地位を占める。複素環(huán)式化合物中で五員、六員複素環(huán)及びそれらの縮合複素環(huán)化合物は最も普及しており，かつ最も重要である。そのため環(huán)のサイズによって，複素環(huán)式化合物は五員複素環(huán)及び六員複素環(huán)という二つの種類に分けられる。例えば上記フラン、チオフェン、ピロール、オキサゾール、イミダゾール及びそれらの縮合複素環(huán)化合物のインドール、ベンゾイミダゾール、ジベンゾフラン等はいずれも五員複素環(huán)式化合物であり，それに対してピリジン、ピリミジン及びそれらの縮合複素環(huán)化合物のキノリン、キナゾリン等はいずれも六員複素環(huán)式化合物である。各五員複素環(huán)式化合物と六員複素環(huán)式化合物中で，環(huán)構(gòu)造中のヘテロ原子の數(shù)量によって，また一つのヘテロ原子を含有する複素環(huán)及び二つ又はそれ以上のヘテロ原子を含有する複素環(huán)に分けられる。例えばフラン、チオフェン、ピリジン、インドール、キノリン、ジベンゾフラン等は一つのヘテロ原子を含有する複素環(huán)式化合物である；イミダゾール、ピリミジン、ベンゾイミダゾール、キナゾリン等は二つのヘテロ原子を含有する複素環(huán)式化合物である；それに対してプリンは二つ以上のヘテロ原子を含有するため，即ち複數(shù)のヘテロ原子を含有する複素環(huán)式化合物である。分子中の環(huán)構(gòu)造の形式によって，複素環(huán)式化合物はさらに複素単環(huán)及び縮合複素環(huán)という二つの種類に分けられる。例えばフラン、ピリジン、ピリミジン、イミダゾール等はいずれも複素単環(huán)式化合物であり，インドール、キノリン、ジベンゾフラン、プリン等は縮合複素環(huán)式化合物である。

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Chemical Name	CAS	MF
3-(6-aminopyridazin-3-yl)tetrahydro-4H-pyran-4-one	2806721-12-8	C9H11N3O2
4-bromo-1-(p-tolyl)-1H-1,2,3-triazole	2256748-67-9	C9H8BrN3
3-(2-bromopyridin-4-yl)tetrahydro-4H-pyran-4-one	2806728-67-4	C10H10BrNO2
tert-butyl 4-(6-bromopyridin-2-yl)-3-methylpiperidine-1-carboxylate	2806720-00-1	C16H23BrN2O2
4-bromo-1-(3-(trifluoromethyl)phenyl)-1H-1,2,3-triazole	2256748-72-6	C9H5BrF3N3
3-(2-chloropyrimidin-5-yl)tetrahydro-4H-pyran-4-one	2806729-74-6	C9H9ClN2O2
4-bromo-1-(3-methoxyphenyl)-1H-1,2,3-triazole	2256748-75-9	C9H8BrN3O
5-bromo-1-isopropyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-1,2,3-triazole	2364586-27-4	C11H19BBrN3O2
3,5-dimethyl-2-(trifluoromethyl)pyridin-4-amine	2645411-69-2	C8H9F3N2
4-(4-bromo-1H-1,2,3-triazol-1-yl)benzonitrile	2256748-79-3	C9H5BrN4
2-bromo-4-((tetrahydro-2H-pyran-2-yl)methoxy)pyridine	2645413-88-1	C11H14BrNO2
(5-fluoro-2-(methyl-d3)pyridin-4-yl-3,6-d2)boronic acid	2368221-13-8	C6H2BD5FNO2
6,6'-bis(trifluoromethyl)-[2,2'-bipyridin]-4-amine	2294947-95-6	C12H7F6N3
4-((2,4-dimethoxybenzyl)oxy)-2-fluoropyridine	2645419-85-6	C14H14FNO3
2-bromo-6-(3-methylbicyclo[1.1.1]pentan-1-yl)pyridine	2697155-12-5	C11H12BrN
5-bromo-1-(pyridin-4-yl)-1H-imidazol-2-amine	2294945-58-5	C8H7BrN4
3-bromo-6-isopropyl-2-(trifluoromethyl)pyridine	2891518-22-0	C9H9BrF3N
3-bromo-6-(tetrahydrofuran-2-yl)-2-(trifluoromethyl)pyridine	2891510-91-9	C10H9BrF3NO
5-bromo-4-fluoro-2-methoxy-3-methylpyridine	2294945-14-3	C7H7BrFNO
6-ethyl-5-methoxypyridin-3-amine	2294949-92-9	C8H12N2O
2-(azetidin-1-yl)-4-bromothiazole	1289132-45-1
tert-butyl 4-(4-bromopyrimidin-2-yl)piperazine-1-carboxylate	2363781-60-4	C13H19BrN4O2
2-(5-bromopyrimidin-2-yl)tetrahydro-4H-pyran-4-one	2358725-17-2	C9H9BrN2O2
2-(4-hydroxypyrimidin-2-yl)tetrahydro-4H-pyran-4-one	2806721-62-8	C9H10N2O3
3-(4-aminopyridin-2-yl)tetrahydro-4H-pyran-4-one	2806729-30-4	C10H12N2O2
3-(5-aminopyrimidin-2-yl)tetrahydro-4H-pyran-4-one	2806729-33-7	C9H11N3O2
3-(2-aminopyrimidin-4-yl)tetrahydro-4H-pyran-4-one	2806721-18-4	C9H11N3O2
3-(6-bromopyrimidin-4-yl)tetrahydro-4H-pyran-4-one	2806729-03-1	C9H9BrN2O2
2-(thiazol-5-yl)aniline	1883691-63-1	C9H8N2S
6-bromo-4H-chromeno[4,3-c]isoxazole	2821813-63-0	C10H6BrNO2
tert-butyl 4-(4-chloropyrimidin-2-yl)piperidine-1-carboxylate	1105187-35-6	C14H20ClN3O2
(6-(difluoromethyl-d)pyridin-3-yl-2,4,5-d3)boronic acid	2710297-86-0	C6H2BD4F2NO2
tert-butyl 2-(5-bromo-6-(trifluoromethyl)pyridin-2-yl)morpholine-4-carboxylate	2891520-15-1	C15H18BrF3N2O3
6-bromo-3-cyclopentyl-2-(trifluoromethyl)pyridine	2891511-78-5	C11H11BrF3N
5-bromo-2-isopropylpyridin-4-ol	2891510-93-1	C8H10BrNO
5-bromo-2-(tetrahydro-2H-pyran-4-yl)pyridin-4-ol	2891521-16-5	C10H12BrNO2
tert-butyl 5-cyclopropyl-6-iodo-2,3-dihydro-4H-1,4-oxazine-4-carboxylate	2891520-54-8	C12H18INO3
tert-butyl 6-bromo-5-(thiophen-3-yl)-2,3-dihydro-4H-1,4-oxazine-4-carboxylate	2891519-02-9	C13H16BrNO3S
tert-butyl 2,6-dibromo-3,5-dicyclopropyl-4H-1,4-oxazine-4-carboxylate	2891520-58-2	C15H19Br2NO3
2-cyclopropyl-4-iodo-5-(trifluoromethyl)pyridine	2891512-21-1	C9H7F3IN
2-chloro-6-cyclopropyl-4-fluoropyridine	2952895-37-1	C8H7ClFN
1-cyclobutyl-5-fluoro-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-1,2,3-triazole	2364585-55-5	C12H19BFN3O2
1-cyclobutyl-5-methoxy-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-1,2,3-triazole	2364586-04-7	C13H22BN3O3
4-(oxetan-3-yloxy)-2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine	2364585-50-0	C14H20BNO4
2-(azetidin-1-yl)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)thiazole	1350755-39-3	C12H19BN2O2S
5-(2-fluoro-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-imidazol-1-yl)pyrimidine	2460671-97-8	C13H16BFN4O2
1-cyclopropyl-5-ethyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-1,2,3-triazole	2460672-21-1	C13H22BN3O2
5-bromo-2-(3-methylbicyclo[1.1.1]pentan-1-yl)pyrimidine	2697155-01-2	C10H11BrN2
1-(pyridazin-3-yl)-1H-1,2,3-triazol-4-amine	2256754-43-3	C6H6N6
4-(4-bromo-1H-1,2,3-triazol-1-yl)-2-methylpyridine	2256754-47-7	C8H7BrN4
2-(4-bromothiazol-2-yl)oxazole	1700626-70-5	C6H3BrN2OS
4-bromo-2-(pyrimidin-4-yl)oxazole	2697162-27-7	C7H4BrN3O
2-bromo-6-methyl-4-(piperidin-3-yl)pyridine	2768657-86-7	C11H15BrN2
2-methoxy-6-(piperidin-3-yl)pyridin-4-amine	2768654-47-1	C11H17N3O
5-bromo-1-(tetrahydrofuran-2-yl)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-1,2,3-triazole	2364573-09-9	C12H19BBrN3O3
1-cyclopropyl-5-methoxy-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-1,2,3-triazole	2364585-71-5	C12H20BN3O3
4-methyl-2-(oxetan-3-yloxy)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)thiazole	2364586-24-1	C13H20BNO4S
1-(2-methyl-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-4-yl)ethan-1-one	2460672-54-0	C14H20BNO3
2-cyclopentyl-6-methyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine	2460671-76-3	C17H26BNO2
1,5-diethyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-1,2,3-triazole	2460671-31-0	C12H22BN3O2
4-(5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-3-yl)pyrimidine	2460672-69-7	C15H18BN3O2
2-chloro-4-cyclopropylpyrido[2,3-d]pyrimidine	2891512-84-6	C10H8ClN3
3-bromo-6-(tetrahydro-2H-pyran-3-yl)-2-(trifluoromethyl)pyridine	2891520-43-5	C11H11BrF3NO
3-bromo-6-(piperidin-3-yl)-2-(trifluoromethyl)pyridine	2891520-46-8	C11H12BrF3N2
6-bromo-3-(tetrahydro-2H-pyran-3-yl)-2-(trifluoromethyl)pyridine	2891518-97-9	C11H11BrF3NO
tert-butyl 3-(5-bromo-4-hydroxypyridin-2-yl)pyrrolidine-1-carboxylate	2891511-92-3	C14H19BrN2O3
5-bromo-2-(tetrahydrofuran-3-yl)pyridin-4-amine	2721118-33-6	C9H11BrN2O
6-bromo-1-cyclopropylpyridin-2(1H)-one	2891520-52-6	C8H8BrNO
tert-butyl 5-cyclopropyl-2,3-dihydro-4H-1,4-oxazine-4-carboxylate	2891520-56-0	C12H19NO3
tert-butyl 3,5-dibromo-4H-1,4-oxazine-4-carboxylate	2891518-31-1	C9H11Br2NO3
tert-butyl 3-(2-bromopyridin-4-yl)morpholine-4-carboxylate	2891510-96-4	C14H19BrN2O3
tert-butyl 3-(2-aminopyrimidin-4-yl)morpholine-4-carboxylate	2891518-21-9	C13H20N4O3
8-bromo-6-cyclopropylimidazo[1,2-b]pyridazine
2-chloro-4-(((4-fluoropyridin-2-yl)oxy)methyl)pyrimidine	2973762-83-1	C10H7ClFN3O
2-bromo-5-(4-bromo-1H-imidazol-1-yl)pyridine	2952896-35-2	C8H5Br2N3
4-chloro-5-cyclopropyl-2-(trifluoromethyl)pyridine
2-bromo-4-cyclopropylpyridin-3-amine
4-bromo-3-cyclopropyl-2-methylpyridine	2294944-89-9
5-bromo-2-methoxy-3-(tetrahydro-2H-pyran-3-yl)pyridine	2294950-05-1	C11H14BrNO2
5-cyclobutyl-6-methoxypyridin-3-amine	2294948-53-9	C10H14N2O
5-methoxy-6-(tetrahydrofuran-3-yl)pyridin-3-amine	2294950-08-4	C10H14N2O2
2-(3-methyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazol-1-yl)pyrimidine	2460672-73-3	C14H19BN4O2
(6-(furan-2-yl)-2-methylpyridin-3-yl)boronic acid	2710290-30-3	C10H10BNO3
(6-(1H-imidazol-1-yl)-2-methylpyridin-3-yl)boronic acid	2710290-36-9	C9H10BN3O2
3-(2,2-difluorocyclopropyl)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine	2710293-40-4	C14H18BF2NO2
2,4-difluoro-6-methoxy-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine	2710293-64-2	C12H16BF2NO3
2,4-difluoro-6-(tetrahydro-2H-pyran-4-yl)-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine	2710293-79-9	C16H22BF2NO3
1-(2,2-difluorocyclopropyl)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-1,2,3-triazole	2710293-84-6	C11H16BF2N3O2
2-((1-methylazetidin-3-yl)oxy)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine	2710294-01-0	C15H23BN2O3
4-((tetrahydro-2H-pyran-2-yl)methoxy)-2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine	2710294-17-8	C17H26BNO4
8-isopropylquinoxalin-5-amine	2806720-60-3	C11H13N3
8-(oxetan-3-yl)quinoxalin-5-ol	2806719-94-6	C11H10N2O2
tert-butyl 4-(2-bromopyrimidin-4-yl)-3-methylpiperidine-1-carboxylate	2806719-06-0	C15H22BrN3O2
2-(2-isopropylphenyl)morpholine	1510773-67-7
3-(6-bromopyridin-2-yl)tetrahydro-4H-pyran-4-one	2806729-62-2	C10H10BrNO2
2-(6-chloropyridazin-3-yl)tetrahydro-4H-pyran-4-one	2358969-02-3	C9H9ClN2O2
2-(2-hydroxypyrimidin-5-yl)tetrahydro-4H-pyran-4-one	2806729-64-4	C9H10N2O3
2-(6-aminopyridin-3-yl)tetrahydro-4H-pyran-4-one	2806720-15-8	C10H12N2O2
3-(5-hydroxypyridin-2-yl)tetrahydro-4H-pyran-4-one	2806720-20-5	C10H11NO3
3-(6-hydroxypyridazin-3-yl)tetrahydro-4H-pyran-4-one	2806719-39-9	C9H10N2O3