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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(chēng)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(lèi)の鎖式化合物と類(lèi)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(lèi)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(dòng)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(dòng)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(lái)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(jī)化合物（特に有機(jī)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(lèi)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(lèi)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
4-fluoro-2-(tetrahydrofuran-3-yl)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-2H-1,2,3-triazole
5-fluoro-1-isopropyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-1,2,3-triazole	2364586-39-8	C11H19BFN3O2
3-(3-methyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazol-1-yl)pyridazine	2460671-52-5	C14H19BN4O2
5-bromo-1-(pyridin-2-yl)-1H-imidazol-2-amine	2294944-31-1	C8H7BrN4
(5-fluoro-2-(methoxy-d3)pyridin-4-yl-3,6-d2)boronic acid	2368221-14-9	C6H2BD5FNO3
tert-butyl 3-methyl-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-2,3-dihydro-4H-1,4-oxazine-4-carboxylate
tert-butyl 3-methyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-2,3-dihydro-4H-1,4-oxazine-4-carboxylate
(2-methyl-6-(tetrahydro-2H-pyran-4-yl)pyridin-3-yl)boronic acid	2710290-24-5	C11H16BNO3
6-cyclopropyl-8-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)imidazo[1,2-b]pyridazine
5-chloro-7-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)imidazo[1,2-a]pyridine	2710293-29-9	C13H16BClN2O2
8-cyclopropyl-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)imidazo[1,2-b]pyridazine
4-bromo-6,6'-difluoro-2,2'-bipyridine	2294947-92-3	C10H5BrF2N2
3-cyclohexyl-2-methoxy-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine	2304817-76-1	C18H28BNO3
(2-methyl-6-(thiazol-2-yl)pyridin-3-yl)boronic acid	2710290-33-6	C9H9BN2O2S
5-(2,2-difluoro-1-methylcyclopropyl)-2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine	2710293-36-8	C15H20BF2NO2
2-methoxy-3-(tetrahydrofuran-2-yl)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine	2304812-98-2	C16H24BNO4
2-(2,2-difluorocyclopropyl)-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine	2710293-42-6	C14H18BF2NO2
3-(azetidin-1-yl)-4-bromopyridine	2363781-08-0	C8H9BrN2
6,6'-difluoro-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-2,2'-bipyridine	2304817-59-0	C16H17BF2N2O2
N,N-dimethyl-1-(pyridin-2-yl)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-imidazol-2-amine	2304817-70-5	C16H23BN4O2
4-(azetidin-1-yl)-2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine	1421856-00-9	C14H21BN2O2
5-bromo-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-1,2,3-triazole	2364585-95-3	C8H13BBrN3O2
(4-fluoro-6-(methyl-d3)pyridin-3-yl-2,5-d2)boronic acid	2368221-19-4	C6H2BD5FNO2
(2-cyano-6-(methyl-d3)pyridin-4-yl-3,5-d2)boronic acid	2368221-24-1	C7H2BD5N2O2
2,4-difluoro-6-methyl-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine	2710293-66-4	C12H16BF2NO2
2-(2,2-difluorocyclopropyl)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyrimidine	2710293-81-3	C13H17BF2N2O2
4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1-(trimethylsilyl)-1H-1,2,3-triazole	2710293-87-9	C11H22BN3O2Si
2-(tert-butyl)-4-fluoro-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine	2710294-03-2	C15H23BFNO2
7-methyl-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyrido[2,3-d]pyridazin-8(7H)-one	2710294-08-7	C14H18BN3O3
5-(oxetan-2-ylmethoxy)-2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine	2710294-19-0	C15H22BNO4
7-methyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyrazolo[1,5-a]pyrimidine	2710294-41-8	C13H18BN3O2
4-fluoro-2-methyl-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine	2710294-49-6	C12H17BFNO2
2-(bicyclo[1.1.1]pentan-1-yl)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyrimidine	2710295-82-0	C15H21BN2O2
2-(6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-2-yl)oxazole	2710296-10-7	C14H17BN2O3
2-(pyridin-3-yl)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)oxazole	2710297-57-5	C14H17BN2O3
1-phenyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-1,2,3-triazole	2710298-30-7	C14H18BN3O2
6-(sec-butyl)-2,4-difluoro-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine	2710293-70-0	C15H22BF2NO2
6-cyclopentyl-2,4-difluoro-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine	2710293-75-5	C16H22BF2NO2
2-((1-methylazetidin-3-yl)oxy)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine	2710293-97-1	C15H23BN2O3
2-(2-methoxyethoxy)-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine	1352817-26-5	C14H22BNO4
2-(oxetan-2-ylmethoxy)-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine	2710294-14-5	C15H22BNO4
2-(bicyclo[1.1.1]pentan-1-yl)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine	2710295-64-8	C16H22BNO2
2-(3-methylbicyclo[1.1.1]pentan-1-yl)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)thiazole	2710295-86-4	C15H22BNO2S
(6-(difluoromethyl)pyridin-3-yl-2,4,5-d3)boronic acid	2710297-87-1	C6H3BD3F2NO2
2-(azetidin-1-yl)-4-bromopyrimidine	2363781-81-9	C7H8BrN3
1-ethyl-5-methoxy-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-1,2,3-triazole	2364586-23-0	C11H20BN3O3
2-(2-cyclopropylfuran-3-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane	2364585-51-1	C13H19BO3
4-cyclobutyl-2-methyl-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine	2460672-29-9	C16H24BNO2
3-isopropyl-4-methoxy-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine	2460671-36-5	C15H24BNO3
3-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-imidazol-2-yl)pyridine	2460672-17-5	C14H18BN3O2
4-(5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)thiophen-2-yl)pyrimidine	2460671-37-6	C14H17BN2O2S
4-(6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-2-yl)pyrimidine	2460672-58-4	C15H18BN3O2
2-(3-methyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazol-1-yl)pyridine	2223037-44-1	C15H20BN3O2
2-fluoro-6-(3-methoxyphenyl)-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine	2710289-92-0	C18H21BFNO3
2-(2-fluorophenyl)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-2H-1,2,3-triazole	2710298-65-8	C14H17BFN3O2
4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-2-(m-tolyl)-2H-1,2,3-triazole	2710298-70-5	C15H20BN3O2
4-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-2H-1,2,3-triazol-2-yl)thiazole	2710298-84-1	C11H15BN4O2S
2-(furan-2-yl)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-2H-1,2,3-triazole	2710298-89-6	C12H16BN3O3
6-ethyl-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-2-(trifluoromethyl)pyridine
6-(tert-butyl)-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-2-(trifluoromethyl)pyridine
3-isopropyl-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-2-(trifluoromethyl)pyridine
3-(tetrahydrofuran-3-yl)-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-2-(trifluoromethyl)pyridine
tert-butyl 2-cyclopropyl-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)morpholine-4-carboxylate
3-cyclopropyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)thiophene-2-carbonitrile
tert-butyl 3-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)thiazol-2-yl)morpholine-4-carboxylate
tert-butyl 3-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-2-yl)morpholine-4-carboxylate
4-cyclopropyl-2-(oxetan-3-yl)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-2H-1,2,3-triazole
4-cyclopropyl-2-(tetrahydrofuran-2-yl)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-2H-1,2,3-triazole
tert-butyl 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-1,2,3-triazole-1-carboxylate
5-fluoro-4-methyl-2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine
tert-butyl 2-methyl-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-2,3-dihydro-4H-1,4-oxazine-4-carboxylate
2-chloro-4-fluoro-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine
6-chloro-8-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)imidazo[1,2-b]pyridazine
2-methoxy-3-(tetrahydro-2H-pyran-2-yl)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine	2304812-83-5	C17H26BNO4
2-(pyridin-3-yl)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)oxazole	2710297-44-0	C14H17BN2O3
1-(oxetan-3-yl)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-1,2,3-triazole	2710298-15-8	C11H18BN3O3
2-(sec-butyl)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-2H-1,2,3-triazole	2710298-54-5	C12H22BN3O2
2-(3-methoxyphenyl)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-2H-1,2,3-triazole	2710298-73-8	C15H20BN3O3
2-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-2H-1,2,3-triazol-2-yl)pyrimidine	2710298-78-3	C12H16BN5O2
3-ethyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridazine	1350543-97-3	C12H19BN2O2
tert-butyl 3-(5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-6-(trifluoromethyl)pyridin-2-yl)pyrrolidine-1-carboxylate
tert-butyl 4-(5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-6-(trifluoromethyl)pyridin-2-yl)piperidine-1-carboxylate
3-(1,4-dioxan-2-yl)-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-2-(trifluoromethyl)pyridine
tert-butyl 3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-4H-1,4-oxazine-4-carboxylate
4-cyclopropyl-2-(oxetan-3-yl)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)thiazole
tert-butyl 2-(4-cyclopropyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)thiazol-2-yl)morpholine-4-carboxylate
(2-methyl-6-(tetrahydro-2H-pyran-3-yl)pyridin-3-yl)boronic acid	2710290-25-6	C11H16BNO3
2-(2,2-difluoro-1-methylcyclopropyl)-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine	2710293-37-9	C15H20BF2NO2
2,4-difluoro-6-isobutyl-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine	2710293-71-1	C15H22BF2NO2
2,4-difluoro-6-(tetrahydrofuran-2-yl)-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine	2710293-76-6	C15H20BF2NO3
2-((tetrahydro-2H-pyran-2-yl)methoxy)-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine	2710294-12-3	C17H26BNO4
4-(2-methoxyethoxy)-2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine	1355647-95-8	C14H22BNO4
2-(benzyloxy)-4-fluoro-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine	2710294-33-8	C18H21BFNO3
2-(3-methylbicyclo[1.1.1]pentan-1-yl)-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine	2710295-66-0	C17H24BNO2
4-(3-methylbicyclo[1.1.1]pentan-1-yl)-2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine	2710295-71-7	C17H24BNO2
1-(bicyclo[1.1.1]pentan-1-yl)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-1,2,3-triazole	2710295-93-3	C13H20BN3O2
2-(pyridin-4-yl)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)oxazole	2710297-45-1	C14H17BN2O3
N,N-dimethyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)oxazol-2-amine	2710297-63-3	C11H19BN2O3
2-(pyrrolidin-1-yl)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)oxazole	2710297-69-9	C13H21BN2O3
tert-butyl 3-(5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-1,2,3-triazol-1-yl)azetidine-1-carboxylate	2710298-16-9	C16H27BN4O4