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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
2-fluoro-4-(methoxy-d3)-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine-5,6-d2	2710291-27-1	C12H12BD5FNO3
4-chloro-7-(methyl-d3)-7H-pyrrolo[2,3-d]pyrimidine-2,5,6-d3	2891520-33-3	C7ClD6N3
3,6-difluoropyridazine-4,5-d2	2294949-32-7	C4D2F2N2
3-(methyl-d3)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine	2710291-49-7	C12H15BD3NO2
2-(methoxy-d3)-3-(methyl-d3)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine	2368221-53-6	C13H14BD6NO3
1-(methyl-d3)-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-2(1H)-one-3,4,5-d3	2710291-55-5	C12H12BD6NO3
4-chloro-2-(methoxy-d3)-5-(methyl-d3)pyrimidine	2363780-97-4	C6HClD6N2O
2-bromo-N,N-bis(methyl-d3)pyrimidin-4-amine	2363781-11-5	C6H2BrD6N3
4-(2-bromopyrimidin-4-yl)morpholine-2,2,3,3,5,5,6,6-d8	2363782-70-9	C8H2BrD8N3O
4-chloro-2-isopropoxy-5-(methyl-d3)pyrimidine-6-d	2363789-17-5	C8H7ClD4N2O
2-bromopyridine-4-d	1450990-30-3	C5H3BrDN
5,6-bis(methyl-d3)pyrimidine-2,4(1H,3H)-dione	2600400-22-2	C6H2D6N2O2
2-bromo-3-(methyl-d3)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine	2368221-70-7	C12H14BBrD3NO2
2-bromo-N,N-bis(methyl-d3)pyrimidin-4-amine-5,6-d2	2363779-87-5	C6BrD8N3
5-bromo-4-(methyl-d3)pyrimidine-2,6-d2	2241865-93-8	C5BrD5N2
2-bromo-3-(methyl-d3)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine-4,6-d2	2368221-74-1	C12H12BBrD5NO2
4-bromo-2-(piperazin-1-yl-2,2,3,3,5,5,6,6-d8)pyrimidine-5,6-d2	2363781-68-2	C8HBrD10N4
1-(5-bromo-6-chloropyrimidin-4-yl-2-d)azetidin-2,2,3,4,4-d5-3-ol	2363785-68-4	C7HBrClD6N3O
2-(2-(methoxy-d3)ethoxy-1,1,2,2-d4)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine	2710292-21-8	C14H15BD7NO4
3-(2-methoxyethoxy)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine-2,4,6-d3	2710292-27-4	C14H19BD3NO4
2-((methoxy-d3)methyl-d2)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine	2710292-56-9	C13H15BD5NO3
7-(methyl-d3)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyrazolo[1,5-a]pyrimidine-2,3,6-d3	2710292-90-1	C13H12BD6N3O2
4-fluoro-2-(methoxy-d3)-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine	2710293-06-2	C12H14BD3FNO3
tert-butyl 4-(6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-2-yl-3,4,5-d3)piperidine-1-carboxylate-2,2,3,3,4,5,5,6,6-d9	2710294-83-8	C21H21BD12N2O4
tert-butyl 4-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-2-yl-3,5,6-d3)piperidine-1-carboxylate	2710294-88-3	C21H30BD3N2O4
tert-butyl 4-(6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-3-yl-2,4,5-d3)piperidine-1-carboxylate-2,2,3,3,4,5,5,6,6-d9	2710295-04-6	C21H21BD12N2O4
2-fluoro-6-(methoxy-d3)-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine-4,5-d2	2368221-90-1	C12H12BD5FNO3
2-(methoxy-d3)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-6-(trifluoromethyl)pyridine-3,5-d2	2368221-95-6	C13H12BD5F3NO3
6-(methoxy-d3)pyridin-3-amine	1202760-61-9	C6H8N2O
1-(2-bromopyridin-4-yl-3,5,6-d3)azetidin-2,2,3,4,4-d5-3-ol	2363787-84-0	C8HBrD8N2O
3-(azetidin-1-yl-d6)-4-bromopyridine-2,5,6-d3	2363781-29-5	C8BrD9N2
1-(5-bromopyrimidin-2-yl-4,6-d2)ethan-1-one	2363780-41-8	C6H3BrD2N2O
1-(2-bromopyrimidin-4-yl-5,6-d2)ethan-1-one-2,2,2-d3	2363781-61-5	C6BrD5N2O
1-(5-bromopyridin-2-yl)piperidin-2,2,3,3,4,5,5,6,6-d9-4-ol	2363781-64-8	C10H4BrD9N2O
1-(6-bromopyridin-3-yl)piperidin-2,2,3,3,4,5,5,6,6-d9-4-ol	2363786-24-5	C10H4BrD9N2O
2-(cyclopropoxy-d5)-4-fluoropyridine-3,5,6-d3	2256713-36-5	C8D8FNO
pyrimidine-2,4,6-d3	22527-03-3	C4HD3N2
1-(4-bromopyridin-2-yl-3,5,6-d3)ethan-1-one-2,2,2-d3	2363788-08-1	C7BrD6NO
2-(morpholino-d8)pyridin-4-amine	2363782-79-8	C9H5D8N3O
4-(6-bromopyrimidin-4-yl-2,5-d2)morpholine-2,2,3,3,5,5,6,6-d8	2363783-03-1	C8BrD10N3O
2-bromo-6-(pyrrolidin-1-yl-d8)pyridine	2363788-81-0	C9H3BrD8N2
6-(piperidin-1-yl-d10)pyridin-2,4,5-d3-3-amine	2363785-50-4	C10H2D13N3
5-bromo-4-chloro-6-(ethyl-d5)pyrimidine-2-d	2363783-91-7	C6BrClD6N2
5-bromo-4,6-bis(methyl-d3)pyrimidine-2-d	2363780-64-5	C6BrD7N2
5-bromo-4-(pyrrolidin-1-yl-d8)pyrimidine-2,6-d2	2363779-45-5	C8BrD10N3
dimethyl(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)phosphine oxide	1394346-20-3	C14H22BO3P
2-chloro-4-(cyclopropyl-d5)pyrimidine	2600399-47-9	C7H2ClD5N2
4-bromo-6-fluoropyrimidine-2,5-d2	2600399-03-7	C4BrD2FN2
2-bromo-6-(methyl-d3)pyridin-4-amine	2600400-51-7	C6H4BrD3N2
5-chloroimidazo[1,2-a]pyridine-6,7,8-d3	2645413-63-2	C7H2ClD3N2
3-chloro-6-(methyl-d3)pyridazine-4,5-d2	2645417-05-4	C5ClD5N2
6-bromo-4-(methyl-d3)pyridazin-5-d-3-amine	2645413-16-5	C5H2BrD4N3
2-bromo-4-chloro-6-iodopyridine-3,5-d2	2645416-21-1	C5BrClD2IN
4-Amino-1-(3-fluorophenyl)imidazole	1185762-04-2	C9H8FN3
tert-butyl 4-(5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-2-yl-3,4,6-d3)piperidine-1-carboxylate	2710295-09-1	C21H30BD3N2O4
4-(tetrahydro-2H-pyran-4-yl)-2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine-3,5,6-d3	2710295-24-0	C16H21BD3NO3
2-(tetrahydro-2H-pyran-4-yl-3,3,4,5,5-d5)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine	2710295-29-5	C16H19BD5NO3
4-(methoxy-d3)-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine	2710297-38-2	C12H15BD3NO3
2-(difluoromethyl)-5-methoxy-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine-3,6-d2	2710297-81-5	C13H16BD2F2NO3
2-(difluoromethyl-d)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine-3,4,6-d3	2710297-88-2	C12H12BD4F2NO2
tert-butyl 6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-3,4-dihydropyridine-1(2H)-carboxylate-2,2,3,3,4,4,5-d7
3-(3-(methoxy-d3)azetidin-1-yl-2,2,3,4,4-d5)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine-2,4,6-d3	2364586-70-7	C15H12BD11N2O3
2-(3-(methoxy-d3)azetidin-1-yl-2,2,3,4,4-d5)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyrimidine	2368223-20-3	C14H14BD8N3O3
2-((oxetan-3-yl-d5)oxy)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine	2364586-33-2	C14H15BD5NO4
2-((oxetan-3-yl-d5)oxy)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyrimidine	2364586-57-0	C13H14BD5N2O4
2-(2-(methyl-d3)piperidin-1-yl-2,3,3,4,4,5,5,6,6-d9)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine-3,5,6-d3	2368224-09-1	C17H12BD15N2O2
4-(2-(methyl-d3)piperidin-1-yl-2,3,3,4,4,5,5,6,6-d9)-2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine	2368224-25-1	C17H15BD12N2O2
4-(2,5-bis(methyl-d3)piperidin-1-yl-2,3,3,4,4,5,6,6-d8)-2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine-3,5,6-d3	2364573-02-2	C18H12BD17N2O2
3-(2-(methyl-d3)piperidin-1-yl-2,3,3,4,4,5,5,6,6-d9)-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine-2,4,6-d3	2368224-43-3	C17H12BD15N2O2
2-bromo-6-(3-(methoxy-d3)azetidin-1-yl-2,2,3,4,4-d5)pyridine-3,4,5-d3	2363786-52-9	C9BrD11N2O
4-bromo-2-(3-(methoxy-d3)azetidin-1-yl-2,2,3,4,4-d5)pyrimidine-5,6-d2	2363782-15-2	C8BrD10N3O
3-bromopyridin-4,5,6-d3-2-amine	2256713-40-1	C5H2BrD3N2
3-bromo-2-((oxetan-3-yl-d5)oxy)pyridine-4,5,6-d3	2363789-43-7	C8BrD8NO2
4-bromo-2-(oxetan-3-yloxy)pyridine-3,5,6-d3	2363786-80-3	C8H5BrD3NO2
6-((oxetan-3-yl-d5)oxy)pyridin-3,4,5-d3-2-amine	2363788-72-9	C8H2D8N2O2
3-(oxetan-3-yloxy)pyridin-2,5,6-d3-4-amine	2363783-78-0	C8H7D3N2O2
3-bromo-4-((oxetan-3-yl-d5)oxy)pyridine	2363780-10-1	C8H3BrD5NO2
4-((oxetan-3-yl-d5)oxy)pyridin-2,5,6-d3-3-amine	2363785-13-9	C8H2D8N2O2
3-bromo-6-((oxetan-3-yl-d5)oxy)pyridazine	2363787-38-4	C7H2BrD5N2O2
4-(oxetan-3-yloxy)pyrimidin-5,6-d2-2-amine	2363780-18-9	C7H7D2N3O2
5-bromo-2-((oxetan-3-yl-d5)oxy)pyrimidine-4,6-d2	2363789-15-3	C7BrD7N2O2
1-(5-bromopyrimidin-4-yl-2,6-d2)pyrrolidin-2,2,3,4,4,5,5-d7-3-ol	2363781-12-6	C8HBrD9N3O
1-(5-bromopyrimidin-2-yl-4,6-d2)azetidin-2,2,3,4,4-d5-3-ol	2363779-48-8	C7HBrD7N3O
1-(4-bromopyridin-3-yl-2,5,6-d3)azetidin-2,2,3,4,4-d5-3-ol	2363781-34-2	C8HBrD8N2O
3-(azetidin-1-yl-d6)-2-bromopyridine-4,5,6-d3	2363783-51-9	C8BrD9N2
2-(azetidin-1-yl-d6)-4-bromopyrimidine-5,6-d2	2363781-35-3	C7BrD8N3
5-bromo-2-(methyl-13C)thiazole	1227958-75-9	C4H4BrNS
1-(6-bromopyridazin-3-yl-4,5-d2)ethan-1-one	2363788-51-4	C6H3BrD2N2O
1-(4-bromopyrimidin-2-yl-5,6-d2)ethan-1-one-2,2,2-d3	2363787-05-5	C6BrD5N2O
1-(6-bromopyridin-2-yl)piperidin-2,2,3,3,4,5,5,6,6-d9-4-ol	2363780-32-7	C10H4BrD9N2O
1-(4-bromopyridin-2-yl-3,5,6-d3)piperidin-2,2,3,3,4,5,5,6,6-d9-4-ol	2363783-10-0	C10HBrD12N2O
3-bromo-2,4-difluoropyridine-5,6-d2	2645416-87-9	C5BrD2F2N
2,4-dibromo-6-(methyl-d3)pyridin-3-amine	2645412-86-6	C6H3Br2D3N2
2-bromo-4-(methyl-d3)pyrimidine	2518299-41-5	C5H2BrD3N2
2,3-dibromo-6-(methyl-d3)pyridine-4,5-d2	2645413-83-6	C6Br2D5N
2,6-bis(methyl-d3)pyridin-3-amine	2645417-17-8	C7H4D6N2
6-(methyl-d3)pyridazin-3(2H)-one-4,5-d2	2645417-34-9	C5HD5N2O
3-bromo-2-fluoro-5-(methyl-d3)pyridin-4-amine	2645419-65-2	C6H3BrD3FN2
4-aminopyridin-2(1H)-one-3,5,6-d3	2645416-24-4	C5H3D3N2O
3,5-bis(methyl-d3)pyridin-4-ol	2645412-23-1	C7H3D6NO