Classifications

• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07D—HETEROCYCLIC COMPOUNDS
  • C07D487/00—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, not provided for by groups C07D451/00 - C07D477/00
  • C07D487/02—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, not provided for by groups C07D451/00 - C07D477/00 in which the condensed system contains two hetero rings
  • C07D487/04—Ortho-condensed systems
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
  • C07F7/00—Compounds containing elements of Groups 4 or 14 of the Periodic Table
  • C07F7/02—Silicon compounds
  • C07F7/08—Compounds having one or more C—Si linkages
  • C07F7/0803—Compounds with Si-C or Si-Si linkages
  • C07F7/081—Compounds with Si-C or Si-Si linkages comprising at least one atom selected from the elements N, O, halogen, S, Se or Te
  • C07F7/0812—Compounds with Si-C or Si-Si linkages comprising at least one atom selected from the elements N, O, halogen, S, Se or Te comprising a heterocyclic ring
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07B—GENERAL METHODS OF ORGANIC CHEMISTRY; APPARATUS THEREFOR
  • C07B2200/00—Indexing scheme relating to specific properties of organic compounds
  • C07B2200/07—Optical isomers
• • Y—GENERAL 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
  • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
  • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
  • Y02P20/00—Technologies relating to chemical industry
  • Y02P20/50—Improvements relating to the production of bulk chemicals
  • Y02P20/55—Design of synthesis routes, e.g. reducing the use of auxiliary or protecting groups

Definitions

• the present application belongs to the field of pharmaceutical synthesis, and in particular, the present application relates to a method for preparing a chiral pyrrolopyrimidine compound and related intermediates.
• Protein kinases also known as protein phosphakinase, are a class of enzymes that catalyze the phosphorylation of proteins. Protein kinases exert their physiological functions by catalyzing the phosphorylation of proteins, including cell growth, survival and differentiation, organ formation and morphological changes, new blood vessel production, tissue repair and regeneration. In addition to normal physiological functions, many protein kinases play an important role in human diseases such as cancer. A subgroup of oncoprotein kinases of protein kinases can cause tumor formation and growth when dysregulated, and further lead to tumor metastasis and progression. To date, oncogenic protein kinases are one of the most important targets for the treatment of cancer diseases.
• Protein kinases can be divided into receptor type and non-receptor type.
• the subfamily of non-receptor tyrosine kinases includes the two-faced kinase (JAK).
• JB Two-faced kinase
• Janus kinase is a type of non-receptor tyrosine kinase (PTK) that is present in cells and transmits cytokine stimulation signals through the JAK-STAT pathway.
• the JAK-STAT pathway transmits extracellular chemical signals through the cell membrane into the gene promoter located on the DNA in the nucleus, ultimately affecting the changes in DNA transcription and activity levels in the cell.
• the JAK-STAT pathway consists of three major components: 1) receptor; 2) two-faced kinase (JAK) and 3) signal transducer and activator of transcription (STAT).
• the receptor can be activated by interferon, interleukin, growth factor or other chemical messengers, which leads to JAK autophosphorylation; the STAT protein then binds to the phosphorylated receptor, allowing STAT to be phosphorylated by JAK; then phosphorylating the STAT protein Isolation, dimerization and translocation into the nucleus of the receptor to bind to specific DNA sites and alter transcription (Scott, MJ, CJ Godshall et al. (2002). "Jaks, STATs, Cytokines, and Sepsis" Clin Diagn Lab Immunol 9(6): 1153-9).
• JAK1 JAK2, JAK3, and TYK2 (Tyrosine kinase 2).
• JAK proteins range in size from 120-140 kDa and contain seven conserved JAK homology (JH) domains; one of which is a functional catalytic kinase domain and the other is a pseudokinase domain. It effectively functions as a regulator and/or acts as a docking site for STAT (Scott, Godshall et al. 2002, supra).
• the compound of the formula I is a chiral compound, and it is required to develop a preparation method with high yield, high chiral purity and good atomic economy.
• the invention provides a process for the preparation of a compound of formula I which comprises reacting a compound of formula A with a compound of formula 6 or a salt thereof to provide a compound of formula 7 or a compound of formula 14 and a compound of formula 7 or a compound of formula 14 to give a compound of formula I :
• R 1 is selected from H or an amino protecting group
• R A is selected from H or CH 3 .
• Another aspect of the present application provides a process for the preparation of a compound of formula 7, which comprises reacting a compound of formula 5 with a compound of formula 6 or a salt thereof to provide a compound of formula 7:
• R 1 is selected from H or an amino protecting group.
• Another aspect of the present application provides a process for the preparation of a compound of formula 14 which comprises reacting a compound of formula 13 with a compound of formula 6 or a salt thereof to provide a compound of formula 14:
• R 1 is selected from H or an amino protecting group.
• Another aspect of the present application provides the use of a reaction of a compound of Formula 5 with a compound of Formula 6 or a salt thereof to provide a compound of Formula 7 in the preparation of a compound of Formula I:
• R 1 is selected from H or an amino protecting group.
• Another aspect of the present application provides the use of a reaction of a compound of Formula 13 with a compound of Formula 6 or a salt thereof to provide a compound of Formula 14 in the preparation of a compound of Formula I:
• R 1 is selected from H or an amino protecting group.
• Another aspect of the present application provides the following intermediates for the preparation of compounds of formula I and their use in the preparation of compounds of formula I:
• R 1 is selected from H or an amino protecting group
• R 3 is selected from H or a cyclic imide protecting group
• R 4 is selected from -COOH, -CONH 2 or -CN, provided that R 4 is selected from -CN
• R 1 and R 3 are not simultaneously selected from H.
• the invention provides a process for the preparation of a compound of formula I which comprises reacting a compound of formula A with a compound of formula 6 or a salt thereof to provide a compound of formula 7 or a compound of formula 14 and a compound of formula 7 or a compound of formula 14 to give a compound of formula I :
• R 1 is selected from H or an amino protecting group
• R A is selected from H or CH 3 .
• a process for the preparation of a compound of Formula I of the present application comprises reacting a compound of Formula 5 with a compound of Formula 6 or a salt thereof to provide a compound of Formula 7 and a compound of Formula 7 to provide a compound of Formula I:
• R 1 is selected from H or an amino protecting group.
• the process for preparing a compound of formula I from a compound of formula 7 optionally includes a) a conversion of a carboxy group to an amide group, b) a reaction of converting an amide group to a cyano group, c ) the reaction of the amino protective group connected to the pyrazole ring, d) removing the protective group on the pyrazole ring reaction of amino and / or e) elimination reaction of R 1.
• the manner in which the above five reactions are described does not limit the order in which the reactions occur. Those skilled in the art can change the reaction sequence of the above five reactions according to actual conditions, or combine two or more of the reactions simultaneously, which are all within the protection scope of the present application.
• the reaction to remove the protecting group of the amino group on the pyrazole ring and e) the removal of R may be d) the reaction of removing the protecting group of the amino group on the pyrazole ring before the reaction of e) removing R 1 , or e) the reaction of removing R 1 prior to d) removing the pyrazole
• the reaction of the protecting group of the amino group on the ring occurs, or d) the reaction of removing the protecting group of the amino group on the pyrazole ring occurs simultaneously with the reaction of e) removing R 1 .
• the compound of Formula I when R 1 is an amino protecting group in the compound of Formula 7, is prepared to provide a compound of Formula I comprising the steps of: (1) an amino linkage to a pyrazole ring of a compound of Formula 7; a protecting group; (2) converting a carboxyl group on the compound obtained in the step (1) into an amide group; (3) converting an amide group on the compound obtained in the step (2) into a cyano group; (4) removing the step by ( 3) an amino protecting group on the pyrazole ring of the obtained compound, and (5) before step (1), or after step (1), before step (2), or after step (2), before step (3), or R 1 is removed before step (4), after step (4), or after step (4), or simultaneously with step (4).
• the compound of Formula I when R 1 is H in the compound of Formula 7, is prepared from a compound of Formula 7 comprising the steps of: (1) protecting the amino group on the pyrazole ring of the compound of Formula 7; (2) converting a carboxyl group on the compound obtained in the step (1) into an amide group; (3) converting an amide group on the compound obtained in the step (2) into a cyano group; and (4) removing the step (3) An amino protecting group on the pyrazole ring of the resulting compound.
• R 1 is selected from H
• R 2 is selected from a cyclic imide protecting group.
• a process for the preparation of a compound of Formula I of the present application comprises reacting a compound of Formula 13 with a compound of Formula 6 or a salt thereof to provide a compound of Formula 14 and a compound of Formula 14 to provide a compound of Formula I:
• R 1 is selected from H or an amino protecting group.
• the process for preparing a compound of formula I from a compound of formula 14 optionally includes f) a reaction of converting an amide group to a cyano group, and g) protecting the amino group on the pyrazole ring. Reaction, h) removal of the protecting group of the amino group on the pyrazole ring and / or i) reaction to remove R 1 .
• the manner in which the above four reactions are described does not limit the order in which the reactions occur. Those skilled in the art can change the reaction sequence of the above four reactions according to actual conditions, or combine two or more of the reactions simultaneously, which are all within the protection scope of the present application.
• the order of the reaction of 1 may be h) the reaction of removing the protecting group of the amino group on the pyrazole ring precedes the reaction of i) the removal of R 1 , or i) the reaction of removing R 1 prior to the removal of pyrazole by h)
• the reaction of the protecting group of the amino group on the ring occurs, or h) the reaction of removing the protecting group of the amino group on the pyrazole ring occurs simultaneously with the reaction of i) the removal of R 1 .
• the g) reaction of the amino-linked protecting group on the pyrazole ring precedes the f) amide
• the reaction of converting a group to a cyano group occurs, or g) reacting an amino group attached to a protecting group on the pyrazole ring prior to i) removing the reaction of R 1 .
• a compound of formula 14 wherein R 1 is an amino protecting group to give a compound of formula I comprising the steps of preparing a compound of formula 14 a: an amino group on the pyrazole ring (1) of the compound of formula 14 is connected a protecting group; (2) converting an amide group on the compound obtained in the step (1) to a cyano group; (3) removing an amino protecting group on the pyrazole ring of the compound obtained in the step (2), and (4) before after after step (1), or a step (1) prior to step (2), or step (2) prior to step (3), or step (3), or step (3) removal of R & lt concurrently 1 .
• a compound of formula 14 wherein R 1 is H when a compound of formula 14 wherein R 1 is H, to give a compound of formula I comprising the steps of preparing a compound of formula 14 by the: (1) amino group protecting group on the pyrazole ring of the compound of formula 14 (2) converting the amide group on the compound obtained in the step (1) to a cyano group; and (3) removing the amino protecting group on the pyrazole ring of the compound obtained in the step (2).
• R 2 is selected from a cyclic imide protecting group.
• Another aspect of the present application provides a process for the preparation of a compound of formula 7, which comprises reacting a compound of formula 5 with a compound of formula 6 or a salt thereof to provide a compound of formula 7:
• R 1 is selected from H or an amino protecting group.
• Another aspect of the present application provides a process for the preparation of a compound of formula 14 which comprises reacting a compound of formula 13 with a compound of formula 6 or a salt thereof to provide a compound of formula 14:
• R 1 is selected from H or an amino protecting group.
• Another aspect of the present application provides the use of a reaction of a compound of Formula 5 with a compound of Formula 6 or a salt thereof to provide a compound of Formula 7 in the preparation of a compound of Formula I:
• R 1 is selected from H or an amino protecting group.
• Another aspect of the present application provides the use of a reaction of a compound of Formula 13 with a compound of Formula 6 or a salt thereof to provide a compound of Formula 14 in the preparation of a compound of Formula I:
• R 1 is selected from H or an amino protecting group.
• Another aspect of the application provides a compound of formula II, a compound of formula 12 and a compound of formula 13:
• R 1 is selected from H or an amino protecting group
• R 3 is selected from H or a cyclic imide protecting group
• R 4 is selected from -COOH, -CONH 2 or -CN, provided that R 4 is selected from -CN
• R 1 and R 3 are not simultaneously selected from H.
• Another aspect of the present application provides the use of a compound of formula II, a compound of formula 12 and a compound of formula 13 in the preparation of a compound of formula I:
• R 1 is selected from H or an amino protecting group
• R 3 is selected from H or a cyclic imide protecting group
• R 4 is selected from -COOH, -CONH 2 or -CN, provided that R 4 is selected from -CN
• R 1 and R 3 are not simultaneously selected from H.
• the compound of formula II is selected from the group consisting of
• the compound of Formula 12 is selected from the group consisting of
• the compound of Formula 13 is selected from the group consisting of
• the amino protecting group is selected from the group consisting of methylol, benzyloxycarbonyl (Cbz), 2,2,2-trichloroethoxycarbonyl (Troc), 2-(trimethylsilane) Ethyloxycarbonyl (Teoc), 2-(4-trifluoromethylbenzenesulfonyl)ethoxycarbonyl (Tsc), tert-butoxycarbonyl (Boc), 1-adamantyloxycarbonyl (Adoc), 2 -adamantylcarbonyl (2-Adoc), 2,4-dimethylpent-3-yloxycarbonyl (Doc), cyclohexyloxycarbonyl (Hoc), 1,1-dimethyl-2,2 ,2-trichloroethoxycarbonyl (TcBoc), vinyl, 2-chloroethyl, 2-benzenesulfonylethyl, p-nitrophenylsulfonyl,
• the cyclic imide protecting group is selected from the group consisting of Optimal
• the salt of the compound of Formula 6 may be selected from a chiral salt or an achiral salt.
• the chiral acid used to form the chiral salt of the compound of Formula 6 is selected from the group consisting of the following acids or their enantiomeric excess: mandelic acid, 2-chloromandelic acid, camphoric acid, lactic acid, malic acid.
• 3-bromocamphor-8-sulfonic acid 3-bromocamphor-10-sulfonic acid, 10-camphorsulfonic acid, 2-amino-7,7-dimethylbicyclo[2,2,1]heptan-1- Methylenesulfonic acid, 2-acrylamide-7,7-dimethylbicyclo[2,2,1]hept-1-methanesulfonic acid or tartaric acid and its acyl derivative, preferably from lactic acid, malic acid , camphoric acid, 10-camphorsulfonic acid, tartaric acid, diacetyltartaric acid, dibenzoyltartaric acid, di-p-methylbenzoyltartaric acid, di-p-methoxybenzoyltartaric acid, di-p-chlorobenzoyltartaric acid, Di-p-bromobenzoyltartaric acid, di-p-fluorobenzoyltartaric acid, di-p-nitrobenzoyltartaric acid,
• the chiral acid used to form the chiral salt of the compound of Formula 6 is selected from the group consisting of D-tartaric acid, D-diacetyltartaric acid, D-dibenzoyltartaric acid, D-di-p-methylbenzene.
• Formyl tartaric acid D-di-p-methoxybenzoyltartaric acid, D-di-p-chlorobenzoyltartaric acid, D-di-p-bromobenzoyltartaric acid, D-di-p-fluorobenzoyltartaric acid, D-pair Nitrobenzoyltartaric acid, D-di-p-aminobenzoyltartaric acid or D-di-p-cyanobenzoyltartaric acid.
• the achiral salt of the compound of Formula 6 is selected from the group consisting of a hydrochloride, a hydrobromide, a nitrate, a sulfate, a phosphate, a formate, an acetate, a trifluoroacetate.
• fumarate, oxalate, maleate, citrate, succinate, methanesulfonate, besylate or p-toluenesulfonate preferably from hydrochloride, hydrobromic acid a salt, a sulfate, a formate, an acetate, a trifluoroacetate, a fumarate, a maleate, a methanesulfonate or a p-toluenesulfonate, more preferably a hydrochloride or a Acid salt.
• the molar ratio of the compound of the formula 5 to the compound of the formula 6 is from 1.0:1.0 to 5.0, preferably from 1.0:1.0 to 3.0, more preferably from 1.0:1.0 to 2.0, further preferably from 1.0:1.0,1.0. : 1.1, 1.0: 1.2, 1.0: 1.3, 1.0: 1.4, 1.0: 1.5, 1.0: 1.6, 1.0: 1.7, 1.0: 1.8, 1.0: 1.9 or 1.0: 2.0, still more preferably 1.0: 1.2.
• the reaction of the compound of Formula 5 with a compound of Formula 6 or a salt thereof to give a compound of Formula 7 is carried out under neutral or basic conditions.
• the basic conditions are achieved by the addition of the following alkali reagents: sodium hydroxide, potassium hydroxide, lithium hydroxide, potassium carbonate, cesium carbonate, sodium carbonate, potassium hydrogencarbonate, sodium hydrogencarbonate, sodium acetate, potassium acetate, sodium methoxide.
• the molar ratio of the compound of the formula 5 to the alkali reagent is from 1.0:1.0 to 5.0, preferably from 1.0:1.0 to 3.0, more preferably from 1.0:1.0 to 2.0, further preferably from 1.0:1.0, 1.0:1.1, 1.0:1.2, 1.0:1.3. 1.0: 1.4, 1.0: 1.5, 1.0: 1.6, 1.0: 1.7, 1.0: 1.8, 1.0: 1.9 or 1.0: 2.0, still more preferably 1.0: 1.5.
• the compound of the formula 5 is reacted with a compound of the formula 6 or a salt thereof to give a reaction solvent of the compound of the formula 7 selected from the group consisting of toluene, xylene, DMSO, N-methylpyrrolidone, N,N-dimethyl Carbamide or N,N-dimethylacetamide or a mixed solvent of one or more, preferably N-methylpyrrolidone.
• a reaction solvent of the compound of the formula 7 selected from the group consisting of toluene, xylene, DMSO, N-methylpyrrolidone, N,N-dimethyl Carbamide or N,N-dimethylacetamide or a mixed solvent of one or more, preferably N-methylpyrrolidone.
• the compound of the formula 5 is reacted with the compound of the formula 6 or a salt thereof to give a reaction temperature of the compound of the formula 7 of 80 to 180 ° C, preferably 80 ° C, 90 ° C, 100 ° C, 110 ° C, 120 ° C. , 130 ° C, 140 ° C, 150 ° C, 160 ° C, 170 ° C or 180 ° C.
• the molar ratio of the compound of the formula 13 to the compound of the formula 6 is from 1.0:1.0 to 5.0, preferably from 1.0:1.0 to 3.0, more preferably from 1.0:1.0 to 2.0, further preferably from 1.0:1.0,1.0. : 1.1, 1.0: 1.2, 1.0: 1.3, 1.0: 1.4, 1.0: 1.5, 1.0: 1.6, 1.0: 1.7, 1.0: 1.8, 1.0: 1.9 or 1.0: 2.0, still more preferably 1.0: 1.2.
• the reaction of the compound of Formula 13 with a compound of Formula 6 or a salt thereof to give a compound of Formula 14 is carried out under neutral or basic conditions.
• the basic conditions are achieved by the addition of the following alkali reagents: sodium hydroxide, potassium hydroxide, lithium hydroxide, potassium carbonate, cesium carbonate, sodium carbonate, potassium hydrogencarbonate, sodium hydrogencarbonate, sodium acetate, potassium acetate, sodium methoxide.
• the molar ratio of the compound of the formula 13 to the base reagent is from 1.0:1.0 to 5.0, preferably from 1.0:1.0 to 3.0, more preferably from 1.0:1.0 to 2.0, further preferably from 1.0:1.0, 1.0:1.1, 1.0:1.2, 1.0:1.3. 1.0: 1.4, 1.0: 1.5, 1.0: 1.6, 1.0: 1.7, 1.0: 1.8, 1.0: 1.9 or 1.0: 2.0, still more preferably 1.0: 1.5.
• the reaction of the compound of the formula 13 with the compound of the formula 6 or a salt thereof to give the compound of the formula 14 is selected from the group consisting of toluene, xylene, DMSO, N-methylpyrrolidone, N,N-dimethyl Carbamide or N,N-dimethylacetamide or a mixed solvent of one or more, preferably N-methylpyrrolidone.
• the compound of the formula 13 is reacted with the compound of the formula 6 or a salt thereof to give a reaction temperature of the compound of the formula 14 of 80 to 180 ° C, preferably 80 ° C, 90 ° C, 100 ° C, 110 ° C, 120 ° C. , 130 ° C, 140 ° C, 150 ° C, 160 ° C, 170 ° C or 180 ° C.
• the conversion of the carboxyl group to an amide group includes the reaction of first converting a carboxyl group to an acid chloride and then converting the acid chloride to an amide group.
• the reaction of converting the carboxyl group into an acid chloride and the conversion of the acid chloride into an amide group can be carried out stepwise or by a "one-pot method".
• the reagent used in the reaction for converting the carboxyl group to the acid chloride is selected from a combination of one or more of phosphorus trichloride, phosphorus pentachloride, thionyl chloride and oxalyl chloride, preferably oxalyl chloride.
• the solvent used for the conversion of the carboxyl group to the acid chloride is selected from the group consisting of tetrahydrofuran, dichloromethane, chloroform, chlorobenzene, acetonitrile, DMA, NMP, ethyl acetate, isopropyl acetate, toluene or xylene or more.
• a mixed solvent preferably NMP, tetrahydrofuran or dichloromethane or a mixed solvent thereof.
• the conversion of the acid chloride to an amide group is carried out in the presence of an aminating agent selected from the group consisting of ammonia, liquid ammonia or ammonia, preferably a combination of ammonia or ammonia.
• the solvent used for the conversion of the acid chloride to the amide group is selected from the group consisting of tetrahydrofuran, dichloromethane, chloroform, chlorobenzene, acetonitrile, DMA, NMP, ethyl acetate, isopropyl acetate, toluene or xylene or a solvent
• the above mixed solvent is preferably NMP, tetrahydrofuran or dichloromethane or a mixed solvent thereof.
• the conversion of the amide group to a cyano group is carried out in the presence of a dehydrating agent selected from the group consisting of phosphorus oxychloride,
• a dehydrating agent selected from the group consisting of phosphorus oxychloride,
• a combination of one or more of cyanuric chloride, phosphorus pentoxide, dichlorosulfoxide, trifluoroacetic anhydride, trifluorosulfonate or oxalyl chloride is preferably phosphorus oxychloride or cyanuric chloride.
• the solvent used for the conversion of the amide group to a cyano group is selected from the group consisting of tetrahydrofuran, dichloromethane, chloroform, chlorobenzene, acetonitrile, DMA, NMP, DMSO, ethyl acetate, isopropyl acetate, toluene or xylene. Or a mixed solvent of one or more of the above solvents, preferably dichloromethane or NMP or a mixed solvent of the two.
• SEM- means 2-(trimethylsilyl)ethoxymethyl.
• the compound of formula 5 when used as a chemical bond When indicated, it means that the chemical bond and the direction of the attached alkenyl group are not limited.
• the compound of formula 5 includes the following structure:
• reaction of converting the carboxyl group into an amide group refers to
• reaction finger for removing R 1 the reaction finger for removing R 1
• the amino-protecting group or the cyclic imide protecting group and the method of linking or removing the same may be carried out by a conventional method in the art, and the method may be a one-step reaction or a multi-step reaction, for example, It is not limited to the implementation of "Greene's Protective Groups in Organic Synthesis-4th Edition” by Wiley Press or “Protective Chemistry” by Chemical Industry Press.
• the chiral compound is in enantiomeric excess
• the enantiomeric excess means that the content of the chiral isomer (the amount of the substance) is equal to or greater than about 10 %, about 20%, about 30%, about 40%, about 50%, about 60%, about 70%, about 80%, about 90%, about 95%, about 96%, about 97%, about 98%, About 99%, about 99.1%, about 99.2%, about 99.3%, about 99.4%, about 99.5%, about 99.6%, about 99.7%, about 99.8%, about 99.9%, or about 99.99%.
• the compounds may exist in specific geometric or stereoisomeric forms.
• This application contemplates all such compounds, including the cis and trans isomers, the (-)- and (+)-p-enantiomers, the (R)- and (S)-enantiomers, diastereomeric a conformation, a (D)-isomer, a (L)-isomer, and a racemic mixture thereof, and other mixtures, such as enantiomeric or diastereomeric excess mixtures, all of which belong to the present Within the scope of the application. Additional asymmetric carbon atoms may be present in the substituents such as alkyl groups. All such isomers, as well as mixtures thereof, are included within the scope of the invention.
• reaction is optionally carried out in a solvent, and all solvents used in the present application are commercially available, It can be used for further purification, and the reaction is generally carried out under an inert nitrogen atmosphere in an anhydrous solvent.
• proton nuclear magnetic resonance data was recorded on a BRUKER AVANCE III HD 500M spectrometer with chemical shifts expressed in ppm at the low field of tetramethylsilane; mass spectra were determined at Waters ACQUITY UPLC + XEVO G2 QTof.
• the mass spectrometer is equipped with an electrospray ionization source (ESI) operating in either positive or negative mode.
• ESI electrospray ionization source
• the preparation method of the present application has the characteristics of short steps, high stereoselectivity, high atomic utilization rate, mild reaction conditions and simple post-treatment, and avoids the use of expensive asymmetric reaction catalysts, and is suitable for industrial production.
• Step B 5-cyclopentylpyrazol-3-one
• Step C R-5-cyclopentylpyrazol-3-one-D-tartrate
• D-tartaric acid (135 g, 0.9 mol, 0.5 eq.) was added to a solution of 5-cyclopentylpyrazol-3-one (278 g, 1.8 mol, 1.0 eq.) in acetone under stirring at room temperature, and the reaction was stirred for 2 hours. Crystallization, filtration, filter cake acetone beaten 5 times, blasting at 50 ° C to obtain R-5-cyclopentylpyrazol-3-one-D-tartrate (241 g, 88% yield, 99.5% ee value) .
• Step D R-5-cyclopentylpyrazol-3-one (6)
• R-5-Cyclopentylpyrazol-3-one-D-tartrate (228 g, 0.75 mol, 1.0 eq.) was added to 4M sodium hydroxide (52.2 g, 2.61 mol, 1.74 eq.). The solution was extracted with methylene chloride. The organic layer was combined, evaporated, evaporated, evaporated, evaporated. , 99.5% ee value).
• Step E 4-Chloro-7- ⁇ [2-(trimethylsilyl)ethoxy]methyl ⁇ -7H-pyrrolo[2,3-d]pyrimidine (2)
• Step F 2-cyano-2- ⁇ 7- ⁇ [2-(trimethylsilyl)ethoxy]methyl ⁇ -7H-pyrrolo[2,3-d]pyrimidin-4-yl ⁇ acetic acid Ethyl ester (3)
• Step G 2- ⁇ 7- ⁇ [2-(Trimethylsilyl)ethoxy]methyl ⁇ -7H-pyrrolo[2,3-d]pyrimidin-4-yl ⁇ acetonitrile (4)
• Step H 3-(Dimethylamino)-2- ⁇ 7- ⁇ [2-(trimethylsilyl)ethoxy]methyl ⁇ -7H-pyrrolo[2,3-d]pyrimidine-4- Acrylonitrile (5a)
• Step I (R)-3- ⁇ 3-Amino-4- ⁇ 7- ⁇ [2-(trimethylsilyl)ethoxy]methyl ⁇ -7H-pyrrolo[2,3-d]pyrimidine 4-yl ⁇ -1H-pyrazol-1-yl ⁇ -3-cyclopentylpropionic acid (7a)
• Step J (R)-3- ⁇ 3-(2,5-dioxopyrrol-1-yl)-4- ⁇ 7- ⁇ [2-(trimethylsilyl)ethoxy]methyl ⁇ -7H-pyrrolo[2,3-d]pyrimidin-4-yl ⁇ -1H-pyrazol-1-yl ⁇ -3-cyclopentylpropionic acid (8b)
• Step K (R)-3-Cyclopentyl-3-[3-(2,5-dioxopyrrol-1-yl)-4-(7- ⁇ [2-(trimethylsilyl)) Oxy]methyl ⁇ -7H-pyrrolo[2,3-d]pyrimidin-4-yl)-1H-pyrazol-1-yl]propanamide (9b)
• Step L (R)-3-Cyclopentyl-3-[3-(2,5-dioxopyrrol-1-yl)-4-(7- ⁇ [2-(trimethylsilyl)) Oxy]methyl ⁇ -7H-pyrrolo[2,3-d]pyrimidin-4-yl)-1H-pyrazol-1-yl]propanenitrile (10b)
• Step M (R)-3-Cyclopentyl-3- ⁇ 3-(2,5-dioxopyrrol-1-yl)-4- ⁇ (7-hydroxymethyl)-7H-pyrrolo[2 ,3-d]pyrimidin-4-yl ⁇ -1H-pyrazol-1-yl ⁇ propionitrile (11a)
• Step B 3-Amino-2- ⁇ 7- ⁇ [2-(trimethylsilyl)ethoxy]methyl ⁇ -7H-pyrrolo[2,3-d]pyrimidin-4-yl ⁇ acrylonitrile (13a)
• Step C (R)-3- ⁇ 3-Amino-4- ⁇ 7- ⁇ [2-(trimethylsilyl)ethoxy]methyl ⁇ -7H-pyrrolo[2,3-d]pyrimidine 4-yl ⁇ -1H-pyrazol-1-yl ⁇ -3-cyclopentylpropionamide (14a)
• N-diisopropylethylamine (62 g, 0.48 mol, 1.5 eq.), warmed to 120 ° C under nitrogen atmosphere, stirred for 12 hours, cooled to room temperature, quenched with water, extracted with ethyl acetate, washed with ethyl acetate Washed with saturated brine, dried over anhydrous sodium sulfate, decolorized with activated carbon, filtered, concentrated under reduced pressure to give residue, and purified by silica gel column chromatography (R)- ⁇ 3-amino-4- ⁇ 7- ⁇ [2-(3) Methylsilyl)ethoxy]methyl ⁇ -7H-pyrrolo[2,3-d]pyrimidin-4-yl ⁇ -1H-pyrazol-1-yl ⁇ -3-cyclopentylpropionamide (14a (89.2 g, 59.4% yield, ee value 100.0%).
• Step D (R)-3- ⁇ 3-(2,5-dioxopyrrol-1-yl)-4- ⁇ 7- ⁇ [2-(trimethylsilyl)ethoxy]methyl ⁇ -7H-pyrrolo[2,3-d]pyrimidin-4-yl ⁇ -1H-pyrazol-1-yl ⁇ -3-cyclopentylpropionamide (9b)
• Step A (R)-3- ⁇ 3-(1,3-dioxoisoindol-2-yl)-4- ⁇ 7- ⁇ [2-(trimethylsilyl)ethoxy]- -7 ⁇ -7H-pyrrolo[2,3-d]pyrimidin-4-yl ⁇ -1H-pyrazol-1-yl]-3-cyclopentylpropionamide (9c)
• Step B (R)-3- ⁇ 3-(1,3-dioxoisoindol-2-yl)-4- ⁇ 7- ⁇ [2-(trimethylsilyl)ethoxy]- -7 ⁇ -7H-pyrrolo[2,3-d]pyrimidin-4-yl ⁇ -1H-pyrazol-1-yl]-3-cyclopentylpropionitrile (10c)
• Step C (R)-3- ⁇ 3-(1,3-dioxoisoindol-2-yl)-4-[7-(hydroxymethyl)-7H-pyrrolo[2,3-d Pyrimidin-4-yl]-1H-pyrazol-1-yl ⁇ -3-cyclopentylpropionitrile (11b)
• Step D (R)-3-[3-Amino-4-(7H-pyrrolo[2,3-d]pyrimidin-4-yl)-1H-pyrazol-1-yl]-3-cyclopentyl Propionitrile (I)

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