JP5524221B2 - 合成中間体としてのチアゾリル−ピラゾロピリミジン化合物および関連合成方法 - Google Patents
合成中間体としてのチアゾリル−ピラゾロピリミジン化合物および関連合成方法 Download PDFInfo
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- JP5524221B2 JP5524221B2 JP2011530133A JP2011530133A JP5524221B2 JP 5524221 B2 JP5524221 B2 JP 5524221B2 JP 2011530133 A JP2011530133 A JP 2011530133A JP 2011530133 A JP2011530133 A JP 2011530133A JP 5524221 B2 JP5524221 B2 JP 5524221B2
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- 238000010189 synthetic method Methods 0.000 title claims description 10
- 239000000543 intermediate Substances 0.000 title description 4
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 90
- YNAVUWVOSKDBBP-UHFFFAOYSA-N Morpholine Chemical compound C1COCCN1 YNAVUWVOSKDBBP-UHFFFAOYSA-N 0.000 claims description 42
- 150000001875 compounds Chemical class 0.000 claims description 29
- 239000002904 solvent Substances 0.000 claims description 29
- 150000003839 salts Chemical class 0.000 claims description 26
- JWUJQDFVADABEY-UHFFFAOYSA-N 2-methyltetrahydrofuran Chemical compound CC1CCCO1 JWUJQDFVADABEY-UHFFFAOYSA-N 0.000 claims description 24
- DGEZNRSVGBDHLK-UHFFFAOYSA-N [1,10]phenanthroline Chemical compound C1=CN=C2C3=NC=CC=C3C=CC2=C1 DGEZNRSVGBDHLK-UHFFFAOYSA-N 0.000 claims description 21
- 238000000034 method Methods 0.000 claims description 21
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 claims description 16
- 229910052802 copper Inorganic materials 0.000 claims description 15
- 239000010949 copper Substances 0.000 claims description 15
- ICETWLGKJXCIDX-UHFFFAOYSA-N 2,4-dichloro-1,3-thiazole Chemical compound ClC1=CSC(Cl)=N1 ICETWLGKJXCIDX-UHFFFAOYSA-N 0.000 claims description 14
- 229910021591 Copper(I) chloride Inorganic materials 0.000 claims description 14
- MHABMANUFPZXEB-UHFFFAOYSA-N O-demethyl-aloesaponarin I Natural products O=C1C2=CC=CC(O)=C2C(=O)C2=C1C=C(O)C(C(O)=O)=C2C MHABMANUFPZXEB-UHFFFAOYSA-N 0.000 claims description 14
- OXBLHERUFWYNTN-UHFFFAOYSA-M copper(I) chloride Chemical group [Cu]Cl OXBLHERUFWYNTN-UHFFFAOYSA-M 0.000 claims description 14
- -1 copper halide Chemical class 0.000 claims description 12
- 239000003054 catalyst Substances 0.000 claims description 11
- 125000004123 n-propyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])* 0.000 claims description 11
- 239000003446 ligand Substances 0.000 claims description 10
- ROFVEXUMMXZLPA-UHFFFAOYSA-N Bipyridyl Chemical compound N1=CC=CC=C1C1=CC=CC=N1 ROFVEXUMMXZLPA-UHFFFAOYSA-N 0.000 claims description 8
- RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-Dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 claims description 3
- 150000007529 inorganic bases Chemical class 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 description 36
- 239000000047 product Substances 0.000 description 18
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 9
- 125000003538 pentan-3-yl group Chemical group [H]C([H])([H])C([H])([H])C([H])(*)C([H])([H])C([H])([H])[H] 0.000 description 9
- 239000011541 reaction mixture Substances 0.000 description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 8
- 239000000203 mixture Substances 0.000 description 8
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 7
- IMNFDUFMRHMDMM-UHFFFAOYSA-N N-Heptane Chemical compound CCCCCCC IMNFDUFMRHMDMM-UHFFFAOYSA-N 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 6
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 6
- 239000002002 slurry Substances 0.000 description 6
- 239000007787 solid Substances 0.000 description 6
- 229910021595 Copper(I) iodide Inorganic materials 0.000 description 5
- 239000012044 organic layer Substances 0.000 description 5
- 238000003756 stirring Methods 0.000 description 5
- YGIPXMSQGKGPQW-UHFFFAOYSA-N 2,4-dichloro-5-(2,5-dimethyl-7-pentan-3-ylpyrazolo[1,5-a]pyrimidin-3-yl)-1,3-thiazole Chemical compound CC1=NN2C(C(CC)CC)=CC(C)=NC2=C1C=1SC(Cl)=NC=1Cl YGIPXMSQGKGPQW-UHFFFAOYSA-N 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 4
- DKPFZGUDAPQIHT-UHFFFAOYSA-N butyl acetate Chemical compound CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 description 4
- 239000012141 concentrate Substances 0.000 description 4
- 235000019439 ethyl acetate Nutrition 0.000 description 4
- 238000004128 high performance liquid chromatography Methods 0.000 description 4
- 238000010992 reflux Methods 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- KQJDDNCSNLUGAK-UHFFFAOYSA-N 3-iodo-2,5-dimethyl-7-pentan-3-ylpyrazolo[1,5-a]pyrimidine Chemical compound CCC(CC)C1=CC(C)=NC2=C(I)C(C)=NN12 KQJDDNCSNLUGAK-UHFFFAOYSA-N 0.000 description 3
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 3
- 108091005471 CRHR1 Proteins 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 0 Cc1n[n]2c(C(*)*)cc(C)nc2c1-c([s]c(Cl)n1)c1Cl Chemical compound Cc1n[n]2c(C(*)*)cc(C)nc2c1-c([s]c(Cl)n1)c1Cl 0.000 description 3
- 102000012289 Corticotropin-Releasing Hormone Human genes 0.000 description 3
- 108010022152 Corticotropin-Releasing Hormone Proteins 0.000 description 3
- 239000000055 Corticotropin-Releasing Hormone Substances 0.000 description 3
- 238000010268 HPLC based assay Methods 0.000 description 3
- CZPWVGJYEJSRLH-UHFFFAOYSA-N Pyrimidine Chemical compound C1=CN=CN=C1 CZPWVGJYEJSRLH-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 238000002425 crystallisation Methods 0.000 description 3
- 230000008025 crystallization Effects 0.000 description 3
- 239000000706 filtrate Substances 0.000 description 3
- SKTCDJAMAYNROS-UHFFFAOYSA-N methoxycyclopentane Chemical compound COC1CCCC1 SKTCDJAMAYNROS-UHFFFAOYSA-N 0.000 description 3
- 238000000634 powder X-ray diffraction Methods 0.000 description 3
- 239000000376 reactant Substances 0.000 description 3
- 239000002464 receptor antagonist Substances 0.000 description 3
- 229940044551 receptor antagonist Drugs 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- 208000007848 Alcoholism Diseases 0.000 description 2
- FXHOOIRPVKKKFG-UHFFFAOYSA-N N,N-Dimethylacetamide Chemical compound CN(C)C(C)=O FXHOOIRPVKKKFG-UHFFFAOYSA-N 0.000 description 2
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000005576 amination reaction Methods 0.000 description 2
- 239000000010 aprotic solvent Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- 239000006184 cosolvent Substances 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 208000015706 neuroendocrine disease Diseases 0.000 description 2
- 239000002858 neurotransmitter agent Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 description 2
- 208000020016 psychiatric disease Diseases 0.000 description 2
- 230000035484 reaction time Effects 0.000 description 2
- 238000001308 synthesis method Methods 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- XVAWSBAQNIXMIO-UHFFFAOYSA-N tildacerfont Chemical compound CC1=NN2C(C(CC)CC)=CC(C)=NC2=C1C(=C(N=1)Cl)SC=1N1CCOCC1 XVAWSBAQNIXMIO-UHFFFAOYSA-N 0.000 description 2
- 238000010626 work up procedure Methods 0.000 description 2
- YDTWIPVIMWBKEJ-UHFFFAOYSA-N 2,3-dimethylpyrazolo[1,5-a]pyrimidine Chemical compound C1=CC=NC2=C(C)C(C)=NN21 YDTWIPVIMWBKEJ-UHFFFAOYSA-N 0.000 description 1
- WSTRPMKCJAVLEW-UHFFFAOYSA-N 2,5-dimethylpyrazolo[1,5-a]pyrimidine Chemical compound N1=C(C)C=CN2N=C(C)C=C21 WSTRPMKCJAVLEW-UHFFFAOYSA-N 0.000 description 1
- UJERZSKAWJGDJJ-UHFFFAOYSA-N 4-[4-chloro-5-(7-heptan-4-yl-2,5-dimethylpyrazolo[1,5-a]pyrimidin-3-yl)-1,3-thiazol-2-yl]morpholine Chemical compound CC1=NN2C(C(CCC)CCC)=CC(C)=NC2=C1C(=C(N=1)Cl)SC=1N1CCOCC1 UJERZSKAWJGDJJ-UHFFFAOYSA-N 0.000 description 1
- 208000019901 Anxiety disease Diseases 0.000 description 1
- 101000957724 Catostomus commersonii Corticoliberin-1 Proteins 0.000 description 1
- 229910021589 Copper(I) bromide Inorganic materials 0.000 description 1
- JPVYNHNXODAKFH-UHFFFAOYSA-N Cu2+ Chemical compound [Cu+2] JPVYNHNXODAKFH-UHFFFAOYSA-N 0.000 description 1
- 206010013654 Drug abuse Diseases 0.000 description 1
- 239000005909 Kieselgur Substances 0.000 description 1
- QHOOZMNSJJPZRK-UHFFFAOYSA-N O1CCOCC1.N1=CN=CC=C1 Chemical compound O1CCOCC1.N1=CN=CC=C1 QHOOZMNSJJPZRK-UHFFFAOYSA-N 0.000 description 1
- 208000007271 Substance Withdrawal Syndrome Diseases 0.000 description 1
- 206010001584 alcohol abuse Diseases 0.000 description 1
- 201000007930 alcohol dependence Diseases 0.000 description 1
- 208000025746 alcohol use disease Diseases 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 239000005557 antagonist Substances 0.000 description 1
- 230000036506 anxiety Effects 0.000 description 1
- 238000006254 arylation reaction Methods 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000004556 brain Anatomy 0.000 description 1
- 239000012267 brine Substances 0.000 description 1
- FJDQFPXHSGXQBY-UHFFFAOYSA-L caesium carbonate Chemical compound [Cs+].[Cs+].[O-]C([O-])=O FJDQFPXHSGXQBY-UHFFFAOYSA-L 0.000 description 1
- 229910000024 caesium carbonate Inorganic materials 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 229910001431 copper ion Inorganic materials 0.000 description 1
- ORTQZVOHEJQUHG-UHFFFAOYSA-L copper(II) chloride Chemical compound Cl[Cu]Cl ORTQZVOHEJQUHG-UHFFFAOYSA-L 0.000 description 1
- 239000012043 crude product Substances 0.000 description 1
- 229940045803 cuprous chloride Drugs 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 238000000113 differential scanning calorimetry Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000012456 homogeneous solution Substances 0.000 description 1
- 239000000601 hypothalamic hormone Substances 0.000 description 1
- 229940043650 hypothalamic hormone Drugs 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- LZWQNOHZMQIFBX-UHFFFAOYSA-N lithium;2-methylpropan-2-olate Chemical compound [Li+].CC(C)(C)[O-] LZWQNOHZMQIFBX-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003471 mutagenic agent Substances 0.000 description 1
- 231100000707 mutagenic chemical Toxicity 0.000 description 1
- 230000000269 nucleophilic effect Effects 0.000 description 1
- 239000002798 polar solvent Substances 0.000 description 1
- LPNYRYFBWFDTMA-UHFFFAOYSA-N potassium tert-butoxide Chemical compound [K+].CC(C)(C)[O-] LPNYRYFBWFDTMA-UHFFFAOYSA-N 0.000 description 1
- FVSKHRXBFJPNKK-UHFFFAOYSA-N propionitrile Chemical compound CCC#N FVSKHRXBFJPNKK-UHFFFAOYSA-N 0.000 description 1
- 150000003230 pyrimidines Chemical class 0.000 description 1
- 239000013074 reference sample Substances 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 1
- 208000011117 substance-related disease Diseases 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- LMBFAGIMSUYTBN-MPZNNTNKSA-N teixobactin Chemical compound C([C@H](C(=O)N[C@@H]([C@@H](C)CC)C(=O)N[C@@H](CO)C(=O)N[C@H](CCC(N)=O)C(=O)N[C@H]([C@@H](C)CC)C(=O)N[C@@H]([C@@H](C)CC)C(=O)N[C@@H](CO)C(=O)N[C@H]1C(N[C@@H](C)C(=O)N[C@@H](C[C@@H]2NC(=N)NC2)C(=O)N[C@H](C(=O)O[C@H]1C)[C@@H](C)CC)=O)NC)C1=CC=CC=C1 LMBFAGIMSUYTBN-MPZNNTNKSA-N 0.000 description 1
- 125000004496 thiazol-5-yl group Chemical group S1C=NC=C1* 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D487/00—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, not provided for by groups C07D451/00 - C07D477/00
- C07D487/02—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, not provided for by groups C07D451/00 - C07D477/00 in which the condensed system contains two hetero rings
- C07D487/04—Ortho-condensed systems
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/33—Heterocyclic compounds
- A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
- A61K31/495—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with two or more nitrogen atoms as the only ring heteroatoms, e.g. piperazine or tetrazines
- A61K31/505—Pyrimidines; Hydrogenated pyrimidines, e.g. trimethoprim
- A61K31/519—Pyrimidines; Hydrogenated pyrimidines, e.g. trimethoprim ortho- or peri-condensed with heterocyclic rings
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P25/00—Drugs for disorders of the nervous system
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P25/00—Drugs for disorders of the nervous system
- A61P25/24—Antidepressants
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P25/00—Drugs for disorders of the nervous system
- A61P25/30—Drugs for disorders of the nervous system for treating abuse or dependence
- A61P25/32—Alcohol-abuse
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P25/00—Drugs for disorders of the nervous system
- A61P25/30—Drugs for disorders of the nervous system for treating abuse or dependence
- A61P25/36—Opioid-abuse
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D417/00—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for by group C07D415/00
- C07D417/14—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for by group C07D415/00 containing three or more hetero rings
Landscapes
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Pharmacology & Pharmacy (AREA)
- Animal Behavior & Ethology (AREA)
- Veterinary Medicine (AREA)
- Public Health (AREA)
- General Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Medicinal Chemistry (AREA)
- Addiction (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Engineering & Computer Science (AREA)
- General Chemical & Material Sciences (AREA)
- Neurology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Biomedical Technology (AREA)
- Neurosurgery (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Psychiatry (AREA)
- Pain & Pain Management (AREA)
- Epidemiology (AREA)
- Nitrogen Condensed Heterocyclic Rings (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems (AREA)
- Plural Heterocyclic Compounds (AREA)
Description
(i)以下の式IIIの化合物またはその塩を、
(ii)式Iの化合物を、K2CO3の存在下で、モルホリンまたはその塩と反応させるステップを含む。
(i)以下の式の化合物またはその塩を、
を含む方法を提供する。
(i)以下の式の化合物またはその塩を、
を含む方法を提供する。
を含む方法を提供する。
CPMEは、シクロペンチルメチルエーテルを意味する。
DMACは、N,N−ジメチルアセトアミドを意味する。
DMFは、ジメチルホルムアミドを意味する。
EtOAcは、酢酸エチルを意味する。
2−MeTHFは、2−メチルテトラヒドロフランを意味する。
2−MeTHF/DMAC系は、約70/30および約80/20の比の共溶媒系における2−メチルテトラヒドロフランおよびN,N−ジメチルアセトアミドを意味する。
n−BuOAcは、n−酢酸ブチルを意味する。
XRPDは、X線粉末回折を意味する。
DSCは、示差走査熱量測定を意味する。
実施例1の反応を種々の他の触媒、リガンド、塩基および溶媒で実施し、それらが、7−(1−エチル−プロピル)−3−(2,4−ジクロロ−チアゾール−5−イル)−2,5−ジメチル−ピラゾロ[1,5−a]ピリミジンの産生に対して以下の効果を有することを見出した。(表1〜4を参照のこと)。
7−(1−エチル−プロピル)−3−(2,4−ジクロロ−チアゾール−5−イル)−2,5−ジメチル−ピラゾロ[1,5−a]ピリミジン(11.64mmol)を、100mLの3つ口丸底フラスコに入れ、続いて2−プロパノール(16mL,3.72容量)を加える。黄褐色のスラリーを約20℃にて5分間攪拌する。次いで、モルホリン(3.3g,37.84mmol)を2〜5分にわたって加える。内容物を6時間還流する。スラリーを25℃まで冷却する。2−プロパノール(32mL,7.44容量)および水(8.6mL,2.0容量)を加え、混合物を70〜75℃まで加熱し、濾過し、大気圧にて約9容量まで濃縮する。透明な溶液を55℃まで徐々に冷却し、0.5mLの2−プロパノール中でスラリーにした0.06gの結晶の7−(1−エチル−プロピル)−3−(4−クロロ−2−モルホリン−4−イル−チアゾール−5−イル)−2,5−ジメチル−ピラゾロ[1,5−a]ピリミジンの種晶を加え、さらなる0.5mLの2−プロパノールでリンスし、結晶化フラスコに加える。スラリーを0〜5℃まで冷却し、1時間維持し、濾過し、生成物を2−プロパノール(9mL,2.1容量)でリンスする。60℃にて真空下で吸引乾燥して、4.6gの乾燥7−(1−エチル−プロピル)−3−(4−クロロ−2−モルホリン−4−イル−チアゾール−5−イル)−2,5−ジメチル−ピラゾロ[1,5−a]ピリミジン(88.8%収率、HPLCアッセイによる純度は99.88%である)を得る。MS(ES)=420(M+1)。
7−(1−エチル−プロピル)−3−ヨード−2,5−ジメチル−ピラゾロ[1,5−a]ピリミジン(10g,29.17mmol)、2,4−ジクロロチアゾール(5.2g,33.76mmol)、炭酸セシウム(19.9g,61.07mmol)および1,10−フェナントロリン(1g,5.5mmol)を、250mLの3つ口丸底フラスコに入れ、続いて2−MeTHF(36mL,3.6容量)を加える。反応混合物を窒素で脱気し、次いで真空にする。塩化第一銅(0.57g,5.7mmol)、DMAC(10mL,1容量)および2−MeTHF(4mL,0.4容量)を連続して加える。反応混合物を窒素で脱気し、次いで真空にする。内容物を20時間還流する。反応混合物を約70℃まで冷却し、2−MeTHF(100mL,10容量)を加える。内容物を約70℃にて濾過し、残留ケーキを約65〜72℃にて2−MeTHF(80mL,8容量)で洗浄する。濾液を分液漏斗に移し、水で抽出する。有機層を分離し、希HClで洗浄する。得られた有機層をDarco G60で処理し、加熱(60℃)して濾過する。濾液を約2.8容量まで大気圧で濃縮する。25mLの2−プロパノールを加え、続いて約2.8容量まで再濃縮する。さらに25mLの2−プロパノールを加え、続いて約2.8容量まで再濃縮する。最終的に、48mLの2−プロパノールを加える。内容物を−7℃まで冷却し、−7℃にて1時間維持し、濾過し、20mLの冷却した2−プロパノールでリンスする。生成物を吸引乾燥し、次いで60℃にて真空乾燥して、9.41gの7−(1−エチル−プロピル)−3−(2,4−ジクロロ−チアゾール−5−イル)−2,5−ジメチル−ピラゾロ[1,5−a]ピリミジンを得る(HPLCアッセイによる生成物の純度は95.88%である)。MS(ES)=369(M+1)。
Claims (18)
- R1およびR2は、それぞれエチルである、請求項1に記載の化合物、またはその塩。
- R1およびR2が、それぞれエチルである請求項3に記載の方法。
- ハロゲン化銅が、CuClである請求項3または4のいずれかに記載の方法。
- リガンドが、1,10−フェナントロリンである請求項3から5のうちいずれか一項に記載の方法。
- ステップ(i)における塩基が、Cs2CO3である請求項3から6のうちいずれか一項に記載の方法。
- ステップ(ii)における塩基が、K2CO3である請求項3から7のうちいずれか一項に記載の方法。
- R1およびR2が、それぞれエチルであり、ハロゲン化銅が、CuClであり、リガンドが、1,10−フェナントロリンであり、ステップ(i)における塩基が、Cs2CO3であり、ステップ(ii)における塩基が、K2CO3である請求項3に記載の方法。
- ステップ(i)の溶媒が、1,4−ジオキサンまたは2−MeTHF/DMACであり、ステップ(ii)の溶媒が、モルホリン、2−MeTHF、または、2−プロパノールである請求項9に記載の方法。
- 溶媒が、2−メチルテトラヒドロフランである請求項11に記載の方法。
- 溶媒が、2−プロパノールである請求項11に記載の方法。
- R1およびR2が、それぞれエチルである請求項11から13のうちいずれか一項に記載の方法。
- 溶媒が、2−メチルテトラヒドロフランである請求項15に記載の方法。
- 溶媒が、2−プロパノールである請求項15に記載の方法。
- R1およびR2が、それぞれエチルである請求項15から17のうちいずれか一項に記載の方法。
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