CN106032383B - 一类三环类似物、其制备方法和用途 - Google Patents
一类三环类似物、其制备方法和用途 Download PDFInfo
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- CN106032383B CN106032383B CN201510121662.9A CN201510121662A CN106032383B CN 106032383 B CN106032383 B CN 106032383B CN 201510121662 A CN201510121662 A CN 201510121662A CN 106032383 B CN106032383 B CN 106032383B
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- pyripyropene
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- 238000002360 preparation method Methods 0.000 title claims abstract description 34
- PMMQOFWSZRQWEV-RVTXXDJVSA-N pyripyropene A Chemical group O([C@]1(C)[C@@H](OC(C)=O)C[C@@H]2[C@]([C@H]1[C@@H](O)C=1C(=O)O3)(C)CC[C@@H]([C@@]2(C)COC(=O)C)OC(C)=O)C=1C=C3C1=CC=CN=C1 PMMQOFWSZRQWEV-RVTXXDJVSA-N 0.000 claims abstract description 34
- 102100036673 Sterol O-acyltransferase 2 Human genes 0.000 claims abstract description 27
- PMMQOFWSZRQWEV-UHFFFAOYSA-N pyripyropene A Natural products CC(=O)OCC1(C)C(OC(C)=O)CCC(C2C(O)C=3C(=O)O4)(C)C1CC(OC(C)=O)C2(C)OC=3C=C4C1=CC=CN=C1 PMMQOFWSZRQWEV-UHFFFAOYSA-N 0.000 claims abstract description 17
- 201000001320 Atherosclerosis Diseases 0.000 claims abstract description 12
- 108010016092 sterol O-acyltransferase 2 Proteins 0.000 claims abstract description 3
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 claims description 174
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 150
- 150000001875 compounds Chemical class 0.000 claims description 111
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 claims description 62
- 238000006243 chemical reaction Methods 0.000 claims description 39
- 229910052739 hydrogen Inorganic materials 0.000 claims description 26
- 239000001257 hydrogen Substances 0.000 claims description 25
- -1 hydroxy, acetoxy Chemical group 0.000 claims description 18
- 239000002904 solvent Substances 0.000 claims description 17
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 15
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 14
- 150000002431 hydrogen Chemical group 0.000 claims description 13
- 229910052736 halogen Inorganic materials 0.000 claims description 11
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 8
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 7
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 7
- 239000000010 aprotic solvent Substances 0.000 claims description 7
- 239000003814 drug Substances 0.000 claims description 7
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 claims description 7
- 238000005779 Luche reduction reaction Methods 0.000 claims description 5
- SMNRFWMNPDABKZ-WVALLCKVSA-N [[(2R,3S,4R,5S)-5-(2,6-dioxo-3H-pyridin-3-yl)-3,4-dihydroxyoxolan-2-yl]methoxy-hydroxyphosphoryl] [[[(2R,3S,4S,5R,6R)-4-fluoro-3,5-dihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy-hydroxyphosphoryl]oxy-hydroxyphosphoryl] hydrogen phosphate Chemical compound OC[C@H]1O[C@H](OP(O)(=O)OP(O)(=O)OP(O)(=O)OP(O)(=O)OC[C@H]2O[C@H]([C@H](O)[C@@H]2O)C2C=CC(=O)NC2=O)[C@H](O)[C@@H](F)[C@@H]1O SMNRFWMNPDABKZ-WVALLCKVSA-N 0.000 claims description 5
- 238000005917 acylation reaction Methods 0.000 claims description 5
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 5
- YNESATAKKCNGOF-UHFFFAOYSA-N lithium bis(trimethylsilyl)amide Chemical compound [Li+].C[Si](C)(C)[N-][Si](C)(C)C YNESATAKKCNGOF-UHFFFAOYSA-N 0.000 claims description 5
- 229940126639 Compound 33 Drugs 0.000 claims description 4
- 125000002252 acyl group Chemical group 0.000 claims description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical group [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 4
- 229940125890 compound Ia Drugs 0.000 claims description 4
- 239000001301 oxygen Substances 0.000 claims description 4
- 125000004430 oxygen atom Chemical group O* 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 4
- 238000006722 reduction reaction Methods 0.000 claims description 4
- 238000003797 solvolysis reaction Methods 0.000 claims description 4
- 125000001424 substituent group Chemical group 0.000 claims description 4
- 238000010511 deprotection reaction Methods 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
- 238000007363 ring formation reaction Methods 0.000 claims description 3
- GLGSZERYOLHNML-UHFFFAOYSA-N $l^{1}-oxidanyl(phenyl)methanone Chemical class [O]C(=O)C1=CC=CC=C1 GLGSZERYOLHNML-UHFFFAOYSA-N 0.000 claims description 2
- KQZLRWGGWXJPOS-NLFPWZOASA-N 1-[(1R)-1-(2,4-dichlorophenyl)ethyl]-6-[(4S,5R)-4-[(2S)-2-(hydroxymethyl)pyrrolidin-1-yl]-5-methylcyclohexen-1-yl]pyrazolo[3,4-b]pyrazine-3-carbonitrile Chemical compound ClC1=C(C=CC(=C1)Cl)[C@@H](C)N1N=C(C=2C1=NC(=CN=2)C1=CC[C@@H]([C@@H](C1)C)N1[C@@H](CCC1)CO)C#N KQZLRWGGWXJPOS-NLFPWZOASA-N 0.000 claims description 2
- 125000003349 3-pyridyl group Chemical group N1=C([H])C([*])=C([H])C([H])=C1[H] 0.000 claims description 2
- 239000007818 Grignard reagent Substances 0.000 claims description 2
- 229940124639 Selective inhibitor Drugs 0.000 claims description 2
- 230000002378 acidificating effect Effects 0.000 claims description 2
- 229940125877 compound 31 Drugs 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 238000006386 neutralization reaction Methods 0.000 claims description 2
- 238000006798 ring closing metathesis reaction Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 7
- NPRYCHLHHVWLQZ-TURQNECASA-N 2-amino-9-[(2R,3S,4S,5R)-4-fluoro-3-hydroxy-5-(hydroxymethyl)oxolan-2-yl]-7-prop-2-ynylpurin-8-one Chemical compound NC1=NC=C2N(C(N(C2=N1)[C@@H]1O[C@@H]([C@H]([C@H]1O)F)CO)=O)CC#C NPRYCHLHHVWLQZ-TURQNECASA-N 0.000 claims 2
- PNUZDKCDAWUEGK-CYZMBNFOSA-N Sitafloxacin Chemical compound C([C@H]1N)N(C=2C(=C3C(C(C(C(O)=O)=CN3[C@H]3[C@H](C3)F)=O)=CC=2F)Cl)CC11CC1 PNUZDKCDAWUEGK-CYZMBNFOSA-N 0.000 claims 2
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims 2
- NGNBDVOYPDDBFK-UHFFFAOYSA-N 2-[2,4-di(pentan-2-yl)phenoxy]acetyl chloride Chemical compound CCCC(C)C1=CC=C(OCC(Cl)=O)C(C(C)CCC)=C1 NGNBDVOYPDDBFK-UHFFFAOYSA-N 0.000 claims 1
- 239000003112 inhibitor Substances 0.000 abstract description 12
- 229930014626 natural product Natural products 0.000 abstract description 6
- 208000024172 Cardiovascular disease Diseases 0.000 abstract description 5
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 126
- 238000005160 1H NMR spectroscopy Methods 0.000 description 56
- 238000004440 column chromatography Methods 0.000 description 40
- 239000000243 solution Substances 0.000 description 40
- 239000000203 mixture Substances 0.000 description 38
- HVYWMOMLDIMFJA-DPAQBDIFSA-N cholesterol Chemical compound C1C=C2C[C@@H](O)CC[C@]2(C)[C@@H]2[C@@H]1[C@@H]1CC[C@H]([C@H](C)CCCC(C)C)[C@@]1(C)CC2 HVYWMOMLDIMFJA-DPAQBDIFSA-N 0.000 description 36
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 35
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 33
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 29
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 description 29
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical class O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 28
- WFDIJRYMOXRFFG-UHFFFAOYSA-N Acetic anhydride Chemical compound CC(=O)OC(C)=O WFDIJRYMOXRFFG-UHFFFAOYSA-N 0.000 description 24
- 101000837584 Homo sapiens Acetyl-CoA acetyltransferase, cytosolic Proteins 0.000 description 23
- 101000642613 Homo sapiens Sterol O-acyltransferase 2 Proteins 0.000 description 23
- 239000012074 organic phase Substances 0.000 description 21
- 239000000047 product Substances 0.000 description 21
- 238000004809 thin layer chromatography Methods 0.000 description 21
- VHYFNPMBLIVWCW-UHFFFAOYSA-N 4-Dimethylaminopyridine Chemical compound CN(C)C1=CC=NC=C1 VHYFNPMBLIVWCW-UHFFFAOYSA-N 0.000 description 20
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 20
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 20
- 230000005764 inhibitory process Effects 0.000 description 19
- 238000010791 quenching Methods 0.000 description 18
- 239000007787 solid Substances 0.000 description 17
- 235000012000 cholesterol Nutrition 0.000 description 16
- 238000005406 washing Methods 0.000 description 16
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 15
- 239000007858 starting material Substances 0.000 description 15
- 230000000694 effects Effects 0.000 description 14
- 230000000171 quenching effect Effects 0.000 description 12
- 239000012043 crude product Substances 0.000 description 11
- 238000003756 stirring Methods 0.000 description 11
- 229960000549 4-dimethylaminophenol Drugs 0.000 description 10
- 239000005973 Carvone Substances 0.000 description 10
- 210000004027 cell Anatomy 0.000 description 10
- 238000001035 drying Methods 0.000 description 10
- 239000003208 petroleum Substances 0.000 description 10
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 9
- RAXXELZNTBOGNW-UHFFFAOYSA-N imidazole Natural products C1=CNC=N1 RAXXELZNTBOGNW-UHFFFAOYSA-N 0.000 description 9
- 125000004169 (C1-C6) alkyl group Chemical group 0.000 description 8
- 101000598552 Homo sapiens Acetyl-CoA acetyltransferase, mitochondrial Proteins 0.000 description 8
- 101000617830 Homo sapiens Sterol O-acyltransferase 1 Proteins 0.000 description 8
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- 229960000583 acetic acid Drugs 0.000 description 8
- 150000002367 halogens Chemical class 0.000 description 8
- 230000002401 inhibitory effect Effects 0.000 description 8
- 229920006395 saturated elastomer Polymers 0.000 description 8
- 238000012360 testing method Methods 0.000 description 8
- 125000005196 alkyl carbonyloxy group Chemical group 0.000 description 7
- 125000000753 cycloalkyl group Chemical group 0.000 description 7
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- 239000012279 sodium borohydride Substances 0.000 description 7
- 229910000033 sodium borohydride Inorganic materials 0.000 description 7
- KPZSTOVTJYRDIO-UHFFFAOYSA-K trichlorocerium;heptahydrate Chemical compound O.O.O.O.O.O.O.Cl[Ce](Cl)Cl KPZSTOVTJYRDIO-UHFFFAOYSA-K 0.000 description 7
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- WETWJCDKMRHUPV-UHFFFAOYSA-N acetyl chloride Chemical compound CC(Cl)=O WETWJCDKMRHUPV-UHFFFAOYSA-N 0.000 description 6
- 239000012346 acetyl chloride Substances 0.000 description 6
- 125000005201 cycloalkylcarbonyloxy group Chemical group 0.000 description 6
- 125000001072 heteroaryl group Chemical group 0.000 description 6
- IUYHWZFSGMZEOG-UHFFFAOYSA-M magnesium;propane;chloride Chemical compound [Mg+2].[Cl-].C[CH-]C IUYHWZFSGMZEOG-UHFFFAOYSA-M 0.000 description 6
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 6
- 238000000746 purification Methods 0.000 description 6
- 229930188995 pyripyropene Natural products 0.000 description 6
- 238000006467 substitution reaction Methods 0.000 description 6
- 125000003545 alkoxy group Chemical group 0.000 description 5
- 125000000217 alkyl group Chemical group 0.000 description 5
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- OKKJLVBELUTLKV-MZCSYVLQSA-N Deuterated methanol Chemical compound [2H]OC([2H])([2H])[2H] OKKJLVBELUTLKV-MZCSYVLQSA-N 0.000 description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
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- ULDHMXUKGWMISQ-UHFFFAOYSA-N carvone Chemical compound CC(=C)C1CC=C(C)C(=O)C1 ULDHMXUKGWMISQ-UHFFFAOYSA-N 0.000 description 4
- HEDRZPFGACZZDS-MICDWDOJSA-N deuterated chloroform Substances [2H]C(Cl)(Cl)Cl HEDRZPFGACZZDS-MICDWDOJSA-N 0.000 description 4
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- JPJALAQPGMAKDF-UHFFFAOYSA-N selenium dioxide Chemical compound O=[Se]=O JPJALAQPGMAKDF-UHFFFAOYSA-N 0.000 description 4
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- BCNZYOJHNLTNEZ-UHFFFAOYSA-N tert-butyldimethylsilyl chloride Chemical compound CC(C)(C)[Si](C)(C)Cl BCNZYOJHNLTNEZ-UHFFFAOYSA-N 0.000 description 2
- WJKHJLXJJJATHN-UHFFFAOYSA-N triflic anhydride Chemical compound FC(F)(F)S(=O)(=O)OS(=O)(=O)C(F)(F)F WJKHJLXJJJATHN-UHFFFAOYSA-N 0.000 description 2
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- A61K31/435—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with one nitrogen as the only ring hetero atom
- A61K31/44—Non condensed pyridines; Hydrogenated derivatives thereof
- A61K31/4427—Non condensed pyridines; Hydrogenated derivatives thereof containing further heterocyclic ring systems
- A61K31/4433—Non condensed pyridines; Hydrogenated derivatives thereof containing further heterocyclic ring systems containing a six-membered ring with oxygen as a ring hetero atom
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- C07D—HETEROCYCLIC COMPOUNDS
- C07D493/00—Heterocyclic compounds containing oxygen atoms as the only ring hetero atoms in the condensed system
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- A61K31/35—Heterocyclic compounds having oxygen as the only ring hetero atom, e.g. fungichromin having six-membered rings with one oxygen as the only ring hetero atom
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- C07D—HETEROCYCLIC COMPOUNDS
- C07D495/00—Heterocyclic compounds containing in the condensed system at least one hetero ring having sulfur atoms as the only ring hetero atoms
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- C07B—GENERAL METHODS OF ORGANIC CHEMISTRY; APPARATUS THEREFOR
- C07B37/00—Reactions without formation or introduction of functional groups containing hetero atoms, involving either the formation of a carbon-to-carbon bond between two carbon atoms not directly linked already or the disconnection of two directly linked carbon atoms
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- C—CHEMISTRY; METALLURGY
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Abstract
本发明涉及一类通式I所示的一系列具有天然产物Pyripyropene A结构的类似物及其制备方法和用途,更具体而言,本发明涉及天然产物Pyripyropene A的类似物,其制备方法以及作为酰基辅酶A:胆固醇酰基转移酶2(ACAT2)的抑制剂在治疗心血管疾病比如动脉粥样硬化等的应用。
Description
技术领域
本发明属于药物化学领域,涉及一系列具有天然产物Pyripyropene A结构的类似物及其制备方法和用途,更具体而言,本发明涉及天然产物Pyripyropene A的类似物,其制备方法以及作为酰基辅酶A:胆固醇酰基转移酶2(ACAT2)的抑制剂在治疗心血管疾病比如动脉粥样硬化等的应用。
背景技术
胆固醇在生物体内发挥着极其重要的作用,是所有动物细胞生存所必需的,正常生理条件下,高等生物细胞中的胆固醇水平被维持在一个相当狭小的浓度范围之内。胆固醇浓度过高或过低都将影响其正常生命过程,甚至产生严重病变。而细胞主要是通过调节胆固醇的合成、吸收、酯化、以及外流等途径之间的平衡以维持正常的胆固醇浓度。其中,酰基辅酶A:胆固醇酰基转移酶(ACAT)所催化的胆固醇的酯化反应无论是在细胞还是在个体水平的胆固醇代谢的平衡中都发挥了极其重要的作用。ACAT是细胞内唯一合成胆固醇酯的酶——催化游离的胆固醇与长链脂肪酸链连接形成胆固醇酯。
ACAT是一种位于组织细胞内粗面内质网上的膜结合蛋白,至今发现有两种亚型:ACAT1和ACAT2。它们二者的组织分布较为不同。ACAT1存在于几乎各种组织和细胞中,调控脑、巨噬细胞和肾上腺等组织中的胆固醇平衡。而ACAT2只在肝脏和小肠细胞中有表达,主要负责肝脏和小肠中的胆固醇的酯化合成。人们很早就认识到ACAT与动脉粥样硬化的发生密切相关。因此,抑制ACAT可能不仅能减弱小肠对胆固醇的吸收,而且可以抑制包括巨噬细胞来源的多类泡沫细胞的形成,是一个非常重要的治疗心血管疾病的靶点。
目前已知的ACAT抑制剂大致分类如下:a.合成类抑制剂:包括脲类,酰胺类,以及咪唑类;b.微生物类抑制剂;c.天然植物类抑制剂。但是,至今为止所有已发现的ACAT抑制剂均未成为药物,原因就是忽略了对ACAT两种亚型抑制活性的选择性。后来考察抑制ACAT1对于动脉粥样硬化的影响有不同的结论。一家实验室认为ACAT1的缺失可抑制动脉粥样硬化的发生;另一实验室实验结果表明ACAT1缺失的小鼠患动脉粥样硬化症的几率大大增加。而对ACAT2基因敲除的小鼠分析则发现,ACAT-2-/-的小鼠吸收胆固醇的能力下降了,对于结石病和食物诱导的高胆固醇血症有抵御作用。因此,推测特异性抑制ACAT1将破坏细胞内胆固醇代谢平衡,导致胆固醇的细胞毒性作用,并不利于防止动脉粥样硬化的发生。而ACAT2对于预防高血脂症和动脉粥样硬化,可能是一个有效的靶点。特异性抑制ACAT2将减少胆固醇的吸收和运输,并不会影响细胞内胆固醇代谢平衡。综合以上结论,开发靶向ACAT2的高选择性抑制剂则显得尤为重要。
但是重新检测已发现的ACAT抑制剂,只有Pyripyropene A具有ACAT2特异抑制活性。Pyripyropenes是1993年Satoshi Omura等人从Aspergillus fumigates FO-1289微生物的发酵液中提取获得的,天然分离获取Pyripyropenes的难度非常大,程序繁琐,获取量少。而且天然Pyripyropenes具有制备困难的缺点,以香芹酮为起点,全合成路线多达十九步,且多次用到极为苛刻的反应条件,产率极低。发明人尝试简化Pyripyropenes的结构,将Pyripyropenes的母核中全合成耗费精力最多的环系构筑去除,消除最左边环中的两个亚甲基和一个角甲基,但保留关键的双乙酰基结构单元,这样获得全新骨架的结构简化了的目标分子,结构复杂程度大大降低,且易于从简单的天然原料香芹酮制备。从而希望发现抑制活性更好,选择性更高的新型ACAT2抑制剂。本发明公开了一类Pyripyropenes的三环化合物,其主要特点是最左边环系去除后得到的一些化合物与天然产物Pyripyropene A相比其ACAT2的特异抑制活性明显增加。本发明公开了这一结构对活性的影响规律,并得到一系列性能优异的化合物,与天然产物Pyripyropene A相比,不仅合成简便,而且其对ACAT2活性的抑制和对ACAT2的选择性抑制均明显优于Pyripyropene A,有望成为作用于该靶点治疗心血管疾病比如动脉粥样硬化等的新型药物。
发明内容
本发明的目的在于设计与合成一类新型的简化的Pyripyropene A类似物,其可以作为ACAT2抑制剂,从而为治疗心血管疾病比如动脉粥样硬化等药物的发现开辟新途径。
本发明的另一目的在于提供上述的Pyripyropene A的类似物的制备方法。
本发明的又一目的是提供上述的Pyripyropene A的类似物的用途。
本发明所述的Pyripyropene A的类似物具有以下通式(I)所示的结构:
其中:
n=0、1或2;优选为n=1;
R1为氢或C1-C6烷基;R1优选为氢或甲基;
R2和R3各自独立地为氢、羟基、C1-C6烷基羰基氧基团、C1-C6烷基羰基硫基团、C1-C6烷基羰基胺基团、3至8元环烷基羰基氧基团、3至8元环烷基羰基硫基团、3至8元环烷基羰基胺基团、取代或未取代的5至8元芳基羰基氧基团、取代或未取代的杂芳基羰基氧基团,其中所述取代是指被卤素、羟基、烷基、烷氧基、氨基、氰基取代,优选的,R2和R3各自独立地为氢、羟基、乙基羰基氧基团(即乙酰氧基,-OAc)或对位氰基取代的苯基羰基氧基团;更优选的,R2和R3其中一个为氢,另一个选自羟基、乙基羰基氧基团(即乙酰氧基,-OAc)或对位氰基取代的苯基羰基氧基团;
R4和R5各自独立地为氢、羟基、C1-C6烷基羰基氧基团、C1-C6烷基羰基硫基团、C1-C6烷基羰基胺基团、3至8元环烷基羰基氧基团、3至8元环烷基羰基硫基团、3至8元环烷基羰基胺基团、其中,R7、R8和R9各自独立地为氢、羟基、卤素、甲基、C1-C6烷基羰基氧基团、C1-C6烷基羰基硫基团、C1-C6烷基羰基胺基团、3至8元环烷基羰基氧基团、3至8元环烷基羰基硫基团、3至8元环烷基羰基胺基团、C1-C6烷基羰基氧亚甲基、3至8元环烷基羰基氧亚甲基、取代或未取代的5至8元杂芳基羰基氧基团、取代或未取代的5至8元杂芳基羰基氧亚甲基基团、取代或未取代的5至8元芳基羰基氧基团、取代或未取代的5至8元芳基羰基氧亚甲基基团,其中所述取代是指被卤素、羟基、烷基、烷氧基、氨基、氰基取代;Z1和Z2各自独立地为氢、氧原子、硫原子或氨基;R10和R11各自独立地为氢、C1-C6烷基、3至8元环烷基、取代或未取代的5至8元杂芳基、取代或未取代的5至8元芳基,其中所述取代是指被卤素、羟基、烷基、烷氧基、氨基、氰基取代;优选的,R4和R5各自独立的为氢、R7、R8和R9各自独立地为氢、羟基、卤素、甲基、C1-C6烷基羰基氧基团、取代或未取代的苯基羰基氧基团,其中所述取代是指被对位氰基取代;更优选的,R4和R5其中一个为氢、另一为
R6为未取代或取代的C1-C6烷基、未取代或取代C1-C6链烯基、取代或未取代的5至8元杂芳基、取代或未取代的5至8元芳基、取代或未取代的3至8元环烷基,其中所述取代是指被卤素、羟基、烷基、烷氧基、氨基、氰基取代;优选的,R6为取代或未取代的5至8元杂芳基;更优选的,R6为3位吡啶基;
X为氧原子、硫原子、氨基或C1-C6烷基;优选的,X为氧原子;
Y为氢;
W为氢、羟基、卤素、氧代基团(=O)、=N-OH、取代或未取代的5至8元芳基或杂芳基羰基氧基团、C1-C6烷基羰基氧基团或3至8元环烷基羰基氧基团;优选的,W为羟基、氧代基团(=O)或对位卤素取代的苯基羰基氧;
表示单键或双键;优选为单键。
在本发明中除非另外指出,表示连接位点;
在本发明的优选实施方案中,Y为氢,n=1,为单键,即本发明所述的通式(I)所示的Pyripyropene A的类似物具有如下通式(II)所示的结构:
在通式(II)中的各取代基的定义与通式(I)中的定义相同。
进一步优选地,Y为氢,n=1,X为氧,R1为甲基,为单键即本发明所述的通式(I)所示的Pyripyropene A的类似物具有如下通式(III)所示的结构:
其中,在通式(III)中,各取代基的定义与通式(I)中的定义相同。
更进一步优选地,Y为氢,n=1,X为氧,R1为甲基,为单键,R3、R5为氢,每个手性中心的绝对构型如下:W和Y构型保持一致,R2、R4、R1的构型按照如下通式(Ⅳ)中所示的绝对立体构型:
其中,在通式(Ⅳ)中,各取代基的定义与通式(I)中的定义相同。
在说明书中,术语“C1-C6烷基”可以为直链或支链C1-C6烷基,特别地,可以为甲基、乙基、丙基、异丙基、丁基、叔丁基、异丁基、戊基、新戊基或己基;优选地为直链或支链C1-C3烷基。
在说明书中,术语“5至8元杂芳基”为5至8元环的具有芳香性的基团;
在说明书中,术语“5至8元环烷基”为具有5至8元环的环烷基,具体地,可以为,环丙基、环丁基、环戊基、环己基、环庚基或环辛基。
在说明书中,术语“C1-C6烷基羰基氧基团”为CnH2n+1COO-,n为1-6。
在说明书中,术语“C1-C6烷基羰基硫基团”为CnH2n+1COS-,n为1-6。
在说明书中,术语“C1-C6烷基羰基胺基团”为CnH2n+1CONH-,n为1-6。
在说明书中,术语“3至8元环烷基羰基氧基团”为-OCO-3至8元环。
在说明书中,术语“3至8元环烷基羰基硫基团”为-SCO-3至8元环。
在说明书中,术语“3至8元环烷基羰基胺基团”为-NCO-3至8元环。
在说明书中,术语“C1-C6烷基羰基氧亚甲基”为CnH2n+1COOCH2-,n为1-6。
在说明书中,术语“3至8元环烷基羰基氧亚甲基”为-CH2OCO-3至8元环。
在本发明更优选的实施方案中,本发明所述通式(I)所示的Pyripyropene A的类似物具体为:
本发明提供了通式(I)所示的Pyripyropene A的类似物的制备方法。该制备方法可以通过下述路线来实现:
具体来说,包括以下步骤:
(1)化合物31与化合物267以及异丙基格氏试剂在THF中偶联反应,再被氧化后形成化合物32;
(2)化合物32经过溶剂解反应得到化合物33;
(3)化合物33被LHMDS攫氢烯醇化,随后和不同基团的酰氯(R6COCl)发生C-酰基化关环得到化合物34;
(4)化合物34在酸性条件下发生脱TBS保护基反应,再和不同的酸酐((R12)2CO)或酰氯(R12COCl)发生上酰基反应得到不同取代的化合物Ia和Ib;
化合物34制备得到化合物Ia和Ib的通式(Ⅱ)具体表示如下:
进一步的,
(5)化合物Ia经过Luche还原反应得到化合物Ic;
或
(6)化合物Ia经过CBS选择性还原反应可以得到特定构型的化合物Ie;
或
(7)化合物Ic与不同基团的酰氯(R13COCl)反应制得本发明所述化合物Id。
其中,R2、R3、R4、R5、R6、n和W的定义同前;R12为取代或未取代的5至8元芳基或杂芳基基团、C1-C6烷基基团、3至8元环烷基基团;R13为取代或未取代的5至8元芳基或杂芳基基团、C1-C6烷基基团、3至8元环烷基基团;其中所述取代是指被卤素、羟基、烷基、烷氧基、氨基、氰基取代;R14和R15中一个为氢,另一个为叔丁基二甲基硅基氧基。
其中,
步骤(1)中所述偶联反应所用溶剂选自四氢呋喃等非质子性溶剂;反应温度为-30℃至室温;
步骤(2)中所述溶剂解反应所用溶剂选自甲苯和甲醇;反应温度为80℃;
步骤(3)中所述C-酰基化关环反应所用溶剂选自四氢呋喃等非质子性溶剂;反应温度为0℃到室温;
步骤(4)中所述脱保护基TBS反应及上酰基反应所用溶剂选自二氯甲烷等非质子性溶剂;反应温度为室温;
步骤(5)中所述Luche还原反应所用溶剂选自甲醇、乙醇等醇类溶剂;反应温度为-78℃;
步骤(6)中所述CBS选择性还原反应所用溶剂选自四氢呋喃等非质子性溶剂;反应温度选自-78℃或-30℃等等;
本发明通式(I)所示的Pyripyropene A的类似物可以用于制备ACAT2高选择性抑制剂的药物,从而可以在制备治疗动脉粥样硬化等的药物中应用。
具体实施方式
下面结合具体实施例对本发明做进一步阐述,但本发明不局限于这些实施例。
化合物制备实施例
下述制备实施例中,NMR用Varian生产的Mercury-Vx 300M仪器测定,NMR定标:δH7.26ppm(CDCl3),2.50ppm(DMSO-d6),3.15ppm(CD3OD);试剂主要由上海化学试剂公司提供;TLC薄层层析硅胶板由山东烟台会友硅胶开发有限公司生产,型号HSGF 254;化合物纯化使用的正相柱层析硅胶为山东青岛海洋化工厂分厂生产,型号zcx-11,200-300目。
制备实施例一(化合物编号2,6)
把含有40.0g(0.266mol)(R)-香芹酮的40ml甲醇溶液冷至0℃,然后加入含有32.0g(0.57mol)KOH的40ml水和120ml甲醇混合溶液。所得混合液再冷至-5℃,随后加入30m130%H2O2,10分钟后,温度升至15℃,搅拌25分钟后,再冷至-3℃。补加35ml 30%H2O2,0℃下搅拌2.5小时。TLC监测反应完全,加入大量碎冰淬灭,乙酸乙酯萃取,饱和食盐水洗,干燥浓缩。粗品冰浴下加入1L1mol/l的氢氧化钠水溶液,加热回流1小时,冷至室温,低温下加入20%盐酸调pH至酸性,抽滤得到淡黄色固体为产物2-1(共29.8g,67%):1H NMR(CDCl3,300MHz)δ4.83(dd,J=13.8,15.3Hz,2H),2.74-2.41(m,5H),1.74(s,3H),1.69(s,3H).
0℃下,化合物2-1(380mg,2.29mmol)的二氯甲烷溶液中加入三乙胺(302mg,2.98mmol),搅拌5分钟后加入三氟甲磺酸酐(0.50ml,2.98mmol)。0℃下搅拌1小时,TLC监测反应完全,随后加入石油醚/乙醚(v/v)=1/1快速柱层析纯化得到产物2-2(726mg,2.44mmol,定量):1H NMR(CDCl3,300MHz)δ4.87(s,1H),4.79(s,1H),2.79-2.36(m,5H),1.84(s,3H),1.75(s,3H);
化合物2-2溶于MeOH(2.0ml)和DMF(3.0ml)中,加入Pd(OAc)2(8.0mg,0.04mmol),PPh3(11.0mg,0.04mmol)和Et3N(0.15ml,1.02mmol),插上一氧化碳气球,回流过夜。次日冷至室温,乙酸乙酯稀释,水洗,饱和食盐水洗,干燥,浓缩,柱层析分离纯化(正己烷/乙酸乙酯(v/v)=25:1)得到产物甲酯2-3透明油状物(50mg,0.24mmol,71%):1H NMR(CDCl3,300MHz)δ4.81(s,1H),4.75(s,1H),3.80(s,3H),2.72-2.30(m,5H),1.92(s,3H),1.79(s,3H).
二氧化硒(50mg,0.241mmol)溶于二氯甲烷中,滴加过氧叔丁醇(0.09ml,0.482mmol),冷至0℃,加入乙酸(0.002ml,0.0241mmol),大约30分钟后待二氧化硒完全溶解,随之加入化合物2-3的二氯甲烷溶液,升至室温搅拌36小时,原料几乎反应尽,加入乙酸乙酯稀释,10%氢氧化钾水溶液洗涤,饱和食盐水洗涤,干燥浓缩。柱层析分离(二氯甲烷:甲醇(v/v)=50:1)得到化合物2-4淡黄油状物为产物(8mg,14.87%)。1H NMR(d-DMSO,300MHz)δ5.18(s,1H),4.97(s,1H),4.15(s,2H),3.82(s,3H),2.83-2.37(m,5H),1.87(s,3H).
0℃下,向化合物2-4(400mg,1.78mmol)的四氢呋喃溶液中滴加BH3-Me2S(0.54ml,5.35mmol),然后升至室温,搅拌2h,再冷至0℃,加入1:1的THF:MeOH溶液20ml,随后加入30%H2O2(7.6ml)和3M NaOH的水溶液(17.7ml),升至室温搅拌2h,TLC检测原料反应尽,乙酸乙酯稀释,10%Na2SO3水溶液洗涤,饱和食盐水洗涤,干燥浓缩,柱层析分离(二氯甲烷:甲醇(v/v)=10:1)得到产物三羟基化合物2-5(180mg,41.31%)。1H NMR(CD3OD,300MHz)δ4.12(brs,1H),3.72(s,3H),3.74-3.62(m,4H),2.42(d,J=16.2Hz,1H),2.18-2.09(m,2H),1.99-1.83(m,1H),1.59-1.22(m,1H),1.32-1.24(m,1H).
化合物2-5(180mg,0.737mmol)溶于DMF中加入咪唑(302mg,4.43mmol),DMAP(cat.),搅拌5min后加入TBSCl(667mg,4.43mmol),混合物室温搅拌过夜。次日加入水淬灭,乙酸乙酯萃取。有机相用饱和食盐水洗,干燥浓缩。柱层析纯化(正己烷:乙酸乙酯(v/v)=50:1)得到化合物2-6(310mg,产率80%)1H NMR(CDCl3,300MHz)δ4.16(brs,1H),3.71(s,3H),3.68-3.56(m,4H),2.34(d,J=16.2Hz,1H),2.13-2.03(m,2H),2.01(s,3H),1.87-1.76(m,1H),1.63-1.41(m,1H),1.34(dd,J=8.7,18.9Hz,1H),0.88(s,27H),0.03(s,18H).
干冰丙酮浴下化合物2-6(310mg,0.529mmol)的THF溶液中滴加DIBAL-H(1.2ml,1.17mmol),滴毕后升至室温搅拌2h。TLC监测原料反应尽,加入饱和NaHCO3水溶液淬灭,混合物升至室温,抽滤,乙醚洗涤,滤液用饱和食盐水洗涤,无水硫酸钠干燥,浓缩,直接下一步。粗品溶于二氯甲烷中,0℃加入DMP(270mg,0.635mmol),升至室温搅拌1h。加入饱和硫代硫酸钠溶液/饱和碳酸氢钠溶液(v/v)=1/1淬灭,二氯甲烷萃取,饱和食盐水洗涤,浓缩,柱层析(正己烷/乙酸乙酯(v/v)=50/1),得到产物2-7(185mg,产率63%)。1H NMR(CDCl3,300MHz)δ10.14(s,1H),4.27(s,1H),3.76-3.58(m,4H),2.45(d,J=13.2Hz,1H),2.15(s,3H),1.89-1.08(m,5H),0.92(s,27H),0.03(s,18H).
碘代物267(311mg,1.16mmol)溶于干燥的THF中,冷至-30℃,滴加异丙基氯化镁(0.6ml,1.16mmol),此温下搅拌30分钟,随后加入化合物2-7(214mg,0.385mmol)的THF溶液,升温至室温搅拌30分钟,随后加入饱和氯化铵溶液淬灭。乙酸乙酯萃取,有机相用饱和食盐水洗涤,无水硫酸钠干燥,浓缩,直接下一步。粗品溶于二氯甲烷中,0℃加入DMP(245mg,0.580mmol),升至室温搅拌过夜。次日加入饱和硫代硫酸钠溶液/饱和碳酸氢钠溶液=1/1淬灭,二氯甲烷萃取,饱和食盐水洗涤,浓缩,柱层析纯化(正己烷/乙酸乙酯(v/v)=25/1),得到产物2-8(87mg,产率33%)。1H NMR(CDCl3,300MHz)δ4.21(brs,1H),3.72-3.56(m,4H),2.24(s,3H),2.14-1.86(m,4H),1.52-1.46(m,1H),1.41(q,J=13.3Hz,1H),0.94(s,27H),0.03(s,6H),0.02(s,12H).
化合物2-8(80mg,0.115mmol)溶于甲苯(2ml)和甲醇(0.5ml)中,反应混合物加热至外温80℃下回流过夜。次日浓缩柱层析分离(正己烷/乙酸乙酯(v/v)=10/1),得到产物2-9(77mg,产率99%)。1H NMR(CDCl3,300MHz)δ3.82(dd,J=4.8,11.1Hz,1H),3.79(s,3H),3.67-3.55(m,4H),2.46(dd,J=12.3,3.6Hz,1H),2.25(s,3H),2.07(d,J=14.2Hz,1H),1.82(d,J=13.8Hz,1H),1.63-1.1.47(m,2H),1.32(dd,J=12.9,24.6Hz,1H),1.19(s,3H),1.08(dd,J=12.6,26.1Hz,1H),0.90(s,9H),0.88(s,18H),0.11(s,3H),0.08(s,3H),0.02(s,12H).
向0℃下LHMDS(1ml,0.85mmol)的THF溶液中滴加化合物2-9(57mg,0.085mmol)的THF溶液,升至室温搅拌4h,快速加热烟酰氯盐酸盐,室温搅拌2h。TLC检测原料反应彻底,加入2ml乙酸淬灭,10ml水稀释,二氯甲烷萃取,无水硫酸钠干燥,浓缩。柱层析纯化(正己烷/丙酮(v/v)=3/1),得到产物2-10黄色固体(30mg,产率47.4%)。1H NMR(CDCl3,300MHz)δ9.04(s,1H),8.73(d,J=3.3Hz,1H),8.17(d,J=8.1Hz,1H),7.44(dd,J=4.8,8.1Hz,1H),6.48(s,1H),3.93(dd,J=4.8,11.4Hz,1H),3.69-3.58(m,4H),2.61(dd,J=3.6,12.3Hz,1H),2.19(d,J=14.1Hz,1H),1.87(d,J=12.9Hz,1H),1.68-1.63(m,1H),1.54(dd,J=5.7,11.1Hz,1H),1.39(dd,J=12.9,24.6Hz,1H),1.29(s,3H),1.27-1.18(m,1H),0.87(s,27H),0.18(s,6H),0.13(s,6H).
乙酰氯(13μl,0.175mmol)滴加到0.1ml甲醇中,混合物在室温搅拌5分钟,随后加入化合物2-10(13mg,0.018mmol)的甲醇溶液,室温下搅拌1小时。浓缩,直接下一步。粗品溶于二氯甲烷中,加入催化量DMAP,三乙胺(25μl,0.175mmol),乙酸酐(9μl,0.09mmol),室温搅拌半小时。TLC监测反应完全,加入水淬灭,乙酸乙酯萃取,无水硫酸钠干燥,浓缩直接下一步。
粗品2(10mg,0.019mmol)和七水氯化亚铈(50mg,0.133mmol)溶于甲醇中,冷至-78℃小心加入硼氢化钠(5.1mg,0.133mmol),混合物搅拌30分钟原料消失。加入丙酮淬灭,乙酸乙酯稀释,有机相用水洗,饱和食盐水洗,干燥,浓缩,柱层析(二氯甲烷/甲醇(v/v)=25/1)分离纯化,得到淡黄固体为最终产物6(9mg,90%):1H NMR(CDCl3,300MHz)δ9.25(s,1H),8.87(s,1H),8.63(s,1H),7.92(s,1H),6.84(s,1H),5.08-5.04(m,1H),4.45(d,J=10.2Hz,1H),4.17-4.06(m,4H),2.47-1.30(m,7H),2.09(s,3H),2.07(s,3H),2.02(s,3H),1.24(s,3H).
制备实施例二(化合物编号7)
由制备实施例一得到的化合物7-1(3.298g,15.84mmol)出发,和七水氯化亚铈(8.86g,23.76mmol)溶于甲醇中,冷至0℃小心加入硼氢化钠(899mg,23.76mmol),混合物搅拌30分钟原料消失。加入丙酮淬灭,乙酸乙酯稀释,有机相用水洗,饱和食盐水洗,干燥,浓缩,柱层析(石油醚/乙酸乙酯(v/v)=10/1)分离纯化,得到透明油状物为产物7-2(3.28g,99%):1H NMR(CDCl3,300MHz)δ4.75(dd,J=1.2,5.7Hz,2H),3.75(brs,1H),3.71(s,3H),2.45(brd,J=14.4Hz,1H),2.30-2.11(m,3H),2.03(s,3H),1.68(s,3H),1.52(td,J=12,9.9Hz,1H).化合物12(2.35g,11.17mmol)溶于DMF中加入咪唑(1.60g,22.34mmol),DMAP(cat.),搅拌5min后加入TBSCl(3.40g,22.34mmol),混合物室温搅拌过夜。次日加入水淬灭,乙酸乙酯萃取。有机相用饱和食盐水洗,干燥浓缩。柱层析纯化(石油醚:乙酸乙酯(v/v)=50:1)得到化合物7-3透明油状物。(3.55g,产率98%)1H NMR(CDCl3,300MHz)δ4.74(s,2H),4.24(brs,1H),3.72(s,3H),2.41(brd,J=14.1Hz,1H),2.23-2.02(m,3H),1.98(s,3H),1.68(s,3H),1.52(td,J=12.3,10.2Hz,1H),0.90(s,9H),0.10(s,3H),0.09(s,3H).
干冰丙酮浴下化合物7-3(3.55g,10.94mmol)的THF溶液中滴加DIBAL-H(24.10ml,24.10mmol),滴毕后升至室温搅拌2h。TLC监测原料反应尽,加入饱和NaHCO3水溶液淬灭,混合物升至室温,抽滤,乙醚洗涤,滤液用饱和食盐水洗涤,无水硫酸钠干燥,浓缩,直接下一步。粗品溶于二氯甲烷中,0℃加入DMP(5.60g,13.20mmol),升至室温搅拌1h。加入饱和硫代硫酸钠溶液/饱和碳酸氢钠溶液(v/v)=1/1淬灭,二氯甲烷萃取,饱和食盐水洗涤,浓缩,柱层析(正己烷/乙酸乙酯(v/v)=50/1),得到产物7-4(2.928g,产率91%)。1H NMR(CDCl3,300MHz)δ10.18(s,1H),4.75(s,2H),4.34(brs,1H),2.52(brd,J=15.3Hz),2.16(s,3H),2.12-1.83(m,3H),1.75(s,3H),1.52(td,J=12.6,10.2Hz,1H),0.93(s,9H),0.14(s,3H),0.12(s,3H).
碘代物267(656mg,2.45mmol)溶于干燥的THF中,冷至-30℃,滴加2M异丙基氯化镁的THF溶液(1.5ml,2.45mmol),此温下搅拌30分钟,随后加入化合物7-4(240mg,0.82mmol)的THF溶液,升温至室温搅拌30分钟,随后加入饱和氯化铵溶液淬灭。乙酸乙酯萃取,有机相用饱和食盐水洗涤,无水硫酸钠干燥,浓缩,直接下一步。粗品7-5溶于二氯甲烷中,,0℃加入DMP(519mg,1.23mmol),升至室温搅拌过夜。次日加入饱和硫代硫酸钠溶液/饱和碳酸氢钠溶液(v/v)=1/1淬灭,二氯甲烷萃取,饱和食盐水洗涤,浓缩,柱层析纯化(正己烷/乙酸乙酯(v/v)=25/1),得到产物7-6(157mg,两步产率45%)。1H NMR(CDCl3,300MHz)δ4.73(s,2H),4.29(s,1H),2.36(dt,J=7.8,1.8Hz,1H),2.30(s,3H),2.26-1.97(m,3H),1.72(s,6H),1.68(s,6H),1.58(td,J=12.6,10.2Hz,1H),0.88(s,9H),0.08(s,6H).
化合物7-6(1.50g,3.46mmol)溶于甲苯(60.0ml)和甲醇(15.0ml)中,反应混合物加热至外温80℃下回流过夜。次日浓缩柱层析分离(正己烷/乙酸乙酯(v/v)=10/1),得到产物7-7(黄色油状物,1.21g,产率86%)。1H NMR(CDCl3,300MHz)δ4.71(s,2H),3.88(dd,J=6.0,12.0Hz,1H),3.75(s,3H),2.52(dd,J=3.0,12.0Hz,1H),2.20(s,3H),2.15-1.99(m,3H),1.80-1.74(m,1H),1.69(s,3H),1.36(td,J=12.6,10.2Hz,1H),1.19(s,3H),0.88(s,9H),0.09(s,3H),0.07(s,3H).
向0℃下1M的LHMDS(2.00ml,2.00mmol)THF溶液中滴加化合物7-7(78.00mg,0.19mmol)的THF溶液,升至室温搅拌4h,快速加热烟酰氯盐酸盐,室温搅拌2h。TLC检测原料反应彻底,加入乙酸淬灭,水稀释,二氯甲烷萃取,无水硫酸钠干燥,浓缩。柱层析纯化(正己烷/丙酮(v/v)=3/1),得到重要中间体7-8白色固体(41.00mg,两步产率45%)。1H NMR(CDCl3,300MHz)δ9.06(d,J=1.2Hz,1H),8.75(d,J=3.6Hz,1H),8.19(d,J=8.4Hz,1H),7.45(dd,J=4.8,8.1Hz,1H),6.50(s,1H),4.89(s,2H),4.03(dd,J=10.8,4.8Hz,1H),2.71(dd,J=12.3,3.6Hz,1H),2.28(d,J=13.5Hz,1H),2.13(t,J=12.9Hz,1H),1.88(d,J=13.8Hz,1H),1.76(s,3H),1.44(q,J=12.9Hz,1H),1.34(s,3H),1.31-1.23(m,1H),0.96(s,9H),0.07(s,3H),0.04(s,3H).
化合物7-8(134mg,0.279mmol)溶于冰醋酸(7.4ml)和水(0.03ml)中,加入醋酸银(100mg,0.594mmol)和碘(83mg,0.327mmol),室温搅拌过夜。次日加入水,乙酸乙酯萃取,有机相用饱和食盐水洗涤,浓缩抽干,柱层析分离(二氯甲烷/甲醇(v/v)=25/1),得到化合物7-9,包含一对非对映异构体7-9-a(33mg)和7-9-b(44mg)。7-9-a:1H NMR(CDCl3,400MHz)δ9.03(d,J=2.8Hz,1H),8.73(d,J=4.8Hz,1H),8.16(dd,J=2.8,10.4Hz,1H),7.44(dd,J=6.8,11.2Hz,1H),6.44(s,1H),4.08(dd,J=12.0,32.0Hz,2H),4.00(dd,J=4.0,8.0Hz,1H),2.68(dd,J=4.0,16.0Hz,1H),2.21(d,J=16.0Hz,1H),2.11(s,3H),2.01(d,J=12.0Hz,1H),1.72(t,J=12.0Hz,1H),1.37(dd,J=12.0,24.0Hz,1H),1.31(s,3H),1.20(s,3H),1.15(dd,J=8.0,24.0Hz,1H),0.95(s,9H),0.19(s,3H),0.14(s,3H).
7-9-b:1H NMR(CDCl3,400MHz)δ9.05(s,1H),8.75(d,J=4.0Hz,1H),8.18(d,J=8.0Hz,1H),7.45(dd,J=4.0,8.0Hz,1H),6.43(s,1H),4.07(dd,J=12.0,32.0Hz,2H),3.98(dd,J=4.0,8.0Hz,1H),2.66(dd,J=4.0,16.0Hz,1H),2.36(d,J=16.0Hz,1H),2.12(s,3H),1.89(d,J=12.0Hz,1H),1.70(t,J=12.0Hz,1H),1.37-1.26(m,2H),1.32(s,3H),1.22(s,3H),0.95(s,9H),0.19(s,3H),0.14(s,3H).
乙酰氯(0.06ml,0.6mmol)滴加到0.7ml甲醇中,混合物在室温搅拌5分钟,随后加入化合物7-9(33mg,0.060mmol)的甲醇溶液,室温下搅拌1小时。浓缩,直接下一步。粗品溶于二氯甲烷中,加入催化量DMAP,三乙胺(0.09ml,0.60mmol),乙酸酐(0.04ml,0.30mmol),室温搅拌过夜。TLC监测反应完全,加入水淬灭,乙酸乙酯萃取,无水硫酸钠干燥,浓缩,柱层析分离纯化(二氯甲烷/甲醇(v/v)=50/1)得到化合物黄色固体7-10(产率80%),由于上一步7-9分为7-9-a和7-9-b,得到相对应7-10-a和7-10-b。
7-10-a:1H NMR(CDCl3,400MHz)δ9.11(s,1H),8.79(s,1H),8.22(d,J=8.0Hz,1H),7.48(s,1H),6.55(s,1H),5.33(dd,J=4.0,8.0Hz,1H),4.47(dd,J=12.0,100.0Hz,2H),2.82(dd,J=4.0,8.0Hz,1H),2.23-1.86(m,3H),2.22(s,3H),2.11(s,3H),2.05(s,3H),1.59-1.29(m,2H),1.52(s,3H),1.45(s,3H).
7-10-b:1H NMR(CDCl3,400MHz)δ9.08(s,1H),8.76(d,J=4.0Hz,1H),8.19(d,J=4.0Hz,1H),7.46(dd,J=4.0,8.0Hz,1H),6.55(s,1H),5.29(dd,J=4.0,8.0Hz,1H),4.44(dd,J=8.0,48.0Hz,2H),2.79(dd,J=4.0,8.0Hz,1H),2.38-1.97(m,3H),2.19(s,3H),2.10(s,3H),2.03(s,3H),1.57-1.28(m,2H),1.47(s,3H),1.43(s,3H).
化合物7-10(11mg,0.021mmol)和七水氯化亚铈(55mg,0.147mmol)溶于甲醇中,冷至-78℃小心加入硼氢化钠(5.6mg,0.147mmol),混合物搅拌30分钟原料消失。加入丙酮淬灭,乙酸乙酯稀释,有机相用水洗,饱和食盐水洗,干燥,浓缩,柱层析(二氯甲烷/甲醇=50/1)分离纯化,得到淡黄固体为最终产物7(8.5mg,产率78%):1HNMR(CDCl3,400MHz)δ9.01(d,J=4.0Hz,1H),8.69(dd,J=4.0,8.0Hz,1H),8.09(td,J=4.0,8.0Hz,1H),7.41(dd,J=4.0,8.0Hz,1H),6.49(s,1H),5.08(dd,J=4.0,8.0Hz,1H),4.56-4.34(m,3H),2.34-1.99(m,2H),2.17(s,3H),2.07(s,3H),1.99(s,3H),1.89(t,J=12.0Hz,1H),1.58-1.51(m,1H),1.48(s,3H),1.30(s,3H),1.13(dd,J=12.0,24.0Hz,1H).
制备实施例三(化合物编号1,4,5)
由制备实施例二得到的化合物7-8(28mg,0.059mmol)出发,溶于MeOH中,向其中滴加乙酰氯(44μl,0.58mmol),混合物在室温搅拌1小时。浓缩,直接下一步。粗品溶于二氯甲烷中,加入催化量DMAP,三乙胺(85μl,0.59mmol),乙酸酐(30μl,0.295mmol),室温搅拌30分钟。TLC监测反应完全,加入水淬灭,乙酸乙酯萃取,有机相用无水硫酸钠干燥,浓缩,柱层析分离纯化(二氯甲烷/甲醇(v/v)=50/1)得到化合物黄色固体1(产率80%):1HNMR(CDCl3,300MHz)δ9.06(s,1H),8.74(s,1H),8.17(d,J=8.1Hz,1H),7.44(s,1H),6.54(s,1H),5.29(dd,J=5.4,6.6Hz,1H),2.99(t,J=3.9Hz,1H),2.83-2.74(m,1H),2.46(d,J=12.6Hz,1H),2.30-1.98(m,2H),1.80-1.69(m,1H),2.17(s,3H),1.63(s,3H),1.60(s,3H),1.32(s,3H).
按照化合物1制备实施例二中的合成方法得到化合物4(黄色固体,产率80%):1HNMR(CDCl3,300MHz)δ8.99(s,1H),8.68(s,1H),8.09(d,J=8.1Hz,1H),7.40(t,J=7.5Hz,1H),6.49(s,1H),5.06(d,J=4.5Hz,1H),4.47(d,J=9.9Hz,1H),2.47(d,J=13.8Hz,1H),2.40-1.72(m,5H),2.22(s,3H),1.68(s,3H),1.66(s,3H),1.24(s,3H).
化合物4(5.0mg,0.012mmol)和无水醋酸锌(5mg,0.024mmol)溶于冰醋酸中,加热至80℃过夜。次日用乙酸乙酯稀释,有机相依次用水洗,饱和食盐水洗涤,干燥浓缩,薄层层析分离(二氯甲烷/甲醇=25/1)得到产物5(淡黄色固体,产率40%):1HNMR(CDCl3,300MHz)δ9.01(s,1H),8.69(s,1H),8.10(d,J=8.1Hz,1H),7.41(s,1H),6.49(s,1H),5.05(d,J=4.8Hz,1H),4.44(d,J=5.1Hz,1H),2.36(d,J=10.2Hz,1H),2.26(s,3H),2.04(s,3H),2.17-0.85(m,5H),1.50(s,3H),1.49(s,3H),1.28(s,3H).
制备实施例四(化合物编号13,14)
乙酰氯(0.07ml,0.951mmol)滴加到0.4ml甲醇中,混合物在室温搅拌5分钟,随后加入化合物7-9(57mg,0.096mmol)的甲醇溶液,室温下搅拌1小时。浓缩,抽干,直接下一步。粗品,对氰基苯甲酸,EDC·HCl,催化量DMAP溶于二氯甲烷中,室温搅拌过夜。次日TLC显示原料反应完全,加入水淬灭,乙酸乙酯萃取,无水硫酸钠干燥,浓缩,柱层析分离纯化(二氯甲烷/甲醇(v/v)=50/1)得到化合物14(5mg,产率10%):1HNMR(CDCl3,300MHz)δ8.94(s,1H),8.58(d,J=3.3Hz,1H),8.12(d,J=7.8Hz,2H),8.06(d,J=5.4Hz,1H),7.66(d,J=8.4Hz,2H),7.40(dd,J=4.8,7.8Hz,1H),6.73(s,1H),4.24(s,2H),3.95(s,1H),3.54(s,1H),2.64(d,J=12.0Hz,1H),1.97-1.40(m,4H),1.39(s,3H),1.27(s,3H).和13(16mg,产率32%):1HNMR(CDCl3,300MHz)δ9.01(s,1H),8.73(s,1H),8.26-8.11(m,5H),7.83-7.77(m,4H),7.43(dd,J=8.1,12.9Hz,1H),6.48(s,1H),5.72-5.68(m,1H),4.52-4.26(m,2H),2.90-2.83(m,1H),2.40-1.09(m,5H),1.64(s,3H),1.31(s,3H).
用同样方法合成以下化合物:
将制备实施例四中的化合物7-9替换为7-8,制备得到化合物11;
将制备实施例二中的化合物7-10替换为11,制备得到化合物12。
制备实施例五(化合物编号8,9,10)
由实施例五中得到的11(30mg,0.061mmol)溶于冰醋酸(1.5ml)和水(5.9μl)中,加入醋酸银(21mg,0.121mmol)和碘(17mg,0.665mmol),室温搅拌过夜。次日加入水,乙酸乙酯萃取,有机相用饱和食盐水洗涤,浓缩抽干,柱层析分离(二氯甲烷/甲醇(v/v)=25/1),得到化合物9-1,包含一对非对映异构体共16mg(产率46.3%)。9-1-a:1H NMR(CDCl3,400MHz)δ9.014(s,1H),8.72(d,J=4.8Hz,1H),8.19(d,J=8.1Hz,2H),8.15(d,J=7.8Hz,1H),7.80(d,J=8.7Hz,2H),7.42(dd,J=4.5,8.1Hz,1H),6.53(s,1H),5.57(dd,J=5.4,12.3Hz,1H),4.15(s,2H),2.86(d,J=9.0Hz,1H),2.33(d,J=4.5Hz,1H),2.19(s,3H),2.08-1.68(m,3H),1.64(s,3H),1.33(dd,J=8.1,21.6Hz,1H),1.24(s,3H).
9-1-b:1H NMR(CDCl3,400MHz)δ9.014(s,1H),8.72(d,J=4.8Hz,1H),8.19(d,J=8.1Hz,2H),8.15(d,J=7.8Hz,1H),7.80(d,J=8.7Hz,2H),7.42(dd,J=4.5,8.1Hz,1H),6.53(s,1H),5.57(dd,J=5.4,12.3Hz,1H),4.15(s,2H),2.86(d,J=9.0Hz,1H),2.45(d,J=13.5Hz,1H),2.19(s,3H),2.08-1.68(m,3H),1.64(s,3H),1.39(dd,J=12.9,27.0Hz,1H),1.24(s,3H).
化合物9-1(16mg,0.028mmol)出发,溶于二氯甲烷中,加入DMAP(cat.),滴加三乙胺(0.03ml,0.168mmol),再滴加乙酸酐(0.02ml,0.084mmol),室温搅拌过夜。次日,加入水淬灭,二氯甲烷萃取,浓缩,柱层析分离(二氯甲烷/甲醇(v/v)=50/1),得到化合物9(4.0mg,产率23.3%):1HNMR(CDCl3,300MHz)δ9.01(s,1H),8.74(s,1H),8.21-8.12(m,3H),7.80(t,J=8.4Hz,2H),7.43(dd,J=6.6,13.8Hz,1H),6.48(s,1H),5.58-5.53(m,1H),4.60-4.32(m,2H),2.87(d,J=9.3Hz,1H),2.43-2.22(m,3H),2.19(s,3H),2.10(s,3H),1.56-1.13(m,2H),1.45(s,3H),1.35(s,3H).和8(4.0mg,产率23.3%):1HNMR(CDCl3,300MHz)δ8.92(d,J=2.1Hz,1H),8.65(d,J=4.8Hz,1H),8.20(dd,J=2.1,8.4Hz,2H),8.02(d,J=8.1Hz,1H),7.81(d,J=8.4Hz,2H),7.35(dd,J=5.1,8.4Hz,1H),6.37(s,1H),5.67(s,1H),4.59-4.36(m,2H),3.25-3.23(m,1H),2.80-2.66(m,1H),2.33(s,3H),2.32-1.66(m,2H),2.07(s,3H),1.99(s,3H),1.52(s,3H),1.47(s,3H),1.11-0.96(m,1H).
按照化合物7制备实施例二中的合成方法得到化合物10(产率80%):1HNMR(CDCl3,300MHz)δ8.93(s,1H),8.64(s,1H),8.21-8.12(m,3H),7.80(t,J=8.4Hz,2H),7.43(dd,J=6.6,13.8Hz,1H),6.43(s,1H),5.38-5.27(m,1H),4.58-4.32(m,3H),2.62-1.57(m,5H),2.19(s,3H),2.10(s,3H),1.45(s,3H),1.35(s,3H),0.92-0.85(m,1H).
制备实施例六(手性化合物的合成:化合物编号15-22)
从天然来源易得的原料(R)-香芹酮(10.0g,66.6mmol)出发,和L-脯氨酸的锂盐(810mg,6.66mmol)放入圆底烧瓶中,再缓慢加入TMSCN(8.86ml*2,66.6mmol*2),所得悬浮液室温搅拌12小时后,再补加1eqTMSCN,混合物再在室温搅拌12小时。TLC显示原料几乎反应尽,加入100ml THF稀释,和100ml 1M盐酸,室温搅拌1小时,随后加入水稀释,乙醚萃取,有机相用饱和食盐水洗涤,无水硫酸钠干燥,浓缩后得到中间体177,直接下一步。三氧化铬(13.9g,139.2mmol)缓慢加入到乙酸酐(54ml)中,混合物室温搅拌至完全溶解,随后把所得的铬酸试剂滴加到中间体177的-55℃的二氯甲烷溶液中,保持此温度下搅拌半小时。TLC显示原料反应尽,加入甲醇淬灭,水稀释,二氯甲烷萃取,有机相用饱和碳酸氢钠水溶液洗涤,浓缩。柱层析分离(石油醚/乙酸乙酯(v/v)=10/1),得到产物黄色油状物15-1(7.59g,两步产率65%):1H NMR(CDCl3,300MHz)δ4.87(s,1H),4.77(s,1H),2.78-2.32(m,5H),2.06(s,3H),1.68(s,3H).
化合物15-1(9.64g,55.02mmol)和七水氯化亚铈(20.5g,55.02mmol)溶于甲醇中,冷至冰水浴中,小心加入硼氢化钠(2.1g,55.02mmol),混合物搅拌30分钟原料消失。加入丙酮淬灭,乙酸乙酯稀释,有机相用水洗,饱和食盐水洗,干燥,浓缩,柱层析(石油醚/乙酸乙酯(v/v)=10/1)分离纯化,得到无色透明油状物为产物15-2(11.14g,产率99%):1H NMR(CDCl3,300MHz)δ4.77(s,1H),4.72(s,1H),4.19(d,J=5.7Hz,1H),2.73(d,J=7.2Hz,1H),2.30-2.08(m,4H),2.06(s,3H),1.71(s,3H),1.49(dd,J=12.6,22.8Hz,1H).化合物24(11.14g,62.86mmol)溶于DMF中加入咪唑(8.60g,125.71mmol),DMAP(cat.),搅拌5min后加入TBSCl(18.95g,125.71mmol),混合物室温搅拌过夜。次日加入水淬灭,乙酸乙酯萃取。有机相用饱和食盐水洗,干燥浓缩。柱层析纯化(石油醚:乙酸乙酯(v/v)=25:1)得到化合物15-3无色透明油状物(产率98%):1H NMR(CDCl3,300MHz)δ4.75(s,1H),4.71(s,1H),4.24(brs,1H),2.30-2.01(m,4H),1.99(s,3H),1.69(s,3H),1.49(dd,J=12.6,22.8Hz,1H),0.88(s,9H),0.09(s,3H),0.07(s,3H).
干冰丙酮浴下化合物15-3(3.55g,10.94mmol)的THF溶液中滴加DIBAL-H(24.10ml,24.10mmol),滴毕后升至室温搅拌2h。TLC监测原料反应尽,加入饱和酒石酸钠钾水溶液淬灭,混合物升至室温搅拌,二氯甲烷萃取,无水硫酸钠干燥,浓缩,柱层析分离(石油醚/乙酸乙酯(v/v)=25/1)得到产物黄色油状物15-4(14.75g,产率90%):1H NMR(CDCl3,300MHz)δ10.15(s,1H),4.71(s,2H),4.34(brs,1H),2.51(d,J=14.4Hz,1H),2.16(s,3H),2.11-1.84(m,3H),1.74(s,3H),1.49(dd,J=12.6,22.8Hz,1H),0.90(s,9H),0.14(s,3H),0.12(s,3H).
碘代物267(656mg,2.45mmol)溶于干燥的THF中,冷至-30℃,滴加2M异丙基氯化镁的THF溶液(1.5ml,2.45mmol),此温下搅拌30分钟,随后加入化合物15-4(240mg,0.82mmol)的THF溶液,升温至室温搅拌30分钟,随后加入饱和氯化铵溶液淬灭。乙酸乙酯萃取,有机相用饱和食盐水洗涤,无水硫酸钠干燥,浓缩,直接下一步。粗品15-5溶于二氯甲烷中,,0℃加入DMP(519mg,1.23mmol),升至室温搅拌过夜。次日加入饱和硫代硫酸钠溶液/饱和碳酸氢钠溶液=1/1淬灭,二氯甲烷萃取,饱和食盐水洗涤,浓缩,柱层析纯化(石油醚/乙酸乙酯(v/v)=25/1),得到产物15-6(157mg,两步产率45%)。1H NMR(CDCl3,300MHz)δ4.73(s,2H),4.29(s,1H),2.36(dt,J=7.8,1.8Hz,1H),2.30(s,3H),2.26-1.97(m,3H),1.72(s,6H),1.68(s,6H),1.58(td,J=12.6,10.2Hz,1H),0.88(s,9H),0.08(s,6H).
化合物15-6(1.50g,3.46mmol)溶于甲苯(60.0ml)和甲醇(15.0ml)中,反应混合物加热至外温80℃下回流过夜。次日浓缩柱层析分离(石油醚/乙酸乙酯(v/v)=10/1),得到产物15-7(黄色油状物,1.21g,产率86%)。1H NMR(CDCl3,300MHz)δ4.71(s,2H),3.88(dd,J=6.0,12.0Hz,1H),3.75(s,3H),2.52(dd,J=3.0,12.0Hz,1H),2.20(s,3H),2.15-1.99(m,3H),1.80-1.74(m,1H),1.69(s,3H),1.36(td,J=12.6,10.2Hz,1H),1.19(s,3H),0.88(s,9H),0.09(s,3H),0.07(s,3H).
向0℃下1M的LHMDS(2.00ml,2.00mmol)THF溶液中滴加化合物15-7(78.00mg,0.19mmol)的THF溶液,升至室温搅拌4h,快速加热烟酰氯盐酸盐,室温搅拌2h。TLC检测原料反应彻底,加入乙酸淬灭,水稀释,二氯甲烷萃取,无水硫酸钠干燥,浓缩。柱层析纯化(石油醚/丙酮(v/v)=3/1),得到重要中间体15-8白色固体(41.00mg,两步产率45%)。1H NMR(CDCl3,300MHz)δ9.06(d,J=1.2Hz,1H),8.75(d,J=3.6Hz,1H),8.19(d,J=8.4Hz,1H),7.45(dd,J=4.8,8.1Hz,1H),6.50(s,1H),4.89(s,2H),4.03(dd,J=10.8,4.8Hz,1H),2.71(dd,J=12.3,3.6Hz,1H),2.28(d,J=13.5Hz,1H),2.13(t,J=12.9Hz,1H),1.88(d,J=13.8Hz,1H),1.76(s,3H),1.44(q,J=12.9Hz,1H),1.34(s,3H),1.31-1.23(m,1H),0.96(s,9H),0.07(s,3H),0.04(s,3H).
化合物15-8(134mg,0.279mmol)溶于冰醋酸(7.4ml)和水(0.03ml)中,加入醋酸银(100mg,0.594mmol)和碘(83mg,0.327mmol),室温搅拌过夜。次日加入水,乙酸乙酯萃取,有机相用饱和食盐水洗涤,浓缩抽干,柱层析分离(二氯甲烷/甲醇(v/v)=25/1),得到化合物15-9,包含一对非对映异构体15-9-a(33mg)和15-9-b(44mg)。15-9-a:1H NMR(CDCl3,400MHz)δ9.03(d,J=2.8Hz,1H),8.73(d,J=4.8Hz,1H),8.16(dd,J=2.8,10.4Hz,1H),7.44(dd,J=6.8,11.2Hz,1H),6.44(s,1H),4.08(dd,J=12.0,32.0Hz,2H),4.00(dd,J=4.0,8.0Hz,1H),2.68(dd,J=4.0,16.0Hz,1H),2.21(d,J=16.0Hz,1H),2.11(s,3H),2.01(d,J=12.0Hz,1H),1.72(t,J=12.0Hz,1H),1.37(dd,J=12.0,24.0Hz,1H),1.31(s,3H),1.20(s,3H),1.15(dd,J=8.0,24.0Hz,1H),0.95(s,9H),0.19(s,3H),0.14(s,3H).
15-9-b:1H NMR(CDCl3,400MHz)δ9.05(s,1H),8.75(d,J=4.0Hz,1H),8.18(d,J=8.0Hz,1H),7.45(dd,J=4.0,8.0Hz,1H),6.43(s,1H),4.07(dd,J=12.0,32.0Hz,2H),3.98(dd,J=4.0,8.0Hz,1H),2.66(dd,J=4.0,16.0Hz,1H),2.36(d,J=16.0Hz,1H),2.12(s,3H),1.89(d,J=12.0Hz,1H),1.70(t,J=12.0Hz,1H),1.37-1.26(m,2H),1.32(s,3H),1.22(s,3H),0.95(s,9H),0.19(s,3H),0.14(s,3H).
乙酰氯(0.06ml,0.6mmol)滴加到0.7ml甲醇中,混合物在室温搅拌5分钟,随后加入化合物15-9(33mg,0.060mmol)的甲醇溶液,室温下搅拌1小时。浓缩,直接下一步。粗品溶于二氯甲烷中,加入催化量DMAP,三乙胺(0.09ml,0.60mmol),乙酸酐(0.04ml,0.30mmol),室温搅拌过夜。TLC监测反应完全,加入水淬灭,乙酸乙酯萃取,无水硫酸钠干燥,浓缩,柱层析分离纯化(二氯甲烷/甲醇(v/v)=50/1)得到化合物黄色固体15-10(产率80%),由于上一步15-9分为15-9-a和15-9-b,得到相对应15-10-a,15-10-a’和15-10-b,15-10-b’。
15-10-a:1H NMR(CDCl3,400MHz)δ9.11(s,1H),8.79(s,1H),8.22(d,J=8.0Hz,1H),7.48(s,1H),6.55(s,1H),5.33(dd,J=4.0,8.0Hz,1H),4.47(dd,J=12.0,100.0Hz,2H),2.82(dd,J=4.0,8.0Hz,1H),2.23-1.86(m,3H),2.22(s,3H),2.11(s,3H),2.05(s,3H),1.59-1.29(m,2H),1.52(s,3H),1.45(s,3H).
15-10-a’:1H NMR(CDCl3,300MHz)δ9.02(d,J=1.8Hz,1H),8.72(d,J=4.5Hz,1H),8.16(td,J=1.5,7.8Hz,1H),7.42(dd,J=5.1,8.4Hz,1H),6.55(s,1H),5.38(dd,J=5.1,11.7Hz,1H),4.43(s,2H),2.98(s,1H),2.62(d,J=13.5Hz,1H),2.50-1.12(m,4H),2.30(s,3H),2.23(s,3H),2.14(s,3H),1.66(s,3H),1.49(s,3H).
15-10-b:1H NMR(CDCl3,400MHz)δ9.08(s,1H),8.76(d,J=4.0Hz,1H),8.19(d,J=4.0Hz,1H),7.46(dd,J=4.0,8.0Hz,1H),6.55(s,1H),5.29(dd,J=4.0,8.0Hz,1H),4.44(dd,J=8.0,48.0Hz,2H),2.79(dd,J=4.0,8.0Hz,1H),2.38-1.97(m,3H),2.19(s,3H),2.10(s,3H),2.03(s,3H),1.57-1.28(m,2H),1.47(s,3H),1.43(s,3H).
15-10-b’:1H NMR(CDCl3,300MHz)δ9.02(d,J=1.8Hz,1H),8.72(d,J=4.5Hz,1H),8.16(td,J=1.5,7.8Hz,1H),7.42(dd,J=5.1,8.4Hz,1H),6.55(s,1H),5.38(dd,J=5.1,11.7Hz,1H),4.41(dd,J=11.7,67.2Hz,2H),2.98(s,1H),2.62(d,J=13.5Hz,1H),2.50-1.12(m,4H),2.30(s,3H),2.23(s,3H),2.14(s,3H),1.66(s,3H),1.49(s,3H).
化合物15-10(11mg,0.021mmol)(依次15-10-a,15-10-a’,15-10-b,15-10-b’)和七水氯化亚铈(55mg,0.147mmol)溶于甲醇中,冷至-78℃小心加入硼氢化钠(5.6mg,0.147mmol),混合物搅拌30分钟原料消失。加入丙酮淬灭,乙酸乙酯稀释,有机相用水洗,饱和食盐水洗,干燥,浓缩,柱层析(二氯甲烷/甲醇(v/v)=50/1)分离纯化,得到淡黄固体为最终产物15(8.5mg,产率78%):1HNMR(CDCl3,300MHz)δ9.01(s,1H),8.69(d,J=4.8Hz,1H),8.09(dd,J=1.8,8.1Hz,1H),7.39(dd,J=4.8,8.1Hz,1H),6.49(s,1H),5.08(dd,J=4.8,12.0Hz,1H),4.56-4.34(m,4H),2.34-1.99(m,2H),2.17(s,3H),2.07(s,3H),1.99(s,3H),1.89(t,J=12.0Hz,1H),1.58-1.51(m,1H),1.48(s,3H),1.30(s,3H),1.13(dd,J=13.2,26.1Hz,1H).
和16:1HNMR(CDCl3,300MHz)δ8.97(s,1H),8.67(dd,J=1.2,4.5Hz,1H),8.09(td,J=1.8,7.8Hz,1H),7.39(dd,J=4.8,8.1Hz,1H),6.39(s,1H),5.04(dd,J=4.8,12.0Hz,1H),4.78(d,J=9.6Hz,1H),4.45(dd,J=12.3,70.5Hz,2H),2.59-1.24(m,6H),2.22(s,3H),2.08(s,3H),1.92(s,3H),1.63(s,3H),1.50(s,3H).
和17:1HNMR(CDCl3,300MHz)δ9.00(d,J=2.1Hz,1H),8.68(dd,J=0.9,4.5Hz,1H),8.09(td,J=1.5,8.4Hz,1H),7.40(dd,J=4.8,8.1Hz,1H),6.49(s,1H),5.06(dd,J=5.1,12.3Hz,1H),4.52-4.32(m,4H),2.39-2.23(m,2H),2.16(s,3H),2.03(s,3H),1.99(s,3H),2.02-1.85(m,2H),1.54-1.15(m,2H),1.48(s,3H),1.24(s,3H).
和18:1HNMR(CDCl3,300MHz)δ8.97(s,1H),8.67(dd,J=1.2,4.5Hz,1H),8.09(td,J=1.8,7.8Hz,1H),7.39(dd,J=4.8,8.1Hz,1H),6.39(s,1H),5.03(dd,J=4.8,12.0Hz,1H),4.76(d,J=9.6Hz,1H),4.51-4.34(m,3H),2.59-1.24(m,6H),2.19(s,3H),2.11(s,3H),2.03(s,3H),1.56(s,3H),1.49(s,3H).
用同样方法合成以下化合物:
将制备实施例六中的化合物R-香芹酮替换为S-香芹酮,制备得到化合物19;
将制备实施例六中的化合物R-香芹酮替换为S-香芹酮,制备得到化合物20;
将制备实施例六中的化合物R-香芹酮替换为S-香芹酮,制备得到化合物21;
将制备实施例六中的化合物R-香芹酮替换为S-香芹酮,制备得到化合物22。
制备实施例七(化合物编号ZY529I-O)
向(S)-MeCBS(5.0mg,0.015mmol)的THF溶液中,小心滴加BH3-Me2S(0.006ml,0.046mmol),室温搅拌10min,冷至-30℃,再向所得混合液中加入从制备实施例七中获得的化合物15-10-a(8.0mg,0.015mmol)的THF溶液,低温下搅拌2小时。TLC监测原料反应彻底,加入甲醇淬灭,水稀释,二氯甲烷萃取,浓缩,柱层析分离(二氯甲烷/甲醇(v/v)=50/1),得到产物为23(4.0mg,产率50%):1HNMR(CDCl3,300MHz)δ9.03(s,1H),8.69(dd,J=4.8Hz,1H),8.11(d,J=7.8Hz,1H),7.40(dd,J=4.8,7.8Hz,1H),6.49(s,1H),5.04(dd,J=3.9,11.4Hz,1H),4.65(s,1H),4.48(dd,J=12.0,65.4Hz,2H),2.82(s,1H),2.41-2.37(m,1H),2.10-1.56(m,5H),2.18(s,3H),2.10(s,3H),1.92(s,3H),1.50(s,3H),1.49(s,3H).
用同样方法合成以下化合物:
将制备实施例七中的化合物15-10-a替换为15-10-b,制备得到化合物24;
将制备实施例七中的化合物15-10-a替换为其对映异构体19-10-a,制备得到化合物25;
将制备实施例6中的化合物15-10-a替换为15-10-b的对映异构体19-10-b,制备得到化合物26。
制备实施例八(化合物编号28和29)
乙酰氯(0.20ml,1.83mmol)滴加到2.5ml甲醇中,混合物在室温搅拌5分钟,随后加入化合物15-9-b(102.0mg,0.18mmol)的甲醇溶液,室温下搅拌1小时。浓缩,直接下一步。粗品溶于二氯甲烷中,三乙胺(0.28ml,1.83mmol),乙酸酐(0.13ml,0.92mmol),室温搅拌2小时。TLC监测反应完全,加入水淬灭,二氯甲烷萃取,浓缩,柱层析分离纯化(二氯甲烷/甲醇(v/v)=25/1)得到化合物黄色固体为28-1-b和28-1-b’的两个非对映异构体的混合物,以及28-2-b和28-2-b’的两个非对映异构体的混合物共包含四个化合物28-1-b,28-1-b’,28-2-b,28-2-b’(产率75%)。
直接把28-1-b和28-1-b’混合物以及28-2-b和28-2-b’的混合物分别进行下一步luche还原反应,下一步的反应选择性地与28-1-b,28-2-b反应,所以可以得到纯品28和29。举例:混合物28-1-b和28-1-b’(共4.0mg,0.01mmol)和七水氯化亚铈(22mg,0.058mmol)溶于无水乙醇中,冷至-78℃小心加入硼氢化钠(3.0mg,0.058mmol),混合物搅拌30分钟原料消失。加入丙酮淬灭,乙酸乙酯稀释,有机相用水洗,饱和食盐水洗,干燥,浓缩,柱层析(二氯甲烷/甲醇(v/v)=50/1)分离纯化,得到淡黄固体为最终产物28(4.0mg,产率38%):1HNMR(CDCl3,300MHz)δ9.05(s,1H),8.73(s,1H),8.19(d,J=7.8Hz,1H),7.50(s,1H),6.52(s,1H),5.08(dd,J=4.8,11.7Hz,1H),4.46(d,J=9.9Hz,1H),4.05(dd,J=11.4,29.7Hz,2H),2.42(d,J=13.5Hz,1H),2.17(s,3H),2.13(s,3H),2.09-1.31(m,5H),1.31(s,3H),1.21(s,3H).
用同样方法合成以下化合物:
将制备实施例八中的化合物28-1-b替换为28-2-b,制备得到化合物29。
制备实施例九(化合物编号27)
化合物15-9-b和七水氯化亚铈(96mg,0.173mmol)溶于甲醇中,冷至-78℃小心加入硼氢化钠(46mg,1.21mmol),混合物搅拌30分钟原料消失。加入丙酮淬灭,乙酸乙酯稀释,有机相用水洗,饱和食盐水洗,干燥,浓缩,柱层析(二氯甲烷/甲醇(v/v)=50/1)分离纯化,得到淡黄固体为产物27-1(88.0mg,产率92%):1HNMR(CDCl3,300MHz)δ8.96(d,J=1.8Hz,1H),8.65(dd,J=1.8,5.1Hz,1H),8.06(td,J=1.8,8.1Hz,1H),7.39(td,J=0.6,8.1Hz,1H),6.35(s,1H),4.45(s,1H),4.42(s,1H),3.99(dd,J=11.4,47.4Hz,2H),3.75(dd,J=4.5,11.1Hz,1H),2.42(d,J=13.5Hz,1H),2.09(s,3H),1.80-1.70(m,3H),1.37-1.08(m,2H),1.18(s,3H),0.90(s,9H),0.14(s,3H),0.09(s,3H).
化合物27-1(62mg,0.11mmol)溶于二氯甲烷中,零度下加入三乙胺(0.18ml,1.11mmol),再加入TMSCl(0.05ml,0.19mmol),此温下搅拌3.5小时,加入饱和碳酸氢钠水溶液淬灭,二氯甲烷萃取,旋干,柱层析分离(二氯甲烷/甲醇(v/v)=50/1)得到产物27-2(白色固体,产率70%):1HNMR(CDCl3,300MHz)δ8.97(s,1H),8.65(s,1H),8.07(d,J=8.1Hz,1H),7.38(t,J=4.8Hz,1H),6.27(s,1H),4.38(d,J=9.3Hz,1H),4.04(dd,J=11.4,41.1Hz,2H),3.74(dd,J=4.8,11.7Hz,1H),2.18(d,J=13.2Hz,1H),2.09(s,3H),1.80-1.70(m,3H),1.46-0.98(m,2H),1.16(s,3H),1.12(s,3H),0.92(s,9H),0.22(s,9H),0.09(s,3H),0.02(s,3H).
化合物27-2(289mg,0.07mmol)溶于二氯甲烷中,加入DMAP(cat.),滴加三乙胺(1.8ml,5.49mmol),再滴加乙酸酐(1.8ml,5.49mmol),室温搅拌4小时。加入水淬灭,二氯甲烷萃取,浓缩,柱层析分离(二氯甲烷/甲醇(v/v)=50/1),得到产物27-3(127mg,产率42%):1HNMR(CDCl3,300MHz)δ8.99(s,1H),8.67(s,1H),8.08(d,J=7.8Hz,1H),7.39(s,1H),6.29(s,1H),4.47(dd,J=11.4,41.1Hz,2H),4.38(d,J=9.3Hz,1H),3.74(dd,J=4.8,11.7Hz,1H),2.37-2.15(m,2H),2.09(s,3H),1.96(s,3H),1.84-1.76(m,2H),1.42(s,3H),1.39-1.25(m,1H),1.20(s,3H),1.11-0.94(m,1H),0.86(s,9H),0.20(s,9H),0.11(s,3H),0.06(s,3H).
化合物27-3溶于乙腈中,加入0.8ml 40%氢氟酸,滴毕室温搅拌2.5小时,加入饱和碳酸氢钠水溶液淬灭,乙酸乙酯萃取,有机相用饱和食盐水洗涤,浓缩,柱层析分离(二氯甲烷/甲醇(v/v)=25/1),得到最终产物27(白色固体,产率69%):1HNMR(CDCl3,300MHz)δ9.02(s,1H),8.71(s,1H),8.14(d,J=7.8Hz,1H),7.46(s,1H),6.55(s,1H),4.53-4.33(m,4H),3.85(dd,J=4.8,11.7Hz,1H),2.33(d,J=14.1Hz,1H),2.09(s,3H),2.04(s,3H),1.98-1.50(m,5H),1.49(s,3H),1.25(s,3H).
制备实施例十(化合物编号30)
-78℃下向21(6.0mg,0.011mmol)的THF溶液中滴加正丁基锂(0.01ml,0.011mmol),此温下搅拌半小时,随后加入对溴苯甲酰氯,继续搅拌1小时,加入饱和碳酸氢钠溶液淬灭,升至室温二氯甲烷萃取,浓缩,柱层析分离(二氯甲烷/甲醇(v/v)=50/1)得到产物30(白色粉末,产率80%):1HNMR(CDCl3,300MHz)δ9.00(s,1H),8.68(d,J=5.1Hz,1H),8.09(d,J=8.4Hz,1H),7.89(d,J=8.4Hz,2H),7.57(d,J=8.4Hz,2H),7.39(dd,J=4.8,8.1Hz,1H),6.48(s,1H),6.10(d,J=10.2Hz,1H),5.10(dd,J=4.8,11.7Hz,1H),4.38(dd,J=11.7,48.3Hz,2H),2.29-1.18(m,4H),2.18(s,3H),2.04(s,3H),1.91(s,3H),1.60-1.24(m,2H),1.42(s,3H),1.41(s,3H).
试验实施例1
对ACAT2活性的抑制作用试验实施例
1.试验目的:
通过利用荧光标记固醇测定ACAT2活性方法,检测所述的Pyripyropene A结构的类似物在完整细胞水平对ACAT2活性的抑制作用。
2.测试原理:
用不同浓度的化合物,对含NBD22-荧光标记固醇的酯合成的抑制,导致荧光强度差异变化,从而绘制抑制曲线,计算IC50。
3.实验过程:
HepG2细胞以1.5×104个每孔的起始密度在96孔板中培养24小时后,加入胆固醇混合物混匀后,继续培养24小时,然后加入终浓度为0.5μg/ml的NBD22-荧光标记固醇,以及终浓度梯度为0、0.008、0.04、0.2、1和5μM的化合物,每一浓度设三重复孔,再培养6小时后使用荧光分析仪(E488,A535)测定荧光强度,将荧光强度值对化合物不同浓度作图并获得IC50。
4.实验结果:(以7、8、13、21等十四个化合物为例,但不局限于这些化合物)
表1.化合物对ACAT2活性的抑制作用
化合物编号 | IC<sub>50</sub>(μM)或%抑制率 |
Pyripyropene A | 0.179 |
2 | 104% |
3 | 90% |
6 | 90% |
7 | 0.152 |
8 | 0.086 |
13 | 0.023 |
14 | 0.103 |
15 | 0.831 |
16 | 0.245 |
21 | 0.078 |
22 | 0.086 |
26 | 0.433 |
27 | 0.069 |
29 | 0.081 |
注:IC50为样品化合物对ACAT2活性的50%抑制评价。%抑制率是以PyripyropeneA(0.2μM)为100%抑制对照时的相对抑制率。
结果表明该类化合物具有对ACAT2的抑制活性,而且该类ACAT2抑制剂与已发现的唯一一个ACAT2的特异抑制剂Pyripyropene A相比,抑制活性有明显提高。
试验实施例2
对ACAT2活性的抑制作用的选择性系数试验实施例
1.试验目的:
通过利用胆固醇氧化酶法测定ACAT活性,检测所述的Pyripyropene A结构的类似物在完整细胞水平对ACAT2和ACAT1的抑制作用,而获得对ACAT2具有高选择性的化合物。
2.测试原理:
通过利用HepG2细胞测定不同浓度的化合物对ACAT1或ACAT2活性的抑制作用,获得IC50来计算SI(ACAT1-IC50/ACAT2-IC50)。
3.实验过程:
HepG2细胞以4×105个每孔的起始密度在6孔板中培养24小时后,更换培养基并加入10μg/ml胆固醇以及不同浓度的化合物,继续培养9小时,利用Cholesterol Assay kit测定细胞胆固醇量。
4.实验结果:(以编号为7、8、13、14、21和22等6个化合物为例,但不局限于这些化合物)
表2.化合物对ACAT活性抑制的选择性
化合物编号 | ACAT1-IC<sub>50</sub>(μM) | ACAT2-IC<sub>50</sub>(μM) | SI |
7 | 107.7 | 0.147 | 733 |
8 | 64.71 | 0.061 | 1076 |
13 | 17.77 | 0.012 | 1496 |
14 | 153.7 | 0.129 | 1191 |
21 | 56.66 | 0.055 | 1035 |
22 | 87.35 | 0.090 | 971 |
结果表明该类化合物对ACAT2活性抑制具有高选择性(SI>733,HepG2cell),且远高于Pyripyropene A的(SI>200,AC29CHO cell)。
Claims (11)
1.一类通式(I)所示的Pyripyropene A的类似物,
其中:
R1为甲基;
R2和R3其中一个为氢,另一个选自羟基、乙酰氧基或对位氰基取代的苯基羰基氧基团;
R4和R5中一个为氢、另一为
R6为3位吡啶基;
X为氧原子;
Y为氢;
W为羟基、氧代基团或对位卤素取代的苯基羰基氧;
为单键;
n=1。
2.如权利要求1所述的Pyripyropene A的类似物,其特征在于:Y为氢,n=1,X为氧,R1为甲基,为单键,R3、R5为氢,W和Y构型保持一致,R2、R4、R1的构型按照如下通式(IV)中所示的绝对立体构型:
其中,在通式(IV)中,其他取代基的定义与权利要求1的通式(I)中的定义相同。
3.如权利要求1所述的Pyripyropene A的类似物,其特征在于选自如下的化合物:
4.权利要求1-3中任一项所述Pyripyropene A的类似物的制备方法,其反应路线如下:
包括以下步骤:
(1)化合物31与化合物267以及异丙基格氏试剂在THF中偶联反应,再被氧化后形成化合物32;
(2)化合物32经过溶剂解反应得到化合物33;
(3)化合物33被LHMDS攫氢烯醇化,随后和R6COCl发生C-酰基化关环得到化合物34;
(4)化合物34在酸性条件下发生脱TBS保护基反应,再和(R12)2CO或R12COCl发生上酰基反应得到不同取代的化合物Ia;
进一步的,
(5)化合物Ia经过Luche还原得到化合物Ic;
或
(6)化合物Ia经过CBS选择性还原得到特定构型的化合物Ie;
或
(7)化合物Ic与酰氯R13COCl反应制得化合物Id;
其中,R2、R3、R4、R5、R6、n的定义同权利要求1;R12为甲基或对位氰基取代的苯基;R13为对位卤素取代的苯基;R14和R15中一个为氢,另一个为叔丁基二甲基硅基氧基。
5.如权利要求4所述的Pyripyropene A的类似物的制备方法,其特征在于:
步骤(1)中所述偶联反应所用溶剂为四氢呋喃;反应温度为-30℃至室温;
步骤(2)中所述溶剂解反应所用溶剂选自甲苯和甲醇;反应温度为80℃;
步骤(3)中所述C-酰基化关环反应所用溶剂选自非质子性溶剂;反应温度为0℃到室温;
步骤(4)中所述脱保护基TBS反应及上酰基反应所用溶剂选自非质子性溶剂;反应温度为室温;
步骤(5)中所述Luche还原反应所用溶剂选自醇类溶剂;反应温度为-78℃;
步骤(6)中所述CBS选择性还原反应所用溶剂选自非质子性溶剂;反应温度选自-78℃或-30℃。
6.如权利要求5所述的Pyripyropene A的类似物的制备方法,其特征在于:步骤(3)中所述C-酰基化关环反应所用溶剂为四氢呋喃。
7.如权利要求5所述的Pyripyropene A的类似物的制备方法,其特征在于:步骤(4)中所述脱保护基TBS反应及上酰基反应所用溶剂为二氯甲烷。
8.如权利要求5所述的Pyripyropene A的类似物的制备方法,其特征在于:步骤(5)中所述Luche还原反应所用溶剂选自甲醇或乙醇。
9.如权利要求5所述的Pyripyropene A的类似物的制备方法,其特征在于:步骤(6)中所述CBS选择性还原反应所用溶剂为四氢呋喃。
10.如权利要求1-3中任一项所述的Pyripyropene A的类似物在制备胆固醇酰基转移酶2高选择性抑制剂的药物中的用途。
11.如权利要求1-3中任一项所述的Pyripyropene A的类似物在制备治疗动脉粥样硬化症的药物中的用途。
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