JP2013518910A - ジヒドロピリドフタラジノン誘導体を合成する方法 - Google Patents
ジヒドロピリドフタラジノン誘導体を合成する方法 Download PDFInfo
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- JP2013518910A JP2013518910A JP2012552143A JP2012552143A JP2013518910A JP 2013518910 A JP2013518910 A JP 2013518910A JP 2012552143 A JP2012552143 A JP 2012552143A JP 2012552143 A JP2012552143 A JP 2012552143A JP 2013518910 A JP2013518910 A JP 2013518910A
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- 238000000034 method Methods 0.000 title claims abstract description 80
- 230000002194 synthesizing effect Effects 0.000 title abstract 2
- 150000001875 compounds Chemical class 0.000 claims abstract description 111
- 230000008569 process Effects 0.000 claims abstract description 14
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 93
- 150000003839 salts Chemical class 0.000 claims description 47
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 30
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 29
- 239000003153 chemical reaction reagent Substances 0.000 claims description 29
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- 239000002253 acid Substances 0.000 claims description 24
- IKDUDTNKRLTJSI-UHFFFAOYSA-N hydrazine hydrate Chemical compound O.NN IKDUDTNKRLTJSI-UHFFFAOYSA-N 0.000 claims description 21
- 239000012442 inert solvent Substances 0.000 claims description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical group CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 claims description 15
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 13
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- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims description 12
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- JOXIMZWYDAKGHI-UHFFFAOYSA-N toluene-4-sulfonic acid Chemical compound CC1=CC=C(S(O)(=O)=O)C=C1 JOXIMZWYDAKGHI-UHFFFAOYSA-N 0.000 claims description 10
- WFDIJRYMOXRFFG-UHFFFAOYSA-N Acetic anhydride Chemical group CC(=O)OC(C)=O WFDIJRYMOXRFFG-UHFFFAOYSA-N 0.000 claims description 9
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- NAWXUBYGYWOOIX-SFHVURJKSA-N (2s)-2-[[4-[2-(2,4-diaminoquinazolin-6-yl)ethyl]benzoyl]amino]-4-methylidenepentanedioic acid Chemical compound C1=CC2=NC(N)=NC(N)=C2C=C1CCC1=CC=C(C(=O)N[C@@H](CC(=C)C(O)=O)C(O)=O)C=C1 NAWXUBYGYWOOIX-SFHVURJKSA-N 0.000 claims description 6
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- IUVKMZGDUIUOCP-BTNSXGMBSA-N quinbolone Chemical compound O([C@H]1CC[C@H]2[C@H]3[C@@H]([C@]4(C=CC(=O)C=C4CC3)C)CC[C@@]21C)C1=CCCC1 IUVKMZGDUIUOCP-BTNSXGMBSA-N 0.000 claims description 2
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- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 claims 1
- 125000000959 isobutyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])* 0.000 claims 1
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 claims 1
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- 125000001255 4-fluorophenyl group Chemical group [H]C1=C([H])C(*)=C([H])C([H])=C1F 0.000 abstract description 12
- 102000012338 Poly(ADP-ribose) Polymerases Human genes 0.000 abstract description 9
- 108010061844 Poly(ADP-ribose) Polymerases Proteins 0.000 abstract description 9
- 229920000776 Poly(Adenosine diphosphate-ribose) polymerase Polymers 0.000 abstract description 9
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- 125000001414 1,2,4-triazol-5-yl group Chemical group [H]N1N=C([H])N=C1[*] 0.000 abstract 1
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- -1 triazol-5-yl Chemical group 0.000 description 25
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 21
- 239000000243 solution Substances 0.000 description 19
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- NIYWPALNWVTHPJ-UHFFFAOYSA-N methyl 5-fluoro-2-[2-(2-methyl-1,2,4-triazol-3-yl)acetyl]-3-nitrobenzoate Chemical compound COC(=O)C1=CC(F)=CC([N+]([O-])=O)=C1C(=O)CC1=NC=NN1C NIYWPALNWVTHPJ-UHFFFAOYSA-N 0.000 description 13
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- HBAQYPYDRFILMT-UHFFFAOYSA-N 8-[3-(1-cyclopropylpyrazol-4-yl)-1H-pyrazolo[4,3-d]pyrimidin-5-yl]-3-methyl-3,8-diazabicyclo[3.2.1]octan-2-one Chemical class C1(CC1)N1N=CC(=C1)C1=NNC2=C1N=C(N=C2)N1C2C(N(CC1CC2)C)=O HBAQYPYDRFILMT-UHFFFAOYSA-N 0.000 description 9
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Abstract
【選択図】 なし
Description
本出願は、強力なポリ(ADP-リボース)ポリメラーゼ(PARP)阻害剤である、例えば5-フルオロ-8-(4-フルオロフェニル)-9-(1-メチル-1H-1,2,4-トリアゾール-5-イル)-8,9-ジヒドロ-2H-ピリド[4,3,2-de]フタラジン-3(7H)-オン及びその立体異性体などのジヒドロピリドフタラジノン誘導体を合成するための改良されたプロセス、並びに新規の合成の中間化合物を開示する。
ポリ(ADP-リボース)ポリメラーゼ(PARP)のファミリーには、約18種のタンパク質が含まれ、これらはすべて、その触媒ドメインにおけるある程度の相同性を示すが、その細胞機能は異なる(Ameらの文献、BioEssays.,26(8),882-893(2004))。PARP-1及びPARP-2は、PARP-1及びPARP-2の触媒活性がDNA鎖切断の発生によって刺激される点で、このファミリーのユニークなメンバーである。
本明細書で提供されるのは、式(1)に示す通りの5-フルオロ-8-(4-フルオロフェニル)-9-(1-メチル-1H-1,2,4-トリアゾール-5-イル)-8,9-ジヒドロ-2H-ピリド[4,3,2-de]フタラジン-3(7H)-オン、及び式(1a)及び(1b)に示す通りのその鏡像異性体化合物:
PARPは、DNA修復を容易にすること、RNA転写を制御すること、細胞死を仲介すること、及び免疫応答を調節することにおける基本的役割を有する。PARP阻害剤は、疾患の多数のモデルにおける、特に、虚血再灌流障害、炎症性疾患、変性疾患のモデルにおける有効性、細胞障害性化合物の上記有害作用からの保護、及び細胞障害性の癌治療の増強作用を示す。PARP阻害剤は、心筋梗塞、脳卒中、他の神経損傷、臓器移植、並びに眼、腎臓、消化管、及び骨格筋の再潅流のモデルにおける虚血再灌流障害の予防に有効である。PARP阻害剤は、関節炎、痛風、炎症性腸疾患、MS及びアレルギー性脳炎などのCNS炎症、敗血症、敗血症性ショック、出血性ショック、肺線維症、並びにブドウ膜炎などの、炎症性疾患に有効である。PARP阻害剤はまた、糖尿病及びパーキンソン病を含めた変性疾患のいくつかのモデルにおける有益性も示す。PARP阻害剤は、アセトアミノフェン過剰後の肝臓毒性、ドキソルビシン及び白金ベースの抗新生物薬由来の心臓及び腎臓毒性、並びにスルファマスタードによる皮膚損傷を改善する。様々な癌モデルでは、PARP阻害剤は、癌細胞のアポトーシスを増大させること、腫瘍増殖を制限すること、転移を減少させること、及び腫瘍を有する動物の生存を延長させることによって、放射線及び化学療法を増強することが示されている。
(Z)-6-フルオロ-3-((1-メチル-1H-1,2,4-トリアゾール-5-イル)メチレン)-4-ニトロイソベンゾフラン-1(3H)-オン(3)
5-フルオロ-2-(2-(1-メチル-1H-1,2,4-トリアゾール-5-イル)アセチル)-3-ニトロ安息香酸メチル(4)
(Z)-6-フルオロ-3-((1-メチル-1H-1,2,4-トリアゾール-3-イル)メチレン)-4-ニトロイソベンゾフラン-1(3H)-オン(3)(177g、0.6mol、1.0当量)と、HCl(メタノール中2N、3L、6mol、10当量)を、自動撹拌装置、温度計、及び出/入口を備えた5L 3頸フラスコに装入した。反応混合物を、室温で25時間撹拌した。この反応混合物を、HPLCによってモニタリングし、化合物(3)が0.8%残存していることが示された。この反応混合物を、真空中で、乾燥するまで40℃で濃縮し、黄色固体として5-フルオロ-2-(2-(1-メチル-1H-1,2,4-トリアゾール-3-イル)アセチル)-3-ニトロ安息香酸メチル・塩酸塩(4)を得た(201g、収率:93.4%)。これを、さらなる精製を行わずに次のステップに使用した。
実施例2Aに例示した手順に代わる仕上げ手順は次の通りである。反応混合物を乾燥するまで蒸発させる代わりに、2体積に濃縮し、それに続いて、12体積のTHF、次いで12体積のヘプタンを用いて溶媒交換を行った。このスラリー混合物を2体積に濃縮し、濾過して該生成物が与えられた。このようにして、1.8キログラムの(Z)-6-フルオロ-3-((1-メチル-1H-1,2,4-トリアゾール-3-イル)メチレン)-4-ニトロイソベンゾフラン-1(3H)-オン(3)によって、2.15キログラム(収率96.4%)の該生成物5-フルオロ-2-(2-(1-メチル-1H-1,2,4-トリアゾール-3-イル)アセチル)-3-ニトロ安息香酸メチル・塩酸塩(4)が与えられた。
7-フルオロ-2-(4-フルオロフェニル)-3-(1-メチル-1H-1,2,4-トリアゾール-5-イル)-4-オキソ-1,2,3,4-テトラヒドロキノリン-5-カルボン酸メチル(5)
溶媒テトラヒドロフラン(30mL)とMeOH(5mL)との混合物に、5-フルオロ-2-(2-(1-メチル-1H-1,2,4-トリアゾール-5-イル)アセチル)-3-ニトロ安息香酸メチル(4)(5g、15.5ミリモル、1当量)と4-フルオロベンズアルデヒド(3.6g、29ミリモル、1.87当量)とを入れた懸濁液に、塩化チタン(III)(2N塩酸の20% w/w溶液)(80mL、6当量)を、室温で撹拌しながら滴加した。反応混合物を、30〜50℃で2時間撹拌させた。次いで、この混合物を、水(160mL)で希釈し、得られた溶液を、酢酸エチル(100mL×4)で抽出した。合わせた有機層を、飽和NaHCO3(50mL×3)及びNaHSO3水溶液(100mL×3)で洗浄し、Na2SO4によって乾燥させ、乾燥するまで濃縮した。これによって未精製の固体が提供され、これを石油エーテル(120mL)で洗浄して、黄色固体として表題化合物を得た(5.9g、収率: 95%、純度: 97%)。
実施例3Aに例示した手順に代わる仕上げ手順は次の通りである。反応の完了後、混合物を、水で希釈せずに酢酸イソプロピル(20体積×4)で抽出した。この生成物を、ヘプタンを用いる酢酸イソプロピルの溶媒交換、それに続くMTBEを用いる再スラリー化及び濾過によって単離した。このようにして、3キログラムの5-フルオロ-2-(2-(1-メチル-1H-1,2,4-トリアゾール-5-イル)アセチル)-3-ニトロ安息香酸メチル(4)によって、2.822キログラムの表題化合物(5)が提供された(収率81%)。
メタノール(0.75mL)とテトラヒドロフラン(4.5mL)に、5-フルオロ-2-(2-(1-メチル-1H-1,2,4-トリアゾール-5-イル)アセチル)-3-ニトロ安息香酸メチル(4)(580mg、2ミリモル)と4-フルオロベンズアルデヒド(488mg、4ミリモル)とを入れた撹拌溶液に、濃HCl溶液(w/w 37%、6mL)を加え、次いで、この反応系に、粉末状の還元Fe(672mg、12ミリモル)をゆっくりと加えた。添加が完了した後、得られた混合物を60℃に加熱し、3時間この温度に維持した。LC-MSによってモニタリングされる通りの出発材料(4)の消失後、反応混合物を酢酸エチル(30mL)と水(30mL)とに分配し、水相を酢酸エチル(20mL×3)で抽出した。合わせた有機相をNa2SO4で乾燥させ、真空中で濃縮し、カラムクロマトグラフィー(酢酸エチル:石油エーテル=1:1)によって精製し、淡黄色固体として表題化合物(5)が与えられた(300mg、収率40%)。
メタノール(0.75mL)とテトラヒドロフラン(4.5mL)に、5-フルオロ-2-(2-(1-メチル-1H-1,2,4-トリアゾール-5-イル)アセチル)-3-ニトロ安息香酸メチル(4)(580mg、2ミリモル)と4-フルオロベンズアルデヒド(488mg、4ミリモル)とを入れた撹拌溶液に、SnCl2(2.28g、12ミリモル)と濃HCl(w/w 37%、6mL)を加え、得られた混合物を、出発材料(4)の消失と該生成物の約50%形成がLC-MSによって示されるまで、45℃で3時間反応させた。次いで、この混合物を、酢酸エチル(30mL)と水(30mL)とに分配し、水相を酢酸エチル(20mL×3)で抽出した。合わせた有機相をNa2SO4で乾燥させ、真空中で濃縮し、カラムクロマトグラフィー(酢酸エチル:石油エーテル=1:1)によって精製し、淡黄色固体として表題化合物(5)が与えられた(10mg、収率1.3%)。
メタノール(20mL)と酢酸(1mL)に、5-フルオロ-2-(2-(1-メチル-1H-1,2,4-トリアゾール-5-イル)アセチル)-3-ニトロ安息香酸メチル(4)(580mg、2ミリモル)と4-フルオロベンズアルデヒド(488mg、4ミリモル)とを入れた溶液を、触媒量の10% Pd/C(212mg、0.2ミリモル)の存在下で、水素(1バール)下で室温で24時間撹拌した。反応が完了した後、Celiteのパッドを通過させる濾過によって触媒を除去し、溶媒を真空中で除去し、残渣をカラムクロマトグラフィー(酢酸エチル:石油エーテル=1:1)によって精製し、淡黄色固体として表題化合物(5)が与えられた(63mg、収率8%)。
5-フルオロ-8-(4-フルオロフェニル)-9-(1-メチル-1H-1,2,4-トリアゾール-5-イル)-8,9-ジヒドロ-2H-ピリド[4,3,2-de]フタラジン-3(7H)-オン(1)
5-アミノ-7-フルオロ-4-((1-メチル-1H-1,2,4-トリアゾール-5-イル)メチル)フタラジン-1(2H)-オン
(E)-7-フルオロ-5-(4-フルオロベンジリデンアミノ)-4-((1-メチル-1H-1,2,4-トリアゾール-5-イル)メチル)フタラジン-1(2H)-オン
5-フルオロ-8-(4-フルオロフェニル)-9-(1-メチル-1H-1,2,4-トリアゾール-5-イル)-8,9-ジヒドロ-2H-ピリド[4,3,2-de]フタラジン-3(7H)-オン(1)
5-フルオロ-2-(3-(4-フルオロフェニル)-2-(1-メチル-1H-1,2,4-トリアゾール-5-イル)アクリロイル)-3-ニトロ安息香酸(E)-メチル(9)
7-フルオロ-2-(4-フルオロフェニル)-1-ヒドロキシ-3-(1-メチル-1H-1,2,4-トリアゾール-5-イル)-4-オキソ-1,2,3,4-テトラヒドロキノリン-5-カルボン酸メチル(10)
7-フルオロ-2-(4-フルオロフェニル)-3-(1-メチル-1H-1,2,4-トリアゾール-5-イル)-4-オキソ-1,2,3,4-テトラヒドロキノリン-5-カルボン酸メチル(5)
7-フルオロ-2-(4-フルオロフェニル)-3-(1-メチル-1H-1,2,4-トリアゾール-5-イル)-4-オキソ-1,2,3,4-テトラヒドロキノリン-5-カルボン酸メチル(5)
(8R,9S)-5-フルオロ-8-(4-フルオロフェニル)-9-(1-メチル-1H-1,2,4-トリアゾール-5-イル)-8,9-ジヒドロ-2H-ピリド[4,3,2-de]フタラジン-3(7H)-オン(1a)及び(8S,9R)-5-フルオロ-8-(4-フルオロフェニル)-9-(1-メチル-1H-1,2,4-トリアゾール-5-イル)-8,9-ジヒドロ-2H-ピリド[4,3,2-de]フタラジン-3(7H)-オン(1b)
7-フルオロ-2-(4-フルオロフェニル)-3-(1-メチル-1H-1,2,4-トリアゾール-5-イル)-4-オキソ-1,2,3,4-テトラヒドロキノリン-5-カルボン酸(2R,3R)-メチル(6a)及び7-フルオロ-2-(4-フルオロフェニル)-3-(1-メチル-1H-1,2,4-トリアゾール-5-イル)-4-オキソ-1,2,3,4-テトラヒドロキノリン-5-カルボン酸(2S,3S)-メチル(6b)
化合物(5)のキラル分割を、移動相として流速65g/分のCO2/MeOH(80/20)を使用する、CHIRALPAK(登録商標)IC 3cm(I.D.)×25cm、5μmカラムを用いるSFCユニット上で、35℃のカラム温度を維持しながら、かつ254nmの検出UV波長を用いて実施した。このようにして、メタノール溶液中の化合物(5)のラセミ体(5g)が分割されて、CHIRALPAK(登録商標)IC 0.46cm×15cmカラムと移動相としての流速2mL/分のCO2/MeOH(80/20)とを使用して分析した時に保持時間がそれぞれ2.35分(2.2g、88%回収率、>98% ee)と4.25分(2.3g、92%回収率、>98% ee)である2つの鏡像異性体がもたらされた。
化合物(5)のキラル分割を、移動相として流速200mL/分のCO2/MeOH(75/25)を使用する、CHIRALPAK(登録商標)IC 5cm(I.D.)×25cm、5μmカラムを用いるSFCユニット上で、40℃のカラム温度を維持しながら、かつ255nmの検出UV波長を用いて実施した。このようにして、メタノール溶液中の化合物(5)(1.25kg)のラセミ体が分割されて、約83%の収率及び97.4%の純度で、2つの鏡像異性体がもたらされた。
あるいは、分離は、CHIRALPAK(登録商標)ICカラムと移動相としてのアセトニトリルとを用いる疑似移動床(SMB)ユニット上で達成することもできる。2つの鏡像異性体の保持時間は、それぞれ3.3及び4.1分である。ある実施態様では、生産性は、6kg供給/日/kg(キラル固定相)を超えることができる。
(8R,9S)-5-フルオロ-8-(4-フルオロフェニル)-9-(1-メチル-1H-1,2,4-トリアゾール-5-イル)-8,9-ジヒドロ-2H-ピリド[4,3,2-de]フタラジン-3(7H)-オン(1a)及び(8S,9R)-5-フルオロ-8-(4-フルオロフェニル)-9-(1-メチル-1H-1,2,4-トリアゾール-5-イル)-8,9-ジヒドロ-2H-ピリド[4,3,2-de]フタラジン-3(7H)-オン(1b)
7-フルオロ-2-(4-フルオロフェニル)-3-(1-メチル-1H-1,2,4-トリアゾール-5-イル)-4-オキソ-1,2,3,4-テトラヒドロキノリン-5-カルボン酸(2R,3R)-メチル(6a)又は7-フルオロ-2-(4-フルオロフェニル)-3-(1-メチル-1H-1,2,4-トリアゾール-5-イル)-4-オキソ-1,2,3,4-テトラヒドロキノリン-5-カルボン酸(2S,3S)-メチル(6b)(400mg、1.0ミリモル)のエタノール(8.0mL)溶液に、ヒドラジン一水和物(85%、2.0mL)を加え、この溶液を、室温で2時間撹拌した。次いで、得られた溶液を、2mLの体積に濃縮し、濾過し、生じたケークをエタノール(1mL)で洗浄した。これによって、真空中で50℃で乾燥させた後、白色固体として表題化合物が提供された(209mg、収率55%)。
7-フルオロ-2-(4-フルオロフェニル)-3-(1-メチル-1H-1,2,4-トリアゾール-5-イル)-4-オキソ-1,2,3,4-テトラヒドロキノリン-5-カルボン酸(2R,3R)-メチル(6a)又は7-フルオロ-2-(4-フルオロフェニル)-3-(1-メチル-1H-1,2,4-トリアゾール-5-イル)-4-オキソ-1,2,3,4-テトラヒドロキノリン-5-カルボン酸(2S,3S)-メチル(6b)(446g)のアセトニトリル(10体積)溶液に、ヒドラジン一水和物(2.9当量)を加え、この溶液を、室温で2時間撹拌した。次いで、得られた溶液を、2mLの体積に濃縮し、濾過した。未精製の生成物を、15〜16℃の水(3〜5体積)で再スラリー化した。これによって、真空中で50℃で乾燥させた後、白色固体として表題化合物が提供された(329g、収率77%、純度99.93%)。
Claims (53)
- 前記還元試薬が、金属ハロゲン化物である、請求項2記載の方法。
- 前記金属ハロゲン化物が、TiCl3又はSnCl2である、請求項3記載の方法。
- 前記還元試薬が、粉末状のFeである、請求項2記載の方法。
- 前記還元試薬が、金属触媒の存在下で、水素である、請求項2記載の方法。
- 前記金属触媒が、パラジウム、ニッケル、及び白金からなる群から選択される、請求項6記載の方法。
- 前記還元試薬がMCNBH3(式中、Mは、Li、Na、K、及びBu4Nからなる群から選択される)である、請求項2記載の方法。
- 前記酸が、HCl、HBr、HI、H2SO4、及びH3PO4からなる群から選択される無機酸である、請求項2記載の方法。
- 前記酸が、ギ酸、酢酸、プロピオン酸、酪酸、トリフルオロ酢酸、p-トルエンスルホン酸、及びメチルスルホン酸からなる群から選択される有機酸である、請求項2記載の方法。
- 前記ルイス酸が、AlCl3、TiCl4、SnCl4、及びZnCl2からなる群から選択される、請求項2記載の方法。
- 前記縮合条件が、約80から約90℃の温度で水捕捉剤の存在下で塩基を使用することを含む、請求項13記載の方法。
- 前記塩基がトリエチルアミンであり、前記水捕捉剤が無水酢酸である、請求項14記載の方法。
- 前記塩基が、金属炭酸塩又は金属水素化物である、請求項16記載の方法。
- 前記金属炭酸塩が、Na2CO3、K2CO3、及びCs2CO3からなる群から選択される、請求項17記載の方法。
- 前記金属水素化物が、NaH又はKHである、請求項17記載の方法。
- 前記酸が、酢酸、トリフルオロ酢酸、HCl、及びp-トルエンスルホン酸からなる群から選択される、請求項21記載の方法。
- 前記還元試薬が、水素化ホウ素金属である、請求項23記載の方法。
- 前記水素化ホウ素金属が、NaBH4又はNaCNBH3である、請求項24記載の方法。
- 前記還元試薬が、粉末状のFeである、請求項23記載の方法。
- 前記還元試薬が、TiCl3又はSnCl2である、請求項23記載の方法。
- 前記還元試薬が、遷移金属の存在下で、水素である、請求項23記載の方法。
- 前記遷移金属が、パラジウム、ニッケル、及び白金からなる群から選択される、請求項28記載の方法。
- 前記還元試薬が、粉末状のFeである、請求項30記載の方法。
- 前記還元試薬が、水素化ホウ素金属である、請求項30記載の方法。
- 前記水素化ホウ素金属が、NaBH4である、請求項32記載の方法。
- 前記還元試薬が、遷移金属の存在下で、水素である、請求項30記載の方法。
- 前記遷移金属が、パラジウム、ニッケル、及び白金からなる群から選択される、請求項34記載の方法。
- 前記還元試薬が、周囲温度で大気圧下で、水素である、請求項36記載の方法。
- 前記キラル分割が、超臨界流体クロマトグラフィー(SFC)ユニットによって達成される、請求項38記載の方法。
- キラル固定相の使用をさらに含み、ここで、該キラル固定相がCHIRALPAKカラムである、請求項38記載の方法。
- 前記CHIRALPAKカラムが、AD、IA、OJ、及びODカラムからなる群から選択される、請求項40記載の方法。
- 移動相の使用をさらに含み、ここで、該移動相がCO2及びアルコールを含み、ここで、該アルコールがMeOH又はEtOHである、請求項38記載の方法。
- 前記キラル分割が、超臨界流体クロマトグラフィー(SFC)ユニットを用いて達成される、請求項44記載の方法。
- キラル固定相の使用をさらに含み、ここで、該キラル固定相がCHIRALPAKカラムである、請求項45記載の方法。
- 前記CHIRALPAKカラムが、IC又はAYカラムである、請求項46記載の方法。
- 移動相の使用をさらに含み、ここで、該移動相がCO2及びMeOHを含む、請求項45記載の方法。
- 前記キラル分割が、疑似移動床クロマトグラフィー(SMB)ユニットを用いて達成される、請求項44記載の方法。
- キラル固定相の使用をさらに含み、ここで、該キラル固定相がCHIRALPAKカラムである、請求項49記載の方法。
- 前記CHIRALPAKカラムが、ICカラムである、請求項50記載の方法。
- 移動相の使用をさらに含み、ここで、該移動相がアセトニトリルである、請求項49記載の方法。
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