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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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Structure Chemical Name CAS MF
2-bromo-6-(tetrahydrofuran-3-yl-d7)pyridine 2-bromo-6-(tetrahydrofuran-3-yl-d7)pyridine
2-bromo-6-(4-(methyl-d3)-1H-imidazol-1-yl-2,5-d2)pyridine 2-bromo-6-(4-(methyl-d3)-1H-imidazol-1-yl-2,5-d2)pyridine 2256744-71-3 C9H3BrD5N3
2-bromo-4-(tetrahydrofuran-3-yl)pyridine-3,5,6-d3 2-bromo-4-(tetrahydrofuran-3-yl)pyridine-3,5,6-d3
3-(4-(methyl-d3)-1H-pyrazol-1-yl-3,5-d2)pyridin-4-amine 3-(4-(methyl-d3)-1H-pyrazol-1-yl-3,5-d2)pyridin-4-amine 2256744-86-0 C9H5D5N4
6-chloro-N-methylpyridazine-4,5-d2-3-carboxamide 6-chloro-N-methylpyridazine-4,5-d2-3-carboxamide 2826916-77-0 C6H4ClD2N3O
2-chloro-4-(methyl-d3)-5-(trifluoromethyl)pyridine-3,6-d2 2-chloro-4-(methyl-d3)-5-(trifluoromethyl)pyridine-3,6-d2
3-(4-(methyl-d3)-1H-pyrazol-1-yl-3,5-d2)pyridin-4,5,6-d3-2-amine 3-(4-(methyl-d3)-1H-pyrazol-1-yl-3,5-d2)pyridin-4,5,6-d3-2-amine 2256744-91-7 C9H2D8N4
5-(trifluoromethyl)pyrimidin-4,6-d2-2-amine 5-(trifluoromethyl)pyrimidin-4,6-d2-2-amine
3-(4-bromo-1H-pyrazol-1-yl-3,5-d2)pyridin-4,5,6-d3-2-amine 3-(4-bromo-1H-pyrazol-1-yl-3,5-d2)pyridin-4,5,6-d3-2-amine 2256745-06-7 C8H2BrD5N4
6-chloro-2-(methyl-d3)pyridazin-3(2H)-one-4,5-d2 6-chloro-2-(methyl-d3)pyridazin-3(2H)-one-4,5-d2
2-bromo-5-(4-bromo-1H-pyrazol-1-yl-3,5-d2)pyridine-3,4,6-d3 2-bromo-5-(4-bromo-1H-pyrazol-1-yl-3,5-d2)pyridine-3,4,6-d3 2256745-12-5 C8Br2D5N3
8-bromo-6-(methoxy-d3)imidazo[1,2-b]pyridazine-2,3,7-d3 8-bromo-6-(methoxy-d3)imidazo[1,2-b]pyridazine-2,3,7-d3
6-(4-bromo-1H-pyrazol-1-yl-3,5-d2)pyridin-2-amine 6-(4-bromo-1H-pyrazol-1-yl-3,5-d2)pyridin-2-amine 2256745-27-2 C8H5BrD2N4
5-bromo-3-(methoxy-d3)pyridazine-4,6-d2 5-bromo-3-(methoxy-d3)pyridazine-4,6-d2
5-bromo-2-(4-bromo-1H-pyrazol-1-yl-3,5-d2)pyridine-3,4,6-d3 5-bromo-2-(4-bromo-1H-pyrazol-1-yl-3,5-d2)pyridine-3,4,6-d3 2256745-32-9 C8Br2D5N3
2-bromo-6-(fluoromethyl)pyridine-3,4,5-d3 2-bromo-6-(fluoromethyl)pyridine-3,4,5-d3 2891512-71-1 C6H2BrD3FN
5-bromo-2-chloro-4-fluoro-3-(methyl-d3)pyridine 5-bromo-2-chloro-4-fluoro-3-(methyl-d3)pyridine
3-(4-bromo-1H-imidazol-1-yl-2,5-d2)pyridin-2-amine 3-(4-bromo-1H-imidazol-1-yl-2,5-d2)pyridin-2-amine 2256745-48-7 C8H5BrD2N4
4-bromo-2-(1,1,1-trifluoro-2-(methyl-d3)propan-2-yl-3,3,3-d3)pyridine 4-bromo-2-(1,1,1-trifluoro-2-(methyl-d3)propan-2-yl-3,3,3-d3)pyridine
4-fluoro-3-(methyl-d3)pyridine 4-fluoro-3-(methyl-d3)pyridine
5-chloro-4-(methyl-d3)-2-(trifluoromethyl)pyridine-3,6-d2 5-chloro-4-(methyl-d3)-2-(trifluoromethyl)pyridine-3,6-d2
5-bromo-4-(methoxy-d3)-2-(trifluoromethyl)pyridine 5-bromo-4-(methoxy-d3)-2-(trifluoromethyl)pyridine
6-fluoro-4-(methyl-d3)pyridin-3-amine 6-fluoro-4-(methyl-d3)pyridin-3-amine
4-bromopyridin-3,5,6-d3-2-ol 4-bromopyridin-3,5,6-d3-2-ol 2241872-52-4 C5HBrD3NO
2-(3-bromo-1H-pyrazol-1-yl-4,5-d2)-5-(methyl-d3)pyridine-3,4,6-d3 2-(3-bromo-1H-pyrazol-1-yl-4,5-d2)-5-(methyl-d3)pyridine-3,4,6-d3 2256742-53-5 C9BrD8N3
2-bromopyridine-3,4,6-d3 2-bromopyridine-3,4,6-d3
pyridin-3,5,6-d3-2-amine pyridin-3,5,6-d3-2-amine
pyridin-2,4,5-d3-3-ol pyridin-2,4,5-d3-3-ol
4-bromopyridine-2,3,6-d3 4-bromopyridine-2,3,6-d3
4-bromopyrimidine-2,5-d2 4-bromopyrimidine-2,5-d2
pyrimidin-5,6-d2-4-amine pyrimidin-5,6-d2-4-amine
3-chloropyridazine-5,6-d2 3-chloropyridazine-5,6-d2
5-bromo-2-(fluoromethyl-d2)pyrimidine-4,6-d2 5-bromo-2-(fluoromethyl-d2)pyrimidine-4,6-d2 2891518-40-2 C5BrD4FN2
3-bromo-6-(fluoromethyl)pyridazine-4,5-d2 3-bromo-6-(fluoromethyl)pyridazine-4,5-d2 2891519-77-8 C5H2BrD2FN2
5-bromo-4-chloro-2-(methoxy-d3)pyrimidine-6-d 5-bromo-4-chloro-2-(methoxy-d3)pyrimidine-6-d 2891521-03-0 C5BrClD4N2O
4-amino-1-(methyl-d3)pyrimidin-2(1H)-one 4-amino-1-(methyl-d3)pyrimidin-2(1H)-one 1477481-92-7 C5H4D3N3O
2-bromo-4-(methyl-d3)-3-(trifluoromethyl)pyridine-5,6-d2 2-bromo-4-(methyl-d3)-3-(trifluoromethyl)pyridine-5,6-d2 2891511-06-9 C7BrD5F3N
6-(methyl-d3)-5-(trifluoromethyl)pyridin-3,4-d2-2-ol 6-(methyl-d3)-5-(trifluoromethyl)pyridin-3,4-d2-2-ol 2891521-23-4 C7HD5F3NO
6-bromo-3-(methyl-d3)-2-(trifluoromethyl)pyridine 6-bromo-3-(methyl-d3)-2-(trifluoromethyl)pyridine 2891520-34-4 C7H2BrD3F3N
4-(methyl-d3)-6-(trifluoromethyl)pyridin-2-amine 4-(methyl-d3)-6-(trifluoromethyl)pyridin-2-amine 2891519-10-9 C7H4D3F3N2
4-bromo-3-(methyl-d3)-1H-pyrrolo[2,3-b]pyridine-2,5,6-d3 4-bromo-3-(methyl-d3)-1H-pyrrolo[2,3-b]pyridine-2,5,6-d3 2891519-79-0 C8HBrD6N2
2-bromo-5-(4-bromo-1H-imidazol-1-yl-2,5-d2)pyridine 2-bromo-5-(4-bromo-1H-imidazol-1-yl-2,5-d2)pyridine 2256745-53-4 C8H3Br2D2N3
5-(4-(methyl-d3)-1H-imidazol-1-yl-2,5-d2)pyridin-3-amine 5-(4-(methyl-d3)-1H-imidazol-1-yl-2,5-d2)pyridin-3-amine 2256745-68-1 C9H5D5N4
3-(4-(methyl-d3)-1H-imidazol-1-yl-2,5-d2)pyridin-2,5,6-d3-4-amine 3-(4-(methyl-d3)-1H-imidazol-1-yl-2,5-d2)pyridin-2,5,6-d3-4-amine 2256745-74-9 C9H2D8N4
5-bromo-2-(4-bromo-1H-imidazol-1-yl-2,5-d2)pyridine-3,4,6-d3 5-bromo-2-(4-bromo-1H-imidazol-1-yl-2,5-d2)pyridine-3,4,6-d3 2256745-89-6 C8Br2D5N3
2-(4-bromo-1H-imidazol-1-yl-2,5-d2)pyridin-4,5,6-d3-3-amine 2-(4-bromo-1H-imidazol-1-yl-2,5-d2)pyridin-4,5,6-d3-3-amine 2256745-94-3 C8H2BrD5N4
3-bromo-6-(1H-imidazol-1-yl-d3)pyridazine 3-bromo-6-(1H-imidazol-1-yl-d3)pyridazine 2256746-95-7 C7H2BrD3N4
2-(1H-imidazol-1-yl-d3)pyrimidin-5-amine 2-(1H-imidazol-1-yl-d3)pyrimidin-5-amine 2256747-00-7 C7H4D3N5
2-bromo-4-(1H-pyrazol-1-yl-d3)pyrimidine-5,6-d2 2-bromo-4-(1H-pyrazol-1-yl-d3)pyrimidine-5,6-d2 2256747-19-8 C7BrD5N4
2-fluoro-4-isobutylpyridine 2-fluoro-4-isobutylpyridine 2256747-93-8 C9H12FN
4-fluoro-2-((tetrahydrofuran-3-yl)oxy)pyridine 4-fluoro-2-((tetrahydrofuran-3-yl)oxy)pyridine 2256747-99-4 C9H10FNO2
4-bromo-6-cyclopropylpyridin-2(1H)-one 4-bromo-6-cyclopropylpyridin-2(1H)-one 2256748-04-4 C8H8BrNO
1-(5-fluoropyridin-2-yl)-1H-pyrazol-4-amine 1-(5-fluoropyridin-2-yl)-1H-pyrazol-4-amine 1247201-19-9
5-(oxetan-3-yloxy)pyridin-3-amine 5-(oxetan-3-yloxy)pyridin-3-amine 1595692-23-1 C8H10N2O2
3-bromo-1H-pyrrolo[3,2-b]pyridine-2,5,6,7-d4 3-bromo-1H-pyrrolo[3,2-b]pyridine-2,5,6,7-d4
1H-imidazo[4,5-c]pyridine-2,4,6,7-d4 1H-imidazo[4,5-c]pyridine-2,4,6,7-d4
4-bromo-6-chloro-2-(methyl-d3)pyrimidine-5-d 4-bromo-6-chloro-2-(methyl-d3)pyrimidine-5-d
7-bromo-1H-imidazo[4,5-b]pyridine-2,5,6-d3 7-bromo-1H-imidazo[4,5-b]pyridine-2,5,6-d3
4-chloro-2-(methyl-d3)-6-(pyridin-2-yl-d4)pyrimidine-5-d 4-chloro-2-(methyl-d3)-6-(pyridin-2-yl-d4)pyrimidine-5-d
6-chloro-2,8-bis(methyl-d3)imidazo[1,2-b]pyridazine-3,7-d2 6-chloro-2,8-bis(methyl-d3)imidazo[1,2-b]pyridazine-3,7-d2
(3,4-bis(methoxy-d3)pyridin-2-yl-5,6-d2)methanethiol (3,4-bis(methoxy-d3)pyridin-2-yl-5,6-d2)methanethiol
3-chloro-5-(methyl-d3)pyridazine-4,6-d2 3-chloro-5-(methyl-d3)pyridazine-4,6-d2
5-bromo-2-(difluoromethyl-d)pyrimidine-4,6-d2 5-bromo-2-(difluoromethyl-d)pyrimidine-4,6-d2
3-chloro-6-fluoropyridazine-4,5-d2 3-chloro-6-fluoropyridazine-4,5-d2
tert-butyl 4-(pyridin-4-yl-d4)piperidine-1-carboxylate-2,2,3,3,4,5,5,6,6-d9 tert-butyl 4-(pyridin-4-yl-d4)piperidine-1-carboxylate-2,2,3,3,4,5,5,6,6-d9
4-bromo-3-(1,1-difluoroethyl-2,2,2-d3)pyridine-2,5,6-d3 4-bromo-3-(1,1-difluoroethyl-2,2,2-d3)pyridine-2,5,6-d3 2891518-38-8 C7BrD6F2N
2-bromo-3-(1,1-difluoroethyl)pyridine-4,5,6-d3 2-bromo-3-(1,1-difluoroethyl)pyridine-4,5,6-d3 2891520-37-7 C7H3BrD3F2N
2-bromo-4-(1,1-difluoroethyl-2,2,2-d3)pyrimidine 2-bromo-4-(1,1-difluoroethyl-2,2,2-d3)pyrimidine 2891520-13-9 C6H2BrD3F2N2
6-bromo-5-(methyl-d3)pyridin-2-amine 6-bromo-5-(methyl-d3)pyridin-2-amine 2891519-99-4 C6H4BrD3N2
2-bromo-6-(methoxy-d2)pyridine-3,4,5-d3 2-bromo-6-(methoxy-d2)pyridine-3,4,5-d3 2891517-94-3 C6HBrD5NO
3-bromo-5-(methoxy-d2)pyridine 3-bromo-5-(methoxy-d2)pyridine 2891512-53-9 C6H4BrD2NO
2-bromo-4-(methoxy-d2)pyrimidine 2-bromo-4-(methoxy-d2)pyrimidine 2891520-92-4 C5H3BrD2N2O
5-bromo-4-methoxypyrimidine-2,6-d2 5-bromo-4-methoxypyrimidine-2,6-d2 2891518-60-6 C5H3BrD2N2O
5-chloro-1H-pyrrolo[3,2-b]pyridine-2,3,6,7-d4 5-chloro-1H-pyrrolo[3,2-b]pyridine-2,3,6,7-d4 2891521-10-9 C7HClD4N2
3,4-bis(benzyloxy)-5-(phenoxymethyl)dihydrofuran-2(3H)-one 3,4-bis(benzyloxy)-5-(phenoxymethyl)dihydrofuran-2(3H)-one 2460489-87-4 C25H24O5
5-bromo-N-ethyl-N,4-dimethylpyrimidin-2-amine 5-bromo-N-ethyl-N,4-dimethylpyrimidin-2-amine 1368217-42-8 C8H12BrN3
5-bromo-4-methyl-2-(4-methylpiperazin-1-yl)pyrimidine 5-bromo-4-methyl-2-(4-methylpiperazin-1-yl)pyrimidine 1578254-98-4
5-bromo-4-methyl-2-(1H-pyrrol-1-yl)pyrimidine 5-bromo-4-methyl-2-(1H-pyrrol-1-yl)pyrimidine 2460489-95-4 C9H8BrN3
5-bromo-4-methyl-2-((tetrahydrofuran-3-yl)oxy)pyrimidine 5-bromo-4-methyl-2-((tetrahydrofuran-3-yl)oxy)pyrimidine 1935418-94-2 C9H11BrN2O2
2-cyclobutyl-6-(trifluoromethyl)pyridin-4-amine 2-cyclobutyl-6-(trifluoromethyl)pyridin-4-amine 2460494-45-3 C10H11F3N2
4-bromo-2-isobutyl-6-(trifluoromethyl)pyridine 4-bromo-2-isobutyl-6-(trifluoromethyl)pyridine 2460491-05-6 C10H11BrF3N
4-bromo-2-cyclobutyl-6-(trifluoromethyl)pyridine 4-bromo-2-cyclobutyl-6-(trifluoromethyl)pyridine 2460501-27-1 C10H9BrF3N
4-bromo-2-methyl-6-(tetrahydrofuran-3-yl)pyridine 4-bromo-2-methyl-6-(tetrahydrofuran-3-yl)pyridine 2460491-13-6 C10H12BrNO
4-ethyl-6-methylpyridin-2-amine 4-ethyl-6-methylpyridin-2-amine 1062575-84-1 C8H12N2
6-bromo-5-propylpyridin-3-amine 6-bromo-5-propylpyridin-3-amine 2460494-25-9 C8H11BrN2
3-bromo-5-isopropylpyridin-4-ol 3-bromo-5-isopropylpyridin-4-ol 2460493-39-2 C8H10BrNO
3-bromo-4-(thiophen-2-yl)-4H-1,2,4-triazole 3-bromo-4-(thiophen-2-yl)-4H-1,2,4-triazole 2460492-35-5 C6H4BrN3S
3-bromo-4-(2-chlorophenyl)-4H-1,2,4-triazole 3-bromo-4-(2-chlorophenyl)-4H-1,2,4-triazole 2460492-27-5 C8H5BrClN3
3-bromo-4-(2-(trifluoromethyl)phenyl)-4H-1,2,4-triazole 3-bromo-4-(2-(trifluoromethyl)phenyl)-4H-1,2,4-triazole 2460492-34-4 C9H5BrF3N3
4-(4-methoxyphenyl)-4H-1,2,4-triazol-3-amine 4-(4-methoxyphenyl)-4H-1,2,4-triazol-3-amine 2460494-26-0 C9H10N4O
4-isobutyl-4H-1,2,4-triazol-3-amine 4-isobutyl-4H-1,2,4-triazol-3-amine 1248329-11-4 C6H12N4
3-bromo-4-(sec-butyl)-5-methyl-4H-1,2,4-triazole 3-bromo-4-(sec-butyl)-5-methyl-4H-1,2,4-triazole 2460491-88-5 C7H12BrN3
3-bromo-4-cyclopentyl-5-methyl-4H-1,2,4-triazole 3-bromo-4-cyclopentyl-5-methyl-4H-1,2,4-triazole 2460501-38-4 C8H12BrN3
3-bromo-5-(4-methoxyphenyl)-4H-1,2,4-triazole 3-bromo-5-(4-methoxyphenyl)-4H-1,2,4-triazole 1783359-37-4 C9H8BrN3O
5-bromo-4-(3-(trifluoromethyl)phenyl)-1H-1,2,3-triazole 5-bromo-4-(3-(trifluoromethyl)phenyl)-1H-1,2,3-triazole 2460492-02-6 C9H5BrF3N3
5-bromo-4-(thiophen-3-yl)-1H-1,2,3-triazole 5-bromo-4-(thiophen-3-yl)-1H-1,2,3-triazole 2460493-79-0 C6H4BrN3S
5-bromo-4-(2-bromophenyl)-1H-1,2,3-triazole 5-bromo-4-(2-bromophenyl)-1H-1,2,3-triazole 1491143-77-1 C8H5Br2N3
5-bromo-4-(tetrahydrofuran-3-yl)-1H-1,2,3-triazole 5-bromo-4-(tetrahydrofuran-3-yl)-1H-1,2,3-triazole 2460500-31-4 C6H8BrN3O
4-bromo-5-cyclopropyl-1-ethyl-1H-1,2,3-triazole 4-bromo-5-cyclopropyl-1-ethyl-1H-1,2,3-triazole 2460500-52-9 C7H10BrN3
3-(furan-3-yl)-4H-1,2,4-triazole 3-(furan-3-yl)-4H-1,2,4-triazole 2460501-18-0 C6H5N3O
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