CN103601676A - 高对映选择性n-乙酰基-2-取代-2,3-二氢-4-喹啉酮类化合物的合成方法 - Google Patents
高对映选择性n-乙酰基-2-取代-2,3-二氢-4-喹啉酮类化合物的合成方法 Download PDFInfo
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- 239000002994 raw material Substances 0.000 claims abstract description 19
- LOUPRKONTZGTKE-WZBLMQSHSA-N Quinine Chemical compound C([C@H]([C@H](C1)C=C)C2)C[N@@]1[C@@H]2[C@H](O)C1=CC=NC2=CC=C(OC)C=C21 LOUPRKONTZGTKE-WZBLMQSHSA-N 0.000 claims abstract description 18
- UMGDCJDMYOKAJW-UHFFFAOYSA-N aminothiocarboxamide Natural products NC(N)=S UMGDCJDMYOKAJW-UHFFFAOYSA-N 0.000 claims abstract description 16
- 235000001258 Cinchona calisaya Nutrition 0.000 claims abstract description 9
- LOUPRKONTZGTKE-UHFFFAOYSA-N cinchonine Natural products C1C(C(C2)C=C)CCN2C1C(O)C1=CC=NC2=CC=C(OC)C=C21 LOUPRKONTZGTKE-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229960000948 quinine Drugs 0.000 claims abstract description 9
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- 150000002576 ketones Chemical class 0.000 claims abstract description 5
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Natural products NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims abstract description 4
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims abstract description 4
- 238000006243 chemical reaction Methods 0.000 claims description 24
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 18
- 150000001875 compounds Chemical class 0.000 claims description 13
- 238000006957 Michael reaction Methods 0.000 claims description 7
- XYOVOXDWRFGKEX-UHFFFAOYSA-N azepine Chemical compound N1C=CC=CC=C1 XYOVOXDWRFGKEX-UHFFFAOYSA-N 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 7
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid group Chemical group C(C1=CC=CC=C1)(=O)O WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 3
- GETTZEONDQJALK-UHFFFAOYSA-N (trifluoromethyl)benzene Chemical compound FC(F)(F)C1=CC=CC=C1 GETTZEONDQJALK-UHFFFAOYSA-N 0.000 claims description 2
- 125000006276 2-bromophenyl group Chemical group [H]C1=C([H])C(Br)=C(*)C([H])=C1[H] 0.000 claims description 2
- 125000001622 2-naphthyl group Chemical group [H]C1=C([H])C([H])=C2C([H])=C(*)C([H])=C([H])C2=C1[H] 0.000 claims description 2
- 125000000175 2-thienyl group Chemical group S1C([*])=C([H])C([H])=C1[H] 0.000 claims description 2
- 125000006275 3-bromophenyl group Chemical group [H]C1=C([H])C(Br)=C([H])C(*)=C1[H] 0.000 claims description 2
- 125000004800 4-bromophenyl group Chemical group [H]C1=C([H])C(*)=C([H])C([H])=C1Br 0.000 claims description 2
- 125000002777 acetyl group Chemical group [H]C([H])([H])C(*)=O 0.000 claims description 2
- 125000001246 bromo group Chemical group Br* 0.000 claims description 2
- 238000004440 column chromatography Methods 0.000 claims description 2
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims description 2
- 230000035484 reaction time Effects 0.000 claims description 2
- 239000002904 solvent Substances 0.000 claims description 2
- 238000000746 purification Methods 0.000 abstract description 16
- 238000002360 preparation method Methods 0.000 abstract description 4
- 125000003118 aryl group Chemical group 0.000 abstract description 3
- 230000000844 anti-bacterial effect Effects 0.000 abstract description 2
- 239000002246 antineoplastic agent Substances 0.000 abstract description 2
- 229940041181 antineoplastic drug Drugs 0.000 abstract description 2
- 238000005966 aza-Michael addition reaction Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract description 2
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical group [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 abstract 1
- 125000000218 acetic acid group Chemical group C(C)(=O)* 0.000 abstract 1
- 125000000217 alkyl group Chemical group 0.000 abstract 1
- 239000003814 drug Substances 0.000 abstract 1
- 238000000926 separation method Methods 0.000 abstract 1
- 125000002088 tosyl group Chemical group [H]C1=C([H])C(=C([H])C([H])=C1C([H])([H])[H])S(*)(=O)=O 0.000 abstract 1
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- 238000005160 1H NMR spectroscopy Methods 0.000 description 2
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- 229940122938 MicroRNA inhibitor Drugs 0.000 description 2
- 238000005917 acylation reaction Methods 0.000 description 2
- 230000000975 bioactive effect Effects 0.000 description 2
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Chemical compound BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 238000011097 chromatography purification Methods 0.000 description 2
- 239000000543 intermediate Substances 0.000 description 2
- 229930014626 natural product Natural products 0.000 description 2
- GTDQGKWDWVUKTI-UHFFFAOYSA-N o-aminoacetophenone Chemical compound CC(=O)C1=CC=CC=C1N GTDQGKWDWVUKTI-UHFFFAOYSA-N 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- GRMBWHSWBPDLBU-UHFFFAOYSA-N 1-acetyl-2-methyl-2,3-dihydroquinolin-4-one Chemical compound C1=CC=C2N(C(C)=O)C(C)CC(=O)C2=C1 GRMBWHSWBPDLBU-UHFFFAOYSA-N 0.000 description 1
- DKQIZRNNADMWTR-UHFFFAOYSA-N 3-(2-aminophenyl)-1-phenylprop-2-en-1-one Chemical class NC1=CC=CC=C1C=CC(=O)C1=CC=CC=C1 DKQIZRNNADMWTR-UHFFFAOYSA-N 0.000 description 1
- HETSDWRDICBRSQ-UHFFFAOYSA-N 3h-quinolin-4-one Chemical compound C1=CC=C2C(=O)CC=NC2=C1 HETSDWRDICBRSQ-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000010933 acylation Effects 0.000 description 1
- 238000007259 addition reaction Methods 0.000 description 1
- 230000000078 anti-malarial effect Effects 0.000 description 1
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- 229940088710 antibiotic agent Drugs 0.000 description 1
- 239000003430 antimalarial agent Substances 0.000 description 1
- 150000003934 aromatic aldehydes Chemical class 0.000 description 1
- 125000004429 atom Chemical group 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 125000005605 benzo group Chemical group 0.000 description 1
- WZJYKHNJTSNBHV-UHFFFAOYSA-N benzoquinoline Natural products C1=CN=C2C3=CC=CC=C3C=CC2=C1 WZJYKHNJTSNBHV-UHFFFAOYSA-N 0.000 description 1
- 230000004071 biological effect Effects 0.000 description 1
- 230000007321 biological mechanism Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000031709 bromination Effects 0.000 description 1
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- 229910052794 bromium Inorganic materials 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 125000004185 ester group Chemical group 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
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- 125000002524 organometallic group Chemical group 0.000 description 1
- 125000005504 styryl group Chemical group 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- 230000010304 tumor cell viability Effects 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D215/00—Heterocyclic compounds containing quinoline or hydrogenated quinoline ring systems
- C07D215/02—Heterocyclic compounds containing quinoline or hydrogenated quinoline ring systems having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen atoms or carbon atoms directly attached to the ring nitrogen atom
- C07D215/16—Heterocyclic compounds containing quinoline or hydrogenated quinoline ring systems having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen atoms or carbon atoms directly attached to the ring nitrogen atom with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
- C07D215/20—Oxygen atoms
- C07D215/22—Oxygen atoms attached in position 2 or 4
- C07D215/233—Oxygen atoms attached in position 2 or 4 only one oxygen atom which is attached in position 4
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D409/00—Heterocyclic compounds containing two or more hetero rings, at least one ring having sulfur atoms as the only ring hetero atoms
- C07D409/02—Heterocyclic compounds containing two or more hetero rings, at least one ring having sulfur atoms as the only ring hetero atoms containing two hetero rings
- C07D409/04—Heterocyclic compounds containing two or more hetero rings, at least one ring having sulfur atoms as the only ring hetero atoms containing two hetero rings directly linked by a ring-member-to-ring-member bond
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Nitrogen Condensed Heterocyclic Rings (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
高对映选择性N-乙酰基-2-取代-2,3-二氢-4-喹啉酮类化合物的合成方法,原料为1-芳基-3-芳基或烷基-2,3-不饱和酮,在0.2当量奎宁衍生的硫脲类化合物有机小分子催化剂的作用下,经(1)式所示分子内6-endo-trig氮杂迈克尔加成反应4天后,经分离提纯得到N-乙酰基-2-取代-2,3-二氢-4-喹啉酮类物质,奎宁衍生的硫脲类化合物有机小分子催化剂结构如下所示:其中,R1为溴原子或氢原子,R2为芳基或烷基,R3为对甲苯磺酰基(Ts)或乙酰基(Ac)。与现有制备方法比较,本方法原料制备简单,得到的产物对映选择性高的多,该类产物具有很好的抗肿瘤药物和抗菌药物方面的用途。
Description
技术领域
本发明涉及一种N-乙酰基-2-取代-2,3-二氢-4-喹啉酮类化合物的合成方法。
背景技术
2-取代-2,3-二氢-4-喹啉酮类化合物(dihydroquinolinones,也名为Azaflavanones)是一类含氮苯并喹啉酮类结构,具有抗肿瘤活性(Zhang,S.-X et al.J.Med.Chem.2000,43,167)和抗疟疾活性(Patti,A.et al.J.Organomet.Chem.2012,716,216),可作为跨物种的microRNA抑制剂(Srivari Chandrasekhar et al.Bioorg.Med.Chem.Lett.22,2012,645–648),而且还是合成许多有重要生物活性天然产物的关键中间体(Ma,D.et al.J.Org.Chem.2003,68,442)。
由于这类结构骨架具有重要的生物活性,吸引了广大药物化学和合成化学工作者的研究兴趣,尝试通过发展合理的化学合成路线,一方面可以获得大量的苯并二氢-4-喹啉酮类化合物,可以弥补天然资源的不足,另一方面为解决化学生物学问题(诸如结构与活性关系,生物学作用机制)提供帮助。
目前化学合成2,3-二氢-4-喹啉酮的方法主要有两类,第一类是有机金属试剂对4-喹啉酮的不对称1,4-加成反应;第二类是邻氨基芳基亚甲基β-酮酯的分子内不对称氮杂迈克尔加成反应。第一类方法只能制备2-芳基-2,3-二氢-4-喹啉酮类化合物,不能制得2-烷基-2,3-二氢-4-喹啉酮类化合物;第二类方法必须在底物引入酯基,得到产物后再脱除,这不符合当前的步骤和原子经济性要求。最近,Rueping等报道了一种布伦斯特酸催化的氨基查尔酮衍生物分子内不对称aza-Michael加成反应(Rueping,M.;Moreth,S.A.;Bolte,M.Z.Naturforsch.(B)2012,67,1021),可以合成2-芳基-2,3-二氢-4-喹啉酮,但ee值只有49-63%,而且也不能得到2-烷基-2,3-二氢-4-喹啉酮类化合物。
R为芳基,M为Zn或B。
发明内容
解决的技术问题:本发明提供一种合成N-乙酰基-2-取代-2,3-二氢-4-喹啉酮类化合物的方法,反应产物对映选择性高。
技术方案:一种高对映选择性N-乙酰基-2-取代-2,3-二氢-4-喹啉酮类化合物的合成方法,原料为1-芳基-3-芳基或烷基-2,3-不饱和酮,在0.2当量奎宁衍生的硫脲有机小分子催化剂和0.6当量苯甲酸的共同作用,以甲苯为溶剂,经(1)式所示分子内6-endo-trig氮杂迈克尔加成反应2天后,经分离提纯得到N-乙酰基-2-取代-2,3-二氢-4-喹啉酮类物质,奎宁衍生的硫脲类化合物有机小分子催化剂结构如下所示:
其中,R1为溴原子或氢原子,R2为苯基,4-甲基苯基,联苯基,2-萘基,4-氯苯基,4-甲氧基苯基,4-溴苯基,4-三氟甲基苯,3-甲氧基苯基,3-溴苯基,2-溴苯基,2-噻吩基,2-苯乙烯基或者甲基,R3为乙酰基(Ac)。
分子内6-endo-trig氮杂迈克尔加成反应在甲苯溶剂中进行,反应温度为90℃,反应时间2天。
所述分离提纯方法为柱层析。
所述的反应底物1-芳基-3-芳基(或烷基)-2,3-不饱和酮(Ⅲ)或(Ⅳ)是由已知反应得到,如:由邻氨基苯乙酮I和芳香醛进行如(2)式所示Adol反应和酰化反应后提纯得到,或如(3)式所示由邻氨基苯乙酮经溴化再制成Vittig试剂,然后进行Vittig反应后提纯得到。
其中R1为溴或氢原子,R2为芳基或苯乙烯基,R3为甲基。
(2)式所示Adol反应和酰化反应产物可以是:1-(2-N-乙酰基-氨基苯基)-3-苯基-2,3-不饱和丙酮(Ⅲa)、1-(2-N-乙酰基-氨基苯基)-3-(4-甲基苯基)-2,3-不饱和丙酮(Ⅲb)、1-(2-N-乙酰基-氨基苯基)-3-联苯基-2,3-不饱和丙酮(Ⅲc)、1-(2-N-乙酰基-氨基苯基)-3-(2-萘基)-2,3-不饱和丙酮(Ⅲd)、1-(2-N-乙酰基-氨基苯基)-3-(4-氯苯基)-2,3-不饱和丙酮(Ⅲe)、1-(2-N-乙酰基-氨基苯基)-3-(4-甲氧基苯基)-2,3-不饱和丙酮(Ⅲf)、1-(2-N-乙酰基-氨基苯基)-3-(4-溴苯基)-2,3-不饱和丙酮(Ⅲg)、1-(2-N-乙酰基-氨基苯基)-3-(4-三氟甲基苯基)-2,3-不饱和丙酮(Ⅲh)、1-(2-N-乙酰基-氨基苯基)-3-(3-甲氧基苯基)-2,3-不饱和丙酮(Ⅲi)、1-(2-N-乙酰基-氨基苯基)-3-(3-溴苯基)-2,3-不饱和丙酮(Ⅲj)、1-(2-N-乙酰基-氨基苯基)-3-(2-溴苯基)-2,3-不饱和丙酮(Ⅲk)、1-(2-N-乙酰基-氨基苯基)-3-(2-噻吩基)-2,3-不饱和丙酮(Ⅲl)、1-(2-N-乙酰基-氨基苯基)-3-苯乙烯基-2,3-不饱和丙酮(Ⅲm)、1-(2-N-乙酰基-氨基-5-溴苯基)-3-(4-甲基苯基)-2,3-不饱和丙酮(Ⅲn)。
(3)式所示反应产物可以是1-(2-N-乙酰基-氨基苯基)-3-甲基-2,3-不饱和丙酮(Ⅳo)。
氮杂迈克尔加成反应产物可以是:N-乙酰基-2-苯基-2,3-二氢-4-喹啉酮(Ⅴa)、N-乙酰基-2-(4-甲基苯基)-2,3-二氢-4-喹啉酮(Ⅴb)、N-乙酰基-2-联苯基-2,3-二氢-4-喹啉酮(Ⅴc)、N-乙酰基-2-萘基-2,3-二氢-4-喹啉酮(Ⅴd)、N-乙酰基-2-(4-氯苯基)-2,3-二氢-4-喹啉酮(Ⅴe)、N-乙酰基-2-(4-甲氧基苯基)-2,3-二氢-4-喹啉酮(Ⅴf)、N-乙酰基-2-(4-溴苯基)-2,3-二氢-4喹啉-酮(Ⅴg)、N-乙酰基-2-(4-三氟甲基苯基)-2,3-二氢-4-喹啉酮(Ⅴh)、N-乙酰基-2-(3-甲氧基苯基)-2,3-二氢-4-喹啉酮(Ⅴi)、N-乙酰基-2-(3-溴苯基)-2,3-二氢-4-喹啉酮(Ⅴj)、N-乙酰基-2-(2-溴苯基)-2,3-二氢-4-喹啉酮(Ⅴk)、N-乙酰基-2-(2-噻吩基)-2,3-二氢-4-喹啉酮(Ⅴl)、N-乙酰基-2-苯乙烯基-2,3-二氢-4-喹啉酮(Ⅴm)、N-乙酰基-2-苯基-6-溴-2,3-二氢--4-喹啉酮(Ⅴn)、N-乙酰基-2-甲基-2,3-二氢-4-喹啉酮(Ⅴo)。
有益效果:本发明运用有机小分子催化剂(奎宁衍生的硫脲)催化1-芳基-3-芳基(或烷基)-2,3-不饱和丙酮进行分子内6-endo-trig氮杂迈克尔加成反应,实现高对映选择性N-乙酰基-2-取代-2,3-二氢-4-喹啉酮类化合物的合成,与现有制备方法比较,本方法原料制备简单,得到的产物对映选择性高的多,该类产物具有很好的抗肿瘤药物和抗菌药物方面的用途(Y.Xia,Z.-Y.Yang,P.Xia,K.F.Bastow,Y.Tachibana,S.-C.Kuo,E.Hamel,T.Hackl,K.-H.Lee,J.Med.Chem.1998,41,1155),可作为跨物种的microRNA抑制剂,而且还是合成许多有重要生物活性天然产物的关键中间体。
具体实施方式
实施例1:N-乙酰基-2-苯基-2,3-二氢-4-喹啉酮(Ⅴa)的合成
反应瓶中加入1-(2-N-乙酰基氨基苯基)-3-苯基-2,3-不饱和丙酮0.1mmol,奎宁衍生的硫脲0.02mmol(如技术方案部分所示的催化剂结构式),苯甲酸0.06mmol和甲苯1mL,90℃搅拌48小时,反应后柱层析提纯制得N-乙酰基-2-苯基-2,3-二氢-4-喹啉酮(Ⅴa),产率为84%,1H NMR(400MHz,CDCl3)δ7.94-7.91(m,1H),7.48–7.44(m,1H),7.22–7.13(m,7H),6.47(s,1H),3.37(dd,J=18.0,1.6Hz,1H),3.25(dd,J=18.0,5.6Hz,1H),2.43(s,3H)。该物质具有较强的抗多种癌细胞活性(Y.Xia,Z.-Y.Yang,P.Xia,K.F.Bastow,Y.Tachibana,S.-C.Kuo,E.Hamel,T.Hackl,K.-H.Lee,J.Med.Chem.1998,41,1155)。
实施例2:N-乙酰基-2-(4-甲基苯基)-2,3-二氢-4-喹啉酮(Ⅴb)的合成
反应条件和提纯步骤如实施例1中N-乙酰基-2-苯基-2,3-二氢-4-喹啉酮(Ⅴa),由原料1-(2-N-乙酰基-氨基苯基)-3-(4-甲基苯基)-2,3-不饱和丙酮(Ⅲb)合成目标产物Ⅴb,产率为77%。1H NMR(400MHz,CDCl3)δ7.92(d,J=6.8Hz,1H),7.48–7.44(m,1H),7.29(br,1H),7.187.14(m,1H),7.06(d,J=8.0Hz,1H),6.99(d,J=8.1Hz,1H),6.42(s,1H),3.34(dd,J=18,1.7Hz,1H),3.22(dd,J=18,5.8Hz,1H),2.42(s,1H),2.21(s,1H)。
实施例3:N-乙酰基-2-联苯基-2,3-二氢-4-喹啉酮(Ⅴc)的合成
反应条件和提纯步骤如实施例1中N-乙酰基-2-苯基-2,3-二氢-4-喹啉酮(Ⅴa),由原料1-(2-N-乙酰基-氨基苯基)-3-联苯基-2,3-不饱和丙酮(Ⅲc)合成目标产物(Ⅴc),产率为77%。1H NMR(400MHz,CDCl3)δ7.95(dd,J=7.6,1.2Hz,1H),7.50–7.16(m,12H),6.51(s,1H),3.40(dd,J=18.0,1.6Hz,1H),3.27(dd,J=18.0,6.0Hz,1H),2.45(s,3H)。
实施例4:N-乙酰基-2-萘基-2,3-二氢-4-喹啉酮(Ⅴd)的合成
反应条件和提纯步骤如实施例1中N-乙酰基-2-苯基-2,3-二氢-4-喹啉酮(Ⅴa),由原料1-(2-N-乙酰基-氨基苯基)-3-(2-萘基)-2,3-不饱和丙酮(Ⅲd)合成目标产物Ⅴd,产率为67%。1HNMR(400MHz,CDCl3)δ7.99–7.87(m,1H),7.78–7.63(m,3H),7.54(s,1H),7.39(ddd,J=10.3,8.1,2.8Hz,4H),7.26(brs,1H),7.12(t,J=7.8Hz,1H),6.66(s,1H),3.53(dd,J=18.0,1.6Hz,1H),3.32(dd,J=18.0,5.6Hz,1H),2.47(s,3H)。
实施例5:N-乙酰基-2-(4-氯苯基)-2,3-二氢-4-喹啉酮(Ⅴe)的合成
反应条件和提纯步骤如实施例1中N-乙酰基-2-苯基-2,3-二氢-4-喹啉酮(Ⅴa),由原料1-(2-N-乙酰基-氨基苯基)-3-(4-氯苯基)-2,3-不饱和丙酮(Ⅲe)合成目标产物Ⅴe,产率为78%。1H NMR(400MHz,CDCl3)δ7.93(dd,J=7.8,1.4Hz,1H),7.53–7.43(m,1H),7.27–7.14(m,4H),7.11(d,J=8.6Hz,2H),6.47(s,1H),3.32(dd,J=18.0,2.4Hz,1H),3.24(dd,J=18.0,5.6Hz,1H),2.43(s,3H)。
实施例6:N-乙酰基-2-(4-甲氧基苯基)-2,3-二氢-4-喹啉酮(Ⅴf)的合成
反应条件和提纯步骤如实施例1中N-乙酰基-2-苯基-2,3-二氢-4-喹啉酮(Ⅴa),由原料1-(2-N-乙酰基-氨基苯基)-3-(4-甲氧基苯基)-2,3-不饱和丙酮(Ⅲf)合成目标产物Ⅴf,产率为75%。1H NMR(400MHz,CDCl3)δ7.94(dd,J=8.0,1.6Hz,1H),7.48–7.44(m,1H),7.26(brs,1H),7.19–7.15(m,1H),7.10-7.07(m,2H),6.74–6.70(m,2H),6.42(s,1H),3.70(s,3H),3.32(dd,J=18.0,2.0Hz,1H),3.22(dd,J=18.0,5.7Hz,1H),2.42(s,3H)。
实施例7:N-乙酰基-2-(4-溴苯基)-2,3-二氢-4-喹啉酮(Ⅴg)的合成
反应条件和提纯步骤如实施例1中N-乙酰基-2-苯基-2,3-二氢-4-喹啉酮(Ⅴa),由原料1-(2-N-乙酰基-氨基苯基)-3-(4-溴苯基)-2,3-不饱和丙酮(Ⅲg)合成目标产物Ⅴg,产率为79%。1H NMR(400MHz,CDCl3)δ7.94(d,J=7.6Hz,1H),7.48(m,1H),7.32(d,J=8.4Hz,2H),7.21-7.18(m,2H),7.05(d,J=8.4Hz,2H),6.46(s,1H),3.31(dd,J=18.0,1.6Hz,1H),3.23(dd,J=18.0,5.6Hz,1H),2.42(s,3H)。
实施例8:N-乙酰基-2-(4-三氟甲基苯基)-2,3-二氢-4-喹啉酮(Ⅴh)的合成
反应条件和提纯步骤如实施例1中N-乙酰基-2-苯基-2,3-二氢-4-喹啉酮(Ⅴa),由原料1-(2-N-乙酰基-氨基苯基)-3-(4-三氟甲基苯基)-2,3-不饱和丙酮(Ⅲh)合成目标产物Ⅴh,产率为83%。1H NMR(400MHz,CDCl3)δ7.94(dd,J=7.8,1.4Hz,1H),7.54–7.43(m,3H),7.31(d,J=8.2Hz,2H),7.28–7.15(m,2H),6.56(s,1H),3.38(dd,J=18.1,2.0Hz,1H),3.29(dd,J=18.1,5.7Hz,1H),2.44(s,3H)。
实施例9:N-乙酰基-2-(3-甲氧基苯基)-2,3-二氢-4-喹啉酮(Ⅴi)的合成
反应条件和提纯步骤如实施例1中N-乙酰基-2-苯基-2,3-二氢-4-喹啉酮(Ⅴa),由原料1-(2-N-乙酰基-氨基苯基)-3-(3-甲氧基苯基)-2,3-不饱和丙酮(Ⅲi)合成目标产物Ⅴi,产率为79%。1H NMR(400MHz,CDCl3)δ7.93(d,J=7.6Hz,1H),7.47(t,J=7.2Hz,1H),7.30(brs,1H),7.14(dt,J=23.2,7.8Hz,2H),6.75–6.67(m,3H),6.42(s,1H),3.69(s,3H),3.35(dd,J=17.9,1.6Hz,1H),3.23(dd,J=18.0,5.8Hz,1H),2.42(s,3H)。
实施例10:N-乙酰基-2-(3-溴苯基)-2,3-二氢-4-喹啉酮(Ⅴj)的合成
反应条件和提纯步骤如实施例1中N-乙酰基-2-苯基-2,3-二氢-4-喹啉酮(Ⅴa),由原料1-(2-N-乙酰基-氨基苯基)-3-(3-溴苯基)-2,3-不饱和丙酮(Ⅲj)合成目标产物Ⅴj,产率为80%。1H NMR(400MHz,CDCl3)δ7.95-7.93(m,1.4Hz,1H),7.52–7.48(m,1H),7.35(s,1H),7.29-7.18(m,3H),7.10–7.04(m,2H),6.48(s,1H),3.28(qd,J=18.0,3.9Hz,2H),2.43(s,3H)。
实施例11:N-乙酰基-2-(2-溴苯基)-2,3-二氢-4-喹啉酮(Ⅴk)的合成
反应条件和提纯步骤如实施例1中N-乙酰基-2-苯基-2,3-二氢-4-喹啉酮(Ⅴa),由原料1-(2-N-乙酰基-氨基苯基)-3-(2-溴苯基)-2,3-不饱和丙酮(Ⅲk)合成目标产物Ⅴk,产率为83%。1H NMR(400MHz,CDCl3)δ7.97(d,J=7.7Hz,1H),7.56–7.52(m,3H),7.27-7.22(m,1H),7.087–7.02(m,2H),6.91–6.89(m,1H),6.43(s,1H),3.33(dd,J=18.0,6.1Hz,1H),3.26(dd,J=18.0,2.0Hz,1H),2.34(s,3H)。
实施例12:N-乙酰基-2-(2-噻吩基)-2,3-二氢-4-喹啉酮(Ⅴl)的合成
反应条件和提纯步骤如实施例1中N-乙酰基-2-苯基-2,3-二氢-4-喹啉酮(Ⅴa),由原料1-(2-N-乙酰基-氨基苯基)-3-(2-噻吩基)-2,3-不饱和丙酮(Ⅲl)合成目标产物Ⅴl,产率为67%。1H NMR(400MHz,CDCl3)δ7.97(dd,J=7.8,1.4Hz,1H),7.53–7.48(m,1H),7.28(d,J=13.8Hz,1H),7.21(t,J=7.6Hz,1H),7.11–7.10(m,1H),6.78(t,J=3.6Hz,2H),6.61(s,1H),3.28–3.26(m,2H),2.43(s,1H)。
实施例13:N-乙酰基-2-苯乙烯基-2,3-二氢-4-喹啉酮(Ⅴm)的合成
反应条件和提纯步骤如实施例1中N-乙酰基-2-苯乙烯基-2,3-二氢-4-喹啉酮(Ⅴa),由原料1-(2-N-乙酰基-氨基苯基)-3-苯乙烯基-2,3-不饱和丙酮(Ⅲm)合成目标产物Ⅴm,产率为62%。1H NMR(300MHz,CDCl3)δ8.01(dd,J=7.8,1.8Hz,1H),7.58-7.53(m,1H),7.41(brs,1H),7.27-7.19(m,6H),6.47(dd,J=16.2,1.5Hz,1H),6.08(dd,J=16.0,5.1Hz,1H),5.98(s,1H),3.16(dd,J=17.9,5.8Hz,1H),3.00(dd,J=17.9,1.8Hz,1H),2.41(s,3H)。
实施例14:N-乙酰基-6-溴-2-苯基-2,3-二氢-4-喹啉酮(Ⅴn)
反应条件和提纯步骤如实施例1中N-乙酰基-2-苯基-2,3-二氢-4-喹啉酮(Ⅴa),由原料1-(2-N-乙酰基-氨基-5-溴苯基)-3-(4-甲基苯基)-2,3-不饱和丙酮(Ⅲn)合成目标产物Ⅴn,产率为53%。1H NMR(400MHz,CDCl3)δ8.02(d,J=2.4Hz,1H),7.55(dd,J=8.7,2.4Hz,1H),7.37–7.11(m,6H),6.37(s,1H),3.39(dd,J=18.0,1.6Hz,1H),3.23(dd,J=18.0,5.6Hz,1H),2.43(s,3H)。
实施例15:N-乙酰基-2-甲基-2,3-二氢-4-喹啉酮(Ⅴo)的合成
反应条件和提纯步骤如实施例1中N-乙酰基-2-苯基-2,3-二氢-4-喹啉酮(Ⅴa),由原料1-(2-N-乙酰基-氨基苯基)-3-甲基-2,3-不饱和丙酮(Ⅳo)合成目标产物Ⅴo,产率为77%。1HNMR(300MHz,CDCl3)δ8.02(dd,J=7.8,1.5Hz,1H),7.60–7.54(m,1H),7.39(brs,1H),7.30-7.25(m,1H),5.36(s,1H),3.02(dd,J=17.9,5.9Hz,1H),2.60(dd,J=17.9,1.5Hz,1H),2.34(s,3H),1.21(d,J=7.0Hz,3H)。
实施例16(对比):N-乙酰基-2-苯基-2,3-二氢-4-喹啉酮(Ⅴa)
反应瓶中加入1-(2-N-乙酰基氨基苯基)-3-苯基-2,3-不饱和丙酮0.1mmol,奎宁衍生的硫脲0.02mmol,苯甲酸0.06mmol和甲苯1mL,60℃搅拌48小时,反应后柱层析提纯制得N-乙酰基-2-苯基-2,3-二氢-4-喹啉酮(Ⅴa),产率仅为40%。
Claims (3)
1.一种高对映选择性N-乙酰基-2-取代-2,3-二氢-4-喹啉酮类化合物的合成方法,其特征在于,原料为1-芳基-3-芳基或烷基-2,3-不饱和酮,在0.2当量奎宁衍生的硫脲有机小分子催化剂和0.6当量苯甲酸的共同作用,以甲苯为溶剂,经(1)式所示分子内6-endo-trig氮杂迈克尔加成反应2天后,经分离提纯得到N-乙酰基-2-取代-2,3-二氢-4-喹啉酮类物质,奎宁衍生的硫脲类化合物有机小分子催化剂结构如下所示:
其中,R1为溴原子或氢原子,R2为苯基,4-甲基苯基,联苯基,2-萘基,4-氯苯基,4-甲氧基苯基,4-溴苯基,4-三氟甲基苯,3-甲氧基苯基,3-溴苯基,2-溴苯基,2-噻吩基,2-苯乙烯基或者甲基,R3为乙酰基(Ac)。
2.如权利要求1所述高对映选择性N-乙酰基-2-取代-2,3-二氢-4-喹啉酮类化合物的合成方法,其特征在于,分子内6-endo-trig氮杂迈克尔加成反应在甲苯溶剂中进行,反应温度为90℃,反应时间2天。
3.如权利要求1或2所述高对映选择性N-乙酰基-2-取代-2,3-二氢-4-喹啉酮类化合物的合成方法,其特征在于所述分离提纯方法为柱层析。
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