CN116554185A - Chiral spiro oxindole compound and preparation method thereof - Google Patents

Chiral spiro oxindole compound and preparation method thereof Download PDF

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CN116554185A
CN116554185A CN202310001621.0A CN202310001621A CN116554185A CN 116554185 A CN116554185 A CN 116554185A CN 202310001621 A CN202310001621 A CN 202310001621A CN 116554185 A CN116554185 A CN 116554185A
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chiral
oxindole
compound
aromatic ring
ethyl acetate
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龚流柱
温育华
姚雪彪
杨丰瑞
宋琎
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University of Science and Technology of China USTC
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University of Science and Technology of China USTC
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    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D491/00Heterocyclic compounds containing in the condensed ring system both one or more rings having oxygen atoms as the only ring hetero atoms and one or more rings having nitrogen atoms as the only ring hetero atoms, not provided for by groups C07D451/00 - C07D459/00, C07D463/00, C07D477/00 or C07D489/00
    • C07D491/02Heterocyclic compounds containing in the condensed ring system both one or more rings having oxygen atoms as the only ring hetero atoms and one or more rings having nitrogen atoms as the only ring hetero atoms, not provided for by groups C07D451/00 - C07D459/00, C07D463/00, C07D477/00 or C07D489/00 in which the condensed system contains two hetero rings
    • C07D491/10Spiro-condensed systems
    • C07D491/107Spiro-condensed systems with only one oxygen atom as ring hetero atom in the oxygen-containing ring
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D491/00Heterocyclic compounds containing in the condensed ring system both one or more rings having oxygen atoms as the only ring hetero atoms and one or more rings having nitrogen atoms as the only ring hetero atoms, not provided for by groups C07D451/00 - C07D459/00, C07D463/00, C07D477/00 or C07D489/00
    • C07D491/12Heterocyclic compounds containing in the condensed ring system both one or more rings having oxygen atoms as the only ring hetero atoms and one or more rings having nitrogen atoms as the only ring hetero atoms, not provided for by groups C07D451/00 - C07D459/00, C07D463/00, C07D477/00 or C07D489/00 in which the condensed system contains three hetero rings
    • C07D491/20Spiro-condensed systems
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07BGENERAL METHODS OF ORGANIC CHEMISTRY; APPARATUS THEREFOR
    • C07B2200/00Indexing scheme relating to specific properties of organic compounds
    • C07B2200/07Optical isomers
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00Technologies relating to chemical industry
    • Y02P20/50Improvements relating to the production of bulk chemicals
    • Y02P20/55Design of synthesis routes, e.g. reducing the use of auxiliary or protecting groups

Abstract

The invention discloses a chiral spiro oxindole compound and a diastereoisomeric divergent preparation method thereof, wherein the chiral spiro oxindole compound is an optical active compound with a structure shown in the following formula I, and comprises stereoisomers with the same chemical general formula:wherein: * Represents a chiral carbon atom; the substituent R is selected from hydrogen, C 1‑10 Alkyl or aryl; ar is an aromatic ring or a substituted aromatic ring; ar' is an aromatic ring or a substituted aromatic ring; r is R 1 、R 2 、R 3 、R 4 、R 5 、R 6 Are independently selected from hydrogen, halogen, C 1‑4 A hydrocarbyl group or a hydrocarbyloxy group. The invention applies a chiral rhodium complex and a chiral aza-heterocyclic carbene combined catalytic system to catalyze a class of asymmetric [3+3]]Cycloaddition is a critical step, in high yieldsThe chiral spiro oxindole compound is synthesized with high stereoselectivity and gram scale precision and rapidly. The preparation method is simple, and has biomedical practicability and industrial application prospect.

Description

Chiral spiro oxindole compound and preparation method thereof
Technical Field
The invention belongs to the technical field of asymmetric organic synthesis, and particularly relates to a chiral spiro oxindole compound and a diastereoisomeric divergent preparation method thereof.
Background
The spiro oxindole compound widely exists in natural products and drug molecules, has broad-spectrum biological activity, has great significance in drug development due to efficient construction, and is widely paid attention to chemists and pharmacists. In recent years, the highly stereoselective synthesis of chiral spiro oxindoles by asymmetric catalysis has gradually become a focus of research by organic chemists.
Chiral is one of the essential attributes of nature, and a large number of chiral molecules are stored in nature and living bodies, and many biological macromolecules such as proteins, polysaccharides, nucleic acids and the like which are important bases of life activities basically have chirality. Chiral research plays an important role in life science, pharmacy and food science. There are significant differences in pharmacology and toxicity of chiral drugs, such as thalidomide (also known as reaction arrest), which has been widely used as a sedative in europe, and many pregnant women produce abnormal fetuses after taking this drug because only the R-isomer is sedating and the S-isomer is teratogenic. The development of a novel, rapid, efficient and sensitive chiral separation analysis method has very important significance for the stereoselective synthesis of enantiomers, pharmacological research of chiral medicaments, purity analysis of enantiomers, environmental monitoring and healthy life of human beings. Thus, developing new synthetic methodologies to achieve the acquisition of all stereoisomers of fragments with multiple chiral elements is a highly challenging field with significant scientific research value.
The cooperative control strategy of the double catalytic system has proved to be a simple and effective solution. In recent years, chemists develop various types of cooperative control strategies successively, so that three-dimensional divergent synthesis with diversified structure types is realized efficiently, and under unified raw materials, synthesis routes and reaction conditions, collective asymmetric synthesis of multiple diastereomers of the multi-chiral center molecule is realized accurately and controllably, thereby providing important guarantee for synthesis of multiple chiral isomers of important physiologically active natural products and research on pharmacodynamic relations.
The wide application of chiral spiro oxindole compounds has prompted us to find a high-efficiency synthesis method for realizing different isomers of the compounds. However, no diastereoselective synthesis of chiral spiro oxindole derivative compounds has been reported. Therefore, there is an urgent need to develop a general strategy for diastereoselective synthesis of chiral spiro oxindole compounds with high yield and high enantioselectivity, which is realized in a precise and rapid manner, starting from a simple and easily available framework.
Disclosure of Invention
The invention aims to provide a chiral spiro oxindole compound and a diastereoisomeric divergent preparation method thereof, thereby solving the problems in the prior art.
The chiral spiro oxindole compound provided by the invention is an optical active compound with a structure shown in the following formula I, and comprises stereoisomers with the same chemical general formula:
wherein: * Represents a chiral carbon atom; the substituent R is selected from hydrogen, C 1-10 Alkyl or aryl; ar is an aromatic ring or a substituted aromatic ring; ar' is an aromatic ring or a substituted aromatic ring; r is R 1 、R 2 、R 3 、R 4 、R 5 、R 6 Are independently selected from hydrogen, halogen, C 1-4 A hydrocarbyl group or a hydrocarbyloxy group.
The invention relates to a diastereoisomeric divergent preparation method of chiral spiro oxindole compound, which takes oxindole-derived alpha, beta-unsaturated aldehyde 1 and 1, 4-dihydro-1, 4-epoxynaphthalene compound 2 as initial raw materials, rhodium (I) bis (1, 5-cyclooctadiene) -triflate as a metal catalyst, chiral phosphine reagent as a ligand, chiral aza-heterocyclic carbene as an organic catalyst, and the target product I is obtained after the separation and purification through asymmetric [3+3] cyclization reaction under the assistance of alkali.
The synthetic route is as follows:
in the above formula: * Represents a chiral carbon atom; the substituent R is selected from hydrogen, C 1-10 Alkyl or aryl; ar is an aromatic ring or a substituted aromatic ring; ar' is an aromatic ring or a substituted aromatic ring; r is R 1 、R 2 、R 3 、R 4 、R 5 、R 6 Are independently selected from hydrogen, halogen, C 1-4 A hydrocarbyl group or a hydrocarbyloxy group.
The method specifically comprises the following steps:
mixing and pre-stirring a bis (1, 5-cyclooctadiene) -trifluoro rhodium (I) mesylate metal catalyst and chiral phosphine ligand in an organic solvent for 1 hour under the nitrogen atmosphere, then adding the chiral azacyclo-carbene catalyst, alpha, beta-unsaturated aldehyde 1 derived from oxindole, 1, 4-dihydro-1, 4-epoxynaphthalene compound 2, alkali and the organic solvent into the mixed system under the protection of nitrogen, and reacting for 4-72 hours at the temperature of 10-60 ℃, and determining the reaction end point by using a thin-layer chromatography spot plate; the reaction system is then diluted with ethyl acetate and extracted with water, the aqueous phase is then extracted with ethyl acetate, the organic phases are combined, dried over anhydrous sodium sulfate and concentrated under reduced pressure, and finally the asymmetric spiro oxindole product I is obtained by column chromatography separation.
The preparation process of the invention comprises the following steps:
the alkali is potassium phosphate, potassium hydrogen phosphate, lithium carbonate, sodium carbonate, potassium carbonate, triethylamine, diisopropylethylamine, tetramethyl ethylenediamine or N-methylmorpholine.
The organic solvent is 1, 4-dioxane, dichloromethane, dichloroethane, dimethyl sulfoxide, N-methylpyrrolidone, N-dimethylformamide, N-dimethylacetamide, ethyl acetate, chloroform, tetrahydrofuran, acetonitrile, toluene, ethylbenzene, fluorobenzene, chlorobenzene, bromobenzene, xylene or trimethylbenzene.
The chiral phosphine ligand is selected from
Wherein: r is R 7 、R 8 、R 9 、R 10 、R 11 Each independently selected from hydrogen, halogen, or substituted or unsubstituted: c (C) 1-10 Alkyl, C 3-10 Cycloalkyl, 2-furyl or C 6-20 Aryl groups of (a).
The chiral azacyclo-carbene catalyst is selected from the group consisting of:
wherein: r is R 12 、R 13 、R 14 Each independently selected from hydrogen, halogen, or substituted or unsubstituted: c (C) 1-10 Alkyl, C 3-10 Cycloalkyl, 2-furyl or C 6-20 Aryl groups of (a).
In the preparation process of the invention, four configurations of (R, R, R), (R, S, S), (S, R, R) and (S, S, S) of the target product I can be selectively obtained by changing the configurations of the chiral phosphine ligand and the chiral N-heterocyclic carbene.
Wherein:
the molar ratio of the rhodium (1, 5-cyclooctadiene) -triflate (I) to the indole oxide-derived alpha, beta-unsaturated aldehyde 1 is 0.025:1-1:1; the molar ratio of chiral phosphine ligand to oxindole derived alpha, beta-unsaturated aldehyde 1 is 0.025:1-1:1; the molar ratio of the chiral N-heterocyclic carbene catalyst to the oxindole-derived alpha, beta-unsaturated aldehyde 1 is 0.025:1-1:1; the molar equivalent ratio of the oxindole-derived alpha, beta-unsaturated aldehyde 1 to the 1, 4-dihydro-1, 4-epoxynaphthalene compound 2 is 1:1-1:5; the molar ratio of the oxindole-derived alpha, beta-unsaturated aldehyde 1 to the alkali is 1:0.1-1:5.
Further, the molar ratio of rhodium (I) bis (1, 5-cyclooctadiene) -trifluoromethanesulfonate to chiral phosphine ligand is 1:1-1:4.
The invention provides a method for synthesizing chiral spiro oxindole through key steps of asymmetric reaction. The invention takes an oxindole-derived alpha, beta-unsaturated aldehyde 1 and a 1, 4-dihydro-1, 4-epoxynaphthalene compound 2 as initial raw materials, takes bis (1, 5-cyclooctadiene) -trifluoro rhodium (I) mesylate as a metal catalyst, takes a chiral phosphine reagent as a ligand and takes a chiral aza-heterocyclic carbene as an organic catalyst, and synthesizes the chiral spiro oxindole compound I accurately and rapidly in high yield, high stereoselectivity and gram scale through asymmetric reaction under the assistance of alkali. The invention successfully develops a synthesis method of chiral spiro oxindole compound, which is easy to prepare chiral spiro oxindole compound with high yield and high optical purity, and the compound also has bioactivity.
Drawings
FIG. 1 is a graph showing the results of assays for the activity of various chiral spiro oxindole compounds on HeLa cells.
FIG. 2 is a graph showing the results of imaging test of the activity of different chiral spiro oxindole compounds on HeLa cells.
Detailed Description
Example 1: preparation of chiral spirooxindole compound (R, R, R) -3aa
To a dry 10mL Schlenk reaction tube at 25deg.C under nitrogen atmosphere were added rhodium (I) bis (1, 5-cyclooctadiene) -trifluoromethanesulfonate (2.3 mg,0.005mmol,5 mol%) and (S) -1- [ (Rp) -2- (diphenylphosphino) ferrocene ] ethyl di-tert-butylphosphine (3.8 mg,0.007mmol,7 mol%) and 2.5mL 1, 4-dioxane, and stirred for 1 hour; subsequently, under nitrogen protection, a chiral azacyclo-carbene catalyst NHC (4.2 mg,0.001mmol,10 mol%), an oxindole-derived α, β -unsaturated aldehyde 1a (18.7 mg,0.1mmol,1.0 eq.), 1, 4-dihydro-1, 4-epoxynaphthalene compound 2a (15.1 mg,0.105mmol,1.05 eq.), potassium phosphate (21.2 mg,0.1mmol,1.0 eq.) and 2.5mL of 1, 4-dioxane were added to the mixed system, and reacted at 15 ℃ for 10 hours by thin layer chromatography, and the reaction was terminated; the reaction was then diluted with ethyl acetate and extracted with water, then the aqueous phase was extracted with ethyl acetate, the organic phases combined, dried over anhydrous sodium sulfate and concentrated under reduced pressure, then isolated by column chromatography (eluent petroleum ether: ethyl acetate=5:1, V/V) to give the asymmetric spiro oxindole product (R, R) -3aa (31.8 mg,96% yieldl, 95:5d.r., >99% e.e.) as a white solid.
1 H NMR(400MHz,CDCl 3 )δ7.74–7.67(m,1H),7.38(td,J=7.5,1.7Hz,1H),7.32(td,J=7.6,1.4Hz,1H),7.28–7.23(m,1H),7.21–7.11(m,2H),7.05(dd,J=7.4,1.3Hz,1H),6.95(d,J=7.8Hz,1H),6.42(dd,J=9.6,3.0Hz,1H),6.31(d,J=13.9Hz,1H),5.05(dd,J=9.6,2.1Hz,1H),3.28(s,3H),3.15(dt,J=14.0,2.5Hz,1H),3.06(d,J=17.5Hz,1H),2.84(d,J=17.5Hz,1H). 13 C NMR(101MHz,CDCl 3 )δ177.47,169.13,143.67,133.51,131.73,130.93,130.09,129.56,128.59,128.15,126.50,123.84,123.70,122.87,121.81,108.68,75.50,47.30,44.08,37.36,26.59.HRMS(ESI)m/z(M+H) + :calculated for(C 21 H 18 NO 3 ) + :332.1281,found:332.1288;[α] 20 D =-90.3(c=0.59,CHCl 3 );The product was analyzed by HPLC to determine the enantiomeric excess:>99%e.e.(CHIRALPAK OD-H,hexane/i-PrOH=80/20,flow rate:1.0mL/min,T=30℃,254nm),t R (minor)=20.73min,t R (major)=22.66min.
Example 2: preparation of chiral spirooxindole compound (R, S, S) -3aa
Rhodium (I) bis (1, 5-cyclooctadiene) -trifluoromethanesulfonate (2.3 mg,0.005mmol,5 mol%) and (R) -1- [ (Sp) -2- (diphenylphosphino) ferrocene ] ethyl di-tert-butylphosphine (3.8 mg,0.007mmol,7 mol%) and 1.0mL of 1, 4-dioxane were added to a dry 10mL Schlenk reaction tube under nitrogen at 25℃and stirred for 1 hour; subsequently, under nitrogen protection, a chiral azacyclo-carbene catalyst NHC (4.2 mg,0.001mmol,10 mol%), an oxindole-derived α, β -unsaturated aldehyde 1a (18.7 mg,0.1mmol,1.0 eq.), 1, 4-dihydro-1, 4-epoxynaphthalene compound 2a (15.1 mg,0.105mmol,1.05 eq.), potassium phosphate (21.2 mg,0.1mmol,1.0 eq.) and 1.0mL of 1, 4-dioxane were added to the mixed system, and reacted at 15 ℃ for 10 hours by thin layer chromatography, and the reaction was terminated; the reaction was then diluted with ethyl acetate and extracted with water, then the aqueous phase was extracted with ethyl acetate, the organic phases combined, dried over anhydrous sodium sulfate and concentrated under reduced pressure, then isolated by column chromatography (eluent petroleum ether: ethyl acetate=5:1, V/V) to give the asymmetric spiro oxindole product (R, S) -3aa (31.8 mg,96% yieldl, 86:14d.r., >99% e.e.) as a white solid.
1 H NMR(500MHz,CDCl 3 )δ7.71(dd,J=7.6,1.3Hz,1H),7.39(td,J=7.8,1.2Hz,1H),7.34(td,J=7.6,1.3Hz,1H),7.31–7.24(m,2H),7.12(td,J=7.5,1.0Hz,1H),7.05(dd,J=7.4,1.3Hz,1H),7.01–6.96(m,1H),6.35(dd,J=9.6,3.0Hz,1H),5.87(d,J=14.7Hz,1H),5.13(dd,J=9.7,2.1Hz,1H),3.34(m,1H)3.33(s,3H),3.17(d,J=17.8Hz,1H),2.71(d,J=17.8Hz,1H). 13 C NMR(126MHz,CDCl 3 )δ176.64,168.39,143.27,133.27,131.71,130.49,129.51,129.42,128.60,128.32,126.45,125.08,123.48,123.14,122.94,109.07,77.13,48.44,42.91,37.10,26.82.HRMS(ESI)m/z(M+H) + :calculated for(C 21 H 18 NO 3 ) + :332.1281,found:332.1289;[α] 20 D =-363.1(c=0.60,CHCl 3 );The product was analyzed by HPLC to determine the enantiomeric excess:>99%e.e.(CHIRALPAK OD-H,hexane/i-PrOH=70/30,flow rate:1.0mL/min,T=30℃,254nm),t R (minor)=10.61min,t R (major)=14.13min.
Example 3: preparation of chiral spirooxindole compound (S, R, R) -3aa
To a dry 10mL Schlenk reaction tube at 25deg.C under nitrogen atmosphere were added rhodium (I) bis (1, 5-cyclooctadiene) -trifluoromethanesulfonate (2.3 mg,0.005mmol,5 mol%) and (S) -1- [ (Rp) -2- (diphenylphosphino) ferrocene ] ethyl di-tert-butylphosphine (3.8 mg,0.007mmol,7 mol%) and 2.5mL 1, 4-dioxane, and stirred for 1 hour; subsequently, a chiral azacyclo-carbene catalyst ent-NHC (4.2 mg,0.001mmol,10 mol%), an oxindole-derived α, β -unsaturated aldehyde 1a (18.7 mg,0.1mmol,1.0 eq.), 1, 4-dihydro-1, 4-epoxynaphthalene compound 2a (15.1 mg,0.105mmol,1.05 eq.), potassium phosphate (21.2 mg,0.1mmol,1.0 eq.) and 2.5mL of 1, 4-dioxane were added to the mixed system under nitrogen protection, and reacted at 15℃for 10 hours by thin layer chromatography to determine the reaction end point; the reaction was then diluted with ethyl acetate and extracted with water, then the aqueous phase was extracted with ethyl acetate, the organic phases combined, dried over anhydrous sodium sulfate and concentrated under reduced pressure, then isolated by column chromatography (eluent petroleum ether: ethyl acetate=5:1, V/V) to give the asymmetric spiro oxindole product (S, R) -3aa (29.8 mg,90% yieldl, 88:12d.r., >99% e.e.) as a white solid.
1 H NMR(500MHz,CDCl 3 )δ7.71(dd,J=7.6,1.3Hz,1H),7.39(td,J=7.8,1.2Hz,1H),7.34(td,J=7.6,1.3Hz,1H),7.31–7.24(m,2H),7.12(td,J=7.5,1.0Hz,1H),7.05(dd,J=7.4,1.3Hz,1H),7.01–6.96(m,1H),6.35(dd,J=9.6,3.0Hz,1H),5.87(d,J=14.7Hz,1H),5.13(dd,J=9.7,2.1Hz,1H),3.34(m,1H)3.33(s,3H),3.17(d,J=17.8Hz,1H),2.71(d,J=17.8Hz,1H). 13 C NMR(126MHz,CDCl 3 )δ176.64,168.39,143.27,133.27,131.71,130.49,129.51,129.42,128.60,128.32,126.45,125.08,123.48,123.14,122.94,109.07,77.13,48.44,42.91,37.10,26.82.HRMS(ESI)m/z(M+H) + :calculated for(C 21 H 18 NO 3 ) + :332.1281,found:332.1284;[α] 20 D =313.6(c=0.39,CHCl 3 );The product was analyzedby HPLC to determine the enantiomeric excess:>99%e.e.(CHIRALPAK OD-H,hexane/i-PrOH=70/30,flow rate:1.0mL/min,T=30℃,254nm),t R (major)=10.46min,t R (minor)=14.51min.
Example 4: preparation of chiral spirooxindole compound (S, S, S) -3aa
Rhodium (I) bis (1, 5-cyclooctadiene) -trifluoromethanesulfonate (2.3 mg,0.005mmol,5 mol%) and (R) -1- [ (Sp) -2- (diphenylphosphino) ferrocene ] ethyl di-tert-butylphosphine (3.8 mg,0.007mmol,7 mol%) and 2.5mL of 1, 4-dioxane were added to a dry 10mL Schlenk reaction tube under nitrogen at 25℃and stirred for 1 hour; subsequently, a chiral azacyclo-carbene catalyst ent-NHC (4.2 mg,0.001mmol,10 mol%), an oxindole-derived α, β -unsaturated aldehyde 1a (18.7 mg,0.1mmol,1.0 eq.), 1, 4-dihydro-1, 4-epoxynaphthalene compound 2a (15.1 mg,0.105mmol,1.05 eq.), potassium phosphate (21.2 mg,0.1mmol,1.0 eq.) and 2.5mL of 1, 4-dioxane were added to the mixed system under nitrogen protection, and reacted at 15℃for 10 hours by thin layer chromatography to determine the reaction end point; the reaction was then diluted with ethyl acetate and extracted with water, then the aqueous phase was extracted with ethyl acetate, the organic phases combined, dried over anhydrous sodium sulfate and concentrated under reduced pressure, then isolated by column chromatography (eluent petroleum ether: ethyl acetate=5:1, V/V) to give the asymmetric spiro oxindole product (S, R) -3aa (31.8 mg,96% yieldl, 95:5d.r., >99% e.e.) as a white solid.
1 H NMR(400MHz,CDCl 3 )δ7.74–7.67(m,1H),7.38(td,J=7.5,1.7Hz,1H),7.32(td,J=7.6,1.4Hz,1H),7.28–7.23(m,1H),7.21–7.11(m,2H),7.05(dd,J=7.4,1.3Hz,1H),6.95(d,J=7.8Hz,1H),6.42(dd,J=9.6,3.0Hz,1H),6.31(d,J=13.9Hz,1H),5.05(dd,J=9.6,2.1Hz,1H),3.28(s,3H),3.15(dt,J=14.0,2.5Hz,1H),3.06(d,J=17.5Hz,1H),2.84(d,J=17.5Hz,1H). 13 C NMR(101MHz,CDCl 3 )δ177.47,169.13,143.67,133.51,131.73,130.93,130.09,129.56,128.59,128.15,126.50,123.84,123.70,122.87,121.81,108.68,75.50,47.30,44.08,37.36,26.59.HRMS(ESI)m/z(M+H) + :calculated for(C 21 H 18 NO 3 ) + :332.1281,found:332.1287;[α] 20 D =41.6(c=0.39,CHCl 3 );The product was analyzed by HPLC to determine the enantiomeric excess:>99%e.e.(CHIRALPAK OD-H,hexane/i-PrOH=80/20,flow rate:1.0mL/min,T=30℃,254nm),t R (major)=20.22min,t R (minor)=23.09min.
Example 5: preparation of chiral spirooxindole compounds (R, R, R) -3ba
Rhodium (I) bis (1, 5-cyclooctadiene) -trifluoromethanesulfonate (2.3 mg,0.005mmol,5 mol%) and (S) -1- [ (Rp) -2- (diphenylphosphino) ferrocene ] ethyl di-tert-butylphosphine (3.8 mg,0.007mmol,7 mol%) and 1.0mL of 1, 4-dioxane were added to a dry 10mL Schlenk reaction tube under nitrogen atmosphere at 25℃and stirred for 1 hour; subsequently, under nitrogen protection, a chiral azacyclo-carbene catalyst NHC (4.2 mg,0.001mmol,10 mol%), an oxindole-derived α, β -unsaturated aldehyde 1b (20.5 mg,0.1mmol,1.0 eq.), 1, 4-dihydro-1, 4-epoxynaphthalene compound 2a (15.1 mg,0.105mmol,1.05 eq.), potassium phosphate (21.2 mg,0.1mmol,1.0 eq.) and 1.0mL of 1, 4-dioxane were added to the mixed system, and reacted at 15 ℃ for 10 hours by thin layer chromatography, and the reaction was terminated; the reaction was then diluted with ethyl acetate and extracted with water, then the aqueous phase was extracted with ethyl acetate, the organic phases were combined, dried over anhydrous sodium sulfate and concentrated under reduced pressure, then isolated by column chromatography (eluent petroleum ether: ethyl acetate=5:1, V/V) to give the asymmetric spiro oxindole product (R, R) -3ba (24.8 mg,71% yield;93:7d.r.,99% e.e.) as a colorless liquid.
1 H NMR(400MHz,CDCl 3 )δ7.70(dtd,J=8.1,1.3,0.6Hz,1H),7.33(td,J=7.6,1.4Hz,1H),7.29–7.23(m,1H),7.12(dd,J=8.2,5.1Hz,1H),7.06(dd,J=7.4,1.3Hz,1H),6.82(ddd,J=9.3,8.2,2.3Hz,1H),6.69(dd,J=8.6,2.3Hz,1H),6.44(dd,J=9.6,3.0Hz,1H),6.28(d,J=13.9Hz,1H),5.04(ddd,J=9.7,2.1,0.6Hz,1H),3.26(s,3H),3.12(ddd,J=13.9,3.0,2.1Hz,1H),3.06(d,J=17.5Hz,1H),2.82(d,J=17.5Hz,1H). 13 C NMR(101MHz,CDCl 3 )δ177.76,168.86,163.77(d,J=247.4Hz),145.25(d,J=11.6Hz),133.41,131.65,131.17,128.69,128.22,126.57,125.40(d,J=3.0Hz),124.14(d,J=9.9Hz),123.73,121.43,109.99(d,J=22.7Hz),97.66(d,J=27.6Hz),75.44,47.05,44.17,37.46,26.75. 19 F NMR(376MHz,CDCl 3 )δ-109.72.HRMS(ESI)m/z(M+H) + :calculated for(C 21 H 17 FNO 3 ) + :350.1187,found:350.1186;[α] 20 D =-74.5(c=0.36,CHCl 3 );The product was analyzed by HPLC to determine the enantiomeric excess:99%e.e.(CHIRALPAK IB,hexane/i-PrOH=70/30,flow rate:1.0mL/min,T=30℃,254nm),t R (minor)=10.51min,t R (major)=12.96min.
Example 6: preparation of chiral spirooxindole (R, S, S) -3ba
Rhodium (I) bis (1, 5-cyclooctadiene) -trifluoromethanesulfonate (2.3 mg,0.005mmol,5 mol%) and (R) -1- [ (Sp) -2- (diphenylphosphino) ferrocene ] ethyl di-tert-butylphosphine (3.8 mg,0.007mmol,7 mol%) and 1.0mL of 1, 4-dioxane were added to a dry 10mL Schlenk reaction tube under nitrogen at 25℃and stirred for 1 hour; subsequently, under nitrogen protection, a chiral azacyclo-carbene catalyst NHC (4.2 mg,0.001mmol,10 mol%), an oxindole-derived α, β -unsaturated aldehyde 1b (20.5 mg,0.1mmol,1.0 eq.), 1, 4-dihydro-1, 4-epoxynaphthalene compound 2a (15.1 mg,0.105mmol,1.05 eq.), potassium phosphate (21.2 mg,0.1mmol,1.0 eq.) and 1.0mL of 1, 4-dioxane were added to the mixed system, and reacted at 15 ℃ for 10 hours by thin layer chromatography, and the reaction was terminated; the reaction was then diluted with ethyl acetate and extracted with water, then the aqueous phase was extracted with ethyl acetate, the organic phases were combined, dried over anhydrous sodium sulfate and concentrated under reduced pressure, then isolated by column chromatography (eluent petroleum ether: ethyl acetate=5:1, V/V) to give the asymmetric spiro oxindole product (R, S) -3ba (22.7 mg,65% yieldl, 80:20d.r.,98% e.e.) as a colorless liquid.
1 H NMR(400MHz,CDCl 3 )δ7.70(d,J=7.6Hz,1H),7.34(td,J=7.6,1.4Hz,1H),7.31–7.19(m,2H),7.06(dd,J=7.4,1.4Hz,1H),6.81(ddd,J=9.2,8.2,2.4Hz,1H),6.73(dd,J=8.6,2.4Hz,1H),6.38(dd,J=9.7,3.0Hz,1H),5.82(d,J=14.7Hz,1H),5.11(dd,J=9.6,2.1Hz,1H),3.32(m,1H)3.31(s,3H),3.17(d,J=17.7Hz,1H),2.69(d,J=17.9Hz,1H). 13 C NMR(101MHz,CDCl 3 )δ177.04,168.12,163.77(d,J=248.0Hz),144.99(d,J=11.1Hz),133.14,131.65,130.74,128.74,128.43,126.55,126.27(d,J=9.7Hz),124.76,123.18,122.64,109.66(d,J=22.5Hz),98.09(d,J=27.6Hz),77.15,48.22,43.01,37.23,26.99. 19 F NMR(376MHz,CDCl 3 )δ-109.69.HRMS(ESI)m/z(M+H) + :calculated for(C 21 H 17 FNO 3 ) + :350.1187,found:332.1287;[α] 20 D =-243.7(c=0.21,CHCl 3 );The product was analyzed by HPLC to determine the enantiomeric excess:98%e.e.(CHIRALPAK IB,hexane/i-PrOH=70/30,flow rate:1.0mL/min,T=30℃,254nm),t R (minor)=11.64min,t R (major)=15.13min.
Example 7: preparation of chiral spirooxindole (S, R, R) -3ba compounds
To a dry 10mL Schlenk reaction tube at 25deg.C under nitrogen atmosphere were added rhodium (I) bis (1, 5-cyclooctadiene) -trifluoromethanesulfonate (2.3 mg,0.005mmol,5 mol%) and (S) -1- [ (Rp) -2- (diphenylphosphino) ferrocene ] ethyl di-tert-butylphosphine (3.8 mg,0.007mmol,7 mol%) and 2.5mL 1, 4-dioxane, and stirred for 1 hour; subsequently, a chiral azacyclo-carbene catalyst ent-NHC (4.2 mg,0.001mmol,10 mol%), an oxindole-derived α, β -unsaturated aldehyde 1b (20.5 mg,0.1mmol,1.0 eq.), 1, 4-dihydro-1, 4-epoxynaphthalene compound 2a (15.1 mg,0.105mmol,1.05 eq.), potassium phosphate (21.2 mg,0.1mmol,1.0 eq.) and 2.5mL of 1, 4-dioxane were added to the mixed system under nitrogen protection, and reacted at 15℃for 10 hours by thin layer chromatography to determine the reaction end point; the reaction was then diluted with ethyl acetate and extracted with water, then the aqueous phase was extracted with ethyl acetate, the organic phases combined, dried over anhydrous sodium sulfate and concentrated under reduced pressure, then isolated by column chromatography (eluent petroleum ether: ethyl acetate=5:1, V/V) to give the asymmetric spiro oxindole product (S, R) -3ba (22.7 mg,65% yield,85:15d.r., >99% e.e.) as a colorless liquid.
1 H NMR(400MHz,CDCl 3 )δ7.70(d,J=7.6Hz,1H),7.34(td,J=7.6,1.4Hz,1H),7.31–7.19(m,2H),7.06(dd,J=7.4,1.4Hz,1H),6.81(ddd,J=9.2,8.2,2.4Hz,1H),6.73(dd,J=8.6,2.4Hz,1H),6.38(dd,J=9.7,3.0Hz,1H),5.82(d,J=14.7Hz,1H),5.11(dd,J=9.6,2.1Hz,1H),3.32(m,1H)3.31(s,3H),3.17(d,J=17.7Hz,1H),2.69(d,J=17.9Hz,1H). 13 C NMR(101MHz,CDCl 3 )δ177.04,168.12,163.77(d,J=248.0Hz),144.99(d,J=11.1Hz),133.14,131.65,130.74,128.74,128.43,126.55,126.27(d,J=9.7Hz),124.76,123.18,122.64,109.66(d,J=22.5Hz),98.09(d,J=27.6Hz),77.15,48.22,43.01,37.23,26.99. 19 F NMR(376MHz,CDCl 3 )δ-109.69.HRMS(ESI)m/z(M+H) + :calculated for(C 21 H 17 FNO 3 ) + :350.1187,found:332.1285;[α] 20 D =285.5(c=0.24,CHCl 3 );The product was analyzed by HPLC to determine the enantiomeric excess:>99%e.e.(CHIRALPAK IB,hexane/i-PrOH=70/30,flow rate:1.0mL/min,T=30℃,254nm),t R (major)=10.40min,t R (minor)=15.44min.
Example 8: preparation of chiral spirooxindole (S, S, S) -3ba
Rhodium (I) bis (1, 5-cyclooctadiene) -trifluoromethanesulfonate (2.3 mg,0.005mmol,5 mol%) and (R) -1- [ (Sp) -2- (diphenylphosphino) ferrocene ] ethyl di-tert-butylphosphine (3.8 mg,0.007mmol,7 mol%) and 2.5mL of 1, 4-dioxane were added to a dry 10mL Schlenk reaction tube under nitrogen at 25℃and stirred for 1 hour; subsequently, a chiral azacyclo-carbene catalyst ent-NHC (4.2 mg,0.001mmol,10 mol%), an oxindole-derived α, β -unsaturated aldehyde 1b (20.5 mg,0.1mmol,1.0 eq.), 1, 4-dihydro-1, 4-epoxynaphthalene compound 2a (15.1 mg,0.105mmol,1.05 eq.), potassium phosphate (21.2 mg,0.1mmol,1.0 eq.) and 2.5mL of 1, 4-dioxane were added to the mixed system under nitrogen protection, and reacted at 15℃for 10 hours by thin layer chromatography to determine the reaction end point; the reaction was then diluted with ethyl acetate and extracted with water, then the aqueous phase was extracted with ethyl acetate, the organic phases combined, dried over anhydrous sodium sulfate and concentrated under reduced pressure, then isolated by column chromatography (eluent petroleum ether: ethyl acetate=5:1, V/V) to give the asymmetric spiro oxindole product (S, S) -3ba (26.9 mg,77% yield,95:5d.r., >99% e.e.) as a colorless liquid.
1 H NMR(400MHz,CDCl 3 )δ7.70(dtd,J=8.1,1.3,0.6Hz,1H),7.33(td,J=7.6,1.4Hz,1H),7.29–7.23(m,1H),7.12(dd,J=8.2,5.1Hz,1H),7.06(dd,J=7.4,1.3Hz,1H),6.82(ddd,J=9.3,8.2,2.3Hz,1H),6.69(dd,J=8.6,2.3Hz,1H),6.44(dd,J=9.6,3.0Hz,1H),6.28(d,J=13.9Hz,1H),5.04(ddd,J=9.7,2.1,0.6Hz,1H),3.26(s,3H),3.12(ddd,J=13.9,3.0,2.1Hz,1H),3.06(d,J=17.5Hz,1H),2.82(d,J=17.5Hz,1H). 13 C NMR(101MHz,CDCl 3 )δ177.76,168.86,163.77(d,J=247.4Hz),145.25(d,J=11.6Hz),133.41,131.65,131.17,128.69,128.22,126.57,125.40(d,J=3.0Hz),124.14(d,J=9.9Hz),123.73,121.43,109.99(d,J=22.7Hz),97.66(d,J=27.6Hz),75.44,47.05,44.17,37.46,26.75. 19 F NMR(376MHz,CDCl 3 )δ-109.72.HRMS(ESI)m/z(M+H) + :calculated for(C 21 H 17 FNO 3 ) + :350.1187,found:332.1286;[α] 20 D =72.2(c=0.43,CHCl 3 );The product was analyzedby HPLC to determine the enantiomeric excess:>99%e.e.(CHIRALPAK IB,hexane/i-PrOH=70/30,flow rate:1.0mL/min,T=30℃,254nm),t R (major)=11.01min,t R (minor)=13.79min.
Example 9: preparation of chiral spirooxindole compounds (R, R, R) -3ab
To a dry 10mL Schlenk reaction tube at 25deg.C under nitrogen atmosphere were added rhodium (I) bis (1, 5-cyclooctadiene) -trifluoromethanesulfonate (2.3 mg,0.005mmol,5 mol%) and (S) -1- [ (Rp) -2- (diphenylphosphino) ferrocene ] ethyl di-tert-butylphosphine (3.8 mg,0.007mmol,7 mol%) and 2.5mL 1, 4-dioxane, and stirred for 1 hour; subsequently, under nitrogen protection, a chiral azacyclo-carbene catalyst NHC (4.2 mg,0.001mmol,10 mol%), an oxindole-derived α, β -unsaturated aldehyde 1a (18.7 mg,0.1mmol,1.0 eq.), 1, 4-dihydro-1, 4-epoxynaphthalene compound 2b (18.1 mg,0.105mmol,1.05 eq.), potassium phosphate (21.2 mg,0.1mmol,1.0 eq.) and 2.5mL of 1, 4-dioxane were added to the mixed system, and reacted at 15 ℃ for 10 hours by thin layer chromatography, and the reaction was terminated; the reaction was then diluted with ethyl acetate and extracted with water, then the aqueous phase was extracted with ethyl acetate, the organic phases combined, dried over anhydrous sodium sulfate and concentrated under reduced pressure, then isolated by column chromatography (eluent petroleum ether: ethyl acetate=5:1, V/V) to give the asymmetric spiro oxindole product (R, R) -3ab (29.8 mg,83% yieldd, 94:6d.r., >99% e.e.) as a colorless liquid.
1 H NMR(400MHz,CDCl 3 )δ7.47(s,1H),7.38(t,J=7.6Hz,1H),7.21–7.12(m,2H),6.94(d,J=7.8Hz,1H),6.83(s,1H),6.35(dd,J=9.7,3.0Hz,1H),6.26(d,J=13.9Hz,1H),4.97(d,J=9.6Hz,1H),3.27(s,3H),3.09(m,1H),3.07(d,J=17.6Hz,1H),2.83(d,J=17.5Hz,1H),2.28(s,3H),2.22(s,3H). 13 C NMR(101MHz,CDCl 3 )δ177.57,169.38,143.66,137.17,136.21,130.85,130.77,130.33,129.47,129.39,127.89,125.00,123.80,122.85,120.58,108.60,75.66,47.36,44.47,37.33,26.54,19.81,19.47.HRMS(ESI)m/z(M+H) + :calculated for(C 23 H 22 NO 3 ) + :360.1594,found:360.1596;[α] 20 D =-72.5(c=0.50,CHCl 3 );The product was analyzed by HPLC to determine the enantiomeric excess:>99%e.e.(CHIRALPAK IB-N5,hexane/i-PrOH=80/20,flow rate:1.0mL/min,T=30℃,254nm),t R (minor)=16.16min,t R (major)=18.77min.
Example 10: preparation of chiral spirooxindole compound (R, S, S) -3ab
Rhodium (I) bis (1, 5-cyclooctadiene) -trifluoromethanesulfonate (2.3 mg,0.005mmol,5 mol%) and (R) -1- [ (Sp) -2- (diphenylphosphino) ferrocene ] ethyl di-tert-butylphosphine (3.8 mg,0.007mmol,7 mol%) and 1.0mL of 1, 4-dioxane were added to a dry 10mL Schlenk reaction tube under nitrogen at 25℃and stirred for 1 hour; subsequently, under nitrogen protection, a chiral azacyclo-carbene catalyst NHC (4.2 mg,0.001mmol,10 mol%), an oxindole-derived α, β -unsaturated aldehyde 1a (18.7 mg,0.1mmol,1.0 eq.), 1, 4-dihydro-1, 4-epoxynaphthalene compound 2b (18.1 mg,0.105mmol,1.05 eq.), potassium phosphate (21.2 mg,0.1mmol,1.0 eq.) and 1.0mL of 1, 4-dioxane were added to the mixed system, and reacted at 15 ℃ for 10 hours by thin layer chromatography, and the reaction was terminated; the reaction was then diluted with ethyl acetate and extracted with water, then the aqueous phase was extracted with ethyl acetate, the organic phases were combined, dried over anhydrous sodium sulfate and concentrated under reduced pressure, then isolated by column chromatography (eluent petroleum ether: ethyl acetate=5:1, V/V) to give the asymmetric spiro oxindole product (R, S) -3ab (35.6 mg,99% yieldl, 87:13d.r., >99% e.e.) as a colorless liquid.
1 H NMR(500MHz,CDCl 3 )δ7.48(s,1H),7.38(td,J=7.7,1.2Hz,1H),7.28(d,J=7.5Hz,1H),7.12(td,J=7.5,0.9Hz,1H),6.98(d,J=7.8Hz,1H),6.82(s,1H),6.29(dd,J=9.6,3.0Hz,1H),5.83(d,J=14.6Hz,1H),5.04(dd,J=9.6,2.1Hz,1H),3.32(s,3H),3.29(dt,J=14.6,2.7Hz,1H),3.16(d,J=17.8Hz,1H),2.71(d,J=17.8Hz,1H),2.29(s,3H),2.22(s,3H). 13 C NMR(126MHz,CDCl 3 )δ176.77,168.69,143.26,137.21,136.40,130.58,130.33,129.58,129.43,129.34,127.87,125.07,124.43,123.43,121.69,109.01,77.27,48.48,43.23,37.05,26.78,19.83,19.49.HRMS(ESI)m/z(M+H) + :calculated for(C 23 H 22 NO 3 ) + :360.1594,found:360.1599;[α] 20 D =-327.5(c=0.44,CHCl 3 );The product was analyzed by HPLC to determine the enantiomeric excess:>99%e.e.(CHIRALPAK IA,hexane/i-PrOH=70/30,flow rate:1.0mL/min,T=30℃,254nm),t R (major)=10.11min,t R (minor)=13.54min.
Example 11: preparation of chiral spirooxindole compound (S, R, R) -3ab
To a dry 10mL Schlenk reaction tube at 25deg.C under nitrogen atmosphere were added rhodium (I) bis (1, 5-cyclooctadiene) -trifluoromethanesulfonate (2.3 mg,0.005mmol,5 mol%) and (S) -1- [ (Rp) -2- (diphenylphosphino) ferrocene ] ethyl di-tert-butylphosphine (3.8 mg,0.007mmol,7 mol%) and 2.5mL 1, 4-dioxane, and stirred for 1 hour; subsequently, a chiral azacyclo-carbene catalyst ent-NHC (4.2 mg,0.001mmol,10 mol%), an oxindole-derived α, β -unsaturated aldehyde 1a (18.7 mg,0.1mmol,1.0 eq.), 1, 4-dihydro-1, 4-epoxynaphthalene compound 2b (18.1 mg,0.105mmol,1.05 eq.), potassium phosphate (21.2 mg,0.1mmol,1.0 eq.) and 2.5mL of 1, 4-dioxane were added to the mixed system under nitrogen protection, and reacted at 15℃for 10 hours by thin layer chromatography to determine the reaction end point; the reaction was then diluted with ethyl acetate and extracted with water, then the aqueous phase was extracted with ethyl acetate, the organic phases were combined, dried over anhydrous sodium sulfate and concentrated under reduced pressure, then isolated by column chromatography (eluent petroleum ether: ethyl acetate=5:1, V/V) to give the asymmetric spiro oxindole product (S, R) -3ab (35.6 mg,99% yieldl, 89:11d.r., >99% e.e.) as a colorless liquid.
1 H NMR(500MHz,CDCl 3 )δ7.48(s,1H),7.38(td,J=7.7,1.2Hz,1H),7.28(d,J=7.5Hz,1H),7.12(td,J=7.5,0.9Hz,1H),6.98(d,J=7.8Hz,1H),6.82(s,1H),6.29(dd,J=9.6,3.0Hz,1H),5.83(d,J=14.6Hz,1H),5.04(dd,J=9.6,2.1Hz,1H),3.32(s,3H),3.29(dt,J=14.6,2.7Hz,1H),3.16(d,J=17.8Hz,1H),2.71(d,J=17.8Hz,1H),2.29(s,3H),2.22(s,3H). 13 C NMR(126MHz,CDCl 3 )δ176.77,168.69,143.26,137.21,136.40,130.58,130.33,129.58,129.43,129.34,127.87,125.07,124.43,123.43,121.69,109.01,77.27,48.48,43.23,37.05,26.78,19.83,19.49.HRMS(ESI)m/z(M+H) + :calculated for(C 23 H 22 NO 3 ) + :360.1594,found:360.1597;[α] 20 D =318.2(c=0.41,CHCl 3 );The product was analyzed by HPLC to determine the enantiomeric excess:>99%e.e.(CHIRALPAK IA,hexane/i-PrOH=70/30,flow rate:1.0mL/min,T=30℃,254nm),t R (minor)=9.96min,t R (major)=14.33min.
Example 12: preparation of chiral spirooxindole compound (S, S, S) -3ab
Rhodium (I) bis (1, 5-cyclooctadiene) -trifluoromethanesulfonate (2.3 mg,0.005mmol,5 mol%) and (R) -1- [ (Sp) -2- (diphenylphosphino) ferrocene ] ethyl di-tert-butylphosphine (3.8 mg,0.007mmol,7 mol%) and 2.5mL of 1, 4-dioxane were added to a dry 10mL Schlenk reaction tube under nitrogen at 25℃and stirred for 1 hour; subsequently, a chiral azacyclo-carbene catalyst ent-NHC (4.2 mg,0.001mmol,10 mol%), an oxindole-derived α, β -unsaturated aldehyde 1a (18.7 mg,0.1mmol,1.0 eq.), 1, 4-dihydro-1, 4-epoxynaphthalene compound 2b (18.1 mg,0.105mmol,1.05 eq.), potassium phosphate (21.2 mg,0.1mmol,1.0 eq.) and 2.5mL of 1, 4-dioxane were added to the mixed system under nitrogen protection, and reacted at 15℃for 10 hours by thin layer chromatography to determine the reaction end point; the reaction was then diluted with ethyl acetate and extracted with water, then the aqueous phase was extracted with ethyl acetate, the organic phases were combined, dried over anhydrous sodium sulfate and concentrated under reduced pressure, then isolated by column chromatography (eluent petroleum ether: ethyl acetate=5:1, V/V) to give the asymmetric spiro oxindole product (S, S) -3ab (32.3 mg,90% yielder; >95:5d.r., >99% e.e.) as a colorless liquid.
1 H NMR(400MHz,CDCl 3 )δ7.47(s,1H),7.38(t,J=7.6Hz,1H),7.21–7.12(m,2H),6.94(d,J=7.8Hz,1H),6.83(s,1H),6.35(dd,J=9.7,3.0Hz,1H),6.26(d,J=13.9Hz,1H),4.97(d,J=9.6Hz,1H),3.27(s,3H),3.09(m,1H),3.07(d,J=17.6Hz,1H),2.83(d,J=17.5Hz,1H),2.28(s,3H),2.22(s,3H). 13 C NMR(101MHz,CDCl 3 )δ177.57,169.38,143.66,137.17,136.21,130.85,130.77,130.33,129.47,129.39,127.89,125.00,123.80,122.85,120.58,108.60,75.66,47.36,44.47,37.33,26.54,19.81,19.47.HRMS(ESI)m/z(M+H) + :calculated for(C 23 H 22 NO 3 ) + :360.1594,found:360.1605;[α] 20 D =65.3(c=0.25,CHCl 3 );The product was analyzed by HPLC to determine the enantiomeric excess:>99%e.e.(CHIRALPAK IB-N5,hexane/i-PrOH=80/20,flow rate:1.0mL/min,T=30℃,254nm),t R (major)=16.76min,t R (minor)=18.73min.
Example 13: preparation of chiral spirooxindole compound (R, R, R) -3ca
To a dry 10mL Schlenk reaction tube at 25deg.C under nitrogen atmosphere were added rhodium (I) bis (1, 5-cyclooctadiene) -trifluoromethanesulfonate (2.3 mg,0.005mmol,5 mol%) and (S) -1- [ (Rp) -2- (diphenylphosphino) ferrocene ] ethyl di-tert-butylphosphine (3.8 mg,0.007mmol,7 mol%) and 2.5mL 1, 4-dioxane, and stirred for 1 hour; subsequently, under nitrogen protection, a chiral azacyclo-carbene catalyst NHC (4.2 mg,0.001mmol,10 mol%), an oxindole-derived α, β -unsaturated aldehyde 1c (17.3 mg,0.1mmol,1.0 eq.), 1, 4-dihydro-1, 4-epoxynaphthalene compound 2a (15.1 mg,0.105mmol,1.05 eq.), potassium phosphate (21.2 mg,0.1mmol,1.0 eq.) and 2.5mL of 1, 4-dioxane were added to the mixed system, and reacted at 15 ℃ for 10 hours by thin layer chromatography, and the reaction was terminated; the reaction was then diluted with ethyl acetate and extracted with water, then the aqueous phase was extracted with ethyl acetate, the organic phases combined, dried over anhydrous sodium sulfate and concentrated under reduced pressure, then isolated by column chromatography (eluent petroleum ether: ethyl acetate=3:1, V/V) to give the asymmetric spiro oxindole product (R, R) -3ca (27.3 mg,86% yield;95:5d.r., >99% e.e.) as a white solid.
1 H NMR(500MHz,CDCl 3 )δ9.23(s,1H),7.72(d,J=7.6Hz,1H),7.37–7.25(m,3H),7.15(dd,J=7.6,1.4Hz,1H),7.11(td,J=7.5,1.0Hz,1H),7.07(dd,J=7.5,1.3Hz,1H),7.02(d,J=7.8Hz,1H),6.45(dd,J=9.7,3.0Hz,1H),6.31(d,J=14.0Hz,1H),5.20(dd,J=9.6,2.1Hz,1H),3.16(dt,J=14.1,2.6Hz,1H),3.09(d,J=17.6Hz,1H),2.89(d,J=17.5Hz,1H). 13 C NMR(126MHz,CDCl 3 )δ180.25,169.13,140.92,133.58,131.79,130.98,130.41,129.60,128.63,128.20,126.55,123.83,123.63,123.09,121.99,110.69,75.53,47.87,43.90,37.29.HRMS(ESI)m/z(M+H) + :calculated for(C 20 H 16 NO 3 ) + :318.1125,found:318.1123;[α] 20 D =-84.0(c=0.32,CHCl 3 );The product was analyzed by HPLC to determine the enantiomeric excess:>99%e.e.(CHIRALPAK OD-H,hexane/i-PrOH=70/30,flow rate:1.0mL/min,T=30℃,254nm),t R (minor)=6.49min,t R (major)=7.57min.
Example 14: preparation of chiral spirooxindole compound (R, S, S) -3ca
Rhodium (I) bis (1, 5-cyclooctadiene) -trifluoromethanesulfonate (2.3 mg,0.005mmol,5 mol%) and (R) -1- [ (Sp) -2- (diphenylphosphino) ferrocene ] ethyl di-tert-butylphosphine (3.8 mg,0.007mmol,7 mol%) and 2.5mL of 1, 4-dioxane were added to a dry 10mL Schlenk reaction tube under nitrogen at 25℃and stirred for 1 hour; subsequently, under nitrogen protection, a chiral azacyclo-carbene catalyst NHC (4.2 mg,0.001mmol,10 mol%), an oxindole-derived α, β -unsaturated aldehyde 1c (17.3 mg,0.1mmol,1.0 eq.), 1, 4-dihydro-1, 4-epoxynaphthalene compound 2a (15.1 mg,0.105mmol,1.05 eq.), potassium phosphate (21.2 mg,0.1mmol,1.0 eq.) and 2.5mL of 1, 4-dioxane were added to the mixed system, and reacted at 15 ℃ for 10 hours by thin layer chromatography, and the reaction was terminated; the reaction was then diluted with ethyl acetate and extracted with water, then the aqueous phase was extracted with ethyl acetate, the organic phases combined, dried over anhydrous sodium sulfate and concentrated under reduced pressure, then isolated by column chromatography (eluent petroleum ether: ethyl acetate=3:1, V/V) to give the asymmetric spiro oxindole product (R, S) -3ca (28.2 mg,89% yield;88:12d.r., >99% e.e.) as a white solid.
1 H NMR(500MHz,CDCl 3 )δ9.36(s,1H),7.72(d,J=7.6Hz,1H),7.38–7.25(m,4H),7.10(td,J=7.6,1.0Hz,1H),7.08–7.04(m,2H),6.38(dd,J=9.7,3.0Hz,1H),5.89(d,J=14.5Hz,1H),5.32(dd,J=9.6,2.1Hz,1H),3.35(dt,J=14.6,2.5Hz,1H),3.18(d,J=17.7Hz,1H),2.79(d,J=17.7Hz,1H). 13 C NMR(126MHz,CDCl 3 )δ179.33,168.50,140.47,133.12,131.73,130.56,129.88,129.56,128.66,128.41,126.51,125.28,123.53,123.25,122.92,111.13,77.12,49.02,42.99,36.96.HRMS(ESI)m/z(M+H) + :calculated for(C 20 H 16 NO 3 ) + :318.1125,found:318.1129;[α] 20 D =-298.1(c=0.45,CHCl 3 );The product was analyzed by HPLC to determine the enantiomeric excess:>99%e.e.(CHIRALPAK OD-H,hexane/i-PrOH=70/30,flow rate:1.0mL/min,T=30℃,254nm),t R (minor)=6.68min,t R (major)=7.52min.
Example 15: preparation of chiral spirooxindole compound (R, R, R) -3da
Rhodium (I) bis (1, 5-cyclooctadiene) -trifluoromethanesulfonate (2.3 mg,0.005mmol,5 mol%) and (S) -1- [ (Rp) -2- (diphenylphosphino) ferrocene ] ethyl di-tert-butylphosphine (3.8 mg,0.007mmol,7 mol%) and 1.0mL of 1, 4-dioxane were added to a dry 10mL Schlenk reaction tube under nitrogen atmosphere at 25℃and stirred for 1 hour; subsequently, under nitrogen protection, a chiral azacyclo-carbene catalyst NHC (4.2 mg,0.001mmol,10 mol%), an oxindole-derived α, β -unsaturated aldehyde 1d (21.7 mg,0.1mmol,1.0 eq.), 1, 4-dihydro-1, 4-epoxynaphthalene compound 2a (15.1 mg,0.105mmol,1.05 eq.), potassium phosphate (21.2 mg,0.1mmol,1.0 eq.) and 1.0mL of 1, 4-dioxane were added to the mixed system, and reacted at 15 ℃ for 10 hours by thin layer chromatography, and the reaction was terminated; the reaction was then diluted with ethyl acetate and extracted with water, then the aqueous phase was extracted with ethyl acetate, the organic phases were combined, dried over anhydrous sodium sulfate and concentrated under reduced pressure, and then isolated by column chromatography (eluent petroleum ether: ethyl acetate=5:1, V/V) to give the asymmetric spiro oxindole product (R, R) -3da (35.4 mg,98% yieldl; 88:12d.r.,99% e.e.) as a colorless liquid.
1 H NMR(400MHz,CDCl 3 )δ7.70(d,J=7.6Hz,1H),7.32(td,J=7.6,1.3Hz,1H),7.27–7.21(m,1H),7.06(dd,J=7.6,2.8Hz,2H),6.62(dd,J=8.3,2.3Hz,1H),6.51(d,J=2.3Hz,1H),6.42(dd,J=9.6,3.0Hz,1H),6.28(d,J=14.0Hz,1H),5.07(dd,J=9.6,2.1Hz,1H),3.85(s,3H),3.25(s,3H),3.09(dt,J=14.0,2.8Hz,1H),3.03(d,J=17.8Hz,1H),2.81(d,J=17.5Hz,1H). 13 C NMR(101MHz,CDCl 3 )δ178.03,169.25,161.18,144.96,133.60,131.79,130.85,128.54,128.09,126.46,123.66,123.60,122.02,121.80,107.43,96.74,75.53,55.76,46.88,44.16,37.68,26.57.HRMS(ESI)m/z(M+H) + :calculated for(C 22 H 20 NO 4 ) + :362.1387,found:362.1391;[α] 20 D =-82.5(c=0.56,CHCl 3 );The product was analyzedby HPLC to determine the enantiomeric excess:99%e.e.(CHIRALPAK IB,hexane/i-PrOH=70/30,flow rate:1.0mL/min,T=30℃,254nm),t R (minor)=12.92min,t R (major)=20.43min.
Example 16: preparation of chiral spirooxindole compound (R, S, S) -3da
Rhodium (I) bis (1, 5-cyclooctadiene) -trifluoromethanesulfonate (2.3 mg,0.005mmol,5 mol%) and (R) -1- [ (Sp) -2- (diphenylphosphino) ferrocene ] ethyl di-tert-butylphosphine (3.8 mg,0.007mmol,7 mol%) and 1.0mL of 1, 4-dioxane were added to a dry 10mL Schlenk reaction tube under nitrogen at 25℃and stirred for 1 hour; subsequently, under nitrogen protection, a chiral azacyclo-carbene catalyst NHC (4.2 mg,0.001mmol,10 mol%), an oxindole-derived α, β -unsaturated aldehyde 1d (21.7 mg,0.1mmol,1.0 eq.), 1, 4-dihydro-1, 4-epoxynaphthalene compound 2a (15.1 mg,0.105mmol,1.05 eq.), potassium phosphate (21.2 mg,0.1mmol,1.0 eq.) and 1.0mL of 1, 4-dioxane were added to the mixed system, and reacted at 15 ℃ for 10 hours by thin layer chromatography, and the reaction was terminated; the reaction was then diluted with ethyl acetate and extracted with water, then the aqueous phase was extracted with ethyl acetate, the organic phases were combined, dried over anhydrous sodium sulfate and concentrated under reduced pressure, then isolated by column chromatography (eluent petroleum ether: ethyl acetate=5:1, V/V) to give the asymmetric spiro oxindole product (R, S) -3da (18.8 mg,52% yieldl; 85:15d.r.,95% e.e.) as a colorless liquid.
1 H NMR(500MHz,CDCl 3 )δ7.70(d,J=7.6Hz,1H),7.33(td,J=7.6,1.4Hz,1H),7.30–7.23(m,1H),7.18(d,J=8.3Hz,1H),7.05(dd,J=7.5,1.3Hz,1H),6.60(dd,J=8.2,2.4Hz,1H),6.55(d,J=2.3Hz,1H),6.36(dd,J=9.6,3.0Hz,1H),5.84(d,J=14.6Hz,1H),5.13(dd,J=9.7,2.1Hz,1H),3.84(s,3H),3.33–3.27(m,1H),3.30(s,3H),3.16(d,J=17.8Hz,1H),2.68(d,J=17.8Hz,1H). 13 C NMR(126MHz,CDCl 3 )δ177.22,168.58,161.10,144.63,133.32,131.77,130.44,128.59,128.31,126.44,125.81,123.19,123.12,121.21,106.98,97.25,77.22,55.74,48.08,43.01,37.47,26.84.HRMS(ESI)m/z(M+H) + :calculated for(C 22 H 20 NO 4 ) + :362.1387,found:3621397;[α] 20 D =-314.2(c=0.30,CHCl 3 );The product was analyzedby HPLC to determine the enantiomeric excess:95%e.e.(CHIRALPAK IB,hexane/i-PrOH=70/30,flow rate:1.0mL/min,T=30℃,254nm),t R (minor)=14.465min,t R (major)=19.87min.
Example 17: preparation of chiral spirooxindole compound (R, R, R) -3ac
Rhodium (I) bis (1, 5-cyclooctadiene) -trifluoromethanesulfonate (2.3 mg,0.005mmol,5 mol%) and (S) -1- [ (Rp) -2- (diphenylphosphino) ferrocene ] ethyl di-tert-butylphosphine (3.8 mg,0.007mmol,7 mol%) and 1.0mL of 1, 4-dioxane were added to a dry 10mL Schlenk reaction tube under nitrogen atmosphere at 25℃and stirred for 1 hour; subsequently, under nitrogen protection, a chiral azacyclo-carbene catalyst NHC (4.2 mg,0.001mmol,10 mol%), an oxindole-derived α, β -unsaturated aldehyde 1a (18.7 mg,0.1mmol,1.0 eq.), 1, 4-dihydro-1, 4-epoxynaphthalene compound 2c (19.8 mg,0.105mmol,1.05 eq.), potassium phosphate (21.2 mg,0.1mmol,1.0 eq.) and 1.0mL of 1, 4-dioxane were added to the mixed system, and reacted at 15 ℃ for 10 hours by thin layer chromatography, and the reaction was terminated; the reaction was then diluted with ethyl acetate and extracted with water, then the aqueous phase was extracted with ethyl acetate, the organic phases combined, dried over anhydrous sodium sulfate and concentrated under reduced pressure, then isolated by column chromatography (eluent petroleum ether: ethyl acetate=5:1, V/V) to give the asymmetric spiro oxindole product (R, R) -3ac (27.8 mg,74% yieldl; 93:7d.r.,97% e.e.) as a white solid.
1 H NMR(400MHz,CDCl 3 )δ7.38(td,J=7.6,1.5Hz,1H),7.23–7.10(m,3H),6.94(d,J=7.8Hz,1H),6.54(s,1H),6.27(dd,J=9.7,3.0Hz,1H),6.19(d,J=14.3Hz,1H),5.98–5.93(m,2H),4.94(dd,J=9.6,2.1Hz,1H),3.27(s,3H),3.11–3.04(m,1H),3.04(d,J=17.5Hz,1H),2.83(d,J=17.5Hz,1H). 13 C NMR(101MHz,CDCl 3 )δ177.51,169.03,147.91,147.26,143.65,130.55,130.15,129.53,128.04,125.96,123.82,122.88,119.96,108.65,107.13,105.27,101.39,75.75,47.30,44.23,37.29,26.56.HRMS(ESI)m/z(M+H) + :calculated for(C 22 H 18 NO 5 ) + :376.1179,found:376.1185;[α] 20 D =-20.7(c=0.41,CHCl 3 );The product was analyzedby HPLC to determine the enantiomeric excess:97%e.e.(CHIRALPAK IB-N5,hexane/i-PrOH=85/15,flow rate:1.0mL/min,T=30℃,254nm),t R (minor)=38.61min,t R (major)=44.20min.
Example 18: preparation of chiral spirooxindole compound (R, S, S) -3ac
Rhodium (I) bis (1, 5-cyclooctadiene) -trifluoromethanesulfonate (2.3 mg,0.005mmol,5 mol%) and (R) -1- [ (Sp) -2- (diphenylphosphino) ferrocene ] ethyl di-tert-butylphosphine (3.8 mg,0.007mmol,7 mol%) and 1.0mL of 1, 4-dioxane were added to a dry 10mL Schlenk reaction tube under nitrogen at 25℃and stirred for 1 hour; subsequently, under nitrogen protection, a chiral azacyclo-carbene catalyst NHC (4.2 mg,0.001mmol,10 mol%), an oxindole-derived α, β -unsaturated aldehyde 1a (18.7 mg,0.1mmol,1.0 eq.), 1, 4-dihydro-1, 4-epoxynaphthalene compound 2c (19.8 mg,0.105mmol,1.05 eq.), potassium phosphate (21.2 mg,0.1mmol,1.0 eq.) and 1.0mL of 1, 4-dioxane were added to the mixed system, and reacted at 15 ℃ for 10 hours by thin layer chromatography, and the reaction was terminated; the reaction was then diluted with ethyl acetate and extracted with water, then the aqueous phase was extracted with ethyl acetate, the organic phases combined, dried over anhydrous sodium sulfate and concentrated under reduced pressure, then isolated by column chromatography (eluent petroleum ether: ethyl acetate=5:1, V/V) to give the asymmetric spiro oxindole product (R, S) -3ac (37.2 mg,99% yieldl; 90:10d.r., >99% e.e.) as a white solid.
1 H NMR(500MHz,CDCl 3 )δ7.38(td,J=7.8,1.2Hz,1H),7.29–7.24(m,1H),7.21(d,J=1.0Hz,1H),7.12(td,J=7.6,1.0Hz,1H),6.97(d,J=7.8Hz,1H),6.53(s,1H),6.20(dd,J=9.7,3.0Hz,1H),5.95(dd,J=8.6,1.4Hz,2H),5.75(d,J=15.0Hz,1H),5.02(dd,J=9.6,2.2Hz,1H),3.31(s,3H),3.28–3.24(m,1H),3.14(d,J=17.8Hz,1H),2.69(d,J=17.8Hz,1H). 13 C NMR(126MHz,CDCl 3 )δ176.66,168.33,147.90,147.36,143.22,130.11,129.47,129.46,127.73,125.90,125.10,123.45,121.13,109.06,107.16,104.78,101.42,77.34,48.38,43.03,37.03,26.80.HRMS(ESI)m/z(M+H) + :calculated for(C 22 H 18 NO 5 ) + :376.1179,found:376.1185;[α] 20 D =-360.0(c=0.58,CHCl 3 );The product was analyzed by HPLC to determine the enantiomeric excess:>99%e.e.(CHIRALPAK IA,hexane/i-PrOH=70/30,flow rate:1.0mL/min,T=30℃,254nm),t R (minor)=12.24min,t R (major)=18.48min.
Example 19: preparation of chiral spirooxindole compound (R, R, R) -3ea
Rhodium (I) bis (1, 5-cyclooctadiene) -trifluoromethanesulfonate (2.3 mg,0.005mmol,5 mol%) and (S) -1- [ (Rp) -2- (diphenylphosphino) ferrocene ] ethyl di-tert-butylphosphine (3.8 mg,0.007mmol,7 mol%) and 1.0mL of 1, 4-dioxane were added to a dry 10mL Schlenk reaction tube under nitrogen atmosphere at 25℃and stirred for 1 hour; subsequently, under nitrogen protection, a chiral azacyclo-carbene catalyst NHC (4.2 mg,0.001mmol,10 mol%), an oxindole-derived α, β -unsaturated aldehyde 1e (20.1 mg,0.1mmol,1.0 eq.), 1, 4-dihydro-1, 4-epoxynaphthalene compound 2a (15.1 mg,0.105mmol,1.05 eq.), potassium phosphate (21.2 mg,0.1mmol,1.0 eq.) and 1.0mL of 1, 4-dioxane were added to the mixed system, and reacted at 15 ℃ for 10 hours by thin layer chromatography, and the reaction was terminated; the reaction was then diluted with ethyl acetate and extracted with water, then the aqueous phase was extracted with ethyl acetate, the organic phases combined, dried over anhydrous sodium sulfate and concentrated under reduced pressure, then isolated by column chromatography (eluent petroleum ether: ethyl acetate=5:1, V/V) to give the asymmetric spiro oxindole product (R, R) -3ea (27.3 mg,79% yieldl, 91:9d.r., >99% e.e.) as a colorless liquid.
1 H NMR(500MHz,CDCl 3 )δ7.71(d,J=7.6Hz,1H),7.33(td,J=7.6,1.3Hz,1H),7.30–7.22(m,1H),7.20–7.14(m,1H),7.05(dd,J=7.6,1.3Hz,1H),6.99(d,J=1.7Hz,1H),6.83(d,J=7.9Hz,1H),6.42(dd,J=9.6,3.1Hz,1H),6.30(d,J=13.9Hz,1H),5.06(dd,J=9.6,2.1Hz,1H),3.26(s,3H),3.13(dt,J=14.0,2.5Hz,1H),3.08(d,J=17.4Hz,1H),2.82(d,J=17.5Hz,1H),2.33(s,3H). 13 C NMR(126MHz,CDCl 3 )δ177.45,169.34,141.26,133.59,133.50,131.76,130.84,130.21,129.78,128.56,128.14,126.48,123.73,123.67,121.97,108.43,75.59,47.33,44.23,37.41,26.61,21.26.HRMS(ESI)m/z(M+H) + :calculated for(C 22 H 20 NO 3 ) + :346.1438,found:346.1440;[α] 20 D =-79.0(c=0.30,CHCl 3 );The product was analyzed by HPLC to determine the enantiomeric excess:>99%e.e.(CHIRALPAK IC,hexane/i-PrOH=70/30,flow rate:1.0mL/min,T=30℃,254nm),t R (major)=45.026min,t R (minor)=59.48min.
Example 20: preparation of chiral spirooxindole compounds (R, R, R) -fa
Rhodium (I) bis (1, 5-cyclooctadiene) -trifluoromethanesulfonate (2.3 mg,0.005mmol,5 mol%) and (S) -1- [ (Rp) -2- (diphenylphosphino) ferrocene ] ethyl di-tert-butylphosphine (3.8 mg,0.007mmol,7 mol%) and 1.0mL of 1, 4-dioxane were added to a dry 10mL Schlenk reaction tube under nitrogen atmosphere at 25℃and stirred for 1 hour; subsequently, under nitrogen protection, a chiral azacyclo-carbene catalyst NHC (4.2 mg,0.001mmol,10 mol%), an oxindole-derived α, β -unsaturated aldehyde 1f (20.1 mg,0.1mmol,1.0 eq.), 1, 4-dihydro-1, 4-epoxynaphthalene compound 2a (15.1 mg,0.105mmol,1.05 eq.), potassium phosphate (21.2 mg,0.1mmol,1.0 eq.) and 1.0mL of 1, 4-dioxane were added to the mixed system, and reacted at 15 ℃ for 10 hours by thin layer chromatography, and the reaction was terminated; the reaction was then diluted with ethyl acetate and extracted with water, then the aqueous phase was extracted with ethyl acetate, the organic phases combined, dried over anhydrous sodium sulfate and concentrated under reduced pressure, then isolated by column chromatography (eluent petroleum ether: ethyl acetate=5:1, V/V) to give the asymmetric spiro oxindole product (R, R) -3ea (31.4 mg,91% yield,92:8d.r., >99% e.e.) as a colorless liquid.
1 H NMR(400MHz,CDCl 3 )δ7.74–7.67(m,1H),7.32(td,J=7.6,1.4Hz,1H),7.29–7.21(m,1H),7.12–7.08(m,1H),7.05(dd,J=7.5,1.3Hz,1H),7.04–6.97(m,2H),6.42(dd,J=9.6,3.0Hz,1H),6.30(d,J=13.9Hz,1H),5.07(dd,J=9.7,2.2Hz,1H),3.55(s,3H),3.09(dt,J=14.0,2.6Hz,1H),3.03(d,J=17.5Hz,1H),2.80(d,J=17.5Hz,1H),2.64(s,3H). 13 C NMR(101MHz,CDCl 3 )δ178.17,169.22,141.43,133.61,133.18,131.77,130.84,130.74,128.54,128.10,126.46,123.73,123.67,121.98,120.74,120.39,75.56,46.70,44.31,37.76,29.86,19.12.HRMS(ESI)m/z(M+H) + :calculated for(C 22 H 20 NO 3 ) + :346.1438,found:346.1442;[α] 20 D =-87.2(c=0.43,CHCl 3 );The product was analyzed by HPLC to determine the enantiomeric excess:>99%e.e.(CHIRALPAK IB,hexane/i-PrOH=70/30,flow rate:1.0mL/min,T=30℃,254nm),t R (major)=11.59min,t R (minor)=14.01min.
Example 21: preparation of chiral spirooxindole compound (R, R, R) -ga
To a dry 10mL Schlenk reaction tube at 25deg.C under nitrogen atmosphere were added rhodium (I) bis (1, 5-cyclooctadiene) -trifluoromethanesulfonate (2.3 mg,0.005mmol,5 mol%) and (S) -1- [ (Rp) -2- (diphenylphosphino) ferrocene ] ethyl di-tert-butylphosphine (3.8 mg,0.007mmol,7 mol%) and 2.5mL 1, 4-dioxane, and stirred for 1 hour; subsequently, under nitrogen protection, a chiral azacyclo-carbene catalyst NHC (4.2 mg,0.001mmol,10 mol%), an oxindole-derived α, β -unsaturated aldehyde 1g (20.1 mg,0.1mmol,1.0 eq.), 1, 4-dihydro-1, 4-epoxynaphthalene compound 2a (15.1 mg,0.105mmol,1.05 eq.), potassium phosphate (21.2 mg,0.1mmol,1.0 eq.) and 2.5mL of 1, 4-dioxane were added to the mixed system, and reacted at 15 ℃ for 10 hours by thin layer chromatography spot plate to determine the reaction end point; the reaction was then diluted with ethyl acetate and extracted with water, then the aqueous phase was extracted with ethyl acetate, the organic phases combined, dried over anhydrous sodium sulfate and concentrated under reduced pressure, then isolated by column chromatography (eluent petroleum ether: ethyl acetate=5:1, V/V) to give the asymmetric spiro oxindole product (R, R) -3ga (31.8 mg,92% yieldd, 95:5d.r., >99% e.e.) as a white solid.
1 H NMR(400MHz,CDCl 3 )δ7.71(dd,J=7.6,1.4Hz,1H),7.37(td,J=7.7,1.5Hz,1H),7.35–7.30(m,1H),7.29–7.23(m,1H),7.19(dd,J=7.4,1.4Hz,1H),7.13(td,J=7.5,1.0Hz,1H),7.06(dd,J=7.5,1.3Hz,1H),6.96(dd,J=7.9,0.9Hz,1H),6.43(dd,J=9.7,3.0Hz,1H),6.32(d,J=13.9Hz,1H),5.05(dd,J=9.6,2.1Hz,1H),3.89(dq,J=14.5,7.3Hz,1H),3.75(dq,J=14.3,7.1Hz,1H),3.17–3.11(m,1H),3.07(d,J=17.5Hz,1H),2.84(d,J=17.5Hz,1H),1.31(t,J=7.2Hz,3H). 13 C NMR(126MHz,CDCl 3 )δ177.01,169.21,142.73,133.51,131.71,130.89,130.27,129.49,128.56,128.12,126.48,123.68,123.59,123.06,121.67,108.77,75.46,47.08,44.12,37.21,35.03,12.95.HRMS(ESI)m/z(M+H) + :calculated for(C 22 H 20 NO 3 ) + :346.1438,found:346.1446;[α] 20 D =-95.8(c=0.25,CHCl 3 );The product was analyzed by HPLC to determine the enantiomeric excess:>99%e.e.(CHIRALPAK IG,hexane/i-PrOH=70/30,flow rate:1.0mL/min,T=30℃,254nm),t R (minor)=39.23min,t R (major)=46.18min.
Example 22: preparation of chiral spirooxindole compounds (R, R, R) -ha
To a dry 10mL Schlenk reaction tube at 25deg.C under nitrogen atmosphere were added rhodium (I) bis (1, 5-cyclooctadiene) -trifluoromethanesulfonate (2.3 mg,0.005mmol,5 mol%) and (S) -1- [ (Rp) -2- (diphenylphosphino) ferrocene ] ethyl di-tert-butylphosphine (3.8 mg,0.007mmol,7 mol%) and 2.5mL 1, 4-dioxane, and stirred for 1 hour; subsequently, under nitrogen protection, a chiral azacyclo-carbene catalyst NHC (4.2 mg,0.001mmol,10 mol%), an oxindole-derived α, β -unsaturated aldehyde 1h (24.9 mg,0.1mmol,1.0 eq.), 1, 4-dihydro-1, 4-epoxynaphthalene compound 2a (15.1 mg,0.105mmol,1.05 eq.), potassium phosphate (21.2 mg,0.1mmol,1.0 eq.) and 2.5mL of 1, 4-dioxane were added to the mixed system, and reacted at 15 ℃ for 10 hours by thin layer chromatography, and the reaction was terminated; the reaction was then diluted with ethyl acetate and extracted with water, then the aqueous phase was extracted with ethyl acetate, the organic phases combined, dried over anhydrous sodium sulfate and concentrated under reduced pressure, then isolated by column chromatography (eluent petroleum ether: ethyl acetate=5:1, V/V) to give the asymmetric spiro oxindole product (R, R) -3ha (31.1 mg,77% yield,93:7d.r., >99% e.e.) as a white solid.
1 H NMR(500MHz,CDCl 3 )δ7.71(d,J=7.6Hz,1H),7.62–7.51(m,2H),7.44(td,J=6.2,5.8,3.1Hz,3H),7.36–7.23(m,4H),7.18(t,J=7.5Hz,1H),7.07(d,J=7.4Hz,1H),6.93(d,J=7.9Hz,1H),6.49(dd,J=9.7,3.0Hz,1H),6.34(d,J=13.9Hz,1H),5.27(dd,J=9.6,2.1Hz,1H),3.23(d,J=17.6Hz,1H),3.24–3.18(m,1H),2.96(d,J=17.5Hz,1H). 13 C NMR(126MHz,CDCl 3 )δ176.98,169.07,143.58,133.79,133.40,131.66,131.26,129.90,129.47,128.67,128.64,128.20,126.57,126.51,124.33,123.77,123.20,121.35,109.96,75.40,47.37,44.77,37.35.HRMS(ESI)m/z(M+H) + :calculated for(C 26 H 20 NO 3 ) + :394.1438,found:394.1437;[α] 20 D =-53.7(c=0.46,CHCl 3 );The product was analyzed by HPLC to determine the enantiomeric excess:>99%e.e.(CHIRALPAK IG,hexane/i-PrOH=70/30,flow rate:1.0mL/min,T=30℃,254nm),t R (major)=60.09min,t R (minor)=65.28min.
Example 23: test of Activity of four isomers of chiral spirooxindole Compounds 3aa, 3ba and 3ab on HeLa cells
HeLa cells were cultured in DMEM dishes containing 10% fetal bovine serum and 100units/ml penicillin+100. Mu.g/ml streptomycin. Four stereoisomers of compounds 3aa, 3ba and 3ab were screened at a concentration of 5 μm to test changes associated with chromosomal mismatches during mid-front and late onset of HeLa cells. Each compound inhibited mitosis, with (R, S) -3aa, (R, S) -3ba and (R, S) -3ab being most pronounced.
Example 24: imaging test of chiral spirooxindole Compounds (R, S, S) -3aa, (R, S, S) -3ba and (R, S, S) -3ab on Hela cell Activity
For time-lapse imaging, heLa cells were cultured in glass bottom dishes (MatTek) and transfected with mCherry-H2B and GFP-Tubulin to reveal chromosomes and microtubules. The plasmid was purified with a purification kit (QIAGEN) and cells were transfected with Lipofectamine 3000 (Invitrogen). Cells were added to carbon dioxide free medium (Gibco) with 10% fetal bovine serum and 2mM glutamine. Before imaging for 1 hour, 5. Mu.M of the corresponding compound in dimethyl sulfoxide was added, and the control group was added with dimethyl sulfoxide. During imaging, the dishes were placed in a sealed chamber at 37 ℃. Live cell images were taken every 3 minutes using a DeltaVision microscope system and deconvolved, and the resulting images were as follows. From the images, it can be concluded that the mitosis process of Hela cells of the experimental group is significantly slower compared with the control group, i.e. the chiral spiro oxindole compounds (R, S) -3aa, (R, S) -3ba and (R, S) -3ab all have a significant inhibitory effect on the mitosis process of Hela cells.

Claims (9)

1. A chiral spiro oxindole compound, which is characterized by being an optical active compound with a structure shown in the following formula I, and comprising stereoisomers with the same chemical general formula:
wherein: * Represents a chiral carbon atom; the substituent R is selected from hydrogen, C 1-10 Alkyl or aryl; ar is an aromatic ring or a substituted aromatic ring; ar' is an aromatic ring or a substituted aromatic ring; r is R 1 、R 2 、R 3 、R 4 、R 5 、R 6 Are independently selected from hydrogen, halogen, C 1-4 A hydrocarbyl group or a hydrocarbyloxy group.
2. A process for the diastereoisomeric divergent preparation of a chiral spirocyclic oxindole compound according to claim 1, wherein:
the method comprises the steps of taking indole oxide derived alpha, beta-unsaturated aldehyde 1 and 1, 4-dihydro-1, 4-epoxynaphthalene compound 2 as starting materials, taking bis (1, 5-cyclooctadiene) -trifluoro rhodium methanesulfonate (I) as a metal catalyst, taking chiral phosphine reagent as a ligand and chiral aza-heterocyclic carbene as an organic catalyst, carrying out asymmetric [3+3] cyclization reaction under the assistance of alkali, and separating and purifying to obtain a target product I;
the synthetic route is as follows:
in the above formula: * Represents a chiral carbon atom; the substituent R is selected from hydrogen, C 1-10 Alkyl or aryl; ar is an aromatic ring or a substituted aromatic ring; ar' is an aromatic ring or a substituted aromatic ring; r is R 1 、R 2 、R 3 、R 4 、R 5 、R 6 Are independently selected from hydrogen, halogen, C 1-4 A hydrocarbyl group or a hydrocarbyloxy group.
3. The preparation method according to claim 2, characterized by comprising the steps of:
mixing a bis (1, 5-cyclooctadiene) -trifluoro rhodium (I) mesylate metal catalyst and a chiral phosphine ligand in an organic solvent under the nitrogen atmosphere, then adding a chiral azacyclo-carbene catalyst, an alpha, beta-unsaturated aldehyde 1 derived from oxindole, a 1, 4-dihydro-1, 4-epoxynaphthalene compound 2, alkali and the organic solvent into the mixed system under the protection of nitrogen, and reacting for 4-72 hours at the temperature of 10-60 ℃, wherein a thin layer chromatography point plate determines the reaction end point; the reaction system is then diluted with ethyl acetate and extracted with water, the aqueous phase is then extracted with ethyl acetate, the organic phases are combined, dried over anhydrous sodium sulfate and concentrated under reduced pressure, and finally the asymmetric spiro oxindole product I is obtained by column chromatography separation.
4. A method of preparation according to claim 2 or 3, characterized in that:
the chiral phosphine ligand is selected from
Wherein: r is R 7 、R 8 、R 9 、R 10 、R 11 Each independently selected from hydrogen, halogen, or substituted or unsubstituted: c (C) 1-10 Alkyl, C 3-10 Cycloalkyl, 2-furyl or C 6-20 Aryl groups of (a).
5. A method of preparation according to claim 2 or 3, characterized in that:
the chiral azacyclo-carbene catalyst is selected from the group consisting of:
wherein: r is R 12 、R 13 、R 14 Each independently selected from hydrogen, halogen, or substituted or unsubstituted: c (C) 1-10 Alkyl, C 3-10 Cycloalkyl, 2-furyl or C 6-20 Aryl groups of (a).
6. A method of preparation according to claim 2 or 3, characterized in that:
the alkali is potassium phosphate, potassium hydrogen phosphate, lithium carbonate, sodium carbonate, potassium carbonate, triethylamine, diisopropylethylamine, tetramethyl ethylenediamine or N-methylmorpholine.
7. A method of preparation according to claim 2 or 3, characterized in that:
the molar ratio of the rhodium (1, 5-cyclooctadiene) -triflate (I) to the indole oxide-derived alpha, beta-unsaturated aldehyde 1 is 0.025:1-1:1; the molar ratio of chiral phosphine ligand to oxindole derived alpha, beta-unsaturated aldehyde 1 is 0.025:1-1:1; the molar ratio of the chiral N-heterocyclic carbene catalyst to the oxindole-derived alpha, beta-unsaturated aldehyde 1 is 0.025:1-1:1; the molar equivalent ratio of the oxindole-derived alpha, beta-unsaturated aldehyde 1 to the 1, 4-dihydro-1, 4-epoxynaphthalene compound 2 is 1:1-1:5; the molar ratio of the oxindole-derived alpha, beta-unsaturated aldehyde 1 to the alkali is 1:0.1-1:5.
8. The method of manufacturing according to claim 7, wherein:
the molar ratio of the rhodium (I) bis (1, 5-cyclooctadiene) -triflate to the chiral phosphine ligand is 1:1-1:4.
9. A method of preparation according to claim 3, characterized in that:
the organic solvent is 1, 4-dioxane, dichloromethane, dichloroethane, dimethyl sulfoxide, N-methylpyrrolidone, N-dimethylformamide, N-dimethylacetamide, ethyl acetate, chloroform, tetrahydrofuran, acetonitrile, toluene, ethylbenzene, fluorobenzene, chlorobenzene, bromobenzene, xylene or trimethylbenzene.
CN202310001621.0A 2023-01-03 2023-01-03 Chiral spiro oxindole compound and preparation method thereof Pending CN116554185A (en)

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