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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(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
4-methoxy-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine-2,5,6-d3	2710297-37-1	C12H15BD3NO3
3-(methoxy-d3)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine	2710297-41-7	C12H15BD3NO3
6-Bromo-5'-acetyl-2,2'-bipyridine	1185315-21-2	C12H9BrN2O
tert-butyl 4-(4-bromo-6-(methyl-d3)pyridin-2-yl-3,5-d2)piperazine-1-carboxylate-2,2,3,3,5,5,6,6-d8	2363788-06-9	C15H9BrD13N3O2
4-Amino-5-(3-methoxyphenyl)thiazole	1368874-19-4	C10H10N2OS
tert-butyl 4-(2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-4-yl)piperidine-1-carboxylate-2,2,3,3,4,5,5,6,6-d9	2710294-93-0	C21H24BD9N2O4
4-Bromo-5-(3-fluorophenyl)thiazole	1264039-11-3	C9H5BrFNS
6-Bromo-4'-formyl-2,2'-bipyridine	1185307-81-6	C11H7BrN2O
2-(difluoromethyl-d)-5-(methyl-d3)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine-3,6-d2	2710297-83-7	C13H12BD6F2NO2
4-chloro-2-(methoxy-d3)-5-(methyl-d3)pyrimidine-6-d	2363779-39-7	C6ClD7N2O
5-(tetrahydrofuran-2-yl)thiophen-2-amine	2222935-43-3	C8H11NOS
2-(difluoromethyl-d)-5-(methoxy-d3)-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine-4,6-d2	2711075-21-5	C13H12BD6F2NO3
5-Bromo-2-(6'-chloro-2'-pyridyl)thiazole	1185316-76-0	C8H4BrClN2S
5-bromo-4-(methoxy-d3)-6-(methyl-d3)pyrimidine-2-d	2363782-58-3	C6BrD7N2O
4-Amino-5-(2-thienyl)thiazole	1368467-70-2	C7H6N2S2
3-Methoxy-6-(6'-bromo-2'-pyridyl)pyridazine	1185316-96-4
4-Bromo-5-(3-furyl)thiazole	1374664-54-6	C7H4BrNOS
2-(tetrahydro-2H-pyran-4-yl-3,3,4,5,5-d5)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine-3,5,6-d3	2710295-19-3	C16H16BD8NO3
2-(tetrahydro-2H-pyran-4-yl-3,3,4,5,5-d5)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyrimidine-4,6-d2	2710295-40-0	C15H16BD7N2O3
5-(methoxy-d3)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-2-(trifluoromethyl)pyridine-3,6-d2	2710296-03-8	C13H12BD5F3NO3
3,6-bis(methyl-d3)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-2-(trifluoromethyl)pyridine-5-d
2-(difluoromethyl-d)-5-fluoro-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine-3,6-d2	2710298-52-3	C12H12BD3F3NO2
tert-butyl 6-(methyl-d3)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-3,4-dihydropyridine-1(2H)-carboxylate-2,2,3,3,4,4-d6
tert-butyl 2-(methyl-d3)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-3,4-dihydropyridine-1(2H)-carboxylate-2,3,3,4,4-d5
tert-butyl 2,3-dimethyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-3,4-dihydropyridine-1(2H)-carboxylate-2,3,4,4-d4
1-benzyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1,2,3,6-tetrahydropyridine-3,3,5-d3
2-(3,3-difluoropyrrolidin-1-yl)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyrimidine-4,6-d2
7-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-2,3-dihydro-1H-pyrido[2,3-b][1,4]oxazine-2,2,3,3,6,8-d6
2-Bromo-4-(4-trifluoromethylphenyl)furan	1215074-07-9	C11H6BrF3O
5-Amino-4-(3,5-difluorophenyl)thiazole	1374664-42-2	C9H6F2N2S
2-(trifluoromethyl)pyridin-3,5,6-d3-4-amine	2768657-38-9	C6H2D3F3N2
3-fluoro-2-(methoxy-d3)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine	2368221-59-2	C12H14BD3FNO3
3-(methoxy-d3)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-2-(trifluoromethyl)pyridine	2304817-71-6	C13H14BD3F3NO3
3-bromo-2-(methyl-d3)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine-4,6-d2	2368221-76-3	C12H12BBrD5NO2
3-fluoro-2-(methoxy-d3)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine-4,6-d2	2368221-82-1	C12H12BD5FNO3
6-Chloro-4-amino-6'-bromo-2,2'-bipyridine	1185306-32-4
2-(Pyrimidin-4-yl)phenylboronic acid	2225181-66-6	C10H9BN2O2
3,5-Dibromo-2-methylethylaminopyridine	1289049-17-7	C8H10Br2N2
3,5-Dibromo-2-(3-methyl-1H-pyrazol-1-yl)pyridine	1289111-48-3	C9H7Br2N3
6-Chloro-2-(4'-cyano-2'-pyridyl)pyrazine	1185314-41-3	C10H5ClN4
2-Amino-4-(6'-chloro-2'-pyrazinyl)pyrimidine	1185315-31-4	C8H6ClN5
6,6'-Dichloro-2-methyl-4-(2'-pyrazinyl)pyrimidine	1185308-10-4	C9H6Cl2N4
6-Hydroxymethyl-6'-cyano-2,2'-bipyridine	1185306-48-2	C12H9N3O
5-Methoxycarbonyl-6'-cyano-2,2'-bipyridine	1185309-07-2	C13H9N3O2
6-Chloro-2-(6'-cyano-2'-pyridyl)pyrazine	1185306-68-6	C10H5ClN4
4-(5-bromo-6-chloropyrimidin-4-yl-2-d)morpholine-2,2,3,3,5,5,6,6-d8	2363781-09-1	C8BrClD9N3O
1-(5-bromopyrimidin-4-yl-2,6-d2)azetidin-2,2,3,4,4-d5-3-ol	2363783-40-6	C7HBrD7N3O
1-(pyrimidin-2-yl-d3)azetidin-2,2,3,4,4-d5-3-ol	2363788-43-4	C7HD8N3O
1-(3-bromopyridin-2-yl-4,5,6-d3)azetidin-2,2,3,4,4-d5-3-ol	2363779-52-4	C8HBrD8N2O
3-(azetidin-1-yl-d6)-5-bromopyridine-2,4,6-d3	2363782-77-6	C8BrD9N2
1-(5-bromopyrimidin-2-yl-4,6-d2)ethan-1-one-2,2,2-d3	2363785-98-0	C6BrD5N2O
1-(2-bromopyrimidin-4-yl)ethan-1-one-2,2,2-d3	2363788-33-2	C6H2BrD3N2O
2-cyclopropoxy-4-fluoropyridine-3,5,6-d3	2256713-34-3	C8H5D3FNO
1-(2-bromopyridin-4-yl-3,5,6-d3)piperidin-2,2,3,3,4,5,5,6,6-d9-4-ol	2363788-61-6	C10HBrD12N2O
tert-butyl 2,3-bis(methyl-d3)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-3,4-dihydropyridine-1(2H)-carboxylate-2,3,4,4,6-d5
3-fluoro-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine-4,6-d2
3-methoxy-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridazine-4,6-d2
3-(methyl-d3)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-2-(trifluoromethyl)pyridine-4,6-d2
5-bromo-3-fluoro-2-(methyl-d3)pyridine-4,6-d2	2294946-92-0	C6BrD5FN
4-fluoro-6-(methoxy-d3)-5-(methyl-d3)pyridin-3-amine	2294946-01-1	C7H3D6FN2O
2-bromo-5-(methyl-13C)thiophene	1227960-34-0	C5H5BrS
4-chloropyridin-3,5,6-d3-2-amine-d2	2294944-94-6	C5ClD5N2
2,5-difluoropyrimidine-4,6-d2	2294944-98-0	C4D2F2N2
5-bromo-2-(piperidin-1-yl-d10)pyrimidine-4,6-d2	2363785-99-1	C9BrD12N3
2-(2-bromopyrimidin-4-yl-5,6-d2)propan-1,1,1,3,3,3-d6-2-ol	2363788-12-7	C7HBrD8N2O
2-bromo-4-(piperidin-1-yl-d10)pyrimidine-5,6-d2	2363787-97-5	C9BrD12N3
2-bromo-4-(piperazin-1-yl-2,2,3,3,5,5,6,6-d8)pyrimidine-5,6-d2	2363781-22-8	C8HBrD10N4
4-fluoro-2,3-bis(methyl-d3)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine	2304818-15-1	C13H13BD6FNO2
2-((oxetan-3-yl-d5)oxy)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine	2368223-30-5	C14H15BD5NO4
3-((oxetan-3-yl-d5)oxy)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine-2,5,6-d3	2364585-62-4	C14H12BD8NO4
6-Methoxycarbonyl-2-(6'-cyano-2'-pyridyl)pyrazine	1185317-64-9	C12H8N4O2
3-Chloro-4-methyl-6-(6'-cyano-2'-pyridyl)pyridazine	1185313-56-7	C11H7ClN4
4-Bromo-6-(6'-cyano-2'-pyridyl)pyrimidine	1185317-96-7	C10H5BrN4
6-Chloro-5'-cyano-2,2'-bipyridine	1185318-52-8	C11H6ClN3
5-Hydroxy-5'-cyano-2,2'-bipyridine	1185312-22-4
6-Chloro-2-(5'-cyano-2'-pyridyl)pyrazine	1185311-70-9	C10H5ClN4
5-Amino-2-(5'-cyano-2'-pyridyl)pyrazine	1185318-73-3	C10H7N5
2-Bromo-4-(5'-cyano-2'-pyridyl)pyrimidine	1185318-53-9	C10H5BrN4
5-Bromo-4-amino-2-(n-propyl)pyrimidine	1381936-11-3
5-Bromo-4-amino-2-(2-pyridyl)pyrimidine	1381935-33-6
5-Bromo-4-(3-fluorophenyl)thiazole	1243839-08-8	C9H5BrFNS
5-Amino-4-(3-methoxyphenyl)thiazole	1250602-13-1	C10H10N2OS
5-Bromo-4-(n-butyl)-2-aminothiazole	1243839-46-4	C7H11BrN2S
2-Amino-5-(3-thienyl)thiophene	1314355-11-7	C8H7NS2
4-Bromo-5-(3-tolyl)thiazole	1264034-19-6	C10H8BrNS
4-Bromo-5-(2-methoxyphenyl)thiazole	1378877-05-4	C10H8BrNOS
4-Amino-5-(3-trifluoromethylphenyl)thiazole	1374665-07-2	C10H7F3N2S
4-Bromo-5-(3,5-difluorophenyl)thiazole	1264038-68-7	C9H4BrF2NS
2-Chloro-4-(tetrahydrothiophen-2-yl)pyridine	1353854-20-2	C9H10ClNS
2-bromo-6-(3-(methoxy-d3)azetidin-1-yl-2,2,3,4,4-d5)pyridine	2363789-52-8	C9H3BrD8N2O
4-bromo-2-(3-(methoxy-d3)azetidin-1-yl-2,2,3,4,4-d5)pyrimidine	2363786-57-4	C8H2BrD8N3O
3-bromo-6-(3-(methoxy-d3)azetidin-1-yl-2,2,3,4,4-d5)pyridazine-4,5-d2	2363789-30-2	C8BrD10N3O
2-(oxetan-3-yloxy)pyridin-4,5,6-d3-3-amine	2363781-21-7	C8H7D3N2O2
6-((oxetan-3-yl-d5)oxy)pyridin-2,4,5-d3-3-amine	2363782-04-9	C8H2D8N2O2
2-bromo-6-((oxetan-3-yl-d5)oxy)pyridine-3,4,5-d3	2363789-58-4	C8BrD8NO2
2-bromo-4-((oxetan-3-yl-d5)oxy)pyridine	2363781-58-0	C8H3BrD5NO2
4-((oxetan-3-yl-d5)oxy)pyridin-3,5,6-d3-2-amine	2363787-85-1	C8H2D8N2O2
6-(oxetan-3-yloxy)pyridazin-4,5-d2-3-amine	2363780-61-2	C7H7D2N3O2
4-bromo-2-((oxetan-3-yl-d5)oxy)pyrimidine-5,6-d2	2363782-62-9	C7BrD7N2O2
2-((oxetan-3-yl-d5)oxy)pyrimidin-5-amine	2363782-89-0	C7H4D5N3O2