CN114195793A - Nitrogen-aryl indole lactam compound, application thereof and preparation method of C-N axis-containing nitrogen-aryl indole axial chiral amino acid - Google Patents
Nitrogen-aryl indole lactam compound, application thereof and preparation method of C-N axis-containing nitrogen-aryl indole axial chiral amino acid Download PDFInfo
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Abstract
The invention discloses a nitrogen aryl indole lactam compound, application thereof and a preparation method of C-N axis nitrogen aryl indole axial chiral amino acid, belonging to the field of chemical synthesis. The invention uses cinchona alkaloid derivative organic micromolecule catalyst to catalyze alcohol and prochiral nitrogen aryl indole lactam substrate to carry out dynamic kinetic resolution reaction under mild condition, and can construct optically pure axial chirality C-N axial amino acid ester compound. The invention has good substrate universality, and the target product can be obtained with excellent yield and stereoselectivity on 3, 4, 5 and 6 positions of indole and the benzene ring connected with the indole.
Description
Technical Field
The invention belongs to the field of chemical synthesis, and particularly relates to a method for synthesizing an axial chiral compound of C-N axial chiral amino acid ester by using nitrogen aryl indole lactam as a substrate.
Background
Chiral amino acids are one of the most important basic substances in nature and are the basic units constituting proteins. In addition, chiral amino acids are widely used in the fields of medicine, chemical synthesis, food industry, and the like. In view of the importance of chiral amino acids, the synthesis and application of chiral amino acids have been the focus of research in organic chemistry and biochemistry. As a novel chiral amino acid, the axial chiral amino acid has potential application value in the chemical and biological fields and is worthy of deep research. However, the synthesis and application of axial chiral amino acids are rarely reported, especially the construction of C-N axial chiral amino acids, compared to the central chiral amino acids which have been extensively studied. The development of a simple and efficient synthetic method becomes a new opportunity for the discovery and development of amino acid-containing drugs and materials.
Disclosure of Invention
The invention provides a method for constructing and synthesizing an axial chiral compound of C-N axial chiral amino acid ester by taking nitrogen aryl indole lactam as a substrate to perform dynamic kinetic resolution.
In order to solve the technical problem, the technical scheme provided by the invention is as follows: a nitrogen aryl indole lactam compound, the structural formula of which is formula I:
in order to solve the technical problem, the technical scheme provided by the invention is as follows:
preferably, the method for synthesizing the chiral amino acid ester compound with the C-N axis by using the nitrogen aryl indole lactam as the substrate uses the nitrogen aryl indole lactam with the structural formula 3 and the alcohol with the structural formula 2 as raw materials, and reacts for 24 hours at room temperature under the conditions that chiral alkali is used as a catalyst and 1, 2 dichloroethane is used as a solvent until the reaction is completed, and the reaction solution is purified by a silica gel column to obtain a target product compound 3ar-abq with the structural formula 3;
wherein: r1Is halogen atom F, Cl, Br, phenyl or carbethoxy; r2Is a halogen atom I, Cl, Br, R3Is halogen atom F, Cl, Br, methyl or methoxy; RF is fluorine atom, trifluoromethyl, difluoromethyl or monofluoromethyl; ar is phenyl, thiopheneIs thiopheneNaphthyl radicalThienothiophenesFuran compoundsBenzofuran derivativesPyridine compoundR is benzyl, cyclopentyl, methyl or ethyl.
Preferably, the nitrogen aryl indole lactam compound is used as a substrate to synthesize an axial chiral compound with C-N axial chiral amino acid ester, and the nitrogen aryl indole lactam compound can be subjected to ring-opening reaction with alcohol under the condition of using a chiral base as a catalyst. Preferably, the method for synthesizing the axial chiral compound with C-N axial chiral amino acid ester by using the nitrogen aryl indole lactam as a substrate uses the nitrogen aryl indole lactam compound (when R is R) of the structural formula 11Is methyl, R2Is hydrogen, R3Hydrogen, Ar is phenyl) and different alcohols with the structural formula of 2 are used as raw materials, the raw materials are stirred at room temperature under the conditions that chiral base is used as a catalyst and 1, 2 dichloroethane is used as a solvent until the reaction is finished, and the reaction liquid is purified by a silica gel column to obtain a target product compound 3a-3aq with the structural formula of 3;
wherein: alcohols with R as different substituents
Preferably, the amount of the chiral base is 10 mol% of the amount of the compound of the formula I; the molar ratio of the compound of formula I to the compound of formula 2 is 1: 1.2; the amount of 1, 2-dichloroethane solvent used was 0.1M.
Preferably, the alcohol moiety of compound 3 has the following structural formula:
in order to solve the technical problem of the invention, the invention provides another technical scheme that: a compound, said compound 3ar-3bq having the formula:
has the advantages that:
the invention relates to a method for synthesizing an axial chiral compound with C-N axial chiral amino acid ester by using nitrogen aryl indole lactam as a substrate and application thereof. The invention discloses a method for efficiently constructing an axial chiral compound with C-N axial chiral amino acid ester by using a chiral cinchona derivative organic micromolecule catalyst to catalyze alcohol and an N-aryl indole lactam substrate to perform dynamic kinetic ring-opening reaction under mild conditions. The invention has good substrate universality, and when different alcohols are adopted to open the ring lactam and substituent groups are placed on different positions of the nitrogen aryl indole lactam substrate, the target product can be obtained with excellent yield and stereoselectivity.
The invention discloses a novel method for synthesizing an axial chiral compound of C-N axial chiral amino acid ester by using nitrogen aryl indole lactam as a substrate.
Under mild reaction conditions, the invention uses a chiral base catalyst to catalyze and activate alcohol and nitrogen aryl indole lactam as substrates to carry out dynamic kinetic ring-opening reaction, and a C-N axis chiral amino acid ester compound with a novel structure is constructed in one step. The method has the advantages of mild condition, high reaction efficiency and good substrate universality, and the reported dynamic kinetic ring-opening reaction of the organic-catalyzed nitrogen aryl indole lactam provides an important method for synthesizing various axial chiral amino acids and has the potential of being applied to industrial production.
Drawings
FIG. 1 is a hydrogen spectrum of Compound 1 a; FIG. 2 carbon spectrum of Compound 1 a; FIG. 3 is a hydrogen spectrum of Compound 1 c; FIG. 4 is a carbon spectrum of Compound 1 c; FIG. 5 is a hydrogen spectrum of Compound 1 d; FIG. 6 is a carbon spectrum of Compound 1 d; FIG. 7. Hydrogen spectrum of Compound 1 e; FIG. 8. carbon spectra of Compound 1 e; fig. 9.19F NMR Spectrum of 1 e; FIG. 10 shows the hydrogen spectrum of Compound 1 f; FIG. 11 carbon spectra of Compound 1 f; FIG. 12 hydrogen spectrum of Compound 1 g; FIG. 13 carbon spectrum of Compound 1 g; fig. 14.19F NMRSpectrum of compound 1 g; FIG. 15 hydrogen spectrum of Compound 1 h; FIG. 16. carbon spectrum of Compound 1 h; FIG. 17. Hydrogen spectra of Compound 1 i; FIG. 18 carbon spectra of Compound 1 i; FIG. 19. Hydrogen spectrum of Compound 1 s; FIG. 20 carbon spectra of Compound 1s
Detailed Description
The chemicals used below were all purchased from commercial products. The solvent is a commercial ultra-dry solvent. Thin Layer Chromatography (TLC) Using a 60F254 silica gel plate, color was developed under UV light at 254 nm.1H NMR and13c NMR was characterized using a Bruker400M NMR spectrometer with deuterated chloroform as solvent. The unit of the coupling constant is Hz.. Optical rotation was measured using a Jasco P-1030 polarimeter. Enantiomeric excess was measured by Shimadzu LC-20AD HPLC High Resolution Mass Spectrometry (HRMS) was performed using a Waters Q-TOF Permier Spectrometer.
The following are the hand alkalines used in the examples as shown below
Example 1
1. Preparation of the starting materials (taking 1a as an example, otherwise analogously)
In the first step, cesium carbonate (12mmol, 1.2equiv) was added to a solution of 2-carboxylic acid ethyl-substituted indole-2-carboxylic acid ester (10mmol, 1.0equiv) in 50 ml of N, N-dimethylformamide. The mixture was stirred at room temperature for 10 minutes, then 1-fluoro-2-nitrobenzene (15mmol, 1.5equiv) was added and the mixture was stirred at 150 degrees for 2 hours. The reaction was quenched with water and diluted with ethyl acetate. The combined organic layers were washed with brine and then dried over anhydrous sodium sulfate. The resulting mixture was filtered, concentrated in vacuo and purified by silica gel column chromatography using 10% ethyl acetate/hexanes as the eluent to give the desired product as a yellow oil (0.82g, 7.5mmol, 75% yield).
In the second step, a solution of the product obtained above (7.5mmol, 1.0equiv) and iron powder (45mmol, 6.0equiv) in 75mL of acetic acid was heated under reflux for 4 hours. The reaction mixture was cooled, concentrated in vacuo and poured into 100mL of 1M aqueous HCl, stirred, then filtered, washed sequentially with 1M (30mL) HCl, water, ethyl acetate, diethyl ether, then dried. 1-methylindolo [1, 2-a ] quinoxalin-6 (5H) -one as a white solid (1.71g, 6.9mmol, 92% yield).
Third step, a 100mL two-necked round-bottomed flask was taken, charged with a magnetic stirrer, charged with the product after the second purification (5.0mmol, 1.0equiv), DMAP (4-dimethylaminopyridine: 61.0mg, 0.5mmol) and THF (40mL), and then Boc was added2O (5.7mL, 25mmol), N-dimethylformamide (8.0mL) and Et3N (0.7mL, 5.0 mmol). After the addition was completed, the resulting mixture was stirred at room temperature for 3 hours, and the reaction was quenched with water (20mL) after completion of the reaction was checked by a glass thin-layer silica gel analysis plate. The mixture was extracted with ethyl acetate (3 × 20 mL). The combined extracts were dried over anhydrous sodium sulfate and concentrated in vacuo. Purifying the crude product by silica gel column chromatography (n-hexane/ethyl acetate, 10: 1) to obtain 1-methyl-6-oxoindolo [1, 2-a ]]Quinoxaline-5 (6H) -carboxylic acid tert-butyl ester is a white solid. (1.74g, 4.5mmol, 91% yield)
1, 3-dimethyl-6-oxobenzo [ k ] phenanthridine-5 (6H) -carboxylic acid tert-butyl ester (1a)
1H NMR(400MHz,CDCl3)δ7.84(d,J=8.0Hz,1H),7.64(s,1H),7.50(d,J=8.4Hz,1H),7.42-7.46(m,1H),7.29-7.33(m,1H),7.24(d,J=8.0Hz,1H),7.19(d,J=7.6Hz,1H),7.12(d,J=8.0Hz,1H),2.46(s,3H),1.67(s,9H).13C NMR(100MHz,CDCl3)δ155.5,150.6,136.5,129.5,128.8,128.8,128.0,128.0,125.1,124.7,123.6,123.0,122.3,115.3,113.3,109.5,86.4,27.8,22.1.HRMs(ESI)Calcd for C21H20N2NaO3 +[M+Na]+371.1366;Found:371.1360.
1-chloro-6-oxoindolo [1, 2-a ] quinoxaline-5 (6H) -carboxylic acid tert-butyl ester (1c)
1H NMR(400MHz,CDCl3)δ7.81(d,J=8.0Hz,1H),7.74-7.76(m,1H),7.68(s,1H),7.42-7.47(m,1H),7.31-7.38(m,2H),7.25-7.26(m,2H),1.67(s,9H).13C NMR(100MHz,CDCl3)δ155.3,150.2,136.0,130.1,129.2,129.0,127.2,125.7,124.6,123.6,122.7,122.7,117.8,114.8,111.0,86.8,27.8.HRMs(EsI)Calcd for C20H17N2ClNaO3 +[M+Na]+391.0820;Found:391.0816.
1-bromo-6-oxoindolo [1, 2-a ] quinoxaline-5 (6H) -carboxylic acid tert-butyl ester (1d)
1H NMR(400MHz,CDCl3)δ7.82(d,J=7.2Hz,1H),7.68(s,1H),7.56(d,J=8.0Hz,1H),7.45(d,J=8.0Hz,1H),7.30-7.36(m,2H),7.19(t,J=8.0Hz,1H),1.67(s,9H).13C NMR(100MHz,CDCl3)δ155.3,150.2,135.4,130.7,130.2,129.3,128.9,126.1,124.3,124.0,122.7,118.3,115.4,111.5,110.9,86.8,27.8.HRMS(ESI)Calcd for C20H17N2BrNaO3 +[M+Na]+435.0315;Found:435.0310.
1, 2-difluoro-6-oxoindolo [1, 2-a ] quinoxaline-5 (6H) -carboxylic acid tert-butyl ester (1e)
1H NMR(400MHz,CDCl3)δ7.94(t,J=8.4Hz,1H),7.82(d,J=8.0Hz,1H),7.72(s,1H),7.49(t,J=7.6Hz,1H),7.36(t,J=8.0Hz,1H),7.10-7.16(m,1H),7.03-7.07(m,1H),1.68(s,9H).13C NMR(100MHz,CDCl3)δ154.7,150.0,148.2(dd,J=12.9,244.3Hz),141.1(dd,J=12.9,244.3Hz),136.0,129.1,127.7,126.2,126.2,124.8,123.2,122.9,116.0,115.7,112.3,112.2,111.3,111.0,87.2,27.7.19F NMR(376MHz,CDCl3)δ-136.52(d,J=25.94Hz,1F),-140.63(d,J=28.20Hz,1F).HRMS(ESI)Calcd for C20H16N2F2NaO3 +[M+Na]+393.1021;Found:393.1018.
1-Ethyl-6-oxoindolo [1, 2-a ] quinoxaline-5 (6H) -carboxylic acid tert-butyl ester (1f)
1H NMR(400MHz,CDCl3)δ7.83(d,J=8.0Hz,1H),7.74-7.76(m,1H),7.62-7.64(m,2H),7.39-7.43(m,2H),7.30-7.36(m,2H),3.95(q,J=7.2Hz,2H),1.69(s,9H),0.68(t,J=7.2Hz,3H).13C NMR(100MHz,CDCl3)δ167.4,155.1,150.3,137.2,128.6,128.5,128.2,126.8,125.6,124.4,123.3,123.2,123.0,118.8,112.8,109.7,87.0,62.0,27.7,13.3.HRMS(ESI)Calcd for C23H22N2NaO5 +[M+Na]+429.1421;Found:429.1417.
8-fluoro-1-methyl-6-oxoindolo [1, 2-a ] quinoxaline-5 (6H) -carboxylic acid tert-butyl ester (1g)
1H NMR(400MHz,CDCl3)δ7.73(s,1H),7.33-7.39(m,1H),7.25-7.29(m,2H),7.19(d,J=7.2Hz,1H),7.12(d,J=8.0Hz,1H),6.97(t,J=8.8Hz,1H),2.44(s,3H),1.68(s,9H).13C NMR(100MHz,CDCl3)δ158.3,155.5(d,J=62.4Hz),150.4,138.3(d,J=9.6Hz),129.6,128.9,128.1,128.1,125.6,125.3(d,J=7.7Hz),123.3,118.7(d,J=23Hz),113.4,111.4(d,J=3.9Hz),106.7(d,J=18.1Hz),105.4,86.6,27.7,22.0.19F NMR(376MHz,CDCl3)δ-119.12.HRMS(ESI)Calcd for C21H19FN2NaO3 +[M+Na]+389.1272;Found:389.1266.
8-chloro-1-methyl-6-oxoindolo [1, 2-a ] quinoxaline-5 (6H) -carboxylic acid tert-butyl ester (1H)
1H NMR(400MHz,CDCl3)δ7.6(s,1H),7.25-7.38(m,4H),7.18(d,J=7.2Hz,1H),7.13(d,J=8.0Hz,1H),2.41(s,3H),1.68(s,9H).13C NMR(100MHz,CDCl3)δ155.2,150.4,136.9,129.9,128.9,128.1,128.1,128.0,127.8,125.7,125.1,123.2,121.9,113.9,113.4,107.9,86.7,27.8,22.0.HRMs(EsI)Calcd for C21H19N2ClNaO3 +[M+Na]+405.0976;Found:405.0967.
8-bromo-1-methyl-6-oxoindolo [1, 2-a ] quinoxaline-5 (6H) -carboxylic acid tert-butyl ester (1i)
1H NMR(400MHz,CDCl3)δ7.71(s,1H),7.48(d,J=7.6Hz,1H),7.43(d,J=8.4Hz,1H),7.25-7.29(m,2H),7.19(d,J=7.2Hz,1H),7.13(d,J=8.0Hz,1H),2.42(s,3H),1.67(s,9H).13C NMR(100MHz,CDCl3)δ155.2,150.4,136.5,129.9,129.6,128.9,128.2,128.0,125.7,125.3,125.2,123.3,116.7,114.4,113.5,109.6,86.7,27.8,22.1.HRMS(ESI)Calcd for C21H19BrN2NaO3 +[M+Na]+449.0471;Found:449.0468.
1-methyl-6-oxobenzo [4, 5] indolo [1, 2-a ] quinoxaline-5 (6H) -carboxylic acid tert-butyl ester (ls)
1H NMR(400MHz,CDCl3)δ8.36(d,J=7.6Hz,1H),8.17(s,1H),7.95(d,J=8.0Hz,1H),7.67(t,J=8.0Hz,1H),7.53-7.59(m,2H),7.30(t,J=8.0Hz,1H),7.16-7.22(m,2H),2.50(s,3H),1.69(s,9H).13C NMR(100MHz,CDCl3)δ155.2,150.7,134.0,129.7,129.2,128.6,128.4,128.2,127.9,127.2,126.0,125.6,125.5,125.2,123.5,123.3,115.7,113.4,108.5,86.5,27.8,22.0.HRMS(ESI)calcd for C25H22N2NaO3 +(M+Na)+:421.1523,Found:421.1530.
1-methyl-6-thieno [2 ', 3': 4, 5] pyrrolo [1, 2-a ] quinoxaline-5 (6H) -carboxylic acid tert-butyl ester (1t)
1H NMR(400MHz,CDCl3)δ7.60(s,1H),7.44(d,J=5.6Hz,1H),7.23(t,J=8.0Hz,1H),7.14-7.19(m,2H),7.40(d,J=8.0Hz,1H),2.63(s,3H),1.68(s,9H).13C NMR(100MHz,CDCl3)δ154.4,150.7,141.1,128.9,128.7,128.3,128.2,127.7,127.2,125.2,123.6,115.2,112.9,107.7,86.5,27.7,21.6.HRMs(EsI)calcd for C19H18N2O3NaS+[M+Na]+:377.0930,Found:377.0929.
1-methyl-6-thieno [3 ', 2': 4, 5] pyrrolo [1, 2-a ] quinoxaline-5 (6H) -carboxylic acid tert-butyl ester (1u)
1H NMR(400MHz,CDCl3)δ7.60(s,1H),7.44(d,J=5.6Hz,1H),7.23(t,J=8.0Hz,1H),7.14-7.19(m,2H),7.40(d,J=8.0Hz,1H),2.63(s,3H),1.68(s,9H).13C NMR(100MHz,CDCl3)δ154.0,150.6,137.6,134.1,130.6,128.1,127.8,127.0,125.5,123.4,123.4,117.4,113.0,107.7,86.6,27.7,22.8.HRMS(ESI)calcd for C19H18N2O3NaS+(M+Na)+:377.0930,Found:377.0930.
1-methyl-6-oxothieno [2 ", 3": 4 ', 5' ] thieno [2 ', 3': 4, 5] pyrrolo [1, 2-a ] quinoxaline-5 (6H) -carboxylic acid tert-butyl ester (1v)
1H NMR(400MHz,CDCl3)δ7.59(s,1H),7.37(d,J=5.2Hz,1H),7.24-7.29(m,2H),7.13-7.19(m,2H),7.40(d,J=8.0Hz,1H),2.67(s,3H),1.67(s,9H).13C NMR(100MHz,CDCl3)δ154.4,150.6,143.5,134.8,131.1,128.9,128.8,127.9,127.4,126.7,126.0,125.3,123.7,120.8,113.5,109.5,86.3,27.8,20.3.HRMS(ESI)calcd for C21H18N2O3NaS2 +(M+Na)+:433.0651,Found:433.0655.
1-methyl-6-furo [2 ', 3': 4, 5] pyrrolo [1, 2-a ] quinoxaline-5 (6H) -carboxylic acid tert-butyl ester (1w)
1H NMR(400MHz,CDCl3)δ7.59(d,J=2.4Hz,1H)7.30(s,1H),7.17-7.21(m,1H),7.10(d,J=7.6Hz,1H),6.81-6.83(m,1H),2.81(s,3H),1.69(s,9H).13C NMR(100MHz,CDCl3)δ154.2,150.7,149.6,147.5,127.8,127.6,126.5,126.4,125.0,123.6,113.3,104.1,96.6,86.6,81.2,28.0,27.7,22.5.HRMs(EsI)calcd for C19H18N2O4Na+[M+Na]+:361.1159,Found:361.1168.
1-methyl-6-benzofuro [2 ', 3': 4, 5] pyrrolo [1, 2-a ] quinoxaline-5 (6H) -carboxylic acid tert-butyl ester (1x)
1H NMR(400MHz,CDCl3)δ7.66(d,J=8.0Hz,1H),7.58(d,J=8.0Hz,1H),7.27-7.38(m,4H),7.21(d,J=7.2Hz,1H),7.12(d,J=8.0Hz,1H),2.71(s,3H),1.68(s,9H).13C NMR(100MHz,CDCl3)δ160.5,154.4,151.5,150.6,128.8,128.3,127.5,127.3,126.0,125.8,125.4,123.4,122.8,120.6,120.0,113.1,112.9,96.8,86.5,77.5,77.1,76.8,27.7,19.5.HRMS(ESI)calcd for C23H20N2NaO4 +[M+Na]+:411.1315,Found:411.1320.
1-methyl-6-oxopyrido [3 ', 2': 4, 5] pyrrolo [1, 2-a ] quinoxaline-5 (6H) -carboxylic acid tert-butyl ester (1y)
1H NMR(400MHz,CDCl3)δ8.52-8.53(m,1H),8.08(dd,J=1.6,8.0Hz,1H),7.52(s,1H),7.13-7.22(m,3H),6.96(dd,J=1.6,7.6Hz,1H),2.60(s,3H),1.60(s,9H).13C NMR(100MHz,CDCl3)δ155.2,150.4,147.4,145.8,131.1,131.0,129.1,128.5,128.4,125.6,122.5,121.2,118.3,112.6,106.9,86.7,27.7,24.2.HRMS(ESI)calcd for C20H19N3NaO3 +(M+Na)+:372.1319,Found:372.1315.
2. Reaction process
Preparation 3a was carried out using the following preparation method:
the substrate azaarylindolinamide 1a (0.1mmol), alcohol 2a (0.12mmol), chiral base (6.3mg, 10 mol%) were added to the dried tube, then 1mL 1, 2 dichloroethane was added as solvent to the mixture, the reaction was stirred at room temperature for 24 hours, after TLC monitoring the reaction was complete, the reaction mixture was purified using silica gel column separation, eluent petroleum ether/dichloromethane 2: 1, the product was a colorless oil.
Benzyl (S) -1- (2- ((tert-butoxycarbonyl) amino) -6-methylphenyl) -1H-indole-2-carboxylate, 94% yield, 97% ee, [ alpha ]]D 23(c1.0,CHCl3)=-39.74.HPLC condition:Chiralpak AZ-H(Hex/iPrOH=80/20,1.0mL/min,tR(major)=6.0min,tR(minor)=7.7min).
1H NMR(400MHz,CDCl3)δ8.09(d,J=8.0Hz,1H),7.78(d,J=8.0Hz,1H),7.61(d,J=0.8Hz,1H),7.29-7.36(m,5H),7.22-7.26(m,3H),6.96(d,J=7.2Hz,1H),6.89(d,J=9.2Hz,1H),6.05(s,1H),5.20(dd,J=12.4,23.2Hz,2H),1.62(m,3H),1.38(s,9H);13C NMR(100MHz,CDCl3)δ159.6,151.5,138.5,136.1,135.4,134.4,128.1,127.8,127.5,127.2,127.1,125.6,125.3,125.2,123.6,121.6,120.8,116.4,111.9,110.4,79.7,65.5,27.1,15.9.;HRMS(ESI)Calcd for C28H28N2NaO4 +[M+Na]+479.1941;Found:479.1937.
Preparation 3b by the following preparation method
The substrate azaarylindolinamide 1a (0.1mmol), alcohol 2b (0.12mmol), chiral base (6.3mg, 10 mol%) were added to the dried tube, then 1mL 1, 2 dichloroethane was added as solvent to the mixture, the reaction was stirred at room temperature for 24 hours, after TLC monitoring the reaction was complete, the reaction mixture was purified using silica gel column separation, eluent petroleum ether/dichloromethane 2: 1, the product was a colorless oil. The product was a colorless oil:
4-methoxybenzyl (S) -1- (2- ((tert-butoxycarbonyl) amino) -6-methylphenyl) -1H-indole-2-carboxylate (3 b): 95% yield, 97% ee, [ alpha ]]D 23(c1.0,CHCl3)=-34.57.
HPLC condition:Chiralpak AZH(Hex/iPrOH=80/20,1.0mL/min,tR(major)=7.2min,tR(minor)=10.5min).
1H NMR(400MHz,CDCl3)δ8.10(d,J=8.0Hz,1H),7.77(d,J=8.0Hz,1H),7.58(s,1H),7.35(t,J=8.0Hz,1H),7.30(t,J=7.2Hz,1H),7.23(t,J=9.2Hz,1H),7.19(d,J=8.8Hz,2H),6.96(d,J=7.6Hz,1H),6.85-6.90(m,3H),6.05(s,1H),5.13(dd,J=12.0,25.6Hz,2H),3.81(s,3H),1.62(s,3H),1.38(s,9H).13C NMR(100MHz,CDCl3)δ160.8,159.7,152.7,139.6,137.3,136.6,130.2,129.3,129.1,127.7,126.7,126.4,124.7,122.7,121.9,117.6,114.0,112.9,111.6,80.8,66.5,55.4,28.3,17.1.HRMS(EsI)Calcd for C29H30N2NaO5 +[M+Na]+ 509.2047;Found:509.2049.
Preparation 3c by the following preparation method
The substrate azaarylindolinamide 1a (0.1mmol), alcohol 2c (0.12mmol), chiral base (6.3mg, 10 mol%) were added to the dried tube, then 1mL 1, 2 dichloroethane was added as solvent to the mixture, the reaction was stirred at room temperature for 24 hours, after TLC monitoring the reaction was complete, the reaction mixture was purified using silica gel column separation, eluent petroleum ether/dichloromethane 2: 1, the product was a colorless oil.
3-methoxybenzyl(s) -1- (2- ((tert-butoxycarbonyl) amino) -6-methylphenyl) -1H-indole-2-carboxylate (3 c): 96% yield, 96% ee, [ alpha ]]D 23(c1.0,CHCl3)=-35.21.
HPLC condition:Chiralpak AZH(Hex/iPrOH=80/20,1.0mL/min,tR(major)=9.8min,tR(minor)=13.1min).
1H NMR(400MHz,CDCl3)δ8.06(d,J=8.0Hz,1H),7.76(d,J=8.0Hz,1H),7.59(s,1H),7.21-7.34(m,5H),6.81-6.95(m,5H),6.03(s,1H),5.16(dd,J=12.0,24.8Hz,2H),3.80(s,3H),1.61(s,3H),1.36(s,9H).13C NMR(100MHz,CDCl3)δ160.7,159.7,152.7,139.6,137.2,137.1,136.5,129.7,129.3,128.8,126.7,126.4,126.4,124.8,122.8,122.0,120.5,117.6,113.9,113.8,113.0,111.6,80.8,66.5,55.4,28.3,17.1.HRMs(EsI)Calcd for C29H30N2NaO5 +[M+Na]+509.2047;Found:509.2044.
Preparation 3d by the following preparation method
The substrate azaarylindolelactam 1a (0.1mmol), alcohol 2d (0.12mmol), chiral base (6.3mg, 10 mol%) were added to the dried tube, then 1mL 1, 2 dichloroethane was added as solvent to the mixture, the reaction was stirred at room temperature for 24 hours, after TLC monitoring the reaction was complete, the reaction mixture was purified using silica gel column separation, eluent petroleum ether/dichloromethane 2: 1, the product was a colorless oil.
2-methoxybenzyl(s) -1- (2- ((tert-butoxycarbonyl) amino) -6-methylphenyl) -1H-indole-2-carboxylate (3 d): 98% yield, 96% ee, [ alpha ]]D 23(c1.0,CHCl3)=-30.87.
HPLC condition:Chiralpak AZH(Hex/iPrOH=90/10,1.0mL/min,tR(major)=8.9min,tR(minor)=11.8min).
1H NMR(400MHz,CDCl3)δ8.05(d,J=10.0Hz,1H),7.78(d,J=8.0Hz,1H),7.61(s,1H),7.27-7.32(m,3H),7.22-7.26(m,1H),7.14-7.17(m,1H),6.85-6.93(m,4H),6.07(s,1H),5.27(dd,J=12.8,19.2Hz 2H),3.80(s,3H),1.64(s,3H),1.38(s,9H).13C NMR(100MHz,CDCl3)δ160.9,157.5,152.7,139.6,137.2,136.5,129.6,129.6,129.2,126.7,126.3,124.7,123.9,122.7,121.9,120.5,117.5,112.8,111.6,110.4,80.8,62.2,55.4,28.3,17.1.HRMS(ESI)Calcd for C29H30N2NaO5 +[M+Na]+ 495.1890;Found:495.1890.
Preparation 3e by the following preparation method
The substrate azaarylindolelactam 1a (0.1mmol), alcohol 2e (0.12mmol), chiral base (6.3mg, 10 mol%) were added to the dried tube, then 1mL 1, 2 dichloroethane was added as solvent to the mixture, the reaction was stirred at room temperature for 24 hours, after TLC monitoring the reaction was complete, the reaction mixture was purified using silica gel column separation, eluent petroleum ether/dichloromethane 2: 1, the product was a colorless oil.
4-nitrobenzyl (S) -1- (2- ((tert-butoxycarbonyl) amino) -6-methylphenyl) -1H-indole-2-carboxylate (3 e): 94% yield, 97% ee, [ alpha ]]D 23(c1.0,CHCl3)=-33.33.
HPLC condition:Chiralpak AZH(Hex/iPrOH=80/20,1.0mL/min,tR(major)=14.8min,tR(minor)=16.7min).
1H NMR(400MHz,CDCl3)δ8.18(d,J=8.0Hz,2H),8.08(d,J=8.0Hz,1H),7.80(d,J=8.4Hz,1H),7.67(s,1H),7.31-7.38(m,4H),7.24-7.28(m,1H),6.98(d,J=7.2Hz,1H),6.90(d,J=8.4Hz,1H),6.02(s,1H),5.28(dd,J=9.6,23.2Hz,2H),1.64(s,3H),1.37(s,9H).13C NMR(100MHz,CDCl3)δ160.4,152.6,147.7,142.8,139.7,137.3,136.6,129.4,128.4,128.3,126.8,126.7,126.4,124.9,123.9,122.9,122.2,117.8,113.7,111.6,81.0,65.1,28.3,17.1.HRMS(ESI)Calcd for C28H27N3NaO6 +[M+Na]+524.1492;Found:524.1497.
Preparation 3f by the following preparation method
The substrate azaarylindolelactam 1a (0.1mmol), alcohol 2f (0.12mmol), chiral base (6.3mg, 10 mol%) were added to the dried tube, then 1mL 1, 2 dichloroethane was added as solvent to the mixture, the reaction was stirred at room temperature for 24 hours, after TLC monitoring the reaction was complete, the reaction mixture was purified using silica gel column separation, eluent petroleum ether/dichloromethane 2: 1, the product was a colorless oil.
4-chlorobenzyl (S) -1- (2- ((tert-butoxycarbonyl) amino) -6-methylphenyl) -1H-indole-2-carboxylate (3 f): 90% yield, 98% ee, [ alpha ]]D 23(c 1.0,CHCl3)=-41.30.
HPLC condition:Chiralpak AS-H(Hex/iPrOH=90/10,1.0mL/min,tR(major)=8.7min,tR(minor)=10.3min).
1H NMR(400MHz,CDCl3)δ8.08(d,J=8.0Hz,1H),7.77(d,J=8.0Hz,1H),7.60(s,1H),7.34(t,J=8.0Hz,1H),7.22-7.30(m,4H),7.13(d,J=8.4Hz,2H),6.95(d,J=7.8Hz,1H),6.88(d,J=8.0Hz,1H),6.02(s,1H),5.14(dd,J=12.4,22.8Hz 2H),1.61(s,3H),1.37(s,9H).13C NMR(100MHz,CDCl3)δ160.6,152.6,139.6,137.2,136.6,134.2,134.0,129.7,129.3,128.8,128.7,126.7,126.6,126.3,124.8,122.8,122.0,117.6,113.2,111.6,80.9,65.8,28.3,17.1.HRMS(ESI)Calcd for C28H27ClN2NaO4 +[M+Na]+513.1552;Found:513.1557.
Preparation of 3g was carried out by the following preparation method
The substrate azaarylindolelactam 1a (0.1mmol), alcohol 2g (0.12mmol), chiral base (6.3mg, 10 mol%) were added to the dried tube, then 1mL 1, 2 dichloroethane was added as solvent to the mixture, the reaction was stirred at room temperature for 24 hours, after TLC monitoring the reaction was complete, the reaction mixture was purified using silica gel column separation, eluent petroleum ether/dichloromethane 2: 1, the product was a colorless oil.
3-methylbenzyl (S) -1- (2- ((tert-butoxycarbonyl) amino) -6-methylphenyl) -1H-indole-2-carboxylate (3 g): 94% yield, 94% ee, [ alpha ]]D 23(c 1.0,CHCl3)=-37.30.
HPLC condition:Chiralpak IA(Hex/iPrOH=90/10,1.0mL/min,tR(major)=5.4min,tR(minor)=5.8min).
1H NMR(400MHz,CDCl3)δ8.07(d,J=8.4Hz,1H),7.77(d,J=7.6Hz,1H),7.60(s,1H),7.28-7.35(m,2H),7.20-7.26(m,2H),7.13(d,J=7.6Hz,1H),7.04(d,J=6.4Hz,2H),6.95(d,J=7.2Hz,1H),6.89(dd,J=0.8,8.4Hz,1H),6.04(s,1H),5.16(dd,J=12.4,28.0Hz,2H),2.35(s,3H),1.62(s,3H),1.37(s,9H).13C NMR(100MHz,CDCl3)δ160.8,152.7,139.6,138.3,137.2,136.6,135.4,129.2,129.1,129.0,128.5,126.7,126.4,125.4,124.7,122.7,121.9,117.6,113.0,111.6,80.8,66.7028.3,21.5,17.1.HRMS(ESI)Calcd for C29H30N2NaO4 +[M+Na]+493.2098;Found:493.2092.
The following preparation method is adopted for preparation for 3h
The substrate azaarylindolelactam 1a (0.1mmol), alcohol 2h (0.12mmol), chiral base (6.3mg, 10 mol%) were added to the dried tube, then 1mL 1, 2 dichloroethane was added as solvent to the mixture, the reaction was stirred at room temperature for 24 hours, after TLC monitoring the reaction was complete, the reaction mixture was purified using silica gel column separation, eluent petroleum ether/dichloromethane 2: 1, the product was a colorless oil.
2-iodobenzyl (S) -1- (2- ((tert-butoxycarbonyl) amino) -6-methylphenyl) -1H-indole-2-carboxylate (3H): 93% yield, 96% ee, [ alpha ]]D 23(c 1.0,CHCl3)=-29.9.
HPLC condition:Chiralpak AZH(Hex/iPrOH=90/10,1.0mL/min,tR(major)=8.3min,tR(minor)=11.3min).
1H NMR(400MHz,CDCl3)δ8.06(d,J=8.0Hz,1H),7.79-7.85(m,2H),7.67(s,1H),7.28-7.34(m,3H),7.23-7.27(m,1H),7.20-7.22(m,1H),6.95(d,J=12.4Hz,1H),6.91(d,J=8.4Hz,1H),6.07(s,1H),5.23(q,J=13.2,20.8Hz 2H),1.67(s,3H),1.39(s,9H).13C NMR(100MHz,CDCl3)δ160.5,152.6,139.7,139.5,138.0,137.2,136.6,130.0,129.5,129.3,128.6,128.5,126.7,126.6,126.2,124.8,122.8,122.0,117.5,113.3,111.6,98.4,80.9,70.4,28.3,17.2,1.2.HRMS(ESI)Calcd for C28H27IN2NaO4 +[M+Na]+605.0908;Found:605.0910.
Preparation of 3an by the following preparation method
The substrate azaarylindolelactam 1a (0.1mmol), alcohol 2an (0.12mmol), chiral base (6.3mg, 10 mol%) were added to the dried tube, then 1mL 1, 2 dichloroethane was added as solvent to the mixture, the reaction was stirred at room temperature for 24 hours, after TLC monitoring the reaction was complete, the reaction mixture was purified using silica gel column separation, eluent petroleum ether/dichloromethane 2: 1, the product was a colorless oil.
2- (4- (3- (8- (trifluoromethyl) -4a, 10 a-dihydro-10H-phenothiazin-10-yl) propyl) piperazin-1-yl) ethyl 1- (2- ((tert-butoxycarbonyl) amino)) -6-methylphenyl) -1H-indole-2-carboxylate (3 an): 92% yield, 87% ee, [ alpha ]]D 23(c 1,CHCl3)=-24.23.
HPLC condition:Chiralpak IA(Hex/iPrOH=90/10,1.0mL/min,tR(major)=9.0min,tR(minor)=12.5min).
1H NMR(400MHz,CDCl3)δ8.00(d,J=7.2Hz,1H),7.76(d,J=8Hz,1H),7.53(s,1H),7.27-7.32(m,2H),7.19-7.25(m,3H),7.12-7.17(m,2H),7.03(s,1H),6.86-6.98(m,4H),6.15(s,1H),4.25(t,J=5.2Hz,2H),3.99(t,J=6.4Hz,2H),2.53-2.72(m,11H),2.09-2.12(m,2H),1.90(s,1H),1.63(s,3H),1.33(s,9H).13C NMR(100MHz,CDCl3)δ175.1,160.8,152.8,145.7,144.0,139.5,137.3,136.6,130.5,130.0,129.7,129.2,128.8,128.0,127.9,127.8,127.0,126.7,126.5,125.5,124.9,124.6,123.6,122.8,122.0,119.5,118.1,116.3,112.9,112.2,111.6,80.9,61.3,56.1,55.0,52.2,51.4,45.1,28.3,22.7,21.8,17.2.19F NMR(376MHz,CDCl3)δ-119.67.HRMS(ESI)calcd for C43H48F3N5NaO4S+(M+Na)+:810.3271,Found:810.3720.
Preparation of 3ao Using the following preparation method
The substrate azaarylindolinamide 1a (0.1mmol), alcohol 2ao (0.12mmol), chiral base (6.3mg, 10 mol%) were added to the dried tube, then 1mL 1, 2 dichloroethane was added as solvent to the mixture, the reaction was stirred at room temperature for 24 hours, after completion of the reaction monitored by TLC, the reaction mixture was purified by silica gel column separation, eluent petroleum ether/dichloromethane 2: 1, and the product was colorless oil.
(s) -2- ((2 '- (benzyloxy) - [1, 1' -binaphthyl)]-2-yl) oxy) ethyl 1- (2- ((tert-butoxycarbonyl) amino) -6-methylphenyl) -1H-2-carboxylic acid indole (3 ao): 95% yield, 96% ee, [ alpha ]]D 23(c 1,CHCl3)=-35.50.
HPLC condition:Chiralpak IA(Hex/iPrOH=90/10,1.0mL/min,tR(major)=11.1min,tR(minor)=13.1min).
1H NMR(400MHz,CDCl3)δ 8.11(d,J=7.6Hz,1H),8.01(d,J=8.8Hz,1H),7.83-7.93(m,3H),7.74(d,J=7.6Hz,1H),7.44(dd,J=8.8,12.4Hz,2H),7.20-7.39(m,9H),7.14-7.16(m,3H),7.02(s,1H),6.98-7.00(m,2H),6.89-6.93(m,2H),6.06(s,1H),5.07(dd,J=12.4,7.6Hz,2H),4.06-4.19(m,4H)),1.51(s,3H),1.39(s,9H).13C NMR(100MHz,CDCl3)δ160.5,154.1,152.7,139.5,137.6,137.3,136.4,134.2,129.9,129.6,129.4,129.2,128.3,128.1,128.0,127.5,126.9,126.6,126.5,126.5,126.3,125.8,125.5,124.8,124.1,123.9,122.9,121.9,121.4,120.5,117.6,116.5,115.9,112.9,111.5,80.9,71.2,67.8,63.4,28.3,17.0.HRMS(ESI)calcd for C50H44N2NaO6 +[M+Na]+:791.3092,Found:791.3099.
Preparation of 3ap Using the following preparation method
The substrate azaarylindolelactam 1a (0.1mmol), alcohol 2ap (0.12mmol), chiral base (6.3mg, 10 mol%) were added to the dried tube, then 1mL 1, 2 dichloroethane was added as solvent to the mixture, the reaction was stirred at room temperature for 24 hours, after completion of the reaction monitored by TLC, the reaction mixture was purified by silica gel column separation, eluent petroleum ether/dichloromethane 2: 1, the product was colorless oil.
(R) - (1- (tert-Butoxycarbonyl) pyrrolidin-2-yl) methyl 1- (2- ((tert-butoxy) carbanion
Carbonyl (amino) -6-methylphenyl) -1H-indole-2-carboxylate (3 ap): 90% yield, 94% ee, [ alpha ]]D 23(c 1,CHCl3)=+33.8.
HPLC condition:Chiralpak IA(Hex/iPrOH=90/10,1.0mL/min,tR(major)=7.7min,tR(minor)=7.2min).
1H NMR(400MHz,CDCl3)δ8.10(d,J=8.0Hz,1H),7.77(d,J=7.2Hz,1H),7.56(d,J=6.4Hz,1H),7.28-7.36(m,2H),7.16-7.24(m,1H),6.97(d,J=8.0Hz,1H),6.88(d,J=8.0Hz,1H),6.02-6.12(m,1H),3.75-4.30(m,3H),3.29-3.35(m,2H),1.78-1.83(m,3H),1.64(s,3H),1.58-1.61(m,1H),1.43(s,9H),1.36(s,9H).13C NMR(100MHz,CDCl3)δ160.7,154.5,152.6,139.6,137.2,136.6,129.3,128.8,126.7,126.3,124.8,122.8,122.0,118.0,117.7,113.1,112.8,111.6,80.8,79.9,79.5,65.0,55.6,46.8,46.5,28.6,28.3,23.8,23.0,17.1.HRMS(ESI)calcd for C31H39N3NaO6 +[M+Na]+:572.2731,Found:572.2733.
Preparation of 3as by the following preparation method
The substrate azaarylindolelactam 1f (0.1mmol), alcohol 2ad (0.12mmol), chiral base (6.3mg, 10 mol%) were added to the dried tube, then 1mL 1, 2 dichloroethane was added as solvent to the mixture, the reaction was stirred at room temperature for 24 hours, after TLC monitoring the reaction was complete, the reaction mixture was purified using silica gel column separation, eluent petroleum ether/dichloromethane 2: 1, the product was a colorless oil.
Cyclopentyl 1- (2- ((tert-butoxycarbonyl) amino) -6- (ethoxycarbonyl) phenyl) -1H-indole-2-carboxylate (3 av): 96% yield, 99% ee, [ alpha ]]D 23(c1.0,CHCl3)=-18.80.
HPLC condition:Chiralpak IA(Hex/iPrOH=95/5,1.0mL/min,tR(major)=6.1min,tR(minor)=6.8min).
1H NMR(400MHz,CDCl3)δ8.51(d,J=8.4Hz,1H),7.75(d,J=7.6Hz,1H),7.68-7.70(m,1H),7.57(s,1H),7.54(t,,J=8.4Hz,1H),7.19-7.28(m,2H),6.81(d,J=8.4Hz,1H),6.18(s,1H),5.22-5.26(m,1H),3.76-3.86(m,2H),1.69-1.80(m,2H),1.43-1.57(m,6H),1.38(s,9H),0.76(t,,J=7.2Hz,3H);13C NMR(100MHz,CDCl3)δ165.5,160.8,152.5,140.2,137.7,131.1,130.9,129.3,126.9,126.7,126.1,125.0,123.3,122.6,121.8,112.6,111.2,81.4,78.0,61.3,32.7,32.6,28.2,23.7,13.5;HRMs(ESI)Calcd for C28H32N2NaO6 +[M+Na]+515.2153;Found:515.2150.
Preparation of 3at was carried out by the following preparation method
The substrate azaarylindolelactam 1c (0.1mmol), alcohol 2ad (0.12mmol), chiral base (6.3mg, 10 mol%) were added to the dried tube, then 1mL 1, 2 dichloroethane was added as solvent to the mixture, the reaction was stirred at room temperature for 24 hours, after TLC monitoring the reaction was complete, the reaction mixture was purified using silica gel column separation, eluent petroleum ether/dichloromethane 2: 1, the product was a colorless oil.
1- (2- ((tert-butyl)Butoxycarbonyl) amino) -6-chlorophenyl) -1H-indole-2-carboxylic acid cyclopentyl ester (3 as): 94% yield, > 99% ee, [ alpha ]]D 23(c 1.0,CHCl3)=-40.4.
HPLC condition:Chiralpak IA(Hex/iPrOH=90/10,1.0mL/min,tR(major)=4,5min,tR(minor)=5.2min).
1H NMR(400MHz,CDCl3)δ8.27(d,J=8.4Hz,1H),7.90(d,J=8.0Hz,1H),7.60(s,1H),7.40(t,J=8.4Hz,1H),7.30-7.35(m,1H),7.24-7.28(m,1H),7.16-7.19(m,1H),6.89(d,J=7.6Hz,1H),6.24(s,1H),5.25-5.30(m,1H),1.48-1.59(m,1H),1.40(s,9H);13C NMR(100MHz,CDCl3)δ160.6,152.3,139.4,138.4,134.1,130.3,130.0,127.0,126.4,125.4,123.5,122.8,122.2,117.8,113.3,111.3,81.5,78.1,77.5,77.1,76.8,32.7,32.7,28.2,23.7,23.7;HRMS(ESI)Calcd for C25H27ClNNaO4 +[M+Na]+447.1552;Found:447.1550.
Preparation of 3au Using the following preparation method
The substrate azaarylindolelactam 1d (0.1mmol), alcohol 2ad (0.12mmol), chiral base (6.3mg, 10 mol%) were added to the dried tube, then 1mL 1, 2 dichloroethane was added as solvent to the mixture, the reaction was stirred at room temperature for 24 hours, after TLC monitoring the reaction was complete, the reaction mixture was purified using silica gel column separation, eluent petroleum ether/dichloromethane 2: 1, the product was a colorless oil.
1- (2-bromo-6- ((tert-butoxycarbonyl) amino) phenyl) -1H-indole-2-carboxylic acid cyclopentyl ester (3 au): 90% yield, 99% ee, [ alpha ]]D 23(c1.0,CHCl3)=-42.70.
HPLC condition:Chiralpak IA(Hex/iPrOH=95/5,1.0mL/min,tR(major)=5.6min,tR(minor)=7.6min).
1H NMR(400MHz,CDCl3)δ8.31(d,J=9.6Hz,1H),7.79(d,J=8.4Hz,1H),7.60(s,1H),7.31-7.36(m,3H),7.24-7.28(m,1H),6.88(d,J=8.0Hz,1H),6.22(s,1H),5.26-5.29(m,1H),1.70-1.81(m,2H),1.48-1.59(m,6H),1.40(s,9H);13C NMR(100MHz,CDCl3)δ160.6,152.3,139.2138.6,130.5,130.1,127.0,126.8,126.7,126.4,124.0,122.8,122.2,118.4,113.3,111.3,81.5,78.1,32.7,32.7,28.2,23.7;HRMS(ESI)Calcd for C25H27BrN2NaO4 +[M+Na]+521.1046;Found:521.1040.
Preparation of 3av by the following preparation method
The substrate azaarylindolelactam 1d (0.1mmol), alcohol 2ad (0.12mmol), chiral base (6.3mg, 10 mol%) were added to the dried tube, then 1mL 1, 2 dichloroethane was added as solvent to the mixture, the reaction was stirred at room temperature for 24 hours, after TLC monitoring the reaction was complete, the reaction mixture was purified using silica gel column separation, eluent petroleum ether/dichloromethane 2: 1, the product was a colorless oil.
Benzyl 1- (6- ((tert-butoxycarbonyl) amino) -2, 3-difluorophenyl) -1H-indole-2-carboxylate (3 av): 86% yield, 94% ee, [ alpha ]]D 23(c 1.0,CHCl3)=-16.7.
HPLC condition:Chiralpak IA(Hex/iPrOH=95/5,1.0mL/min,tR(major)=7.2min,tR(minor)=9.2min).
1H NMR(400MHz,CDCl3)δ7.96(s,1H),7.78(d,J=7.6Hz,1H),7.64(s,1H),7.34-7.38(m,4H),7.28-7.32(m,3H),7.20-7.24(m,3H),6.97(d,,J=8.4Hz,1H),6.11(s,1H),5.24(dd,J=12.4,25.2Hz,2H),1.39(s,9H).13C NMR(100MHz,CDCl3)δ160.6,152.5,148.0(dd,d,J=13.4,106.5Hz),145.5(dd,d,J=13.8,102.5Hz),139.9,135.3,133.4,129.2,128.7,128.5,128.4,127.0,126.9,123.0,122.5,117.5,117.3,114.9,114.1,111.1,81.5,77.5,77.2,76.8,66.9,28.2.19F NMR(376MHz,CDCl3)δ-142.9,-144.0.HRMS(ESI)Calcd for C27H24F2N2NaO4 +[M+Na]+501.1596;Found:501.1590.
Preparation of 3ax Using the following preparation method
The substrate azaarylindolinamide 1i (0.1mmol), alcohol 2ad (0.12mmol), chiral base (6.3mg, 10 mol%) were added to the dried tube, then 1mL 1, 2 dichloroethane was added as solvent to the mixture, the reaction was stirred at room temperature for 24 hours, after TLC monitoring the reaction was complete, the reaction mixture was purified using silica gel column separation, eluent petroleum ether/dichloromethane 2: 1, the product was a colorless oil.
Cyclopentyl 1- (2- ((tert-butoxycarbonyl) amino) -6-methylphenyl) -4-bromo-1H-indole-2-carboxylate (3 ax): 94% yield, 99% ee, [ alpha ]]D 23(c 1.0,CHCl3)=-20.4.
HPLC condition:Chiralpak IA(Hex/iPrOH=95/5,0.5mL/min,tR(major)=9.3min,tR(minor)=9.7min).
1H NMR(400MHz,CDCl3)δ8.11(d,J=8.4Hz,1H),7.59(S,1H),7.34-7.42(m,2H),7.26(m,1H),7.14(d,J=8.0Hz,1H),6.98(d,J=7.2Hz,1H),6.82(d,J=8.4Hz,1H),6.01(s,1H),5.23-5.29(m,1H),1.69-1.81(m,2H),1.65(s,3H),1.44-1.61(m,6H),1.39(s,9H);13C NMR(100MHz,CDCl3)δ160.4,152.6,139.4,137.1,136.4,130.5,129.5,127.7,127.0,126.5,124.8,124.7,117.6,116.5,112.5,110.7,81.1,78.3,32.7,32.6,28.3,23.7,23.6,17.1.HRMS(ESI)Calcd for C34H31NNaO5S+[M+Na]+535.1203;Found:535.1200.
Preparation of 3bi by the following preparation method
The substrate azaaryllactam 1s (0.1mmol), benzyl alcohol 2a (0.12mmol), chiral base (6.3mg, 10 mol%) were added to the dried tube, then 1mL 1, 2 dichloroethane was added as solvent to the mixture, the reaction was stirred at room temperature for 24 hours, after TLC monitoring the reaction was complete, the reaction mixture was purified using silica gel column separation, eluent petroleum ether/dichloromethane 2: 1, the product was a colorless oil.
Benzyl 1- (2- ((tert-butoxycarbonyl) amino) -6-methylphenyl) -1H-benzofuran [3, 2-b]Pyrrole-2-carboxylate (3 bi): 85%, 95% ee, [ alpha ]]D 23(c 1,CHCl3)=+12.15.
HPLC condition:Chiralpak IA(Hex/iPrOH=90/10,1.0mL/min,tR(major)=5.6min,tR(minor)=6.4min).
1H NMR(400MHz,CDCl3)δ 8.08(d,J=7.6Hz,1H),7.54(d,J=8.4Hz,1H),7.28-7.40(m,6H),7.23-7.24(m,2H),7.11(t,J=7.6Hz,1H),7.01(d,J=7.6Hz,1H),6.92(d,J=8Hz,1H),6.13(s,1H),5.15-5.23(dd,J=12.4,22Hz,2H),1.83(s,3H),1.34(s,9H);13C NMR(100MHz,CDCl3)δ160.8,160.4,152.6,148.1,136.3,135.7,135.6,129.4,128.6,128.3,128.3,128.1,125.6,125.2,124.9,123.2,118.2,117.9,112.7,101.1,81.0,66.3,28.2,17.4;HRMS(ESI)calcd for C30H28N2NaO5 +(M+Na)+:519.1890,Found:519.1887.
Preparation of 3ay by the following preparation method
To a dry tube was added the substrate azaaryllactam 1t (0.1mmol), alcohol 2a (0.12mmol), chiral base (6.3mg, 10 mol%), then 1mL 1, 2 dichloroethane was added as solvent to the mixture, the reaction was stirred at room temperature for 24 hours, after TLC monitoring the reaction was complete, the reaction mixture was purified using silica gel column separation, eluent petroleum ether/dichloromethane 2: 1, the product was a colorless oil.
Benzyl 4- (2- ((tert-butoxycarbonyl) amino) -6-methylphenyl) -4H-thieno [3, 2-b]Pyrrole-5-carboxylate (3 bl): 91%, 99% ee, [ alpha ]]D 23(c 1,CHCl3)=-2.60.
HPLC condition:Chiralpak IA(Hex/iPrOH=90/10,1.0mL/min,tR(major)=6.2min,tR(minor)=6.9min).
1H NMR(400MHz,CDCl3)δ8.02(d,J=8Hz,1H),7.51(s,1H),7.29-7.35(m,5H),7.20-7.23(m,2H),6.94(d,J=7.2Hz,1H),6.56(d,J=5.6Hz,1H),6.08(s,1H),5.17(dd,J=12.4,22.4Hz,2H),1.73(s,3H),1.40(s,9H);13C NMR(100MHz,CDCl3)δ160.4,152.7,145.3,136.7,135.8,135.8,130.6,129.2,128.6,128.3,128.2,127.7,124.7,123.8,117.8,111.7,111.2,80.9,66.3,28.3,17.2;HRMS(ESI)calcd for C26H26N2NaO4S+(M+Na)+:377.0930,Found:377.0929.
Preparation of 3bm by the following preparation method
The substrate azaaryllactam 1u (0.1mmol), alcohol 2a (0.12mmol), chiral base (6.3mg, 10 mol%) were added to the dried tube, then 1mL 1, 2 dichloroethane was added as solvent to the mixture, the reaction was stirred at room temperature for 24 hours, after TLC monitoring the reaction was complete, the reaction mixture was purified using silica gel column separation, eluent petroleum ether/dichloromethane 2: 1, the product was a colorless oil.
Benzyl 6- (2- ((tert-butoxycarbonyl) amino) -6-methylphenyl) -6H-thieno [2, 3-b]Pyrrole-5-carboxylate (3 bm): 82%, 96% ee, [ alpha ]]D 23(c 1,CHCl3)=+10.17.
HPLC condition:Chiralpak AZH(Hex/iPrOH=90/10,1.0mL/min,tR(major)=9.3min,tR(minor)=11.8min).
1H NMR(400MHz,CDCl3)δ8.04(d,J=7.6Hz,1H),7.48(s,1H),7.30-7.34(m,4H),7.20-7.23(m,2H),7.09(d,J=5.6Hz,1H),6.94-6.98(m,2H),6.09(s,1H),5.16(dd,J=12.4,23.2Hz,2H),1.78(s,3H),1.41(s,9H);13CNMR(100MHz,CDCl3)δ160.1,152.6,143.6,136.4,135.8,135.6,130.0,129.6,128.8,128.6,128.3,128.2,127.9,124.9,121.8,118.4,117.8,111.7,81.0,66.2,28.3,17.2;HRMS(ESI)calcd for C26H26N2NaO4S+(M+Na)+:377.0930,Found:377.0938.
Preparation of 3bm by the following preparation method
The substrate azaaryllactam 1v (0.1mmol), alcohol 2a (0.12mmol), chiral base (6.3mg, 10 mol%) were added to the dried tube, then 1mL 1, 2 dichloroethane was added as solvent to the mixture, the reaction was stirred at room temperature for 24 hours, after TLC monitoring the reaction was complete, the reaction mixture was purified using silica gel column separation, eluent petroleum ether/dichloromethane 2: 1, the product was a colorless oil.
Benzyl 7- (2- ((tert-butoxycarbonyl) amino) -6-methylphenyl) -7H-thieno [ 2',3′:4,5]Thieno [3, 2-b]Pyrrole-6-carboxylate (3 bm): 95%, 99% ee, [ alpha ]]D 23(c 0.278,CHCl3)=-36.77.
HPLC condition:Chiralpak AZH(Hex/iPrOH=90/10,1.0mL/min,tR(major)=10.3min,tR(minor)=12.5min).
1H NMR(400MHz,CDCl3)δ8.10(d,J=7.6Hz,1H),7.54(s,1H),7.38(t,J=8Hz,1H),7.30-7.35(m,3H),7.20-7.26(m,4H),6.99(d,J=7.6Hz,1H),6.10(s,1H),5.18(t,J=12.4Hz,2H),1.76(s,3H),1.36(s,9H);13C NMR(100MHz,CDCl3)δ160.1,152.5,143.5,136.7,136.7,136.0,135.8,129.7,128.6,128.3,128.2,127.4,126.9,126.1,125.9,124.8,122.7,121.0,117.9,113.3,81.0,77.5,77.2,76.9,66.3,28.3,17.4;HRMS(ESI)calcd for C28H26N2NaO4S2 +(M+Na)+:541.1226,Found:541.1229.
Preparation of 3bo by the following preparation method
To a dry tube was added the substrate azaaryllactam 1w (0.1mmol), alcohol 2a (0.12mmol), chiral base (6.3mg, 10 mol%), then 1mL 1, 2 dichloroethane was added as solvent to the mixture, the reaction was stirred at room temperature for 24 hours, after TLC monitoring the reaction was complete, the reaction mixture was purified using silica gel column separation, eluent petroleum ether/dichloromethane 2: 1, the product was a colorless oil.
Benzyl 4- (2- ((tert-butoxycarbonyl) amino) -6-methylphenyl) -4H-furan [3, 2-b]Pyrrole-5-carboxylate (3 bo): 78%, 95% ee, [ alpha ]]D 23(c 1,CHCl3)=+8.43.
HPLC condition:Chiralpak IA(Hex/iPrOH=90/10,1.0mL/min,tR(major)=5.5min,tR(minor)=6.4min).
1H NMR(400MHz,CDCl3)δ7.99(d,J=8.0Hz,1H)7.55(d,J=2.0Hz,1H),7.27-7.34(m,4H),7.19-7.22(m,2H),7.16(s,1H),6.93(d,J=7.6Hz,1H),6.21(d,J=2.0Hz,1H),6.09(s,1H),5.14(dd,J=12.4,21.6Hz,2H),1.78(s,3H),1.42(s,9H);13C NMR(100MHz,CDCl3)δ160.7,152.7,149.5,146.7,136.6,135.9,135.8,133.3,129.1,128.6,128.2,128.2,127.6,125.0,124.7,117.7,101.1,99.0,80.9,77.5,77.2,76.8,66.1,28.3,17.2;
HRMS(ESI)calcd for C26H26N2NaO5 +[M+Na]+:469.1734,Found:469.1735.
Preparation of 3bp was carried out by the following preparation method
The substrate azaaryllactam 1x (0.1mmol), alcohol 2a (0.12mmol), chiral base (6.3mg, 10 mol%) were added to the dried tube, then 1mL 1, 2 dichloroethane was added as solvent to the mixture, the reaction was stirred at room temperature for 24 hours, after TLC monitoring the reaction was complete, the reaction mixture was purified using silica gel column separation, eluent petroleum ether/dichloromethane 2: 1, the product was a colorless oil.
Benzyl 1- (2- ((tert-butoxycarbonyl) amino) -6-methylphenyl) -1H-benzofuran [3, 2-b]Pyrrole-2-carboxylate (3 bp): 85%, 95% ee, [ alpha ]]D 23(c 1,CHCl3)=+12.15.
HPLC conditioin:Chiralpak IA(Hex/iPrOH=90/10,1.0mL/min,tR(major)=5.6min,tR(minor)=6.4min).
1H NMR(400MHz,CDCl3)δ8.08(d,J=7.6Hz,1H),7.54(d,J=8.4Hz,1H),7.28-7.40(m,6H),7.23-7.24(m,2H),7.11(t,J=7.6Hz,1H),7.01(d,J=7.6Hz,1H),6.92(d,J=8Hz,1H),6.13(s,1H),5.15-5.23(dd,J=12.4,22Hz,2H),1.83(s,3H),1.34(s,9H);13C NMR(100MHz,CDCl3)δ160.8,160.4,152.6,148.1,136.3,135.7,135.6,129.4,128.6,128.3,128.3,128.1,125.6,125.2,124.9,123.2,118.2,117.9,112.7,101.1,81.0,66.3,28.2,17.4;HRMS(ESI)calcd for C30H28N2NaO5 +(M+Na)+:519.1890,Found:519.1887.
Preparation of 3bq by the following preparation method
The substrate azaaryllactam 1y (0.1mmol), alcohol 2a (0.12mmol), chiral base (6.3mg, 10 mol%) were added to the dried tube, then 1mL 1, 2 dichloroethane was added as solvent to the mixture, the reaction was stirred at room temperature for 24 hours, after TLC monitoring the reaction was complete, the reaction mixture was purified using silica gel column separation, eluent petroleum ether/dichloromethane 2: 1, the product was a colorless oil.
Benzyl 1- (2- ((tert-butoxycarbonyl) amino) -6-methylphenyl) -1H-pyrrolo [2, 3-b]Pyridine-2-carboxylate (3 bq): 90%, 93% ee, [ alpha ]]D 23(c 1,CHCl3)=-0.53.
HPLC condition:Chiralpak IA(Hex/iPrOH=90/10,1.0mL/min,tR(mnajor)=7.3min,tR(minor)=7.8min).
1H NMR(400MHz,CDCl3)δ=8.45-8.48(m,1H),8.04-8.12(m,2H),7.55-7.56(m,1H),7.31-7.36(m,4H),7.19-7.24(m,3H),6.95-6.98(m,1H),6.98-6.60(m,1H),5.12-5.28(m,2H),1.64(d,J=6.4Hz,3H),1.36(d,J=6.4Hz,9H);13C NMR(100MHz,CDCl3)δ160.4,152.6,149.8,148.4,137.0,136.5,135.3,131.4,129.5,129.2,128.6,128.4,128.4,125.8,124.9,119.1,118.3,111.0,80.7,80.7,66.9,28.3,17.5;HRMS(ESI)calcd for C27H27N3NaO4 +(M+Na)+:480.1894,Found:480.1897.
Claims (9)
2. The nitrogen aryl indolium lactam compound of claim 1, wherein:
when R is1Is methyl, halogen atom, phenyl, carbethoxy,When R is2And R3Are both hydrogen, Ar is phenyl;
when R is2Is a halogen atom, R1Is methyl, R3Is hydrogen, Ar is phenyl;
when R is3Is a halogen atom, a methyl or methoxy group, R1Is methyl, R2Is hydrogen, Ar is phenyl;
4. the application of an axial chiral compound containing C-N axial chiral amino acid ester is characterized in that: use of a nitrogen aryl indole lactam compound according to any one of claims 1 to 3as a substrate.
5. A preparation method of an axial chiral compound containing C-N axial chiral amino acid ester is characterized in that: a method for synthesizing an axial chiral compound having a C-N axial chiral amino acid ester using the nitrogen aryl indole lactam compound according to any one of claims 1 to 3as a substrate.
6. The method of claim 5, wherein: taking nitrogen aryl indole lactam shown in a formula 1 and alcohol shown in a formula 2 as raw materials, and taking chiral base as a catalyst to complete the reaction to obtain a target product compound shown in a formula 3;
wherein: the compound represented by the formula 2 is as follows:
9. The method of claim 8, wherein: the dosage of the chiral base catalyst is 10 mol% of the dosage of the compound shown in the formula I; the molar ratio of the compound of formula I to the compound of formula 2 is 1: 1.2.
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