Patent Application
20240360082
The disclosure provides compounds that inhibit orthomyxovirus replication, and are accordingly useful for treatment of viral infections caused by orthomyxoviruses. The disclosure further provides pharmaceutical compositions containing these compounds and methods of using these compounds to treat or prevent viral infections caused by orthomyxovirus.
The orthomyxovirus family includes influenza A, influenza B and influenza C, all of which can infect humans, as well as several other genera of viruses that generally do not infect humans. Influenza infects millions of people and kills over 250,000 people globally each year. ‘The flu’ can vary in severity, but is usually only life-threatening for infants, the elderly, and those with underlying cardiopulmonary of immunologic disorders. However, the influenza virus is continually adapting, leading to emergence of new strains that are often more virulent, and these new strains have potential to cause pandemic outbreaks like the so-called Spanish flu (H1N1) that killed millions of people in 1918-1920, and was especially virulent in healthy young adults. Immunizations reduce the risk of infection, but they must be administered annually and are only effective against the particular strains that are predicted to be widespread in the upcoming flu season. Those predictions must be made months before flu season begins, and when the prediction of strain prevalence is wrong, immunizations provide limited protection.
The antivirals currently on the market for treating influenza target the M2 ion channel (amantadine and rimantadine), the neuroaminidase (e.g., oseltamivir), or the endonuclease (baloxavir). These must be administered at an early stage of infection in order to be effective, and resistance to both of these classes of antivirals has been documented (at varying rates depending upon the drug class). Thus there remains a need for new antivirals effective against influenza.
The influenza nucleoprotein (NP) has emerged as a new target for antiviral drug discovery. NP encapsidates viral RNA to form stable ribonucleoprotein (RNP) complexes. NP binds to the ribose-phosphate backbone of the viral RNA, leaving the RNA bases exposed to solvation and accessible to the viral polymerase, rendering the RNP complex is transcriptionally competent. While the precise mechanism by which they act is unclear, compounds that inhibit proper assembly of NP and/or RNP complexes have been shown to have antiviral activity. C. Cianci, et al., Antiviral Chemistry and Chemother., 23, 77-91 (2013).
Influenza A virus (IAV) is the most important of these pathogens in humans, often accounting for the great majority of serious cases of influenza during a typical flu season; importantly, all previous influenza pandemics have been caused by IAV. Thus, there is a special need for antiviral therapeutics effective to treat influenza A. The present disclosure provides new compounds that inhibit replication of orthomyxoviruses specifically influenza A virus (IAV), influenza B virus (IBV), and influenza C virus, and thereby may be useful in the treatment of influenza.
Provided herein are compounds that inhibit replication of orthomyxoviruses, including influenza A, influenza B, and influenza C. Without being bound by theory, it is believed these compounds achieve their antiviral effects by inhibiting proper assembly of NP or RNP complexes.
In one aspect, the disclosure provide compounds of Formula (I), or stereoisomers thereof or pharmaceutically acceptable salts thereof:
Provided compounds include those of Formula (I), the subgenera of Formula (I) described herein, and all stereoisomers (including diastereoisomers and enantiomers), tautomers and isotopically enriched versions thereof (including deuterium substitutions), and pharmaceutically acceptable salts of these compounds.
The compounds of the disclosure are inhibitors of the function of influenza nucleoprotein as shown by the data provided herein, and they inhibit replication of influenza viruses. Accordingly, these compounds are useful to treat or prevent orthomyxovirus infections in mammals susceptible to such infections, and are particularly useful to treat influenza virus infections in humans. They are also useful to inhibit replication of orthomyxoviruses, including influenza viruses, in cells.
In another aspect, the disclosure provides pharmaceutical compositions comprising a provided compound and at least one pharmaceutically acceptable carrier or excipient. In certain embodiments such pharmaceutical compositions comprise a compound as disclosed herein and two or more pharmaceutically acceptable carriers or excipients. In an embodiment of this aspect such pharmaceutical compositions further comprise a therapeutically effective amount of at least one other antiviral agent. In an embodiment of this aspect such pharmaceutical compositions further comprise a therapeutically effective amount of one or more therapeutically active co-agents.
In another aspect, the disclosure provides a method to treat a subject infected with influenza A, B, or C, where the method comprises administering to a subject in need of such treatment an effective amount of a provided compound.
In another aspect, the disclosure provides a method to treat a subject infected with influenza A, B, or C, where the method comprises administering to a subject in need of such treatment an effective amount of a provided compound alone or in combination with at least one other antiviral agent, administered together or separately.
Another aspect of the disclosure is a method of inhibiting influenza virus nucleoprotein (NP), where the method comprises contacting NP with a provided compound.
Another aspect of the disclosure is a method of preventing or treating influenza, where the method comprises administering to a subject a therapeutically effective amount of a provided compound.
Another aspect of the disclosure is a method of treating influenza, where the method comprises administering to a subject in need thereof a therapeutically effective amount of a provided compound.
Another aspect of the disclosure is the use of a provided compound n the manufacture of a medicament for the treatment or prevention of influenza.
Another aspect of the disclosure is the use of a provided compound in the manufacture of a medicament for the treatment or prevention of influenza A, B, or C.
Another aspect of the disclosure is the use of a provided compound as a medicament for the treatment or prevention of influenza.
Another aspect of the disclosure is the use of a provided compound as a medicament for the treatment or prevention of influenza A, B, or C.
Another aspect of the disclosure is the use of a provided compound for the treatment or prevention of influenza.
Another aspect of the disclosure is the use of a provided compound for the treatment or prevention of influenza A, B, or C.
For purposes of interpreting this specification, the following definitions will apply, and whenever appropriate, terms used in the singular will also include the plural. Terms used in the specification have the following meanings unless the context clearly indicates otherwise.
The term “alkyl,” as used herein, refers to a fully saturated branched or straight chain hydrocarbon. In certain embodiments an alkyl group is a “C1-C2alkyl”, “C1-C3alkyl”, “C1-C4alkyl”, “C1-C5alkyl”, “C1-C6alkyl”, “C1-C7alkyl”, “C1-C8alkyl”, “C1-C9alkyl” or “C1-C10alkyl”, wherein the terms “C1-C2alkyl”, “C1-C3alkyl”, “C1-C4alkyl”, “C1-C5alkyl”, “C1-C6alkyl”, “C1-C7alkyl”, “C1-C8alkyl”, “C1-C9alkyl” or “C1-C10alkyl”, as used herein, refer to an alkyl group containing at least 1, and at most 2, 3, 4, 5, 6, 7, 8, 9 or 10 carbon atoms, respectively. Non-limiting examples of alkyl groups include methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl, tert-butyl, n-pentyl, isopentyl, neopentyl, n-hexyl, 3-methylhexyl, 2,2-dimethylpentyl, 2,3-dimethylpentyl, n-heptyl, n-octyl, n-nonyl, and n-decyl.
The term “alkylene,” as used herein, refers to a saturated branched or straight chain divalent hydrocarbon radical derived from an alkyl group as defined herein. In certain embodiments an alkylene group is a “C1-C3alkylene”, “C1-C4alkylene”, “C1-C5alkylene”, “C1-C6alkylene”, “C1-C7alkylene”, “C1-C8alkylene”, “C1-C9alkylene” or “C1-C10alkylene”, wherein the terms “C1-C3alkylene”, “C1-C4alkylene”, “C1-C5alkylene”, “C1-C6alkylene”, “C1-C7alkylene” and “C1-C8alkylene”, as used herein, refer to an alkylene group containing at least 1, and at most 3, 4, 5, 6, 7, 8, 9 or 10 carbon atoms respectively. Non-limiting examples of alkylene groups as used herein include, methylene, ethylene, n-propylene, isopropylene, n-butylene, isobutylene, sec-butylene, t-butylene, n-pentylene, isopentylene, hexylene, heptylene, octylene, nonylene, decylene and the like.
The term “alkoxy”, as used herein, refers to —O-alkyl or -alkyl-O—, wherein “alkyl” is as defined herein. In certain embodiments an alkoxy group is a “C1-C2alkoxy”, “C1-C3alkoxy”, “C1-C4alkoxy”, “C1-C5alkoxy”, “C1-C6alkoxy”, “C1-C7alkoxy”, “C1-C8alkoxy”, “C1-C9alkoxy” or “C1-C10alkoxy”, wherein the terms “C1-C3alkoxy”, “C1-C4alkoxy”, “C1-C5alkoxy”, “C1-C6alkoxy”, “C1-C7alkoxy”, “C1-C8alkoxy”, “C1-C7alkoxy” and “C1-C10alkoxy”, as used herein refer to —O—C1-C2alkyl, —O—C1-C3alkyl, —O—C1-C4alkyl, —O—C1-C5alkyl, —O—C1-C6alkyl, —O—C1-C7alkyl, —O—C1-C8alkyl, —O—C1-C9alkyl or —O—C1-C10alkyl, respectively. Non-limiting examples of “alkoxy” groups include methoxy, ethoxy, n-propoxy, isopropoxy, n-butoxy, isobutoxy, sec-butoxy, tert-butoxy, n-pentoxy, isopentoxy, hexoxy, heptoxy, octoxy, nonoxy and decoxy.
The term “C3-C8cycloalkyl” as used herein, refers to a fully saturated, monocyclic hydrocarbon ring system having 3 to 8 carbon atoms as ring members. Non-limiting examples of such “C3-C8cycloalkyl” groups include cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, cycloheptyl and cyclooctyl groups.
The terms “halo” or “halogen” as used herein, refer to fluoro (F), chloro (Cl), bromo (Br) or iodo (I).
The term “haloalkyl” as used herein, refers to an alkyl group as defined herein, wherein at least one of the hydrogen atoms of the alkyl is replaced by a halo group (as defined herein). The haloalkyl may be monohaloalkyl, dihaloalkyl, trihaloalkyl, or polyhaloalkyl including perhaloalkyl. A monohaloalkyl may have one iodo, bromo, chloro or fluoro within the alkyl group. Dihaloalkyl and polyhaloalkyl groups may have two or more of the same halo atoms or a combination of different halo groups within the alkyl. Typically the polyhaloalkyl contains up to 6, or 4, or 3, or 2 halo groups. Non-limiting examples of haloalkyl include fluoromethyl, difluoromethyl, trifluoromethyl, chloromethyl, dichloromethyl, trichloromethyl, pentafluoroethyl, heptafluoropropyl, difluorochloromethyl, dichlorofluoromethyl, difluoroethyl, difluoropropyl, dichloroethyl and dichloropropyl. A perhalo-alkyl refers to an alkyl having all hydrogen atoms replaced with halo atoms, e.g., trifluoromethyl. Preferred haloalkyl groups, unless specified otherwise, include monofluoro-, difluoro- and trifluoro-substituted methyl and ethyl groups, e.g. CF3, CHF2, CH2F, CH2CHF2 and CH2CF3.
The term “C1-C8haloalkyl” as used herein, refers to the respective “C1-C8alkyl”, as defined herein, wherein at least one of the hydrogen atoms of the “C1-C8alkyl” is replaced by a halo group (as defined herein). The C1-C8haloalkyl groups may be monoC1-C8haloalkyl, wherein such C1-C8haloalkyl groups have one iodo, one bromo, one chloro or one fluoro. Additionally, the C1-C8haloalkyl groups may be diC1-C8haloalkyl wherein such C1-C8haloalkyl groups may have two halo atoms independently selected from iodo, bromo, chloro or fluoro. Furthermore, the C1-C8haloalkyl groups may be polyC1-C8haloalkyl wherein such C1-C8haloalkyl groups may have two or more of the same halo atoms or a combination of two or more different halo atoms. Such polyC1-C8haloalkyl may be perhaloC1-C8haloalkyl where all the hydrogen atoms of the respective C1-C8alkyl have been replaced with halo atoms and the halo atoms may be the same or a combination of different halo atoms. Non-limiting examples of “C1-C8haloalkyl” groups include fluoromethyl, difluoromethyl, trifluoromethyl, chloromethyl, dichloromethyl, trichloromethyl, pentafluoroethyl, heptafluoropropyl, difluorochloromethyl, dichlorofluoromethyl, fluoroethyl, difluoroethyl, trifluoroethyl, difluoropropyl, dichloroethyl and dichloropropyl.
The term “haloalkoxy” as used herein, refers to the group —O-haloalkyl wherein at least one of the hydrogen atoms of the alkyl group of the alkoxy is replaced by a halo group (as defined herein). The haloalkoxy may be monohaloalkoxy, dihaloalkoxy, trihaloalkoxy, or polyhaloalkoxy including perhaloalkoxy. A monohaloalkoxy may have one iodo, bromo, chloro or fluoro within the alkyl group. Dihaloalkoxy and polyhaloalkoxy groups may have two or more of the same halo atoms or a combination of different halo groups within the alkyl. Typically, the polyhaloalkoxy contains up to 6, or 4, or 3, or 2 halo groups. Non-limiting examples of haloalkoxy include fluoromethoxy, difluoromethoxy, trifluoromethoxy, chloromethoxy, dichloromethoxy, trichloromethoxy, pentafluoroethoxy, heptafluoropropoxy, difluorochloromethoxy, dichlorofluoromethoxy, difluoroethoxy, difluoropropoxy, dichloroethoxy and dichloropropoxy. A perhalo-alkoxy refers to an alkoxy having all hydrogen atoms replaced with halo atoms, e.g., trifluoromethoxy. Preferred haloalkoxy groups, unless specified otherwise, include monofluoro-, difluoro- and trifluoro-substituted methoxy and ethoxygroups, e.g. —OCF3, —OCHF2, —OCH2F, —OCH2CHF2 and —OCH2CF3.
The term “C1-C8haloalkoxy” as used herein, refers to the group —O—C1-C8haloalkyl, wherein at least one of the hydrogen atoms of the “C1-C8alky” of the “C1-C8alkoxy” is replaced by a halo group (as defined herein). The C1-C8haloalkoxy groups may be monoC1-C8haloalkoxy, wherein such C1-C8haloalkoxy groups have one iodo, one bromo, one chloro or one fluoro. Additionally, the C1-C8haloalkoxy groups may be diC1-C8haloalkoxy wherein such C1-C8haloalkoxy groups may have two halo atoms independently selected from iodo, bromo, chloro or fluoro. Furthermore, the C1-C8haloalkoxy groups may be polyC1-C8haloalkoxy wherein such C1-C8haloalkoxy groups may have two or more of the same halo atoms or a combination of two or more different halo atoms. Such polyC1-C8haloalkoxy may be perhaloC1-C8haloalkoxy where all the hydrogen atoms of the respective C1-C8alkoxy have been replaced with halo atoms and the halo atoms may be the same or a combination of different halo atoms. Non-limiting examples of “C1-C8haloalkoxy” groups include fluoromethoxy, difluoromethoxy, trifluoromethoxy, chloromethoxy, dichloromethoxy, trichloromethoxy, pentafluoroethoxy, heptafluoropropoxy, difluorochloromethoxy, dichlorofluoromethoxy, fluoroethoxy, difluoroethoxy, trifluoroethoxy, difluoropropoxy, dichloroethoxy and dichloropropoxy.
The term “5-6 membered heteroaryl”, as used herein, refers to an aromatic, 5 membered or 6 membered system having 1 to 3 ring members independently selected from N, NR7, O and S, where R7 is as defined herein. Non-limiting examples of such 5 membered heteroaryl groups, as used herein, include furyl, imidazolyl, isoxazolyl, isothiazolyl, oxazolyl, pyrrolyl, pyrazolyl, thiadiazolyl, thiazolyl, thienyl, triazolyl, pyridyl, pyridazinyl, pyrazinyl, and pyrimidinyl.
The term “9-10 membered heteroaryl”, as used herein, refers to an aromatic, 9 or 10 membered fused bicyclic ring system having 1 to 4 ring members independently selected from N, NR7, N+O−, O and S, where R7 is as defined herein. Non-limiting examples of such bicyclic heteroaryl groups, as used herein, include indolyl, quinolinyl, isoquinolinyl, indazolyl, purinyl, phthalazinyl, naphthyridinyl, quinazolinyl, cinnolinyl, quinoxalinyl, benzo[c][1,2,5]oxadiazolyl, tetrazolo[1,5-a]pyridinyl, imidazo[1,2-a]pyridinyl, imidazo[4,5-b]pyridinyl, triazolo[4,3-a]pyrimidinyl, thieno[2,3-b]furanyl, 1H-pyrazolo[4,3-d]-oxazolyl, imidazo[2,1-b] thiazolyl, pyrazino[2,3-d]pyridazinyl, imidazo[1,2-b][1,2,4]triazinyl, benzoxazolyl, benzimidazolyl, imidazopyridinyl and benzothiazolyl. In certain embodiments such a bicyclic heteroaryl group is 1H-benzo[d]imidazolyl or 1H-imidazo[4,5-c]pyridinyl.
The term “heteroatoms” or“hetero atoms”, as used herein, refers to nitrogen (N), oxygen (O) or sulfur (S) atoms.
The term “4-8 monocyclic heterocycloalkyl,” as used herein refers to a cycloalkyl group as defined herein having one to three carbon atoms in the ring structure being replaced with one to three groups independently selected from N, NH, NR7, O, S, C═O and S(═O)2, wherein R7 is as defined herein. In particular the 4-8 monocyclic heterocycloalkyl is a fully saturated, monocyclic hydrocarbon ring structure having 4 to 8 ring members, wherein one to three of the ring members are independently selected from N, NH, NR7, O, S, C═O and S(═O)2, wherein R7 is as defined herein. Non-limiting examples of heterocycloalkyl groups, as used herein, include oxazepanyl, oxomorpholinyl, dioxidothiomorpholinyl, dioxanyl, dioxepanyl, oxopyrrolidinyl, oxooxazolidinyl, azetidinyl, azetidin-1-yl, azetidin-2-yl, azetidin-3-yl, oxetanyl, oxetan-2-yl, oxetan-3-yl, oxetan-4-yl, thietanyl, thietan-2-yl, thietan-3-yl, thietan-4-yl, pyrrolidinyl, pyrrolidin-1-yl, pyrrolidin-2-yl, pyrrolidin-3-yl, pyrrolidin-4-yl, pyrrolidin-5-yl, tetrahydrofuranyl, tetrahydrofuran-2-yl, tetrahydrofuran-3-yl, tetrahydrofuran-4-yl, tetrahydrofuran-5-yl, tetrahydrothienyl, tetrahydrothien-2-yl, tetrahydrothien-3-yl, tetrahydrothien-4-yl, tetrahydrothien-5-yl, piperidinyl, piperidin-1-yl, piperidin-2-yl, piperidin-3-yl, piperidin-4-yl, piperidin-5-yl, piperidin-6-yl, tetrahydropyranyl, tetrahydropyran-2-yl, tetrahydropyran-3-yl, tetrahydropyran-4-yl, tetrahydropyran-5-yl, tetrahydropyran-6-yl, tetrahydrothiopyranyl, tetrahydrothiopyran-2-yl, tetrahydrothiopyran-3-yl, tetrahydrothiopyran-4-yl, tetrahydrothiopyran-5-yl, tetrahydrothiopyran-6-yl, piperazinyl, piperazin-1-yl, piperazin-2-yl, piperazin-3-yl, piperazin-4-yl, piperazin-5-yl, piperazin-6-yl, morpholinyl, morpholin-2-yl, morpholin-3-yl, morpholin-4-yl, morpholin-5-yl, morpholin-6-yl, thiomorpholinyl, thiomorpholin-2-yl, thiomorpholin-3-yl, thiomorpholin-4-yl, thiomorpholin-5-yl, thiomorpholin-6-yl, oxathianyl, oxathian-2-yl, oxathian-3-yl, oxathian-5-yl, oxathian-6-yl, dithianyl, dithian-2-yl, dithian-3-yl, dithian-5-yl, dithian-6-yl, dioxolanyl, dioxolan-2-yl, dioxolan-4-yl, dioxolan-5-yl, thioxanyl, thioxan-2-yl, thioxan-3-yl, thioxan-4-yl, thioxan-5-yl, dithiolanyl, dithiolan-2-yl, dithiolan-4-yl, dithiolan-5-yl, pyrazolidinyl, pyrazolidin-1-yl, pyrazolidin-2-yl, pyrazolidin-3-yl, pyrazolidin-4-yl, pyrazolidin-5-yl, 2-azabicyclo[4.2.0]octanyl, octahydro-1H-cyclopenta[b]pyridine and decahydroquinoline.
The term “9-12 membered heterocyclyl group” as used herein refers to a 9 to 12 membered, partially saturated hydrocarbon ring structure having 1 to 4 ring members independently selected from N, NH, NR7, O or —S—, wherein R7 is as defined herein, wherein the partially saturated hydrocarbon ring structure may be a monocyclic, a fused bicyclic or a fused tricyclic ring system. The heterocyclic group may be attached to another group at a nitrogen or a carbon atom. In certain embodiments a heterocyclyl can be a 9 to 12 membered fused bicyclic heterocyclyl ring structure having 1 to 4 ring members independently selected from N, NR7, O and S, where R7 is as defined herein. Non-limiting examples of heterocyclyl groups, as used herein, include benzo[d][1,3]dioxolyl, benzo[b][1,4]dioxepinyl, tetrahydrobenzo[d]isoxazolyl, dihydrobenzofuranyl, tetrahydropyrano[3,4-c]pyrazolyl, chromanyl and 6,7-dihydro-4H-[1,2,3]triazolo[5,1-c][1,4]oxazinyl.
As used herein, the term “an optical isomer” or “a stereoisomer” refers to any of the various stereo isomeric configurations which may exist for a given compound of the present disclosure and includes geometric isomers. It is understood that a substituent may be attached at a chiral center of a carbon atom. The term “chiral” refers to molecules which have the property of non-superimposability on their mirror image partner, while the term “achiral” refers to molecules which are superimposable on their mirror image partner.
Therefore, the disclosure includes enantiomers, diastereomers or racemates of the compound. “Enantiomers” are a pair of stereoisomers that are non-superimposable mirror images of each other. A 1:1 mixture of a pair of enantiomers is a “racemic” mixture. The term is used to designate a racemic mixture where appropriate. “Diastereoisomers” are stereoisomers that have at least two asymmetric atoms, but which are not mirror-images of each other. The absolute stereochemistry is specified according to the Cahn-Ingold-Prelog ‘R—S’ system. When a compound is a pure enantiomer, the stereochemistry at each chiral carbon may be specified by either R or S. Resolved compounds whose absolute configuration is unknown may be designated (+) or (−) depending on the direction (dextro- or levorotatory) which they rotate plane polarized light at the wavelength of the sodium D line.
Certain compounds described herein contain one or more asymmetric centers or axes and may thus give rise to enantiomers, diastereomers, and other stereoisomeric forms that may be defined, in terms of absolute stereochemistry, as (R)- or (S)-.
As used herein, the term “pharmaceutically acceptable carrier” includes any and all solvents, dispersion media, coatings, surfactants, antioxidants, preservatives (e.g., antibacterial agents, antifungal agents), isotonic agents, absorption delaying agents, salts, preservatives, drug stabilizers, binders, excipients, disintegration agents, lubricants, sweetening agents, flavoring agents, dyes, and the like and combinations thereof, as would be known to those skilled in the art for use in a pharmaceutical composition for administration to a human subject (see, for example, Remington: The Science and Practice of Pharmacy, 22nd ed.). Except insofar as any conventional carrier is incompatible with the active ingredient, its use in the therapeutic or pharmaceutical compositions is contemplated.
As used herein, the term “a therapeutically effective amount” of a compound refers to an amount of the compound of the present disclosure that will elicit the biological or medical response in a subject, for example, an amount sufficient to reduce of one or more symptoms, alleviate conditions, slow or delay disease progression, or prevent a disease, etc.
In one non-limiting embodiment, the term “a therapeutically effective amount” refers to the amount of a compound of the present disclosure that, when administered to a subject, is effective to reduce one or more symptoms associated with an influenza virus infection, or to shorten the duration of the symptomatic stage of an influenza virus infection, or to slow the progression of an influenza virus infection, or to reduce or stop the exacerbation of an underlying condition by an influenza virus infection.
In another non-limiting embodiment, the term “a therapeutically effective amount” refers to the amount of the compound of the present disclosure that, when administered to a cell, or a tissue, or a non-cellular biological material, or a medium, is effective to cause a statistically significant reduction in rate of replication or proliferation of a strain of orthomyxovirus.
As used herein, the term “subject” refers to an animal. Typically, the subject is a human.
As used herein, the term “inhibit”, “inhibition” or “inhibiting” refers to the reduction or suppression of a given condition, symptom, or disorder, or disease, or a significant decrease in the baseline activity of a biological activity or process.
As used herein, the term “treat”, “treating” or “treatment” of any disease or disorder refers in one embodiment, to ameliorating the disease or disorder (i.e., slowing or arresting or reducing the development of the disease or at least one of the clinical symptoms thereof).
In another embodiment “treat”, “treating” or “treatment” refers to alleviating or ameliorating at least one physical parameter including those which may not be discernible by the patient. In yet another embodiment, “treat”, “treating” or “treatment” refers to modulating the disease or disorder, either physically, (e.g., stabilization of a discemible symptom), physiologically, (e.g., stabilization of a physical parameter), or both. In yet another embodiment, “treat”, “treating” or “treatment” refers to preventing or delaying the development or progression of the disease or disorder.
As used herein, a subject is “in need of” a treatment if such subject would benefit biologically, medically or in quality of life from such treatment.
As used herein, the terms “a,” “an,” “the” and similar terms used in the context of the present disclosure (especially in the context of the claims) are to be construed to cover both the singular and plural unless otherwise indicated herein or clearly contradicted by the context.
The compound names provided herein were obtained using ChemDraw Professional version 17.1 (PerkinElmer Inc.).
Unless specified otherwise, the term “compounds of the present disclosure”, “compounds of the disclosure” or “compounds provided herein” refers to compounds of Formula (I), and sub-formulae thereof, including Formula (II), Formula (III), Formula (IV), Formula (V), Formula (V-a), Formula (V-b), Formula (V-c), Formula (V-a1), Formula (V-a2), Formula (V-b1), Formula (V-b2), Formula (V-b3), Formula (V-b4), Formula (V-c1), Formula (V-c2), Formula (V-c3), Formula (V-c4), Formula (V-d1), Formula (V-d2), Formula (V-d3), Formula (V-d4), Formula (V-e1), Formula (V-e2), Formula (V-e3) and Formula (V-e4), and pharmaceutically acceptable salts, stereoisomers (including diastereoisomers and enantiomers), rotamers, tautomers and isotopically labeled compounds (including deuterium substitutions), as well as inherently formed moieties.
The disclosure provides compounds having the structure of Formula (I), or a stereoisomer thereof or pharmaceutically acceptable salt thereof:
wherein:
Various embodiments are described herein. It will be recognized that features specified in each embodiment may be combined with other specified features to provide further embodiments. The following enumerated embodiments are representative of aspects of the disclosure.
Embodiment 1. A compound having the structure of Formula (I), or a stereoisomer thereof or pharmaceutically acceptable salt thereof
wherein:
Embodiment 2. The compound of Embodiment 1 having the structure of Formula (II), or a stereoisomer thereof or pharmaceutically acceptable salt thereof,
Embodiment 3. The compound of Embodiment 1 or Embodiment 2, wherein
Embodiment 4. The compound of any one of Embodiments 1 to 3, having the Formula (III), or a stereoisomer thereof or a pharmaceutically acceptable salt thereof,
Embodiment 5. The compound of any one of Embodiments 1 to 4, having the Formula (IV), or a stereoisomer thereof or a pharmaceutically acceptable salt thereof,
Embodiment 6. The compound of any one of Embodiments 1 to 5, or a stereoisomer thereof or a pharmaceutically acceptable salt thereof, wherein
Embodiment 7. The compound of any one of Embodiments 1 to 6 having the Formula (V), or a stereoisomer thereof or a pharmaceutically acceptable salt thereof,
Embodiment 8. The compound of any one of Embodiments 1 to 7 having the Formula (V-a), Formula (V-b) or Formula (V-c), or a stereoisomer thereof or a pharmaceutically acceptable salt thereof,
Embodiment 9. The compound of any one of Embodiments 1 to 8 having the Formula (V-a1) or Formula (V-a2), or a pharmaceutically acceptable salt thereof,
Embodiment 10. The compound of any one of Embodiments 1 to 9, wherein each R9 is independently selected from methyl, ethyl, isopropyl, neopentyl, methoxy, ethoxy, propoxy, isopropoxy, —CH2F, —CHF2, —CF3, R10, —OH, CN, F, C1, Br, —C(═O)CH3, —NH2, —NHCH3, —NHCH2CH3, —NHCH2CH2CH3, —NH(CH2)SCH3, —N(CH3)2, —C(═O)NH2, —C(═O)N(CH3)2, —C(═O)NHCH3, —NHC(═O)CH3, —NHC(═O)OC(CH3)3, —C(═O)OC(CH3)3, —NHS(═O)2CH3, —S(═O)2CH3, —S(═O)2CH(CH3)2, —S(═O)2CH2CH(CH3)2, —S(═O)2— cyclopropyl, NO2, CN, L3R11, L4R12, cyclopropyl, cyclopentyl, spiro attached cyclopropyl, spiro attached oxetanyl, spiro attached dioxepanyl or spiro attached tetrahydrofuranyl.
Embodiment 11. The compound of any one of Embodiments 1 to 9, wherein each R9 is independently selected from —C1-C8alkyl, —C1-C8alkoxy, halo, C1-C8haloalkyl, spiro attached C3-C8cycloalkyl, R10, L3R1, L4R12 or a spiro attached 4-8 membered monocyclic heterocycloalkyl group having 1 to 2 ring members independently selected from N, NR7, O, or S.
Embodiment 12. The compound of any one of Embodiments 1 to 11, wherein each R9 is independently selected from methyl, F, methoxy, —CH2F, —CHF2, L3R11, L4R12, —C(═O)N(CH3)2, cyclopropyl, cyclopentyl, spiro attached cyclopropyl, spiro attached oxetanyl, spiro attached dioxepanyl or spiro attached tetrahydrofuranyl.
Embodiment 13. The compound of any one of Embodiments 1 to 12, wherein each R9 is independently selected from methyl, L3R11 or L4R12.
Embodiment 14. The compound of any one of Embodiments 1 to 13, wherein each R9 is independently selected from methyl or L3R11, and wherein
Embodiment 15. The compound of any one of Embodiments 1 to 14, wherein each R9 is independently selected from methyl or L3R11, and wherein
Embodiment 16. The compound of any one of Embodiments 1 to 13, wherein each R9 is independently selected from methyl or L4R12, and wherein
Embodiment 17. The compound of any one of Embodiments 1 to 13 having the Formula (V-b1), Formula (V-b2), Formula (V-b3) or Formula (V-b4), or a pharmaceutically acceptable salt thereof,
Embodiment 18. The compound of any one of Embodiments 1 to 13 having the Formula (V-c1), Formula (V-c2), Formula (V-c3) or Formula (V-c4), or a pharmaceutically acceptable salt thereof,
Embodiment 19. The compound of any one of Embodiments 1 to 18, wherein
Embodiment 20. The compound of any one of Embodiments 1 to 19, wherein L4 is a bond, —CH2—, —(CH2)m—, —C(R7)2—, —CF2—, —OCH2—, —O(CH2)m—, —CH2O—, —CH2OCH2—, or —CH2OCH2C(R7)2—.
Embodiment 21. The compound of any one of Embodiments 1 to 20, wherein L4 is a bond, —CH2—, —(CH2)2—, —C(CH3)2—, —C(CH2CH3)2—, —CF2—, —CH2O—, —CH2OCH2—, —CH2OCH2C(CH3)2— or —CH2OCH2CH2.
Embodiment 22. The compound of any one of Embodiments 1 to 21, wherein L4 is —CH2—, or —CH2O—.
Embodiment 23. The compound of any one of Embodiments 1 to 22 having the Formula (V-d1), Formula (V-d2), Formula (V-d3) or Formula (V-d4) or a pharmaceutically acceptable salt thereof,
Embodiment 24. The compound of any one of Embodiments 1 to 13 having the Formula (V-e1), Formula (V-e2), Formula (V-e3) or Formula (V-e4), or a pharmaceutically acceptable salt thereof,
Embodiment 25. The compound of any one of Embodiments 1 to 24, wherein R12 is CN, CD3, OCD3, OH, N(CH3)2, —S(O)2CH3, —S(O)2-cyclopropyl, F, Cl, —OCHF2, —OCHF2, OCF3, CH2F, CHF2, CF3, -methyl, methoxy, ethoxy or isopropoxy
Embodiment 26. The compound of any one of Embodiments 1 to 25, wherein R12 is methoxy, ethoxy or isopropoxy.
Embodiment 27. A compound of Embodiment 1, selected from:
Embodiment 28. The compound of any one of Embodiments above, wherein R3 is L1R5.
Embodiment 29. The compound of any one of Embodiments above, wherein R3 is L2R9.
Embodiment 30. The compound of any one of Embodiments above, wherein R4 is halo, CN, C1-C8alkyl, C1-C8alkoxy or C3-C8cycloalkyl.
Embodiment 31. The compound of any one of Embodiments above, wherein R4 is halo.
Embodiment 32. The compound of any one of Embodiments above, wherein R4 is CN.
Embodiment 33. The compound of any one of Embodiments above, wherein R4 is C1-C8alkyl.
Embodiment 34. The compound of any one of Embodiments above, wherein R4 is C1-C8alkoxy.
Embodiment 35. The compound of any one of Embodiments above, wherein R4 is C3-C8cycloalkyl.
Embodiment 36. The compound of any one of Embodiments above, wherein L1 is a bond, —CH2—, —(CH2)m—, —OCH2—, —O—, —CH2O—, —O(CH2)m—, —CH2OCH2—, —CH(R7)—, —OCH(R7)—, —CH(R10)—, —OCH(R10)—, —CF2—, —CF2CH2—, —OCF2—, —OCH2C(═O)—, —OCH2C(═O)NH—, —OCH2CH(OH)CH2—, —CH2OCH2C(R7)2—, —C(R7)2—, —OC(R7)2—, —OCH(R10)CH2—, —NH— or —NH(CH2)m—.
Embodiment 37. The compound of any one of Embodiments above, wherein L1 is —CH2—, —OCH2—, —O—, —CH2O—, —O(CH2)m—, —CH(R7)—, —OCH(R7)—, —CH(R10)—, —OCH(R7)—, —CF2CH2—, —OCF2—, —OCH2C(═O)—, —OCH2C(═O)NH—, or —OCH2CH(OH)CH2.
Embodiment 38. The compound of any one of Embodiments above, wherein L1 is —CH2—, —OCH2—, —O—, or —CH2O—.
Embodiment 39. The compound of any one of Embodiments above, wherein L2 is a bond, —CH2—, —(CH2)m—, —OCH2—, —O—, —CH2O—, —O(CH2)m—, —CH2OCH2—, —CH(R7)—, —OCH(R7)—, —CH(R10)—, —OCH(R10)—, —CF2—, —CF2CH2—, —OCF2—, —OCH2C(═O)—, —OCH2C(═O)NH—, —OCH2CH(OH)CH2—, —CH2OCH2C(R7)2—, —C(R7)2—, —OC(R7)2—, —OCH(R7)CH2—, —NH— or —NH(CH2)m—.
Embodiment 40. The compound of any one of Embodiments above, wherein L2 is bond, —CH2—, —OCH2—, —O(CH2)m—, —CH(R7)—, —OCH(R10)—, —OCH(R10)CH2— or —OCH2C(═O)—.
Embodiment 41. The compound of any one of Embodiments above, wherein L2 is bond, —CH2— or —OCHr.
Embodiment 42. The compound of any one of Embodiments above, wherein L3 is a bond, —CH2—, —(CH2)m—, —OCH2—, —O—, —CH2O—, —O(CH2)m—, —CH2OCH2—, —CH(R7)—, —OCH(R7)—, —CH(R10)—, —OCH(R10)—, —CF2—, —CF2CH2—, —OCF2—, —OCH2C(═O)—, —OCH2C(═O)NH—, —OCH2CH(OH)CH2—, —CH2OCH2C(R7)2—, —C(R7)2—, —OC(R7)2—, —OCH(R10)CH2—, —NH— or —NH(CH2)m—.
Embodiment 43. The compound of any one of Embodiments above, wherein L3 is a bond, —CH2—, —OCH2—, —O—, —NH—, —NH(CH2)m—, —CH2OCH2— or —CH2O—.
Embodiment 44. The compound of any one of Embodiments above, wherein L3 is a bond, —CH2—, —OCH2—, —CH2OCHr or —CH2O—.
Embodiment 45. The compound of any one of Embodiments above, wherein L4 is a bond, —CH2—, —(CH2)m—, —OCH2—, —O—, —CH2O—, —O(CH2)m—, —CH2OCH2—, —CH(R7)—, —OCH(R7)—, —CH(R10)—, —OCH(R10)—, —CF2—, —CF2CH2—, —OCF2—, —OCH2C(═O)—, —OCH2C(═O)NH—, —OCH2CH(OH)CH2—, —CH2OCH2C(R7)2—, —C(R7)2—, —OC(R7)2—, —OCH(R10)CH2—, —NH— or —NH(CH2)m—.
Embodiment 46. The compound of any one of Embodiments above, wherein L4 is a —CH2—, —(CH2)m—, —C(R7)2—, —CF2—, —OCH2—, —O(CH2)m—, —CH2O—, —CH2OCH2—, —CH2OCH2C(R7)2— or —NH(CH2)m—.
Embodiment 47. The compound of any one of Embodiments above, wherein L4 is a bond, —CH2—, —(CH2)m—, —C(R7)2—, —CF2—, —OCH2—, —O(CH2)m—, —CH2O—, —CH2OCH2—, or —CH2OCH2C(R7)2—.
Embodiment 48. The compound of any one of Embodiments above, wherein L4 is a bond, —CH2—, —(CH2)2—, —C(CH3)2—, —C(CH2CH3)2—, —CF2—, —CH2O—, —CH2OCH2—, —CH2OCH2C(CH3)2— or —CH2OCH2CH2.
Embodiment 49. The compound of any one of Embodiments above, wherein L4 is —CH2—, or —CH2O—.
Embodiment 50. The compound of any one of Embodiments above, wherein R5 is phenyl substituted with 0-3 groups independently selected from R9.
Embodiment 51. The compound of any one of Embodiments above, wherein R5 is C3-C8cycloalkyl substituted with 0-3 groups independently selected from R9;
Embodiment 52. The compound of any one of Embodiments above, wherein R5 is a 4-8 membered monocyclic heterocycloalkyl group having 1 to 3 ring members independently selected from N, NR7, O, S, C═O or S(═O)2, substituted with 0-3 groups independently selected from R9.
Embodiment 53. The compound of any one of Embodiments above, wherein R5 is a 9-12 membered heterocyclyl group having 1 to 4 ring members independently selected from N, NR7, O, or S, substituted with 0-3 groups independently selected from R9.
Embodiment 54. The compound of any one of Embodiments above, wherein R5 is a 7-8 membered bridged-bicyclic heterocycloalkyl group having 1 to 2 ring members independently selected from N, NR7, O, S, C═O or S(═O)2, substituted with 0-3 groups independently selected from R9.
Embodiment 55. The compound of any one of Embodiments above, wherein R5 is a 6-8 membered fused bicyclic heterocycloalkyl group having 1 to 2 ring members independently selected from N, NR7, O, S, C═O or S(═O)2, substituted with 0-3 groups independently selected from R9.
Embodiment 56. The compound of any one of Embodiments above, wherein R5 is a 5-8 membered heteroaryl having 1 to 3 ring members independently selected from N, NR7, 0 or S, substituted with 0-3 groups independently selected from R9.
Embodiment 57. The compound of any one of Embodiments above, wherein R5 is a 9-10 membered heteroaryl having 1 to 4 ring members independently selected from N, NR7, N+O−, O, or S, substituted with 0-3 groups independently selected from R9.
Embodiment 58. The compound of any one of Embodiments above, wherein R6 is —CN, —OH, —NR7R8, —NR7C(═O)R8, —NR7S(═O)2R8, —C(═O)NR7R8, —S(═O)2R8, halo, C1-C8haloalkoxy, C1-C8-alkoxy, —C1-C8alkyl or —C1-C8alkylene.
Embodiment 59. The compound of any one of Embodiments above, wherein R9 is —C1-C8alkyl.
Embodiment 60. The compound of any one of Embodiments above, wherein each R9 is independently selected from —C1-C8alkyl, —C1-C8-alkoxy, C1-C8haloalkyl, spiro attached C3-C8cycloalkyl, R10, —OH, CN, halo, —C(═O)R7, —NR7R8, —C(═O)NR7R8, —NR7C(═O)R8, —NR7C(═O)OR8, —C(═O)OR8, —NR7S(═O)2R8, —S(═O)2R8, —S(═O)R1, NO2, CN, L3R11, L4R12 or a spiro attached 4-8 membered monocyclic heterocycloalkyl group having 1 to 2 ring members independently selected from N, NR7, O, or S.
Embodiment 61. The compound of any one of Embodiments above, wherein each R9 is independently selected from —C1-C8alkyl, —C1-C8-alkoxy, C1-C8haloalkyl, spiro attached C3-C8cycloalkyl, R10, —OH, CN, halo, L4R12 or a spiro attached 4-8 membered monocyclic heterocycloalkyl group having 1 to 2 ring members independently selected from N, NR9, O, or S.
Embodiment 62. The compound of any one of Embodiments above, wherein each R9 is independently selected from —R10 or L4R12.
Embodiment 63. The compound of any one of Embodiments above, wherein R10 is a C3-C8cycloalkyl, a 4-8 membered monocyclic heterocycloalkyl group having 1 to 2 ring members independently selected from N, NR7, O or S, or a 5-6 membered heteroaryl having 1 to 2 ring members independently selected from N, NR9, O, or S.
Embodiment 64. The compound of any one of Embodiments above, wherein R10 is a C3-C8cycloalkyl.
Embodiment 65. The compound of any one of Embodiments above, wherein R10 is a 4-8 membered monocyclic heterocycloalkyl group having 1 to 2 ring members independently selected from N, NR9, O or S.
Embodiment 66. The compound of any one of Embodiments above, wherein R10 is a 5-6 membered heteroaryl having 1 to 2 ring members independently selected from N, NR7, O, or S.
Embodiment 67. The compound of any one of Embodiments above, wherein R11 is phenyl substituted with 0-3 groups independently selected from R13.
Embodiment 68. The compound of any one of Embodiments above, wherein R11 is C3-C8cycloalkyl substituted with 0-3 groups independently selected from R13.
Embodiment 69. The compound of any one of Embodiments above, wherein R11 is a 4-8 membered monocyclic heterocycloalkyl group having 1 to 3 ring members independently selected from N, NR7, O, S, C═O or S(═O)2 substituted with 0-3 groups independently selected from R13.
Embodiment 70. The compound of any one of Embodiments above, wherein R11 is a 9-12 membered heterocyclyl having 1 to 4 ring members independently selected from N, NR7, O, or S substituted with 0-3 groups independently selected from R13.
Embodiment 71. The compound of any one of Embodiments above, wherein R11 is a 7-8 membered bridged-bicyclic heterocycloalkyl group having 1 to 2 ring members independently selected from N, NR7, O, S, C═O or S(═O)2, substituted with 0-3 groups independently selected from R1.
Embodiment 72. The compound of any one of Embodiments above, wherein R11 is a 6-8 membered fused bicyclic heterocycloalkyl group having 1 to 2 ring members independently selected from N, NR7, O, S, C═O or S(═O)2, substituted with 0-3 groups independently selected from R13;
Embodiment 73. The compound of any one of Embodiments above, wherein R11 is a 5-6 membered heteroaryl having 1 to 3 ring members independently selected from N, NR7, O or S, substituted with 0-3 groups independently selected from R13
Embodiment 74. The compound of any one of Embodiments above, wherein R11 is a 9-10 membered heteroaryl having 1 to 4 ring members independently selected from N, NR7, N+O−, O, or S substituted with 0-3 groups independently selected from R13;
Embodiment 75. The compound of any one of Embodiments above, wherein each R12 is independently selected from —CN, —CD3, —OCD3, —OH, —NR7R8, —NR7C(═O)R8, —NR7S(═O)2R8, —C(═O)NR7R8, —S(═O)2R8, —S(═O)2R10, halo, C1-C8haloalkoxy, C1-C8-alkoxy, C1-C8haloalkyl or —C1-C8alkyl.
Embodiment 76. The compound of any one of Embodiments above, wherein each R12 is independently selected from —CN, —OH, —NR7R8, —NR7C(═O)R8, —NR7S(═O)2R8, —C(═O)NR7R8, —S(═O)2R8, —S(═O)2R10, halo, C1-C8haloalkoxy, C1-C8-alkoxy, C1-C8haloalkyl or —C1-C8alkyl.
Embodiment 77. The compound of any one of Embodiments above, wherein each R13 is independently selected from —C1-C8alkyl, spiro attached C3-C8cycloalkyl, —C1-C8-alkoxy, —OH, halo, —C(═O)R7, —NR7R8, —C(═O)NR7R8, —NR7C(═O)R8, —NR7S(═O)2R8, —S(═O)2R8, NO2, CN or C1-C8haloalkyl.
Embodiment 78. The compound of any one of Embodiments above, wherein each R13 is independently selected from —C1-C8alkyl, —C1-C8-alkoxy, —OH or halo.
Embodiment 79. The compound of any one of Embodiments above, wherein each m is independently selected from 1, 2, 3 or 4.
Embodiment 80. The compound of any one of Embodiments above, wherein each n is independently selected from 0, 1, 2 or 3.
Embodiment 81. The compound of any one of Embodiments above, wherein each p is independently selected from 0, 1, 2 or 3.
Embodiment 82. The compound of any one of Embodiments above, wherein m is independently selected from 1, 2 or 3.
Embodiment 83. The compound of any one of Embodiments above, wherein each n is 0.
Embodiment 84. The compound of any one of Embodiments above, wherein each p is independently selected from 0 and 1.
Embodiment 85. The compound of any one of Embodiments above, wherein each R7 is independently selected from H or —C1-C8alkyl.
Embodiment 86. The compound of any one of Embodiments above, wherein each R7 is H.
Embodiment 87. The compound of any one of Embodiments above, wherein each R7 is —C1-C8alkyl.
Embodiment 88. The compound of any one of Embodiments above, wherein R8 is H or —C1-C8alkyl.
Embodiment 89. The compound of any one of Embodiments above, wherein R8 is H.
The provided compounds may be produced by organic synthesis methods known to one of ordinary skill in the art with reference to the following reaction general synthetic schemes below and in more detail in the Examples.
All starting materials, building blocks, reagents, acids, bases, dehydrating agents, solvents, and catalysts utilized to synthesize the provided compounds are either commercially available or may be produced by organic synthesis methods known to one of ordinary skill in the art (Houben-Weyl 4th Ed. 1952, Methods of Organic Synthesis, Thieme, Volume 21).
Within the scope of this text, only a readily removable group that is not a constituent of the particular desired end product of the provided compounds is designated a “protecting group,” unless the context indicates otherwise. The protection of functional groups by such protecting groups, the protecting groups themselves, and their cleavage reactions are described for example in standard reference works, such as e.g., Science of Synthesis: Houben-Weyl Methods of Molecular Transformation. Georg Thieme Verlag, Stuttgart, Germany. 2005.41627 pp. (URL: http-/www.science-of-synthesis.com (Electronic Version, 48 Volumes)); J. F. W. McOmie, “Protective Groups in Organic Chemistry”, Plenum Press, London and New York 1973, in T. W. Greene and P. G. M. Wuts, “Protective Groups in Organic Synthesis”, Third edition, Wiley, New York 1999, in “The Peptides”; Volume 3 (editors: E. Gross and J. Meienhofer), Academic Press, London and New York 1981, in “Methoden der Organischen Chemie” (Methods of Organic Chemistry), Houben Weyl, 4th edition, Volume 15/1, Georg Thieme Verlag, Stuttgart 1974, in H.-D. Jakubke and H. Jeschkeit, “Aminosauren, Peptide, Proteine” (Amino acids, Peptides, Proteins), Verlag Chemie, Weinheim, Deerfield Beach, and Basel 1982, and in Jochen Lehmann, “Chemie der Kohlenhydrate: Monosaccharide und Derivate” (Chemistry of Carbohydrates: Monosaccharides and Derivatives), Georg Thieme Verlag, Stuttgart 1974. A characteristic of protecting groups is that they may be removed readily (i.e., without the occurrence of undesired secondary reactions) for example by solvolysis, reduction, photolysis or alternatively under physiological conditions (e.g., by enzymatic cleavage).
The disclosure further provides processes to make the compounds of Formula (I) as disclosed herein, and any variant of the present processes, in which an intermediate product obtainable at any stage thereof is used as starting material and the remaining steps are carried out, or in which the starting materials are formed in situ under the reaction conditions, or in which the reaction components are used in the form of their salts or optically pure material.
Provided compounds and intermediates may also be converted into each other according to methods generally known to those skilled in the art.
Methods to synthesize compounds of Formula (I) are depicted in Schemes A-G and are illustrated by the Examples herein. Scheme A depicts a way to prepare compounds wherein R can be a variety of groups and linkages. It begins with by forming a 2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxylate compound, where the 3-carboxylate is protected with a suitably removable protecting group which can be converted to an amide and the 5-position of the ring has a suitable leaving group that can readily be condensed with a suitably substituted phenyl borate to provide either the provided compounds or a compound with a suitable linkage for further manipulation as depicted in Schemes B-G.
Accordingly, schemes B-G depict methods to make compounds of Formula (I) wherein R is variously substituted aminomethyl group, a substituted methoxy group and more specifically a racemic or chiral substituted-1,4-dioxan-2-yl)methoxy group, respectively.
Scheme D depicts methods to make compounds of Formula (I) having a substituted-1,4-dioxan-2-yl)methoxy group.
Scheme E depict methods to make compounds of Formula (I) having a chiral substituted-1,4-dioxan-2-yl))methoxy group.
Scheme F depicts methods to make compounds of Formula (I) having a chiral substituted-1,4-dioxan-2-yl))methoxy group
Scheme G depicts methods to make compounds of Formula (I) wherein the compounds have a chiral substituted-1,4-dioxan-2-yl)methoxy group.
Using these synthesis schemes and the examples provided, the skilled person can prepare the compounds of Formula (I).
Depending on the choice of the starting materials and synthesis procedures, the compounds may be present in the form of one of the possible isomers or as mixtures thereof, for example as pure optical isomers, or as isomer mixtures, such as racemates and diastereoisomer mixtures, depending on the number of asymmetric carbon atoms. The present disclosure includes all such possible isomers, including racemic mixtures, diasteriomeric mixtures and optically pure forms. Optically active (R)- and (S)-isomers may be prepared using chiral synthons or chiral reagents, or resolved using conventional techniques. If the compound contains a double bond, the substituent may be E or Z configuration unless specified. If the compound contains a di-substituted cycloalkyl, the cycloalkyl substituent may have a cis- or trans-configuration, unless otherwise specified. All tautomeric forms are also intended to be included.
Any asymmetric atom (e.g., carbon or the like) of the provided compound(s) may be present in racemic or enantiomerically enriched, for example the (R)-, (S)- or (R,S)-configuration. In certain embodiments, each asymmetric atom has at least 50% enantiomeric excess, at least 60% enantiomeric excess, at least 70% enantiomeric excess, at least 80% enantiomeric excess, at least 90% enantiomeric excess, at least 95% enantiomeric excess, or at least 99% enantiomeric excess of either the (R)- or (S)-configuration; i.e., for optically active compounds, it is often preferred to use one enantiomer to the substantial exclusion of the other enantiomer, so typically an enantiomeric purity of at least 95% is preferred. Substituents at atoms with unsaturated double bonds may, if possible, be present in cis-(Z)- or trans-(E)-form.
Accordingly, as used herein a provided compound may be in the form of one of the possible isomers, rotamers, atropisomers, tautomers or mixtures thereof, for example, as substantially pure geometric (cis or trans) isomers, diastereomers, optical isomers (antipodes), racemates or mixtures thereof. ‘Substantially pure’ or ‘substantially free of other isomers’ as used herein means the product contains less than 5%, and preferably less than 2%, of other isomers relative to the amount of the preferred isomer, by weight.
Resulting mixtures of isomers may typically be separated on the basis of the physicochemical differences of the constituents, into the pure or substantially pure geometric or optical isomers, diastereomers, racemates, for example, by chromatography and/or fractional crystallization.
Racemates of final products or intermediates may typically be resolved into the optical antipodes by known methods, e.g., by separation of the diastereomeric salts thereof, obtained with an optically active acid or base, and liberating the optically active acidic or basic compound. In particular, a basic moiety may thus be employed to resolve the provided compounds into their optical antipodes, e.g., by fractional crystallization of a salt formed with an optically active acid, e.g., tartaric acid, dibenzoyl tartaric acid, diacetyl tartaric acid, di-O,O′-p-toluoyl tartaric acid, mandelic acid, malic acid or camphor-10-sulfonic acid. Racemic products may also be resolved by chiral chromatography, e.g., high pressure liquid chromatography (HPLC) using a chiral stationary phase.
In many cases, the provided compounds are capable of forming acid and/or base salts by virtue of the presence of amino and/or carboxyl groups or groups similar thereto. As used herein, the terms “salt” or“salts” refers to an acid addition or base addition salt of a provided compound. “Salts” include in particular “pharmaceutical acceptable salts”. The term “pharmaceutically acceptable salts” refers to salts that retain the biological effectiveness and properties of the provided compounds and which typically are not biologically or otherwise undesirable.
Pharmaceutically acceptable acid addition salts may be formed with inorganic acids and organic acids, e.g., acetate, aspartate, benzoate, besylate, bromide/hydrobromide, bicarbonate/carbonate, bisulfate/sulfate, camphorsulfonate, chloride/hydrochloride, chlorotheophyllinate, citrate, ethanedisulfonate, fumarate, gluceptate, gluconate, glucuronate, hippurate, hydroiodide/iodide, isethionate, lactate, lactobionate, laurylsulfate, malate, maleate, malonate, mandelate, mesylate, methylsulphate, naphthoate, napsylate, nicotinate, nitrate, octadecanoate, oleate, oxalate, palmitate, pamoate, phosphate/hydrogen phosphate/dihydrogen phosphate, polygalacturonate, propionate, stearate, succinate, sulfosalicylate, tartrate, tosylate or trifluoroacetate salts. Lists of additional suitable salts can be found, e.g., in “Remington's Pharmaceutical Sciences”, 20th ed., Mack Publishing Company, Easton, Pa., (1985); and in “Handbook of Pharmaceutical Salts: Properties, Selection, and Use” by Stahl and Wermuth (Wiley-VCH, Weinheim, Germany, 2002).
Inorganic acids from which salts may be derived include, for example, hydrochloric acid, hydrobromic acid, sulfuric acid, nitric acid, phosphoric acid, or the like.
Organic acids from which salts may be derived include, for example, acetic acid, propionic acid, glycolic acid, oxalic acid, maleic acid, malonic acid, succinic acid, fumaric acid, tartaric acid, citric acid, benzoic acid, mandelic acid, methanesulfonic acid, ethanesulfonic acid, toluenesulfonic acid, sulfosalicylic acid, or the like. Pharmaceutically acceptable base addition salts may be formed with inorganic or organic bases and may have inorganic or organic counterions.
Inorganic counterions for such base salts include, for example, ammonium salts and metals from columns I to XII of the periodic table. In certain embodiments, the counterion is selected from sodium, potassium, ammonium, alkylammonium having one to four C1-C4 alkyl groups, calcium, magnesium, iron, silver, zinc, or copper; particularly suitable salts include ammonium, potassium, sodium, calcium or magnesium salts.
Organic bases from which salts may be derived include, for example, primary, secondary, or tertiary amines, substituted amines including naturally occurring substituted amines, cyclic amines, basic ion exchange resins, and the like. Suitable organic amines include isopropylamine, benzathine, cholinate, diethanolamine, diethylamine, lysine, meglumine, piperazine or tromethamine.
The pharmaceutically acceptable salts of the present disclosure may be synthesized from a basic or acidic moiety, by conventional chemical methods. Generally, such salts may be prepared by reacting free acid forms of these compounds with a stoichiometric amount of the appropriate base (such as Na, Ca, Mg, or K hydroxide, carbonate, bicarbonate or the like), or by reacting free base forms of these compounds with a stoichiometric amount of the appropriate acid. Such reactions are typically carried out in water or in an organic solvent, or in a mixture of the two. Generally, use of non-aqueous media like ether, ethyl acetate, tetrahydrofuran, toluene, chloroform, dichloromethane, methanol, ethanol, isopropanol, or acetonitrile is desirable, where practicable.
Any formula given herein is also intended to represent unlabeled forms (i.e., compounds wherein all atoms are present at natural isotopic abundances, and not isotopically enriched) as well as isotopically enriched or labeled forms of the compounds. Isotopically enriched or labeled compounds have structures depicted by the formulas given herein except that at least one atom of the compound is replaced by an atom having an atomic mass or mass number different from the atomic mass or the atomic mass distribution that occurs naturally. Examples of isotopes that may be incorporated into enriched or labeled compounds of the disclosure include isotopes of hydrogen, carbon, nitrogen, oxygen, phosphorous, fluorine, or chlorine, such as 2H, 3H, 11C, 13C, 14C, 15N, 18F, 31P, 32P, 35S, 36Cl, or 125I. The disclosure includes various isotopically labeled compounds as defined herein, for example those in which radioactive isotopes, such as 3H and 14C, or those in which non-radioactive isotopes, such as 2H and 13C, are present at levels significantly above the natural abundance for these isotopes. These isotopically labeled compounds are useful in metabolic studies (e.g., with 14C), reaction kinetic studies (with, for example 2H or 3H), detection or imaging techniques, such as positron emission tomography (PET) or single-photon emission computed tomography (SPECT) including drug or substrate tissue distribution assays, or in radioactive treatment of patients. In particular, an 18F labeled compound may be particularly desirable for PET or SPECT studies. Isotopically-labeled compounds of formula (I) may generally be prepared by conventional techniques known to those skilled in the art or by processes analogous to those described in the accompanying Examples using an appropriate isotopically-labeled reagent in place of the non-labeled reagent otherwise employed.
Further, substitution with heavier isotopes, particularly deuterium (i.e., 2H or D) may afford certain therapeutic advantages resulting from greater metabolic stability, for example increased in vivo half-life or reduced dosage requirements or an improvement in therapeutic index. The concentration of such a heavier isotope, specifically deuterium, may be defined by the isotopic enrichment factor. The term “isotopic enrichment factor” as used herein means the ratio between the isotopic abundance and the natural abundance of a specified isotope. If a substituent in a provided compound is denoted deuterium, such compound has an isotopic enrichment factor for each designated deuterium atom of at least 3500 (52.5% deuterium incorporation at each designated deuterium atom), at least 4000 (60% deuterium incorporation), at least 4500 (67.5% deuterium incorporation), at least 5000 (75% deuterium incorporation), at least 5500 (82.5% deuterium incorporation), at least 6000 (90% deuterium incorporation), at least 6333.3 (95% deuterium incorporation), at least 6466.7 (97% deuterium incorporation), at least 6600 (99% deuterium incorporation), or at least 6633.3 (99.5% deuterium incorporation).
Furthermore, the provided compounds, including their salts, may also be obtained in the form of their hydrates, or include other solvents used for their crystallization. The provided compounds may inherently or by design form solvates with pharmaceutically acceptable solvents (including water); therefore, the disclosure embraces both solvated and unsolvated forms. The term “solvate” refers to a molecular complex of a provided compound (including pharmaceutically acceptable salts thereof) with one or more solvent molecules. Such solvent molecules are those commonly used in the pharmaceutical art, which are known to be innocuous to the recipient, e.g., water, ethanol, and the like. The term “hydrate” refers to the complex where the solvent molecule is water.
Pharmaceutically acceptable solvates in accordance with the disclosure include those wherein the solvent of crystallization may be isotopically substituted, e.g. D2O, d6-acetone, d6-DMSO, as well as solvates with non-enriched solvents.
The compounds disclosed herein, i.e., compounds of formula (I) that contain groups capable of acting as donors and/or acceptors for hydrogen bonds, may be capable of forming co-crystals with suitable co-crystal formers. These co-crystals may be prepared from compounds of formula (I) by known co-crystal forming procedures. Such procedures include grinding, heating, co-subliming, co-melting, or contacting in solution compounds of formula (I) with the co-crystal former under crystallization conditions and isolating co-crystals thereby formed. Suitable co-crystal formers include those described in WO2004/078163. Hence the disclosure further provides co-crystals comprising a compound of formula (I).
The disclosure further provides additional compounds that, upon conversion within the body a subject, yield any of the compounds discussed above. These additional compounds are prodrug forms of the compounds discussed above. As used herein, the term “prodrug” refers to a precursor compound that, following administration to a subject, releases the biologically active compound in vivo via some chemical or physiological process (e.g., a prodrug on reaching physiological pH or through enzyme action is converted to the biologically active compound). A prodrug itself may either lack or possess the desired biological activity.
In another aspect, the present disclosure provides a pharmaceutical composition comprising a provided compound, or a pharmaceutically acceptable salt thereof, and at least one pharmaceutically acceptable carrier. In some embodiments, the pharmaceutical composition comprises at least two pharmaceutically acceptable excipients or carriers. Pharmaceutically acceptable carriers and other excipients are known to those of skill in the art, and may be selected, for example, from carriers and excipients used in approved (registered) formulated therapeutic agents that are administered via similar routes of administration. The pharmaceutical composition may be formulated for particular routes of administration such as oral administration, parenteral administration, rectal administration, or the like. In addition, the provided pharmaceutical compositions may be made up in a solid form (including without limitation capsules, tablets, pills, granules, powders or suppositories), or in a liquid form (including without limitation solutions, suspensions or emulsions). The pharmaceutical compositions may be subjected to conventional pharmaceutical operations such as sterilization and/or may contain conventional inert diluents, lubricating agents, or buffering agents, as well as adjuvants, such as preservatives, stabilizers, wetting agents, emulsifiers and/or buffers, etc.
In one embodiment, the provided compounds are formulated for oral delivery. Typically, these pharmaceutical compositions are tablets or gelatin capsules comprising the active ingredient (at least one compound of Formula (I)) together with one or more excipients selected from:
Tablets may be either film coated or enteric coated according to methods known in the art.
Suitable compositions for oral administration include an effective amount of a provided compound in the form of tablets, lozenges, aqueous or oily suspensions, dispersible powders or granules, emulsion, hard or soft capsules, or syrups or elixirs. Compositions intended for oral use are prepared according to any method known in the art for the manufacture of pharmaceutical compositions and such compositions may contain one or more agents selected from sweetening agents, flavoring agents, coloring agents and/or preserving agents in order to provide pharmaceutically elegant and palatable preparations. Tablets may contain the active ingredient in admixture with nontoxic pharmaceutically acceptable excipients which are suitable for the manufacture of tablets. These excipients are, for example, inert diluents, such as calcium carbonate, sodium carbonate, lactose, calcium phosphate or sodium phosphate; granulating and disintegrating agents, for example, corn starch, or alginic acid; binding agents, for example, starch, gelatin or acacia; and/or lubricating agents, for example magnesium stearate, stearic acid or talc. The tablets are uncoated or coated by known techniques to delay disintegration and absorption in the gastrointestinal tract and thereby provide a sustained action over a longer period. For example, a time delay material such as glyceryl monostearate or glyceryl distearate may be employed. Formulations for oral use may be presented as hard gelatin capsules wherein the active ingredient is mixed with an inert solid diluent, for example, calcium carbonate, calcium phosphate or kaolin, or as soft gelatin capsules wherein the active ingredient is mixed with water or an oil medium, for example, peanut oil, liquid paraffin or olive oil.
Certain injectable compositions are aqueous isotonic solutions or suspensions, and suppositories are advantageously prepared from fatty emulsions or suspensions. Said compositions may be sterilized and/or contain adjuvants, such as preserving, stabilizing, wetting or emulsifying agents, solution promoters, salts for regulating the osmotic pressure and/or buffers. In addition, they may also contain other therapeutically valuable substances. Said compositions are prepared according to conventional mixing, granulating or coating methods, respectively, and contain about 0.1-75%, or contain about 1-50%, of the active ingredient.
Suitable compositions for transdermal application include an effective amount of a provided compound with a suitable carrier. Carriers suitable for transdermal delivery include absorbable pharmacologically acceptable solvents to assist passage through the skin of the host. For example, transdermal devices are in the form of a bandage comprising a backing member, a reservoir containing the compound optionally with carriers, optionally a rate controlling barrier to deliver the compound of the skin of the host at a controlled and predetermined rate over a prolonged period of time, and means to secure the device to the skin.
Suitable compositions for topical application, e.g., to the skin and eyes, include aqueous solutions, suspensions, ointments, creams, gels or sprayable formulations, e.g., for delivery by aerosol or the like. Such topical delivery systems may pertain to an inhalation or to an intranasal application that may be suitable for use to treat influenza, for example, and may contain solubilizers, stabilizers, tonicity enhancing agents, buffers and/or preservatives. They may be conveniently delivered in the form of a dry powder (either alone, as a mixture, for example a dry blend with lactose, or a mixed component particle, for example with phospholipids) from a dry powder inhaler or an aerosol spray presentation from a pressurized container, pump, spray, atomizer or nebulizer, with or without the use of a suitable propellant.
The present disclosure further provides anhydrous pharmaceutical compositions and dosage forms comprising the provided compounds as active ingredients, since water may facilitate the degradation of certain compounds.
Anhydrous pharmaceutical compositions and dosage forms disclosed herein may be prepared using anhydrous or low moisture containing ingredients and low moisture or low humidity conditions. An anhydrous pharmaceutical composition may be prepared and stored such that its anhydrous nature is maintained. Accordingly, anhydrous compositions are packaged using materials known to prevent exposure to water such that they may be included in suitable formulary kits. Examples of suitable packaging include, but are not limited to, hermetically sealed foils, plastics, unit dose containers (e. g., vials), blister packs, and/or strip packs.
The disclosure further provides pharmaceutical compositions and dosage forms that comprise one or more agents that reduce the rate by which the provided compound as an active ingredient will decompose. Such agents, which are referred to herein as “stabilizers,” include, but are not limited to, antioxidants such as ascorbic acid, pH buffers, and/or salt buffers, etc.
The provided pharmaceutical composition or combination may be in unit dosage containing about 1-1000 mg of active ingredient(s) for a human subject of about 50-70 kg, or about 1-500 mg, or about 1-250 mg, or about 1-150 mg, or about 0.5-100 mg, or about 1-50 mg of active ingredients. The therapeutically effective dosage of a compound, the pharmaceutical composition, or the combinations thereof, is dependent on the species of the subject, the body weight, age and individual condition, the disorder or disease or the severity thereof being treated. A physician, clinician or veterinarian of ordinary skill can readily determine the effective amount of each of the active ingredients necessary to prevent, treat or inhibit the progress of the disorder or disease.
The above-cited dosage properties are demonstrable in in vitro and in vivo tests using advantageously mammals, e.g., mice, rats, dogs, monkeys or isolated organs, tissues and preparations thereof. The provided compounds may be applied in vitro in the form of solutions, e.g., aqueous solutions, and in vivo either enterally, parenterally, advantageously intravenously, e.g., as a suspension or in aqueous solution. The dosage in vitro may range between about 10−3 molar and 10−9 molar concentrations.
The compounds of formula (I), in free form or in salt form, exhibit valuable pharmacological properties, e.g. they inhibit or prevent replication of orthomyxovirus, as indicated by test data provided in the next sections, and are therefore indicated for therapy or for use as research chemicals, e.g. as tool compounds such as for the study of replication of an orthomyxovirus, particularly Influenza A, Influenza B or Influenza C. Accordingly, compounds disclosed herein are useful in the treatment of an infection caused by an orthymyxovirus, particularly Influenza A, Influenza B or Influenza C, especially in human subjects. In some embodiments, the subject to be treated is a human having or at risk of contracting an influenza viral infection, particularly Influenza A, Influenza B or Influenza C. For example, subjects having pre-existing conditions such as asthma or COPD that may be greatly exacerbated by an influenza infection may be treated with the provided methods or compounds before exhibiting symptoms of an influenza infection, particularly Influenza A, Influenza B or Influenza C, especially if they are at risk of contracting influenza due to close proximity to persons such as family members who have or appear to have influenza. In other embodiments, the subject for treatment by the provided methods and compositions is one diagnosed as having symptoms consistent with an influenza infection, particularly Influenza A, Influenza B or Influenza C. In other embodiments, the subject may be a human who has been tested with known diagnostic methods such as a Rapid Influenza Diagnostic Test (RIDT) or Reverse Transcriptase PCT (RT-PCR) methods to detect the presence of influenza virus, and found to be infected with influenza, regardless of the presence of typical influenza symptoms.
All methods described herein may be performed in any suitable order unless otherwise indicated herein or otherwise clearly contradicted by context. The use of any and all examples, or exemplary language (e.g. “such as”) provided herein is intended merely to better illuminate the disclosure and does not pose a limitation on the scope of the embodiments otherwise claimed.
In another aspect, the disclosure provides a method to treat a subject infected with influenza A, B, or C, which comprises administering to a subject in need of such treatment an effective amount of a compound of Formula (I) or any subgenus or species thereof as described herein, or a pharmaceutical composition comprising such compound or composition. The subject may be a mammal, and is preferably a human, although the provided compounds and methods are suitable for treatment of other species that contract Influenza A, Influenza B, or influenza C, or other orthomyxoviruses. The disclosure includes compounds of Formula (I) and the subgenera of Formula (I) described herein, and includes all stereoisomers (including diastereoisomers and enantiomers) except where a specific isomer is expressly described, as well as tautomers and isotopically enriched versions thereof (including deuterium substitutions) as well as pharmaceutically acceptable salts of these compounds.
As a further embodiment, the present disclosure provides the use of a compound of formula (I) or any of the embodiments within the scope of Formula (I) as described herein, in therapy. In particular, the compounds are suitable for use to treat a subject having or at particularly high risk for an orthomyxovirus viral infection, especially Influenza A, Influenza B, or Influenza C.
In another embodiment, the disclosure provides a method of treating a disease which is caused by an orthomyxovirus, comprising administration of a therapeutically effective amount of a compound of formula (I) or any of the embodiments within the scope of Formula (I) as described herein to a subject in need of such treatment. In some embodiments, the compound of formula (I) is administered orally. In a further embodiment, the disease is selected from Influenza A, Influenza B, and Influenza C. The method typically comprises administering an effective amount of a compound as described herein, or a pharmaceutical composition comprising an effective amount of such compound, to a subject in need of such treatment. The compound may be administered by any suitable method such as those described herein, and the administration may be repeated at intervals which may be selected by a treating physician. In some embodiments, the compound or pharmaceutical composition is administered orally.
Thus, as a further embodiment, the present disclosure provides the use of a compound of formula (I) or any of the embodiments of such compounds described herein for the manufacture of a medicament. In a particular embodiment, the medicament is for treatment of an orthomyxovirus infection, especially Influenza A, Influenza B, or Influenza C.
A further embodiment of the present disclosure provides the use of a compound of formula (I) or any of the embodiments of such compounds described herein for the manufacture of a medicament for the treatingment of influenza. A further embodiment of the present disclosure provides the use of a compound of formula (I) or any of the embodiments of such compounds described herein for the manufacture of a medicament for the treatment of Influenza A, Influenza B, or Influenza C.
In addition, the disclosure provides the use of a compound of formula (I) for treating a viral infection caused by an orthomyxovirus, particularly influenza, which may be Influenza A, Influenza B or Influenza C. In a further embodiment the disclosure provides the use of a compound of formula (I) for treating influenza. In a further embodiment the disclosure provides the use of a compound of formula (I) for treating Influenza A, Influenza B, or Influenza C.
The compound disclosed herein may be administered either simultaneously with, or before or after, one or more therapeutic co-agent(s). The provided compound may be administered separately, by the same or different route of administration, or together in the same pharmaceutical composition as the co-agent(s). Suitable co-agents for use with the provided compounds include antivirals active on influenza viruses, such as neuraminidase inhibitors including oseltamivir, peramivir, zanamivir and laninamivir, laninamivir octanoate, and adamantanes such as amantadine and rimantadine. Additional co-agents for use in these methods include an M2 protein inhibitor, a polymerase inhibitor, a PB2 inhibitor, favipiravir, fludase, ADS-8902, beraprost, Neugene®, ribavirin, CAS Reg. No. 1422050-75-6, VX-787, Flu Mist Quadrivalent®, Fluarix® Quadrivalent, Fluzone® Quadrivalent, Flucelvax® or FluBlok®.
In one embodiment, the disclosure provides a product comprising a compound of formula (I) and at least one other therapeutic co-agent as a combined preparation for simultaneous, separate or sequential use in therapy. In one embodiment, the therapy is the treatment of a viral infection caused by an orthomyxovirus, particularly Influenza A, Influenza B or Influenza C. Products provided as a combined preparation include a composition comprising a compound of formula (I) and at least one of the other therapeutic co-agent(s) together in the same pharmaceutical composition, or the compound of formula (I) and at least one other therapeutic co-agent(s) in separate form, e.g. in the form of a kit for use to treat a subject by the methods described herein.
In one embodiment, the disclosure provides a pharmaceutical composition comprising a compound of formula (I) and another therapeutic co-agent(s). Suitable co-agents include antivirals active on influenza viruses, such as neuraminidase inhibitors including oseltamivir, peramivir, zanamivir and laninamivir, and adamantanes such as amantadine and rimantadine. Optionally, the pharmaceutical composition may comprise a pharmaceutically acceptable carrier, as described above.
In one embodiment, the disclosure provides a kit comprising two or more separate pharmaceutical compositions, at least one of which contains a compound of formula (I). The other pharmaceutical composition may contain one of the suitable co-agents. In one embodiment, the kit comprises means for separately retaining said compositions, such as a container, divided bottle, or divided foil packet. An example of such a kit is a blister pack, as typically used for the packaging of tablets, capsules and the like.
The kit disclosed herein may be used for administering different dosage forms, for example, oral and parenteral, for administering the separate compositions at different dosage intervals, or for titrating the separate compositions against one another. To assist compliance, the provided kit typically comprises directions for administration.
In the combination therapies disclosed herein, the provided compound and the therapeutic co-agent may be manufactured and/or formulated by the same or different manufacturers. Moreover, the provided compound and the therapeutic co-agent may be brought together into a combination therapy: (i) prior to release of the combination product to physicians (e.g. in the case of a kit comprising the provided compound and the other therapeutic agent); (ii) by the physician themselves (or under the guidance of the physician) shortly before administration; (iii) in the patient themselves, e.g. during sequential administration of the provided compound and the therapeutic co-agent.
Accordingly, the disclosure provides the use of a compound of formula (I) for treating a viral infection caused by an orthomyxovirus, particularly influenza, which may be Influenza A, Influenza B or Influenza C, wherein the medicament is prepared for administration with a therapeutic co-agent. Typically in the methods of using the provided compounds, the serotype of influenza is not identified before treatment. The disclosure also provides the use of therapeutic co-agent for treating a disease or condition, wherein the medicament is administered with a compound of formula (I).
The disclosure also provides a compound of formula (I) for use in a method of treating a viral infection caused by an orthomyxovirus, particularly Influenza A, Influenza B or Influenza C, wherein the compound of formula (I) is prepared for administration with a therapeutic co-agent. The disclosure also provides another therapeutic co-agent for use in a method of treating a viral infection caused by an orthomyxovirus, particularly influenza, e.g., Influenza A, Influenza B or Influenza C, wherein the therapeutic co-agent is prepared for administration with a compound of formula (I). The disclosure also provides a compound of formula (I) for use in a method of treating a viral infection caused by an orthomyxovirus, particularly Influenza A, Influenza B or Influenza C, wherein the compound of formula (I) is administered with a therapeutic co-agent. The disclosure also provides a therapeutic co-agent for use in a method of treating a viral infection caused by an orthomyxovirus, particularly Influenza A, Influenza B or Influenza C, wherein the a therapeutic co-agent is administered with a compound of formula (I).
The disclosure also provides the use of a compound of formula (I) for treating a viral infection caused by an orthomyxovirus, particularly influenza, e.g., Influenza A, Influenza B or Influenza C, wherein the patient has previously (e.g. within 24 hours) been treated with another therapeutic agent. The disclosure also provides the use of another therapeutic agent for treating a viral infection caused by an orthomyxovirus, particularly Influenza A, Influenza B or Influenza C, wherein the patient has previously (e.g. within 24 hours) been treated with a compound of formula (I).
In one embodiment, the therapeutic co-agent is selected from antivirals purported to be useful for treating infections caused by influenza viruses, such as neuraminidase inhibitors including oseltamivir, peramivir, zanamivir and/or laninamivir, and adamantanes such as amantadine and/or rimantadine.
The following examples are intended for illustrative purposes only and are not to be construed as limiting the scope of the embodiments. Temperatures are given in degrees Celsius. If not mentioned otherwise, all evaporations are performed under reduced pressure, typically between about 15 mm Hg and 100 mm Hg (about 20-133 mbar). The structure of final products, intermediates and starting materials is confirmed by standard analytical methods, e.g., microanalysis and spectroscopic characteristics, e.g., MS, IR and NMR. Abbreviations used are those conventional in the art.
All starting materials, building blocks, reagents, acids, bases, dehydrating agents, solvents, and catalysts utilized to synthesize the provided compounds are either commercially available or may be produced by organic synthesis methods known to one of ordinary skill in the art (Houben-Weyl 4th Ed. 1952, Methods of Organic Synthesis, Thieme, Volume 21). Further, the provided compounds may be produced by organic synthesis methods known to one of ordinary skill in the art in view of the following examples.
Step 1: To a solution of ethoxyethene (100 g, 1.389 mol) in DCM (1.0 L) was added 2,2,2-trifluoroacetic anhydride (306 g, 1.457 mol) and DMAP (10 g, 81.9 mmol) in turns at −10° C. Then the mixture was stirred at 25° C. for 16 hrs. The mixture was concentrated under vacuum. The residue was purified by column (PE:EA=1:0˜30:1) to give (E)-4-ethoxy-1,1,1-trifluorobut-3-en-2-one. 1H NMR: (CDCl3, 400 MHz), δ=7.92 (d, J=12.30 Hz, 1H) 5.87 (d, J=12.30 Hz, 1H) 4.12-4.17 (q, 2H) 1.43 (t, J=7.09 Hz, 3H).
Step 2: To a solution of (E)-4-ethoxy-1,1,1-trifluorobut-3-en-2-one (step 1) (50 g, 298 mmol) and NaOEt (40 g, 596 mmol) in EtOH (500 mL) was added ethyl 3-amino-3-oxopropanoate (43 g, 358 mmol) at 25° C. Then the mixture was stirred at 80° C. for 16 hrs. The reaction mixture was poured into water (1.0 L) and then extracted with EA (500 mL×2). The combined organic layers were dried over anhydrous Na2SO4, filtered and concentrated to give crude product. The residue was purified by column (PE:EA=10:1˜1:1) to give ethyl 2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxylate. 1H NMR (400 MHz, CHLOROFORM-d) δ=8.31 (d, J=6.8 Hz, 1H), 7.23 (d, J=6.8 Hz, 1H), 4.42 (m, 2H), 1.36 (t, J=6.4 Hz, 3H); LCMS: Rt 0.702 min, MS m/z 236.0 (M+H).
Step 3: To a solution of ethyl 2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxylate (10 g, 42.6 mmol) in DMF (50 ml) was added NBS (9.1 g, 51.1 mmol) at 25° C. The mixture was stirred at 25° C. for 1 h. The mixture was washed with H2O (100 mL) and extracted with EA (100 mL×2). The combined organic layers were dried over anhydrous Na2SO4, filtered and concentrated to dryness. The residue was purified by column (PE/EA=10/1) to give ethyl 5-bromo-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxylate. 1H NMR (400 MHz, DMSO-d6) δ=8.43 (s, 1H), 4.33-4.28 (m, 2H), 1.30 (t, J=8 Hz, 3H) LCMS: Rt 0.864 min, MS m/z 314.0 (M+H).
Step 4: A solution of ethyl 5-bromo-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxylate (5 g, 16.0 mmol) in NH3/MeOH (50 ml) was stirred in an autoclave at 60° C. for 16 hrs under 0.8 MPa. The reaction mixture was concentrated to give 5-bromo-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide, which was used for next step without further purification. 1H NMR: (DMSO, 400 MHz), δ=10.41 (s, 1H), 8.09 (s, 1H), 7.22 (s, 2H); LCMS: Rt 0.665 min, MS m/z 286.9 (M+H).
Step 5: 5-bromo-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (100 mg, 0.35 mmol, (4-(morpholinomethyl)phenyl)boronic acid (117 mg, 0.529 mmol) and PdCl2(dppf)-CH2Cl2 adduct (28.7 mg, 0.035 mmol) were added to a microwave vial with a stir bar and then purged with nitrogen. 1,4-dioxane (1170 μl) was then added, followed by sodium carbonate (2.0 M in water) (877 μl, 1.754 mmol). The vial was sealed and heated in the microwave at 100° C. for 60 min. The mixture was poured into water (5 mL) and extracted with EA (5 mL×2). The combined organic layers were dried over anhydrous Na2SO4, filtered, and concentrated to dryness. The residue was purified by Prep-HPLC under acidic conditions (MeCN/water with a TFA) to give 5-(4-(morpholinomethyl)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (1). 1H NMR: (400 MHz, DMSO-d6) δ 8.58 (s, 1H), 8.28 (s, 1H), 8.11 (s, 1H), 7.44-7.36 (m, 2H), 7.35-7.27 (m, 2H), 3.60 (t, J=4.7 Hz, 4H), 2.40 (t, J=4.7 Hz, 4H). LCMS: Rt=0.43 min, m/z=382.3 (M+H).
5-(4-(hydroxymethyl)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (2) was made using a procedure similar to that used to make 5-(4-(morpholinomethyl)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (1), except (4-(morpholinomethyl)phenyl)boronic acid was replaced with (4-(hydroxymethyl)phenyl)boronic acid. 1H NMR: (400 MHz, DMSO-d6) δ 9.55 (bs, 1H), 8.06 (s, 1H), 7.62 (t, J=9.8 Hz, 1H), 7.43-7.30 (m, 2H), 7.24 (d, J=7.9 Hz, 2H), 7.17-6.92 (m, 1H), 5.22 (t, J=6.0 Hz, 1H), 4.54 (d, J=4.8 Hz, 2H). LCMS: Rt=0.50 min, m/z=313.1 (M+H).
5-(4-hydroxyphenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (3) was made using a procedure similar to that used to make 5-(4-(morpholinomethyl)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (1), except (4-(morpholinomethyl)phenyl)boronic acid was replaced with (4-hydroxyphenyl)boronic acid. 1H NMR: (400 MHz, DMSO-d6) δ 9.83 (s, 1H), 9.03-8.69 (m, 1H), 8.24 (s, 1H), 8.10-7.97 (m, 1H), 7.12 (d, J=8.4 Hz, 2H), 6.86 (d, J=8.4 Hz, 1H). LCMS: Rt=0.68 min, m/z=299.0 (M+H).
5-(4-(benzyloxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (4) was made using a procedure similar to that used to make 5-(4-(morpholinomethyl)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (1), except (4-(morpholinomethyl)phenyl)boronic acid was replaced with (4-(benzyloxy)phenyl)boronic acid. 1H NMR: (400 MHz, DMSO-d6) δ 8.59 (s, 1H), 8.43-8.41 (d, J=8, 1H), 8.25 (s, 1H), 8.11 (s, 2H), 8.50-8.47 (m, 3H), 7.43-7.41 (m, 2H), 7.39-7.34 (m, 1H), 7.28-7.26 (m, 2H), 7.10-7.08 (m, 2H), 5.10 (s, 2H). LCMS: Rt=0.86 min, m/z=389.2 (M+H).
2-oxo-5-(4-(pyrrolidin-1-ylmethyl)phenyl)-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (5) was made using a procedure similar to that used to make 5-(4-(morpholinomethyl)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (1), except (4-(morpholinomethyl)phenyl)boronic acid was replaced with (4-(pyrrolidin-1-ylmethyl)phenyl)boronic acid. 1H NMR: (400 MHz, DMSO-d6) δ 9.86 (br, s, 1H), 7.99 (s, 1H), 7.45 (d, J=8.0 2H), 7.28 (d, J=8.0 2H), 4.03 (s, 2H), 2.89 (m, 4H), 1.84 (m, 4H). LCMS: Rt=0.53 min, m/z=366.2 (M+H).
2-oxo-5-(4-phenoxyphenyl)-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (6) was made using a procedure similar to that used to make 5-(4-(morpholinomethyl)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (1), except (4-(morpholinomethyl)phenyl)boronic acid was replaced with (4-phenoxyphenyl)boronic acid. 1H NMR: (400 MHz, DMSO-d6) δ 8.46 (s, 1H), 8.30 (s, 1H), 8.15 (s, 1H), 7.42 (d, J=8.0 Hz, 2H), 7.36 (d, J=8.0 Hz, 2H), 7.19 (t, J=7.2 Hz, 1H), 7.07 (d, J=8.4 Hz, 4H). LCMS: Rt=0.85 min, m/z=375.2 (M+H).
5-(3-aminophenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (7) was made using a procedure similar to that used to make 5-(4-(morpholinomethyl)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (1), except (4-(morpholinomethyl)phenyl)boronic acid was replaced with (3-aminophenyl)boronic acid. 1H NMR: (400 MHz, DMSO-d6) δ 8.17 (s, 1H), 7.05 (t, J=7.8 Hz, 1H), 6.58 (d, J=7.9 Hz, 1H), 6.51-6.46 (m, 1H), 6.45-6.38 (m, 1H). LCMS: Rt=0.61 min, m/z=298.1 (M+H).
5-(3-cyanophenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (8) was made using a procedure similar to that used to make 5-(4-(morpholinomethyl)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (1), except (4-(morpholinomethyl)phenyl)boronic acid was replaced with (3-cyanophenyl)boronic acid. 1H NMR: (400 MHz, DMSO-d6) δ 13.93-13.72 (m, 1H), 8.51-8.40 (m, 1H), 8.33 (s, 1H), 8.27-8.21 (m, 1H), 7.99-7.88 (m, 2H), 7.72 (s, 2H). LCMS: Rt=0.68 min, m/z=308.2 (M+H).
5-(3-hydroxyphenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (9) was made using a procedure similar to that used to make 5-(4-(morpholinomethyl)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (1), except (4-(morpholinomethyl)phenyl)boronic acid was replaced with (3-hydroxyphenyl)boronic acid. 1H NMR: (400 MHz, DMSO-d6) δ 13.81-13.62 (m, 1H), 9.66 (s, 1H), 8.48 (s, 1H), 8.29 (s, 1H), 8.20 (s, 1H), 7.26 (t, J=7.8 Hz, 1H), 6.85 (s, 1H), 6.79-6.66 (m, 2H). LCMS: Rt=0.59 min, m/z=299.2 (M+H).
5-(3-formamidophenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (10) was made using a procedure similar to that used to make 5-(4-(morpholinomethyl)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (1), except (4-(morpholinomethyl)phenyl)boronic acid was replaced with (3-formamidophenyl)boronic acid. 1H NMR: (400 MHz, DMSO-d6) δ 10.44-10.33 (m, 1H), 8.57-8.38 (m, 2H), 8.31 (m, 2H), 8.21 (s., 1H), 7.64 (s, 2H), 7.49-7.36 (m, 1H), 7.10-7.04 (m, 1H). LCMS: Rt=0.58 min, m/z=326.0 (M+H).
5-(4-(methylsulfonamido)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (11) was made using a procedure similar to that used to make 5-(4-(morpholinomethyl)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (1), except (4-(morpholinomethyl)phenyl)boronic acid was replaced with (4-(methylsulfonamido)phenyl)boronic acid. LCMS: Rt=0.61 min, m/z=376.1 (M+H).
5-(4-(difluoromethoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (12) was made using a procedure similar to that used to make 5-(4-(morpholinomethyl)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (1), except (4-(morpholinomethyl)phenyl)boronic acid was replaced with (4-(difluoromethoxy)phenyl)boronic acid. LCMS: Rt=0.77 min, m/z=349.0 (M+H).
5-(4-(methoxymethoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (13) was made using a procedure similar to that used to make 5-(4-(morpholinomethyl)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (1), except (4-(morpholinomethyl)phenyl)boronic acid was replaced with (4-(methoxymethoxy)phenyl)boronic acid. LCMS: Rt=2.94 min, m/z=343.0 (M+H).
5-(3-fluoro-4-methoxyphenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (14) was made using a procedure similar to that used to make 5-(4-(morpholinomethyl)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (1), except (4-(morpholinomethyl)phenyl)boronic acid was replaced with (3-fluoro-4-methoxyphenyl)boronic acid. LCMS: Rt=2.02 min, m/z=329.0 (M−H).
5-(4-(methoxymethyl)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (15) was made using a procedure similar to that used to make 5-(4-(morpholinomethyl)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (1), except (4-(morpholinomethyl)phenyl)boronic acid was replaced with (4-(methoxymethyl)phenyl)boronic acid. LCMS: Rt=2.91 min, m/z=327.0 (M+H).
2-oxo-5-phenyl-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (16) was made using a procedure similar to that used to make 5-(4-(morpholinomethyl)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (1), except (4-(morpholinomethyl)phenyl)boronic acid was replaced with phenylboronic acid. LCMS: Rt=0.96 min, m/z=283.5 (M+H).
5-(4-isopropoxyphenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (17) was made using a procedure similar to that used to make 5-(4-(morpholinomethyl)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (1), except (4-(morpholinomethyl)phenyl)boronic acid was replaced with (4-isopropoxyphenyl)boronic acid. LCMS: Rt=3.20 min, m/z=339.0 (M−H).
5-(3-chloro-4-methoxyphenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (18) was made using a procedure similar to that used to make 5-(4-(morpholinomethyl)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (1), except (4-(morpholinomethyl)phenyl)boronic acid was replaced with (3-chloro-4-methoxyphenyl)boronic acid. LCMS: Rt=2.08 min, m/z=345.0 (M−H).
5-(4-(methylcarbamoyl)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (19) was made using a procedure similar to that used to make 5-(4-(morpholinomethyl)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (1), except (4-(morpholinomethyl)phenyl)boronic acid was replaced with (4-(methylcarbamoyl)phenyl)boronic acid. LCMS: Rt=2.40 min, m/z=340.0 (M+H).
5-(4-(cyanomethyl)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (20) was made using a procedure similar to that used to make 5-(4-(morpholinomethyl)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (1), except (4-(morpholinomethyl)phenyl)boronic acid was replaced with (4-(cyanomethyl)phenyl)boronic acid. LCMS: Rt=2.80 min, m/z=322.0 (M+H).
5-(4-(3-(dimethylamino)propoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (21) was made using a procedure similar to that used to make 5-(4-(morpholinomethyl)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (1), except (4-(morpholinomethyl)phenyl)boronic acid was replaced with (4-(3-(dimethylamino)propoxy)phenyl)boronic acid. LCMS: Rt=2.13 min, m/z=384.0 (M+H).
5-(3-(cyanomethyl)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (22) was made using a procedure similar to that used to make 5-(4-(morpholinomethyl)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (1), except (4-(morpholinomethyl)phenyl)boronic acid was replaced with (3-(cyanomethyl)phenyl)boronic acid. LCMS: Rt=2.77 min, m/z=320.0 (M−H).
5-(3-(morpholinomethyl)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (23) was made using a procedure similar to that used to make 5-(4-(morpholinomethyl)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (1), except (4-(morpholinomethyl)phenyl)boronic acid was replaced with (3-(morpholinomethyl)phenyl)boronic acid. LCMS: Rt=1.95 min, m/z=380.0 (M−H).
2-oxo-5-(m-tolyl)-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (24) was made using a procedure similar to that used to make 5-(4-(morpholinomethyl)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (1), except (4-(morpholinomethyl)phenyl)boronic acid was replaced with m-tolylboronic acid. LCMS: Rt=3.04 min, m/z=295.2 (M−H).
5-(3-(hydroxymethyl)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (25) was made using a procedure similar to that used to make 5-(4-(morpholinomethyl)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (1), except (4-(morpholinomethyl)phenyl)boronic acid was replaced with (3-(hydroxymethyl)phenyl)boronic acid. LCMS: Rt=1.17 min, m/z=311.0 (M−H).
2-oxo-5-(p-tolyl)-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (26) was made using a procedure similar to that used to make 5-(4-(morpholinomethyl)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (1), except (4-(morpholinomethyl)phenyl)boronic acid was replaced with p-tolylboronic acid. LCMS: Rt=3.02 min, m/z=295.0 (M−H).
Step 1: To a solution of 5-bromo-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (see Example 1) (3.0 g, 10.5 mmol) in dioxane (10 mL) and H2O (2 mL) was added 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzaldehyde (2.9 g, 12.6 mmol), Na2CO3 (2.2 g, 21.0 mmol) and Pd(dppf)Cl2—CH2Cl2 adduct (0.4 g, 0.5 mmol) at 25° C. under N2. The mixture was stirred at 100° C. for 12 hrs. The mixture was washed with H2O (10 mL) and extracted with EA (10 mL×2). The combined organic layers were dried over anhydrous Na2SO4, filtered and concentrated to dryness. The residue was purified by Prep-HPLC under the acidic conditions (MeCN/water with TFA) to give 5-(4-formylphenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide. 1H NMR: (400 MHz, DMSO) δ=10.07 (s, 1H), 8.43 (br, s, 1H), 8.32 (s, 1H), 8.20 (br, s, 1H), 8.01 (d, J=8.0 Hz, 2H), 7.61 (d, J=8.0 Hz, 2H). LCMS: Rt=0.66 min, m/z=311.0 (M+H).
Step 2: To a solution of 5-(4-formylphenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (200 mg, 0.64 mmol) in MeOH (5 mL) was added 3-methylmorpholine (130 mg, 1.29 mmol) and CH3COOH (40 mg, 0.32 mmol) at 25° C. The mixture was stirred at 25° C. for 1 hr. Then NaBH3CN (120 mg, 1.92 mmol) was added at 0° C. The mixture was stirred at 25° C. for 11 hrs. The mixture was washed with H2O (10 mL) and extracted with EA (10 mL×2). The combined organic layers were dried over anhydrous Na2SO4, filtered and concentrated. The residue was purified by Prep-HPLC under basic conditions (MeCN/water with NH3·H2O) added “basic” method) to give 5-(4-((3-methylmorpholino)methyl)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (27). 1H NMR (400 MHz, DMSO) δ=7.88 (s, 1H), 7.30 (d, J=8.0, 2H), 7.18 (d, J=8.0, 2H), 4.02 (d, J=13.2, 1H), 3.64 (m, 2H), 3.61-3.60 (m, 2H), 3.33 (s, 1H), 3.16-3.12 (m, 2H), 2.49-2.48 (m, 2H). 2.10-2.07 (m, 1H), 1.02-1.00 (d, J=6.4, 3H). LCMS: Rt=0.92 min, m/z=396.1 (M+H).
2-oxo-5-(4-(thiomorpholinomethyl)phenyl)-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (28) was made using a procedure similar to that used to make 5-(4-((3-methylmorpholino)methyl)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (27), except 3-methylmorpholine was replaced with thiomorpholine. 1H NMR (400 MHz, DMSO) δ=8.01 (s, 1H), 7.46 (br s, 1H), 7.32 (d, J=8.0 Hz, 2H), 7.22 (d, J=8.0 Hz, 2H), 3.53 (s, 2H), 2.63-2.61 (m, 8H), LCMS: Rt=0.99 min, m/z=398.1 (M+H).
5-(4-((2-methylmorpholino)methyl)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (29) was made using a procedure similar to that used to make 5-(4-((3-methylmorpholino)methyl)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (27), except 3-methylmorpholine was replaced with 2-methylmorpholine. 1H NMR (400 MHz, DMSO) δ=7.86 (s, 1H), 7.29 (d, J=8.0, 2H), 7.18 (d, J=8.0, 2H), 3.73 (m, 1H), 3.51 (m, 2H), 3.46 (s, 2H), 2.70 (m, 1H), 2.67 (m, 1H), 2.49-2.48 (m, 1H), 2.02-2.01 (m, 1H), 1.71 (t, J=10.8, 1H), 1.02-1.01 (d, J=6.0, 3H). LCMS: Rt=0.78 min, m/z=396.1 (M+H).
5-(4-((7-oxa-4-azaspiro[2.5]octan-4-yl)methyl)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (30) was made using a procedure similar to that used to make 5-(4-((3-methylmorpholino)methyl)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (27), except 3-methylmorpholine was replaced with 7-oxa-4-azaspiro[2.5]octane. 1H NMR (400 MHz, DMSO) δ=9.15 (br. s, 1H), 8.19 (s, 1H), 8.14 (s, 1H), 7.84 (s, 1H), 7.33 (d, J=8.0 Hz, 2H), 7.23 (d, J=8.0 Hz, 2H), 3.84 (s, 2H), 3.67-3.65 (m, 2H), 3.55 (br. s., 2H), 2.69-2.67 (m, 2H), 0.69-0.67 (m, 2H), 0.50-0.48 (m, 2H). LCMS: Rt=0.65 min, m/z=408.1 (M+H).
5-(4-(((1R,5S)-8-oxa-3-azabicyclo[3.2.1]octan-3-yl)methyl)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (31) was made using a procedure similar to that used to make 5-(4-((3-methylmorpholino)methyl)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (27), except 3-methylmorpholine was replaced with (1R,5S)-8-oxa-3-azabicyclo[3.2.1]octane. 1H NMR (400 MHz, DMSO) δ=7.82 (s, 1H), 7.28 (d, J=8.0 Hz, 2H), 7.16 (d, J=8.0 Hz, 2H), 7.05-6.94 (m, 1H), 4.21 (d, J=2.0 Hz, 2H), 3.46 (s, 2H), 2.54 (s, 1H), 2.20 (d, J=9.4 Hz, 2H), 1.90 (d, J=6.4 Hz, 2H), 1.76-1.69 (m, 2H). LCMS: Rt=1.09 min, m/z=408.0 (M+H).
2-oxo-5-(4-((3-(pyridin-3-yl)morpholino)methyl)phenyl)-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (32) was made using a procedure similar to that used to make 5-(4-((3-methylmorpholino)methyl)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (27), except 3-methylmorpholine was replaced with 3-(pyridin-3-yl)morpholine. 1H NMR (400 MHz, DMSO) δ=8.71 (s, 1H), 8.54-8.53 (m, 1H), 8.16 (s, 1H), 7.96-7.94 (m, 1H), 7.45-7.42 (m, 1H), 7.33-7.24 (m, 4H), 3.84-3.82 (m, 1H), 3.73-3.71 (m, 1H), 3.65-3.56 (m, 2H), 3.54-3.48 (m, 1H), 3.37 (br. s., 1H), 3.07-3.00 (m, 1H), 2.74-2.66 (m, 1H), 2.33-2.26 (m, 1H). LCMS: Rt=0.70 min, m/z=459.1 (M+H).
5-(4-(1-morpholinoethyl)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (33) was made using a procedure similar to that used to make 5-(4-((3-methylmorpholino)methyl)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (27), except 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzaldehyde was replaced with 1-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)ethan-1-one, and 3-methylmorpholine was replaced with morpholine. 1H NMR (400 MHz, DMSO) δ=9.15 (s, 1H), 8.15 (s, 1H), 7.82 (s, 1H), 7.35 (d, J=8.0 Hz, 1H), 7.25 (d, J=8.0 Hz, 1H), 3.75-3.55 (m, 5H), 2.40-2.30 (m, 2H), 2.29-2.26 (m., 2H), 1.31-1.25 (m, 3H). LCMS: Rt=0.53 min, m/z=396.3 (M+H).
5-(4-((1,4-oxazepan-4-yl)methyl)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (34) was made using a procedure similar to that used to make 5-(4-((3-methylmorpholino)methyl)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (27), except 3-methylmorpholine was replaced with 1,4-oxazepane. 1H NMR (400 MHz, DMSO) δ=10.24 (br, s, 1H), 7.92 (s, 1H), 7.34 (d, J=8.0 Hz, 2H), 7.25 (br. s., 1H), 7.20 (d, J=8.0 Hz, 2H), 3.71 (m, 2H), 3.67 (s, 2H), 3.63-3.61 (m, 2H), 2.66-2.62 (m, 4H), 1.84-1.81 (m, 2H). LCMS: Rt=1.00 min, m/z=396.3 (M+H).
5-(4-(((2S,6R)-2,6-dimethylmorpholino)methyl)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (35) was made using a procedure similar to that used to make 5-(4-((3-methylmorpholino)methyl)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (27), except 3-methylmorpholine was replaced with (2S,6R)-2,6-dimethylmorpholine. 1H NMR (400 MHz, DMSO) δ=8.82-8.68 (m, 1H), 8.26 (s, 1H), 8.05 (s, 1H), 7.43-7.36 (m, 2H), 7.34-7.24 (m, 2H), 3.61-3.59 (m, 2H), 3.53 (s, 2H), 2.71 (d, J=10.4 Hz, 2H), 1.71 (t, J=10.7 Hz, 2H), 1.04 (d, J=6.3 Hz, 6H). LCMS: Rt=0.98 min, m/z=410.2 (M+H).
5-(3-fluoro-4-(morpholinomethyl)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (36) was made using a procedure similar to that used to make 5-(4-((3-methylmorpholino)methyl)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (27), except 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzaldehyde was replaced with 2-fluoro-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzaldehyde, and 3-methylmorpholine was replaced with morpholine. 1H NMR (400 MHz, DMSO) δ=8.39 (s, 1H), 8.30 (s, 1H), 8.18 (s, 1H), 7.68 (t, J=8.0 Hz, 1H), 7.42 (d, J=8.0 Hz, 1H), 7.33 (d, J=8.0 Hz, 1H), 4.40 (s., 2H), 3.79 (m., 5H), 3.19 (bs., 3H). LCMS: Rt=0.59 min, m/z=400.3 (M+H).
5-(4-(1-hydroxyethyl)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (37) was made using a procedure similar to that used in step 1 in the procedure to make 5-(4-((3-methylmorpholino)methyl)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (27), except 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzaldehyde was replaced with 1-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)ethan-1-ol. 1H NMR (400 MHz, DMSO) δ=8.47 (s, 1H), 8.30 (s, 1H), 8.18 (s, 1H), 7.44 (d, J=8.0 Hz, 2H), 7.31 (d, J=8.0 Hz, 2H), 5.26 (s, 1H), 4.79 (d, J=6.4 Hz, 1H), 1.37 (d, J=6.4 Hz, 3H). LCMS: Rt=0.64 min, m/z=327.0 (M+H).
5-(4-((3-methoxyazetidin-1-yl)methyl)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (38) was made using a procedure similar to that used to make 5-(4-((3-methylmorpholino)methyl)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (27), except 3-methylmorpholine was replaced with 3-methoxyazetidine. 1H NMR (400 MHz, DMSO) δ=9.42 (s, 1H), 8.09 (s, 1H), 7.69 (s, 1H), 7.39 (d, J=7.8 Hz, 2H), 7.27 (d, J=7.8 Hz, 2H), 4.12-4.06 (m, 1H), 3.90 (s, 2H), 3.77 (s, 2H), 3.28-3.24 (m, 2H), 3.20-3.17. LCMS: Rt=0.48 min, m/z=382.1 (M+H).
5-(4-((2,2-dimethylmorpholino)methyl)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (39) was made using a procedure similar to that used to make 5-(4-((3-methylmorpholino)methyl)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (27), except 3-methylmorpholine was replaced with 2,2-dimethylmorpholine. 1H NMR (400 MHz, DMSO) δ=8.43 (s, 1H), 8.31 (s, 1H), 8.18 (s, 1H), 7.62 (d, J=8.0 Hz, 2H), 7.47 (d, J=8.0 Hz, 2H), 4.38 (br. s, 4H), 3.17-2.91 (m, 4H), 1.26 (br. s, 6H). LCMS: Rt=0.88 min, m/z=410.2 (M+H).
(S)-5-(4-((3-methoxypyrrolidin-1-yl)methyl)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (40) was made using a procedure similar to that used to make 5-(4-((3-methylmorpholino)methyl)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (27), except 3-methylmorpholine was replaced with (S)-3-methoxypyrrolidine. 1H NMR (400 MHz, DMSO) δ=9.64-9.33 (m, 1H), 8.09 (s, 1H), 7.66 (s, 1H), 7.38 (d, J=8.0 Hz, 2H), 7.26 (d, J=7.9 Hz, 2H), 3.99-3.88 (m, 1H), 3.74 (s, 2H), 3.17 (s, 3H), 2.90-2.78 (m, 1H), 2.75-2.67 (m, 1H), 2.60 (d, J=7.9 Hz, 2H), 2.08-1.99 (m, 1H), 1.81-1.66 (m, 1H). LCMS: Rt=0.52 min, m/z=396.1 (M+H).
(R)-5-(4-((3-methoxypyrrolidin-1-yl)methyl)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (41) was made using a procedure similar to that used to make 5-(4-((3-methylmorpholino)methyl)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (27), except 3-methylmorpholine was replaced with (R)-3-methoxypyrrolidine. 1H NMR (400 MHz, DMSO) δ=10.59 (s, 1H), 7.85 (s, 1H), 7.29 (d, J=8.0 Hz, 2H), 7.18 (d, J=7.6 Hz, 2H), 7.08 (br. s., 1H), 3.90-3.89 (m, 1H), 3.33 (s, 2H), 2.52 (s, 3H), 2.51-2.50 (m, 1H), 2.50-2.48 (m, 1H), 2.48-2.47 (m, 2H), 2.44-2.00 (m, 1H), 1.99-1.66 (m, 1H). LCMS: Rt=0.51 min, m/z=396.2 (M+H).
5-(2-fluoro-4-(morpholinomethyl)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (42) was made using a procedure similar to that used to make 5-(4-((3-methylmorpholino)methyl)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (27), except 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzaldehyde was replaced with 3-fluoro-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzaldehyde, and 3-methylmorpholine was replaced with morpholine. 1H NMR (400 MHz, DMSO) δ=8.33 (s, 1H), 8.29 (s, 1H), 8.22-8.10 (m, 1H), 7.63-7.40 (m, 3H), 4.34 (s, 2H), 3.79 (s, 4H), 3.13 (s, 5H). LCMS: Rt=0.49 min, m/z=400.3 (M+H).
5-(3-methyl-4-(morpholinomethyl)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (43) was made using a procedure similar to that used to make 5-(4-((3-methylmorpholino)methylphenyl-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (27), except 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzaldehyde was replaced with 2-methyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzaldehyde, and 3-methylmorpholine was replaced with morpholine. 1H NMR (400 MHz, DMSO) δ=8.40 (s, 1H), 8.27 (s, 1H), 8.16 (s, 1H), 7.55 (d, J=8.0 Hz, 1H), 7.36-7.23 (m, 2), 4.36 (s, 2H), 4.01-3.66 (m, 4H), 3.22 (s, 4H), 2.46 (s, 3H). LCMS: Rt=0.51 min, m/z=396.1 (M+H).
2-oxo-5-(4-(piperidin-1-ylmethyl)phenyl)-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (44) was made using a procedure similar to that used to make 5-(4-((3-methylmorpholino)methyl)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (27), except 3-methylmorpholine was replaced with piperidine. 1H NMR (400 MHz, DMSO) δ=7.87 (s, 1H), 7.27 (d, J=8.0, 2H), 7.16 (d, J=8.0, 2H), 3.52 (s, 2H), 2.49 (m, 4H), 1.53 (m, 4H), 1.40 (m, 2H). LCMS: Rt=1.03 min, m/z=380.2 (M+H).
5-(4-((dimethylamino)methyl)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (45) was made using a procedure similar to that used to make 5-(4-((3-methylmorpholino)methyl)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (27), except 3-methylmorpholine was replaced with dimethylamine. 1H NMR (400 MHz, DMSO) δ=10.59 (s, 1H), 7.85 (s, 1H), 7.28-7.16 (m, 4H), 7.06 (s, 1H), 3.45 (s, 2H), 2.19 (s, 6H). LCMS: Rt=0.40 min, m/z=340.2 (M+H).
2-oxo-5-(4-((3-oxomorpholino)methyl)phenyl)-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (46) was made using a procedure similar to that used in step 1 in the procedure to make 5-(4-((3-methylmorpholino)methyl)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (27), except 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzaldehyde was replaced with 4-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzyl)morpholin-3-one. 1H NMR (400 MHz, DMSO) δ=8.46 (s, 1H), 8.31 (s, 1H), 8.19 (s, 1H), 7.36 (s, 4H), 4.62 (s, 2H), 4.15 (s, 2H), 3.86 (t, J=5.1 Hz, 2H), 3.32-3.29 (m, 2H). LCMS: Rt=0.59 min, m/z=396.0 (M+H).
To a solution of morpholin-3-one (40 mg, 0.78 mmol) in THF (2 mL) was added NaH (12 mg, 0.98 mmol) at 0° C. Then the mixture was stirred at 25° C. for 1 hr. 2-(4-(bromomethyl)phenyl))-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (200 mg, 0.68 mmol) was then added and the mixture was stirred at 25° C. for 15 hrs. The reaction mixture was poured into water (10 mL) and the resulting mixture extracted with EA (10 mL×2). The combined organic layers were dried over anhydrous Na2SO4, filtered and concentrated to give 4-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzyl)morpholin-3-one. The crude product was used directly without purification. TLC:PE:EA=1:1, Rf=0.2. LCMS: Rt=0.78 min, m/z=318.1 (M+H).
5-(4-((1,1-dioxidothiomorpholino)methyl)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (47) was made using a procedure similar to that used to make 5-(4-((3-methylmorpholino)methyl)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (27), except 3-methylmorpholine was replaced with thiomorpholine 1,1-dioxide. 1H NMR (400 MHz, DMSO) δ=9.62 (br, s, 1H), 8.06 (s, 1H), 7.59 (br, s, 1H), 7.38 (d, J=8.0 Hz, 2H), 7.27 (d, J=8.0 Hz, 2H), 3.71 (s, 2H), 3.14 (m, 4H), 2.91 (m, 4H). LCMS: Rt=1.1 min, m/z=430.1 (M+H).
5-(4-(morpholino(oxazol-5-yl)methyl)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (48) was made using a procedure similar to that used in step 1 in the procedure to make 5-(4-((3-methylmorpholino)methyl)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (27), except 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzaldehyde was replaced with 4-(oxazol-5-yl(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)methyl)morpholine. 1H NMR (400 MHz, DMSO) δ=10.89-10.74 (m, 1H), 8.33 (s, 1H), 7.79 (s, 1H), 7.40 (d, J=8.0 Hz, 2H), 7.21 (d, J=8.0 Hz, 2H), 7.17 (s, 1H), 6.98 (d, J=6.1 Hz, 1H), 4.72 (s, 1H), 3.59 (t, J=4.3 Hz, 4H), 2.41-2.26 (m, 4H). LCMS: Rt=0.78 min, m/z=449.2 (M+H).
Step 1: To a solution of (4-bromophenyl)(oxazol-5-yl)methanol (Science of Synthesis (2002), 11, 383479) (400 mg, 1.9 mmol, TEA (500 mg, 3.8 mmol) in DCM (4 mL) was added MsCl (200 mg, 2.3 mmol) at 0° C. Then the mixture was stirred at 25° C. for 1 hr to give crude (4-bromophenyl)(oxazol-5-yl)methyl methanesulfonate which was used directly in the next step. TLC:PE:EA=1:1 Rf=0.7.
Step 2: A solution of (4-bromophenyl)(oxazol-5-yl)methyl methanesulfonate (400 mg, 1.2 mmol) in morpholine (4 mL) was stirred at 25° C. for 16 hr. The reaction mixture was poured into water (10 mL) and the resulting mixture extracted with EA (10 mL×2). The combined organic layers were dried over anhydrous Na2SO4, filtered and concentrated to give crude product which was purified by column chromatography (PE:EA=3:1˜1:1) to give 4-((4-bromophenyl)(oxazol-5-yl)methyl)morpholine. TLC:PE:EA=1:1 Rf=0.3. 1H NMR: (CDCl3, 400 MHz), δ: 7.86 (s, 1H), 7.50 (d, J=8.4 Hz, 2H), 7.35 (d, J=8.4 Hz, 2H), 7.02 (s, 1H), 4.50 (s, 1H), 3.73 (t, J=4.6 Hz, 4H), 2.41 (m, 4H).
Step 3: To a solution of 4-((4-bromophenyl)(oxazol-5-yl)methyl)morpholine (200 mg, 1.0 mmol, 4,4,4′,4′,5,5,5′,5′-octamethyl-2,2′-bi(1,3,2-dioxaborolane) (500 mg, 2.0 mmol, NaOAc (240 mg, 3.0 mmol) in dioxane (2 mL) was added Pd(dppf)Cl2 (26 mg, 0.05 mmol), the mixture was stirred at 100° C. for 16 hrs. The mixture was diluted with H2O (10 mL), extracted by EA (5.0 mL×3), dried over Na2SO4, filtered and concentrated in vacuo to give 4-(oxazol-5-yl(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)methyl)morpholine. LCMS: Rt=1.20 min, m/z=371.1 (M+H).
5-(4-(methylsulfonamidomethyl)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (49) was made using a procedure similar to that used in step 1 in the procedure to make 5-(4-((3-methylmorpholino)methyl)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (27), except 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzaldehyde was replaced with N-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzyl)methanesulfonamide. 1H NMR (400 MHz, DMSO) δ=8.46 (br, s, 1H), 8.29 (s, 1H), 8.18 (br, s, 1H), 7.64 (t, 1H), 7.46 (d, J=8.2 Hz, 2H), 7.36 (m, 2H), 4.24 (d, J=6.4 Hz, 2H), 2.88 (s, 3H). LCMS: Rt=0.60 min, m/z=390.0 (M+H).
5-(4-((4-hydroxytetrahydro-2H-pyran-4-yl)methyl)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (50) was made using a procedure similar to that used in step 1 in the procedure to make 5-(4-((3-methylmorpholino)methyl)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (27), except 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzaldehyde was replaced with 4-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzyl)tetrahydro-2H-pyran-4-ol. TLC:PE:EA=1:1 Rf=0.1. LCMS: Rt=0.622 min, [M+H]+=397.1. 1H NMR (400 MHz, DMSO) δ=9.56-10.13 (m, 1H), 8.02 (s, 1H), 7.44-7.56 (m, 1H), 7.25 (d, J=7.6 Hz, 2H), 7.07-7.21 (m, 2H), 4.35-4.50 (m, 1H), 3.60 (d, J=6.6 Hz, 4H), 2.73 (s, 2H), 1.48-1.66 (m, 2H), 1.32 (d, J=13.2 Hz, 2H).
4-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzyl)tetrahydro-2H-pyran-4-ol was obtained using a method similar to step 3 in the preparation of 4-(oxazol-5-yl(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl))methyl)morpholine except 4-((4-bromophenyl)(oxazol-5-yl)methyl)morpholine was replaced with 4-(4-bromobenzyl)tetrahydro-2H-pyran-4-ol.
To a mixture of Mg (1 g, 41 mmol), 1,2-dibromoethane (10 mg, 0.1 mmol) in diethyl ether (20 mL) was added 1-bromo-4-(bromomethyl)benzene (1 g, 1 mmol) drop-wise. The mixture was stirred at 0° C. for 1 hr. Then the mixture was added tetrahydro-4H-pyran-4-one (400 mg, 1.2 mmol) at 0° C. Then the mixture was stirred at 25° C. for 15 hr. The reaction mixture was poured into water (20 mL) and the resulting mixture extracted with EA (20 mL×2). The combined organic layers were dried over anhydrous Na2SO4, filtered and concentrated to get the crude product. The crude product was purified by column chromatography (PE:EA=5:1˜1:1) to give 4-(4-bromobenzyl)tetrahydro-2H-pyran-4-ol. TLC:PE:EA=1:1 Rf=0.5. LCMS: Rt=0.69 min, [M+H]+=253.0, 1H NMR (400 MHz, DMSO) δ=7.50-7.44 (m, 2H), 7.11 (d, J=8.4 Hz, 2H), 3.79-3.72 (m, 4H), 2.75 (s, 2H), 1.81-1.72 (m, 2H), 1.52-1.39 (m, 2H).
5-(4-((4-fluorotetrahydro-2H-pyran-4-yl)methyl)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (51) was made using a procedure similar to that used in step 1 in the procedure to make 5-(4-((3-methylmorpholino)methyl)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (27), except 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzaldehyde was replaced with 2-(4-((4-fluorotetrahydro-2H-pyran-4-yl)methyl)phenyl-4,4,5,5-tetramethyl-1,3,2-dioxaborolane. TLC:PE:EA=1:1 Rf=0.1. LCMS: Rt=0.775 min, [M+H]+=399.0. 1H NMR (400 MHz, DMSO) δ=14.23-13.31 (m, 1H), 8.49 (s, 1H), 8.32 (s, 1H), 8.22 (s, 1H), 7.42-7.25 (m, 4H), 3.74 (m, 2H), 3.56-3.51 (m, 2H), 3.11-2.93 (m, 2H), 1.90-1.65 (m, 2H), 1.65-1.52 (m, 2H).
2-(4-((4-fluorotetrahydro-2H-pyran-4-ylmethyl)phenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane was obtained using a method similar to step 3 in the preparation of 4-(oxazol-5-yl(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)methyl)morpholine except 4-((4-bromophenyl)(oxazol-5-yl)methyl)morpholine was replaced with 4-(4-bromobenzyl)-4-fluorotetrahydro-2H-pyran.
To a solution of 4-(4-bromobenzyl)tetrahydro-2H-pyran-4-ol (500 mg, 2 mmol) in DCM (5 mL) was added DAST (300 mg, 2.2 mmol) at 0° C. Then the mixture was stirred at 0° C. for 1 hr. The reaction mixture was poured into water (10 mL) and the resulting mixture extracted with EA (10 mL×2). The combined organic layers were dried over anhydrous Na2SO4, filtered and concentrated to get the crude product. The crude product was purified by column chromatography (PE:EA=10:1˜3:1) to get 4-(4-bromobenzyl)-4-fluorotetrahydro-2H-pyran (300 mg, 1.2 mmol, 60% yield) as colorless solid. TLC:PE:EA=1:1 Rf=0.6.
Step 1. To a solution of diethyl (4-bromobenzyl)phosphonate (500 mg, 1 mmol, and tetrahydro-4H-pyran-4-one (200 mg, 1.2 mmol in THF (5 mL) was added tBuOK (300 mg, 2 mmol). Then the mixture was stirred at 25° C. for 16 hr. The reaction mixture was poured into water (10 mL). The resulting mixture was extracted with EA (10 mL×2). The combined organic layers were dried over anhydrous Na2SO4, filtered and concentrated to get the crude product. The crude product was purified column chromatography (5:1˜3:1) to give 4-(4-bromobenzylidene)tetrahydro-2H-pyran. TLC:PE:EA=1:1 Rf=0.4. LCMS: Rt=1.00 min, [M+H]+=252.9. 1H NMR (400 MHz, CDCl3) δ=7.44 (d, J=8.4 Hz, 1H), 7.07 (d, J=8.4 Hz, 1H), 6.26 (s, 1H), 3.79 (t, J=5.4 Hz, 2H), 3.67 (t, J=5.4 Hz, 2H), 2.54-2.46 (m, 2H), 2.44-2.35 (m, 2H).
Step 2: To a solution of 4-(4-bromobenzylidene)tetrahydro-2H-pyran (300 mg, 1.0 mmol), 4,4,4′,4′,5,5,5′,5′-octamethyl-2,2′-bi(1,3,2-dioxaborolane) (500 mg, 2.0 mmol), NaOAc (240 mg, 3.0 mmol) in dioxane (2 mL) was added Pd(dppf)Cl2 (26 mg, 0.05 mmol), the mixture was stirred at 100° C. for 16 hr to give which 4,4,5,5-tetramethyl-2-(4-((tetrahydro-4H-pyran-4-ylidene)methyl)phenyl)-1,3,2-dioxaborolane was used directly in the next step. LCMS: Rt=1.12 min, [M+H]+=301.1.
Step 3: To a solution of 5-bromo-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (200 mg, 0.70 mmol), 4,4,5,5-tetramethyl-2-(4-((tetrahydro-4H-pyran-4-ylidene)methyl)phenyl)-1,3,2-dioxaborolane (240 mg, 0.84 mmol), Na2CO3 (149 mg, 1.40 mmol) in dioxane:H2O=9:1 (2 mL) was added Pd(dppf)Cl2 (26 mg, 0.04 mmol). The mixture was then stirred at 100° C. for 16 hr. The reaction mixture was poured into water (10 mL) and extracted with EA (10 mL×2). The combined organic layers were dried over anhydrous Na2SO4, filtered and concentrated to give crude product. The crude product was purified by prep-HPLC (TFA) to give 2-oxo-5-(4-((tetrahydro-4H-pyran-4-ylidene)methyl)phenyl)-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide. TLC:PE:EA=1:1 Rf=0.1. LCMS: Rt=0.87 min, [M+H]+=379.1.
Step 4: To a solution of 2-oxo-5-(4-((tetrahydro-4H-pyran-4-ylidene)methyl)phenyl)-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (50 mg, 0.13 mmol) in MeOH (2 mL) was added Pd/C (10 mg) and the mixture stirred at 25° C. under a balloon of hydrogen gas for 16 hrs. The reaction mixture was filtered and concentrated to give crude product. The crude product was purified by prep-HPLC (TFA) to give 2-oxo-5-(4-((tetrahydro-2H-pyran-4-yl)methyl)phenyl)-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide. TLC:PE:EA=1:1 Rf=0.3. LCMS: Rt=0.75 min, [M+H]+=381.0. 1H NMR (400 MHz, DMSO) δ=9.90-9.31 (m, 1H), 8.09 (s, 1H), 7.79-7.53 (m, 1H), 7.30-7.05 (m, 4H), 3.82 (d, J=11.2 Hz, 2H), 3.27-3.21 (m, 2H), 2.58-2.53 (m, 2H), 1.76 (t, J=7.2 Hz, 1H), 1.49 (d, J=11.0 Hz, 2H), 1.26-1.20 (m, 2H).
5-(4-(2-(1,4-dioxan-2-yl)-1,1-difluoroethyl)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (53) was made using a procedure similar to that used in step 1 in the procedure to make 5-(4-((3-methylmorpholino)methyl)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (27), except 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzaldehyde was replaced with 0.2-(4-(2-(1,4-dioxan-2-yl)-1,1-difluoroethyl)phenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane
2-(4-(2-(1,4-dioxan-2-yl)-1,1-difluoroethyl)phenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane was obtained using a method similar to step 3 in the preparation of 4-(oxazol-5-yl(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)methyl)morpholine except 4-((4-bromophenyl)(oxazol-5-yl)methyl)morpholine was replaced with 2-(2-(4-bromophenyl)-2,2-difluoroethyl)-1,4-dioxane.
Step 1: 2-(4-bromophenyl)-1,3-dithiane (2.0 g, 7.27 mmol) in THF (30 ml) was cooled to −78° C. and LDA (4.36 mL, 10.9 mmol) was added dropwise. The mixture was allowed to warm to 0° C. and then added dropwise to a solution of 2-(iodomethyl)-1,4-dioxane (1.82 g, 7.99 mmol) in THF (30 mL) at 0° C. Then the mixture was allowed to warm to 25° C. and stirred for 3 h. The reaction mixture was poured into water (100 mL) and extracted with EA (100 mL×2). The combined organic phase was dried over anhydrous Na2SO4, filtered and concentrated to give crude product. The crude product was purified by silica gel column (PE/EA=20/1 to 5/1) to give 2-((2-(4-bromophenyl)-1,3-dithian-2-yl)methyl)-1,4-dioxane. TLC: PE/EA=5/1, Rf=0.60. LCMS: Rt=1.02, [M+H]+=375/377. 1H NMR (400 MHz, CDCl3) δ=7.84 (d, J=8.0 Hz, 2H), 7.51 (d, J=8.0 Hz, 2H), 3.69-3.42 (m, 6H), 3.16 (m, 1H), 2.75-2.62 (m, 4H), 2.18 (m, 1H), 1.99-1.91 (m, 2H), 1.89 (m, 1H).
Step 2: Triethylamine trihydrofluoride (2.15 g, 13.32 mmol, Et3N-3HF) was added to a mixture of 2-((2-(4-bromophenyl)-1,3-dithian-2-yl)methyl)-1,4-dioxane (1.0 g, 2.66 mmol) in DCM (50 ml) at −78° C. Then 1,3-dibromo-5,5-dimethylimidazolidine-2,4-dione (3.81 g, 13.32 mmol) in DCM (50 ml) was added in 30 min. The mixture was stirred for 3.5 h at 25° C. The solution was quenched with NaOH (1N, 50 mL) and extracted with DCM (50 ml×3). The separated organic layer was dried over Na2SO4, filtered and concentrated in vacuo. The crude product was purified by reversed phase column chromatography (FA) to afford 2-(2-(4-bromophenyl)-2,2-difluoroethyl)-1,4-dioxane. TLC: PE/EA=5:1, Rf=0.5. LCMS: Rt=5.979 min, M=306/308. 1H NMR (400 MHz, CHLOROFORM-d) δ=7.59 (d, J=8.0 Hz, 2H), 7.37 (d, J=8.0 Hz, 2H), 3.84-3.55 (m, 6H), 3.34 (m, 1H), 2.44-2.28 (m, 1H), 2.23-2.06 (m, 1H).
Step 1: To a solution of 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenol (3.0 g, 13.6 mmol) in THF (30 mL) was added NaH (1.1 g 27.2 mmol) at 0° C. and the mixture stirred at 0° C. for 0.5 hrs. 1-(bromomethyl)-3-nitrobenzene (3.5 g, 16.4 mmol) was then added to the above mixture at 25° C. The mixture was washed with H2O (100 mL) and extracted with EA (100 mL×2). The combined organic layers were dried over anhydrous Na2SO4, filtered and concentrated to give crude 4,4,5,5-tetramethyl-2-(4-((3-nitrobenzyl)oxy)phenyl)-1,3,2-dioxaborolane. The residue was taken to the next step without purification. LCMS: Rt=0.99 min, m/z=356.2 (M+H).
Step 2: To a solution of 5-bromo-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (4.0 g, 14.1 mmol) in dioxane (200 mL) and H2O (20 mL) was added 4,4,5,5-tetramethyl-2-(4-((3-nitrobenzyl)oxy)phenyl)-1,3,2-dioxaborolane (5.0 g, 14.1 mmol), Na2CO3 (3.0 g, 28.2 mmol) and PdCl2(dppf)-CH2Cl2 (500 mg, 0.7 mmol) at 25° C. under N2. The mixture was stirred at 100° C. for 12 hrs. The mixture was washed with H2O (100 mL) and extracted with EA (200 mL×2). The combined organic layers were dried over anhydrous Na2SO4, filtered, and concentrated. The residue was purified by column chromatography (PE/EA=1/1) to give 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (54). 1H NMR (400 MHz, DMSO) δ=13.65 (br. s., 1H), 8.51-8.42 (m, 1H), 8.37-8.33 (m, 1H), 8.30-8.26 (m, 1H), 8.24-8.14 (m, 2H), 7.97-7.92 (m, 1H), 7.75-7.69 (m, 1H), 7.30 (d, J=8.5 Hz, 2H), 7.14 (d, J=8.7 Hz, 2H), 5.33 (s, 2H). LCMS: Rt=0.85 min, m/z=434.2 (M+H).
Step 1: To a solution of 1-(4-(hydroxymethyl)piperidin-1-yl)ethan-1-one (200 mg, 1.3 mmol), 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenol (250 mg, 1.4 mmol), PPh3 (600 mg, 2.6 mmol) in THF (5 mL) was added DTBAD (500 mg, 2.6 mmol) at 0° C. Then the mixture was stirred at 25° C. for 16 hrs. The reaction mixture was poured into water (20 ml) and then extracted with EA (20 mL×2). The combined organic layers were dried over anhydrous Na2SO4, filtered and concentrated to give crude 1-(4-((4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenoxy)methyl)piperidin-1-yl)ethan-1-one which was used directly in the next step. TLC: PE/EA=1:1, Rf=0.6. LCMS: Rt=1.60 min, m/z=360.2 (M+H).
Step 2: To a solution of 5-bromo-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (200 mg, 0.70 mmol), 1-(4-((4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenoxy)methyl)piperidin-1-yl)ethan-1-one (320 mg, 0.84 mmol), Na2CO3 (149 mg, 1.40 mmol) in dioxane (2 mL) and H2O (0.2 mL) was added PdCl2(dppf)-CH2Cl2 (26 mg, 0.04 mmol) under N2, and the mixture was stirred at 100° C. for 16 hrs. The reaction mixture was poured into water (10 mL) and extracted with ethyl acetate (10 mL×2). The combined organic layers were dried over anhydrous Na2SO4, filtered and concentrated to give crude product. The crude product was purified by Prep-HPLC under the acidic conditions (MeCN/water with TFA) to give 5-(4-((1-acetylpiperidin-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (55). 1H NMR (400 MHz, DMSO) δ=8.70-8.48 (m, 1H), 8.25 (s, 1H), 8.17-8.07 (m, 1H), 7.26 (d, J=8.6 Hz, 2H), 7.02 (d, J=8.8 Hz, 2H), 4.54-4.34 (m, 1H), 4.01-3.81 (m, 3H), 3.13-3.00 (m, 1H), 2.61-2.54 (m, 1H), 2.01 (s, 4H), 1.81 (s, 2H), 1.37-1.08 (m, 2H). LCMS: Rt=0.73 min, m/z=438.1 (M+H).
2-oxo-5-(4-((tetrahydro-2H-pyran-4-yl)methoxy)phenyl)-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (56) was made using a procedure similar to that used to make 5-(4-((1-acetylpiperidin-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (55), except 1-(4-(hydroxymethyl)piperidin-1-yl)ethan-1-one was replaced with (tetrahydro-2H-pyran-4-yl)methanol. 1H NMR (400 MHz, DMSO) δ=13.62 (s, 1H), 8.46 (s, 1H), 8.27 (s, 1H), 8.18 (s, 1H), 7.26 (d, J=8.0 Hz, 2H), 7.02 (d, J=8.0 Hz, 2H), 3.88 (d, J=8.0 Hz, 4H), 3.33-3.28 (m, 2H), 2.06-1.95 (m, 1H), 1.69 (m, 2H), 1.34 (m, 2H). LCMS: Rt=0.79 min, m/z=397.1 (M+H).
5-(4-((3-aminobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (57) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 3-(bromomethyl)aniline. 1H NMR (400 MHz, DMSO) δ=7.96 (s, 1H), 7.42 (brs, 1H), 7.18-7.15 (d, J=12 Hz, 2H), 7.03-6.98 (m, 3H), 6.65 (s, 1H), 6.64-6.58 (d, J=24 Hz, 1H), 6.57-6.51 (d, J=24 Hz, 1H), 4.96 (s, 2H). LCMS: Rt=0.66 min, m/z=404.2 (M+H).
5-(4-(cyclohexylmethoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (58) was made using a procedure similar to that used to make 5-(4-((1-acetylpiperidin-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (55), except 1-(4-(hydroxymethyl)piperidin-1-yl)ethan-1-one was replaced with cyclohexylmethanol. 1H NMR (400 MHz, DMSO) δ=12.70 (s, 1H), 7.66 (s, 1H), 7.42 (s, 1H), 7.31 (s, 1H), 6.40 (d, J=8.0 Hz, 2H), 6.15 (d, J=8.0 Hz, 2H), 2.97 (d, J=4.0 Hz, 2H), 1.02-0.74 (m, 6H), 0.49-0.28 (m, 3H), 0.26-0.12 (m, 2H). LCMS: Rt=0.94 min, m/z=395.1 (M+H).
5-(4-((4-methoxybenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (59) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 1-(bromomethyl)-4-methoxybenzene. 1H NMR (400 MHz, DMSO) δ=8.66-8.49 (m, 1H), 8.26 (s, 1H), 8.14 (s, 1H), 7.42 (d, J=8.0 Hz, 2H), 7.27 (d, J=8.0 Hz, 2H), 7.09 (d, J=8.0 Hz, 2H), 6.97 (d, J=8.0 Hz, 2H), 5.07 (s, 2H), 3.77 (s, 3H). LCMS: Rt=0.82 min, m/z=419.3 (M+H).
5-(4-((4-(dimethylcarbamoyl)benzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (60) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 4-(bromomethyl)-N,N-dimethylbenzamide. 1H NMR (400 MHz, DMSO) δ=8.58-8.40 (m, 1H), 8.29 (s, 1H), 8.24-8.16 (m, 1H), 7.54 (d, J=8.0 Hz, 2H), 7.49-7.41 (m, 2H), 7.30 (d, J=8.0 Hz, 2H), 7.12 (d, J=8.0 Hz, 2H), 5.21 (s, 2H), 2.99 (s, 3H), 2.92 (s, 3H). LCMS: Rt=0.76 min, m/z=460.1 (M+H).
5-(4-((3-methoxybenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (61) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 1-(bromomethyl)-3-methoxybenzene. 1H NMR (400 MHz, DMSO) δ=8.52-8.35 (m, 1H), 8.24 (s, 1H), 8.17-8.04 (m, 1H), 7.67-7.48 (m, 1H), 7.40-7.23 (m, 2H), 7.18-7.01 (m, 4H), 6.98-6.85 (m, 1H), 5.13 (s, 2H), 3.77 (s, 3H). LCMS: Rt=0.89 min, m/z=419.3 (M+H).
5-(4-((3-(methylcarbamoyl)benzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (62) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyloxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 3-(bromomethyl)-N-methylbenzamide. 1H NMR (400 MHz, DMSO) δ=8.60-8.45 (m, 1H), 8.29 (s, 1H), 8.23-8.15 (m, 1H), 7.96 (s, 1H), 7.89-7.77 (m, 1H), 7.69-7.59 (m, 1H), 7.50 (s, 1H), 7.30 (d, J=8.0 Hz, 2H), 7.12 (d, J=8.0 Hz, 2H), 5.22 (s, 2H), 2.79 (d, J=4.0 Hz, 3H). LCMS: Rt=0.17 min, m/z=446.1 (M+H).
2-oxo-5-(4-((tetrahydro-2H-pyran-4-yl)oxy)phenyl)-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (63) was made using a procedure similar to that used to make 5-(4-((1-acetylpiperidin-4-ylmethoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (55), except 1-(4-(hydroxymethyl)piperidin-1-yl)ethan-1-one was replaced with tetrahydro-2H-pyran-4-ol. 1H NMR (400 MHz, DMSO) δ=8.79 (s, 1H), 8.23 (s, 1H), 8.07 (s, 1H), 7.26 (d, J=8.8 Hz, 2H), 7.07 (d, J=8.4 Hz, 2H), 4.65-4.60 (m, 1H), 3.89-3.85 (m, 2H), 3.53-3.47 (m, 2H), 2.01-1.64 (m, 2H), 1.62-1.58 (m, 2H). LCMS: Rt=0.78 min, m/z=383.0 (M+H).
5-(4-((3-(methylsulfonamido)benzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (64) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with N-(3-(bromomethyl)phenyl)methanesulfonamide. 1H NMR (400 MHz, DMSO) δ=9.83 (s, 1H), 8.47 (br, s, 1H), 8.27 (s, 1H), 8.18 (br, s, 1H), 7.36 (m, 1H), 7.31 (m, 1H), 7.21 (m, 2H), 7.20 (m, 2H), 7.10 (m, 2H), 5.14 (s, 2H), 2.99 (s, 3H). LCMS: Rt=0.72 min, m/z=482.0 (M+H).
5-(4-((3-carbamoylbenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (65) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 3-(bromomethyl)benzamide. 1H NMR (400 MHz, DMSO) δ=8.00 (s, 3H), 7.85 (d, J=8.0 Hz, 1H), 7.64 (d, J=8.0 Hz, 1H), 7.55-7.45 (m, 1H), 7.41 (s, 1H), 7.20 (d, J=8.0 Hz, 2H), 7.06 (d, J=8.0 Hz, 2H), 5.18 (s, 2H). LCMS: Rt=0.78 min, m/z=432.1 (M+H).
2-oxo-5-(4-((3-(propylamino)benzyl)oxy)phenyl)-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (66) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 3-(bromomethyl)-N-propylaniline. 1H NMR (400 MHz, DMSO) δ=8.46 (br s, 1H), 8.28 (s, 1H), 8.20 (br s, 1H), 7.27 (d, J=8.0 Hz, 2H), 7.17 (t, J=7.7 Hz, 1H), 7.08 (d, J=8.0 Hz, 2H), 6.81 (br s, 1H), 6.76-6.66 (m, 2H), 3.02 (t, J=7.2 Hz, 2H), 1.58-1.53 (m, 2H), 0.94 (t, J=7.4 Hz, 3H). LCMS: Rt=0.74 min, m/z=446.3 (M+H).
5-(4-((3-(dimethylcarbamoyl)benzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (67) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 3-(bromomethyl)-N,N-dimethylbenzamide. 1H NMR (400 MHz, DMSO) δ=7.54 (s, 1H), 7.51-7.45 (m, 3H), 7.40-7.34 (m, 1H), 7.17 (d, J=8.0 Hz, 2H), 7.04 (d, J=8.0 Hz, 2H), 5.27-5.14 (m, 2H), 3.04-2.97 (m, 3H), 2.89 (s, 3H). LCMS: Rt=0.84 min, m/z=460.0 (M+H).
5-(4-((3-acetamidobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (68) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with N-(3-(bromomethyl)phenyl)acetamide. 1H NMR (400 MHz, DMSO) δ=10.01 (s, 1H), 8.48 (brs, 1H), 8.29 (s, 1H), 8.21 (br s, 1H), 7.71 (s, 1H), 7.55 (m, 1H), 7.35-7.32 (m, 1H), 7.29 (d, J=8.8 Hz, 2H), 7.14 (m, 1H), 7.10 (d, J=8.8 Hz, 2H), 5.13 (s, 2H), 2.05 (s, 3H). LCMS: Rt=0.75 min, m/z=446.3 (M+H).
5-(4-((4-(methylcarbamoyl)benzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (69) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 4-(bromomethyl)-N-methylbenzamide. 1H NMR (400 MHz, DMSO) δ=8.57-8.42 (m, 1H), 8.32-8.24 (m, 1H), 8.21-8.12 (m, 1H), 7.87 (d, J=8.2 Hz, 2H), 7.56 (d, J=8.2 Hz, 2H), 7.29 (d, J=8.6 Hz, 2H), 7.11 (d, J=8.6 Hz, 2H), 5.23 (s, 2H), 2.79 (m, 3H). LCMS: Rt=0.67 min, m/z=446.1 (M+H).
2-oxo-5-(4-(pyridin-4-ylmethoxy)phenyl)-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (70) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 4-(bromomethyl)pyridine. 1H NMR (400 MHz, MeOD) δ=8.57 (d, J=6.0 Hz, 2H), 8.13 (s, 1H), 7.59 (d, J=8.8 Hz, 2H), 7.25 (d, J=8.8 Hz, 2H), 7.07 (d, J=8.8 Hz, 2H), 5.25 (s, 2H). LCMS: Rt=0.77 min, m/z=390.0 (M+H).
5-(4-(benzo[c][1,2,5]oxadiazol-5-ylmethoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (71) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 5-(bromomethyl)benzo[c][1,2,5]oxadiazole. 1H NMR (400 MHz, DMSO) δ=13.93-13.31 (m, 1H), 8.48 (s, 1H), 8.29 (s, 1H), 8.18 (s, 1H), 8.15-8.08 (m, 2H), 7.69 (d, J=9.5 Hz, 1H), 7.33 (d, J=8.4 Hz, 2H), 7.19 (d, J=8.4 Hz, 2H), 5.34 (s, 2H). LCMS: Rt=0.83 min, m/z=431.0 (M+H).
2-oxo-5-(4-(pyridin-3-ylmethoxy)phenyl)-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (72) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 3-(bromomethyl)pyridine. 1H NMR (400 MHz, MeOD) δ=8.71 (s, 1H), 8.57 (d, J=4.0 Hz, 1H), 8.08 (s., 1H), 7.92 (d, J=8.0 Hz, 1H), 7.51-7.39 (m, 1H), 7.24 (d, J=8.0 Hz, 2H), 7.10 (s., 2H), 5.20 (s, 2H). LCMS: Rt=0.77 min, m/z=390.0 (M+H).
2-oxo-5-(4-(pyridin-2-ylmethoxy)phenyl)-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (73) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 2-(bromomethyl)pyridine. 1H NMR (400 MHz, DMSO) δ=8.65-8.55 (m, 1H), 8.04 (s, 1H), 7.90-7.82 (m, 1H), 7.56 (d, J=8.0 Hz, 1H), 7.37 (m, 1H), 7.22 (d, J=8.0 Hz, 2H), 7.07 (d, J=8.0 Hz, 2H), 5.22 (s, 2H). LCMS: Rt=0.84 min, m/z=390.0 (M+H).
5-(4-(benzo[c][1,2,5]oxadiazol-4-ylmethoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (74) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 4-(bromomethyl)benzo[c][1,2,5]oxadiazole. 1H NMR (400 MHz, DMSO) δ=13.76-13.59 (m, 1H), 8.58-8.43 (m, 1H), 8.30 (s, 1H), 8.19 (s, 1H), 8.06 (d, J=8.0 Hz, 1H), 7.76-7.71 (m, 1H), 7.68 (d, J=8.0 Hz, 1H), 7.32 (d, J=8.0 Hz, 2H), 7.19 (d, J=8.0 Hz, 2H), 5.70-5.48 (m, 2H). LCMS: Rt=0.85 min, m/z=431.1 (M+H).
5-(4-((3-(methylsulfonyl)benzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (75) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 1-(bromomethyl)-3-(methylsulfonyl)benzene. 1H NMR (400 MHz, DMSO) δ=13.66 (s, 1H), 8.48 (s, 1H), 8.30 (s, 1H), 8.20 (s, 1H), 8.06 (s, 1H), 7.94 (s, 1H), 7.85 (s, 1H), 7.74 (s, 1H), 7.32 (d, J=8.0 Hz, 2H), 7.15 (d, J=8.0 Hz, 2H), 5.30 (s, 2H), 3.26 (s, 3H). LCMS: Rt=0.76 min, m/z=467.2 (M+H).
5-(4-((2-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (76) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 1-(bromomethyl)-2-nitrobenzene. 1H NMR (400 MHz, DMSO) δ=10.37 (brs, 1H), 8.15 (d, J=8.2 Hz, 1H), 7.90 (br. s., 1H), 7.85-7.82 (m, 2H), 7.66-7.62 (m, 1H), 7.18 (d, J=8.0 Hz, 2H), 7.03 (d, J=8.3 Hz, 2H), 5.49 (s, 2H). LCMS: Rt=0.85 min, m/z=434.2 (M+H).
5-(4-((4-cyanobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (77) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 4-(bromomethyl)benzonitrile. 1H NMR (400 MHz, DMSO) δ=13.65 (br, s, 1H), 8.49 (s., 1H), 8.27 (s, 1H), 8.19 (s, 1H), 7.91 (d, J=8.0 Hz, 2H), 7.69 (d, J=8.0 Hz, 2H), 7.31 (d, J=8.0 Hz, 2H), 7.12 (d, J=8.0 Hz, 2H), 5.29 (s, 2H). LCMS: Rt=1.02 min, m/z=414.0 (M+H).
5-(4-((3-cyanobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (78) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 3-(bromomethyl)benzonitrile. 1H NMR (400 MHz, DMSO) δ=13.78-13.42 (m, 1H), 8.49 (s., 1H), 8.29 (s, 1H), 8.20 (s., 1H), 7.96 (s, 1H), 7.84 (d, J=8.0 Hz, 2H), 7.71-7.54 (m, 1H), 7.30 (d, J=8.0 Hz, 2H), 7.13 (d, J=8.0 Hz, 2H), 5.23 (s, 2H). LCMS: Rt=0.82 min, m/z=414.1 (M+H).
2-oxo-6-(trifluoromethyl)-5-(4-((3-(trifluoromethylbenzyl)oxy)phenyl)-1,2-dihydropyridine-3-carboxamide (79) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 1-(bromomethyl)-3-(trifluoromethyl)benzene. 1H NMR (400 MHz, DMSO) δ=13.66 (br, s, 1H), 8.48 (s, 1H), 8.28 (s, 1H), 8.21 (s, 1H), 7.85 (s, 1H), 7.81 (d, J=8.0 Hz, 1H), 7.72 (m, 1H), 7.68 (d, J=8.0 Hz, 1H), 7.31 (d, J=8.0 Hz, 2H), 7.13 (d, J=8.0 Hz, 2H), 5.28 (s, 2H). LCMS: Rt=0.91 min, m/z=457.1 (M+H).
(R or S)-2-oxo-5-(4-(1-(pyridin-3-yl)ethoxy)phenyl)-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide; (SFC peak 1, Chiral) (80) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 3-(1-bromoethyl)pyridine. Racemic mixture was separated using chiral SFC following elution on a Chiralcel-OD-H 20×250 mm semi-prep column, with a mobile phase of methanol (5-40%) in CO2+DEA (0.05%) and a flow rate of 60-100 mL/min (“Chiral HPLC” conditions herein). 1H NMR (400 MHz, DMSO) δ=14.09-13.22 (m, 1H), 8.92-8.63 (m, 2H), 8.50 (d, J=4.8 Hz, 1H), 8.19 (s, 1H), 8.04 (s, 1H), 7.85 (d, J=7.9 Hz, 1H), 7.40 (d J=7.8 Hz, 1H), 7.20 (d, J=8.5 Hz, 2H), 7.01 (d, J=8.7 Hz, 2H), 5.68 (m, 1H), 1.61 (d, J=6.4 Hz, 3H). LCMS: Rt=0.89 min, m/z=404.1 (M+H). SFC: Rt=2.33 min, e.e. 92%.
(R or S)-2-oxo-5-(4-(1-(pyridin-3-yl)ethoxy)phenyl)-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide; (SFC peak 1, Chiral) (81) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 3-(1-bromoethyl)pyridine. 1H NMR (400 MHz, DMSO) δ=9.08-8.79 (m, 1H), 8.68 (d, J=1.9 Hz, 1H), 8.50 (d, J=4.8 Hz, 1H), 8.15 (s, 1H), 7.95 (s, 1H), 7.85 (d, J=7.9 Hz, 1H), 7.40 (d J=8.1 Hz, 1H), 7.18 (d, J=8.7 Hz, 2H), 7.00 (d, J=8.8 Hz, 2H), 5.67 (m, 1H), 1.61 (d, J=6.4 Hz, 3H). LCMS: Rt=0.89 min, m/z=404.1 (M+H). SFC: Rt=2.48 min, e.e. 82%.
2-oxo-5-(4-(pyrimidin-5-ylmethoxy)phenyl)-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (82) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 5-(bromomethyl)pyrimidine. 1H NMR (400 MHz, DMSO) δ=10.84-10.38 (m, 1H), 9.20 (s, 1H), 8.96 (s, 2H), 7.84 (s, 1H), 7.23-7.10 (m, 4H), 7.05 (d, J=8.7 Hz, 2H), 5.21 (s, 2H). LCMS: Rt=0.57 min, m/z=413.1 (M+H).
5-(4-((1-methylpiperidin-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (83) was made using a procedure similar to that used to make 5-(4-((1-acetylpiperidin-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (55), except 1-(4-(hydroxymethyl)piperidin-1-yl)ethan-1-one was replaced with (1-methylpiperidin-4-yl)methanol. 1H NMR (400 MHz, DMSO) δ=10.60 (d, J=5.1 Hz, 1H), 7.83 (s, 1H), 7.16-7.07 (m, 3H), 6.91 (d, J=8.7 Hz, 2H), 3.85 (d, J=5.8 Hz, 2H), 3.02-2.91 (m, 2H), 2.32 (s, 3H), 2.17 (s, 2H), 1.89-1.72 (m, 3H), 1.40 (d, J=10.8 Hz, 2H). LCMS: Rt=0.87 min, m/z=410.2 (M+H).
2-oxo-5-(4-(pyridazin-4-ylmethoxy)phenyl)-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (84) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 4-(bromomethyl)pyridazine. 1H NMR (400 MHz, DMSO) δ=9.34 (s, 1H), 9.26 (d, J=4.0 Hz, 1H), 8.20 (s, 1H), 8.08 (br. s., 1H), 7.77 (s, 1H), 7.71 (br. s., 1H), 7.26 (d, J=8.0 Hz, 2H), 7.11 (d, J=8.0 Hz, 2H), 5.30 (s, 2H). LCMS: Rt=0.65 min, m/z=391.2 (M+H).
5-(4-((1H-indazol-6-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (85) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 6-(bromomethyl)-1H-indazole. 1H NMR (400 MHz, DMSO) δ=8.50 (br. s., 1H), 8.28 (s, 1H), 8.08 (s, 1H), 7.79 (d, J=8.0 Hz, 1H), 7.65 (s, 1H), 7.29 (d, J=8.0 Hz, 2H), 7.22 (d, J=8.0 Hz, 1H), 7.14 (d, J=8.0 Hz, 2H), 5.31 (s, 2H). LCMS: Rt=0.76 min, m/z=429.2 (M+H).
5-(4-((1H-indol-6-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (86) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 6-(bromomethyl)-1H-indole. 1H NMR (400 MHz, DMSO) δ=11.14 (s, 1H), 8.49 (br, s, 1H), 8.27 (s, 1H), 8.17 (br, s, 1H), 7.56 (m, 1H), 7.54 (m, 1H), 7.36 (m, 1H), 7.28 (m, 2H), 7.12 (m, 2H), 6.43 (br. s., 1H), 5.24 (s, 2H). LCMS: Rt=0.82 min, m/z=428.3 (M+H).
2-oxo-6-(trifluoromethyl)-5-(4-((4-(trifluoromethyl)benzyl)oxy)phenyl)-1,2-dihydropyridine-3-carboxamide (87) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 1-(bromomethyl)-4-(trifluoromethyl)benzene. 1H NMR (400 MHz, DMSO) δ=13.65 (br, s, 1H), 8.48 (br, s, 1H), 8.27 (s, 1H), 8.17 (s, 1H), 7.96 (m, 2H), 7.71 (m, 2H), 7.30 (d, J=8.0 Hz, 2H), 7.12 (d, J=8.0 Hz, 2H), 5.28 (s, 2H). LCMS: Rt=0.91 min, m/z=457.1 (M+H).
2-oxo-5-(4-((5-oxopyrrolidin-3-yl)methoxy)phenyl)-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (88) was made using a procedure similar to that used to make 5-(4-((1-acetylpiperidin-4-ylmethoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (55), except 1-(4-(hydroxymethyl)piperidin-1-yl)ethan-1-one was replaced with 4-(hydroxymethyl)pyrrolidin-2-one. 1H NMR (400 MHz, DMSO) δ=13.80-13.42 (m, 1H), 8.47 (s, 1H), 8.28 (s, 1H), 8.17 (s, 1H), 7.59 (s, 1H), 7.28 (d, J=8.4 Hz, 2H), 7.04 (d, J=8.8 Hz, 2H), 4.06-3.97 (m, 2H), 3.48-3.40 (m, 1H), 3.13 (d, J=9.6 Hz, 1H), 2.86 (s, 1H), 2.38-2.32 (m, 1H), 2.06 (d, J=16.8 Hz, 1H). LCMS: Rt=0.65 min, m/z=379.1 (M+H).
5-(4-((2-cyanobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (89) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 2-(bromomethyl)benzonitrile. 1H NMR (400 MHz, DMSO) δ=13.67 (br, s, 1H), 8.53 (br, s, 1H), 8.28 (s., 1H), 8.20 (m, 1H), 7.95 (d, J=8.0 Hz, 1H), 7.77 (s., 2H), 7.60 (s., 1H), 7.32 (d, J=8.0 Hz, 2H), 7.16 (d, J=8.0 Hz, 2H), 5.31 (s., 2H). LCMS: Rt=0.81 min, m/z=414.0 (M+H).
2-oxo-5-(4-(tetrazolo[1,5-a]pyridin-7-ylmethoxy)phenyl)-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (90) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 7-(bromomethyl)tetrazolo[1,5-a]pyridine. 1H NMR (400 MHz, DMSO) δ=13.86-13.59 (m, 1H), 14.05-13.38 (m, 1H), 9.36 (d, J=7.2 Hz, 1H), 8.48 (s, 1H), 8.29 (s, 2H), 8.19 (s, 1H), 7.53 (d, J=7.0 Hz, 1H), 7.33 (d, J=8.6 Hz, 2H), 7.19 (d, J=8.8 Hz, 2H), 5.42 (s, 2H). LCMS: Rt=0.68 min, m/z=431.0 (M+H).
5-(4-(imidazo[1,2-a]pyridin-7-ylmethoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (91) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 7-(bromomethyl)imidazo[1,2-a]pyridine. 1H NMR (400 MHz, DMSO) δ=8.57 (d, J=4.0 Hz, 1H), 8.29 (br. s., 2H), 7.96 (s, 1H), 7.89 (br. s., 1H), 7.66 (br. s., 1H), 7.58 (s, 1H), 7.18 (d, J=8.0 Hz, 2H), 7.06 (d, J=8.0 Hz, 2H), 7.00-6.98 (m, 1H), 5.19 (s, 2H). LCMS: Rt=0.61 min, m/z=429.3 (M+H).
5-(4-((1-methylpiperidin-3-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (92) was made using a procedure similar to that used to make 5-(4-((1-acetylpiperidin-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (55), except 1-(4-(hydroxymethyl)piperidin-1-yl)ethan-1-one was replaced with 3-(bromomethyl)-1-methylpiperidine. 1H NMR (400 MHz, DMSO) δ=10.77 (s, 1H), 7.81 (s, 1H), 7.11 (d, J=7.2 Hz, 2H), 7.04 (s, 1H), 6.91 (d, J=7.2 Hz, 2H), 3.85 (d, J=8.0 Hz, 2H), 2.84 (d, J=8.2 Hz, 1H), 2.64 (s, 1H), 2.18 (s, 3H), 2.06-1.87 (m, 2H), 1.85-1.70 (m, 2H), 1.64 (s, 1H), 1.51 (d, J=10.2 Hz, 1H), 1.08 (d, J=8.6 Hz, 1H). LCMS: Rt=0.86 min, m/z=410.0 (M+H).
5-(4-((4-fluoro-3-nitrobenzyloxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (93) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 4-(bromomethyl)-1-fluoro-2-nitrobenzene. 1H NMR (400 MHz, DMSO) δ=13.80-13.54 (m, 1H), 8.47 (s, 1H), 8.33-8.27 (m, 2H), 8.20 (s, 1H), 7.95 (d, J=8.6 Hz, 1H), 7.67 (d, J=11.4 Hz, 1H), 7.31 (d, J=8.6 Hz, 2H), 7.14 (d, J=8.8 Hz, 2H), 5.27 (s, 2H). LCMS: Rt=0.91 min, m/z=452.0 (M+H).
To a solution of 5-(4-((4-fluoro-3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (93) (100 mg, 0.22 mmol, was added sodium azide (43 mg, 0.66 mmol) in NMP (2.2 mL) and the mixture was stirred at 60° C. for 18 hrs. The reaction mixture was poured into water (10 mL), extracted with EA (3 mL×5), dried over Na2SO4, filtered, and concentrated. The crude product was purified by Prep-HPLC under acidic conditions (MeCN/water with TFA) to give 6-((4-(5-carbamoyl-6-oxo-2-(trifluoromethyl)-1,6-dihydropyridin-3-yl)phenoxy)methylbenzo[c][1,2,5]oxadiazole 1-oxide. 1H NMR (400 MHz, DMSO) δ=13.70 (br s, 1H), 8.47 (s, 1H), 8.29 (s, 1H), 8.20 (s, 1H), 7.95-7.45 (m, 3H), 7.32 (d, J=8.4 Hz, 2H), 7.16 (d, J=8.4 Hz, 2H), 5.24 (s, 2H). LCMS: Rt=0.80 min, m/z=447.1 (M+H).
(R or S)-2-oxo-5-(4-(1-(pyrimidin-5-yl)ethoxy)phenyl)-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide; (SFC peak 1, Chiral) (95) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 5-(1-bromoethyl)pyrimidine. 1H NMR (400 MHz, DMSO) δ=10.93-10.62 (m, 1H), 9.13 (s, 1H), 8.91 (s, 2H), 7.84-7.70 (m, 1H), 7.09 (d, J=8.0 Hz, 2H), 6.96 (d, J=8.2 Hz, 2H), 5.74-5.63 (m, 1H), 1.64 (m, 3H). LCMS: Rt=0.66 min, m/z=405.1 (M+H). SFC: Rt=2.21 min, e.e. 91%.
(R or S)-2-oxo-5-(4-(1-(pyrimidin-5-yl)ethoxy)phenyl)-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide; (SFC peak 2, Chiral) (96) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 5-(1-bromoethyl)pyrimidine. 1H NMR (400 MHz, DMSO) δ=9.19 (s, 1H), 8.97 (s, 2H), 8.58-8.50 (m, 1H), 8.32 (s, 1H), 8.28-8.22 (m, 1H), 7.47-7.36 (m, 1H), 7.30 (d, J=8.8 Hz, 2H), 7.14-7.11 (m, 2H), 5.84-5.77 (m, 1H), 1.72 (m, 3H). LCMS: Rt=0.66 min, m/z=405.1 (M+H). SFC: Rt=2.33 min, e.e. 89%.
(R or S)-5-(4-(1-(3-cyanophenyl)ethoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide; (SFC peak 1, Chiral) (97) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 3-(1-bromoethyl)benzonitrile. 1H NMR (400 MHz, DMSO) δ=13.81-13.59 (m, 1H), 8.90-8.55 (m, 1H), 8.20 (s, 1H), 8.12-8.05 (m, 1H), 7.93 (s, 1H), 7.83-7.73 (m, 2H), 7.64-7.56 (m, 1H), 7.20 (d, J=8.0 Hz, 2H), 7.00 (d, J=8.0 Hz, 2H), 5.66 (d, J=4.0 Hz, 1H), 1.60 (s, 3H). LCMS: Rt=1.00 min, m/z=428.0 (M+H). SFC: Rt=2.78 min, e.e. 92%.
(R or S)-5-(4-(1-(3-cyanophenyl)ethoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide; (SFC peak 2, Chiral) (98) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 3-(1-bromoethyl)benzonitrile. 1H NMR (400 MHz, DMSO) δ=7.98-7.94 (m, 1H), 7.93 (s, 1H), 7.79 (d, J=8.0 Hz, 1H), 7.78-7.74 (m, 1H), 7.62-7.56 (m, 1H), 7.16-7.09 (m, 2H), 6.98-6.91 (m, 2H), 5.79-5.54 (m, 1H), 1.58 (d, J=4.0 Hz, 3H). LCMS: Rt=1.00 min, m/z=428.0 (M+H). SFC: Rt=2.98 min, e.e. 97%.
5-(4-((5-cyanopyridin-3-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (99) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 5-(bromomethyl)nicotinonitrile. 1H NMR (400 MHz, DMSO) δ=8.95 (d, J=2.0 Hz, 1H), 8.91 (d, J=1.6 Hz, 1H), 8.39 (s, 1H), 8.35 (s, 1H), 8.27 (s, 1H), 7.31 (d, J=8.8 Hz, 2H), 7.14 (d, J=8.4 Hz, 2H), 5.29 (s, 2H). LCMS: Rt=0.74 min, m/z=415.1 (M+H).
(R or S)-5-(4-(1-(benzo[c][1,2,5]oxadiazol-5-yl)ethoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide; (SFC peak 1, Chiral) (100) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 5-(1-bromoethyl)benzo[c][1,2,5]oxadiazole. 1H NMR (400 MHz, MeOD) δ=8.40 (s, 1H), 8.22 (s, 1H), 8.00-7.88 (m, 2H), 7.66 (d, J=10.2 Hz, 1H), 7.22 (d, J=8.6 Hz, 2H), 7.05 (d, J=8.6 Hz, 2H), 5.65 (d, J=6.0 Hz, 1H), 1.72 (d, J=6.4 Hz, 3H). LCMS: Rt=0.85 min, m/z=445.1 (M+H). SFC: Rt=2.15 min, e.e. 80%.
(R or S)-5-(4-(1-(benzo[c][1,2,5]oxadiazol-5-yl)ethoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide; (SFC peak 2, Chiral) (101) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 5-(1-bromoethyl)benzo[c][1,2,5]oxadiazole. 1H NMR (400 MHz, MeOD) δ=8.22 (s, 1H), 7.95 (s, 1H), 7.93-7.92 (m, 2H), 7.67-7.64 (m, 1H), 7.22 (d, J=8.4 Hz, 2H), 7.05 (d, J=8.4 Hz, 2H), 5.65 (d, J=6.0 Hz, 1H), 1.72 (d, J=6.4 Hz, 3H). LCMS: Rt=0.85 min, m/z=445.1 (M+H). SFC: Rt=2.32 min, e.e. 91%.
2-oxo-5-(4-((tetrahydro-2H-pyran-3-yl)methoxy)phenyl)-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (102) was made using a procedure similar to that used to make 5-(4-((1-acetylpiperidin-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (55), except 1-(4-(hydroxymethyl)piperidin-1-yl)ethan-1-one was replaced with (tetrahydro-2H-pyran-3-yl)methanol. 1H NMR (500 MHz, DMSO) δ=8.45 (br s, 1H), 8.22 (s, 1H), 8.05 (br s, 1H), 7.25 (d, J=8.5 Hz, 2H), 7.01 (d, J=8.6 Hz, 2H), 3.90 (t, J=5.8 Hz, 3H), 3.76 (d, J=11.2 Hz, 1H), 2.02 (s, 1H), 1.87 (d, J=12.9 Hz, 1H), 1.69-1.46 (m, 2H), 1.42 (dd, J=16.7, 6.6 Hz, 2H). LCMS: Rt=0.72 min, m/z=397.2 (M+H).
5-(4-([1,2,4]triazolo[4,3-a]pyrimidin-6-ylmethoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (103) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyloxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 6-(bromomethyl)-[1,2,4]triazolo[4,3-a]pyrimidine. 1H NMR (500 MHz, DMSO) δ=9.61 (s, 1H), 9.08 (s, 1H), 8.72 (s, 1H), 8.33 (s, 2H), 7.86 (s, 1H), 7.30 (s, 1H), 7.19 (d, J=8.0 Hz, 2H), 7.10 (d, J=8.0 Hz, 2H), 5.29 (s, 2H). LCMS: Rt=0.70 min, m/z=431.2 (M+H).
5-(4-((5-chloro-2-fluoropyridin-3-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (104) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 3-(bromomethyl)-5-chloro-2-fluoropyridine. LCMS: Rt=3.23 min, m/z=442.0 (M+H).
5-(4-((5-chloropyridin-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (105) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 2-(bromomethyl)-5-chloropyridine. LCMS: Rt=3.10 min, m/z=424.0 (M+H).
5-(4-((2-methoxypyridin-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (106) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 4-(bromomethyl)-2-methoxypyridine. LCMS: Rt=2.90 min, m/z=420.0 (M+H).
5-(4-((3,5-dimethylisoxazol-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (107) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 4-(bromomethyl)-3,5-dimethylisoxazole. LCMS: Rt=2.90 min, m/z=408.0 (M+H).
5-(4-((2-chloro-5-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (108) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 2-(bromomethyl)-1-chloro-4-nitrobenzene. LCMS: Rt=3.35 min, m/z=488.0 (M+H).
5-(4-((1-methyl-3-(trifluoromethyl)-1H-pyrazol-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (109) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 4-(bromomethyl)-1-methyl-3-(trifluoromethyl)-1H-pyrazole. LCMS: Rt=3.07 min, m/z=461.1 (M+H).
2-oxo-5-(4-(thiophen-3-ylmethoxy)phenyl)-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (110) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 3-(bromomethyl)thiophene. LCMS: Rt=3.18 min, m/z=295.0 (M+H).
2-oxo-6-(trifluoromethyl)-5-(4-((8-(trifluoromethyl)pyridin-3-yl)methoxy)phenyl)-1,2-dihydropyridine-3-carboxamide (111) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 5-(bromomethyl)-2-(trifluoromethyl)pyridine. LCMS: Rt=3.21 min, m/z=458.1 (M+H).
5-(4-((3,4-difluorobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (112) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 4-(bromomethyl)-1,2-difluorobenzene. LCMS: Rt=3.34 min, m/z=425.0 (M+H).
5-(4-((4-methoxy-3,5-dimethylpyridin-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (113) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 2-(bromomethyl)-4-methoxy-3,5-dimethylpyridine. LCMS: Rt=2.39 min, m/z=448.0 (M+H).
5-(4-((3-fluoropyridin-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (114) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 2-(bromomethyl)-3-fluoropyridine. LCMS: Rt=2.82 min, m/z=408.0 (M+H).
2-oxo-5-(4-(thiophen-2-ylmethoxy)phenyl)-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (115) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 2-(bromomethyl)thiophene. LCMS: Rt=3.18 min, m/z=395.0 (M+H).
5-(4-((2,5-difluorobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (116) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 2-(bromomethyl)-1,4-difluorobenzene. LCMS: Rt=3.32 min, m/z=425.0 (M+H).
5-(4-((4-chloropyridin-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (117) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 2-(bromomethyl)-4-chloropyridine. LCMS: Rt=3.01 min, m/z=424.0 (M+H).
5-(4-((2,4-dimethylthiazol-5-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (118) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 5-(bromomethyl)-2,4-dimethylthiazole. LCMS: Rt=2.75 min, m/z=424.1 (M+H).
5-(4-((2-chloropyridin-3-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (119) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 3-(bromomethyl)-2-chloropyridine. LCMS: Rt=3.02 min, m/z=424.0 (M+H).
2-oxo-5-(4-((5-(propylamino)pyridin-3-yl)methoxy)phenyl)-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (120) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 5-(bromomethyl)-N-propylpyridin-3-amine. 1H NMR (400 MHz, DMSO) δ=10.72 (s, 1H), 7.92 (d, J=2.4 Hz, 1H), 7.83 (d, J=10.8 Hz, 2H), 7.14 (d, J=8.4 Hz, 2H), 7.05-6.93 (m, 4H), 5.94 (s, 1H), 5.04 (s, 2H), 3.88 (s, 1H), 3.00 (q, J=6.7 Hz, 2H), 1.65-1.49 (m, 2H), 0.94 (m, 3H). LCMS: Rt=0.93 min, m/z=447.0 (M+H).
2-oxo-5-(4-(pyrimidin-2-ylmethoxy)phenyl)-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (121) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 2-(bromomethyl)pyrimidine. 1H NMR (400 MHz, DMSO) δ=8.86 (d, J=5.2 Hz, 2H), 8.85 (s, 1H), 8.25 (s, 1H), 8.14 (s, 1H), 7.49 (t, J=4.8 Hz, 1H), 7.25 (d, J=8.4 Hz, 2H), 7.06 (d, J=8.4 Hz, 2H), 5.33 (s, 2H). LCMS: Rt=0.63 min, m/z=391.0 (M+H).
5-(4-((2-morpholinopyrimidin-5-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (122) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 4-(5-(bromomethyl)pyrimidin-2-yl)morpholine. 1H NMR (400 MHz, DMSO) δ=9.84 (m, 1H), 8.53 (s, 2H), 8.26 (s, 1H), 7.98 (s, 1H), 7.47 (br s, 1H), 7.19 (d, J=8.4 Hz, 2H), 7.04 (d, J=8.4 Hz, 2H), 4.98 (s, 2H), 3.80 (m, 4H), 3.67 (m, 4H). LCMS: Rt=0.72 min, m/z=476.1 (M+H).
2-oxo-5-(4-(pyrazin-2-ylmethoxy)phenyl)-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (123) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 2-(bromomethyl)pyrazine. 1H NMR (400 MHz, DMSO) δ=10.79 (br s, 1H), 8.86 (m, 1H), 8.82 (s, 1H), 8.72-8.67 (m, 1H), 8.67-8.62 (m, 1H), 7.80 (s, 1H), 7.75 (m, 1H), 7.16 (d, J=8.8 Hz, 2H), 7.06 (d, J=8.8 Hz, 2H), 5.28 (s, 2H). LCMS: Rt=0.65 min, m/z=391.1 (M+H).
(R or S)-5-(4-(1-(5-cyanopyridin-3-yl)ethoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide; (SFC peak 1, Chiral) (124) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyloxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 5-(1-bromoethyl)nicotinonitrile. 1H NMR (400 MHz, DMSO) δ=9.33-9.09 (m, 1H), 8.96 (d, J=1.8 Hz, 2H), 8.42 (t, J=2.0 Hz, 1H), 8.10 (s, 1H), 7.82 (s, 1H), 7.19 (d, J=8.0 Hz, 2H), 7.02 (d, J=8.0 Hz, 2H), 5.73 (d, J=8.0 Hz, 1H), 1.63 (d, J=8.0 Hz, 3H), 1.68-1.58 (m, 1H). LCMS: Rt=0.91 min, m/z=429.1 (M+H). SFC: Rt=2.29 min, e.e. 100%.
(R or S)-5-(4-(1-(5-cyanopyridin-3-yl)ethoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide; (SFC peak 2, Chiral) (125) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 5-(1-bromoethyl)nicotinonitrile. 1H NMR (400 MHz, DMSO) δ=9.17 (s, 1H), 8.96 (d, J=1.6 Hz, 2H), 8.42 (s, 1H), 8.11 (s, 1H), 7.83 (s, 1H), 7.19 (d, J=8.0 Hz, 2H), 7.02 (d, J=8.0 Hz, 2H), 5.74 (d, J=6.0 Hz, 1H), 1.63 (d, J=6.4 Hz, 3H). LCMS: Rt=0.91 min, m/z=429.1 (M+H). SFC: Rt=3.29 min, e.e. 92%.
5-(4-((1-methyl-1H-pyrazol-5-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (126) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyloxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 5-(bromomethyl)-1-methyl-1H-pyrazole. 1H NMR (400 MHz, DMSO) δ=13.64 (s, 1H), 8.46 (s, 1H), 8.28 (s, 1H), 8.17 (s, 1H), 7.39 (d, J=1.6 Hz, 1H), 7.30 (d, J=8.4 Hz, 2H), 7.15 (d, J=8.8 Hz, 2H), 6.40 (d, J=1.6 Hz, 1H), 5.23 (s, 2H), 3.85 (s, 3H). LCMS: Rt=0.66 min, m/z=393.1 (M+H).
5-(4-((4-methoxypyridin-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (127) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 2-(bromomethyl)-4-methoxypyridine. LCMS: Rt=2.29 min, m/z=420.1 (M+H).
5-(4-((8-morpholinopyridin-3-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (128) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 4-(5-(bromomethyl)pyridin-2-yl)morpholine. LCMS: Rt=2.34 min, m/z=475.2 (M+H).
5-(4-((2-fluoropyridin-3-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (129) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 3-(bromomethyl)-2-fluoropyridine. LCMS: Rt=2.94 min, m/z=408.1 (M+H).
5-(4-((5-fluoro-2-methoxypyridin-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (130) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 4-(bromomethyl)-5-fluoro-2-methoxypyridine. LCMS: Rt=3.16 min, m/z=438.1 (M+H).
2-oxo-5-(4-(quinoxalin-6-ylmethoxy)phenyl)-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (131) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 6-(bromomethyl)quinoxaline. LCMS: Rt=2.93 min, m/z=441.1 (M+H).
5-(4-((1-methyl-1H-indazol-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (132) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 4-(bromomethyl)-1-methyl-1H-indazole. LCMS: Rt=3.06 min, m/z=443.1 (M+H).
5-(4-((4-(methylsulfonyl)benzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (133) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 1-(bromomethyl)-4-(methylsulfonyl)benzene. LCMS: Rt=2.85 min, m/z=487.1 (M+H).
2-oxo-5-(4-(thiazol-5-ylmethoxy)phenyl)-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (134) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 5-(bromomethyl)thiazole. LCMS: Rt=2.71 min, m/z=396.1 (M+H).
5-(4-((4,6-dimethylpyridin-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (135) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 2-(bromomethyl)-4,6-dimethylpyridine. LCMS: Rt=2.30 min, m/z=418.2 (M+H).
5-(4-((2-methoxypyridin-3-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (136) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 3-(bromomethyl)-2-methoxypyridine. LCMS: Rt=3.08 min, m/z=420.1 (M+H).
5-(4-(isoquinolin-7-ylmethoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (137) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 7-(bromomethyl)isoquinoline. LCMS: Rt=2.45 min, m/z=440.1 (M+H).
2-oxo-5-(4-(quinolin-7-ylmethoxy)phenyl)-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (138) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 7-(bromomethyl)quinoline. LCMS: Rt=2.44 min, m/z=440.1 (M+H).
5-(4-((3-fluoropyridin-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (139) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 4-(bromomethyl)-3-fluoropyridine. LCMS: Rt=2.76 min, m/z=408.1 (M+H).
5-(4-((4,6-dimethylpyrimidin-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (140) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 2-(bromomethyl)-4,6-dimethylpyrimidine. LCMS: Rt=2.67 min, m/z=419.1 (M+H).
5-(4-((1-methyl-1H-imidazol-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (141) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 2-(bromomethyl)-1-methyl-1H-imidazole. LCMS: Rt=2.10 min, m/z=393.1 (M+H).
5-(4-((2-morpholinopyridin-3-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (142) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 4-(3-(bromomethyl)pyridin-2-yl)morpholine. LCMS: Rt=2.56 min, m/z=475.1 (M+H).
2-oxo-5-(4-(thiazol-2-ylmethoxy)phenyl)-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (143) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 2-(bromomethyl)thiazole. LCMS: Rt=2.82 min, m/z=396.1 (M+H).
5-(4-((3,4-dimethoxypyridin-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (144) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 2-(bromomethyl)-3,4-dimethoxypyridine. LCMS: Rt=2.31 min, m/z=450.1 (M+H).
5-(4-((1-methyl-1H-indazol-5-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (145) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 5-(bromomethyl)-1-methyl-1H-indazole. LCMS: Rt=3.06 min, m/z=443.1 (M+H).
5-(4-((5-methoxypyridin-3-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (146) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 3-(bromomethyl)-5-methoxypyridine. LCMS: Rt=2.37 min, m/z=420.1 (M+H).
5-(4-((2,6-dimethylpyridin-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (147) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 4-(bromomethyl)-2,6-dimethylpyridine. LCMS: Rt=2.32 min, m/z=418.1 (M+H).
5-(4-((6-chlorobenzo[d][1,3]dioxol-5-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (148) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 5-(bromomethyl)-6-chlorobenzo[d][1,3]dioxole. LCMS: Rt=3.03 min, m/z=467.1 (M+H).
5-(4-((3,4-dihydro-2H-benzo[b][1,4]dioxepin-7-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (149) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 7-(bromomethyl)-3,4-dihydro-2H-benzo[b][1,4]dioxepine. LCMS: Rt=1.80 min, m/z=461.1 (M+H).
To a solution of 5-(4-((2-chloropyrimidin-5-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carbonitrile (50 mg, 0.12 mmol), acetaldoxime (14.5 mg, 0.25 mmol), PPh3 (0.48 mg, 0.02 mmol) in EtOH (1 mL) and H2O (0.5 mL) was added Pd(OAc)2 (2 mg, 0.01 mmol) at 25° C. The mixture was stirred at 80° C. for 1 hr. The reaction mixture was filtered and purified by prep-HPLC (acid) to give 5-(4-((2-hydroxypyrimidin-5-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (150). 1H NMR (400 MHz, DMSO) δ=10.18 (br s, 1H) 8.43 (s, 2H), 8.25 (s, 1H), 7.91 (s, 1H), 7.32-7.31 (m, 1H), 7.19 (d, J=8.4 Hz, 2H), 7.03 (d, J=8.4 Hz, 2H), 4.88 (s, 2H). LCMS: Rt=0.56 min, m/z=406.9 (M+H).
5-(4-((2-chloropyrimidin-5-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carbonitrile was obtained using a procedure similar to that used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 5-(bromomethyl)-2-chloropyrimidine, and 5-bromo-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide was replaced with 5-bromo-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carbonitrile. LCMS: Rt=0.80 min, m/z=406.8 (M+H).
Step 1: To a solution of oxetan-3-ylmethanol (163 mg, 1.84 mmol) in THF (1 mL) was added tBuONa (53 mg, 0.55 mmol) and the mixture was stirred at 25° C. for 15 min. 5-(4-((2-chloropyrimidin-5-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carbonitrile (150 mg, 0.37 mmol) in THF (1 mL) was then added via syringe and the mixture stirred at 50° C. for 10 min under microwave. The reaction mixture was poured into water (10 mL) and extracted with chloroform/isopropanol=3/1 (10 mL×2). The organic layers were combined and dried over anhydrous Na2SO4, filtered and concentrated to give crude 5-(4-((2-(oxetan-3-ylmethoxy)pyrimidin-5-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carbonitrile which was used for next step without further purification. LCMS: Rt=0.90 min, m/z=459.1 [M+H].
Step 2: To a solution of 5-(4-((2-(oxetan-3-ylmethoxy)pyrimidin-5-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carbonitrile (0.2 g, 0.44 mmol), acetaldoxime (52 mg, 0.87 mmol), PPh3 (23 mg, 0.08 mmol) in the mixture of EtOH (3 mL) and H2O (1 mL) was added Pd(OAc)2 (10 mg, 0.04 mmol) at 25° C. under N2. The mixture was heated to 80° C. and stirred for 3 hr. The reaction mixture was filtered, concentrated and purified by prep-HPLC (base) to give 5-(4-((2-(oxetan-3-ylmethoxy)pyrimidin-5-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (151). 1H NMR (400 MHz, DMSO-d6) δ 10.75 (br. s, 1H), 8.74 (s, 2H), 7.80 (s, 1H), 7.16 (d, J=8.8 Hz, 2H), 7.02 (d, J=8.8 Hz, 2H), 5.08 (s, 2H), 4.72 (m, 2H), 4.55 (m, 2H), 4.45 (m, 2H); LCMS: Rt=0.70 min, m/z=477.1 [M+H].
5-(4-((2-(2-hydroxyethoxy)pyrimidin-5-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (152) was made using a procedure similar to that used to make 5-(4-((2-(oxetan-3-ylmethoxy)pyrimidin-5-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (151), except oxetan-3-ylmethanol was replaced with ethane-1,2-diol. 1H NMR (400 MHz, DMSO-d6) δ 9.61 (br., s, 1H), 8.73 (s, 2H), 8.24 (br., s, 1H), 8.02 (s, 1H), 7.57 (br., s, 1H), 7.22 (d, J=7.6 Hz, 2H), 7.08 (d, J=7.6 Hz, 2H), 5.10 (s, 2H), 4.34 (s, 2H), 3.73 (s, 1H); LCMS: Rt=0.69 min, m/z=451.0 [M+H].
2-oxo-5-(4-((2-propoxypyrimidin-5-yl)methoxy)phenyl)-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (153) was made using a procedure similar to that used to make 5-(4-((2-(oxetan-3-ylmethoxy)pyrimidin-5-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (151), except oxetan-3-ylmethanol was replaced with propan-1-ol. 1H NMR (400 MHz, DMSO-d6) δ 9.49 (br. s, 1H), 8.73 (s, 2H), 8.19 (s, 1H), 8.05 (s, 1H), 7.64 (br.s, 1H), 7.24 (d, J=8.4 Hz, 2H), 7.08 (d, J=8.4 Hz, 2H), 5.10 (s, 2H), 4.29 (m, 2H), 1.77 (m, 2H), 0.99 (m, 3H); LCMS: Rt=0.80 min, m/z=449.1 [M+H].
2-oxo-5-(4-((2-((tetrahydrofuran-3-yl)oxy)pyrimidin-5-yl)methoxy)phenyl)-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (154) was made using a procedure similar to that used to make 5-(4-((2-(oxetan-3-ylmethoxy)pyrimidin-5-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (151), except oxetan-3-ylmethanol was replaced with tetrahydrofuran-3-ol. 1H NMR (400 MHz, DMSO-d6) δ 8.75 (s, 2H), 8.22 (s, 1H), 8.02 (s, 1H), 7.29 (d, J=8.4 Hz, 2H), 7.13 (d, J=8.4 Hz, 2H), 5.52 (m, 1H), 5.13 (s, 2H), 3.94-3.79 (m, 4H), 2.27 (m, 1H), 2.06 (m, 1H); LCMS: Rt=0.66 min, m/z=477.1 [M+H].
5-(4-((2-(cyclopentyloxy)pyrimidin-5-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (155) was made using a procedure similar to that used to make 5-(4-((2-(oxetan-3-ylmethoxy)pyrimidin-5-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (151), except oxetan-3-ylmethanol was replaced with cyclopentanol. 1H NMR (400 MHz, DMSO-d6) δ 10.70 (br., s, 1H), 8.71 (s, 2H), 7.82 (s, 1H), 7.17 (d, J=8.4 Hz, 2H), 7.04 (d, J=8.8 Hz, 2H), 5.39 (m, 2H), 5.07 (s, 2H), 1.99 (m, 2H), 1.76-1.71 (m, 4H), 1.61 (m, 2H); LCMS: Rt=0.91 min, m/z=497.1 [M+H].
5-(4-((2-(oxetan-2-ylmethoxy)pyrimidin-5-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (156) was made using a procedure similar to that used to make 5-(4-((2-(oxetan-3-ylmethoxy)pyrimidin-5-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (151), except oxetan-3-ylmethanol was replaced with oxetan-2-ylmethanol. 1H NMR (400 MHz, DMSO-d6) δ 10.75 (s, 1H), 8.74 (s, 2H), 7.80 (s, 1H), 7.16 (d, J=8.8 Hz, 2H), 7.02 (d, J=8.8 Hz, 2H), 5.08 (s, 2H), 4.72 (m, 2H), 4.55 (m, 2H), 4.45 (m, 2H); LCMS: Rt=0.70 min, m/z=477.1 [M+H].
2-oxo-5-(4-((2-((tetrahydrofuran-3-yl)methoxy)pyrimidin-5-yl)methoxy)phenyl)-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (157) was made using a procedure similar to that used to make 5-(4-((2-(oxetan-3-ylmethoxy)pyrimidin-5-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (151), except oxetan-3-ylmethanol was replaced with (tetrahydrofuran-3-yl)methanol. 1H NMR (400 MHz, DMSO-d6) δ 8.96 (br. s, 1H), 8.74 (s, 2H), 8.17 (br. s, 1H), 7.96 (s, 1H), 7.28 (d, J=8.4 Hz, 2H), 7.11 (d, J=8.4 Hz, 2H), 5.12 (s, 2H), 4.30-4.23 (m, 2H), 3.81-3.76 (m, 2H), 3.66-3.60 (m, 2H), 2.71 (m, 1H), 2.03 (m, 1H), 1.68 (m, 1H); LCMS: Rt=0.68 min, m/z=491.1 [M+H].
Step 1: To a solution of 5-(4-((2-chloropyrimidin-5-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carbonitrile (80 mg, 0.2 mmol) in DMF (1 mL) was added methanamine (8 mg, 0.24 mmol) and Et3N (40 mg, 0.4 mmol) at 25° C. The mixture was stirred at 50° C. for 12 hrs. The mixture was washed with H2O (1 mL) and extracted with EA (1 mL×2). The combined organic layers were dried over anhydrous Na2SO4, filtered and concentrated. The residue was purified by reverse phase prep-HPLC to give 5-(4-((2-(methylamino)pyrimidin-5-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carbonitrile. LCMS: Rt=0.71 min, m/z=402.0 [M+H].
Step 2: To a solution of 5-(4-((2-(methylamino)pyrimidin-5-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carbonitrile (0.18 g, 0.44 mmol), acetaldoxime (52 mg, 0.87 mmol), PPh3 (23 mg, 0.08 mmol) in the mixture of EtOH (3 mL) and H2O (1 mL) was added Pd(OAc)2 (10 mg, 0.04 mmol) at 25° C. under N2. The mixture was heated to 80° C. and stirred for 3 hr. The reaction mixture was filtered, concentrated and purified by prep-HPLC (base) to give 5-(4-((2-(methylamino)pyrimidin-5-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (158). 1H NMR (400 MHz, DMSO-d6) δ 10.20 (br. s, 1H), 8.40 (s, 2H), 8.29 (br. s, 1H), 8.32-8.26 (m, 1H), 7.89 (s, 1H), 7.16 (d, J=8.4 Hz, 2H), 7.01 (d, J=8.4 Hz, 2H), 4.92 (s, 2H), 2.81 (d, J=4.8 Hz, 3H); LCMS: Rt=0.62 min, m/z=420.1 [M+H].
5-(4-((2-(cyclopentylamino)pyrimidin-5-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (159) was made using a procedure similar to that used to make 5-(4-((2-(methylamino)pyrimidin-5-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (158), except methanamine was replaced with cyclopentanamine. 1H NMR (400 MHz, DMSO) δ=8.41 (s, 2H), 8.39 (m, 1H), 7.31 (d, J=7.6 Hz, 1H), 7.25 (d, J=8.0 Hz, 2H), 7.07 (d, J=8.4 Hz, 2H), 4.93 (s, 2H), 4.19-4.14 (m, 1H), 1.90-1.88 (m, 2H), 1.68-1.49 (m, 2H), 1.15-0.87 (m, 5H). LCMS: Rt=0.76 min, m/z=474.0 (M+H).
5-(4-((2-(dimethylamino)pyrimidin-5-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (160) was made using a procedure similar to that used to make 5-(4-((2-(methylamino)pyrimidin-5-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (158), except methanamine was replaced with dimethylamine. 1H NMR (400 MHz, DMSO-d6) δ 8.47 (s, 2H), 8.27 (m, 1H), 7.88 (s, 1H), 7.16 (d, J=8.4 Hz, 2H), 7.01 (d, J=8.4 Hz, 2H), 4.94 (s, 2H), 3.13 (s, 6H); LCMS: Rt=0.75 min, m/z=434.0 [M+H].
5-(4-((2-((cyclopropylmethyl)amino)pyrimidin-5-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (161) was made using a procedure similar to that used to make 5-(4-((2-(methylamino)pyrimidin-5-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (158), except methanamine was replaced with cyclopropylmethanamine. 1H NMR (400 MHz, DMSO-d6) δ 9.83 (br. s, 1H), 8.17 (br. s, 2H), 8.02 (s, 1H), 7.73 (br. s, 1H), 7.25-7.08 (m, 2H), 7.04-6.88 (m, 2H), 6.96 (d, J=8.0 Hz, 1H), 6.81 (d, J=8.0 Hz, 1H), 4.79-4.62 (m, 2H), 2.95 (s, 2H), 0.85 (s, 1H), 0.19 (d, J=5.9 Hz, 2H), 0.00 (s, 2H); LCMS: Rt=0.78 min, m/z=460.0 [M+H].
5-(4-((2-((2-hydroxyethyl)amino)pyrimidin-5-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (162) was made using a procedure similar to that used to make 5-(4-((2-(methylamino)pyrimidin-5-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (158), except methanamine was replaced with 2-aminoethan-1-ol. 1H NMR (400 MHz, DMSO-d6) δ 8.40 (s, 2H), 8.07 (br. s, 1H), 7.66 (br. s, 1H), 7.23 (m, 1H), 7.16 (m, 2H), 4.93 (s, 2H), 4.68 (br.s, 1H), 3.51 (br.s, 2H), 3.38 (m, 2H); LCMS: Rt=0.62 min, m/z=450.1 [M+H].
5-(4-((2-(cyclopropylamino)pyrimidin-5-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (163) was made using a procedure similar to that used to make 5-(4-((2-(methylamino)pyrimidin-5-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (158), except methanamine was replaced with cyclopropanamine. LCMS: Rt=0.64 min, m/z=448.1 [M+H].
5-(4-((2-(heptylamino)pyrimidin-5-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (164) was made using a procedure similar to that used to make 5-(4-((2-(methylamino)pyrimidin-5-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (158), except methanamine was replaced with heptan-1-amine. LCMS: Rt=0.96 min, m/z=504.4 [M+H].
5-(4-((2-(oxetan-3-ylamino)pyrimidin-5-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (165) was made using a procedure similar to that used to make 5-(4-((2-(methylamino)pyrimidin-5-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (158), except methanamine was replaced with oxetan-3-amine. 1H NMR (400 MHz, DMSO-d6) δ=10.54 (br. s, 1H), 8.42 (s, 2H), 8.03 (d, J=5.8 Hz, 1H), 7.83 (s, 1H), 7.15 (d, J=8.6 Hz, 2H), 7.00 (d, J=8.6 Hz, 2H), 4.92 (s, 2H), 4.77 (t, J=6.4 Hz, 2H), 4.51 (t, J=6.4 Hz, 2H), 1.23 (s, 1H); LCMS: Rt=0.63 min, m/z=462.1 [M+H].
2-oxo-5-(4-((2-((tetrahydrofuran-3-yl)amino)pyrimidin-5-yl)methoxy)phenyl)-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (166) was made using a procedure similar to that used to make 5-(4-((2-(methylamino)pyrimidin-5-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (158), except methanamine was replaced with tetrahydrofuran-3-amine. 1H NMR (400 MHz, DMSO-d6) δ=8.42 (s, 2H), 7.94 (s, 1H), 7.53 (d, J=6.4 Hz, 1H), 7.18 (d, J=8.2 Hz, 2H), 7.03 (d, J=8.8 Hz, 2H), 4.93 (s, 2H), 4.39 (d, J=7.2 Hz, 1H), 3.91-3.82 (m, 3H), 3.76-3.67 (m, 2H), 3.55 (d, J=8.6 Hz, 1H), 2.18-2.11 (m, 1H), 1.88 (t, J=12.4 Hz, 1H); LCMS: Rt=0.64 min, m/z=476.1 [M+H].
Step 1: (6-fluoropyridin-3-yl)methanol (300 mg, 2.36 mmol), 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenol (623 mg, 2.83 mmol) and triphenylphosphine (805 mg, 3.07 mmol) were added to an oven-dried 40 mL vial with a sitrbar and the vial was sealed with a septa-top vial and purged with vac/N2. THF (7.9 mL) was added and the reaction was cooled to 0 C. DEAD (448 μl, 2.83 mmol) was added dropwise and the reaction mixture was allowed to warm to room temperature and was then stirred overnight. The reaction mixture was concentrated in vacuo and purified by silica gel chromatography (ISCO, 0-40% EtOAc/Hept) to give 2-fluoro-5-((4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenoxy)methyl)pyridine. LCMS Rt=1.04 min, m/z=330.3 [M+H]+.
Step 2: To an oven-dried 4 mL vial with a stirbar was added 2-fluoro-5-((4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenoxy)methyl)pyridine (39 mg, 0.08 mmol). The vial was sealed with a septa top cap and purged with vac/N2 (×3). DMSO (0.45 mL) and cyclopentanamine (0.16 mL, 1.66 mmol) were added and the reaction mixture was heated to 80° C. and stirred overnight. The reaction mixture was diluted with EA, washed with water and brine, dried over Na2SO4, filtered and concentrated in vacuo. The residue was purified by silica gel chromatography (ISCO, 0-50% EA/heptane) to give N-cyclopentyl-5-((4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenoxy)methyl)pyridin-2-amine. LCMS t=1.03, m/z=395.3 [M+H].
Step 3: To a 4 mL vial with stirbar was added N-cyclopentyl-5-((4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenoxy)methyl)pyridin-2-amine (13 mg, 0.033 mmol, 5-bromo-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (11.28 mg, 0.040 mmol, Tripotassium phosphate (20.99 mg, 0.099 mmol) and (dtbpf)PdCl2 (2.149 mg, 3.30 μmol) and the reaction vial sealed with a septa top cap and purged with vac/N2 (×3). Dioxane (247 μl) and water (82 μl) were added and the reaction mixture was heated to 65° C. and stirred overnight. The reaction mixture was diluted with EtOAc, filtered and concentrated in vacuo. The crude product was purified by prep-HPLC to give 5-(4-((6-(cyclopentylamino)pyridin-3-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (167). 1H NMR (500 MHz, DMSO-d6) δ 13.65 (br. s, 1H), 8.43 (br. s, 1H), 8.26 (s, 1H), 8.16 (br. s, 1H), 8.06 (d, J=2.1 Hz, 1H), 7.87 (d, J=9.3 Hz, 1H), 7.30 (d, J=8.7 Hz, 2H), 7.10 (d, J=8.7 Hz, 2H), 6.93 (br. s, 1H), 5.03 (s, 2H), 4.04 (dt, J=10.8, 6.2 Hz, 1H), 1.99 (dq, J=12.9, 6.6, 6.0 Hz, 2H), 1.74-1.65 (m, 2H), 1.63-1.47 (m, 4H). LCMS: Rt=0.72 min, m/z=473.3 [M+H].
5-(4-((6-((cyclopropylmethyl)amino)pyridin-3-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (168) was made using a procedure similar to that used to make 5-(4-((6-(cyclopentylamino)pyridin-3-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (167), except cyclopentanamine was replaced with cyclopropylmethanamine. 1H NMR (500 MHz, DMSO-d6) δ 13.61 (br. s, 1H), 8.44 (br. s, 1H), 8.26 (s, 1H), 8.17 (br. s, 1H), 8.06 (d, J=2.2 Hz, 1H), 7.87 (br. d, J=9.1 Hz, 1H), 7.34-7.21 (m, 2H), 7.18-7.04 (m, 2H), 6.97 (br. s, 1H), 5.02 (s, 2H), 3.19 (dd, J=7.1, 2.9 Hz, 2H), 1.16-1.05 (m, 1H), 0.64-0.39 (m, 2H), 0.28 (dt, J=6.1, 4.3 Hz, 2H). LCMS: Rt=0.67 min, m/z=459.3 [M+H].
Step 1: 5-(4-((6-fluoropyridin-3-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide was obtained using the procedure described in step 3 of Example 167, except N-cyclopentyl-5-((4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenoxy)methyl)pyridin-2-amine was replaced with 2-fluoro-5-((4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenoxy)methyl)pyridine. LCMS: Rt=0.93 min, m/z=408.1 [M+H].
Step 2: To an oven dried 4 mL vial was added 5-(4-((6-fluoropyridin-3-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (20 mg, 0.029 mmol), 3,3-difluoroazetidine hydrochloride (7.63 mg, 0.059 mmol) and potassium carbonate (16.29 mg, 0.118 mmol) and the vial was sealed with a septa-top cpa and purged with vac/N2 (×3). DMSO (295 μl) was added and the reaction mixture was heated to 120° C. and stirred overnight. The reaction mixture was diluted with DCM, filtered and concentrated. The crude product was purified by prep-HPLC to give 5-(4-((6-(3,3-difluoroazetidin-1-yl)pyridin-3-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (169). 1H NMR (500 MHz, DMSO-d6) δ 13.63 (br. s, 1H), 8.45 (br. s, 1H), 8.29-8.25 (m, 2H), 8.17 (br. s, 1H), 7.76 (dd, J=8.5, 2.3 Hz, 1H), 7.30-7.23 (m, 2H), 7.13-7.04 (m, 2H), 6.64 (d, J=8.5 Hz, 1H), 5.05 (s, 2H), 4.40 (t, J=12.5 Hz, 4H); LCMS: Rt=0.81 min, m/z=481.1 [M+H].
The title compound was prepared according to the procedure for example 167 was made using a procedure similar to that used to make 5-(4-((6-(3,3-difluoroazetidin-1-yl)pyridin-3-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (169), except difluoroazetidine hydrochloride was replaced with 3-methoxyazetidine hydrochloride. 1H NMR (500 MHz, DMSO-d6) δ 13.68 (br. s, 1H), 8.44 (br. s, 1H), 8.26 (s, 1H), 8.19-8.14 (m, 2H), 7.84 (br. s, 1H), 7.36-7.21 (m, 2H), 7.12-7.05 (m, 2H), 6.66 (s, 1H), 5.03 (s, 2H), 4.38-4.32 (m, 1H), 4.28 (t, J=8.5 Hz, 2H), 3.90 (d, J=8.5 Hz, 2H), 3.26 (s, 3H); LCMS: Rt=0.72 min, m/z=475.1 [M+H].
5-(4-((2-cyclopropylpyrimidin-5-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (171) was obtained using the procedures of step 1 and step 3 in Example 167, except (6-fluoropyridin-3-yl)methanol was replaced with (2-cyclopropylpyrimidin-5-yl)methanol, and N-cyclopentyl-5-((4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenoxy)methyl)pyridin-2-amine was replaced with 2-cyclopropyl-5-((4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenoxy)methyl)pyrimidine. LCMS: Rt=0.80 min, m/z=431.1 [M+H].
Note (2-cyclopropylpyrimidin-5-yl)methanol was obtained u using the following procedure:
Step 1: To a 50 mL 2 necked flask with a stirbar, oven dried and cooled under argon, was added methyl 3,3-dimethoxypropanoate (0.71 mL, 5.0 mmol), methyl formate (0.74 mL, 12.0 mmol) and DME (10.0 mL). Sodium hydride (260 mg, 6.50 mmol) was added as a single portion and the reaction heated to 50° C. for 1 h. The reaction mixture was then cooled to rt and stirred overnight. The resulting suspension was diluted with Et2O, filtered giving and dried under vacuum to give sodium 2-(dimethoxymethyl)-3-methoxy-3-oxoprop-1-en-1-olate which was used without further purification. LCMS Rt=0.28 min, no ionization.
Step 2: To an oven dried 4 mL vial with a stirbar was added sodium 2-(dimethoxymethyl)-3-methoxy-3-oxoprop-1-en-1-olate (238 mg, 1.20 mmol) and cyclopropanecarboximidamide hydrochloride (121 mg, 1.00 mmol). The reaction vial was sealed with a septa-top cap and purged with vac/N2 (×3). DMF (1.0 mL) was added and the reaction was heated to 120° C. for 1 h. The reaction was diluted with DCM and filtered through a plug of Celite®. Following concentration in vacuo to give methyl 2-cyclopropylpyrimidine-5-carboxylate which was used in the without further purification. LCMS Rt=0.57 min, m/z=179.4 [M+H].
Step 3: To an oven dried 20 mL vial with a stirbar was added methyl 2-cyclopropylpyrimidine-5-carboxylate (166 mg, 0.93 mmol), and the reaction vial sealed with a septa-top cap and purged with vac/N2 via needle (×3). THF (4.7 mL) was added and the reaction was cooled to −78° C. DIBAL-H (1.0 M in PhMe, 2.05 ml, 2.05 mmol) was then added dropwise and then the reaction mixture was allowed to slowly warm to rt in a cooling bath overnight. The reaction was quenched by addition of an aqueous solution of Rochelle's salt, diluted with EA and stirred vigorously for 30 mins. The layers were separated and the aqueous layer was extracted into EA. The combined organic layers were washed with brine, dried over Na2SO4, filtered and concentrated in vacuo. Purification by silica gel chromatography (ISCO, 50-100% EA/heptane) gave (2-cyclopropylpyrimidin-5-yl)methanol. LCMS Rt=0.29 min, m/z=151.1 [M+H].
5-(4-((2-(cyclopentylmethyl)pyrimidin-5-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (172) was obtained using the procedures of step 1 and step 3 in Example 167, except (6-fluoropyridin-3-yl)methanol was replaced with (2-(cyclopentylmethyl)pyrimidin-5-yl)methanol, and N-cyclopentyl-5-((4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenoxy)methyl)pyridin-2-amine was replaced with 2-(cyclopentylmethyl)-5-((4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenoxy)methyl)pyrimidine. LCMS: Rt=0.90 min, m/z=473.3 [M+H].
5-(4-((2-neopentylpyrimidin-5-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (173) was obtained using the procedures of step 1 and step 3 in Example 167, except (6-fluoropyridin-3-yl)methanol was replaced with ((2-neopentylpyrimidin-5-yl)methanol, and N-cyclopentyl-5-((4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenoxy)methyl)pyridin-2-amine was replaced with 2-neopentyl-5-((4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenoxy)methyl)pyrimidine. 1H NMR (500 MHz, DMSO-d6) δ 13.63 (br, s, 1H), 8.86 (s, 2H), 8.55 (br. s, 1H), 8.25 (s, 2H), 8.11 (br. s, 1H), 7.30 (d, J=8.6 Hz, 2H), 7.18-7.09 (m, 2H), 5.19 (s, 2H), 2.79 (s, 2H), 0.96 (s, 9H). LCMS: Rt=0.90 min, m/z=473.3 [M+H].
5-(4-((4-(cyclopentylamino)pyrimidin-5-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (174). 1H NMR (400 MHz, DMSO-d6) δ 10.55 (s, 1H), 8.44 (s, 1H), 8.31 (s, 1H), 8.17 (s, 1H), 7.84 (s, 1H), 7.17 (d, J=8.6 Hz, 2H), 7.09 (s, 1H), 7.02 (d, J=8.8 Hz, 2H), 6.77 (d, J=7.2 Hz, 1H), 5.00 (s, 2H), 4.44 (d, J=7.0 Hz, 1H), 1.95 (d, J=6.2 Hz, 2H), 1.70 (s, 2H), 1.54 (s, 4H); LCMS: Rt=0.64 min, m/z=474.1 [M+H].
N-cyclopentyl-5-((4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenoxy)methyl)pyrimidin-4-amine, was obtained using the procedures of step 1 and step 3 in Example 167:
LCMS: Rt 0.821 min, m/z 396.1 [M+H].
Step 1: To a solution of cyclopentanamine (456 mg, 5.36 mmol) in THF (10 mL) was added ethyl 4-chloropyrimidine-5-carboxylate (1.0 g, 5.36 mmol) at 0° C. followed by Et3N (1.08 g, 10.7 mmol. The mixture was then stirred at 25° C. for 3 hr. The reaction mixture was poured into water (10 ml) and then extracted with EA (10 mL×2). The combined organic layers were dried over anhydrous Na2SO4, filtered and concentrated to give crude product which was purified by flash column chromatography to give ethyl 4-(cyclopentylamino)pyrimidine-5-carboxylate. TLC: PE/EA=3/1, Rf=0.2; 1H NMR (400 MHz, DMSO-d6) δ 8.66 (d, J=7.0 Hz, 1H), 8.14 (d, J=6.8 Hz, 1H), 4.49-4.36 (m, 1H), 4.30 (q, J=7.2 Hz, 2H), 2.05-1.94 (m, 2H), 1.75-1.55 (m, 4H), 1.49 (td, J=6.1, 12.1 Hz, 2H), 1.31 (t, J=7.1 Hz, 3H).
Step 2: (4-(cyclopentylamino)pyrimidin-5-yl)methanol was obtained using the method of step 3 in Example 171. LCMS: Rt 0.544 min, m/z 194.1 [M+H].
5-(4-((3-(cyclopropylmethyl)-3H-imidazo[4,5-b]pyridin-6-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (175) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 6-bromo-3-(cyclopropylmethyl)-3H-imidazo[4,5-b]pyridine. 1H NMR (400 MHz, DMSO-d6) δ 10.50 (br. s, 1H), 8.56 (s, 1H), 8.52 (d, J=1.8 Hz, 1H), 8.29 (s, 1H), 8.20 (d, J=1.8 Hz, 1H), 7.85 (d, J=9.6 Hz, 1H), 7.17 (d, J=7.6 Hz, 2H), 7.06 (d, J=7.6 Hz, 2H), 5.27 (s, 2H), 4.17 (d, J=7.4 Hz, 2H), 1.37 (m, 1H), 0.54 (m, 2H), 0.48 (m, 2H); LCMS: Rt=0.67 min, m/z=484.1 [M+H].
To a solution of 6-bromo-3H-imidazo[4,5-b]pyridine (4.6 g, 23.2 mmol) and K2CO3 (4.8 g, 34.9 mmol) in DMF (50 mL) was added (bromomethyl)cyclopropane (4.7 g, 34.9 mmol) and the reaction was stirred at 25° C. for 12 hrs. The mixture was washed with H2O (200 mL) and extracted with EA (100 mL×2). The combined organic layers were dried over anhydrous Na2SO4, filtered and concentrated. The residue was purified by prep-HPLC (formic acid) to give 6-bromo-3-(cyclopropylmethyl)-3H-imidazo[4,5-b]pyridine. LCMS: Rt=0.65 min, m/z=251.9, 253.9 [M+H]. 1H NMR (400 MHz, DMSO) δ 8.59 (s, 1H), 8.45 (d, J=2.0 Hz, 1H), 8.37 (d, J=2.0 Hz, 1H), 8.13 (d, J=7.2 Hz, 1H), 1.36 (m, 1H), 0.52 (m, 2H), 0.48 (m, 2H).
To a solution of 6-bromo-3-(cyclopropylmethyl)-3H-imidazo[4,5-b]pyridine (2.2 g, 10.7 mmol) in MeOH (30 mL) was added Et3N (2.65 g, 26.2 mmol), Pd(dppf)Cl2 (319 mg, 0.44 mmol). The mixture was stirred under CO (2.5 MPa) at 110° C. for 48 h. The mixture was concentrated and the residue was purified by column (PE/EA=100/1) to give methyl 3-(cyclopropylmethyl)-3H-imidazo[4,5-b]pyridine-6-carboxylate. 1H NMR (400 MHz, CDCl3) δ 9.05 (s, 1H), 8.67 (d, J=1.8 Hz, 1H), 8.25 (s, 1H), 4.17 (d, J=7.2 Hz, 2H), 3.96 (s, 3H), 1.38 (m, 1H), 0.70 (m, 2H), 0.48 (m, 2H).
5-(4-((6-chloropyridin-3-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (176) was obtained using the procedures of step 1 and step 3 in Example 167, except (6-fluoropyridin-3-yl)methanol was replaced with (6-chloropyridin-3-yl)methanol, and N-cyclopentyl-5-((4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenoxy)methyl)pyridin-2-amine was replaced with 2-chloro-5-((4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenoxy)methyl)pyridine. 1H NMR (500 MHz, Methanol-d4) δ 8.50 (d, J=2.3 Hz, 1H), 8.33 (s, 1H), 7.96 (dd, J=8.2, 2.3 Hz, 1H), 7.52 (d, J=8.2 Hz, 1H), 7.30 (d, J=8.6 Hz, 2H), 7.12 (d, J=8.6 Hz, 2H), 5.21 (s, 2H). LCMS Rt=0.91 min, m/z=424.1 [M+H].
2-oxo-5-(4-((pyridin-3-yloxy)methyl)phenyl)-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (177) was made using step 2 in the procedure used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl-1,2-dihydropyridine-3-carboxamide (54), except 4,4,5,5-tetramethyl-2-(4-((3-nitrobenzyl)oxy)phenyl)-1,3,2-dioxaborolane was replaced with 3-((4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzyl)oxy)pyridine. 1H NMR (400 MHz, DMSO-d6)=10.45 (br, s, 1H), 8.42 (s, 1H), 8.19 (m, 1H), 8.18 (m, 1H), 7.48 (m, 3H), 7.29 (m, 1H), 7.27 (m, 2H), 7.18 (m, 2H), 5.21 (s, 2H). LCMS: Rt=0.83 min, m/z=4390.1 [M+H].
3-((4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzyl)oxy)pyridine was obtained using the method described in step 2 of Example 52, except 4-(4-bromobenzylidene)tetrahydro-2H-pyran was replaced with 3-((4-bromobenzyl)oxy)pyridine.
To a solution of 1-bromo-4-(bromomethyl)benzene (2.0 g, 8.00 mmol) and pyridin-3-ol (799 mg, 8.40 mmol) in DMF (5 mL) was added NaH (336 mg, 8.40 mmol) at 25° C. Then the mixture was stirred at 25° C. for 12 hrs. The reaction mixture was poured into water (20 ml) and then extracted with EA (20 mL×3). The combine organic layers were washed with saturated brine (30 mL×3), then dried over anhydrous Na2SO4, filtered and concentrated to give 3-((4-bromobenzyl)oxy)pyridine. LCMS: Rt=1.84 min, m/z=365.1 [M+H].
5-(4-((5-(furan-3-yl)pyridin-3-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (178) was made using a procedure similar to that used to make 5-(4-((1-acetylpiperidin-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (55), except 1-(4-(hydroxymethyl)piperidin-1-yl)ethan-1-one was replaced with (5-(furan-3-yl)pyridin-3-yl)methanol. 1H NMR (400 MHz, DMSO-d6) δ 8.87 (s, 1H), 8.58 (s, 1H), 8.36 (s, 1H), 8.14 (s, 1H), 7.96 (s, 1H), 7.81 (s, 1H), 7.21 (d, J=8.0 Hz, 2H), 7.11-7.05 (m, 3H), 5.19 (s, 2H); LCMS: Rt—0.91 min, m/z=456.1 [M+H].
To a solution of (5-bromopyridin-3-yl)methanol (1.0 g, 5.32 mmol), 2-(furan-3-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (1.24 g, 6.38 mmol) and Na2CO3 (1.13 g, 10.6 mmol) in a mixture of dioxane/H2O (5:1, 10 mL) was added Pd(dppf)Cl2 (390 mg, 0.53 mmol) at 25° C. under N2 and the mixture was stirred at 100° C. for 3 hr. The reaction mixture was poured into water (20 mL) and then extracted with EA (20 mL×2). The combined organic layers were dried over anhydrous Na2SO4, filtered and concentrated to give crude product which was purified by column chromatography (PE/EA=3/1 to PE/EA=1/1) to give (5-(furan-3-yl)pyridin-3-yl)methanol. LCMS: Rt=0.24 min, m/z=176.1 [M+H]; TLC: (PE/EA=1/1) Rt=0.2.
5-(4-((5-morpholinopyridin-3-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl-1,2-dihydropyridine-3-carboxamide (179) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 4-(5-(bromomethyl)pyridin-3-yl)morpholine. 1H NMR (400 MHz, DMSO-d6) δ 9.34 (s, 1H), 8.29 (d, J=2.6 Hz, 1H), 8.16 (s, 1H), 8.14 (s, 1H), 8.10 (s, 1H), 7.75 (s, 1H), 7.43 (s, 1H), 7.24 (d, J=8.4 Hz, 2H), 7.09 (d, J=8.4 Hz, 2H), 5.12 (s, 2H), 3.77 (m, 5H), 3.21 (m, 4H); LCMS: Rt=0.58 min, m/z=475.1 [M+H].
2-oxo-5-(4-((5-(tetrahydrofuran-3-yl)pyridin-3-yl)methoxy)phenyl)-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (180) was made using a procedure similar to that used to make 5-(4-((1-acetylpiperidin-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (55), except 1-(4-(hydroxymethyl)piperidin-1-ylethan-1-one was replaced with (5-(tetrahydrofuran-3-yl)pyridin-3-yl)methanol. 1H NMR (400 MHz, DMSO-d6) δ 8.56 (d, J=2.0 Hz, 1H), 8.50 (d, J=2.0 Hz, 1H), 7.97 (s, 1H), 7.82 (t, J=2.0 Hz, 1H), 7.20 (d, J=8.4 Hz, 2H), 7.10 (s, 1H), 7.06 (d, J=8.4 Hz, 2H), 5.17 (s, 2H), 4.09-4.03 (m, 1H), 4.01-3.93 (m, 1H), 3.82 (q, J=7.6 Hz, 1H), 3.63-3.57 (m, 1H), 3.51-3.42 (m, 1H), 2.41-2.34 (m, 1H), 2.00-1.90 (m, 1H); LCMS: Rt=0.82 min, m/z=460.1 [M+H].
Pd/C (30 mg) was added to a solution of (5-(furan-3-yl)pyridin-3-yl)methanol (300 mg, 1.72 mmol) in MeOH (5 mL) at 25° C. and the mixture stirred at 25° C. for 12 hrs under H2 (15 psi). The reaction mixture was filtered and concentrated to give (5-(tetrahydrofuran-3-yl)pyridin-3-yl)methanol which was used without further purification. LCMS: Rt=0.12 min, m/z=180.1 [M+H].
5-(4-((5-(3-hydroxyoxetan-3-yl)pyridin-3-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (181) was made using step 2 in the procedure used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (54), except 4,4,5,5-tetramethyl-2-(4-((3-nitrobenzyl)oxy)phenyl)-1,3,2-dioxaborolane was replaced with 3-(5-((4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenoxy)methyl)pyridin-3-yl)oxetan-3-ol. 1H NMR (400 MHz, DMSO-d6) δ 8.80 (d, J=4.8 Hz, 1H), 8.63 (d, J=11.2 Hz, 1H), 8.07 (d, J=11.6 Hz, 1H), 7.97 (s, 1H), 7.75 (d, J=8.6 Hz, 1H), 7.16 (d, J=8.6 Hz, 1H), 7.02 (d, J=16.2 Hz, 2H), 6.65 (s, 1H), 5.21 (s, 2H), 4.82-4.79 (m, 2H), 4.75-4.72 (m, 2H); LCMS: Rt=0.57 min, m/z=462.0 [M+H].
3-(5-((4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenoxy)methyl)pyridin-3-yl)oxetan-3-ol was obtained using the method described in step 2 of Example 52, except 4-(4-bromobenzylidene)tetrahydro-2H-pyran was replaced with 3-(5-((4-bromophenoxy)methyl)pyridin-3-yl)oxetan-3-ol.
Step 1: TBDPSCl (17.5 g, 60 mmol) was added drop-wise to a solution of (5-bromopyridin-3-yl)methanol (10 g, 50 mmol) and imidazole (7.0 g, 100 mmol) in DCM (100 mL) and the mixture stirred at 25° C. for 16 hr. The reaction mixture was poured into water (200 mL) and the resulting mixture was extracted with EA (200 mL×2). The combined organic layers were dried over anhydrous Na2SO4, filtered and concentrated to give crude product which was purified by column chromatography (20-50% PE:EA) to give 3-bromo-5-(((tert-butyidiphenylsilyl)oxy)methyl)pyridine. TLC:PE:EA=1:1 Rf=0.8.
Step 2: nBuLi (20 mL, 50 mmol) was added drop-wise to a solution of 3-bromo-5-(((tert-butyldiphenylsilyl)oxy)methyl)pyridine (10 g, 25 mmol) in THF (100 mL) at −78° C. and the mixture stirred at −25° C. for 1 hr. Oxetan-3-one (3.5 mg, 50 mmol) was then added at 0° C. and the mixture stirred at 25° C. for 15 hr. The reaction mixture was poured into water (200 mL) and the resulting mixture extracted with EA (200 mL×2). The combined organic layers were dried over anhydrous Na2SO4, filtered and concentrated to give crude product which was purified by column chromatography (20-50% PE:EA) to give 3-(5-(((tert-butyldiphenylsilyl)oxy)methyl)pyridin-3-yl)oxetan-3-ol. TLC: (15% PE:EA) Rf=0.2; LCMS: Rt=0.84 min, m/z=412.0 [M+H].
Step 3: TBAF (1.3 g, 5.2 mmol) was added to a solution of 3-(5-(((tert-butyldiphenylsilyl)oxy)methyl)pyridin-3-yl)oxetan-3-ol (2.2 g, 5.2 mmol) in THF (20 mL) at 25° C. and the mixture stirred at 25° C. for 16 hr. The reaction mixture was concentrated to give crude product which was purified by prep-TLC (PE:EA=1:1) Rf=0.1 to give 3-(5-(hydroxymethyl)pyridin-3-yl)oxetan-3-ol. 1H NMR (400 MHz, CDCl3) δ 8.64 (d, J=2.0 Hz, 1H), 8.38 (d, J=1.8 Hz, 1H), 7.93 (s, 1H), 4.88 (d, J=7.2 Hz, 2H), 4.75 (d, J=7.2 Hz, 2H), 4.66 (s, 2H).
Step 4: DTBAD (800 mg, 4 mmol) was added to a solution of 3-(5-(hydroxymethyl)pyridin-3-yl)oxetan-3-ol (360 mg, 2.0 mmol), 4-bromophenol (440 mg, 2 mmol) and PBu3 (800 mg, 4 mmol) in THF (4 mL) at 0° C. and the mixture stirred at 25° C. for 16 hr. The reaction mixture was poured into water (20 mL) and extracted with EA (20 mL×2). The combined organic layers were dried over anhydrous Na2SO4, filtered and concentrated to give crude product which was purified by prep-TLC (1:1 PE/EA) to give 3-(5-((4-bromophenoxy)methyl)pyridin-3-yl)oxetan-3-ol. TLC: (1:1 PE:EA) Rf=0.5; LCMS: Rt=0.64 min, m/z=336.0 [M+H]; 1H NMR (400 MHz, CDCl3) δ (d, J=2.0 Hz, 1H), 8.62 (d, J=2.0 Hz, 1H), 8.11 (s, 1H), 7.41 (d, J=9.0 Hz, 2H), 6.87 (d, J=9.0 Hz, 2H), 5.08 (s, 2H), 5.03 (d, J=7.2 Hz, 2H), 4.83 (d, J=7.2 Hz, 2H).
5-(4-((5-(3-fluorooxetan-3-yl)pyridin-3-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (182) was made using step 2 in the procedure used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (54), except 4,4,5,5-tetramethyl-2-(4-((3-nitrobenzyl)oxy)phenyl)-1,3,2-dioxaborolane was replaced with 3-(3-fluorooxetan-3-yl)-5-((4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenoxy)methyl)pyridine. 1H NMR (400 MHz, DMSO-d6) δ 8.79 (s, 1H), 8.77 (s, 1H), 8.11 (s, 1H), 8.11 (s, 1H), 7.96 (s, 1H), 7.29 (d, J=8.4 Hz, 2H), 7.14 (d, J=8.8 Hz, 2H), 5.27 (s, 2H), 5.04 (s, 1H), 4.98 (s, 2H); LCMS: Rt=0.64 min, m/z=464.1 [M+H].
3-(3-fluorooxetan-3-yl)-5-((4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenoxy)methyl)pyridine was obtained using the method described in step 2 of Example 52, except 4-(4-bromobenzylidene)tetrahydro-2H-pyran was replaced with 3-((4-bromophenoxy)methyl)-5-(3-fluorooxetan-3-yl)pyridine.
DAST (287 mg, 1.78 mmol) was added to a solution of 3-(5-((4-bromophenoxy)methyl)pyridin-3-yl)oxetan-3-ol (200 mg, 0.59 mmol) in DCM (5 mL) at 0° C. Then the mixture was stirred at 25° C. for 3 hrs. The reaction mixture was poured into water (10 mL) and saturated NaHCO3 solution was added to adjust pH=7. The resulting mixture was extracted with DCM (10 mL×2). The combined organic layers were dried over anhydrous Na2SO4, filtered and concentrated to give crude product which was purified by column chromatography (PE/EA=5:1) to give 3-((4-bromophenoxy)methyl)-5-(3-fluorooxetan-3-yl)pyridine. TLC: (PE/EA=3:1) Rf=0.3; LCMS: Rt=0.77 min, m/z=338.0, 340.1 [M+1]+=338/340; 1H NMR (400 MHz, DMSO-d6) δ 8.77-8.72 (m, 2H), 8.06 (s, 1H), 7.49 (d, J=9.2 H z, 2H), 7.05 (d, J=8.8 Hz, 2H), 5.21 (s, 2H), 5.02 (s, 2H), 4.97 (s, 2H).
2-oxo-5-(4-((3-(pyridin-3-yl)oxetan-3-yl)oxy)phenyl)-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (183) was made using a procedure similar to that used to make 5-(4-((1-acetylpiperidin-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (55), except 1-(4-(hydroxymethyl)piperidin-1-yl)ethan-1-one was replaced with 3-(pyridin-3-yl)oxetan-3-ol. 1H NMR (500 MHz, DMSO-d6) δ 13.69 (br. s, 1H), 8.82 (d, J=2.2 Hz, 1H), 8.59 (dd, J=4.9, 1.5 Hz, 1H), 8.45 (br. s, 1H), 8.23 (s, 1H), 8.18 (br. s, 1H), 8.04 (dt, J=7.9, 2.2 Hz, 1H), 7.52 (dd, J=8.0, 4.9 Hz, 1H), 7.20 (d, J=8.5 Hz, 2H), 6.70-6.63 (m, 2H), 5.07 (d, J=7.5 Hz, 1H), 5.03 (d, J=7.5 Hz, 1H). LCMS: Rt=0.54 min. m/z=432.3 [M+H].
3-bromopyridine (0.06 mL, 0.6 mmol) in toluene (1.0 mL) was added to an oven dried 8 mL vial with a stirbar which was sealed with a septa top cap and purged with vac/N2 (×3). The reaction was cooled to −78° C. and nBuLi (1.6 M in hexanes, 0.39 mL, 0.63 mmol) was added dropwise and the resulting solution was stirred at −78° C. for 30 min. A solution of oxetan-3-one (0.032 mL, 0.5 mmol) in THF (1.0 ml) was then added dropwise and the reaction mixture was allowed to warm to rt slowly overnight. The reaction was quenched with NH4Cl(aq), and extracted with EA (×3). The combined organic layers were washed with brine, dried over Na2SO4, filtered and concentrated in vacuo to give 3-(pyridin-3-yl)oxetan-3-ol which was used without further purification. LCMS Rt=0.14 min, m/z=152.1 [M+H].
5-(4-(cyclopropyl(pyridin-3-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (184) was obtained using the procedures of step 1 and step 3 in Example 167, except (6-fluoropyridin-3-yl)methanol was replaced with cyclopropyl(pyridin-3-yl)methanol, and N-cyclopentyl-5-((4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenoxy)methyl)pyridin-2-amine was replaced with 3-(cyclopropyl(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenoxy)methyl)pyridine. LCMS Rt=0.64 min, m/z=430.3 [M+H].
Nicotinaldehyde (94 μl, 1.0 mmol) and THF (4.0 mL) were added to an oven dried 20 mL vial with a stirbar which was sealed with a septa top cap and purged with vac/N2 (×3). The reaction mixture was cooled to −10° C. and cyclopropylmagnesium bromide (1.0 M in THF, 1.30 mL, 1.30 mmol) was added dropwise. The reaction mixture was then allowed to slowly warm to rt in a cooling bath and then stirred at rt for 1.5 h. The reaction was quenched with NH4Cl(aq), extracted with EA and the combined organic layers were washed with brine, dried over Na2SO4, filtered and concentrated. The crude product was then purified by silica gel chromatography (ISCO, 50-100% EA/heptane) to give cyclopropyl(pyridin-3-yl)methanol. LCMS Rt=0.23 min, m/z=150.1 [M+H].
2-oxo-5-(4-((1-(pyridin-3-yl)pent-4-en-1-yl)oxy)phenyl)-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (185) was obtained using the procedures of step 1 and step 3 in Example 167, except (6-fluoropyridin-3-yl)methanol was replaced with 1-(pyridin-3-yl)pent-4-en-1-ol, and N-cyclopentyl-5-((4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenoxy)methyl)pyridin-2-amine was replaced with 3-(1-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenoxy)pent-4-en-1-yl)pyridine. 1H NMR (500 MHz, DMSO-d6) δ 13.65 (br. s, 1H), 8.66 (d, J=2.2 Hz, 1H), 8.49 (dd, J=4.8, 1.7 Hz, 1H), 8.17 (s, 1H), 8.24-7.91 (br. S, 2H), 7.84 (dt, J=7.8, 2.2 Hz, 1H), 7.39 (ddd, J=7.8, 4.8, 0.8 Hz, 1H), 7.17 (d, J=8.3 Hz, 2H), 7.07-6.92 (m, 2H), 5.88 (ddt, J=16.9, 10.3, 6.4 Hz, 1H), 5.48 (dd, J=7.6, 5.2 Hz, 1H), 5.03 (dd, J=16.9, 1.8 Hz, 1H), 5.01-4.96 (m, 1H), 2.28-2.02 (m, 3H), 1.96-1.84 (m, 1H). LCMS Rt=0.83 min, m/z=444.0 [M+H].
5-(4-(2-methoxy-1-(pyridin-3-yl)ethoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (186) was made using step 2 in the procedure used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (54), except 4,4,5,5-tetramethyl-2-(4-((3-nitrobenzyl)oxy)phenyl)-1,3,2-dioxaborolane was replaced with 3-(2-methoxy-1-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenoxy)ethyl)pyridine. LCMS Rt=0.59 min, m/z=434.3 [M+H].
3-(2-methoxy-1-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenoxy)ethyl)pyridine was obtained using the method described in step 2 of Example 52, except 4-(4-bromobenzylidene)tetrahydro-2H-pyran was replaced with 3-(1-(4-bromophenoxy)-2-methoxyethyl)pyridine.
Step 1: To a 100 mL schlenk flask, dried under vacuum with a heat gun and purged with vac/N2 (×3) was added 3-bromopyridine (1.16 mL, 12.0 mmol) and toluene (20 mL). The reaction was cooled to −78° C. and nBuLi (2.5 M in hexanes, 5.00 mL, 12.5 mmol) was added dropwise and the reaction mixture was stirred at −78° C. for 30 min. A solution of 2-((tert-butyldimethylsilyl)oxy)acetaldehyde (1.90 mL, 10.0 mmol) in THF (10.0 mL) was then added dropwise and the reaction mixture then allowed to warm to rt slowly overnight. The reaction was quenched with NH4Cl(aq), extracted into EA×3, and the combined organic layers were washed with brine, dried over Na2SO4, filtered and concentrated in vacuo. The crude product was purified by silica gel chromatography (ISCO, 0-70% EA/heptane) to give 2-((tert-butyldimethylsilyl)oxy)-1-(pyridin-3-yl)ethan-1-ol. LCMS Rt=0.71 min, m/z=254.3 [M+H].
Step 2: 3-(1-(4-bromophenoxy)-2-((tert-butyldimethylsilyl)oxy)ethyl)pyridine was prepared using the method described in step 1 in Example 167, using 2-((tert-butyldimethylsilyl)oxy)-1-(pyridin-3-yl)ethan-1-ol and 4-bromophenol. LCMS t=1.12, m/z=408.2, 410.2 [M+H].
Step 3: To a 4 mL vial with a stirbar was added 3-(1-(4-bromophenoxy)-2-((tert-butyldimethylsilyl)oxy)ethyl)pyridine (30 mg, 0.07 mmol) and the vial was sealed with a septa top cap, purged with vac/N2 (×3). THF (0.37 mL) was added, followed by TBAF (1.0 M in THF, 110 μl, 0.11 mmol) and the reaction mixture was stirred at rt for 1 h. The reaction mixture was diluted with EA, washed sequentially with water and brine, dried over Na2SO4, filtered through a plug of SiO2 and concentrated in vacuo to give 2-(4-bromophenoxy)-2-(pyridin-3-yl)ethan-1-ol. LCMS t=0.70, m/z=294.1, 296.1 [M+H].
Step 4: To an oven dried 4 mL vial with a stirbar was added NaH (60% in mineral oil, 3.8 mg, 0.10 mmol) and the vial was sealed with a septa-top cap and purged with vac/N2 (×3). A solution of 2-(4-bromophenoxy)-2-(pyridin-3-yl)ethan-1-ol (21.0 mg, 0.07 mmol) in THF (0.37 mL) was added slowly. The reaction mixture was stirred at rt for 30 mins and iodomethane (6.4 μl, 0.10 mmol) was added. The reaction was then stirred at rt overnight. The reaction mixture was diluted with EA, washed with brine and the organic layer dried over Na2SO4, filtered and concentrated to give 3-(1-(4-bromophenoxy)-2-methoxyethyl)pyridine. LCMS t=0.80, m/z=306.1, 308.1 [M+H].
5-(4-(2-hydroxy-1-(pyrazin-2-yl)ethoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (187) was made using the method described for the synthesis of 5-(4-(2-methoxy-1-(pyridin-3-yl)ethoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (186), except 3-(1-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenoxy)pent-4-en-1-yl)pyridine was replaced with 2-(pyrazin-2-yl)-2-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenoxy)ethan-1-ol. 1H NMR (500 MHz, DMSO-d6) δ 13.66 (br. s, 1H), 8.80-7.80 (br. m, 2H). 8.74 (d, J=1.4 Hz, 1H), 8.67 (t, J=2.0 Hz, 1H), 8.59 (d, J=2.6 Hz, 1H), 8.18 (s, 1H), 7.20 (d, J=8.2 Hz, 2H), 7.02 (d, J=8.3 Hz, 2H), 5.49 (t, J=5.1 Hz, 1H), 5.22 (t, J=5.8 Hz, 1H), 3.91 (t, J=5.5 Hz, 2H). LCMS: Rt=0.64 min, m/z=421.1 [M+H].
5-(4-((4-acetylmorpholin-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (188) was made using step 2 in the procedure used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (54), except 4,4,5,5-tetramethyl-2-(4-((3-nitrobenzyl)oxy)phenyl)-1,3,2-dioxaborolane was replaced with 1-(2-((4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenoxy)methyl)morpholino)ethan-1-one. LCMS: Rt=0.82 min, m/z=440.2 [M+H].
1-(2-((4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenoxy)methyl)morpholino)ethan-1-one was obtained using the method described in step 2 of Example 52, except 4-(4-bromobenzylidene)tetrahydro-2H-pyran was replaced with 1-(2-((4-bromophenoxy)methyl)morpholino)ethan-1-one.
Step 1: Tert-butyl 2-((4-bromophenoxy)methyl)morpholine-4-carboxylate was prepared using the method described in step 1 in Example 167, using tert-butyl 2-(hydroxymethyl)morpholine-4-carboxylate and 4-bromophenol. LCMS t=1.19 min, m/z=316.1, 318.1 [M+H−tBu]
Step 2: To a 4 ml vial with a stirbar was added tert-butyl 2-((4-bromophenoxy)methyl)morpholine-4-carboxylate (42 mg, 0.113 mmol), followed by DCM (0.35 mL) and TFA (0.35 mL). The reaction mixture was stirred at rt for 20 mins and the volatiles were removed under a stream of air and then in vacuo. Under N2, pyridine (0.55 mL) was added, followed by dropwise addition of acetic anhydride (0.21 mL, 2.26 mmol) and the reaction mixture stirred at rt for 45 mins. The reaction mixture was diluted with EA, washed with 1M HCl, then brine, dried over Na2SO4, filtered and concentrated in vacuo to give 1-(2-((4-bromophenoxy)methyl)morpholino)ethan-1-one. LCMS t=0.79, m/z=314.1, 316.1 [M+H].
5-(4-(morpholin-2-ylmethoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (189) was made using a procedure similar to that used to make 5-(4-((1-acetylpiperidin-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (55), except 1-(4-(hydroxymethyl)piperidin-1-yl)ethan-1-one was replaced with morpholin-2-ylmethanol. 1H NMR (500 MHz, DMSO-d6) δ 9.02 (br. s, 2H), 8.46 (br. s, 1H), 8.25 (s, 1H), 8.15 (br. s, 1H), 7.30-7.23 (m, 2H), 7.10-7.02 (m, 2H), 4.16-3.98 (m, 4 zH), 3.76 (td, J=12.4, 2.4 Hz, 1H), 3.41-4.37 (m, 1H), 3.24 (d, J=13.3 Hz, 1H), 3.10-2.94 (m, 2). LCMS: Rt=0.72 min, m/z=398.2 [M+H].
Tert-butyl 2-((4-(5-carbamoyl-6-oxo-2-(trifluoromethyl)-1,6-dihydropyridin-3-yl)phenoxy)methyl)morpholine-4-carboxylate (190) was made using a procedure similar to that used to make 5-(4-((1-acetylpiperidin-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (55), except 1-(4-(hydroxymethyl)piperidin-1-yl)ethan-1-one was replaced with tert-butyl 2-(hydroxymethyl)morpholine-4-carboxylate. LCMS: Rt=0.91 min, m/z=442.3 [M+H].
5-(4-((4-(isopropylsulfonyl)morpholin-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (191) was made using a procedure similar to that used to make 5-(4-((1-acetylpiperidin-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (55), except 1-(4-(hydroxymethyl)piperidin-1-yl)ethan-1-one was replaced with (4-(isopropylsulfonyl)morpholin-2-yl)methanol. 1H NMR (500 MHz, DMSO-d6) δ 13.66 (br. s, 1H), 8.46 (br. s, 1H), 8.27 (s, 1H), 8.17 (br. s, 1H), 7.27 (d, J=8.4 Hz, 2H), 7.04 (d, J=8.4 Hz, 2H), 4.08 (d, J=5.1 Hz, 2H), 3.94 (d, J=11.4 Hz, 1H), 3.84-3.75 (m, 1H), 3.68 (d, J=12.5 Hz, 1H), 3.54 (td, J=11.4, 2.4, 1H), 3.48 (d, J=12.5 Hz, 1H), 3.44-3.37 (m, 1H), 3.04 (td, J=12.0, 3.2 Hz, 1H), 2.97-2.91 (m, 1H), 1.25 (d, J=6.8 Hz, 6H). LCMS: Rt=0.79 min, m/z=504.3 [M+H].
5-(4-((4-(2,2-difluoroethyl)morpholin-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (192) was made using a procedure similar to that used to make 5-(4-((1-acetylpiperidin-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (55), except 1-(4-(hydroxymethyl)piperidin-1-yl)ethan-1-one was replaced with (4-(2,2-difluoroethyl)morpholin-2-yl)methanol. LCMS: Rt=0.57 min, m/z=462.3 [M+H].
5-(4-((4-(2-methoxyethyl)morpholin-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (193) was made using a procedure similar to that used to make 5-(4-((1-acetylpiperidin-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (55), except 1-(4-(hydroxymethyl)piperidin-1-yl)ethan-1-one was replaced with (4-(2-methoxyethyl)morpholin-2-yl)methanol. 1H NMR (500 MHz, DMSO-d6) δ 13.66 (br. s, 1H), 10.36 (br. s, 1H), 8.46 (s, 1H), 8.27 (s, 1H), 8.16 (s, 1H), 7.29 (d, J=8.3 Hz, 2H), 7.05 (d, J=8.3 Hz, 2H), 4.20-4.03 (m, 4H), 3.84 (t, J=12.5 Hz, 1H), 3.70 (t, J=4.9 Hz, 2), 3.64 (d, J=12.5 Hz, 1H), 3.48 (d, J=12.5 Hz, 1H), 3.39 (s, 2H), 3.33 (s, 3H), 3.11 (q, J=12.3, 2H). LCMS: Rt=0.72 min, m/z=456.2 [M+H].
5-(4-((4-(cyclopropylmethyl)morpholin-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (194) was made using a procedure similar to steps 2 and 3 in the procedure used to make 2-oxo-5-(4-((tetrahydro-2H-pyran-4-yl)methyl)phenyl)-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (52), except 4-(4-bromobenzylidene)tetrahydro-2H-pyran was replaced with 2-((4-bromophenoxy)methyl)-4-(cyclopropylmethyl)morpholine. 1H NMR (500 MHz, DMSO-d6) δ 13.58 (br. S, 1H), 10.28 (br. S, 1H), 8.45 (s, 1H), 8.26 (s, 1H), 8.16 (s, 1H), 7.29 (d, J=8.3 Hz, 2H), 7.05 (d, J=8.3 Hz, 2H), 4.22-4.02 (m, 4H), 3.83 (t, J=12.4 Hz, 1H), 3.70 (d, J=12.4 Hz, 1H), 3.54 (d, J=12.4 Hz, 2H), 3.17-2.98 (m, 5H), 1.15-1.04 (m, 1H), 0.72-0.60 (m, 2H), 0.45-0.31 (m, 2H). LCMS: Rt=0.59 min, m/z=452.3 [M+H].
Step 1: To a 20 mL oven dried vial with stirbar was added tert-butyl 2-(hydroxymethyl)morpholine-4-carboxylate (0.50 g, 2.301 mmol), 4-Bromophenol (0.418 g, 2.416 mmol) and triphenylphosphine (0.724 g, 2.76 mmol) and the reaction vial was then sealed with a septa topped cap and purged with vac/N2 (×3). THF (11.51 mL) was added and the reaction mixture was cooled to ° 0 C in an ice bath. DEAD (0.419 ml, 2.65 mmol) was then added dropwise and the reaction stirred at 0° C. for 5 mins before warming to rt and stirring for 1.5 h. The reaction mixture was then concentrated in vacuo and purified by silica gel chromatography (ISCO, load as a slurry in minimum DCM) 0-50% EtOAc:Hept. (product elutes at ˜30% EtOAc) to give tert-butyl 2-((4-bromophenoxy)methyl)morpholine-4-carboxylate.
Step 2: To a 4 m L vial with stirbar was added tert-butyl 2-((4-bromophenoxy)methyl)morpholine-4-carboxylate (50 mg, 0.134 mmol) followed by DCM (0.41 mL) and trifluoroacetic acid (414 μl, 5.37 mmol) and the reaction mixture stirred for 30 mins. The mixture was then concentrated and Tetrabutylammonium iodide (4.96 mg, 0.013 mmol) and potassium carbonate (74.3 mg, 0.537 mmol) were added, the reaction vial was sealed with a septa-top cap and purged with vac/N2 (×3). Acetonitrile (448 μL) was added, followed by (bromomethyl)cyclopropane (15.43 μL, 0.161 mmol) and the reaction mixture warmed to 65° C. and stirred vigorously overnight. The reaction mixture was diluted with brine and extracted with EtOAc (×3). The organic layers were combined and dried over Na2SO4, filtered and concentrated to give 2-((4-bromophenoxy)methyl)-4-(cyclopropylmethyl)morpholine which was used without further purification.
5-(4-((1,4-oxazepan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (195) was made using a procedure similar to that used to make 5-(4-((1-acetylpiperidin-4-ylmethoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (55), except 1-(4-(hydroxymethyl)piperidin-1-yl)ethan-1-one was replaced with (1,4-oxazepan-2-yl)methanol. 1H NMR (500 MHz, DMSO-d6) δ 13.61 (br. s, 1H), 8.90 (br. s, 2H), 8.44 (s, 1H), 8.26 (s, 1H), 8.16 (s, 1H), 7.36-7.08 (m, 2H), 7.10-6.93 (m, 2H), 4.19 (dtd, J=10.0, 5.1, 3.1 Hz, 1H), 4.13-4.03 (m, 2H), 3.97 (dt, J=11.7, 5.7 Hz, 1H), 3.70 (ddd, J=12.1, 6.7, 5.1 Hz, 1H), 3.57-3.30 (m, 2H), 3.28-3.11 (m, 2H), 2.01 (br. s, 2H). LCMS: Rt=0.96 min, m/z=412.2 [M+H].
Acetic acid (0.3 μL) and oxetan-3-one (7.3 μL, 0.11 mmol) were added to a solution of 5-(4-((1,4-oxazepan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (195) (15 mg, 0.029 mmol) and NaBH(OAc)3 (30.3 mg, 0.14 mmol) in DCM (0.57 mL) and the reaction mixture was stirred at rt for 3 h. The reaction mixture was concentrated and purified by reverse phase HPLC to give 5-(4-((4-(oxetan-3-yl)-1,4-oxazepan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (196). LCMS: Rt=0.59 min, m/z=488.2 [M+H].
Isopropylsulfonyl chloride (3.2 μL, 0.29 mmol) was added to a solution of 5-(4-((1,4-oxazepan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (195) (15 mg, 0.029 mmol) and Hunig's base (50 μL, 0.29 mmol) in DCM (0.29 mL) and the reaction mixture was stirred at rt for 18 h. The reaction was quenched with pH=4 phosphate buffer, concentrated and purified by reverse phase HPLC to give 5-(4-((4-(isopropylsulfonyl)-1,4-oxazepan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (197). LCMS: Rt=0.83 min, m/z=518.2 [M+H].
5-(4-((4-(isobutylsulfonyl)-1,4-oxazepan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (198) was obtained using the method described the synthesis of 5-(4-((4-(isopropylsulfonyl)-1,4-oxazepan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (197), except isopropylsulfonyl chloride was replaced with 2-methylpropane-1-sulfonyl chloride. 1H NMR (500 MHz, DMSO-d6) δ 13.64 (br. s, 1H), 8.46 (br. s, 1H), 8.28 (s, 1H), 8.18 (br. s, 1H), 7.34-7.21 (m, 2H), 7.09-6.97 (m, 2H), 4.08-3.98 (m, 3H), 3.93 (ddd, J=8.8, 5.4, 3.3 Hz, 1H), 3.74 (dd, J=14.1, 3.2 Hz, 1H), 3.65 (ddd, J=12.7, 8.4, 4.6 Hz, 1H), 3.52 (dt, J=12.7, 6.0 Hz, 1H), 3.31-3.22 (m, 2H), 3.05-2.92 (m, 2H), 2.10 (dp, J=13.3, 6.5 Hz, 1H), 1.86 (dq, J=6.8, 5.0 Hz, 2H), 1.03 (dd, J=6.7, 1.4 Hz, 6H). LCMS: Rt=0.89 min, m/z=532.2 [M+H].
In a 5 mL vial was added 2-(4-(5-carbamoyl-6-oxo-2-(trifluoromethyl)-1,6-dihydropyridin-3-yl)phenoxy)acetic acid (10. mg, 0.028 mmol) in DMF (56 μl). Morpholine (2.70 μl, 0.031 mmol) was added, followed by DIPEA (25 μl, 0.14 mmol) and dropwise addition of HATU as a 0.1M solution in DMF. The reaction was stirred at rt for 1 h. Purification by reverse phase HPLC gave 5-(4-(2-morpholino-2-oxoethoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (199). 1H NMR (500 MHz, DMSO-d6) δ 13.65 (br. s, 1H), 8.46 (br. s, 1H), 8.28 (s, 1H), 8.18 (br. s, 1H), 7.29-7.22 (m, 2H), 7.01 (d, J=8.7 Hz, 2H), 4.90 (s, 2H), 3.71-3.35 (m, 8H). LCMS: Rt=0.57 min, m/z=426.3 [M+H].
2-(4-(5-carbamoyl-6-oxo-2-(trifluoromethyl)-1,6-dihydropyridin-3-yl)phenoxy)acetic acid was obtained using step 1 in the procedure used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 2-bromoacetic acid. LCMS: Rt=0.59 min, m/z—357.2 [M+H].
5-(4-(2-(butylamino)-2-oxoethoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (200) was obtained using the method described for the synthesis of 5-(4-(2-morpholino-2-oxoethoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (199) except morpholine was replaced with butan-1-amine. 1H NMR (500 MHz, DMSO-d6) δ 13.64 (br. s, 1H), 8.46 (br. s, 1H), 8.27 (s, 1H), 8.17 (br. s, 1H), 8.09 (t, J=5.9 Hz, 1H), 7.29 (d, J=8.6 Hz, 2H), 7.03 (d, J=8.6 Hz, 2H), 4.52 (s, 2H), 3.13 (q, J=6.7 Hz, 2H), 1.50-1.36 (m, 2H), 1.26 (h, J=7.3 Hz, 2H), 0.86 (t, J=7.3 Hz, 3H). LCMS: Rt=0.77 min, m/z=412.3 [M+H].
2-oxo-5-(4-(2-oxo-2-(pyridin-3-ylamino)ethoxy)phenyl)-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (201) was obtained using the method described for the synthesis of 5-(4-(2-morpholino-2-oxoethoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (199) except morpholine was replaced with pyridin-3-amine. 1H NMR (500 MHz, DMSO-d6) δ 10.50 (s, 1H), 8.89 (d, J=2.5 Hz, 1H), 8.45 (s, 1H), 8.37 (d, J=4.8 Hz, 1H), 8.27 (s, 1H), 8.24-8.11 (m, 2H), 7.50 (dd, J=8.4, 4.8 Hz, 1H), 7.33-7.27 (m, 2H), 7.13-7.08 (m, 2H), 4.82 (s, 2H). LCMS: Rt=0.54 min, m/z=433.3 [M+H].
5-(4-((4-methoxytetrahydro-2H-pyran-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide, (SFC peak 1) (202) and 5-(4-((4-methoxytetrahydro-2H-pyran-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide, (SFC peak 2) (203) were obtained after SFC purification of the product made using step 2 in the procedure used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (54), except 4,4,5,5-tetramethyl-2-(4-((3-nitrobenzyloxy)phenyl)-1,3,2-dioxaborolane was replaced with 2-(4-((4-methoxytetrahydro-2H-pyran-2-yl)methoxy)phenyl-4,4,5,5-tetramethyl-1,3,2-dioxaborolane and the diastereomers separated by chiral SFC.
5-(4-((4-methoxytetrahydro-2H-pyran-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide, (SFC peak 1) (202): 1H NMR (400 MHz, MeOD-d4) δ 8.28 (br. s, 1H), 7.24 (br. d, J=8.1 Hz, 2H), 7.01 (br. d, J=8.1 Hz, 2H), 4.13-3.96 (m, 3H), 3.82-3.69 (m, 1H), 3.56-3.44 (m, 2H), 3.39 (s, 3H), 2.24-1.97 (m, 2H), 1.50-1.22 (m, 2H); LCMS: Rt=0.74 min, m/z=427.0 [M+H]; Chiral HPLC: Rt=2.42 min, d.e value=98%.
5-(4-((4-methoxytetrahydro-2H-pyran-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide, (SFC peak 2) (203): 1H NMR (400 MHz, MeOD-d4) δ 8.08 (s, 1H), 7.18 (d, J=8.6 Hz, 2H), 6.95 (d, J=8.6 Hz, 2H), 4.10-4.00 (m, 3H), 3.80-3.72 (m, 1H), 3.56-3.46 (m, 2H), 3.39 (s, 3H), 2.21-1.96 (m, 2H), 1.48-1.25 (m, 2H); LCMS: Rt=0.74 min, m/z=427.0 [M+H]; Chiral HPLC: Rt=3.17 min, d.e value=97%.
Step 1: To a solution of 4-bromophenol (10 g, 57.8 mmol) in DMF (200 mL) was added K2CO3 (12 g, 86.7 mmol) followed by 2-bromo-1,1-diethoxyethane (17 g, 86.7 mmol). Then the mixture was stirred at 120° C. for 14 hr. The reaction mixture was diluted with water (1 L) and extracted with EA (300 mL×2), the organic layers were combined and dried over anhydrous Na2SO4, filtered and concentrated to give the crude product which was purified by silica gel flash column chromatography (PE/EA=50/1) to give 1-bromo-4-(2,2-diethoxyethoxy)benzene. 1H NMR (400 MHz, CDCl3) δ 7.39-7.33 (m, 2H), 6.84-6.76 (m, 2H), 4.82 (t, J=5.2 Hz, 1H), 3.97 (d, J=5.1 Hz, 2H), 3.82-3.55 (m, 4H), 1.29-1.21 (m, 6H).
Step 2: To a stirred solution of 1-bromo-4-(2,2-diethoxyethoxy)benzene (15 g, 51.9 mmol) in THF/H2O (1:1, 200 mL) was added conc. HCl (34.6 mL) and the reaction was warmed to 40° C. and stirred for 3 h. The reaction mixture was evaporated to remove the EtOH and the resulting residue extracted with DCM (2×20 mL). The organic layers were combined and dried over anhydrous Na2SO4, filtered, and evaporated to dryness under reduced pressure. The residue was purified by silica gel chromatography (PE/EA=8/1) to give 2-(4-bromophenoxy)acetaldehyde. LCMS: Rt=0.63 min, m/z=214.8, 216.8 [M+H]; 1H NMR (400 MHz, CDCl3) δ=9.83 (s, 1H), 7.43-7.39 (m, 2H), 6.80-6.76 (m, 2H), 4.55 (s, 2H).
Step 3: To a solution of 2-(4-bromophenoxy)acetaldehyde (4.0 g, 13.6 mmol) and (E)-((4-methoxybuta-1,3-dien-2-yl)oxy)trimethylsilane (2.57 g, 14.9 mmol) in THF (16 mL) was added dropwise ZnCl2 (1M in THF, 14.9 mL, 14.9 mmol) at 0° C. and the reaction mixture stirred under N2 at 25° C. for 48 h. The reaction mixture was diluted with water (160 mL) and extracted with EA (100 mL×2). The combined organic layers were dried and concentrated to give crude product which was dissolved in DCM (16 mL). TFA (8 mL) was added and the reaction was stirred at rt for 2 h. The reaction mixture was diluted with water (100 mL), extracted with DCM (100 mL×2), and the combined organic layers were adjusted to pH=10 with saturated NaHCO3 (aq., 200 mL). The organic layer was dried and concentrated to give a residue which was purified by silica gel 12 chromotography (PE/EA=4/1) to give 6-((4-bromophenoxy)methyl)-2,3-dihydro-4H-pyran-4-one. LCMS: Rt=0.79 min, m/z=282.9, 284.9, [M+H]; 1H NMR (400 MHz, CDCl3) δ=7.44-7.39 (m, 3H), 6.85-6.79 (m, 2H), 5.48 (dd, J=1.0, 6.0 Hz, 1H), 4.84-4.73 (m, 1H), 4.19 (dd, J=1.8, 4.4 Hz, 2H), 4.22-4.17 (m, 1H), 2.85 (dd, J=14.0, 16.8 Hz, 1H), 2.55 (ddd, J=1.0, 3.6, 16.8 Hz, 1H)
Step 4: To a solution of 6-((4-bromophenoxy)methyl)-2,3-dihydro-4H-pyran-4-one (2.0 g, 7.06 mmol) in EtOH (40 mL) at room temperature was added CeCl3·7H2O (2.6 g, 7.06 mmol). After the atmosphere was replaced with nitrogen, the mixture was cooled to −70° C. and sodium borohydride (534 mg, 14.1 mmol) was added. The mixture was then stirred at −70° C. for 1 h. A saturated aqueous NaHCO3 solution (50 mL) was added and the mixture warmed to room temperature before filtering through Celite®. The filtrate was extracted with DCM (50 mL×3) and the combined organic layers were washed with brine and then dried over Na2SO4, filtered and the solvent was evaporated to give crude 6-((4-bromophenoxy)methyl)-4-methoxy-3,4-dihydro-2H-pyran which was used to the next step without further purification.
Step 5: 2-(4-((4-methoxy-3,4-dihydro-2H-pyran-6-yl)methoxy)phenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane was obtained using step 1 in the procedure used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 6-((4-bromophenoxy)methyl)-4-methoxy-3,4-dihydro-2H-pyran. LCMS: Rt=0.927 min, m/z=315.1 [M−MeOH+H]; 1H NMR (400 MHz, CDCl3) δ=7.75 (d, J=8.6 Hz, 2H), 6.94-6.90 (m, 2H), 6.44 (dd, J=0.9, 6.3 Hz, 1H), 4.94-4.88 (m, 1H), 4.46-4.34 (m, 1H), 4.24 (dd, J=6.5, 10.1 Hz, 1H), 4.09-4.01 (m, 2H), 3.37 (s, 3H), 2.31-2.22 (m, 1H), 1.90 (ddd, J=7.7, 9.6, 13.4 Hz, 1H), 1.34 (s, 12H).
Step 6: To a solution of 2-(4-((4-methoxy-3,4-dihydro-2H-pyran-6-yl)methoxy)phenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (700 mg, 1.54 mmol) in MeOH (14 mL) at 25° C. was added 10% Pd/C (140 mg, 0.31 mmol) under H2 and the reaction mixture stirred at 25° C. for 0.5 h. The mixture was filtered and concentrated to give 2-(4-((4-methoxytetrahydro-2H-pyran-2-yl)methoxy)phenyl))-4,4,5,5-tetramethyl-1,3,2-dioxaborolane which was used without further purification. 1H NMR (400 MHz, CDCl3) δ=7.74 (d, J=8.6 Hz, 2H), 6.95-6.86 (m, 2H), 4.17-4.03 (m, 2H), 3.96 (dd, J=4.0, 9.9 Hz, 1H), 3.77-3.69 (m, 1H), 3.53-3.48 (m, 2H), 3.47-3.41 (m, 1H), 3.40-3.36 (m, 3H), 2.17-2.10 (m, 1H), 2.03-1.97 (m, 1H), 1.58-1.47 (m, 1H), 1.33 (s, 12H); LCMS: Rt=0.97 min, m/z=371.2 [M+Na].
5-(4-(((2S,5S)-5-(hydroxymethyl)-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (204) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 2-((benzyloxy)methyl)-5-(iodomethyl)-1,4-dioxane. 1H NMR (400 MHz, DMSO-d6) δ 10.04 (br. s, 1H), 8.43-8.17 (m, 1H), 7.94 (br.s, 1H), 7.47-7.26 (m, 1H), 7.22-7.12 (m, 2H), 7.04-6.88 (m, 2H), 4.24-4.08 (m, 2H), 4.05-3.95 (m, 2H), 3.94-3.87 (m, 2H), 3.86-3.78 (m, 2H), 3.72 (m, 4H); LCMS: Rt=0.61 min, m/z=429.1 [M+H].
Step 1: To a solution of 2-phenyl-1,3-dioxan-5-ol (5.0 g, 27.8 mmol) in THF (50 mL) was added NaH (2.2 g, 55.5 mmol) batchwise at 0° C. The mixture was stirred at 0° C. for 0.5 h. Allyl bromide (6.7 g, 55.5 mmol) was added and the reaction mixture was stirred at 25° C. for 1.5 hrs. The reaction was slowly quenched by addition of water and the reaction mixture was then extracted with EA (50 mL×3). The organic layers were combined, washed with brine (10 mL×3), dried over anhydrous Na2SO4, filtered and concentrated in vacuo. The residue was purified by silica gel chromatography (PE/EA=20/1) to give 5-(allyloxy)-2-phenyl-1,3-dioxane. TLC (PE/EA=5:1) Rf=0.4. 1H NMR (400 MHz, CHLOROFORM-d) δ 7.52-7.40 (m, 2H), 7.26 (s, 3H), 5.96-5.83 (m, 1H), 5.48 (s, 1H), 5.33-5.20 (m, 1H), 5.19-5.07 (m, 1H), 4.25 (s, 2H), 4.08 (d, J=5.6 Hz, 2H), 4.02-3.95 (m, 2H), 3.31-3.24 (m, 1H).
Step 2: DIBAL-H (1 M solution in DCM, 45.4 mL, 45.4 mmol) was added slowly to a solution of 5-(allyloxy)-2-phenyl-1,3-dioxane (5.0 g, 22.7 mmol) in DCM (35 mL) cooled with an ice bath. After stirring at 0° C. for 2 hrs, the reaction was slowly quenched by addition of water and the reaction mixture was then extracted with EA (50 mL×3). The organic layers were combined, washed with brine (5 mL×3), dried over anhydrous Na2SO4, filtered and concentrated in vacuo. The residue was purified by silica gel chromatography (PE/EA=20/1) to give 2-(allyloxy)-3-(benzyloxy)propan-1-ol. TLC (PE:EA=3:1) Rf=0.3; 1H NMR (400 MHz, CHLOROFORM-d) δ 7.41-7.29 (m, 5H), 6.02-5.88 (m, 1H), 5.31 (qd, J=1.6, 17.2 Hz, 1H), 5.21 (qd, J=1.4, 10.4 Hz, 1H), 4.57 (d, J=1.1 Hz, 2H), 4.24-4.07 (m, 2H), 3.85-3.53 (m, 6H).
Step 3: NIS (3.34 g, 14.85 mmol) was added to a solution of 2-(allyloxy)-3-(benzyloxy)propan-1-ol (1.65 g, 7.42 mmol) in dry MeCN (25 mL). After 3 hrs of stirring at 80° C. the reaction mixture was washed with a saturated Na2SO3 solution (30 mL) and then extracted with EA (30 mL×3). The organic layers were combined, washed with brine (10 mL), dried over anhydrous Na2SO4, filtered and concentrated in vacuo. The residue was purified by reverse phase chromatography to give 2-((benzyloxy)methyl)-5-(iodomethyl)-1,4-dioxane. LCMS: Rt=0.87 min, m/z=371.0 [M+Na]; 1H NMR (400 MHz, CHLOROFORM-d) δ 7.27-7.25 (m, 5H), 4.51-4.47 (m, 2H), 4.23-3.25 (m, 10H).
5-(4-((2,8-dioxa-5-azaspiro[3.5]nonan-6-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (205) was made using steps 2 and 3 in the procedure used to make 2-oxo-5-(4-((tetrahydro-2H-pyran-4-yl)methyl)phenyl)-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (52), except 4-(4-bromobenzylidene)tetrahydro-2H-pyran was replaced with 6-((4-bromophenoxy)methyl)-2,8-dioxa-5-azaspiro[3.5]nonane. 1H NMR (400 MHz, DMSO-d6) δ 8.78 (s, 1H), 8.22 (s, 1H), 8.03 (s, 1H), 7.26 (d, J=8.8 Hz, 2H), 7.03 (d, J=8.8 Hz, 2H), 4.52-4.45 (m, 2H), 4.30 (d, J=6.4 Hz, 1H), 4.22 (d, J=6.4 Hz, 1H), 3.99 (d, J=10.8 Hz, 1H), 3.87 (d, J=6.0 Hz, 2H), 3.81 (m, 1H), 3.25 (m, 2H), 3.12 (m, 1H); LCMS: Rt=0.55 min, m/z=440.2 [M+H].
Step 1: To a solution of (3-aminooxetan-3-yl)methanol (2.3 g, 22.3 mmol) in DMF (25 mL) was added NaH (1.07 g, 26.8 mmol) at 0° C. and the reaction mixture stirred 0° C. for 1 hr. Tributyl(iodomethyl)stannane (11.5 g, 26.8 mmol) was then added at 0° C. and the reaction mixture was warmed to 25° C. and stirred for 11 h. The reaction mixture was added to an aqueous solution of NH4Cl (100 mL) and extracted with EA (100 mL×2). The combined organic layers were dried over anhydrous Na2SO4, filtered and concentrated. The residue was purified by column (PE/EA=15/1 to 3/1) to give 3-(((tributylstannyl)methoxy)methyl)oxetan-3-amine. 1H NMR (400 MHz, CDCl3) δ 4.48 (d, J=6.8 Hz, 2H), 4.41 (d, J=6.8 Hz, 2H, 3.80 (s, 2H), 3.76 (s, 2H), 1.78 (b rs, 2H), 2.28 (s, 6H), 1.56-1.47 (m, 6H), 1.38-1.25 (m, 6H), 0.96-0.87 (m, 15H).
Step 2: To a solution of 3-(((tributylstannyl)methoxy)methyl)oxetan-3-amine (4.06 g, 10 mmol) in DCM (20 mL) at 25° C. was added 2-(4-bromophenoxy)acetaldehyde (2.15 g, 10 mmol) and MS 4A (1 g, ca. 100 mg/mmol). The reaction mixture was stirred at 25° C. for 12 hr and filtered through Celite®. The filtrate was concentrated under reduced pressure to afford the crude imine. Separately, 2,6-lutidine (1.07 g, 10 mmol) was added in one portion to a suspension of HFIP (40 mL) and anhydrous Cu(OTf)2 (3.6 g, 10 mmol) and stirred at 25° C. for 1 hr. A solution of the imine (5.0 g, crude) in DCM (20 mL) was added in one portion and the resulting mixture was stirred at 25° C. for 11 hrs. The reaction was quenched at 25° C. with 10% aq NH4OH (20 mL), and stirred vigorously for 15 min. The layers were separated and the aqueous layer was extracted with DCM (2×200 mL). The combined organic layers were washed with H2O (2×100 mL) and brine (100 mL), dried over Na2SO4, filtered, and concentrated. The residue was purified by column (PE/EA=3/1) to give 6-((4-bromophenoxy)methyl)-2,8-dioxa-5-azaspiro[3.5]nonane. 1H NMR (400 MHz, CDCl3) δ 7.42-7.36 (m, 2H), 6.82-6.76 (m, 2H), 4.72 (d, J=6.4 Hz, 1H), 4.58 (m, 1H), 4.44-4.35 (m, 2H), 4.20-4.08 (m, 2H), 3.90-3.82 (m, 2H), 3.78-3.68 (m, 1H), 3.59 (m, 1H), 3.39-3.26 (m, 2H).
5-(4-((5-methyl-2,8-dioxa-5-azaspiro[3.5]nonan-6-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (206) was made using steps 2 and 3 in the procedure used to make 2-oxo-5-(4-((tetrahydro-2H-pyran-4-yl)methyl)phenyl)-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (52), except 4-(4-bromobenzylidene)tetrahydro-2H-pyran was replaced with 6-((4-bromophenoxy)methyl)-5-methyl-2,8-dioxa-5-azaspiro[3.5]nonane. 1H NMR (400 MHz, DMSO-d6) δ 8.17 (s, 1H), 8.10 (s, 1H), 7.75 (s, 1H), 7.22 (d, J=8.6 Hz, 2H), 7.01 (d, J=8.6 Hz, 2H), 4.80 (d, J=6.8 Hz, 1H), 4.72 (d, J=6.8 Hz, 1H), 4.21-4.09 (m, 3H), 3.88-3.80 (m, 2H), 3.78-3.70 (m, 2H), 3.61 (m, 1H), 2.85-2.76 (m, 1H), 2.60 (s, 3H); LCMS: Rt=0.56 min, m/z=454.1 [M+H].
To a solution of 6-((4-bromophenoxy)methyl)-2,8-dioxa-5-azaspiro[3.5]nonane (150 mg, 0.48 mmol) and CHOOH (442 mg, 9.60 mmol) in MeOH (2 mL) was added paraformaldehyde (194 mg, 2.39 mmol) at 25° C. The mixture was stirred at 80° C. for 12 hrs. The mixture was cooled to 0° C. and then poured into ice-water (5 mL) and stirred for 15 min. The aqueous phase was extracted with ethyl acetate (10 mL×2). The combined organic phases were washed with aqueous Na2CO3 (5 mL) and brine (5 mL), dried over anhydrous Na2SO4, filtered and concentrated in vacuum. The residue was purified by prep-TLC (EA/MeOH=10/1) to give 6-((4-bromophenoxy)methyl)-5-methyl-2,8-dioxa-5-azaspiro[3.5]nonane. LCMS: Rt=0.57 min, m/z=328.0, 330 [M+H].
2-oxo-6-(trifluoromethyl)-5-(4-((4,5,5-trimethylmorpholin-3-yl)methoxy)phenyl)-1,2-dihydropyridine-3-carboxamide (207) was made using steps 2 and 3 in the procedure used to make 2-oxo-5-(4-((tetrahydro-2H-pyran-4-yl)methyl)phenyl)-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (52), except 4-(4-bromobenzylidene)tetrahydro-2H-pyran was replaced with 5-((4-bromophenoxy)methyl)-3,3,4-trimethylmorpholine. 1H NMR (400 MHz, DMSO-d6) δ=9.07 (brs, 1H), 8.13 (s, 1H), 7.84 (brs, 1H), 7.23 (d, J=8.0 Hz, 2H), 7.01 (d, J=8.0 Hz, 2H), 4.12 (m, 1H), 3.93 (m, 1H), 3.84 (m, 1H), 3.39 (s, 2H), 3.31 (m 1H), 2.87 (m, 1H), 2.23 (s, 3H), 1.00 (m, 6H). LCMS: Rt=0.74 min, m/z=440.4 (M+H).
5-((4-bromophenoxy)methyl)-3,3,4-trimethylmorpholine was obtained using the procedure described for the synthesis of 6-((4-bromophenoxy)methyl)-5-methyl-2,8-dioxa-5-azaspiro[3.5]nonane except 6-((4-bromophenoxy)methyl)-2,8-dioxa-5-azaspiro[3.5]nonane was replaced with 5-((4-bromophenoxy)methyl)-3,3-dimethylmorpholine.
5-((4-bromophenoxy)methyl)-3,3-dimethylmorpholine was obtained using the procedure described for the synthesis of 6-((4-bromophenoxy)methyl)-2,8-dioxa-5-azaspiro[3.5]nonane except (3-aminooxetan-3-yl)methanol was replaced with 2-amino-2-methylpropan-1-ol.
5-(4-(((5S)-4,5-dimethylmorpholin-3-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (208) was made using steps 2 and 3 in the procedure used to make 2-oxo-5-(4-((tetrahydro-2H-pyran-4-yl)methyl)phenyl)-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (52), except 4-(4-bromobenzylidene)tetrahydro-2H-pyran was replaced with (5S)-3-((4-bromophenoxy)methyl)-4,5-dimethylmorpholine. 1H NMR: (400 MHz, DMSO-d6), δ: 9.53 (br, s, 1H), 8.25 (m, 1H), 8.03 (br, s, 1H), 7.63 (br, s, 1H), 7.23 (m, 2H), 6.99 (m, 2H), 4.15 (m, 1H), 3.92 (m, 2H), 3.65 (m, 1H), 3.62 (m, 1H), 3.42 (m, 1H), 3.37 (m, 1H), 2.29 (s, 3H), 0.93 (d, J=0.64 Hz, 3H). LCMS: Rt=0.73 min, m/z=426.3. (M+H)
(5S)-3-((4-bromophenoxy)methyl)-4,5-dimethylmorpholine was obtained using the procedure described for the synthesis of 6-((4-bromophenoxy)methyl)-5-methyl-2,8-dioxa-5-azaspiro[3.5]nonane except 6-((4-bromophenoxy)methyl)-2,8-dioxa-5-azaspiro[3.5]nonane was replaced with (5S)-3-((4-bromophenoxy)methyl)-5-methylmorpholine.
(5S)-3-((4-bromophenoxy)methyl)-5-methylmorpholine was obtained using the procedure described for the synthesis of 6-((4-bromophenoxy)methyl)-2,8-dioxa-5-azaspiro[3.5]nonane except (3-aminooxetan-3-yl)methanol was replaced with (S)-2-aminopropan-1-ol.
5-(4-(((3S,5S)-5-cyclopropyl-4-methylmorpholin-3-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (209) was made using steps 2 and 3 in the procedure used to make 2-oxo-5-(4-((tetrahydro-2H-pyran-4-yl)methyl)phenyl)-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (52), except 4-(4-bromobenzylidene)tetrahydro-2H-pyran was replaced with (3S,5S)-3-((4-bromophenoxy)methyl)-5-cyclopropyl-4-methylmorpholine. 1H NMR (400 MHz, DMSO-d6) δ=8.62 (br s, 1H), 8.08 (s, 1H), 7.90 (br s, 1H), 7.17 (br d, J=8.6 Hz, 2H, 2H), 6.91 (d, J=8.6 Hz, 2H), 4.05 (m, 1H), 3.82 (m, 2H), 3.79 (m, 1H), 3.17 (m, 3H), 2.37 (s, 3H), 1.24 (m, 2H), 0.53 (m, 1H), 0.33 (m, 2H), 0.15 (m, 1H), 0.00 (m, 1H). LCMS: Rt=0.74 min, m/z=452.4 (M+H). Chiral HPLC: Rt=1.54 min, de value=100%.
(3S,5S)-3-((4-bromophenoxy)methyl)-5-cyclopropyl-4-methylmorpholine was obtained using the procedure described for the synthesis of 6-((4-bromophenoxy)methyl)-5-methyl-2,8-dioxa-5-azaspiro[3.5]nonane except 6-((4-bromophenoxy)methyl)-2,8-dioxa-5-azaspiro[3.5]nonane was replaced with (3S,5S)-3-((4-bromophenoxy)methyl)-5-cyclopropylmorpholine.
(3S,5S)-3-((4-bromophenoxy)methyl)-5-cyclopropylmorpholine was obtained using the procedure described for the synthesis of 6-((4-bromophenoxy)methyl)-2,8-dioxa-5-azaspiro[3.5]nonane except (3-aminooxetan-3-yl)methanol was replaced with (S)-2-amino-2-cyclopropylethan-1-ol.
5-(4-(((3R,5S)-5-cyclopropyl-4-methylmorpholin-3-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (210) was obtained by SFC of the mixture containing Example 209. 1H NMR (400 MHz, DMSO-d6) δ=8.85 (br s, 1H), 8.17 (s, 1H), 7.95 (br s, 1H), 7.24 (d, J=8.4 Hz, 2H), 7.04 (d, J=8.4 Hz, 2H), 4.21 (m, 2H), 3.71 (m, 1H), 3.67 (m, 4H), 3.03 (m, 1H), 2.57 (s, 3H), 1.82 (m, 1H), 0.59 (m, 2H), 0.57 (m, 1H), 0.28 (m, 1H), 0.05 (m, 1H). LCMS: Rt=0.72 min, m/z=452.4 (M+H). Chiral HPLC: Rt=1.74 min, de value=91.9%.
5-(4-(((5S)-5-isopropyl-4-methylmorpholin-3-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (211) was made using steps 2 and 3 in the procedure used to make 2-oxo-5-(4-((tetrahydro-2H-pyran-4-ylmethylphenyl)-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (52), except 4-(4-bromobenzylidene)tetrahydro-2H-pyran was replaced with (5S)-3-((4-bromophenoxy)methyl)-5-isopropyl-4-methylmorpholine. 1H NMR: (400 MHz, DMSO-d6), δ=8.62 (br s, 2H), 8.24 (s, 1H), 8.09 (br s, 1H), 7.27 (m, 2H), 7.07 (m, 2H), 4.28 (m, 1H), 4.26 (m, 1H), 3.86 (m, 3H), 3.28 (m, 2H), 2.58 (m, 2H), 2.41 (s, 1.5H), 2.27 (s, 1.5H), 0.90 (m, 6H). LCMS: Rt=0.74 min, m/z=454.4 (M+H).
(5S)-3-((4-bromophenoxy)methyl)-5-isopropyl-4-methylmorpholine was obtained using the procedure described for the synthesis of 6-((4-bromophenoxy)methyl)-5-methyl-2,8-dioxa-5-azaspiro[3.5]nonane except 6-((4-bromophenoxy)methyl)-2,8-dioxa-5-azaspiro[3.5]nonane was replaced with (5S)-3-((4-bromophenoxy)methyl)-5-isopropylmorpholine.
(5S)-3-((4-bromophenoxy)methyl)-5-isopropylmorpholine was obtained using the procedure described for the synthesis of 6-((4-bromophenoxy)methyl)-2,8-dioxa-5-azaspiro[3.5]nonane except (3-aminooxetan-3-yl)methanol was replaced with ((S)-2-amino-3-methylbutan-1-ol.
5-(4-((5-bromopyridin-3-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (212) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 3-bromo-5-(bromomethyl)pyridine. 1H NMR: (400 MHz, DMSO-d6) δ: 10.61 (br. s, 1H), 8.69 (s, 2H), 8.13 (s, 1H), 7.82 (s, 1H), 7.15 (m, 2H), 7.02 (m, 2H), 5.17 (s, 2H); LCMS: Rt=0.90 min, m/z=470.1 [M+H].
5-(4-((5-chloropyridin-3-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (213) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 3-(bromomethyl)-5-chloropyridine. 1H NMR: (400 MHz, DMSO-d6), δ 8.67 (d, J=1.6 Hz, 1H), 8.63 (d, J=2.0 Hz, 1H), 8.07 (m, 1H), 7.90 (s, 1H), 7.20 (d, J=8.8 Hz, 2H), 7.06 (d, J=8.8 Hz, 2H), 5.20 (s, 2H); LCMS: Rt=0.92 min, m/z=424.2 [M+H].
2-oxo-5-(4-(pyridazin-3-ylmethoxy)phenyl)-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (214) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 3-(bromomethyl)pyridazine. 1H NMR (500 MHz, DMSO-d6) δ 13.65 (br. s, 1H), 9.24 (dd, J=4.9, 1.7 Hz, 1H), 8.46 (br. s, 1H), 8.28 (s, 1H), 8.18 (br. s, 1H), 7.87 (dd, J=8.4, 1.7 Hz, 1H), 7.78 (dd, J=8.5, 4.9 Hz, 1H), 7.34-7.25 (m, 2H), 7.21-7.11 (m, 2H), 5.47 (s, 2H). LCMS: Rt=0.61 min, m/z=391.2 [M+H].
2-oxo-5-(4-(pyrimidin-4-ylmethoxy)phenyl)-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (215) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 4-(bromomethyl)pyrimidine. 1H NMR (400 MHz, DMSO-d6), δ: 13.65 (br. s, 1H), 9.21 (s, 1H), 8.89 (d, J=4.4 Hz, 1H), 8.47 (s, 1H), 8.29 (s, 1H), 8.17 (s, 1H), 7.67 (d, J=4.4 Hz, 1H), 7.32 (d, J=8.4 Hz, 2H), 7.15 (d, J=8.8 Hz, 2H), 5.29 (s, 2H); LCMS: Rt=0.67 min, m/z=391.1 [M+H].
5-(4-((6-chloropyrazin-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (216) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 2-(bromomethyl)-6-chloropyrazine. 1H NMR (400 MHz, DMSO-d6) δ 9.82 (s, 1H), 8.84 (s, 1H), 8.81 (s, 1H), 7.99 (s, 1H), 7.47 (s, 1H), 7.23 (d, J=7.6 Hz, 2H), 7.11 (d, J=7.6 Hz, 2H), 5.29 (s, 2H); LCMS: Rt=0.74 min, m/z=425.0 [M+H].
5-(4-((1-ethyl-1H-pyrazol-5-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (217) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 5-(bromomethyl)-1-ethyl-1H-pyrazole. 1H NMR (400 MHz, MeOD-d4) δ 8.30 (s, 1H), 7.47 (d, J=2.0 Hz, 1H), 7.30 (d, J=8.4 Hz, 2H), 7.12 (d, J=8.8 Hz, 2H), 6.42 (d, J=1.6 Hz, 1H), 5.21 (s, 2H), 4.28 (m, 2H), 1.47 (m, 3H); 19FNMR: (377 MHz, MeOD-d4) δ −62.75 (br.s, 3F); LCMS: Rt=0.74 min, m/z=407.0 [M+H].
5-(4-((1-(2-methoxyethyl)-1H-pyrazol-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (218) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 4-(bromomethyl)-1-(2-methoxyethyl)-1H-pyrazole. 1H NMR (400 MHz, CDCl3) δ 9.08 (br. s, 1H), 8.58 (s, 1H), 7.60 (d, J=6.8 Hz, 2H), 7.24 (d, J=8.4 Hz, 2H), 7.02 (d, J=8.8 Hz, 2H), 5.95-5.94 (m, 1H), 5.00 (s, 2H), 4.32-4.29 (m, 2H), 3.78-3.75 (m, 2H), 3.35 (s, 3H); 19F NMR (376 MHz, CHLOROFORM-d) δ −61.02 (s, 1F), −60.97-61.10 (m, 1F); LCMS: Rt=0.81 min, m/z=437.5 [M+H].
5-(4-((1-(2-methoxyethyl)-1H-pyrazol-5-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (219) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyloxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 5-(bromomethyl)-1-(2-methoxyethyl)-1H-pyrazole. 1H NMR: (400 MHz, Chloroform-d3) δ 9.06 (d, J=1.2 Hz, 1H), 8.54 (s, 1H), 7.52 (d, J=1.6 Hz, 1H), 7.25 (d, J=8.8 Hz, 2H), 7.04 (d, J=8.4 Hz, 2H), 6.34 (d, J=2.0 Hz, 1H), 5.91 (d, J=2.8 Hz, 1H), 5.16 (s, 2H), 4.40 (m, 2H), 3.80 (m, 2H), 3.31 (s, 3H); 19F NMR: (377 MHz, Chloroform-d3) δ 61.11 (s, 1F), −60.84-61.46 (m, 1F); LCMS: Rt=0.82 min, m/z=437 [M+H]
5-(4-((1-methyl-1H-pyrazol-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (220) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyloxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 4-(bromomethyl)-1-methyl-1H-pyrazole. 1H NMR (400 MHz, DMSO-d6) δ 8.14 (s, 1H), 7.81 (s, 1H), 7.51 (s, 1H), 7.22 (d, J=8.3 Hz, 2H), 7.03 (d, J=8.5 Hz, 2H), 4.98 (s, 2H), 3.83 (s, 3H); 19F NMR (376 MHz, DMSO-d6) δ −60.36 (s, 3F); LCMS: Rt=0.65 min, m/z=393.0 [M+H].
5-(4-((1-(cyclopropylmethyl)-1H-pyrazol-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (221) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyloxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 4-(bromomethyl)-1-(cyclopropylmethyl)-1H-pyrazole. 1H NMR (400 MHz, DMSO-d6) δ 8.14 (s, 1H), 7.90 (s, 1H), 7.53 (s, 1H), 7.24 (d, J=8.6 Hz, 2H), 7.06 (d, J=8.6 Hz, 2H), 5.00 (s, 2H), 3.96 (d, J=7.2 Hz, 2H), 2.09 (s, 1H), 1.28-1.17 (m, 1H), 0.57-0.48 (m, 2H), 0.40-0.32 (m, 2H); 19F NMR (376 MHz, DMSO-d6) δ −40.38 (s, 3F); LCMS: Rt=0.85 min, m/z=433.1 [M+H].
5-(4-((1-ethyl-1H-pyrazol-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (222) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyloxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 4-(bromomethyl)-1-ethyl-1H-pyrazole. 1H NMR (400 MHz, methanol-d4) δ 8.34-8.28 (m, 1H), 7.76 (s, 1H), 7.57 (s, 1H), 7.25 (d, J=8.5 Hz, 2H), 7.05 (d, J=8.7 Hz, 2H), 5.04 (s, 2H), 4.19 (q, J=7.3 Hz, 2H), 1.45 (t, J=7.3 Hz, 3H); 19F NMR (376 MHz, methanol-d4) δ −62.75 (br.s, 3F); LCMS: Rt=0.83 min, m/z=407.1 [M+H].
5-(4-(isoxazol-3-ylmethoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (223) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 3-(bromomethyl)isoxazole. 1H NMR: (400 MHz, DMSO-d6), δ: 8.97 (d, J=1.0 Hz, 2H), 8.18 (d, J=7.1 Hz, 1H), 7.95 (s, 1H), 7.27 (d, J=8.4 Hz, 2H), 7.11 (d, J=8.7 Hz, 2H), 6.74 (d, J=1.3 Hz, 1H), 5.29 (s, 2H); LCMS: Rt=0.68 min, m/z=380.0 [M+H].
5-(4-((5-methylisoxazol-3-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (224) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyloxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 3-(bromomethyl)-5-methylisoxazole. 1H NMR (400 MHz, DMSO-d6) δ 8.17 (d, J=6.2 Hz, 1H), 7.94 (s, 1H), 7.27 (d, J=8.4 Hz, 2H), 7.09 (d, J=8.7 Hz, 2H), 6.37 (s, 1H), 5.19 (s, 2H), 2.43 (s, 3H); LCMS: Rt=0.71 min, m/z=394.0 [M+H].
5-(4-(oxetan-2-ylmethoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (225) was made using a procedure similar to that used to make 5-(4-((1-acetylpiperidin-4-ylmethoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (55), except 1-(4-(hydroxymethyl)piperidin-1-yl)ethan-1-one was replaced with oxetan-2-ylmethanol. 1H NMR (400 MHz, DMSO-d6) δ 8.15 (s, 1H), 8.00-7.71 (m, 1H), 7.23 (d, J=8.0 Hz, 2H), 7.03 (d, J=8.0 Hz, 2H), 5.03 (m, 1H), 4.61-4.45 (m, 2H), 4.23-4.17 (m, 1H), 4.16-4.11 (m, 1H), 2.76-2.64 (m, 2H); LCMS: Rt=0.66 min, m/z=369.1 [M+H].
5-(4-((3-fluorooxetan-3-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (226) was made using a procedure similar to that used to make 5-(4-((1-acetylpiperidin-4-ylmethoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (55), except 1-(4-(hydroxymethyl)piperidin-1-yl)ethan-1-one was replaced with (3-fluorooxetan-3-yl)methanol. 1H NMR (500 MHz, DMSO-d6) δ 13.66 (br. s, 1H), 8.52 (br. s, 1H), 8.26 (s, 1H), 8.13 (br. s, 1H), 7.30 (d, J=8.4 Hz, 2H), 7.08 (d, J=8.6 Hz, 2H), 4.79-4.67 (m, 4H), 4.48 (d, J=22.1 Hz, 2H). LCMS: Rt=0.69 min, m/z=387.2 [M+H].
5-(4-((3-methyl)oxetan-3-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (227) was made using a procedure similar to that used to make 5-(4-((1-acetylpiperidin-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (55), except 1-(4-(hydroxymethyl)piperidin-1-yl)ethan-1-one was replaced with (3-methyl)oxetan-3-yl)methanol. 1H NMR (500 MHz, DMSO-d6) δ 13.62 (br. s, 1H), 8.46 (br. s, 1H), 8.27 (s, 1H), 8.17 (br. s, 1H), 7.34-7.21 (m, 2H), 7.09-7.01 (m, 2H), 4.51 (d, J=5.8 Hz, 2H), 4.32 (d, J=5.8 Hz, 2H), 4.10 (s, 2H), 1.38 (s, 3H). LCMS: Rt=0.77 min, m/z=383.2 [M+H].
5-(4-((3-ethyl)oxetan-3-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (228) was made using a procedure similar to that used to make 5-(4-((1-acetylpiperidin-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (55), except 1-(4-(hydroxymethyl)piperidin-1-yl)ethan-1-one was replaced with (3-ethyl)oxetan-3-yl)methanol. 1H NMR (400 MHz, DMSO-d6) δ 8.22 (s, 1H), 8.15 (s, 1H), 7.27 (d, J=8.6 Hz, 2H), 7.07 (d, J=8.6 Hz, 2H), 4.47 (d, J=6.0 Hz, 2H), 4.36 (d, J=6.0 Hz, 2H), 4.15 (s, 2H), 1.81 (q, J=7.4 Hz, 2H), 0.92 (t, J=7.4 Hz, 3H). LCMS: Rt=0.72 min, m/z=397.1 [M+H].
5-(4-((3-(cyanomethyl)oxetan-3-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (229) was made using a procedure similar to that used to make 5-(4-((1-acetylpiperidin-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (55), except 1-(4-(hydroxymethyl)piperidin-1-yl)ethan-1-one was replaced with 2-(3-(hydroxymethyl)oxetan-3-yl)acetonitrile. 1H NMR (400 MHz, DMSO-d6) δ 8.97 (br. s, 1H), 8.17 (br. s, 1H), 7.90 (br. s, 1H), 7.27 (br.d, J=8.4 Hz, 2H), 7.07 (d, J=8.4 Hz, 2H), 4.56-4.50 (m, 4H), 4.27 (s, 2H), 3.09 (s, 2H); LCMS: Rt=0.65 min, m/z=408.1 [M+H].
5-(4-((2-oxaspiro[3.3]heptan-6-yl)oxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (230) was made using a procedure similar to that used to make 5-(4-((1-acetylpiperidin-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (55), except 1-(4-(hydroxymethyl)piperidin-1-yl)ethan-1-one was replaced with 2-oxaspiro[3.3]heptan-6-ol. LCMS: Rt=0.75 min, m/z=395.3 [M+H].
2-oxo-5-(4-((tetrahydrofuran-3-yl)methoxy)phenyl)-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (231) was made using a procedure similar to that used to make 5-(4-((1-acetylpiperidin-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (55), except 1-(4-(hydroxymethyl)piperidin-1-yl)ethan-1-one was replaced with (tetrahydrofuran-3-yl)methanol. 1H NMR (400 MHz, DMSO-d6) δ 8.33 (s, 2H), 7.81 (s, 1H), 7.13 (d, J=8.8 Hz, 2H), 7.05 (m, 1H), 6.94 (d, J=8.8 Hz, 2H), 3.96 (m, 2H), 3.81-3.79 (m, 3H), 3.67 (m, 2H), 3.54 (m, 1H), 2.07 (m, 1H), 1.70 (m, 1H); LCMS: Rt=0.70 min, m/z=383.1 [M+H].
2-oxo-5-(4-((tetrahydrofuran-2-yl)methoxy)phenyl)-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (232) was made using a procedure similar to that used to make 5-(4-((1-acetylpiperidin-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (55), except 1-(4-(hydroxymethyl)piperidin-1-yl)ethan-1-one was replaced with (tetrahydrofuran-2-yl)methanol. 1H NMR (500 MHz, DMSO-d6) δ 13.62 (br. s, 1H), 8.52 (br. s, 1H), 8.26 (s, 1H), 8.13 (br. s, 1H), 7.25 (d, J=8.3 Hz, 2H), 7.12-6.91 (m, 2H), 4.17 (qd, J=6.8, 3.9 Hz, 1H), 4.01 (dd, J=10.2, 4.0 Hz, 1H), 3.96 (dd, J=10.1, 6.3 Hz, 1H), 3.83-3.76 (m, 1H), 3.69 (td, J=7.7, 6.2 Hz, 1H), 2.01 (dtd, J=12.4, 7.7, 5.4 Hz, 1H), 1.95-1.78 (m, 2H), 1.74-1.61 (m, 1H). LCMS: Rt=0.78 min, m/z=383.3 [M+H].
5-(4-((3-methyl-2-oxooxazolidin-5-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (233) was made using a procedure similar to that used to make 5-(4-((1-acetylpiperidin-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (55), except 1-(4-(hydroxymethyl)piperidin-1-yl)ethan-1-one was replaced with 5-(hydroxymethyl)-3-methyloxazolidin-2-one. 1H NMR (400 MHz, DMSO-d6) δ 10.01 (br. s, 1H), 8.20 (s, 1H), 7.94 (s, 1H), 7.37 (br. s, 1H), 7.19 (d, J=8.4 Hz, 2H), 6.99 (d, J=8.4 Hz, 2H), 4.87 (m, 1H), 4.20 (m, 2H), 3.72 (m, 1H), 2.79 (s, 3H); LCMS: Rt=0.68 min, m/z=412.1 [M+H].
5-(4-((3-ethyl-2-oxooxazolidin-5-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (234) was made using a procedure similar to that used to make 5-(4-((1-acetylpiperidin-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (55), except 1-(4-(hydroxymethyl)piperidin-1-yl)ethan-1-one was replaced with 3-ethyl-5-(hydroxymethyl)oxazolidin-2-one. 1H NMR (400 MHz, DMSO-d6) δ 8.15 (s, 1H), 8.04 (s, 1H), 7.21 (d, J=7.9 Hz, 2H), 7.00 (d, J=8.4 Hz, 2H), 4.92-4.83 (m, 1H), 4.26-4.10 (m, 2H), 3.71 (m, 1H), 3.42 (m, 1H), 3.22 (m, 2H), 1.09 (m, 3H); LCMS: Rt=0.70 min, MS=426.1 [M+H].
5-(4-((3-methyl-2-oxooxazolidin-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (235) was made using a procedure similar to that used to make 5-(4-((1-acetylpiperidin-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (55), except 1-(4-(hydroxymethyl)piperidin-1-yl)ethan-1-one was replaced with 4-(hydroxymethyl)-3-methyloxazolidin-2-one. 1H NMR (400 MHz, DMSO-d6) δ 8.83 (br. s, 1H), 8.19 (m, 1H), 7.94 (br. s, 1H), 7.27 (d, J=8.4 Hz, 2H), 7.05 (d, J=8.4 Hz, 2H), 4.43 (m, 1H), 4.24 (m, 1H), 4.17 (m, 3H), 2.82 (s, 3H); LCMS: Rt=0.62 min, m/z=412.1 [M+H].
2-oxo-5-(4-((tetrahydro-2H-pyran-2-yl)methoxy)phenyl)-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (236) was made using a procedure similar to that used to make 5-(4-((1-acetylpiperidin-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (55), except 1-(4-(hydroxymethyl)piperidin-1-yl)ethan-1-one was replaced with (tetrahydro-2H-pyran-2-yl)methanol. 1H NMR (500 MHz, DMSO-d6) δ 13.63 (br. s, 1H), 8.46 (br. s, 1H), 8.28 (s, 1H), 8.17 (br. s, 1H), 7.32-7.22 (m, 3H), 7.08-6.99 (m, 3H), 3.99-3.93 (m, 3H), 3.93-3.87 (m, 1H), 3.68-3.60 (m, 1H), 3.40 (dd, J=11.4, 3.6 Hz, 3H), 1.83 (d, J=12.5 Hz, 1H), 1.71-1.60 (m, 1H), 1.58-1.43 (m, 3H), 1.34 (qd, J=12.4, 4.0 Hz, 1H). LCMS: Rt=0.88 min, m/z=397.3 [M+H].
Rac-5-(4-((1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide was made using a procedure similar to that used to make 5-(4-((1-acetylpiperidin-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (55), except 1-(4-(hydroxymethyl)piperidin-1-yl)ethan-1-one was replaced with (1,4-dioxan-2-yl)methanol.
Two Peaks were Obtained by SFC Separation:
SFC peak 1: 5-(4-((1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (237): 1H NMR (400 MHz, DMSO-d6) δ 13.65 (s, 1H), 8.54 (s, 1H), 8.26 (s, 1H), 8.14 (s, 1H), 7.28 (d, J=8.0 Hz, 2H), 7.04 (d, J=8.0 Hz, 2H), 4.01-4.00 (m, 2H), 3.86-3.67 (m, 3H), 3.67-3.42 (m, 2H), 3.34-2.53 (m, 1H), 2.52-2.50 (m, 2H); LCMS: Rt=0.69 min, m/z=399.1 [M+H]; SFC: Rt=2.73 min (peak 1), e.e. value 100%.
SFC peak 2: 5-(4-((1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (238): separation. 1H NMR (400 MHz, DMSO-d6) δ 13.65 (br. s, 1H), 8.49 (br. s, 1H), 8.27 (s, 1H), 8.17 (br. s, 1H), 7.28 (d, J=8.0 Hz, 2H), 7.04 (d, J=8.0 Hz, 2H), 4.02-4.00 (m, 2H), 3.86-3.83 (m, 3H), 3.76-3.67 (m, 2H), 3.67-3.65 (m, 1H), 3.42-3.39 (m, 2H); LCMS: Rt=0.69 min, m/z=399.1 [M+H]; SFC: Rt=3.06 min (peak 2), e.e. value 100%.
5-(4-((1,4-dioxan-2-yl)methoxy)-3-fluorophenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (239) was made using a procedure similar to that used to make 5-(4-((1-acetylpiperidin-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (55), except 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenol was replaced with 2-fluoro-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenol, and 1-(4-(hydroxymethyl)piperidin-1-yl)ethan-1-one was replaced with (1,4-dioxan-2-yl)methanol. 1H NMR (400 MHz, DMSO-d6) δ 8.63 (s, 1H), 8.25 (s, 1H), 8.14-8.12 (m, 1H), 7.28-7.25 (m, 2H), 7.11 (d, J=8.8 Hz, 1H), 4.10 (d, J=4.8 Hz, 2H), 3.86-3.83 (m, 1H), 3.76-3.67 (m, 1H), 3.66-3.65 (m, 1H), 3.65-3.51 (m, 2H), 3.51-3.50 (m, 1H), 3.50-3.45 (m, 1H); LCMS: Rt=0.67 min, m/z=417.1 [M+H].
5-(4-((1,4-dioxan-2-yl)methoxy)-3-chlorophenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (240) was made using a procedure similar to that used to make 5-(4-((1-acetylpiperidin-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (55), except 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenol was replaced with 2-chloro-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenol, and 1-(4-(hydroxymethyl)piperidin-1-yl)ethan-1-one was replaced with (1,4-dioxan-2-yl)methanol. 1H NMR (400 MHz, DMSO-d6) δ 8.17 (br. s, 1H), 8.07 (br. s, 1H), 7.69-7.62 (m, 1H), 7.35 (s, 1H), 7.20 (s, 2H), 4.12-4.10 (m, 2H), 4.09-3.89 (m, 2H), 3.89-3.77 (m, 1H), 3.68-3.67 (m, 2H), 3.50-3.48 (m, 2H); LCMS: Rt=0.70 min, m/z=433.0 [M+H].
5-(4-((1,4-dioxan-2-yl)methoxy)-3-cyanophenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (241) was made using a procedure similar to that used to make 5-(4-((1-acetylpiperidin-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (55), except 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenol was replaced with 2-hydroxy-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzonitrile, and 1-(4-(hydroxymethyl)piperidin-1-yl)ethan-1-one was replaced with (1,4-dioxan-2-yl)methanol. 1H NMR (400 MHz, DMSO-d6) δ 13.73 (br.s, 1H), 8.50 (br.s, 1H), 8.29 (s, 1H), 8.17-7.78 (m, 1H), 7.77 (s, 1H), 7.65-7.63 (m, 1H), 7.38 (d, J=8.8 Hz, 1H), 4.25-4.23 (m, 2H), 4.23-4.22 (m, 1H), 3.89-3.86 (m, 2H), 3.78-3.69 (m, 2H), 3.51-3.48 (m, 2H); LCMS: Rt=0.65 min, m/z=424.0 [M+H].
5-(4-((1,4-dioxan-2-yl)methoxy)-3-methylphenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (242) was made using a procedure similar to that used to make 5-(4-((1-acetylpiperidin-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (55), except 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenol was replaced with 2-methyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenol, and 1-(4-(hydroxymethyl)piperidin-1-yl)ethan-1-one was replaced with (1,4-dioxan-2-yl)methanol. 1H NMR (400 MHz, DMSO-d6) δ 8.19 (s, 1H), 8.02 (br. s, 1H), 7.58 (br. s, 1H), 7.05 (m, 1H), 6.96 (d, J=8.2 Hz, 1H), 4.01 (m, 2H), 3.98 (m, 2H), 3.89 (m, 1H), 3.68 (m, 2H), 3.52 (m, 2H), 2.18 (s, 3H); LCMS: Rt=0.69 min, m/z=413.1 [M+H].
5-(4-((1,4-dioxan-2-yl)methoxy)-3-cyclopropylphenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (243) was made using a procedure similar to that used to make 5-(4-((1-acetylpiperidin-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (55), except 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenol was replaced with 2-cyclopropyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenol, and 1-(4-(hydroxymethyl)piperidin-1-yl)ethan-1-one was replaced with (1,4-dioxan-2-yl)methanol. 1H NMR (400 MHz, DMSO-d6) δ 8.16 (s, 1H), 7.95-8.09 (m, 1H), 7.60 (s, 1H), 6.93-7.04 (m, 2H), 6.70 (s, 1H), 3.86-4.10 (m, 4H), 3.77-3.82 (m, 1H), 3.63-3.75 (m, 2H), 3.42-3.50 (m, 3H), 2.34-2.37 (m, 1H), 2.09-2.20 (m, 1H), 0.86-0.95 (m, 2H), 0.58-0.67 (m, 2H). LCMS: Rt=0.73 min, m/z=439.1 [M+H].
5-(4-((1,4-dioxan-2-yl)methoxy)-3-methoxyphenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (244) was made using a procedure similar to that used to make 5-(4-((1-acetylpiperidin-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (55), except 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenol was replaced with 2-methoxy-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenol, and 1-(4-(hydroxymethyl)piperidin-1-yl)ethan-1-one was replaced with (1,4-dioxan-2-yl)methanol. 1H NMR (400 MHz, DMSO-d6) δ 9.30 (br. s, 1H), 8.20 (br. s, 1H), 8.11 (br. s, 1H), 7.75 (br. s, 1H), 7.01 (d, J=8.0 Hz, 1H), 6.89 (br. s, 1H), 6.79 (d, J=7.6 Hz, 1H), 4.00-3.96 (m, 2H), 3.86 (d, J=12.0 Hz, 2H), 3.77 (s, 3H), 3.66-3.64 (m, 2H), 3.51-3.43 (m, 1H), 3.41-3.38 (m, 2H); LCMS: Rt=0.65 min, m/z=429.1 [M+H].
5-(4-((1,4-dioxan-2-yl)methoxy)-2-fluorophenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (245) was made using a procedure similar to that used to make 5-(4-((1-acetylpiperidin-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (55), except 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenol was replaced with 3-fluoro-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenol, and 1-(4-(hydroxymethyl)piperidin-1-yl)ethan-1-one was replaced with (1,4-dioxan-2-yl)methanol. 1H NMR (400 MHz, DMSO-d6) δ 9.06 (br. s, 1H), 8.16 (s, 1H), 8.11 (br. s, 1H), 7.28-7.21 (m, 1H), 6.97-6.93 (m, 1H), 6.88-6.86 (m, 1H), 4.04-4.00 (m, 2H), 3.85-3.76 (m, 3H), 3.69-3.65 (m, 2H), 3.64 (m, 1H), 3.43 (m, 1H); LCMS: Rt=0.67 min, m/z=417.1 [M+H].
5-(4-(morpholin-3-ylmethoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (246) was made using a procedure similar to that used to make 5-(4-((1-acetylpiperidin-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (55), except 1-(4-(hydroxymethyl)piperidin-1-yl)ethan-1-one was replaced with morpholin-3-ylmethanol. 1H NMR (400 MHz, DMSO-d6) δ 9.09 (br. s, 1H), 8.19 (s, 1H), 8.14 (s, 1H), 7.84 (s, 1H), 7.21 (d, J=8.4 Hz, 2H), 7.02 (d, J=8.4 Hz, 2H), 4.53 (m, 1H), 4.26 (t, J=10.0 Hz, 1H), 3.83 (d, J=9.4 Hz, 2H), 3.72 (d, J=11.2 Hz, 2H), 3.59 (s, 2H), 3.05-3.00 (m, 2H); LCMS: Rt 0.63 min, m/z 398.0 [M+H].
5-(4-((4-methylmorpholin-3-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (247) was made using a procedure similar to that used to make 5-(4-((1-acetylpiperidin-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (55), except 1-(4-(hydroxymethyl)piperidin-1-yl)ethan-1-one was replaced with (4-methylmorpholin-3-yl)methanol. 1H NMR (400 MHz, DMSO-d6) δ 8.73 (s, 1H), 8.21 (s, 1H), 8.15 (s, 1H), 8.03 (s, 1H), 7.25 (d, J=8.6 Hz, 2H), 7.03 (d, J=8.6 Hz, 2H), 4.17 (m, 1H), 3.95 (m, 2H), 3.88 (m, 2H), 3.77-3.69 (m, 1H), 2.77-2.64 (m, 2H), 2.34 (s, 3H), 2.31-2.26 (m, 1H); LCMS: Rt=0.53 min, m/z=412.1 [M+H].
5-(4-((4-cyclopropylmorpholin-3-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (248) was obtained using a procedure similar to that used to make 5-(4-((4-(cyclopropylmethyl)morpholin-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (194), except 2-((4-bromophenoxy)methyl)-4-(cyclopropylmethyl)morpholine was replaced with 3-((4-bromophenoxy)methyl)-4-cyclopropylmorpholine. 1H NMR (400 MHz, DMSO) δ 8.33 (s, 1H), 7.34 (d, J=8.8 Hz, 2H), 7.12 (d, J=8.8 Hz, 2H), 4.75-4.64 (m, 1H), 4.34 (dd, J=2.0, 11.0 Hz, 1H), 4.18 (dd, J=2.6, 12.6 Hz, 1H), 4.07 (br d, J=12.8 Hz, 1H), 3.96-3.78 (m, 2H), 3.74 (s, 1H), 3.51 (br d, J=12.8 Hz, 1H), 3.03-2.86 (m, 1H), 2.84-2.68 (m, 1H), 1.04-0.79 (m, 4H). LCMS: Rt=0.55 min, m/z=438.2 (M+H).
2-((4-bromophenoxy)methyl)-4-(cyclopropylmethyl)morpholine was obtained using a method similar to that used to make 2-((4-bromophenoxy)methyl)-4-(cyclopropylmethyl)morpholine except cyclopropanone was used in the alkylation step.
5-(4-((4-ethylmorpholin-3-ylmethoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (249) was obtained using a procedure similar to that used to make 5-(4-((4-(cyclopropylmethyl)morpholin-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (194), except 2-((4-bromophenoxy)methyl)-4-(cyclopropylmethyl)morpholine was replaced with 3-((4-bromophenoxy)methyl)-4-ethylmorpholine. 1H NMR (400 MHz, DMSO) δ=8.80 (br, s, 1H), 8.20 (s, 1H), 7.99 (br, s, 1H), 7.26 (d, J=8.6 Hz, 2H), 7.04 (d, J=8.6 Hz, 2H), 4.19 (m, 2H), 3.80 (m, 1H), 3.68 (m, 1H), 3.51 (m, 3H), 2.81 (m, 3H), 2.49 (m, 1H), 1.02 (t, J=7.2 Hz, 3H). LCMS: Rt=0.72 min, m/z=426.4 (M+H).
3-((4-bromophenoxy)methyl)-4-ethylmorpholine was obtained using a method similar to that used to make 2-((4-bromophenoxy)methyl)-4-(cyclopropylmethyl)morpholine except acetaldehyde was used in the alkylation step.
2-oxo-5-(4-((5-oxomorpholin-3-yl)methoxy)phenyl)-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (250) was made using a procedure similar to that used to make 5-(4-((1-acetylpiperidin-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (55), except 1-(4-(hydroxymethyl)piperidin-1-yl)ethan-1-one was replaced with 5-(hydroxymethyl)morpholin-3-one. 1H NMR (400 MHz, DMSO-d6) δ 8.80-8.53 (m, 1H), 8.32-8.17 (m, 2H), 8.07 (s, 1H), 7.28 (d, J=8.4 Hz, 2H), 7.06 (d, J=8.4 Hz, 2H), 4.11-3.98 (m, 4H), 3.88-3.82 (m, 2H), 3.74 (d, J=3.4 Hz, 1H); LCMS: Rt=0.65 min, m/z=412.0 [M+H].
5-(4-((4-methyl-5-oxomorpholin-3-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (251) was made using a procedure similar to that used to make 5-(4-((1-acetylpiperidin-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (55), except 1-(4-(hydroxymethyl)piperidin-1-yl)ethan-1-one was replaced with 5-(hydroxymethyl)-4-methylmorpholin-3-one. 1H NMR: (400 MHz, DMSO-d6) δ 8.20 (s, 1H), 8.00 (s, 1H), 7.63-7.39 (m, 1H), 7.20 (d, J=8.4 Hz, 2H), 7.03 (d, J=8.6 Hz, 2H), 4.27-4.14 (m, 2H), 4.08 (d, J=4.6 Hz, 2H), 4.01 (d, J=12.0 Hz, 1H), 3.87 (d, J=12.0 Hz, 1H), 3.74 (d, J=5.0 Hz, 1H), 3.00 (s, 3H); LCMS: Rt=0.68 min, m/z=426.2 [M+H].
5-(4-((1-(methylsulfonyl)cyclopropyl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (252) was made using a procedure similar to that used to make 5-(4-((1-acetylpiperidin-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (55), except 1-(4-(hydroxymethyl)piperidin-1-yl)ethan-1-one was replaced with (1-(methylsulfonyl)cyclopropyl)methanol. 1H NMR (400 MHz, DMSO-d6) δ: 7.95 (s, 1H), 7.40 (d, J=4.4 Hz, 1H), 7.48-7.32 (m, 1H), 7.20 (d, J=8.6 Hz, 2H), 7.01 (d, J=8.8 Hz, 2H), 4.37-4.31 (m, 2H), 3.15 (s, 3H), 1.47-1.39 (m, 2H), 1.27-1.21 (m, 2H); LCMS: Rt=0.72 min, m/z=431.1 [M+H].
5-(4-((1-(cyclopropylsulfonyl)cyclopropyl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (253) was made using a procedure similar to that used to make 5-(4-((1-acetylpiperidin-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (55), except 1-(4-(hydroxymethyl)piperidin-1-yl)ethan-1-one was replaced with (1-(cyclopropylsulfonyl)cyclopropyl)methanol. 1H NMR: (400 MHz, DMSO-d6), δ: 13.82-13.47 (m, 1H), 8.75-8.41 (m, 1H), 8.26 (s, 1H), 8.18-8.04 (m, 1H), 7.29 (d, J=8.4 Hz, 2H), 7.08 (d, J=8.6 Hz, 2H), 4.36 (s, 2H), 2.91-2.81 (m, 1H), 1.48-1.38 (m, 2H), 1.29-1.22 (m, 2H), 1.13-0.95 (m, 4H); LCMS: Rt=0.69 min, m/z=457.1 [M+H].
5-(4-(2-methoxyethoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (254) was made using a procedure similar to that used to make 5-(4-((1-acetylpiperidin-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (55), except 1-(4-(hydroxymethyl)piperidin-1-yl)ethan-1-one was replaced with 2-methoxyethan-1-ol. LCMS: Rt=0.72 min, m/z=357.3 [M+H].
5-(4-(2-hydroxyethoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (255) was made using a procedure similar to that used to make 5-(4-((1-acetylpiperidin-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (55), except 1-(4-(hydroxymethyl)piperidin-1-yl)ethan-1-one was replaced with ethane-1,2-diol. 1H NMR (500 MHz, DMSO-d6) δ 13.64 (br. s, 1H), 8.47 (br. s, 1H), 8.26 (s, 1H), 8.15 (br. s, 1H), 7.26 (d, J=8.2 Hz, 2H), 7.02 (d, J=8.2 Hz, 2H), 4.89 (t, J=5.5 Hz, 1H), 4.03 (t, J=4.9 Hz, 2H), 3.74 (q, J=5.1 Hz, 2H). LCMS: Rt=1.84 min, m/z=343.1 [M+H].
5-(4-(2-(methylsulfonyl)ethoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (256) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 1-chloro-2-(methylsulfonyl)ethane. 1H NMR (500 MHz, DMSO-d6) δ 13.64 (br. s, 1H), 8.46 (br. s, 1H), 8.28 (s, 1H), 8.17 (br. s, 1H), 7.40-7.20 (m, 2H), 7.12-7.01 (m, 2H), 4.40 (t, J=5.6 Hz, 2H), 3.65 (t, J=5.6 Hz, 2H), 3.10 (s, 3H). LCMS: Rt=0.62 min, m/z=405.3 [M+H].
2-oxo-5-(4-(2-(2-oxooxazolidin-3-yl)ethoxy)phenyl)-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (257) was made using a procedure similar to that used to make 5-(4-((1-acetylpiperidin-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (55), except 1-(4-(hydroxymethyl)piperidin-1-yl)ethan-1-one was replaced with 3-(2-hydroxyethyl)oxazolidin-2-one. 1H NMR (400 MHz, DMSO-d6) δ 8.53 (br.s, 1H), 8.26 (s, 1H), 8.14 (d, J=3.6 Hz, 1H), 7.29 (d, J=8.8 Hz, 2H), 7.06 (d, J=8.8 Hz, 2H), 4.29-4.19 (m, 2H), 4.18-4.17 (m, 2H), 3.69-3.65 (m, 2H), 3.58-3.55 (m, 2H); LCMS: Rt=0.62 min, m/z=412.1 [M+H].
5-(4-(2-(1H-imidazol-1-yl)ethoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (258) was made using a procedure similar to that used to make 5-(4-((3-nitrobenzyl)oxy)phenyl)-2-oxo-6-(trifluoromethyl-1,2-dihydropyridine-3-carboxamide (54), except 1-(bromomethyl)-3-nitrobenzene was replaced with 1-(2-bromoethyl)-1H-imidazole. LCMS: Rt=0.83 min, m/z=393.3 [M+H].
5-(4-(2-morpholinoethoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (259) was made using a procedure similar to that used to make 5-(4-((1-acetylpiperidin-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (55), except 1-(4-(hydroxymethyl)piperidin-1-yl)ethan-1-one was replaced with 2-morpholinoethan-1-ol. LCMS: Rt=0.50 min, m/z=412.4 [M+H].
−(4-(2-hydroxy-3-morpholinopropoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (260) was made using a procedure similar to that used to make 5-(4-((1-acetylpiperidin-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (55), except 1-(4-(hydroxymethyl)piperidin-1-yl)ethan-1-one was replaced with 3-morpholinopropane-1,2-diol. LCMS: Rt=0.60 min, m/z=442.3 [M+H].
5-(4-((1,3-dimethyl-1H-pyrazol-5-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide was made using a procedure similar to steps 2 and 3 in the procedure used to make 2-oxo-5-(4-((tetrahydro-2H-pyran-4-yl)methyl)phenyl)-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (52), except 4-(4-bromobenzylidene)tetrahydro-2H-pyran was replaced with 5-((4-bromophenoxy)methyl)-1,3-dimethyl-1H-pyrazole. 1H NMR: (400 MHz, DMSO-d6) δ=9.55 (br s, 1H), 8.05 (s, 1H), 7.60 (br s, 1H), 7.23 (d, J=8.4 Hz, 2H), 7.08 (d, J=8.4 Hz, 2H), 6.17 (s, 1H), 5.14 (s, 2H), 3.76 (s, 3H), 2.13 (s, 3H). LCMS: Rt=0.73 min, m/z=407.0 (M+H).
To a solution of (1,3-dimethyl-1H-pyrazol-5-yl)methanol (0.5 g, 3.94 mmol), 4-bromophenol (0.75 g, 4.33 mmol), Bu3P (1.59 g, 7.88 mmol) in THF (10 mL) was added DBAD (1.59 g, 7.88 mmol) at 0° C. Then the mixture was stirred at 25° C. for 12 hrs. This reaction mixture was concentrated and the residue was purified by column (PE/EA=5/1 to 1/1) to give 5-((4-bromophenoxy)methyl)-1,3-dimethyl-1H-pyrazole. LCMS: Rt=0.83 min, m/z=281.0, 282.9 (M+H).
5-(4-((3-ethyl-1-methyl-1H-pyrazol-5-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (262) was made using a procedure similar to steps 2 and 3 in the procedure used to make 2-oxo-5-(4-((tetrahydro-2H-pyran-4-yl)methyl)phenyl)-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (52), except 4-(4-bromobenzylidene)tetrahydro-2H-pyran was replaced with 5-((4-bromophenoxy)methyl)-3-ethyl-1-methyl-1H-pyrazole. 1H NMR (400 MHz, MeOD-d4) δ=8.29 (s, 1H), 7.28 (d, J=8.8 Hz, 2H), 7.11 (d, J=8.8 Hz, 2H), 6.22 (s, 1H), 5.14 (s, 2H), 3.84 (s, 3H), 2.60-2.57 (m, 2H), 1.24 (m, 3H). 19F NMR (377 MHz, MeOD-d4) δ=−62.75 (br s, 3F). LCMS: Rt=0.77 min, m/z=421.0 (M+H).
5-((4-bromophenoxy)methyl)-3-ethyl-1-methyl-1H-pyrazole was obtained using the method for the synthesis of 5-((4-bromophenoxy)methyl)-1,3-dimethyl-1H-pyrazole except (1,3-dimethyl-1H-pyrazol-5-yl)methanol was replaced with (3-ethyl-1-methyl-1H-pyrazol-5-yl)methanol.
5-(4-((3-cyclopropyl-1-methyl-1H-pyrazol-5-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (263) was made using a procedure similar to steps 2 and 3 in the procedure used to make 2-oxo-5-(4-((tetrahydro-2H-pyran-4-yl)methyl)phenyl)-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (52), except 4-(4-bromobenzylidene)tetrahydro-2H-pyran was replaced with 5-((4-bromophenoxy)methyl)-3-cyclopropyl-1-methyl-1H-pyrazole. 1H NMR: (400 MHz, CDCl3) δ=13.82-13.48 (m, 1H), 8.48 (s, 1H), 8.29 (s, 1H), 8.18 (s, 1H), 7.30 (d, J=8.6 Hz, 2H), 7.12 (d, J=8.8 Hz, 2H), 6.11 (s, 1H), 5.14 (s, 2H), 3.75 (s, 3H), 1.89-1.75 (m, 1H), 0.89-0.76 (m, 2H), 0.65-0.54 (m, 2H). LCMS: Rt=0.72 min, m/z=433.1 (M+H).
5-((4-bromophenoxy)methyl)-3-cyclopropyl-1-methyl-1H-pyrazole was obtained using the method for the synthesis of 5-((4-bromophenoxy)methyl)-1,3-dimethyl-1H-pyrazole except (1,3-dimethyl-1H-pyrazol-5-yl)methanol was replaced with (3-cyclopropyl-1-methyl-1H-pyrazol-5-yl)methanol.
2-oxo-6-(trifluoromethyl)-5-(4-((1,3,4-trimethyl-1H-pyrazol-5-yl)methoxy)phenyl)-1,2-dihydropyridine-3-carboxamide (264) was made using a procedure similar to steps 2 and 3 in the procedure used to make 2-oxo-5-(4-((tetrahydro-2H-pyran-4-yl)methyl)phenyl)-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (52), except 4-(4-bromobenzylidene)tetrahydro-2H-pyran was replaced with 5-((4-bromophenoxy)methyl)-1,3,4-trimethyl-1H-pyrazole. 1H NMR (400 MHz, MeOD-d4) δ=8.29 (br s, 1H), 7.29 (d, J=8.0 Hz, 5 2H), 7.10 (d, J=8.0 Hz, 2H), 5.09 (s, 2H), 3.80 (s, 3H), 2.15 (s, 3H), 2.02 (s, 3H). 19F NMR (377 MHz, MeOD—−62.72 (br s, 3F). LCMS: Rt=0.75 min, m/z=420.9 (M+H).
5-((4-bromophenoxy)methyl)-1,3,4-trimethyl-1H-pyrazole was obtained using the method for the synthesis of 5-((4-bromophenoxy)methyl)-1,3-dimethyl-1H-pyrazole except (1,3-dimethyl-1H-pyrazol-5-yl)methanol was replaced with (1,3,4-trimethyl-1H-pyrazol-5-yl)methanol.
5-(4-((1-(cyclopropylmethyl)-1H-pyrazol-5-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (265) was made using a procedure similar to steps 2 and 3 in the procedure used to make 2-oxo-5-(4-((tetrahydro-2H-pyran-4-yl)methyl)phenyl)-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (52), except 4-(4-bromobenzylidene)tetrahydro-2H-pyran was replaced with 5-((4-bromophenoxy)methyl)-1-(cyclopropylmethyl)-1H-pyrazole. 1H NMR: (400 MHz, MeOD-d4) δ=8.29 (s, 1H), 7.47 (s, 1H), 7.29 (d, J=8.4 Hz, 2H), 7.11 (d, J=8.8 Hz, 2H), 6.43 (s, 1H), 5.21 (s, 2H), 4.09 (d, J=6.8 Hz, 2H), 1.37 (m, 1H), 0.57 (m, 2H), 0.43 (m, 2H). 19F NMR: (377 MHz, MeOD-d4) δ=−62.74 (br s, 3F). LCMS: Rt=0.78 min, m/z=433.0 (M+H).
5-((4-bromophenoxy)methyl)-1-(cyclopropylmethyl)-1H-pyrazole was obtained using the method for the synthesis of 5-((4-bromophenoxy)methyl)-1,3-dimethyl-1H-pyrazole except (1,3-dimethyl-1H-pyrazol-5-yl)methanol was replaced with (1-(cyclopropylmethyl)-1H-pyrazol-5-yl)methanol.
5-(4-(oxazol-4-ylmethoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (266) was made using a procedure similar to steps 2 and 3 in the procedure used to make 2-oxo-5-(4-((tetrahydro-2H-pyran-4-yl)methyl)phenyl)-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (52), except 4-(4-bromobenzylidene)tetrahydro-2H-pyran was replaced with 4-((4-bromophenoxy)methyl)oxazole. 1H NMR (400 MHz, DMSO-d6) δ=8.70 (br s, 1H), 8.41 (s, 1H), 8.24 (d, J=4.4 Hz, 2H), 8.04 (br s, 1H), 7.27 (d, J=8.8 Hz, 2H), 7.11 (d, J=8.8 Hz, 2H). 19F NMR (376 MHz, DMSO-d6) δ=−80.40 (br s, 3F). LCMS: Rt=0.79 min, m/z=380.2 (M+H).
5-(4-(oxazol-5-ylmethoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (267) was made using a procedure similar to steps 2 and 3 in the procedure used to make 2-oxo-5-(4-((tetrahydro-2H-pyran-4-yl)methyl)phenyl)-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (52), except 4-(4-bromobenzylidene)tetrahydro-2H-pyran was replaced with 5-(bromomethyl)oxazole. 1H NMR (400 MHz, DMSO-d6) δ=8.70 (s, 1H), 8.43 (s, 1H), 8.23 (s, 1H), 8.15 (s, 1H), 8.05 (s, 1H), 7.36 (s, 1H), 7.28 (d, J=8.6 Hz, 2H), 7.12 (d, J=8.7 Hz, 2H), 5.24 (s, 2H), 1.18 (d, J=13.7 Hz, 1H). 19F NMR (376 MHz, DMSO-d6) δ=−80.41 (s, 3F). LCMS: Rt=0.79 min, m/z=380.1 (M+H).
5-(4-((5-cyclopropylisoxazol-3-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (268) was made using a procedure similar to steps 2 and 3 in the procedure used to make 2-oxo-5-(4-((tetrahydro-2H-pyran-4-yl)methyl)phenyl)-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (52), except 4-(4-bromobenzylidene)tetrahydro-2H-pyran was replaced with 3-(bromomethyl)-5-cyclopropylisoxazole. 1H NMR (400 MHz, DMSO-d6) δ=9.42 (br s, 1H), 8.18 (s, 1H), 8.06 (m, 1H), 7.66 (m, 1H), 7.24 (br d, J=8.8 Hz, 2H), 7.07 (d, J=8.4 Hz, 2H), 6.33 (s, 1H), 5.15 (s, 2H), 2.18 (m, 1H), 1.09 (m, 2H), 0.91 (m, 2H). LCMS: Rt=0.77 min, m/z=420.1 (M+H).
5-(4-((5-methylisoxazol-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (269) was made using a procedure similar to steps 2 and 3 in the procedure used to make 2-oxo-5-(4-((tetrahydro-2H-pyran-4-yl)methyl)phenyl)-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (52), except 4-(4-bromobenzylidene)tetrahydro-2H-pyran was replaced with 4-(bromomethyl)-5-methylisoxazole. 1H NMR (400 MHz, DMSO-d6) δ=9.35 (br s, 1H), 8.62 (s, 1H), 8.22 (m, 1H), 8.08 (br s, 1H), 7.70 (br s, 1H), 7.23 (d, J=8.4 Hz, 2H), 7.06 (d, J=8.4 Hz, 2H), 4.99 (s, 2H), 5 2.47 (s, 3H). LCMS: Rt=0.72 min, m/z=394.3 (M+H).
5-(4-((5-methyl-3-(pyridin-4-yl)isoxazol-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (270) was made using a procedure similar to steps 2 and 3 in the procedure used to make 2-oxo-5-(4-((tetrahydro-2H-pyran-4-yl)methyl)phenyl)-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (52), except 4-(4-bromobenzylidene)tetrahydro-2H-pyran was replaced with 4-(bromomethyl)-5-methyl-3-(pyridin-4-yl)isoxazole. 1H NMR (400 MHz, DMSO-d6) δ=8.73 (d, J=6.0 Hz, 2H), 8.17 (s, 1H), 8.00 (br s, 1H), 7.72 (d, J=6.0 Hz, 2H), 7.22 (d, J=8.4 Hz, 2H), 7.05 (d, J=8.8 Hz, 2H), 5.09 (s, 2H), 2.56 (s, 3H). 19F NMR (376 MHz, DMSO-d6) δ=−60.29 (br s, 3F). LCMS: Rt=0.70 min, m/z=471.1 (M+H).
5-(4-((2-methylthiazol-5-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (271) was made using a procedure similar to steps 2 and 3 in the procedure used to make 2-oxo-5-(4-((tetrahydro-2H-pyran-4-yl)methyl)phenyl)-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (52), except 4-(4-bromobenzylidene)tetrahydro-2H-pyran was replaced with 5-(bromomethyl)-2-methylthiazole. 1H NMR (400 MHz, DMSO-d6) δ=10.34 (br s, 1H), 7.89 (s, 1H), 7.73 (s, 1H), 7.21 (br s, 1H), 7.17 (d, J=8.4 Hz, 2H), 7.06-6.99 (m, 2H), 5.32 (s, 2H), 2.70-2.63 (m, 3H). 19F NMR (376 MHz, DMSO-d6) δ=−60.33 (br s, 3F). LCMS: Rt=0.73 min, m/z=410.2 (M+H).
5-(4-((4-methylthiazol-5-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (272) was made using a procedure similar to steps 2 and 3 in the procedure used to make 2-oxo-5-(4-((tetrahydro-2H-pyran-4-yl)methyl)phenyl)-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (52), except 4-(4-bromobenzylidene)tetrahydro-2H-pyran was replaced with 5-(bromomethyl)-4-methylthiazole. 1H NMR (400 MHz, DMSO-d6) δ=9.00 (s, 1H), 8.10 (br s, 1H), 7.75 (br s, 1H), 7.24 (br d, J=8.4 Hz, 2H), 7.08 (br d, J=8.4 Hz, 2H), 5.33 (s, 2H), 2.43 (s, 3H). 19F NMR (377 MHz, DMSO-d6) δ=−60.35 (br s, 3F). LCMS: Rt=0.80 min, m/z=410.2 (M+H).
5-(4-((4-methyl-1,2,3-thiadiazol-5-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (273) was made using a procedure similar to steps 2 and 3 in the procedure used to make 2-oxo-5-(4-((tetrahydro-2H-pyran-4-yl)methyl)phenyl)-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (52), except 4-(4-bromobenzylidene)tetrahydro-2H-pyran was replaced with 5-(bromomethyl)-4-methyl-1,2,3-thiadiazole. 1H NMR (400 MHz, MeOD-d4) δ=8.34-8.23 (m, 1H), 7.31 (br d, J=7.9 Hz, 2H), 7.12 (br d, J=7.8 Hz, 2H), 5.53 (s, 2H), 2.74 (s, 3H); 19F NMR (377 MHz, MeOD-d4) δ=−62.76 (br s, 3F). LCMS: Rt=0.84 min, m/z=411.1 (M+H).
5-(4-((4-methylpyridin-3-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (274) was made using a procedure similar to steps 2 and 3 in the procedure used to make 2-oxo-5-(4-((tetrahydro-2H-pyran-4-yl)methyl)phenyl)-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (52), except 4-(4-bromobenzylidene)tetrahydro-2H-pyran was replaced with 3-(bromomethyl)-4-methylpyridine. 1H NMR (400 MHz, DMSO-d6) δ=9.06 (br s, 1H), 8.59 (s, 1H), 8.44 (d, J=5.2 Hz, 1H), 8.17 (s, 1H), 7.86 (br s, 1H), 7.29 (m, 2H), 7.26 (s, 1H), 7.14 (d, J=8.8 Hz, 2H), 5.20 (s, 2H), 2.50 (s, 3H); LCMS: Rt=0.58 min, m/z=404.1 (M+H).
5-(4-((4-cyclopropylpyridin-3-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (275) was made using a procedure similar to that used to make 5-(4-((1-acetylpiperidin-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (55), except 1-(4-(hydroxymethyl)piperidin-1-yl)ethan-1-one was replaced with (4-cyclopropylpyridin-3-yl)methanol. 1H NMR (400 MHz, DMSO-d6) δ=10.81 (br s, 1H), 8.56 (s, 1H), 8.42 (d, J=5.2 Hz, 1H), 7.80 (s, 1H), 7.17 (m, 2H), 7.07 (m, 2H), 7.01 (m, 1H), 6.94 (d, J=5.2 Hz, 1H), 5.27 (s, 2H), 2.32 (m, 1H), 1.09 (m, 2H), 0.83 (m, 2H). LCMS: Rt=0.61 min, m/z=430.1 (M+H).
Step 1: To a solution of methyl 4-chloronicotinate, (900 mg, 5.26 mmol) in THF (10 mL) and H2O (2 mL) was added potassium cyclopropyltrifluoroborate (818 mg, 5.53 mmol), Cs2CO3 (4.8 g, 14.73 mmol) and Pd(dppf)Cl2 (385 mg, 0.53 mmol) at 25° C. under N2. The mixture was stirred at 100° C. for 12 hrs. The mixture was filtered, concentrated and purified by column chromatography (PE/EA=3/1) to give methyl 4-cyclopropylnicotinate. 1H NMR (400 MHz, CDCl3) δ=9.01 (s, 1H), 8.55 (d, J=5.4 Hz, 1H), 6.83 (d, J=5.4 Hz, 1H), 3.97 (s, 3H), 2.96 (m, 1H), 1.23 (m, 2H), 0.87 (m, 2H)
Step 2: To a solution of methyl 4-cyclopropylnicotinate, (500 mg, 2.82 mmol) in THF (10 mL) was added LiAlH4 (107 mg, 2.82 mmol) at 10° C. The mixture was stirred 25° C. for 1 hr. Water (0.11 mL) was added to the mixture, followed by the addition of 15% aq. NaOH (0.11 mL), then followed by the addition of water (0.33 mL) and sodium sulfate (0.5 g). The mixture was stirred for 30 min. The mixture was filtered and the filtrate was washed with EA (20 mL×2). The combined organic layers were dried over anhydrous Na2SO4, filtered and concentrated to give (4-cyclopropylpyridin-3-yl)methanol. 1H NMR (400 MHz, CDCl3) δ=8.47 (s, 1H), 8.42 (m, 1H), 6.79 (d, J=5.0 Hz, 1H), 4.89 (s, 2H), 2.16 (m, 1H), 1.26 (m, 2H), 0.80 (m, 3H).
5-(4-((4-methoxypyridin-3-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (276) was made using a procedure similar to that used to make 5-(4-((1-acetylpiperidin-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (55), except 1-(4-(hydroxymethyl)piperidin-1-yl)ethan-1-one was replaced with (4-methoxypyridin-3-yl)methanol. 1H NMR (400 MHz, DMSO-d6) δ=9.09 (br s, 1H), 8.49 (m, 2H), 8.17 (s, 1H), 8.14 (s, 1H), 7.80 (br s, 1H), 7.25 (d, J=8.6 Hz, 2H), 7.14 (d, J=5.8 Hz, 1H), 7.09 (d, J=8.6 Hz, 2H), 5.11 (s, 2H), 3.91 (s, 3H). LCMS: Rt=0.58 min, m/z=420.1 (M+H).
5-(4-((4-ethoxypyridin-3-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (277) was made using a procedure similar to that used to make 5-(4-((1-acetylpiperidin-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (55), except 1-(4-(hydroxymethyl)piperidin-1-yl)ethan-1-one was replaced with (4-ethoxypyridin-3-yl)methanol. 1H NMR (400 MHz, DMSO-d6) δ=10.84 (s, 1H), 8.48 (s, 1H), 8.43 (d, J=4.0 Hz, 1H), 7.79 (s, 1H), 7.13 (d, J=8.0 Hz, 2H), 7.09 (d, J=4.0 Hz, 1H), 7.00 (d, J=8.0 Hz, 2H), 6.95 (s, 1H), 5.07 (s, 2H), 4.19 (m, 2H), 1.34 (t, J=4.0 Hz, 3H). LCMS: Rt=0.74 min, m/z=434.2 (M+H).
5-(4-((5-methylpyridin-3-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (278) was made using a procedure similar to that used to make 5-(4-((1-acetylpiperidin-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (55), except 1-(4-(hydroxymethyl)piperidin-1-yl)ethan-1-one was replaced with (5-methylpyridin-3-yl)methanol. 1H NMR (400 MHz, DMSO-d6) δ=10.34 (br s, 1H), 8.50 (d, J=0.9 Hz, 1H), 8.40 (s, 1H), 7.89 (br d, J=2.8 Hz, 1H), 7.72 (s, 1H), 7.23 (br s, 1H), 7.18 (br d, J=8.4 Hz, 2H), 7.04 (d, J=8.8 Hz, 2H), 2.50 (s, 3H). LCMS: Rt=0.620 min, m/z=404.0 (M+H).
5-(4-((5-cyclopropylpyridin-3-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (279) was made using a procedure similar to that used to make 5-(4-((1-acetylpiperidin-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (55), except 1-(4-(hydroxymethyl)piperidin-1-yl)ethan-1-one was replaced with (5-cyclopropylpyridin-3-yl)methanol. 1H NMR (400 MHz, DMSO-d6) δ=10.04 (m, 1H), 8.45 (d, J=1.6 Hz, 1H), 8.37 (m, 1H), 8.18 (br s, 1H), 10 7.93 (br s, 1H), 7.52 (s, 1H), 7.37 (m, 1H), 7.19 (br d, J=8.0 Hz, 2H), 7.04 (br d, J=8.4 Hz, 2H), 5.11 (s, 2H), 2.32 (m, 1H), 1.02 (m, 2H), 0.99 (m, 2H). LCMS: Rt=0.62 min, m/z=430.1 (M+H).
Pd(dppf)Cl2 (434 mg, 0.532 mmol) was added to a solution of (5-bromopyridin-3-yl)methanol (1.0 g, 5.32 mmol, potassium cyclopropyltrifluoroborate (1.57 g, 10.64 mmol) and Cs2CO3 (4.85 g, 14.896 mmol) in 10:1 THF/H2O (22 mL) at 25° C. under N2 and the mixture was stirred at 100° C. for 12 hrs. The mixture was purified by column (PE-PE/EA=1:1) directly to give (5-cyclopropylpyridin-3-yl)methanol. 1H NMR (400 MHz, CDCl3) δ 8.31 (m, 2H), 7.35 (br s, 1H), 4.72 (s, 2H), 1.89 (m, 1H), 1.03 (m, 3H), 0.73 (m, 3H).
5-(4-((4-isopropoxypyridin-3-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (280) was made using a procedure similar to that used to make 5-(4-((1-acetylpiperidin-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (55), except 1-(4-(hydroxymethyl)piperidin-1-yl)ethan-1-one was replaced with (4-isopropoxypyridin-3-yl)methanol. 1H NMR (400 MHz, DMSO-d6) δ=8.59-8.46 (m, 2H), 8.42 (s, 1H), 8.27 (s, 1H), 8.14 (s, 1H), 7.28 (d, J=8.0 Hz, 2H), 7.14 (s, 1H), 7.10 (d, J=8.0 Hz, 2H), 5.10 (s, 2H), 4.82 (m, 1H), 1.29 (d, J=6.0 Hz, 6H). LCMS: Rt=0.67 min, m/z=448.1 (M+H).
5-(4-((4-methylpyrimidin-5-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (281) was made using a procedure similar to that used to make 5-(4-((1-acetylpiperidin-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (55), except 1-(4-(hydroxymethyl)piperidin-1-yl)ethan-1-one was replaced with (4-methylpyrimidin-5-yl)methanol. 1H NMR (500 MHz, DMSO-d6) δ=13.65 (s, 1H), 9.05 (s, 1H), 8.80 (s, 1H), 8.54 (br s, 1H), 8.29 (s, 1H), 8.16 (br s, 1H), 7.33 (d, J=8.7 Hz, 2H), 7.19 (d, J=8.8 Hz, 2H), 5.26 (s, 2H), 2.57 (s, 3H). LCMS: Rt=2.53 min, m/z=405.0 (M+H).
5-(4-((4-cyclopropylpyrimidin-5-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (282) was made using a procedure similar to that used to make 5-(4-((1-acetylpiperidin-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (55), except 1-(4-(hydroxymethyl)piperidin-1-yl)ethan-1-one was replaced with (4-cyclopropylpyrimidin-5-yl)methanol. 1H NMR: (500 MHz, DMSO-d6) δ=13.66 (s, 1H), 8.98 (s, 1H), 8.75 (s, 1H), 8.47 (s, 1H), 8.30 (s, 1H), 8.20 (s, 1H), 7.34 (d, J=8.6 Hz, 2H), 7.21 (d, J=8.7 Hz, 2H), 5.36 (s, 2H), 2.36-2.30 (m, 1H), 1.17-1.10 (m, 4H). LCMS: Rt=3.02 min, m/z=430.9 (M+H).
5-(4-((6-methylpyrazin-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (283) was made using a procedure similar to that used to make 5-(4-((1-acetylpiperidin-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (55), except 1-(4-(hydroxymethyl)piperidin-1-yl)ethan-1-one was replaced with (6-methylpyrazin-2-yl)methanol. 1H NMR (400 MHz, DMSO-d6) δ=8.85 (m, 1H), 8.62 (s, 1H), 8.54 (s, 1H), 8.23 (s, 1H), 8.14 (s, 1H), 8.03 (br s, 1H), 7.29 (d, J=8.8 Hz, 2H), 7.14 (d, J=8.8 Hz, 2H), 5.26 (s, 2H), 2.53 (s, 3H). 19F NMR (376 MHz, DMSO-d6) δ=−60.40 (br s, 3F). LCMS: Rt=0.81 min, m/z=443.2 (M+K).
5-(4-((6-cyclopropylpyrazin-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (284) was made using a procedure similar to that used to make 5-(4-((1-acetylpiperidin-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (55), except 1-(4-(hydroxymethyl)piperidin-1-yl)ethan-1-one was replaced with (6-cyclopropylpyrazin-2-yl)methanol. 1H NMR (400 MHz, MeOD-d4) δ=8.50 (s, 1H), 8.46 (s, 1H), 8.41 (s, 1H), 8.24 (br s, 1H), 7.27 (d, J=8.4 Hz, 2H), 7.10 (d, J=8.4 Hz, 2H), 5.22 (s, 2H), 2.23 (m, 1H), 1.10-1.08 (m, 4H); 19F NMR: (376 MHz, MeOD-d4) δ=−62.85 (br s, 3F). LCMS: Rt=0.80 min, m/z 431.0 (M+H).
To a solution of (6-chloropyrazin-2-yl)methanol (500 mg, 3.5 mmol) in dioxane/H2O (25 mL) was added cyclopropylboronic acid (360 mg, 4.2 mmol, Na2CO3 (1.11 g, 10.5 mmol), Pd(dppf)Cl2 (510 mg, 0.7 mmol) at 25° C. under N2, then stirred at 110° C. for 14 h. The reaction mixture was concentrated, then purified by Prep-HPLC (condition: FA) to give (6-cyclopropylpyrazin-2-yl)methanol. LCMS: Rt=0.30 min, m/z=151.1 (M+H); Rt=0.312 min, m/z=151.1 (M+H). 1H NMR (400 MHz, MeOD-d4) δ=8.40 (d, J=17.2 Hz, 2H), 4.66 (s, 2H), 2.13 (m, 1H), 1.04-1.02 (m, 4H).
5-(4-(imidazo[1,2-a]pyridin-2-ylmethoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (285) was made using a procedure similar to that used to make 5-(4-((1-acetylpiperidin-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (55), except 1-(4-(hydroxymethyl)piperidin-1-yl)ethan-1-one was replaced with imidazo[1,2-a]pyridin-2-ylmethanol. 1H NMR (400 MHz, DMSO-d6) δ=8.55 (d, J=6.8 Hz, 1H), 8.15-7.98 (m, 2H), 7.55 (d, J=9.0 Hz, 2H), 7.31-7.19 (m, 3H), 7.10 (d, J=8.7 Hz, 2H), 6.90 (t, J=6.8 Hz, 1H), 5.24 (s, 2H). LCMS: Rt=0.58 min, m/z=429.1 (M+H).
5-(4-(imidazo[1,2-a]pyridin-3-ylmethoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (286) was made using a procedure similar to that used to make 5-(4-((1-acetylpiperidin-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (55), except 1-(4-(hydroxymethyl)piperidin-1-yl)ethan-1-one was replaced with imidazo[1,2-a]pyridin-3-ylmethanol. 1H NMR (400 MHz, DMSO-d6) δ=8.98 (br s, 1H), 8.49 (d, J=6.8 Hz, 1H), 8.16 (s, 2H), 7.89 (br s, 1H), 7.78 (s, 1H), 7.64 (br d, J=9.0 Hz, 1H), 7.34 (m, 1H), 7.27 (d, J=8.4 Hz, 2H), 7.16 (br d, J=8.4 Hz, 2H), 7.02 (m, 1H), 5.54 (s, 2H). LCMS: Rt=0.73 min, m/z=429.2 (M+Na).
2-oxo-5-(4-((4,5,6,7-tetrahydrobenzo[d]isoxazol-3-yl)methoxy)phenyl)-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (287) was made using a procedure similar to that used to make 5-(4-((1-acetylpiperidin-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (55), except 1-(4-(hydroxymethyl)piperidin-1-yl)ethan-1-one was replaced with (4,5,6,7-tetrahydrobenzo[d]isoxazol-3-yl)methanol. 1H NMR (400 MHz, DMSO-d6) δ=8.56 (s, 1H), 8.26 (s, 1H), 8.20-8.04 (m, 1H), 7.29 (d, J=8.0 Hz, 2H), 7.11 (d, J=8.0 Hz, 2H), 5.21 (s, 2H), 2.69-2.66 (m, 2H), 2.47-2.40 (m, 2H), 1.86-1.74 (m, 2H), 1.74-1.65 (m, 2H). LCMS: Rt=0.83 min, m/z=434.1 (M+H).
5-(4-((2,3-dihydrobenzofuran-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (288) was made using a procedure similar to that used to make 5-(4-((1-acetylpiperidin-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (55), except 1-(4-(hydroxymethyl)piperidin-1-yl)ethan-1-one was replaced with (2,3-dihydrobenzofuran-2-yl)methanol. 1H NMR (400 MHz, DMSO-d6) δ 13.60 (m, 1H), 8.63 (m, 1H), 8.24 (s, 1H), 8.09 (br s, 1H), 7.27 (m, 3H), 7.07 (m, 3H), 6.83 (m, 2H), 5.16 (m, 1H), 4.25 (m, 2H), 3.40 (m, 1H), 5 3.11 (m, 1H). LCMS: Rt=0.80 min, m/z=431.3 (M+Na).
Parkins catalyst (5 mg, 0.05 mmol) was added to a solution of 5-(4-((1-methyl-1,4,5,7-tetrahydropyrano[3,4-c]pyrazol-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carbonitrile (95 mg, 0.22 mmol) in EtOH/H2O 9:1 (2 mL) at 25° C. and the mixture stirred at 70° C. for 4 hrs under N2. The mixture was filtered and concentrated and the residue purified by reversed-phase column (NH3—H2O) to give crude product. The crude product was purified by SFC to afford four individual isomers.
5-(4-((1-methyl-1,4,5,7-tetrahydropyrano[3,4-c]pyrazol-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (SFC peak 4) (289): 1H NMR: (400 MHz, DMSO-d6), δ=9.37 (br s, 1H), 8.10 (s, 1H), 7.74 (br s, 1H), 7.45 (s, 1H), 7.24 (d, J=8.4, 2H), 7.05 (d, J=8.8, 2H), 4.80 (m, 2H), 4.09 (m, 2H), 4.01 (m, 2H), 3.84 (m, 3H), 3.68 (m, 1H). LCMS: Rt=0.73 min, m/z=449.1 (M+H). Chiral HPLC: Rt=1.20 min, ee value=100%. Chiralpak AD-3 100×4.6 mm I.D
Step 1: 2H-pyran-3,5(4H,6H)-dione (14 g, 122.7 mmol) was added to DMF-DMA (49 mL) at 25° C. The mixture was stirred at 25° C. for 2 hrs. The reaction mixture was filtered to give a filter cake and the filter cake was washed with PE:EA=10:1 (100 mL) to give crude product. Then EtOAC (150 mL) was added to the crude product and the mixture was stirred for 10 min. The mixture was filtered, and the filtrate was concentrated in vacuo to give 4-((dimethylamino)methylene)-2H-pyran-3,5(4H,6H)-dione. TLC: (PE:EA=3:1, Rf=0.3). 1H NMR (400 MHz, DMSO-d6) δ=8.07 (s, 1H), 4.01 (s, 4H), 3.44 (s, 3H), 3.14 (s, 3H).
Step 2: To a solution of 4-((dimethylamino)methylene)-2H-pyran-3,5(4H,6H)-dione (10.5 g, 62.06 mmol), PMBNHNH2—HCl (14 g, 74.47 mmol) in EtOH (250 mL) was added Et3N (12.6 g, 124.12 mmol) and the mixture stirred at 80° C. for 4 hrs. The mixture was concentrated to give a residue which was subjected to silica gel chromotography (PE/EA=1/1) to give crude product. The crude product was washed with a solution of PE/EA (v/v=2:1, 200 mL) to give 1-(4-methoxybenzyl)-1,7-dihydropyrano[3,4-c]pyrazol-4(5H)-one. TLC:PE/EA=0/1, Rf=0.7. 1H NMR (400 MHz, DMSO-d6) δ=7.93 (s, 1H), 7.23-7.21 (m, 2H), 6.92-6.90 (m, 2H), 5.28 (s, 2H), 54.95-4.94 (m, 2H), 4.07 (s, 2H), 3.73 (s, 3H).
Step 3: To a solution under N2 of bromo(methyl)triphenylphosphorane (17.9 g, 50 mmol) in dry THF (80 mL) at 0° C. was added n-BuLi (2.5M, 20 ml, 50 mmol). The resulting yellow mixture was stirred for 0.5 hr at 0° C., then a solution of 1-(4-methoxybenzyl)-1,7-dihydropyrano[3,4-c]pyrazol-4(5H)-one (2.6 g, 10 mmol) in dry THF (20 mL) was added dropwise. The reaction was stirred at 15° C. for 3.5 hrs. The reaction was then quenched by the addition of H2O (500 mL) and extracted with EtOAc (3×200 mL). The combined organic layers were dried over Na2SO4, filtered, and concentrated in vacuo to give a residue which was purified by column chromatography (PE/EA=5/1) to give 1-(4-methoxybenzyl)-4-methylene-1,4,5,7-tetrahydropyrano[3,4-c]pyrazole. LCMS: Rt=0.76 min m/z=257.1 (M+H). 1H NMR (400 MHz, CDCl3) δ=7.68 (s, 1H), 7.27-7.08 (m, 2H), 6.88-6.85 (m, 2H), 5.15-5.14 (m, 3H), 4.82 (s, 1H), 4.56 (s, 2H), 4.21 (s, 2H), 3.79 (s, 3H).
Step 4: To a solution of 1-(4-methoxybenzyl)-4-methylene-1,4,5,7-tetrahydropyrano[3,4-c]pyrazole (1.3 g, 5.07 mmol) in THF (30 mL) was added BH3-Me2S (1.02 mL, 10.14 mmol, 10M) dropwise at 0° C. under N2. The mixture was stirred at 0° C. for 0.5 hour, then warmed to 20° C. and stirred at 20° C. for 15 hrs. Aq. NaOH (10.2 mL, 30.42 mmol, 3M) and H2O2 (10.2 mL, 30.42 mmol, 30% concentration) were added at 0° C. and the mixture stirred at 0° C. for 0.5 hour, followed by stirring at 20° C. for 42 hrs. K2CO3 (6 g) was added and the mixture was stirred for 2 hrs. Saturated Na2SO3 (aq. 200 mL) was added to the reaction solution sat 0° C. and the mixture was extracted with EtOAc (3×30 mL). The organic layers were combined and dried over Na2SO4, filtered and concentrated to give a residue which was purified by silica gel chromatography (PE-EA) to give (1-(4-methoxybenzyl)-1,4,5,7-tetrahydropyrano[3,4-c]pyrazol-4-yl)methanol. LCMS: Rt=0.63 min, m/z=275.1 (M+H). 1H NMR (400 MHz, CDCl3) δ=7.12 (s, 1H), 7.10-7.08 (m, 2H), 6.86-6.84 (m, 2H), 5.20-5.02 (m, 2H), 4.66-4.31 (m, 2H), 3.90-3.87 (m, 1H), 3.78-3.75 (m, 2H), 3.73-3.71 (m, 2H), 2.98 (s, 5H), 2.95-2.84 (m, 1H).
Step 5: To a solution of (1-(4-methoxybenzyl)-1,4,5,7-tetrahydropyrano[3,4-c]pyrazol-4-yl)methanol (580 mg, 2.11 mmol, DMAP (129 mg, 1.06 mmol) and Et3N (427 mg, 4.22 mmol) in DCM (10 mL) was added TosCl (605 mg, 3.17 mmol) at 0° C. and the mixture stirred for 15 min. The mixture was then stirred at 25° C. under N2 for 12.75 hrs. The crude was washed with water (10 mL) and extracted with DCM (2×20 mL). The organic layers were combined, dried, filtered and concentrated to give a residue which was purified by silica gel chromatography (PE-PE/EA=3/1) to give (1-(4-methoxybenzyl)-1,4,5,7-tetrahydropyrano[3,4-c]pyrazol-4-yl)methyl 4-methylbenzenesulfonate. TLC: PE/EA=1/1, Rf=0.5. LCMS: Rt=0.86 min, m/z=429.1 (M+H).
Step 6: To a solution of (1-(4-methoxybenzyl)-1,4,5,7-tetrahydropyrano[3,4-c]pyrazol-4-yl)methyl 4-methylbenzenesulfonate (500 mg, 1.11 mmol) in DMF (5 mL) was added 4-bromophenol (242 mg, 1.4 mmol) and Cs2CO3 (570 mg, 1.75 mmol) at 25° C. The mixture was stirred at 60° C. for 12 hrs. Water (5 mL) was added and the mixture was extracted with EtOAc (2×5 mL). The organic layers were combined and washed with brine, dried with anhydrous Na2SO4, filtered and concentrated in vacuum. The residue was purified by silica gel chromatography (PE-PE/EA=3/1) to give 4-((4-bromophenoxy)methyl)-1-(4-methoxybenzyl)-1,4,5,7-tetrahydropyrano[3,4-c]pyrazole. TLC: PE/EA=3/1, Rf=0.5. LCMS: Rt=0.93 min, m/z=429.0, 431.0 (M+H).
Step 7: To a solution of 4-((4-bromophenoxy)methyl)-1-(4-methoxybenzyl)-1,4,5,7-tetrahydropyrano[3,4-c]pyrazole (200 mg, 0.47 mmol) in dioxane (2 mL) was added TFA (1.36 g, 13.98 mmol) and trifluoromethanesulfonic acid (705 mg, 4.7 mmol) at 25° C. The mixture was stirred at 110° C. for 16 hrs. The mixture was washed with water (5 mL) and sat. NaHCO3 solution (5 mL) and extracted with EtOAc (2×5 mL). The organic layers were combined, dried with anhydrous Na2SO4, filtered and concentrated in vacuum. The residue was purified by reversed-phase column (FA) to give 4-((4-bromophenoxy)methyl)-1,4,5,7-tetrahydropyrano[3,4-c]pyrazole. LCMS: Rt=0.788 min, m/z=309.1, 311.2 (M+H). 1H NMR (400 MHz, CDCl3) δ=7.52 (s, 1H), 7.39-7.36 (m, 2H), 6.80 (d, J=8.8 Hz, 2H), 4.10-3.87 (m, 4H), 3.81-3.68 (m, 2H), 3.32-3.23 (m, 1H).
Step 8: To a solution of 4-((4-bromophenoxy)methyl)-1,4,5,7-tetrahydropyrano[3,4-c]pyrazole (100 mg, 0.32 mol) in THF (1 mL) was added t-BuOK (72 mg, 0.64 mmol) at 0° C. The mixture was stirred at 0° C. for 0.5 hour. Iodomethane (72 mg, 0.64 mmol) was added to the mixture at 0° C. and the mixture was stirred at 25° C. for 15.5 hrs. The mixture was diluted with water (5 mL) and extracted with EtOAc (2×5 mL). The organic layers were combined, dried with anhydrous Na2SO4, filtered and concentrated in vacuum. The residue was purified by reverse phase column (FA) to give 4-((4-bromophenoxy)methyl)-1-methyl-1,4,5,7-tetrahydropyrano[3,4-c]pyrazole. LCMS: Rt=0.82 min, m/z=323.0, 325.0 (M+H).
Step 9: Pd(dtbpf)Cl2 (10 mg, 0.02 mmol) was added to a solution of 4-((4-bromophenoxy)methyl)-1-methyl-1,4,5,7-tetrahydropyrano[3,4-c]pyrazole (63 mg, 0.19 mmol, 2-oxo-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-6-(trifluoromethyl)-1,2-dihydropyridine-3-carbonitrile (306 mg, 0.97 mmol) and K3PO4 (51 mg, 0.24 mmol) in dioxane/H2O=4/1 (2 mL) at 25° C. and the mixture stirred at 75° C. under N2 for 2 hrs. The reaction mixture was filtered and concentrated to dryness. The residue was purified by reversed-phase column (base) to give 5-(4-((1-methyl-1,4,5,7-tetrahydropyrano[3,4-c]pyrazol-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carbonitrile. LCMS: Rt=0.79 min, MS m/z 431.0 (M+H).
5-(4-((1-methyl-1,4,5,7-tetrahydropyrano[3,4-c]pyrazol-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (SFC peak 3) (290) was isolated from the crude mixture of Example 289. 1H NMR: (400 MHz, DMSO-d6), δ=8.34 (br, s, 1H), 8.18 (m, 1H), 7.94 (br, s, 1H), 7.43 (s, 1H), 7.25 (d, J=8.0 Hz, 2H), 7.05 (d, J=8.0 Hz, 2H), 4.79 (m, 2H), 4.08 (m, 2H), 4.02 (m, 2H), 3.82 (s, 3H), 3.16 (m, 1H). LCMS: Rt=0.73 min, m/z=449.3 (M+H). Chiral HPLC: Rt=3.24 min, ee value=93.3%.
5-(4-((2-methyl-2,4,5,7-tetrahydropyrano[3,4-c]pyrazol-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (SFC peak 1) (291) was isolated from the crude mixture of Example 289. 1H NMR: (400 MHz, DMSO-d6) δ=9.26 (br, s, 1H), 8.16 (m, 1H), 7.77 (br, s, 1H), 7.75 (s, 1H), 7.22 (d, J=8.0 Hz, 2H), 7.03 (d, J=8.0 Hz, 2H), 4.64 (m, 2H), 4.03 (m, 2H), 3.86 (m, 2H), 3.80 (s, 3H), 3.19 (m, 1H). LCMS: Rt=0.73 min, m/z=449.3 (M+H). Chiral HPLC: Rt=2.83 min, ee value=85.9%.
5-(4-((2-methyl-2,4,5,7-tetrahydropyrano[3,4-c]pyrazol-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (SFC peak 2) (292) was isolated from the crude mixture of Example 289. 1H NMR: (400 MHz, DMSO-d6) δ=8.75 (br, s, 1H), 8.21 (br, s, 1H), 8.03 (br, s, 1H), 7.65 (s, 1H), 7.26 (d, J=8.0 Hz, 2H), 7.07 (d, J=8.0 Hz, 2H), 4.64 (m, 2H), 4.04 (m, 2H), 3.88 (m, 2H), 3.79 (s, 3H), 3.21 (m, 1H). LCMS: Rt=0.73 min, m/z=449.3 (M+H). Chiral HPLC: Rt=2.94 min, ee value=83.8%.
5-(4-((1-isopropyl-1,4,5,7-tetrahydropyrano[3,4-c]pyrazol-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (SFC peak 3) (293) was obtained after SFC purification of the product obtained using the method described for the preparation of 5-(4-((1-methyl-1,4,5,7-tetrahydropyrano[3,4-c]pyrazol-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (SFC peak 4) (289), except 5-(4-((1-methyl-1,4,5,7-tetrahydropyrano[3,4-c]pyrazol-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carbonitrile was replaced with 5-(4-((1-isopropyl-1,4,5,7-tetrahydropyrano[3,4-c]pyrazol-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carbonitrile. 1H NMR: (400 MHz, DMSO-d6), δ=8.75-8.50 (m, 1H), 8.23 (s, 1H), 8.08 (br s, 1H), 7.45 (s, 1H), 7.26 (d, J=8.8 Hz, 2H), 7.07 (d, J=8.4 Hz, 2H), 4.78-4.73 (m, 2H), 4.34-4.24 (m, 1H), 4.14-4.06 (m, 1H), 4.00 (s, 1H), 3.83 (m, 2H), 3.21-3.09 (m, 1H), 1.36-1.32 (m, 6H). LCMS: Rt=0.75 min, m/z=477.3 (M+H). Chiral HPLC: Rt=2.46 min, ee value=100%.
5-(4-((1-isopropyl-1,4,5,7-tetrahydropyrano[3,4-c]pyrazol-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carbonitrile was obtained using the procedure for the preparation of 5-(4-((1-methyl-1,4,5,7-tetrahydropyrano[3,4-c]pyrazol-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carbonitrile, except iodomethane was replaced with 2-iodopropane.
5-(4-((1-isopropyl-1,4,5,7-tetrahydropyrano[3,4-c]pyrazol-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (SFC peak 4) (294) was isolated from the crude mixture of Example 293. 1H NMR: (400 MHz, DMSO-d6), δ=8.71 (brs, 1H), 8.21 (br s, 1H), 8.02 (br s, 1H), 7.45 (s, 1H), 7.25 (d, J=8.0 Hz, 2H), 7.06 (d, J=7.6 Hz, 2H), 4.86-4.67 (m, 2H), 4.34-4.22 (m, 1H), 4.15-4.06 (m, 1H), 4.05-3.95 (m, 1H), 3.90-3.76 (m, 2H), 3.21-3.08 (m, 1H), 1.36-1.32 (m, 6H). LCMS: Rt=0.76 min, m/z=477.3 (M+H). Chiral HPLC: Rt=3.22 min, ee value=89.5%.
5-(4-((2-isopropyl-2,4,5,7-tetrahydropyrano[3,4-c]pyrazol-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (SFC peak 1) (295) was isolated from the product in Example 293. 1H NMR: (400 MHz, DMSO-d6), δ=9.78-9.78 (m, 1H), 8.49 (d, J=15.6 Hz, 2H), 8.20 (s, 1H), 7.96 (s, 1H), 7.72 (d, J=8.2 Hz, 1H), 7.58 (m, 1H), 4.57 (m, 1H), 4.13 (m, 1H), 3.98-3.89 (m, 2H), 3.21-3.05 (m, 2H), 2.80-2.58 (m, 1H), 1.70 (m, 4H). LCMS: Rt=0.76 min, m/z=477.3 (M+H). Chiral HPLC: Rt=2.90 min, ee value=100%.
5-(4-((2-isopropyl-2,4,5,7-tetrahydropyrano[3,4-c]pyrazol-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (SFC peak 2) (296) as isolated from the product in Example 293. 1H NMR: (DMSO, 400 MHz), δ: 9.22 (br s, 1H), 8.11 (s, 1H), 7.76 (br s, 1H), 7.72 (s, 1H), 7.22 (d, J=8.8 Hz, 2H), 7.04 (d, J=8.8 Hz, 2H), 4.61 (s, 2H), 3.89-3.88 (m, 1H), 3.86-3.85 (m, 2H), 3.85-3.83 (m, 2H), 3.82-3.80 (m, 1H), 1.40-1.37 (m, 6H). LCMS: Rt=0.76 min, m/z=477.4 (M+H). Chiral HPLC: Rt=3.13 min, ee value=83%.
5-(4-(chroman-2-ylmethoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (297) was made using a procedure similar to that used to make 5-(4-((1-acetylpiperidin-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (55), except 1-(4-(hydroxymethyl)piperidin-1-yl)ethan-1-one was replaced with chroman-2-ylmethanol. 1H NMR: (400 MHz, DMSO-d6) δ=10.41 (s, 1H), 8.27 (s, 1H), 7.87 (d, J=0.9 Hz, 1H), 7.20-6.96 (m, 6H), 6.82 (d, J=13.1 Hz, 2H), 4.41 (d, J=2.9 Hz, 1H), 4.30-4.17 (m, 2H), 2.80 (s, 2H), 2.14-1.76 (m, 2H). LCMS: Rt=0.90 min, m/z=445.1 (M+H).
tert-butyl 3-((4-(5-carbamoyl-6-oxo-2-(trifluoromethyl)-1,6-dihydropyridin-3-yl)phenoxy)methyl)azetidine-1-carboxylate (298) was made using a procedure similar to that used to make 5-(4-((1-acetylpiperidin-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (55), except 1-(4-(hydroxymethyl)piperidin-1-yl)ethan-1-one was replaced with tert-butyl 3-(hydroxymethyl)azetidine-1-carboxylate. 1H NMR (400 MHz, DMSO-d6) δ=10.88 (br s, 1H), 7.77 (s, 1H), 7.13 (d, J=8.4 Hz, 2H), 6.96 (br d, J=7.6 Hz, 1H), 6.93 (d, J=8.8 Hz, 2H), 4.13 (d, J=6.8 Hz, 2H), 3.97 (br s, 5 2H), 3.69 (br s, 2H), 2.67 (m, 1H), 1.39 (s, 9H). LCMS: Rt=0.83 min, m/z=468.1 (M+H).
tert-butyl ((1r,3r)-3-((4-(5-carbamoyl-6-oxo-2-(trifluoromethyl)-1,6-dihydropyridin-3-yl)phenoxy)methyl)cyclobutyl)carbamate (299) was made using a procedure similar to that used to make 5-(4-((1-acetylpiperidin-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (55), except 1-(4-(hydroxymethyl)piperidin-1-yl)ethan-1-one was replaced with tert-butyl ((1r,3r)-3-(hydroxymethyl)cyclobutyl)carbamate. 1H NMR (400 MHz, DMSO-d6) δ=8.10 (br s, 1H), 7.81 (m, 1H), 7.21 (br d, J=8.4 Hz, 2H), 7.14 (br d, J=7.8 Hz, 1H), 6.97 (d, J=8.4 Hz, 2H), 3.93 (br d, J=5.0 Hz, 2H), 3.88 (m, 1H), 2.32 (m, 2H), 2.09 (s, 1H), 1.75 (br d, J=7.4 Hz, 2H), 1.37 (s, 9H). LCMS: Rt=0.78 min, m/z=482.4 (M+H).
(S)-5-(4-((5,5-dimethyltetrahydrofuran-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (300) was made using a procedure similar to that used to make 5-(4-((1-acetylpiperidin-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (55), except 1-(4-(hydroxymethyl)piperidin-1-yl)ethan-1-one was replaced with (5,5-dimethyltetrahydrofuran-2-yl)methanol. 1H NMR (400 MHz, DMSO-d6) δ=8.53 (br s, 1H), 8.27 (s, 1H), 8.15 (br s, 1H), 7.26 (br d, J=8.4 Hz, 2H), 7.03 (d, J=8.7 Hz, 2H), 4.10-3.79 (m, 4H), 3.77-3.61 (m, 2H), 3.42-3.23 (m, 2H), 3.08 (t, J=11.0 Hz, 1H), 2.54-2.47 (m, 5H), 1.03 (d, J=6.1 Hz, 3H). LCMS: Rt=0.73 min, m/z=413.1 (M+H). Chiral HPLC: Rt=2.11 min, de value=99.1%.
Tert-butyl 6-((4-(5-carbamoyl-6-oxo-2-(trifluoromethyl)-1,6-dihydropyridin-3-yl)phenoxy)methyl)-3-azabicyclo[3.1.0]hexane-3-carboxylate (301) was made using a procedure similar to that used to make 5-(4-((1-acetylpiperidin-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (55), except 1-(4-(hydroxymethyl)piperidin-1-yl)ethan-1-one was replaced with tert-butyl 6-(hydroxymethyl)-3-azabicyclo[3.1.0]hexane-3-carboxylate. 1H NMR (400 MHz, DMSO-d6) δ=9.53-8.93 (m, 1H), 8.10 (s, 1H), 7.76 (s, 1H), 7.20 (d, J=8.0 Hz, 2H), 6.97 (d, J=8.0 Hz, 2H), 4.09-3.97 (m, 1H), 3.91-3.78 (m, 1H), 3.44 (s, 5H), 1.81 (d, J=8.0 Hz, 2H), 1.43 (m, 1H), 1.29 (s, 9H). LCMS: Rt=0.80 min, m/z=438.1 (M-Bu).
Tert-butyl 3-((4-(5-carbamoyl-6-oxo-2-(trifluoromethyl)-1,6-dihydropyridin-3-yl)phenoxy)methyl)pyrrolidine-1-carboxylate (302) was made using a procedure similar to that used to make 5-(4-((1-acetylpiperidin-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (55), except 1-(4-(hydroxymethyl)piperidin-1-yl)ethan-1-one was replaced with tert-butyl 3-(hydroxymethyl)pyrrolidine-1-carboxylate. 1H NMR (400 MHz, MeOD-d4) δ=8.30 (s, 1H), 7.25 (d, J=8.4 Hz, 2H), 7.01 (d, J=8.7 Hz, 2H), 4.14-3.92 (m, 2H), 3.65-3.46 (m, 2H), 3.26-3.20 (m, 1H), 3.28-3.16 (m, 1H), 2.72 (br d, J=5.7 Hz, 1H), 2.12 (br s, 1H), 1.85 (br d, J=8.4 Hz, 1H), 1.47 (s, 9H); 19F NMR: (377 MHz, MeOD-d4) δ=−62.74 (br s, 3F). LCMS: Rt=0.92 min, m/z=504.3 (M+Na).
Tert-butyl 3-((4-(5-carbamoyl-6-oxo-2-(trifluoromethyl)-1,6-dihydropyridin-3-yl)phenoxy)methyl)-4-methylpyrrolidine-1-carboxylate (303) was made using a procedure similar to that used to make 5-(4-((1-acetylpiperidin-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (55), except 1-(4-(hydroxymethyl)piperidin-1-yl)ethan-1-one was replaced with tert-butyl 3-(hydroxymethyl)-4-methylpyrrolidine-1-carboxylate. 1H NMR (400 MHz, DMSO-d6) δ=8.11 (br s, 1H), 7.77 (br s, 1H), 7.22 (br d, J=8.4 Hz, 2H), 7.00 (br d, J=8.4 Hz, 2H), 4.10 (brdd, J=4.6, 9.3 Hz, 1H), 4.03-3.91 (m, 1H), 3.55 (br dd, J=7.3, 10.4 Hz, 2H), 3.18-3.05 (m, 1H), 2.85 (q, J=10.2 Hz, 1H), 2.28-2.02 (m, 3H), 1.40 (s, 10H), 1.12-1.02 (m, 3H). 19F NMR (376 MHz, DMSO-d6) δ=−59.31-−61.74 (m, 3F). LCMS: Rt=0.81 min, m/z=440.3 (M-Bu).
5-(4-((1-benzyl-3-cyanopyrrolidin-3-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (304) was made using a procedure similar to that used to make 5-(4-((1-acetylpiperidin-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (55), except 1-(4-(hydroxymethyl)piperidin-1-yl)ethan-1-one was replaced with 1-benzyl-3-(hydroxymethyl)pyrrolidine-3-carbonitrile. 1H NMR (400 MHz, DMSO-d6) δ=8.10 (br s, 1H), 7.72 (br s, 1H), 7.34 (m, 5H), 7.26 (m, 2H), 7.32 (m, 2H), 4.21 (m, 2H), 3.67 (m, 2H), 2.96 (m, 1H), 2.75 (m, 2H), 2.53 (m, 1H), 2.33 (m, 1H), 2.08 (m, 1H). LCMS: Rt=0.80 min, m/z=497.3 (M+H).
Tert-butyl (2S,4R)-2-((4-(5-carbamoyl-6-oxo-2-(trifluoromethyl)-1,6-dihydropyridin-3-yl)phenoxy)methyl)-4-fluoropyrrolidine-1-carboxylate (305) was made using a procedure similar to that used to make 5-(4-((1-acetylpiperidin-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (55), except 1-(4-(hydroxymethyl)piperidin-1-yl)ethan-1-one was replaced with tert-butyl 4-fluoro-2-(hydroxymethyl)pyrrolidine-1-carboxylate. 1H NMR (400 MHz, DMSO-d6) δ=9.27 (brs, 1H), 8.13 (s, 1H), 7.73 (br s, 1H), 7.22 (d, J=8.4 Hz, 2H), 7.01 (d, J=8.4 Hz, 2H), 5.25 (s, 1H), 4.22 (m, 3H), 3.74 (s, 1H), 3.40 (m, 2H), 2.34 (m, 1H), 1.40 (s, 9H). LCMS: Rt=1.02 min, m/z=522.2 (M+Na). Chiral HPLC: Rt=1.42 min, de value=100%.
tert-butyl (2S,4S)-2-((4-(5-carbamoyl-6-oxo-2-(trifluoromethyl)-1,6-dihydropyridin-3-yl)phenoxy)methyl)-4-fluoropyrrolidine-1-carboxylate (306) was made using a procedure similar to that used to make 5-(4-((1-acetylpiperidin-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (55), except 1-(4-(hydroxymethyl)piperidin-1-yl)ethan-1-one was replaced with tert-butyl 4-fluoro-2-(hydroxymethyl)pyrrolidine-1-carboxylate. 1H NMR (400 MHz, DMSO-d6) δ=9.60 (m, 1H), 8.16 (m, 1H), 8.02 (m, 1H), 7.70-7.51 (m, 1H), 7.20 (d, J=8.4 Hz, 2H), 7.02 (br d, J=8.8 Hz, 2H), 5.52-5.16 (m, 1H), 4.36-4.10 (m, 2H), 3.90-3.74 (m, 1H), 3.71-3.44 (m, 3H), 2.30 (m, 2H), 1.42 (s, 9H). LCMS: Rt=0.88 min, m/z=444.1 (M+H). Chiral HPLC: Rt=2.16 min, de value=100%.
5-(4-((3-isopropyl-2-oxooxazolidin-5-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (307) was made using a procedure similar to steps 2 and 3 in the procedure used to make 2-oxo-5-(4-((tetrahydro-2H-pyran-4-yl)methyl)phenyl)-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (52), except 4-(4-bromobenzylidene)tetrahydro-2H-pyran was replaced with 5-((4-bromophenoxy)methyl)-3-isopropyloxazolidin-2-one. 1H NMR: (400 MHz, DMSO-d6) δ=8.76 (s, 1H), 8.21 (s, 1H), 7.99 (s, 1H), 7.27 (d, J=8.0 Hz, 2H), 7.03 (d, J=8.0 Hz, 2H), 4.87 (s, 1H), 4.29-4.10 (m, 2H), 3.99-3.84 (m, 1H), 3.65 (t, J=8.0 Hz, 1H), 3.39 (d, J=4.0 Hz, 1H), 1.14 (d, J=4.0 Hz, 6H). LCMS: Rt=0.68 min, m/z=440.1 (M+H).
Step 1: Tosyl chloride (2.44 g, 12.81 mmol) was added to a solution of 5-(hydroxymethyl)oxazolidin-2-one (1.0 g, 8.54 mmol), DMAP (522 mg, 4.27 mmol) and Et3N (1.73 g, 17.08 mmol) in DCM (10 mL) at 0° C. and the mixture stirred at 25° C. for 12 hrs. The reaction mixture was poured into water (20 mL) and extracted with EtOAC (2×20 mL). The organic layers were combined, dried over anhydrous Na2SO4, filtered and concentrated to give crude product which was purified by silica gel column (PE/EA=10/1) to give (2-oxooxazolidin-5-yl)methyl 4-methylbenzenesulfonate. LCMS: Rt=0.64 min, m/z=272.1 (M+H). 1H NMR (400 MHz, DMSO-d6) δ=7.80 (d, J=8.0 Hz, 2H), 7.55 (s, 1H), 7.50 (d, J=8.0 Hz, 2H), 4.79-4.71 (m, 1H), 4.23-4.18 (m, 1H), 4.16-4.10 (m, 1H), 3.50 (t, J=8.0 Hz, 1H), 3.14 (m, 1H), 2.43 (s, 3H).
Step 2: To a solution of 4-bromophenol (1.47 g, 8.48 mmol) in DMF (20 mL) was added Cs2CO3 (5.52 g, 16.96 mmol) followed by (2-oxooxazolidin-5-yl)methyl 4-methylbenzenesulfonate (2.3 g, 8.48 mmol) at 25° C. The mixture was then stirred at 25° C. for 12 hrs. The reaction mixture was poured into water (50 mL) and extracted with EtOAc (2×50 mL). The organic layers were combined, washed with brine (2×50 mL), dried over anhydrous Na2SO4, filtered and concentrated to give crude product. The crude product was stirred with PE/EA (10/1) and precipitate formed. The precipitate was filtered and dried under vacuo to give 5-((4-bromophenoxy)methyl)oxazolidin-2-one. LCMS: Rt=0.70 min, m/z=272, 274 (M+H). 1H NMR (400 MHz, DMSO-d6) δ=7.60 (s, 1H), 7.47 (d, J=8.8 Hz, 2H), 6.95 (d, J=8.8 Hz, 2H), 4.89 (m, 1H), 4.19-4.06 (m, 2H), 3.61 (t, J=9.0 Hz, 1H), 3.32-3.28 (m, 1H).
Step 3: Cs2CO3 (1.44 g, 4.41 mmol) and 2-iodopropane (750 mg, 4.41 mmol) were added to a solution of 5-((4-bromophenoxy)methyl)oxazolidin-2-one (400 mg, 1.47 mmol) in DMF (10 mL) at 25° C. and the mixture stirred at 100° C. for 12 hrs. The reaction mixture was poured into water (20 mL) and extracted with EtOAc (2×10 ml). The organic layers were combined, washed with brine (2×10 mL), dried over anhydrous Na2SO4, filtered and concentrated to give crude product which was purified by silica gel column (PE/EA=5/1) to give 5-((4-bromophenoxy)methyl)-3-isopropyloxazolidin-2-one. LCMS: Rt=0.78 min, m/z=314, 316 (M+H). 1H NMR (400 MHz, DMSO-d6) δ=7.46 (d, J=8.0 Hz, 2H), 6.93 (d, J=8.0 Hz, 2H), 4.90-4.79 (m, 1H), 4.23-4.14 (m, 1H), 4.12-4.06 (m, 1H), 3.89 (m, 1H), 3.62 (t, J=8.0 Hz, 1H), 1.12 (d, J=4.0 Hz, 6H).
5-(4-((3-(cyclopropylmethyl)-2-oxooxazolidin-5-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (308) was made using a procedure similar to steps 2 and 3 in the procedure used to make 2-oxo-5-(4-((tetrahydro-2H-pyran-4-yl)methyl)phenyl)-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (52), except 4-(4-bromobenzylidene)tetrahydro-2H-pyran was replaced with 5-((4-bromophenoxy)methyl)-3-(cyclopropylmethyl)oxazolidin-2-one. 1H NMR (400 MHz, DMSO-d6) δ=13.63 (s, 1H), 13.87-13.42 (m, 1H), 8.21 (s, 1H), 8.04 (s, 1H), 7.27 (d, J=8.4 Hz, 2H), 7.04 (d, J=8.4 Hz, 2H), 4.91 (m, 1H), 4.33-4.12 (m, 2H), 3.80 (m, 1H), 3.52 (m, 1H), 3.06 (m, 2H), 1.06-0.90 (m, 1H), 0.56-0.43 (m, 2H), 0.33-0.15 (m, 2H). LCMS: Rt=0.75 min, m/z=452.0 (M+H).
5-((4-bromophenoxy)methyl)-3-(cyclopropylmethyl)oxazolidin-2-one was obtained using the method similar to the preparation of 5-((4-bromophenoxy)methyl)-3-isopropyloxazolidin-2-one, except 2-iodopropane was replaced with bromomethyl)cyclopropane.
5-(4-((3-ethyl-2-oxooxazolidin-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (309) was made using a procedure similar to steps 2 and 3 in the procedure used to make 2-oxo-5-(4-((tetrahydro-2H-pyran-4-yl)methyl)phenyl)-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (52), except 4-(4-bromobenzylidene)tetrahydro-2H-pyran was replaced with 4-((4-bromophenoxy)methyl)-3-ethyloxazolidin-2-one. 1H NMR (400 MHz, DMSO-d6) δ=9.02 (m, 1H), 8.17 (d, J=6.0 Hz, 1H), 7.88 (br s, 1H), 7.26 (d, J=8.4 Hz, 2H), 7.04 (d, J=8.8 Hz, 2H), 4.42 (m, 1H), 4.21 (m, 2H), 4.15 (m, 2H), 2.52 (m, 2H), 1.11 (m, 3H). LCMS: Rt=0.65 min, m/z=426.1 (M+H).
4-((4-bromophenoxy)methyl)-3-ethyloxazolidin-2-one was obtained using the method similar to the preparation of 5-((4-bromophenoxy)methyl)-3-isopropyloxazolidin-2-one, except 5-(hydroxymethyl)oxazolidin-2-one was replaced with 4-(hydroxymethyl)oxazolidin-2-one, and 2-iodopropane was replaced with iodoethane. LCMS: Rt=0.79 min, m/z=299.9, 301.8 (M+H).
5-(4-((3-isopropyl-2-oxooxazolidin-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (310) was made using a procedure similar to steps 2 and 3 in the procedure used to make 2-oxo-5-(4-((tetrahydro-2H-pyran-4-yl)methyl)phenyl)-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (52), except 4-(4-bromobenzylidene)tetrahydro-2H-pyran was replaced with 4-((4-bromophenoxy)methyl)-3-isopropyloxazolidin-2-one. 1H NMR (400 MHz, DMSO-d6) δ: 10.23 (br s, 1H), 7.91 (s, 1H), 7.31 (m, 1H), 7.19 (d, J=8.4 Hz, 2H), 6.98 (d, J=8.4 Hz, 2H), 4.38 (m, 2H), 4.18 (m, 2H), 4.16-4.09 (m, 3H), 3.83 (m, 2H), 1.27 (d, J=6.8 Hz, 2H), 1.19 (d, J=6.8 Hz, 2H). LCMS: Rt=0.67 min, m/z=440.0 (M+H).
4-((4-bromophenoxy)methyl)-3-isopropyloxazolidin-2-one was obtained using the method similar to the preparation of 4-((4-bromophenoxy)methyl)-3-ethyloxazolidin-2-one, except iodoethane was replaced with 2-iodopropane.
5-(4-((3-(cyclopropylmethyl)-2-oxooxazolidin-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (311) was made using a procedure similar to steps 2 and 3 in the procedure used to make 2-oxo-5-(4-((tetrahydro-2H-pyran-4-yl)methyl)phenyl)-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (52), except 4-(4-bromobenzylidene)tetrahydro-2H-pyran was replaced with 4-((4-bromophenoxy)methyl)-3-(cyclopropylmethyl)oxazolidin-2-one. 1H NMR (400 MHz, DMSO-d6) δ=10.34 (br s, 1H), 7.66 (s, 1H), 6.98 (d, J=8.4 Hz, 3H), 6.95 (m, 1H), 6.78 (d, J=8.4 Hz, 2H), 4.30 (m, 1H), 4.25 (m, 1H), 4.03 (m, 4H), 2.83 (m, 1H), 0.83 (m, 1H), 0.31 (m, 1H), 0.23 (m, 1H), 0.15 (m, 1H), 0.01 (m, 1H). LCMS: Rt=0.69 min, m/z=452.1 (M+H).
4-((4-bromophenoxy)methyl)-3-(cyclopropylmethyl)oxazolidin-2-one was obtained using the method similar to the preparation of 4-((4-bromophenoxy)methyl)-3-ethyloxazolidin-2-one, except iodoethane was replaced with (bromomethyl)cyclopropane.
5-(4-((7-oxabicyclo[2.2.1]heptan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (cis isomer, SFC peak 1) (312) was obtained after SFC purification of the product made using a procedure similar to steps 2 and 3 in the procedure used to make 2-oxo-5-(4-((tetrahydro-2H-pyran-4-yl)methyl)phenyl)-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (52), except 4-(4-bromobenzylidene)tetrahydro-2H-pyran was replaced with 2-((4-bromophenoxy)methyl)-7-oxabicyclo[2.2.1]heptane. 1H NMR (400 MHz, DMSO-d6) δ=8.60 (br s, 1H), 8.24 (s, 1H), 8.10 (br s, 1H), 7.25 (d, J=8.6 Hz, 2H), 7.01 (d, J=8.6 Hz, 2H), 4.55-4.38 (m, 2H), 3.79-3.63 (m, 2H), 2.27-2.16 (m, 1H), 1.71-1.41 (m, 5H), 1.29-1.18 (m, 1H). 19F NMR (376 MHz, DMSO-d6) δ=−60.40 (br s, 3F). LCMS: Rt=0.75 min, m/z=409.3 (M+H). Chiral HPLC: Rt=3.455 min, ee value=98.5%.
5-(4-((7-oxabicyclo[2.2.1]heptan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (cis isomer, SFC peak 2) (313) was obtained after SFC purification of the product made using a procedure similar to steps 2 and 3 in the procedure used to make 2-oxo-5-(4-((tetrahydro-2H-pyran-4-yl)methyl)phenyl)-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (52), except 4-(4-bromobenzylidene)tetrahydro-2H-pyran was replaced with 2-((4-bromophenoxy)methyl)-7-oxabicyclo[2.2.1]heptane. 1H NMR (400 MHz, DMSO-d6) δ=8.65 (br s, 1H), 8.23 (s, 1H), 8.07 (br s, 1H), 7.24 (d, J=8.6 Hz, 2H), 7.01 (d, J=8.8 Hz, 2H), 4.57-4.38 (m, 2H), 3.78-3.65 (m, 2H), 2.27-2.15 (m, 1H), 1.70-1.41 (m, 5H), 1.28-1.18 (m, 1H). 19F NMR (376 MHz, DMSO-d6) δ=−60.39 (br s, 3F). LCMS: Rt=0.75 min, m/z 409.3 (M+H). Chiral HPLC: Rt=4.41 min, ee value=100%.
5-(4-((7-oxabicyclo[2.2.1]heptan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (trans isomer, SFC peak 1) (314) was obtained after SFC purification of the product made using a procedure similar to steps 2 and 3 in the procedure used to make 2-oxo-5-(4-((tetrahydro-2H-pyran-4-yl)methyl)phenyl)-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (52), except 4-(4-bromobenzylidene)tetrahydro-2H-pyran was replaced with 2-((4-bromophenoxy)methyl)-7-oxabicyclo[2.2.1]heptane. 1H NMR (400 MHz, DMSO-d6) δ=8.18 (s, 1H), 7.21 (d, J=8.0 Hz, 2H), 6.97 (d, J=8.0 Hz, 2H), 4.65 (t, J=4.0 Hz, 1H), 4.60-4.54 (m, 1H), 4.18-4.14 (m, 1H), 3.95 (t, J=8.0 Hz, 1H), 2.67-2.54 (m, 1H), 2.04-1.95 (m, 1H), 1.93-1.84 (m, 1H), 1.79-1.59 (m, 2H), 1.56-1.48 (m, 1H), 1.21-1.17 (m, 1H). LCMS: Rt=0.73 min, m/z=409 (M+H). Chiral HPLC: Rt=2.46 min, ee value=100%.
5-(4-((7-oxabicyclo[2.2.1]heptan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (trans isomer, SFC peak 2) (315) was obtained after SFC purification of the product made using a procedure similar to steps 2 and 3 in the procedure used to make 2-oxo-5-(4-((tetrahydro-2H-pyran-4-yl)methyl)phenyl)-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (52), except 4-(4-bromobenzylidene)tetrahydro-2H-pyran was replaced with 2-((4-bromophenoxy)methyl)-7-oxabicyclo[2.2.1]heptane. 1H NMR (400 MHz, DMSO-d6) δ=8.19 (s, 1H), 7.28-7.14 (m, 2H), 7.03-6.90 (m, 2H), 4.65 (t, J=4.0 Hz, 1H), 4.61-4.52 (m, 2H), 4.18-4.14 (m, 1H), 3.95 (t, J=8.0 Hz, 1H), 3.84-3.77 (m, 1H), 3.75-3.68 (m, 1H), 2.63-2.57 (m, 1H), 2.34-2.25 (m, 1H), 2.05-1.85 (m, 1H), 1.79-1.47 (m, 4H), 1.40-1.32 5 (m, 1H), 1.24-1.14 (m, 1H). 19F NMR (376 MHz, DMSO-d6) δ=−60.38 (br s, 3F). LCMS: Rt=0.73 min, m/z=409. Chiral HPLC: Rt=2.63 min, ee value=100%.
5-(4-((3,8-dioxabicyclo[3.2.1]octan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (316) was made using a procedure similar to steps 2 and 3 in the procedure used to make 2-oxo-5-(4-((tetrahydro-2H-pyran-4-yl)methyl)phenyl)-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (52), except 4-(4-bromobenzylidene)tetrahydro-2H-pyran was replaced with 2-((4-bromophenoxy)methyl)-3,8-dioxabicyclo[3.2.1]octane. 1H NMR (400 MHz, DMSO-d6) δ=8.18 (s, 1H), 7.94 (s, 1H), 7.24 (d, J=4.4 Hz, 2H), 7.03 (d, J=8.6 Hz, 2H), 4.42-4.17 (m, 3H), 4.03-3.85 (m, 2H), 3.70 (d, J=9.4 Hz, 1H), 3.27 (s, 1H), 2.07-1.67 (m, 4H). LCMS: Rt=0.90 min, m/z=425.2 (M+H).
Step 1: To a solution of ethyl 7-oxabicyclo[2.2.1]hept-2-ene-2-carboxylate (7 g, 40 mmol) in DCM (100 mL) was added DIBAL-H (80 mL, 80 mmol) at −78° C. Then the mixture was stirred at −78° C. for 2 hr. The reaction mixture was poured into water (200 mL) and the resulting mixture extracted with EA (2×200 mL). The organic layers were combined, dried over anhydrous Na2SO4, filtered and concentrated to give crude product which was purified by prep-TLC (10:1) to give (7-oxabicyclo[2.2.1]hept-2-en-2-yl)methanol (4 g, 31 mmol). 1H NMR (400 MHz, CDCl3) 5.96 (d, J=1.6 Hz, 1H), 4.90 (d, J=11.4 Hz, 2H), 4.33-4.14 (m, 2H), 3.96-3.92 (m, 1H), 1.75 (t, J=7.2 Hz, 2H), 1.13 (d, J=6.0 Hz, 2H).
Step 2: (7-oxabicyclo[2.2.1]hept-2-en-2-yl)methyl 4-methylbenzenesulfonate was obtained using step 1 in the procedure to make 5-((4-bromophenoxy)methyl)-3-isopropyloxazolidin-2-one except 5-(hydroxymethyl)oxazolidin-2-one was replaced with (7-oxabicyclo[2.2.1]hept-2-en-2-yl)methanol. 1H NMR (400 MHz, CDCl3) 7.83-7.80 (m, 2H), 7.35 (d, J=8.0 Hz, 2H), 6.18 (d, J=1.4 Hz, 1H), 5.06-4.93 (m, 2H), 4.30-4.20 (m, 2H), 2.47 (s, 3H), 1.92-1.83 (m, 2H), 1.33 (d, J=5.4 Hz, 2H).
Step 3: 2-((4-bromophenoxy)methyl)-7-oxabicyclo[2.2.1]hept-2-ene was obtained using step 2 in the procedure to make 5-((4-bromophenoxy)methyl)-3-isopropyloxazolidin-2-one except (2-oxooxazolidin-5-yl)methyl 4-methylbenzenesulfonate was replaced with (7-oxabicyclo[2.2.1]hept-2-en-2-yl)methyl 4-methylbenzenesulfonate. 1H NMR (400 MHz, CDCl3) 7.41-7.37 (m, 2H), 6.86-6.77 (m, 2H), 6.18 (d, J=1.6 Hz, 1H), 5.03 (d, J=3.6 Hz, 2H), 4.68 (d, J=4.0 Hz, 2H), 1.86 (d, J=5.0 Hz, 2H), 1.33-1.29 (m, 2H).
Step 4: A solution of 2-((4-bromophenoxy)methyl)-7-oxabicyclo[2.2.1]hept-2-ene (950 mg, 3.5 mmol) in MeOH (10 mL) was stirred at −78° C. for 1 hr under ozone. Then to the mixture was added NaBH4 (300 mg, 7.7 mmol), and the reaction was stirred at 0° C. for 1 hr. The reaction mixture was concentrated to give crude product which was purified by prep-TLC (PE:EA=1:1) to give 2-(4-bromophenoxy)-1-(5-(hydroxymethyl)tetrahydrofuran-2-yl)ethan-1-ol. 1H NMR (400 MHz, CDCl3) 7.43-7.37 (m, 2H), 6.83 (d, J=8.6 Hz, 2H), 4.23-3.78 (m, 6H), 3.58 (d, J=11.6 Hz, 1H), 2.11-1.98 (m, 4H).
Step 5: To a solution of 2-(4-bromophenoxy)-1-(5-(hydroxymethyl)tetrahydrofuran-2-yl)ethan-1-ol (300 mg, 1 mmol), NaH (60 mg, 1.5 mmol) in THF (3 mL) was added TsCl (190 mg, 1 mmol) at 0° C. The mixture was stirred at 25° C. for 2 hr. The reaction mixture was poured into water (10 mL) and the resulting mixture extracted with EA (2×10 mL). The organic layers were combined, dried over anhydrous Na2SO4, filtered and concentrated to give crude product which was purified by column chromatography (PE:EA=3:1) to give (5-(2-(4-bromophenoxy)-1-hydroxyethyl)tetrahydrofuran-2-yl)methyl 4-methylbenzenesulfonate. 1H NMR (400 MHz, CDCl3) 7.81 (t, J=7.8 Hz, 2H), 7.44-7.31 (m, 4H), 6.89-6.75 (m, 2H), 4.24-3.92 (m, 7H), 2.45 (d, J=4.8 Hz, 3H), 2.06-1.94 (m, 3H), 1.90-1.77 (m, 1H).
Step 6: To a solution of (5-(2-(4-bromophenoxy)-1-hydroxyethyl)tetrahydrofuran-2-yl)methyl 4-methylbenzenesulfonate (100 mg, 0.2 mmol) in THF (1 mL) was added NaH (16 mg, 0.4 mmol). The mixture was stirred at 25° C. for 2 hr. The reaction mixture was poured into water (5 mL) and the resulting mixture extracted with EA (2×5 mL). The organic layers were combined, dried over anhydrous Na2SO4, filtered and concentrated to give crude product which was purified by Prep-TLC (PE:EA=1:1) to give 2-((4-bromophenoxy)methyl)-3,8-dioxabicyclo[3.2.1]octane. LCMS Rt=0.82 min, m/z=299.0, 301.0 (M+H).
5-(4-((3,8-dioxabicyclo[3.2.1]octan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (SFC peak 1) (317) was isolated by SFC purification of the product from Example 316. 1H NMR (400 MHz, DMSO-d6) δ=8.91 (s, 1H), 8.19 (s, 1H), 7.96 (s, 1H), 7.24 (d, J=8.4 Hz, 2H), 7.02 (d, J=8.6 Hz, 2H), 4.22 (t, J=6.2 Hz, 2H), 4.03-3.84 (m, 3H), 3.70 5 (d, J=10.8 Hz, 1H), 3.51 (d, J=11.2 Hz, 1H), 2.08-1.98 (m, 1H), 1.92-1.80 (m, 2H), 1.79-1.67 (m, 1H). LCMS: Rt=0.69 min, m/z=425.5 (M+H). Chiral HPLC: Rt=2.51 min, de value=13.7%.
5-(4-((3,8-dioxabicyclo[3.2.1]octan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (SFC peak 2) (318) was isolated by SFC purification of the product from Example 316. 1H NMR (400 MHz, DMSO-d6) δ=8.08 (d, J=10.4 Hz, 1H), 7.22 (d, J=8.4 Hz, 2H), 7.10-6.93 (m, 2H), 4.43-4.15 (m, 4H), 3.90 (d, J=11.8 Hz, 1H), 3.69 (t, J=6.4 Hz, 1H), 3.27 (s, 1H), 2.05-1.79 (m, 4H). LCMS: Rt=0.691 min, m/z=425.5 (M+H). Chiral HPLC: Rt=2.56 min, de value=65.9%.
5-(4-((3,8-dioxabicyclo[3.2.1]octan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (SFC peak 3 was isolated by SFC purification of the product from Example 316. 1H NMR (400 MHz, DMSO-d6) δ=8.12 (s, 1H), 7.28-7.13 (m, 2H), 7.07-6.94 (m, 2H), 4.41-4.13 (m, 4H), 3.90 (d, J=10.8 Hz, 1H), 3.69 (t, J=6.4 Hz, 1H), 3.27 (s, 1H), 2.05-1.73 (m, 4H). LCMS: Rt=0.69 min, m/z=425.5 (M+H). Chiral HPLC: Rt=3.07 min, de value=82.2%.
5-(4-((1,4-dioxepan-6-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (320) was made using a procedure similar to steps 2 and 3 in the procedure used to make 2-oxo-5-(4-((tetrahydro-2H-pyran-4-yl)methyl)phenyl)-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (52), except 4-(4-bromobenzylidene)tetrahydro-2H-pyran was replaced with 6-((4-bromophenoxy)methyl)-1,4-dioxepane. 1H NMR (400 MHz, CDCl3) δ=10.89 (d, J=5.6 Hz, 1H), 7.77 (s, 1H), 7.11 (d, J=8.4 Hz, 2H), 6.98-6.83 (m, 3H), 3.99-3.85 (m, 4H), 3.74-3.62 (m, 6H), 2.47-2.43 (m, 1H). LCMS: Rt=0.68 min, m/z=413.2 (M+H).
5-(4-((6-methyl-1,4-dioxepan-6-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (321) was made using a procedure similar to that used to make 5-(4-((1-acetylpiperidin-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (55), except 1-(4-(hydroxymethyl)piperidin-1-yl)ethan-1-one was replaced with (6-methyl-1,4-dioxepan-6-yl)methanol. 1H NMR: (400 MHz, CDCl3) δ=8.84 (s, 1H), 8.26-8.13 (m, 1H), 7.98 (s, 1H), 7.24 (d, J=8.6 Hz, 2H), 7.01 (d, J=8.6 Hz, 2H), 3.82 (s, 2H), 3.75-3.67 (m, 5H), 3.50 (d, J=12.4 Hz, 1H), 2.08 (s, 2H), 0.96 (s, 3H). LCMS: Rt=0.72 min, m/z=427.2 (M+H).
Step 1: To a solution of 2-((benzyloxy)methyl)-2-methylpropane-1,3-diol (see J. Org. Chem., 1987, 52, 2420-2427) (2.3 g, 11 mmol), ethane-1,2-diyl bis(4-methylbenzenesulfonate) (see J. Org. Chem., 1982, 47, 412-415) (4.1 g, 11 mmol) in xylene (50 mL) was added KOH (22 g, 44 mmol) at 25° C. and the mixture stirred at 150° C. for 3 hrs. The reaction mixture was poured into water (100 mL) and then extracted with EA (100 mL×2). The organic layers were combined, dried over anhydrous Na2SO4, filtered and concentrated to give crude product which was purified by column chromatography (PE:EA=10:1˜5:1) to give 6-((benzyloxy)methyl)-6-methyl-1,4-dioxepane. LCMS: Rt=0.78 min, m/z=237.2 (M+H).
Step 2: To a solution of 6-((benzyloxy)methyl)-6-methyl-1,4-dioxepane (150 mg, 1 mmol) in MeOH (5 mL) was added Pd/C (20 mg) at 25° C. Then the mixture was stirred at 25° C. for 16 hr under H2 (15 psi). TLC (PE/EA=1:1) showed the starting material was consumed and one new major spot (Rf=0.1) was detected. The reaction mixture was filtered and the filtrate was concentrated to give the crude product. The crude product was purified by column chromatography (PE:EA=5:1˜1:1) to give (6-methyl-1,4-dioxepan-6-yl)methanol. 1H NMR (400 MHz, CDCl3) δ=3.89-3.77 (m, 6H), 3.59 (d, J=12.5 Hz, 2H), 3.52 (s, 2H), 0.87 (s, 3H).
5-(4-((5-methyl-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (cis isomer, SFC peak 1) (322) was obtained after SFC purification of the product made using a procedure similar to that used to make 5-(4-((1-acetylpiperidin-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (55), except 1-(4-(hydroxymethyl)piperidin-1-yl)ethan-1-one was replaced with (5-methyl-1,4-dioxan-2-yl)methanol (see Bioorg. Med. Chem., 2009, 17, 8174-8185). 1H NMR: (400 MHz, DMSO-d6) δ=8.69 (s, 1H), 8.24 (s, 1H), 8.06 (s, 1H), 7.27 (d, J=8.6 Hz, 2H), 7.06 (d, J=8.6 Hz, 2H), 4.37-4.11 (m, 2H), 3.91 (d, J=3.4 Hz, 1H), 3.83-3.76 (m, 1H), 3.74-3.65 (m, 2H), 3.62-3.55 (m, 1H), 3.52-3.46 (m, 1H), 1.10 (d, J=6.4 Hz, 3H). LCMS: Rt=0.69 min, m/z=413.1 (M+H). Chiral HPLC: Rt=1.87 min, ee value=75.4%.
5-(4-((5-methyl-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (cis isomer, SFC peak 2) (323) was obtained by SFC of the product from Example 322. 1H NMR: (400 MHz, DMSO-d6) δ=8.60 (s, 1H), 8.26 (s, 1H), 8.11 (s, 1H), 7.28 (d, J=8.6 Hz, 2H), 7.17-7.01 (m, 2H), 4.29 (d, J=10.2 Hz, 1H), 4.22-4.15 (m, 1H), 3.95-3.87 (m, 1H), 3.83-3.77 (m, 1H), 3.74-3.65 (m, 2H), 3.62-3.55 (m, 1H), 3.53-3.46 (m, 1H), 1.10 (d, J=6.4 Hz, 3H). LCMS: Rt=0.79 min, m/z=413.1 (M+H). Chiral HPLC: R=1.97 min, ee value=95.2%.
5-(4-((5-methyl-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (trans isomer, racemate) (324) was obtained by SFC of the product from Example 322. 1H NMR: (400 MHz, DMSO-d6) δ=9.85 (s, 1H), 8.21 (s, 1H), 7.97 (s, 1H), 7.46 (s, 1H), 7.17 (d, J=8.4 Hz, 2H), 7.04-6.87 (m, 2H), 3.97 (d, J=4.8 Hz, 2H), 3.91-3.84 (m, 1H), 3.82-3.74 (m, 2H), 3.59-3.54 (m, 1H), 3.48-3.42 (m, 1H), 3.26-3.19 (m, 1H), 1.01 (d, J=6.2 Hz, 3H). LCMS: Rt=0.71 min, m/z=413.1 (M+H).
5-(4-(((2R,6R)-6-cyclopropyl-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (325) was made using a procedure similar to that used to make 5-(4-((1-acetylpiperidin-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (55), except 1-(4-(hydroxymethyl)piperidin-1-yl)ethan-1-one was replaced with cis-(6-cyclopropyl-1,4-dioxan-2-yl)methanol. 1H NMR (400 MHz, CDCl3) δ=9.13 (s, 1H), 8.57 (s, 1H), 7.21 (d, J=8.0 Hz, 2H), 6.95 (d, J=8.0 Hz, 2H), 6.14 (s, 1H), 4.10 (m, 1H), 4.05-3.92 (m, 3H), 3.87 (m, 1H), 3.52-3.35 (m, 2H), 3.04-2.91 (m, 1H), 0.86-0.73 (m, 1H), 0.65-0.49 (m, 2H), 0.44 (m, 1H), 0.26 (m, 1H). LCMS: Rt=0.78 min, m/z=439.3 (M+H). Chiral HPLC: Rt=2.46 min, ee value=92.4%.
Step 1: Cyclopropylmagnesium bromide (500 mL, 254.71 mmol, 0.5M in THF) was added to 2-(allyloxy)acetaldehyde (150 ml, 169.80 mmol, 1M in THF) in THF (150 mL) dropwise at −70° C. and the mixture stirred at 15° C. for 16 hrs. The reaction mixture was quenched with sat. aq. NH4Cl (300 mL), then extracted with EA (2×100 mL). The organic layers were combined, dried over anhydrous Na2SO4, filtered and concentrated to give crude product which was purified by silica gel (PE) to give 2-(allyloxy)-1-cyclopropylethan-1-ol. 1H NMR (400 MHz, CDCl3) δ=5.79-5.64 (m, 1H), 5.13-4.94 (m, 2H), 3.86-3.78 (m, 2H), 3.61-3.50 (m, 1H), 3.38 (m, 1H), 3.22 (m, 1H), 2.92-2.83 (m, 1H), 2.14 (m, 1H), 1.16-0.97 (m, 1H), 0.38-0.23 (m, 2H), 0.17 (m, 1H), 0.01 (m, 1H).
Step 2: To a solution of 2-(allyloxy)-1-cyclopropylethan-1-ol (4.6 g, 32.35 mmol) in DCM (50 mL) was added m-CPBA (7.26 g, 42.05 mmol) in one portion at 0° C. The mixture was stirred at 15° C. for 24 hrs. The formed solid was filtered out. To the resulting solution was added CSA (2.26 g, 9.71 mmol) and the mixture stirred for a further 3 hrs. The reaction mixture was quenched with sat. aq. Na2CO3 solution (100 mL), then extracted with DCM (2×50 mL). The organic layers were combined, dried over anhydrous Na2SO4, filtered and concentrated to give crude product. The crude product was purified by silica gel column chromatograph (PE to PE/EA=16/1) to give cis-(6-cyclopropyl-1,4-dioxan-2-yl)methanol and trans-(6-cyclopropyl-1,4-dioxan-2-yl)methanol.
Cis-(6-cyclopropyl-1,4-dioxan-2-yl)methanol isomer 1H NMR (400 MHz, MeOD-d4) δ=3.79 (m, 2H), 3.65-3.46 (m, 3H), 3.38-3.25 (m, 5H), 2.92 (m, 1H), 0.81-0.71 (m, 1H), 0.55-0.45 (m, 2H), 0.44-0.36 (m, 1H), 0.32-0.23 (m, 1H).
5-(4-(((2S,6S)-6-cyclopropyl-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (326) was made using a procedure similar to that used to make 5-(4-((1-acetylpiperidin-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (55), except 1-(4-(hydroxymethyl)piperidin-1-yl)ethan-1-one was replaced with cis-(6-cyclopropyl-1,4-dioxan-2-yl)methanol. The racemic mixture was separated by chiral prep-HPLC. 1H NMR (500 MHz, DMSO-d6) δ 13.65 (s, 1H), 8.48 (s, 1H), 8.29 (s, 1H), 8.19 (s, 1H), 7.38-7.19 (m, 2H), 7.11-6.97 (m, 2H), 4.05 (dd, J=10.5, 5.4 Hz, 1H), 4.00 (dd, J=10.4, 4.4 Hz, 1H), 3.89 (ddd, J=10.4, 4.9, 2.8 Hz, 1H), 3.87-3.83 (m, 1H), 3.78 (dd, J=11.4, 2.6 Hz, 1H), 3.32 (d, J=9.8 Hz, 1H), 3.27 (d, J=11.0 Hz, 1H), 2.97 (ddd, J=10.5, 8.2, 2.6 Hz, 1H), 0.76 (qt, J=8.3, 4.9 Hz, 1H), 0.50-0.40 (m, 2H), 0.33 (dtd, J=9.0, 4.6, 2.8 Hz, 1H), 0.30-0.24 (m, 1H). LCMS Rt=0.75 min, m/z=439.3 (M+H). Chiral HPLC: Rt=2.45 min, ee value=99%.
Step 1: Cyclopropylmagnesium bromide (500 mL, 254.71 mmol, 0.5M in THF) was added to 2-(allyloxy)acetaldehyde (150 ml, 169.80 mmol, 1M in THF) in THF (150 mL) dropwise at −70° C. and the mixture stirred at 15° C. for 16 hrs. The reaction mixture was quenched with sat. aq. NH4Cl (300 mL), then extracted with EA (2×100 mL). The organic layers were combined, dried over anhydrous Na2SO4, filtered and concentrated to give crude product which was purified by silica gel (PE) to give 2-(allyloxy)-1-cyclopropylethan-1-ol. 1H NMR (400 MHz, CDCl3) δ=5.79-5.64 (m, 1H), 5.13-4.94 (m, 2H), 3.86-3.78 (m, 2H), 3.61-3.50 (m, 1H), 3.38 (m, 1H), 3.22 (m, 1H), 2.92-2.83 (m, 1H), 2.14 (m, 1H), 1.16-0.97 (m, 1H), 0.38-0.23 (m, 2H), 0.17 (m, 1H), 0.01 (m, 1H).
Step 2: To a solution of 2-(allyloxy)-1-cyclopropylethan-1-ol (4.6 g, 32.35 mmol) in DCM (50 mL) was added m-CPBA (7.26 g, 42.05 mmol) in one portion at 0° C. The mixture was stirred at 15° C. for 24 hrs. The formed solid was filtered out. To the resulting solution was added CSA (2.26 g, 9.71 mmol) and the mixture stirred for a further 3 hrs. The reaction mixture was quenched with sat. aq. Na2CO3 solution (100 mL), then extracted with DCM (2×50 mL). The organic layers were combined, dried over anhydrous Na2SO4, filtered and concentrated to give crude product. The crude product was purified by silica gel column chromatograph (PE to PE/EA=16/1) to give cis-(6-cyclopropyl-1,4-dioxan-2-yl)methanol (880 mg) and trans-(6-cyclopropyl-1,4-dioxan-2-yl)methanol (950 mg).
Cis-(6-cyclopropyl-1,4-dioxan-2-yl)methanol isomer 1H NMR (400 MHz, MeOD-d4) δ=3.79 (m, 2H), 3.65-3.46 (m, 3H), 3.38-3.25 (m, 2H), 2.92 (m, 1H), 0.81-0.71 (m, 1H), 0.55-0.45 (m, 2H), 0.44-0.36 (m, 1H), 0.32-0.23 (m, 1H).
Trans-(6-cyclopropyl-1,4-dioxan-2-yl)methanol isomer 1H NMR (400 MHz, MeOD-d4) δ=3.85 (m, 1H), 3.75-3.71 (m, 2H), 3.69-3.60 (m, 2H), 3.59-3.51 (m, 2H), 2.94 (m, 1H), 1.11 (m, 1H), 0.55-0.49 (m, 2H), 0.37 (m, 1H), 0.24 (m, 1H).
5-(4-(((2R,6S)-6-cyclopropyl-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (327) was made using a procedure similar to that used to make 5-(4-((1-acetylpiperidin-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (55), except 1-(4-(hydroxymethyl)piperidin-1-yl)ethan-1-one was replaced with trans-(6-cyclopropyl-1,4-dioxan-2-yl)methanol. 1H NMR (400 MHz, CDCl3) δ=9.13 (s, 1H), 8.57 (s, 1H), 7.22 (d, J=8.0 Hz, 2H), 6.98 (d, J=8.0 Hz, 2H), 6.10 (s, 1H), 4.33-4.11 (m, 3H), 3.91-3.82 (m, 2H), 3.81-3.75 (m, 1H), 3.63-3.58 (m, 1H), 3.06-2.96 (m, 1H), 1.16-1.05 (m, 1H), 0.66-0.52 (m, 2H), 0.43-0.37 (m, 1H), 0.28-0.19 (m, 1H). LCMS: Rt=0.74 min, m/z=439 (M+H). Chiral HPLC: Rt=2.52 min, ee value=100%.
5-(4-(((2R,6R)-6-methyl-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (328) was made by the same procedure used to make 5-(4-(((2R,6R)-6-cyclopropyl-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (327) except cis-(6-cyclopropyl-1,4-dioxan-2-yl)methanol was replaced with ((2S,6R)-6-methyl-1,4-dioxan-2-yl)methanol. 1H NMR (400 MHz, DMSO-d6) δ=8.53 (br s, 1H), 8.27 (s, 1H), 8.15 (br s, 1H), 7.26 (br d, J=8.4 Hz, 2H), 7.03 (d, J=8.7 Hz, 2H), 4.10-3.79 (m, 4H), 3.77-3.61 (m, 2H), 3.42-3.23 (m, 2H), 3.08 (t, J=11.0 Hz, 1H), 2.54-2.47 (m, 5H), 1.03 (d, J=6.1 Hz, 3H). LCMS: Rt=0.73 min, m/z=413.1 (M+H). Chiral HPLC: Rt=2.11 min, de value=99.1%.
((2S,6R)-6-methyl-1,4-dioxan-2-yl)methanol was obtained using the procedure used to obtain cis-(6-cyclopropyl-1,4-dioxan-2-yl)methanol, except cyclopropylmagnesium bromide was replaced with methylmagnesium bromide.
5-(4-(((2S,6R)-6-methyl-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (329) was made by the same procedure used to make 5-(4-(((2R,6S)-6-cyclopropyl-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (327) except trans-(6-cyclopropyl-1,4-dioxan-2-yl))methanol was replaced with ((2S,6S)-6-methyl-1,4-dioxan-2-yl)methanol. 1H NMR (400 MHz, DMSO-d6) δ=9.13 (br s, 1H), 8.14 (s, 1H), 7.82 (br s, 1H), 7.24 (d, J=8.8 Hz, 2H), 7.04 (d, J=8.8 Hz, 2H), 4.23-3.23 (m, 8H), 1.08 (d, 3H). LCMS: Rt=0.71 min, m/z=413.3 (M+H). Chiral HPLC: Rt=2.54 min, de value=98.7%.
((2S,6R)-6-methyl-1,4-dioxan-2-yl)methanol was obtained using the procedure used to obtain trans-(6-cyclopropyl-1,4-dioxan-2-yl)methanol, except cyclopropylmagnesium bromide was replaced with methylmagnesium bromide.
5-(4-(((2S,6S)-6-methyl-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (329) was obtained by prep-HPLC from the mixture containing Example 327. 1H NMR (400 MHz, DMSO-d6) δ=8.49 (br s, 1H), 8.27 (s, 1H), 8.15 (br s, 1H), 7.28 (d, J=8.6 Hz, 2H), 7.06 (d, J=8.6 Hz, 2H), 4.01 (m, 3H), 3.99 (m, 1H), 3.71 (m, 2H), 3.32 (s, 1H), 3.08 (m, 1H) 1.04 (d, J=6.4 Hz, 3H). LCMS: Rt=0.69 min, m/z=413.4 (M+H). Chiral HPLC: Rt=1.64 min, de value=96.1%.
5-(4-(((2R,6S)-6-methyl-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (331) was obtained by prep-HPLC from the mixture containing Example 328. 1H NMR (400 MHz, DMSO-d6) δ=8.83 (br s, 1H), 8.20 (s, 1H), 7.99 (br s, 1H), 7.26 (d, J=8.6 Hz, 2H), 7.06 (d, J=8.6 Hz, 2H), 4.24 (m, 2H), 4.20 (m, 1H), 3.70 (m, 2H), 3.33 (m, 1H), 1.09 (d, J=6.4 Hz, 3H). LCMS: Rt=0.69 min, m/z=413.3 (M+H). Chiral HPLC: Rt=2.19 min, de value=98.4%.
5-(4-((6-cyclopentyl-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (cis racemate) (332) was made by the same procedure used to make 5-(4-(((2R,6R)-6-cyclopropyl-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (325) except cis-(6-cyclopropyl-1,4-dioxan-2-yl)methanol was replaced with ((2S,6R)-6-cyclopentyl-1,4-dioxan-2-yl)methanol. 1H NMR (400 MHz, CDCl3) δ=12.40 (s, 1H), 9.15 (d, J=4.0 Hz, 1H), 8.58 (s, 1H), 7.22 (d, J=8.0 Hz, 2H), 6.97 (d, J=8.0 Hz, 2H), 6.21 (d, J=4.0 Hz, 1H), 4.11-4.06 (m, 1H), 4.06-3.99 (m, 1H), 3.99-3.90 (m, 2H), 3.81 (m, 1H), 3.50-3.38 (m, 2H), 3.34-3.22 (m, 1H), 1.88-1.77 (m, 2H), 1.70-1.40 (m, 6H), 1.28-1.16 (m, 1H); LCMS: Rt=0.89 min, m/z=467.0 (M+H).
((2S,6R)-6-cyclopentyl-1,4-dioxan-2-yl)methanol was obtained using the procedure used to obtain trans-(6-cyclopropyl-1,4-dioxan-2-yl)methanol, except cyclopropylmagnesium bromide was replaced with cyclopentylmagnesium bromide.
5-(4-((6-cyclopentyl-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (trans racemate) (333) was made by the same procedure used to make 5-(4-(((2R,6S)-6-cyclopropyl-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (327) except trans-(6-cyclopropyl-1,4-dioxan-2-yl)methanol was replaced with ((2S,6S)-6-cyclopentyl-1,4-dioxan-2-yl)methanol. 1H NMR (400 MHz, CDCl3) δ=11.89 (s, 1H), 9.13 (s, 1H), 8.58 (s, 1H), 7.22 (d, J=8.0 Hz, 2H), 6.99 (d, J=8.0 Hz, 2H), 6.06 (s, 1H), 4.25-4.17 (m, 2H), 4.16 (d, J=4.0 Hz, 1H), 3.90-3.69 (m, 3H), 3.57-3.43 (m, 2H), 1.97-1.75 (m, 1H), 1.74-1.53 (m, 6H), 1.52-1.36 (m, 1H), 1.23-1.05 (m, 1H). LCMS: Rt=0.87 min, m/z=467.0 (M+H).
((2S,6S)-6-cyclopentyl-1,4-dioxan-2-yl)methanol was obtained using the procedure used to obtain trans-(6-cyclopropyl-1,4-dioxan-2-yl)methanol, except cyclopropylmagnesium bromide was replaced with cyclopentylmagnesium bromide.
5-(4-((4,7-dioxaspiro[2.5]octan-5-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (SFC peak 1) (334) was obtained by SFC purification of the product made using a procedure similar to that used to make 5-(4-((1-acetylpiperidin-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (55), except 1-(4-(hydroxymethyl)piperidin-1-yl)ethan-1-one was replaced with (4,7-dioxaspiro[2.5]octan-5-ylmethanol. 1H NMR (400 MHz, MeOD-d4) δ=8.17 (s, 1H), 7.20 (d, J=8.5 Hz, 2H), 6.95 (d, J=8.8 Hz, 2H), 4.18-4.11 (m, 1H), 4.07-3.94 (m, 4H), 3.63 (dd, J=9.9, 11.5 Hz, 1H), 3.25 (d, J=11.5 Hz, 1H), 0.93-0.77 (m, 2H), 0.69-0.58 (m, 2H). 19F NMR (376 MHz, MeOD-d4) δ=−62.91 (s, 3F). LCMS: Rt=0.76 min, m/z=424.9 (M+H). Chiral HPLC: Rt=1.77 min, ee value 86%.
Step 1: To a solution of (1-((triisopropylsilyl)oxy)cyclopropyl)methanol (see Bioorg. Med. Chem. Left., 2001, 11, 619-622) (2.8 g, 11.45 mmol) and Ag2O (10.6 g, 45.8 mmol) was added allyl bromide (17 mL) under N2 in the dark at 15° C. The mixture was stirred at 70° C. for 14 h. The reaction mixture was filtered and the filtrate concentrated to give a residue which was purified by silica gel chromatography (PE/EA=200/1) to give (1-((allyloxy)methyl)cyclopropoxy)triisopropylsilane. 1H NMR (400 MHz, DMSO-d6) δ=5.94-5.82 (m, 1H), 5.24 (qd, J=1.8, 17.3 Hz, 1H), 5.16-5.10 (m, 1H), 3.96 (td, J=1.4, 5.3 Hz, 2H), 3.45 (s, 2H), 1.04-1.00 (m, 21H), 0.71-0.59 (m, 4H).
Step 2: To a solution of (1-((allyloxy)methyl)cyclopropoxy)triisopropylsilane (3.7 g, 13 mmol) in THF (25 mL) was added TBAF (6.8 g, 26 mmol) and AcOH (1.56 g, 26 mmol) at 0° C. under N2. The mixture was stirred at 15° C. for 3 d. The reaction mixture was concentrated to give crude product which was purified by silica gel chromotography (PE/EA=30/1) to give 1-((allyloxy)methyl)cyclopropan-1-ol. 1H NMR: (400 MHz, DMSO-d6) δ=5.88 (tdd, J=5.3, 10.5, 17.3 Hz, 1H), 5.25 (qd, J=1.8, 17.3 Hz, 1H), 5.12 (qd, J=1.6, 10.5 Hz, 1H), 4.00-3.95 (m, 2H), 3.38 (s, 2H), 0.59-0.52 (m, 2H), 0.48-0.41 (m, 2H).
Step 3: To a solution of 1-((allyloxy)methyl)cyclopropan-1-ol (600 mg, 4.68 mmol) in DCM (6 mL) was added m-CPBA (1.2 g, 6.09 mmol) in one portion at 0° C. The mixture was stirred at 15° C. for 2 hrs. To the resulting mixture was added CSA (326 mg, 1.40 mmol) and the mixture stirred for a further 3 hrs. The reaction mixture was washed with sat. aq. Na2CO3 (200 mL) and extracted with DCM (20 mL×10) and DCM/i-PrOH (V/V=3/1, 20 mL×3). The organic layers were combined, dried over Na2SO4, filtered and concentrated to give crude product which was purified by silica gel column chromatograph (PE/EA=200/1 to 10/1) to give (4,7-dioxaspiro[2.5]octan-5-yl)methanol. 1H NMR (400 MHz, CDCl3) δ=4.00 (dd, J=2.1, 11.6 Hz, 1H), 3.91-3.76 (m, 2H), 3.66-3.46 (m, 3H), 3.13 (d, J=11.5 Hz, 1H), 0.94-0.73 (m, 2H), 0.67-0.49 (m, 2H).
(4-(4,7-dioxaspiro[2.5]octan-5-ylmethoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (SFC peak 2) (335) was obtained by SFC purification of the product made using a procedure similar to that used to make 5-(4-((1-acetylpiperidin-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (55), except 1-(4-(hydroxymethyl)piperidin-1-yl)ethan-1-one was replaced with (4,7-dioxaspiro[2.5]octan-5-ylmethanol. 1H NMR (400 MHz, MeOD-d4) δ=8.07 (s, 1H), 7.18 (d, J=8.5 Hz, 2H), 6.98-6.88 (m, 2H), 4.19-4.10 (m, 1H), 4.06-3.93 (m, 4H), 3.64-3.59 (m, 1H), 3.25 (d, J=11.5 Hz, 1H), 0.92-0.78 (m, 2H), 0.71-0.58 (m, 2H). 19F NMR (376 MHz, MeOD-d4) δ=−63.04 (s, 3F). LCMS: Rt=0.76 min, m/z=424.9 (M+H). Chiral HPLC: Rt=1.90 min, ee value 87%.
5-(4-((5,5-difluorotetrahydro-2H-pyran-3-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (SFC peak 1) was obtained by SFC purification of the product made using a procedure similar to that used to make 5-(4-((1-acetylpiperidin-4-ylmethoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (55), except 1-(4-(hydroxymethyl)piperidin-1-yl)ethan-1-one was replaced with (R)-(5,5-difluorotetrahydro-2H-pyran-3-yl)methanol. 1H NMR: (400 MHz, DMSO-d6), δ=8.69 (d, J=2.0 Hz, 1H), 8.23 (s, 1H), 8.06 (s, 1H), 7.27 (d, J=8.6 Hz, 2H), 7.03 (d, J=8.6 Hz, 2H), 4.08-3.91 (m, 3H), 3.90-3.78 (m, 1H), 3.68-3.53 (m, 1H), 3.50-3.43 (m, 1H), 2.43-2.27 (m, 2H), 2.12-1.91 (m, 1H). LCMS: Rt=0.76 min, m/z=433.1 (M+H). Chiral HPLC: Rt=1.14 min, ee value=100%.
Step 1: To a solution of 2H-pyran-3(6H)-one (10 g, 100 mmol), vinyl-BF3K (53.6 g, 400 mmol), (R)-BINAP (1.8 g, 3 mmol) in toluene:H2O=4:1 (200 mL) was added [Rh(cod)C]2 (1.5 g, 3 mmol) at 25° C. Then the mixture was added stirred at 100° C. for 8 hrs. The reaction mixture was poured into water (500 mL) and the resulting mixture extracted with EA (500 mL×2). The organic layers were combined, dried over anhydrous Na2SO4 and concentrated to give crude product which was purified by column chromatography (PE:EA=3:1) to give t(R)-5-vinyldihydro-2H-pyran-3(4H)-one. 1H NMR: (400 MHz, CDCl3), δ=5.76 (m, 1H), 5.22-5.04 (m, 2H), 4.10-3.89 (m, 3H), 3.54 (m, 1H), 3.00-2.81 (m, 1H), 2.68 (m, 1H), 2.40 (m, 1H).
Step 2: To a solution of (R)-5-vinyldihydro-2H-pyran-3(4H)-one (2.8 g, 22.2 mmol) in toluene (30 mL) was added DAST (14.7 g, 66.6 mmol) at 0° C. and the mixture stirred at 80° C. for 5 hrs. The reaction mixture was poured into water (50 mL) and the resulting mixture extracted with EA (50 mL×2). The organic layers were combined, dried over anhydrous Na2SO4 and concentrated to give crude product which was purified by column chromatography (PE:EA=10:1) to give (R)-3,3-difluoro-5-vinyltetrahydro-2H-pyran. 1H NMR: (400 MHz, CDCl3), δ=5.57 (m, 1H), 5.09-5.03 (m, 2H), 3.91-3.78 (m, 2H), 3.45-3.24 (m, 1H), 3.06 (m, 1H), 2.63 (m, 1H), 2.27-2.19 (m, 1H), 1.76-1.58 (m, 1H).
Step 3: To a solution of (R)-3,3-difluoro-5-vinyltetrahydro-2H-pyran (700 mg, 4.73 mmol) in MeOH (10 mL) was stirred at −78° C. under 03 (15 psi) for 1 hr. The mixture was warmed at 0° C. then NaBH4 (215 mg, 5.67 mmol) was added and the mixture stirred for 1 hr. The reaction mixture was concentrated to give crude product which was purified by column chromatography (PE:EA=10:1) to give (R)-(5,5-difluorotetrahydro-2H-pyran-3-yl)methanol.
5-(4-((5,5-difluorotetrahydro-2H-pyran-3-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (SFC peak 2) (337) was obtained by SFC purification of the product made using a procedure similar to that used to make 5-(4-((1-acetylpiperidin-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (55), except 1-(4-(hydroxymethyl)piperidin-1-yl)ethan-1-one was replaced with (R)-(5,5-difluorotetrahydro-2H-pyran-3-yl)methanol. 1H NMR: (400 MHz, DMSO-d6), δ=10.87 (d, J=6.0 Hz, 1H), 7.79 (s, 1H), 7.12 (d, J=8.6 Hz, 2H), 6.98-6.89 (m, 3H), 4.04-3.90 (m, 3H), 3.89-3.75 (m, 1H), 3.70-3.53 (m, 1H), 3.45 (m, 1H), 2.41-2.26 (m, 2H), 2.12-1.91 (m, 1H). LCMS: Rt=0.76 min, m/z=433.1 (M+H). Chiral HPLC: Rt=1.22 min, ee value=93%.
5-(4-((4,7-dioxaspiro[2.5]octan-6-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (racemate) (338) was made using a procedure similar to that used to make 5-(4-((1-acetylpiperidin-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (55), except 1-(4-(hydroxymethyl)piperidin-1-yl)ethan-1-one was replaced with (4,7-dioxaspiro[2.5]octan-6-yl)methanol. 1H NMR (400 MHz, DMSO-d6) δ=13.59 (s, 1H), 8.66 (s, 1H), 8.23 (s, 1H), 8.06 (s, 1H), 7.31-7.22 (m, 2H), 7.09-6.97 (m, 2H), 4.08-4.05 (m, 2H), 4.05-4.00 (m, 1H), 3.96 (ddd, J=5.0, 7.6, 10.0 Hz, 1H), 3.84 (dd, J=2.5, 11.2 Hz, 1H), 3.61-3.53 (m, 1H), 0.78-0.72 (m, 1H), 0.71-0.65 (m, 1H), 0.61-0.57 (m, 2H). LCMS: Rt=0.77 min, m/z=425.1 (M+H).
Step 1: To a solution of methyl 1-hydroxycyclopropanecarboxylate (10.0 g, 86.12 mmol) in THF (300 mL) was added NaH (5.17 g, 129.18 mmol) at 0° C. in batches. The mixture was stirred at 0° C. for 1 h. Allyl bromide (15.6 g, 129.18 mmol) was added to the mixture dropwise and the resulting mixture stirred for another 11 hrs. The reaction mixture was poured into water (300 mL) and extracted with EA (200 mL×3). The organic layers were combined, dried over anhydrous Na2SO4, filtered and concentrated to give crude product which was purified by silica gel column chromatography (PE) to give methyl 1-(allyloxy)cyclopropane-1-carboxylate. 1H NMR (400 MHz, CDCl3) δ=6.06-5.88 (m, 1H), 5.29 (qd, J=1.6, 17.2 Hz, 1H), 5.18 (dd, J=1.4, 10.4 Hz, 1H), 4.15 (m, 2H), 3.77 (s, 3H), 1.34-1.31 (m, 2H), 1.24-1.21 (m, 2H).
Step 2: To a solution of methyl 1-(allyloxy)cyclopropane-1-carboxylate (3.7 g, 23.68 mmol) in THF (50 mL) was added LiAlH4 (1.35 g, 35.54 mmol) portionwise at 0° C. The reaction mixture was stirred at 25° C. for 1 hr. The reaction mixture was quenched with water (1.35 mL), NaOH (1.35 g) in water (1.35 ml) and water (1.35 mL) in this order. The mixture was stirred for half an hour and filtered by celite and concentrated to give crude product which was purified by silica gel column chromatography (PE/EA=5/1) to give (1-(allyloxy)cyclopropyl)methanol. 1H NMR (400 MHz, CDCl3) δ=5.95-5.77 (m, 1H), 5.26-5.17 (m, 1H), 5.08 (dd, J=1.3, 10.4 Hz, 1H), 4.01 (td, J=1.4, 5.4 Hz, 2H), 3.60 (d, J=3.5 Hz, 2H), 0.86-0.80 (m, 2H), 0.57-0.48 (m, 2H).
Step 3: To a solution of (1-(allyloxy)cyclopropyl)methanol (1.0 g, 7.80 mmol) in DCM (10 mL) was added m-CPBA (2.06 g, 10.14 mmol) in one portion at 0° C. The mixture was stirred at 15° C. for 12 hrs. The formed solid was filtered out. To the resulting solution was added CSA (544 mg, 2.34 mmol). The crude product was purified by silica gel column chromatograph (PE/EA=5/1) to give (4,7-dioxaspiro[2.5]octan-6-yl)methanol. 1H NMR (400 MHz, CDCl3) δ=4.20 (dd, J=2.2, 11.6 Hz, 1H), 3.86-3.78 (m, 1H), 3.77-3.68 (m, 2H), 3.67-3.61 (m, 2H), 3.27 (d, J=11.6 Hz, 1H), 0.95-0.76 (m, 2H), 0.68-0.54 (m, 2H).
5-(4-((5,5-dimethyl-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (racemate) (339) was made using a procedure similar to that used to make 5-(4-((1-acetylpiperidin-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (55), except 1-(4-(hydroxymethyl)piperidin-1-yl)ethan-1-one was replaced with (5,5-dimethyl-1,4-dioxan-2-yl)methanol. 1H NMR (400 MHz, DMSO-d6) δ=8.23 (s, 1H), 7.94 (s, 1H), 7.16 (d, J=8.4 Hz, 2H), 6.95 (d, J=8.4 Hz, 2H), 3.98 (m, 2H), 3.78 (d, J=4.0 Hz, 1H), 3.64 (m, 1H), 3.60 (m, 1H), 3.54 (d, J=11.4 Hz, 1H), 3.31 (d, J=11.4 Hz, 1H), 1.23 (s, 3H), 1.03 (s, 3H). LCMS: Rt=0.72 min, m/z=427.1 (M+H).
(5,5-dimethyl-1,4-dioxan-2-yl)methano was obtained using the procedure for (4,7-dioxaspiro[2.5]octan-6-yl)methanol, except methyl 1-hydroxycyclopropanecarboxylate was replaced with 2-hydroxy-2-methylpropanoate.
5-(4-((5-(fluoromethyl)-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (SFC peak 1) was obtained by SFC purification of the product made using a procedure similar to that used to make 5-(4-((1-acetylpiperidin-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (55), except 1-(4-(hydroxymethyl)piperidin-1-yl)ethan-1-one was replaced with (5-(fluoromethyl)-1,4-dioxan-2-yl)methanol. 1H NMR: (400 MHz, MeOD-d4) δ=8.28 (s, 1H), 7.24 (d, J=8.6 Hz, 2H), 7.01 (d, J=8.8 Hz, 2H), 4.59 (br s, 1H), 4.48 (m, 1H), 4.36 (m, 1H), 4.10-3.98 (m, 3H), 3.97-3.89 (m, 2H), 3.87-3.75 (m, 1H), 3.62 (m, 2H), 1.36-1.26 (m, 1H). 19F NMR (377 MHz, MeOD-d4) δ=−58.68-−66.13 (m, 3F), −235.36 (s, 1F); LCMS: Rt=0.69 min, m/z=431.2 (M+H). Chiral HPLC: Rt=2.77 min, ee value=92.8%.
Step 1: To a solution of (5-((benzyloxy)methyl)-1,4-dioxan-2-yl)methanol (see Eur. J. Org. Chem., 2001, 5, 875-896) (2 g, 8.39 mmol) in toluene (35 mL) was added DAST (4.06 g, 25.17 mmol) at 0° C. The resulting mixture was stirred at 60° C. for 4 hrs. The mixture was added dropwise to ice water (100 mL) 0° C., diluted with EA (30 mL×3), washed with saturated NaCl solution (2×50 mL), dried over anhydrous Na2SO4, filtered and concentrated. The residue was purified by column chromatography (PE/EA=20/1 to 5/1) to give 2-((benzyloxy)methyl)-5-(fluoromethyl)-1,4-dioxane. 1H NMR (400 MHz, CDCl3) δ=7.40-7.28 (m, 5H), 4.61-4.53 (m, 2H), 4.49-4.32 (m, 1H), 3.94-3.39 (m, 8H).
To a solution of 2-((benzyloxy)methyl)-5-(fluoromethyl)-1,4-dioxane (1 g, 4.16 mmol) in MeOH (20 mL) was added Pd(OH)2 (300 mg, 0.21 mmol) at 15° C. The resulting mixture was stirred under 50 psi of H2 at 50° C. for 12 hrs. The mixture was filtrated and concentrated to give (5-(fluoromethyl)-1,4-dioxan-2-yl)methanol. 1H NMR (400 MHz, CDCl3) δ=4.53-4.43 (m, 1H), 4.35 (m, 1H), 4.03-3.40 (m, 12H).
5-(4-((5-(fluoromethyl)-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (SFC peak 2) (341) was obtained by SFC purification of the product made using a procedure similar to that used to make 5-(4-((1-acetylpiperidin-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (55), except 1-(4-(hydroxymethyl)piperidin-1-yl)ethan-1-one was replaced with (5-(fluoromethyl)-1,4-dioxan-2-yl)methanol. 1H NMR: (400 MHz, MeOD-d4) δ=8.26 (br s, 1H), 7.24 (br d, J=8.4 Hz, 2H), 7.00 (br d, J=8.0 Hz, 2H), 4.59 (br s, 1H), 4.48 (m, 1H), 4.36 (m, 1H), 4.09-3.98 (m, 3H), 3.93 (m, 2H), 3.87-3.74 (m, 1H), 3.62 (m, 2H), 1.42-1.20 (m, 3H), 0.10 (s, 1H). 19F NMR (377 MHz, MeOD-d4) δ=−58.08-−67.02 (m, 3F), −232.46-−238.72 (m, 1F); LCMS: Rt=0.69 min, m/z=431.2 (M+H). Chiral HPLC: Rt=2.91 min, ee value=95.8%.
5-(4-((5-(fluoromethyl)-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (SFC peak 3) (342) was obtained by SFC purification of the product made using a procedure similar to that used to make 5-(4-((1-acetylpiperidin-4-ylmethoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (55), except 1-(4-(hydroxymethyl)piperidin-1-yl)ethan-1-one was replaced with (5-(fluoromethyl)-1,4-dioxan-2-yl)methanol. 1H NMR: (400 MHz, MeOD-5 d4) δ=8.20 (br s, 1H), 7.52-7.31 (m, 1H), 7.21 (br d, J=8.4 Hz, 2H), 6.98 (br d, J=8.4 Hz, 2H), 4.59 (br s, 1H), 4.51-4.31 (m, 2H), 4.11-3.97 (m, 3H), 3.93 (m, 2H), 3.86-3.74 (m, 1H), 3.62 (m, 2H), 1.47-1.06 (m, 5H), 0.10 (s, 1H). 19F NMR (377 MHz, MeOD-d4) δ=−62.92 (br s, 3F), −235.35 (s, 1F). LCMS: Rt=0.69 min, m/z=431.2 (M+H). Chiral HPLC: Rt=3.88 min, ee value=94.6.
5-(4-((5-(fluoromethyl)-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (SFC peak 4) (343) was obtained by SFC purification of the product made using a procedure similar to that used to make 5-(4-((1-acetylpiperidin-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (55), except 1-(4-(hydroxymethyl)piperidin-1-yl)ethan-1-one was replaced with (5-(fluoromethyl)-1,4-dioxan-2-yl)methanol. 1H NMR: (400 MHz, MeOD-d4) δ=8.21 (br s, 1H), 7.53-7.30 (m, 1H), 7.21 (d, J=8.4 Hz, 2H), 6.98 (d, J=8.4 Hz, 2H), 4.59 (br s, 1H), 4.51-4.31 (m, 2H), 4.11-3.97 (m, 3H), 3.97-3.88 (m, 2H), 3.87-3.74 (m, 1H), 3.62 (m, 2H), 1.29 (s, 2H). 19F NMR (377 MHz, MeOD-d4) δ=−62.94 (br s, 3F), −235.35 (s, 1F). LCMS: Rt=0.70 min, m/z=431.2 (M+H). Chiral HPLC: Rt=4.16 min, ee value=90.3%.
5-(4-((5-(difluoromethyl)-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (SFC peak 1) (344) was obtained by SFC purification of the product made using a procedure similar to that used to make 5-(4-((1-acetylpiperidin-4-ylmethoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (55), except 1-(4-(hydroxymethyl)piperidin-1-yl)ethan-1-one was replaced with (5-(difluoromethyl)-1,4-dioxan-2-yl)methanol. 1H NMR (400 MHz, DMSO-d6) δ=8.61 (br s, 1H), 8.23 (br s, 1H), 8.08 (br s, 1H), 7.26 (br d, J=8.4 Hz, 2H), 7.04 (d, J=8.4 Hz, 2H), 6.53-6.18 (m, 1H), 4.20-4.14 (m, 1H), 4.13-4.07 (m, 1H), 4.05-3.96 (m, 1H), 3.92-3.85 (m, 1H), 3.85-3.73 (m, 4H). 19F NMR (376 MHz, DMSO-d6) δ=−40.41 (br s, 3F), −126.70-−130.97 (m, 2F). LCMS: Rt=0.72 min, m/z=449.2 (M+H). Chiral HPLC: R=t 3.17 min, de value=95.5%.
Step 1: To a solution of (5-((benzyloxy)methyl)-1,4-dioxan-2-yl)methanol (6 g, 25.2 mmol, 1.0 eq) in EA (30 mL) was added IBX (17.64 g, 63 mmol, 2.5 eq) at 0° C. The mixture was stirred at 80° C. for 5 hrs. The reaction mixture was filtered and concentrated. The residue was purified by column chromatography (PE/EA=1/1) to give 5-((benzyloxy)methyl)-1,4-dioxane-2-carbaldehyde. 1H NMR (400 MHz, CDCl3): δ 10.04-9.48 (m, 1H), 7.45-7.16 (m, 5H), 4.64-4.44 (m, 2H), 4.15-3.12 (m, 8H).
Step 2: To a solution of 5-((benzyloxy)methyl)-1,4-dioxane-2-carbaldehyde (5 g, 21.1 mmol, 1.0 eq) in DCM (200 mL) was added diethylaminosulfur trifluoride (8.5 g, 52.75 mmol, 2.5 eq) at −15° C. The resulting mixture was stirred at 25° C. for 12 hrs. The mixture was washed with brine (200 ml) and extracted with DCM (50 mL×3). The combined organic layers were dried over anhydrous Na2SO4, filtered and concentrated. The residue was purified by column chromatography (PE/EA=5/1) to give 2-((benzyloxy)methyl)-5-(difluoromethyl))-1,4-dioxane. 1H NMR (400 MHz, CDCl3+): δ 7.31-7.19 (m, 5H), 6.17-5.78 (m, 1H), 5.76-5.43 (m, 1H), 4.53-4.37 (m, 2H), 3.95-3.20 (m, 8H).
Step 3: To a solution of 2-((benzyloxy)methyl)-5-(difluoromethyl)-1,4-dioxane (1.57 g, 6.08 mmol) in MeOH (30 mL) was added Pd(OH)2 (427 mg) at 15° C. The resulting mixture was stirred under 50 psi of H2 at 50° C. for 12 hrs. TLC (PE/EA=3/1, Rf=0.6) showed the starting material was consumed. The mixture was filtrated and concentrated to give (5-(difluoromethyl)-1,4-dioxan-2-yl)methanol. 1H NMR (400 MHz, CDCl3) δ=6.27-5.53 (m, 1H), 4.06-3.52 (m, 9H).
5-(4-((5-(difluoromethyl)-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (SFC peak 2) (345) was obtained by SFC purification of the product made using a procedure similar to that used to make 5-(4-((1-acetylpiperidin-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (55), except 1-(4-(hydroxymethyl)piperidin-1-yl)ethan-1-one was replaced with (5-(fluoromethyl)-1,4-dioxan-2-yl)methanol. 1H NMR (400 MHz, DMSO-d6) δ=8.54 (br s, 1H), 8.25 (s, 1H), 8.12 (br s, 1H), 7.27 (br d, J=8.8 Hz, 2H), 7.05 (d, J=8.4 Hz, 2H), 6.57-6.17 (m, 1H), 4.21-4.14 (m, 1H), 4.14-4.07 (m, 1H), 4.05-3.97 (m, 1H), 3.92-3.85 (m, 1H), 3.85-3.73 (m, 4H). 19F NMR (376 MHz, DMSO-d6) δ=−60.42 (br s, 3F), −125.52-−131.88 (m, 2F). LCMS: Rt=0.72 min, m/z=449.2 (M+H). Chiral HPLC: Rt=3.37 min, de value=74.7%.
5-(4-((5-(difluoromethyl)-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (SFC peak 3) (346) was obtained by SFC purification of the product made using a procedure similar to that used to make 5-(4-((1-acetylpiperidin-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (55), except 1-(4-(hydroxymethyl)piperidin-1-yl)ethan-1-one was replaced with (5-(fluoromethyl)-1,4-dioxan-2-yl)methanol. 1H NMR (400 MHz, DMSO-d6) δ=8.61 (br s, 1H), 8.24 (s, 1H), 8.08 (br s, 1H), 7.26 (br d, J=8.8 Hz, 2H), 7.02 (d, J=8.8 Hz, 2H), 6.22-5.87 (m, 1H), 4.26-4.08 (m, 1H), 4.03 (m, 2H), 4.00-3.92 (m, 1H), 3.92-3.79 (m, 2H), 3.56 (m, 3H). 19F NMR (376 MHz, DMSO-d6) δ=−60.40 (br s, 3F), −101.30-−105.25 (m, 1F), −127.38-−132.46 (m, 1F). LCMS: Rt=0.74 min, m/z=449.2 (M+H). Chiral HPLC: Rt=3.59 min, de value=99.2%.
5-(4-((5-(difluoromethyl)-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (SFC peak 4) (347) was obtained by SFC purification of the product made using a procedure similar to that used to make 5-(4-((1-acetylpiperidin-4-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (55), except 1-(4-(hydroxymethyl)piperidin-1-yl)ethan-1-one was replaced with (5-(fluoromethyl)-1,4-dioxan-2-yl)methanol. 1H NMR (400 MHz, DMSO-d6) δ=8.64 (br s, 1H), 8.22 (br s, 1H), 8.06 (br s, 1H), 7.25 (br d, J=8.4 Hz, 2H), 7.02 (d, J=8.8 Hz, 2H), 6.23-5.86 (m, 1H), 4.07-3.96 (m, 3H), 3.95-3.78 (m, 3H), 3.56 (m, 2H). 19F NMR (376 MHz, DMSO-d6) δ=−60.42 (br s, 3F), −126.72-−134.58 (m, 2F). LCMS: Rt=0.74 min, m/z=449.2 (M+H). Chiral HPLC: Rt=3.81 min, de value=82.8%.
5-(4-((6-(difluoromethyl)-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (trans, SFC peak 1) (348) was obtained by SFC purification of the product made using steps 2 and 3 in the procedure used to make 2-oxo-5-(4-((tetrahydro-2H-pyran-4-yl)methyl)phenyl)-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (52), except 4-(4-bromobenzylidene)tetrahydro-2H-pyran was replaced with 2-((4-bromophenoxy)methyl)-6-(difluoromethyl)-1,4-dioxane. 1H NMR (400 MHz, DMSO-d6) δ=8.71 (s, 1H), 8.23 (s, 1H), 8.05 (s, 1H), 7.27 (d, J=8.0 Hz, 2H), 7.05 (d, J=8.0 Hz, 2H), 6.54-6.17 (m, 1H), 4.29-4.21 (m, 1H), 4.20-4.10 (m, 2H), 4.08-3.95 (m, 1H), 3.85 (m, 1H), 3.81-3.74 (m, 1H), 3.74-3.68 (m, 1H), 3.64 (m, 1H). LCMS: Rt=0.77 min, m/z=448.9 (M+H). Chiral HPLC: Rt=3.11 min, ee value=100%.
Step 1: To a solution of 2-((4-bromophenoxy)methyl)oxirane (100 g, 436.5 mmol) and dry DCM (Volume: 1.5 L) under N2 at 0° C. was added prop-2-en-1-ol (45.4 mL, 654.8 mmol, followed by BF3-diethyl etherate (11 mL, 87.3 mmol). The reaction was stirred at 0° C. for 1 h. Then the reaction was warmed to 25° C. and stirred for 1 h. The mixture was quenched with solid K2CO3 (500 g) and MeOH, then stirred at 25° C. for 10 min. The mixture was filtered and concentrated to dryness. The residue was purified by silica gel column (PE to PE/EA=3/1) to afford the title compound as colorless oil (62% yield). 1H NMR (400 MHz, CDCl3) δ=7.39 (m, 2H), 6.83 (m, 2H), 5.95 (m, 1H), 5.31 (m, 1H), 5.23 (m, 1H), 4.17 (m, 1H), 4.06 (m, 2H), 4.04 (m, 2H), 3.63 (m, 2H), 2.54 (d, J=4.8 Hz, 1H); LCMS: Rt 0.817 min, m/z 287 [M+H].
Step 2: To a solution of 1-(allyloxy)-3-(4-bromophenoxy)propan-2-ol (50 g, 174.13 mmol) and dry DCM (Volume: 400 mL) under N2 was added m-CPBA (46.0 g, 226.36 mmol. The reaction was stirred at 25° C. for 16 hrs, quenched with 10% (w/v) aqueous Na2SO3 and stirred for 30 min, diluted with DCM. The organic layer was separated, washed with saturated aq. NaHCO3 for three times, dried over sodium sulfate and concentrated. The residue was purified by silica gel column (PE to PE/EA=3/1) to afford the title compound as yellow oil (95% yield). 1H NMR (400 MHz, CDCl3) δ=7.40 (m, 2H), 6.82 (m, 2H), 4.17 (s, 1H), 4.01 (m, 2H), 3.85 (m, 1H), 3.71 (m, 1H), 3.69 (m, 1H), 3.47 (m, 1H), 3.44 (m 1H), 2.83 (m, 1H), 2.82 (m, 1H), 2.64 (s, 1H), 2.63 (m, 1H).
Step 3: To a solution of 1-(4-bromophenoxy)-3-(oxiran-2-ylmethoxy)propan-2-ol (49.6 g, 164.94 mmol) and dry DCM (3.3 L) under a stream of N2 was added, BF3-Et2O (4.12 mL, 33 mmol. The reaction stirred at 20° C. under N2 for 3 hrs, quenched with saturated aq. NaHCO3 (500 mL) and stirred at 20° C. for 5 min. The organic layer was separated. The aqueous layer was extracted aqueous layer with DCM (500 mL×3). The combined organic layers were dried over sodium sulfate, and concentrated. The residue was purified by Combiflash to afford the title compound as a yellow oil. 1H NMR (400 MHz, CDCl3) δ=7.39 (d, J=8.8 Hz, 1H), 6.79 (d, J=8.8 Hz, 1H), 4.07 (m, 1H), 4.04-3.99 (m, 1H), 3.96-3.88 (m, 1H), 3.87-3.76 (m, 1H), 3.73-3.65 (m, 1H), 3.63-3.55 (m, 1H), 3.45 (m, 1H); LCMS: Rt 0.73 min, m/z 303, 305 (M+H).
Step 1: To a solution of (6-((4-bromophenoxy)methyl)-1,4-dioxan-2-yl)methanol (1.0 g, 3.30 mmol) in EA (20 mL) was added IBX (2.31 g, 8.25 mmol) at 25° C. Then the mixture was stirred at 80° C. for 3 hr. The reaction mixture was filtered and concentrated to give 6-((4-bromophenoxy)methyl)-1,4-dioxane-2-carbaldehyde which was used for the next step directly. 1H NMR (400 MHz, CDCl3) δ=9.89 (s, 1H), 9.63 (s, 1H), 7.40 (d, J=8.0 Hz, 2H), 6.85-6.73 (m, 2H), 4.37-4.30 (m, 1H), 4.28-3.89 (m, 6H), 3.87-3.78 (m, 1H), 3.68-3.59 (m, 1H), 3.53-3.39 (m, 1H).
Step 2: To a solution of 6-((4-bromophenoxy)methyl)-1,4-dioxane-2-carbaldehyde (1.0 g, 3.32 mmol) in anhydrous DCM (10 mL) was added DAST (642 mg, 3.98 mmol) at 0° C. The mixture was stirred at 20° C. for 12 hr. The reaction mixture was quenched with saturated NaHCO3 solution (3 mL), 10 mL of water was added then extracted with DCM (10 mL×2). The combined organic phase was dried over anhydrous Na2SO4, filtered and concentrated to give crude product which was purified by silica gel column chromatography (PE to PE/EA=10/1) to give 2-((4-bromophenoxy)methyl)-6-(difluoromethyl)-1,4-dioxane. 1H NMR (400 MHz, CDCl3) δ=7.44-7.36 (m, 2H), 6.85-6.77 (m, 2H), 6.21-5.58 (m, 1H), 4.28-4.19 (m, 1H), 4.16-4.02 (m, 2H), 4.00-3.90 (m, 3H), 3.88-3.84 (m, 1H), 3.73 (m, 1H), 3.60-3.45 (m, 1H).
5-(4-((6-(difluoromethyl)-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (trans, SFC peak 2) (349) was obtained by SFC purification of the product made using steps 2 and 3 in the procedure used to make 2-oxo-5-(4-((tetrahydro-2H-pyran-4-yl)methyl)phenyl)-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (52), except 4-(4-bromobenzylidene)tetrahydro-2H-pyran was replaced with 2-((4-bromophenoxy)methyl)-6-(difluoromethyl)-1,4-dioxane. 1H NMR (400 MHz, DMSO-d6) δ=8.71 (s, 1H), 8.23 (s, 1H), 8.05 (s, 1H), 7.27 (d, J=8.0 Hz, 2H), 7.05 (d, J=8.0 Hz, 2H), 6.54-6.17 (m, 1H), 4.29-4.21 (m, 1H), 4.20-4.10 (m, 2H), 4.08-3.95 (m, 1H), 3.85 (m, 1H), 3.81-3.74 (m, 1H), 3.74-3.68 (m, 1H), 3.64 (m, 1H). LCMS: Rt=0.73 min, m/z=449.2 (M+H). Chiral HPLC: Rt=3.41 min, ee value=100%.
5-(4-((6-(difluoromethyl)-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (cis racemic) (350) was made using steps 2 and 3 in the procedure used to make 2-oxo-5-(4-((tetrahydro-2H-pyran-4-yl)methyl)phenyl)-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (52), except 4-(4-bromobenzylidene)tetrahydro-2H-pyran was replaced with 2-((4-bromophenoxy)methyl)-6-(difluoromethyl)-1,4-dioxane. 1H NMR (400 MHz, DMSO-d6) δ=13.61 (s, 1H), 8.56 (s, 1H), 8.25 (s, 1H), 8.12 (s, 1H), 7.27 (d, J=8.0 Hz, 2H), 7.04 (d, J=8.0 Hz, 2H), 6.23-5.90 (m, 1H), 4.09-4.01 (m, 4H), 3.94-3.88 (m, 1H), 3.84 (m, 1H), 3.47-3.39 (m, 2H). LCMS: Rt=0.77 min, m/z=449.0 (M+H).
5-(4-((6-(fluoromethyl)-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (cis, SFC peak 1) (351) was obtained using the procedure described for Example 347, except 2-((4-bromophenoxy)methyl)-6-(difluoromethyl)-1,4-dioxane was replaced with 2-((4-bromophenoxy)methyl)-6-(fluoromethyl)-1,4-dioxane. 1H NMR (400 MHz, DMSO-d6) δ=8.14 (s, 1H), 7.23 (d, J=8.0 Hz, 2H), 7.01 (d, J=8.0 Hz, 2H), 4.52-4.50 (m, 1H), 4.41-4.38 (m, 1H), 4.06-3.98 (m, 3H), 3.97-3.91 (m, 1H), 3.90-3.85 (m, 2H), 3.82-3.78 (m, 1H). LCMS: Rt=0.76 min, m/z=431.2 (M+H). Chiral HPLC: Rt=2.69 min, de value=87.51%.
2-((4-bromophenoxy)methyl)-6-(fluoromethyl)-1,4-dioxane was prepared using the procedure in step 2 of the synthesis of 2-((4-bromophenoxy)methyl)-6-(difluoromethyl)-1,4-dioxane, except 6-((4-bromophenoxy)methyl)-1,4-dioxane-2-carbaldehyde was replaced with (6-((4-bromophenoxy)methyl)-1,4-dioxan-2-yl)methanol 1H NMR (400 MHz, CDCl3) δ=7.38 (d, J=8.0 Hz, 2H), 6.78 (d, J=8.0 Hz, 2H), 4.50 (d, J=4.0 Hz, 1H), 4.40-4.38 (m, 1H), 4.09-4.05 (m, 1H), 4.04-4.00 (m, 1H), 3.98-3.92 (m, 2H), 3.91-3.88 (m, 1H), 3.87-3.84 (m, 1H), 3.52-3.41 (m, 2H).
This compound was separated by SFC from the mixture containing Example 351.
5-(4-((6-(fluoromethyl)-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (cis, SFC peak 2) (352) was obtained by SFC purification of the product made in Example 351. 1H NMR (400 MHz, DMSO-d6) δ=8.07 (s, 1H), 7.21 (d, J=8.0 Hz, 2H), 7.00 (d, J=8.0 Hz, 2H), 4.52-4.50 (m, 1H), 4.41-4.38 (m, 1H), 4.05-3.98 (m, 3H), 3.97-3.91 (m, 1H), 3.90-3.84 (m, 2H), 3.81-3.78 (m, 1H). LCMS: Rt=0.76 min, m/z=431.2 (M+H). Chiral HPLC: Rt=2.78 min, de value=86.57%.
5-(4-((6-(1-methoxycyclopropyl)-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (cis, SFC peak 1) (353) was obtained using the procedure described for Example 347, except 2-((4-bromophenoxy)methyl)-6-(difluoromethyl)-1,4-dioxane was replaced with 2-((4-bromophenoxy)methyl)-6-(1-methoxycyclopropyl)-1,4-dioxane. 1H NMR: (400 MHz, DMSO) δ=8.11 (s, 1H), 7.21 (d, J=8.0 Hz, 2H), 7.00 (d, J=8.4 Hz, 2H), 4.15-4.07 (m, 1H), 4.06-3.97 (m, 2H), 3.95-3.88 (m, 1H), 3.84 (m, 2H), 3.58 (m, 1H), 3.43-3.38 (m, 3H), 3.27 (s, 3H), 3.16 (m, 3H), 0.74-0.55 (m, 4H). LCMS: Rt=0.77 min, m/z=469.0 (M+H). Chiral HPLC: Rt=3.16 min, ee value=90.46%.
Step 1: To a solution of 6-((4-bromophenoxy)methyl)-1,4-dioxane-2-carbaldehyde (2.5 g, 5.31 mmol) in anhydrous THF (30 mL) was added MeMgBr (8.3 mL, 24.91 mmol, 3 M Et2O) at −60° C. under N2. The reaction mixture was warmed to 25° C. and stirred for 2 hrs. The mixture was poured into ice saturated NH4Cl solution (40 mL) and extracted with EA (30 mL×3). The organic layers were combined, dried over Na2SO4 and concentrated in vacuum. The residue was purified by silica gel chromatography (PE/Ethyl acetate=10/1, 1/1) to give 1-(6-((4-bromophenoxy)methyl)-1,4-dioxan-2-yl)ethano. LCMS: Rt=0.77 min, m/z=317, 319 (M+H).
Step 2: 1-(6-((4-bromophenoxy)methyl)-1,4-dioxan-2-yl)ethanone was prepared using the same procedure as 5-((benzyloxy)methyl)-1,4-dioxane-2-carbaldehyde, except (5-((benzyloxy)methyl)-1,4-dioxan-2-yl)methanol was replaced with 1-(6-((4-bromophenoxy)methyl)-1,4-dioxan-2-yl)ethanol. 1H NMR (400 MHz, CDCl3) δ=7.43-7.35 (m, 2H), 6.89-6.77 (m, 2H), 4.20 (m, 1H), 4.14-4.02 (m, 3H), 3.99-3.91 (m, 2H), 3.52-3.32 (m, 2H), 2.23 (s, 3H).
Step 3: To a solution of 1-(6-((4-bromophenoxy)methyl)-1,4-dioxan-2-yl)ethanone (2.0 g, 6.35 mmol, 2,6-lutidine (2 mL) in anhydrous DCM (20 mL) was added TBSOTf (2 mL) at −70° C. under N2. Then the mixture was stirred at 0° C. for 2 hrs. The reaction mixture was poured into aq·NaHCO3 (20 mL) and the resulting mixture extracted with DCM (10 mL×2). The organic layers were combined, dried over anhydrous Na2SO4, filtered and concentrated to give crude product which was purified by silica gel column (PE) to give ((1-(6-((4-bromophenoxy)methyl)-1,4-dioxan-2-yl)vinyl)oxy)(tert-buty)dimethylsilane. 1H NMR (400 MHz, CDCl3) δ=7.42-7.35 (m, 2H), 6.84-6.77 (m, 2H), 4.42 (s, 1H), 4.22 (m, 1H), 4.10-4.02 (m, 3H), 4.00-3.87 (m, 3H), 3.49-3.29 (m, 2H), 0.93 (s, 9H), 0.18 (m, 6H).
Step 4: To a solution of ((1-(6-((4-bromophenoxy)methyl)-1,4-dioxan-2-yl)vinyl)oxy)(tert-butyl)dimethylsilane (1.0 g, 2.33 mmol) in anhydrous Et2O (10 mL) was added in the following order zinc-copper couple (3.05 g, 20.88 mmol), CH2I2 (3.12 g, 0.94 mL, 11.64 mmol) and I2 (1.18 g, 4.66 mmol). The reaction mixture was heated to 45° C. and stirred for 16 hrs. The reaction mixture was poured into water (20 mL) and the mixture extracted with EA (10 mL×2). The organic layers were combined, dried over anhydrous Na2SO4, filtered and concentrated to give crude product which was purified by silica gel column chromatography (PE) to give (1-(6-((4-bromophenoxy)methyl)-1,4-dioxan-2-yl)cyclopropoxy)(tert-buty)dimethylsilane. 1H NMR (400 MHz, CDCl3) δ=7.38 (m, 2H), 6.80-6.75 (m, 2H), 4.03-3.83 (m, 7H), 3.63-3.53 (m, 1H), 3.46-3.38 (m, 1H), 3.29 (m, 1H), 0.84 (s, 9H), 0.77-0.54 (m, 4H), 0.15 (s, 3H), 0.10 (s, 3H).
Step 5: To a solution of (1-(6-((4-bromophenoxy)methyl)-1,4-dioxan-2-yl)cyclopropoxy)(tert-butyl)dimethylsilane (160 mg, 0.406 mmol) in anhydrous THF (10 mL) was added TBAF (0.6 mL, 0.609 mmol) at 25° C. The reaction mixture was stirred at 25° C. for 4 hrs. The mixture was poured into water (10 mL) and extracted with EA (5 mL×3). The organic layers were combined, dried over anhydrous Na2SO4, filtered and concentrated. The residue was purified by silica gel chromatography (PE/EA=10/1) to give 1-(6-((4-bromophenoxy) methyl)-1,4-dioxan-2-yl)cyclopropanol. LCMS: Rt=0.80 min, m/z=351.0, 353.0 (M+Na).
Step 6: To a solution of 1-(6-((4-bromophenoxy) methyl)-1,4-dioxan-2-yl)cyclopropanol (100 mg, 0.30 mmol) in anhydrous dioxane (3 mL) were added TBAB (98 mg, 0.30 mmol), KOH (130 mg, 1.22 mmol) and MeI (130 mg, 0.91 mmol) at 25° C. and the mixture stirred at 80° C. for 4 hrs. The reaction mixture was diluted with water (5 mL) and extracted with EA (3 mL×3). The organic layers were combined, dried over anhydrous Na2SO4, filtered and concentrated. The residue was purified by silica gel chromatography (PE/EA=20/1) to give 2-((4-bromophenoxy)methyl)-6-(1-methoxycyclopropyl)-1,4-dioxane. LCMS: Rt=0.87 min, m/z=365, 367 (M+Na).
5-(4-((6-(2-hydroxypropan-2-yl)-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (cis, SFC peak 1) (354) was obtained using the procedure described for Example 348, except 2-((4-bromophenoxy)methyl)-6-(difluoromethyl)-1,4-dioxane was replaced with 2-(6-((4-bromophenoxy)methyl)-1,4-dioxan-2-yl)propan-2-ol. 1H NMR: (400 MHz, DMSO-d6), δ=8.86-8.55 (m, 1H), 8.24 (s, 1H), 8.07 (br s, 1H), 7.24 (d, J=8.4 Hz, 2H), 7.03 (d, J=8.4 Hz, 2H), 4.44 (s, 1H), 4.03-4.01 (m, 2H), 3.84-3.82 (m, 1H), 3.80-3.79 (m, 2H), 3.33-3.24 (m, 3H), 1.09 (s, 3H), 1.03 (s, 3H). LCMS: Rt=0.73 min, m/z=457.1 (M+H). Chiral HPLC: Rt=1.92 min, ee value=100%.
5-(4-((6-(2-hydroxypropan-2-yl)-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (cis, SFC peak 2) (355) was obtained using the procedure described for Example 348, except 2-((4-bromophenoxy)methyl)-6-(difluoromethyl)-1,4-dioxane was replaced with 2-(6-((4-bromophenoxy)methyl)-1,4-dioxan-2-yl)propan-2-ol. 1H NMR: (400 MHz, DMSO-d6), δ=8.98-8.62 (m, 1H), 8.26 (s, 1H), 8.08 (br s, 1H), 7.24 (d, J=8.4 Hz, 2H), 7.02 (d, J=8.4 Hz, 2H), 4.46 (s, 1H), 4.03-4.01 (m, 2H), 3.84-3.82 (m, 1H), 3.82-3.79 (m, 2H), 3.35-3.27 (m, 2H), 1.09 (s, 3H), 1.03 (s, 3H). LCMS: Rt=0.73 min, m/z=457.1 (M+H). Chiral HPLC: Rt=2.92 min, ee value=97%.
5-(4-((6-(1-methylcyclopropyl)-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (cis, SFC peak 1) (356) was obtained using the procedure described for Example 348, except 2-((4-bromophenoxy)methyl)-6-(difluoromethyl)-1,4-dioxane was replaced with 2-((4-bromophenoxy)methyl)-6-(1-methylcyclopropyl)-1,4-dioxane. 1H NMR (400 MHz, DMSO-d6) δ=9.23 (s, 1H), 8.16 (s, 1H), 8.09 (s, 1H), 7.74 (s, 1H), 7.21 (d, J=8.0 Hz, 2H), 7.00 (d, J=8.0 Hz, 2H), 4.06-3.95 (m, 2H), 3.93-3.86 (m, 1H), 3.82 (d, J=12.0 Hz, 1H), 3.74 (d, J=12.0 Hz, 1H), 3.05 (d, J=12.0 Hz, 1H), 0.99 (s, 3H), 0.50-0.43 (m, 2H), 0.27-0.17 (m, 2H). LCMS: Rt=0.84 min, m/z=453.0 (M+H). Chiral HPLC: Rt=3.91 min, de value=95.5%.
Step 1: A solution of bromo(methyl)triphenylphosphorane (3.63 g, 10.15 mmol) in dry THF (24 mL) under N2 at 25° C. was added KHMDS (1M, 10 mL, 10.15 mmol) The mixture was stirred for 1.5 hrs at 25° C., then cooled to −70° C. A solution of 1-(6-((4-bromophenoxy)methyl)-1,4-dioxan-2-yl)ethanone (800 mg, 2.54 mmol) in THF (8 mL) was added dropwise and the reaction mixture was stirred at −70° C. for 2.5 hrs, then allowed to warm to 25° C. and stirred for 15 hrs. The reaction was quenched by the addition of H2O (50 mL) and extracted with EA (50 mL×3). The organic layers were combined, dried over anhydrous Na2SO4, filtered and concentrated in vacuo to give a residue which was purified by column chromatography (PE/EA=20/1) to give 2-((4-bromophenoxy)methyl)-6-(prop-1-en-2-yl)-1,4-dioxane. LCMS: Rt=0.93 min, m/z=313.0 (M+H). 2-((4-bromophenoxy)methyl)-6-(1-methylcyclopropyl)-1,4-dioxane was obtained using the method of step for in the synthesis of 2-((4-bromophenoxy)methyl)-6-(1-methoxycyclopropyl)-1,4-dioxane, except ((1-(6-((4-bromophenoxy)methyl)-1,4-dioxan-2-yl)vinyloxy)(tert-butyl)dimethylsilane was replaced with 2-((4-bromophenoxy)methyl)-6-(prop-1-en-2-yl)-1,4-dioxane. 1H NMR (400 MHz, CDCl3) δ=7.42-7.34 (m, 2H), 6.83-6.74 (m, 2H), 4.06-3.99 (m, 1H), 3.99-3.94 (m, 1H), 3.94-3.78 (m, 3H), 3.50-3.29 (m, 2H), 3.08-3.05 (m, 1H), 1.05 (s, 3H), 0.57-0.43 (m, 2H), 0.37-0.23 (m, 2H).
5-(4-((6-(1-methylcyclopropyl)-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (cis, SFC peak 2) (357) was obtained using the procedure described for Example 348, except 2-((4-bromophenoxy)methyl)-6-(difluoromethyl)-1,4-dioxane was replaced with 2-((4-bromophenoxy)methyl)-6-(1-methylcyclopropyl)-1,4-dioxane. 1H NMR (400 MHz, DMSO-d6) δ=8.59 (s, 1H), 8.00-7.59 (m, 2H), 7.01 (d, J=8.0 Hz, 2H), 6.80 (d, J=8.0 Hz, 2H), 3.84-3.73 (m, 2H), 3.72-3.63 (m, 1H), 3.59 (d, J=12.0 Hz, 1H), 3.52 (d, J=12.0 Hz, 1H), 2.82 (d, J=12.0 Hz, 1H), 0.76 (s, 3H), 0.27-0.19 (m, 2H), 0.06-0.03 (m, 2H); LCMS: Rt=0.835 min, m/z=453.0 (M+H), Chiral HPLC: Rt=4.258 min, de value=87%.
5-(4-((6-(1,1-difluoroethyl)-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (cis, SFC peak 2) (358) was obtained using the procedure described for Example 348, except 2-((4-bromophenoxy)methyl)-6-(difluoromethyl)-1,4-dioxane was replaced with 2-((4-bromophenoxy)methyl)-6-(1,1-difluoroethyl)-1,4-dioxane. 1H NMR (400 MHz, MeOD-d4) δ=8.30 (s, 1H), 7.25 (d, J=8.0 Hz, 2H), 7.02 (d, J=8.0 Hz, 2H), 4.16-4.03 (m, 3H), 3.98-3.86 (m, 3H), 3.55-3.46 (m, 2H), 1.62 (t, J=20 Hz, 3H). LCMS: Rt=0.78 min, m/z=463.2 (M+H). Chiral HPLC: Rt=4.12 min, ee value=98%.
2-((4-bromophenoxy)methyl)-6-(1,1-difluoroethyl)-1,4-dioxane was prepared using the procedure in step 2 of the synthesis of 2-((4-bromophenoxy)methyl)-6-(difluoromethyl)-1,4-dioxane, except 6-((4-bromophenoxy)methyl)-1,4-dioxane-2-carbaldehyde was replaced with 1-(6-((4-bromophenoxy)methyl)-1,4-dioxan-2-yl)ethanone. LCMS: Rt=0.91 min, m/z=337, 339 (M+H).
5-(4-((6-(1,1-difluoroethyl)-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (cis, SFC peak 1) (359) was obtained by SFC purification of the product made in Example 357. 1H NMR (400 MHz, METHANOL-d4) δ=8.26 (s, 1H), 7.24 (d, J=8.0 Hz, 2H), 7.01 (d, J=8.0 Hz, 2H), 4.15-4.03 (m, 3H), 3.97-3.86 (m, 3H), 3.54-3.46 (m, 2H), 1.62 (t, J=20 Hz, 3H). LCMS: Rt=0.78 min, m/z=463.2 (M+H). Chiral HPLC: Rt=3.04 min, ee value=100%.
5-(4-((6-(ethoxymethyl)-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (cis, SFC peak 1) (360) was obtained using the procedure described for Example 348, except 2-((4-bromophenoxy)methyl)-6-(difluoromethyl)-1,4-dioxane was replaced with 2-((4-bromophenoxy)methyl)-6-(ethoxymethyl)-1,4-dioxane. 1H NMR: (DMSO, 400 MHz), δ: 8.63 (br s, 1H), 8.23 (s, 1H), 8.06 (br s, 1H), 7.26 (d, J=8.8 Hz, 2H), 7.03 (d, J=8.8 Hz, 2H), 4.01-3.73 (m, 6H), 3.45-3.41 (m, 2H), 3.38 (m, 2H), 3.33-3.24 (m, 2H), 1.23-0.84 (m, 3H); LCMS: Rt=0.716 min, m/z 457.3 (M+H), Chiral HPLC: Rt=3.23 min, ee value=97.3%.
To a solution of (6-((4-bromophenoxy)methyl)-1,4-dioxan-2-yl)methanol (150 mg, 0.50 mmol) in THF (2 mL) was added NaH (30 mg, 075 mmol) at 0° C. The mixture was stirred at 0° C. for 0.5 hour. Iodoethane (390 mg, 2.50 mmol) was added to the mixture at 0° C. and the resulting mixture stirred at 25° C. for 15.5 hrs. The mixture was washed with water (5 mL) and extracted with EA (5 mL×2). The organic layers were combined, dried over anhydrous Na2SO4, filtered and concentrated. The residue was purified by column chromatography (PE-PE/EA=5/1) to give 2-((4-bromophenoxy)methyl)-6-(ethoxymethyl)-1,4-dioxane. LCMS: Rt=0.87 min, m/z=331.3, 333.1 (M+H).
5-(4-((6-(ethoxymethyl)-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (cis, SFC peak 2) (361) was obtained by SFC purification of the product made in Example 359. 1H NMR: (400 MHz, DMSO-d6), δ: 8.88 (br s, 1H), 8.18 (br s, 1H), 7.97 (br s, 1H), 7.24 (d, J=8.4 Hz, 2H), 7.02 (d, J=8.4 Hz, 2H), 3.99-3.76 (m, 3H), 3.43-3.40 (m, 3H), 3.96-3.32 (m, 4H), 3.21-2.32 (m, 2H), 1.14-1.05 (m, 3H). LCMS: Rt=0.72 min, m/z=457.3 (M+H). Chiral HPLC: Rt=3.46 min, ee value=100%.
5-(4-((6-((cyclopropylmethoxy)methyl)-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (cis, SFC peak 1) (362) was obtained using the procedure described for Example 348, except 2-((4-bromophenoxy)methyl)-6-(difluoromethyl)-1,4-dioxane was replaced with 2-((4-bromophenoxy)methyl)-6-((cyclopropylmethoxy)methyl)-1,4-dioxane. 1H NMR: (400 MHz, DMSO-d6), δ: 8.47 (brs, 1H), 8.08 (s, 1H), 7.91 (br s, 1H), 7.11 (d, J=8.4 Hz, 2H), 6.88 (d, J=8.4 Hz, 2H), 3.86-3.27 (m, 6H), 3.18-3.06 (m, 4H), 1.07 (s, 1H), 0.82-0.71 (m, 1H), 0.32-0.29 (m, 2H), 0.02-−0.012 (m, 2H). LCMS: Rt=0.74 min, m/z=483.3 (M+H). Chiral HPLC: Rt=3.92 min, ee value=100%.
2-((4-bromophenoxy)methyl)-6-((cyclopropylmethoxy)methyl)-1,4-dioxane was obtained using the procedure in the synthesis of 2-((4-bromophenoxy)methyl)-6-(ethoxymethyl)-1,4-dioxane, except iodoethane was replaced with (bromomethyl)cyclopropane.
5-(4-((6-((cyclopropylmethoxy)methyl)-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (cis, SFC peak 2) (363) was obtained by SFC purification of the product made in Example 361. 1H NMR: (400 MHz, DMSO-d6), δ: 8.54 (br s, 1H), 8.06 (s, 1H), 7.87 (br s, 1H), 7.10 (d, J=8.4 Hz, 2H), 6.88 (d, J=8.8 Hz, 2H), 3.86-3.22 (m, 6H), 3.19-3.06 (m, 4H), 1.19 (br s, 1H), 0.84-0.82 (m, 1H), 0.30-0.28 (m, 2H), 0.013-0.012 (m, 2H). LCMS: Rt=0.75 min, m/z=483.4 (M+H). Chiral HPLC: Rt=4.36 min, ee value=89.6%.
5-(4-((6-(((1-fluorocyclopropyl)methoxy)methyl)-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (cis, SFC peak 1) (364) was obtained using the procedure described for Example 348, except 2-((4-bromophenoxy)methyl)-6-(difluoromethyl)-1,4-dioxane was replaced with 2-((4-bromophenoxy)methyl)-6-(((1-fluorocyclopropyl)methoxy)methyl)-1,4-dioxane. 1H NMR: (400 MHz, DMSO-d6), δ: 9.29 (d, J=6.2 Hz, 1H), 8.17 (s, 1H), 7.85 (s, 1H), 7.27 (d, J=8.4 Hz, 2H), 7.06 (d, J=8.6 Hz, 2H), 4.10-3.99 (m, 3H), 3.95-3.82 (m, 3H), 3.80-3.71 (m, 2H), 3.64-3.51 (m, 2H), 3.39-3.33 (m, 2H), 1.13-0.99 (m, 2H), 0.77 (m, 2H). LCMS: Rt=0.77 min, m/z=501.1 (M+H). Chiral HPLC: Rt=3.595 min, ee value=100%.
2-((4-bromophenoxy)methyl)-6-(((1-fluorocyclopropyl)methoxy)methyl)-1,4-dioxane was obtained using the procedure in the synthesis of 2-((4-bromophenoxy)methyl)-6-(ethoxymethyl)-1,4-dioxane, except iodoethane was replaced with 1-(bromomethyl)-1-fluorocyclopropane.
5-(4-((6-(((1-fluorocyclopropyl)methoxy)methyl)-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (cis, SFC peak 2) (365) was obtained by SFC purification of the product made in Example 361. 1H NMR: (400 MHz, DMSO-d6), δ: 8.49 (s, 1H), 8.07 (s, 1H), 7.91 (s, 1H), 7.10 (d, J=8.6 Hz, 2H), 6.87 (d, J=8.6 Hz, 2H), 3.93-3.77 (m, 3H), 3.73-3.60 (m, 3H), 3.59-3.50 (m, 2H), 3.35 (m, 2H), 3.13 (d, J=11.0 Hz, 2H), 0.90-0.77 (m, 2H), 0.63-0.49 (m, 2H). LCMS: Rt=0.77 min, m/z=501.1 (M+H). Chiral HPLC: Rt=4.09 min, ee value=92%.
5-(4-((6-((3,3-difluorocyclobutoxy)methyl)-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (cis, SFC peak 1) (366) was obtained using the procedure described for Example 348, except 2-((4-bromophenoxy)methyl)-6-(difluoromethyl)-1,4-dioxane was replaced with 2-((4-bromophenoxy)methyl)-6-((3,3-difluorocyclobutoxy)methyl)-1,4-dioxane. 1H NMR: (400 MHz, DMSO-d6), δ=8.63 (s, 1H), 8.23 (s, 1H), 8.08 (s, 1H), 7.25 (d, J=8.4 Hz, 2H), 7.02 (d, J=8.8 Hz, 2H), 4.09-3.92 (m, 4H), 3.89-3.71 (m, 3H), 3.29-3.18 (m, 2H), 2.93-2.78 (m, 2H). LCMS: Rt=0.79 min, m/z=519.0 (M+H). Chiral HPLC: Rt=1.74 min, ee value=94%, Amycoat-MeOH(DEA)-30-7 min-3 mL.
2-((4-bromophenoxy)methyl)-6-((3,3-difluorocyclobutoxy)methyl)-1,4-dioxane was obtained using the procedure in the synthesis of 2-((4-bromophenoxy)methyl)-6-(ethoxymethyl)-1,4-dioxane, except iodoethane was replaced with 3-bromo-1,1-difluorocyclobutane.
5-(4-((6-((3,3-difluorocyclobutoxy)methyl)-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (cis, SFC peak 2) (367) was obtained by SFC purification of the product made in Example 366. 1H NMR: (400 MHz, DMSO-d6), δ=8.66 (s, 1H), 8.22 (s, 1H), 8.06 (s, 1H), 7.25 (d, J=8.0 Hz, 2H), 7.02 (d, J=8.4 Hz, 2H), 4.00 (m, 5H), 3.89-3.70 (m, 4H), 3.30-3.20 (m, 4H), 2.97-2.77 (m, 2H). LCMS: Rt=0.79 min, m/z=519.0 (M+H). Chiral HPLC: Rt=2.22 min, ee value=95%, Amycoat-MeOH(DEA)-30-7 min-3 mL.
5-(4-((6-((2,2-difluoroethoxy)methyl)-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (cis, SFC peak 1) (368) was obtained using the procedure described for Example 348, except 2-((4-bromophenoxy)methyl)-6-(difluoromethyl)-1,4-dioxane was replaced with 2-((4-bromophenoxy)methyl)-6-((2,2-difluoroethoxy)methyl)-1,4-dioxane. 1H NMR (400 MHz, MeOD-d4) δ=8.27 (s, 1H), 7.25 (d, J=8.8 Hz, 2H), 7.01 (d, J=8.8 Hz, 2H), 6.09-5.79 (m, 1H), 4.08-4.02 (m, 3H), 3.90-3.71 (m, 3H), 3.63-3.60 (m, 4H), 3.59-3.31 (m, 2H). 19F NMR (377 MHz, MeOD-d4) δ=−62.77 (s), −122.36 (s). LCMS: Rt=0.875 min, m/z=493.3 (M+H). Chiral HPLC: Rt=0.72 min, de value=99%, AD-3-MeOH (DEA)-40-7 min-3 mL-35.
2-((4-bromophenoxy)methyl)-6-((2,2-difluoroethoxy)methyl)-1,4-dioxane was obtained using the procedure in the synthesis of 2-((4-bromophenoxy)methyl)-6-(ethoxymethyl)-1,4-dioxane, except iodoethane was replaced with 1,1-difluoro-2-iodoethane.
5-(4-((6-((2,2-difluoroethoxy)methyl)-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (cis, SFC peak 2) (369) was obtained by SFC purification of the product made in Example 368. 1H NMR (400 MHz, MeOD-d4) δ=8.25 (s, 1H), 7.24 (d, J=8.8 Hz, 2H), 7.00 (d, J=8.8 Hz, 2H), 6.09-5.79 (m, 1H), 4.05-4.02 (m, 3H), 3.90-3.71 (m, 3H), 3.63-3.60 (m, 4H), 3.59-3.39 (m, 2H). 19F NMR (377 MHz, MeOD-d4) δ=−62.77 (s, 3F), −122.37 (s). LCMS: Rt=0.88 min, m/z=492.9 (M+H). Chiral HPLC: Rt=0.995 min, de value=95%, AD-3-MeOH(DEA)-40-7 min-3 mL-3.
5-(4-((6-((2-methoxy-2-methylpropoxy)methyl)-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (cis, SFC peak 1) (370) was obtained using the procedure described for Example 348, except 2-((4-bromophenoxy)methyl)-6-(difluoromethyl)-1,4-dioxane was replaced with 2-((4-bromophenoxy)methyl)-6-((2-methoxy-2-methylpropoxy)methyl)-1,4-dioxane. 1H NMR: (400 MHz, DMSO-d6), δ: 9.23 (s, 1H), 8.17 (s, 1H), 7.85 (s, 1H), 7.27 (d, J=8.0 Hz, 2H), 7.05 (d, J=8.4 Hz, 2H), 4.11-3.98 (m, 3H), 3.95-3.81 (m, 3H), 3.38-3.30 (m, 6H), 3.16 (s, 3H), 1.12 (s, 6H). LCMS: Rt=0.70 min, m/z=515.3 (M+H). Chiral HPLC: Rt=3.59 min, ee value=98%.
2-((4-bromophenoxy)methyl)-6-((2-methoxy-2-methylpropoxy)methyl)-1,4-dioxane was obtained using the procedure in the synthesis of 2-((4-bromophenoxy)methyl)-6-(ethoxymethyl)-1,4-dioxane, except iodoethane was replaced with 1-iodo-2-methoxy-2-methylpropane.
5-(4-((6-((2-methoxy-2-methylpropoxy)methyl)-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (cis, SFC peak 2) (371) was obtained by SFC purification of the product made in Example 370. 1H NMR: (400 MHz, DMSO-d6), δ: 10.11 (s, 1H), 8.00 (s, 1H), 7.42 (s, 1H), 7.21 (d, J=8.4 Hz, 2H), 7.01 (br d, J=8.6 Hz, 2H), 4.12-3.97 (m, 3H), 3.94-3.80 (m, 3H), 3.29 (s, 6H), 3.16 (s, 3H), 1.12 (s, 6H). LCMS: Rt=0.72 min, m/z=515.3 (M+H). Chiral HPLC: Rt=4.09 min, ee value=95.5%.
2-oxo-5-(4-((6-((trifluoromethoxy)methyl)-1,4-dioxan-2-yl)methoxy)phenyl)-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (cis, SFC peak 1) (372) was obtained using the procedure described for Example 348, except 2-((4-bromophenoxy)methyl)-6-(difluoromethyl)-1,4-dioxane was replaced with 2-((4-bromophenoxy)methyl)-6-((trifluoromethoxy)methyl)-1,4-dioxane. 1H NMR (400 MHz, DMSO-d6) δ=9.05 (s, 1H), 8.14 (s, 1H), 8.01-7.70 (m, 1H), 7.23 (d, J=8.4 Hz, 2H), 7.02 (d, J=8.6 Hz, 2H), 4.18-3.79 (m, 9H), 3.30 (s, 1H). LCMS: Rt=0.83 min, m/z=497.0 (M+H). Chiral HPLC: Rt=2.65 min, ee value=100%.
To a solution of (6-((4-bromophenoxy)methyl)-1,4-dioxan-2-yl)methanol (600 mg, 2 mmol), AgOTf (1 g, 4.0 mmol), Selectfluor (1 g, 3 mmol), KF (350 mg, 6 mmol) in EA (8 mL) was added 2-fluorpyridine (400 mg, 4 mmol) and trimethyl(trifluoromethyl)silane (570 mg, 4 mmol). The mixture was stirred at 25° C. for 16 hrs. The reaction mixture was poured into water (10 mL) and the resulting mixture extracted with EA (10 mL×2). The organic layers were combined, dried over anhydrous Na2SO4, filtered and concentrated to give crude product which was purified by Prep-TLC (PE:EA=1:1) to give 2-((4-bromophenoxy)methyl)-6-((trifluoromethoxy)methyl)-1,4-dioxane. 1H NMR (400 MHz, CDCl6) δ=7.47-7.34 (m, 2H), 6.87-6.76 (m, 2H), 4.05-3.88 (m, 8H), 3.49-3.39 (m, 2H).
2-oxo-5-(4-((6-((trifluoromethoxy)methyl)-1,4-dioxan-2-yl)methoxy)phenyl)-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (cis, SFC peak 2) (373) was obtained by SFC purification of the product made in Example 372. 1H NMR (400 MHz, DMSO-d6) δ=9.73 (s, 1H), 8.01 (s, 1H), 7.63-7.44 (m, 1H), 7.18 (d, J=8.4 Hz, 2H), 6.99 (d, J=8.6 Hz, 2H), 4.35-3.74 (m, 9H), 3.30-3.28 (m, 1H). LCMS: Rt=0.83 min, m/z=497.0 (M+H). Chiral HPLC: Rt=2.90 min, ee value=86.12%.
5-(4-((6-((1H-pyrrol-1-yl)methyl)-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (cis, SFC peak 1) (374) was obtained using the procedure described for Example 348, except 2-((4-bromophenoxy)methyl)-6-(difluoromethyl)-1,4-dioxane was replaced with 1-((6-((4-bromophenoxy)methyl)-1,4-dioxan-2-yl)methyl)-1H-pyrrole. 1H NMR (400 MHz, DMSO-d6) δ=8.12 (s, 1H), 7.80 (s, 1H), 7.22 (d, J=8.0 Hz, 2H), 7.00 (d, J=8.0 Hz, 2H), 6.74 (s, 2H), 5.98 (s, 2H), 4.01 (s, 2H), 3.95-3.94 (m, 4H), 3.86-3.83 (m, 2H), 3.60-3.58 (m, 1H), 3.15-3.09 (m, 1H). LCMS: Rt=0.67 min, m/z=478.1 (M+H). Chiral HPLC: Rt=2.03 min, ee value=100%.
Step 1: To a solution of (6-((4-bromophenoxy)methyl)-1,4-dioxan-2-yl)methanol (1.0 g, 3.30 mmol) in anhydrous DCM (20 mL) was added Et3N (668 mg, 6.60 mmol) and MsCl (567 mg, 4.95 mmol) at 0° C. and the mixture stirred at 25° C. for 3 hrs. The reaction mixture was poured into water (20 mL) and the organic phase was separated and dried over anhydrous Na2SO4, filtered and concentrated to give crude product. The crude product was purified by silica gel column (PE) to give (6-((4-bromophenoxy)methyl)-1,4-dioxan-2-yl)methyl methanesulfonate. 1H NMR (400 MHz, CDCl3) δ=7.45-7.35 (m, 2H), 6.82-6.71 (m, 2H), 4.25-4.24 (m 2H), 4.10-3.82 (m, 6H), 3.50-3.39 (m, 2H), 3.07 (s, 3H). LCMS: Rt=0.82 min, m/z=381/383 (M+H).
Step 2: To a solution of pyrrole (30 mg, 0.44 mmol) in anhydrous DMF (2 mL), then NaH (21 mg, 0.52 mool) was added at 0° C., The reaction was stirred at 0° C. for 0.5 hrs and (6-((4-bromophenoxy)methyl)-1,4-dioxan-2-yl)methyl methanesulfonate (200 mg, 0.52 mmol) added. The reaction was stirred at 25° C. for 17 hrs. The reaction mixture was poured into H2O (10 mL), and extracted with EA (10 mL×3). The organic layers were combined, washed with brine (20 mL), dried over anhydrous Na2SO4, filtered and concentrated to give crude product which was purified by reversed phase column chromatography (basic) to give 1-((6-((4-bromophenoxy)methyl)-1,4-dioxan-2-yl)methyl)-1H-pyrrole. LCMS: Rt=1.02 min, m/z=352.0/354.0 (M+H).
5-(4-((6-((1H-pyrrol-1-yl)methyl)-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (cis, SFC peak 2) (375) was obtained by SFC purification of the product made in Example 374. 1H NMR (400 MHz, DMSO-d6) δ=8.09 (s, 1H), 7.21 (d, J=8.0 Hz, 2H), 6.99 (d, J=8.0 Hz, 2H), 6.74 (s, 2H), 5.98 (s, 2H), 4.01-4.00 (m, 3H), 3.95-3.94 (m, 3H), 3.86-3.83 (m, 2H), 3.60-3.58 (m, 1H), 3.17-3.08 (m, 1H). LCMS: Rt=0.67 min, m/z=478.1 (M+H). Chiral HPLC: Rt=2.91 min, ee value=95%.
5-(4-((6-((1H-pyrazol-1-yl)methyl)-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (cis, SFC peak 1) (376) was obtained using the procedure described for Example 348, except 2-((4-bromophenoxy)methyl)-6-(difluoromethyl)-1,4-dioxane was replaced with 1-((6-((4-bromophenoxy)methyl)-1,4-dioxan-2-yl)methyl)-1H-pyrazole. 1H NMR (400 MHz, DMSO-d6) δ=8.50 (s, 1H), 8.26 (s, 1H), 8.14 (s, 1H), 7.69-7.68 (m, 1H), 7.45 (s, 1H), 7.26 (d, J=8.0 Hz, 2H), 7.02 (d, J=8.0 Hz, 2H), 6.24 (s, 1H), 4.19-4.18 (m, 2H), 4.03-3.95 (m, 4H), 3.86-3.83 (m, 2H), 3.70-3.64 (m, 1H), 3.21-3.15 (m, 1H). LCMS: Rt=0.62 min, m/z=479.1 (M+H). Chiral HPLC: Rt=1.39 min, ee value=86%.
5-(4-((6-((1H-pyrazol-1-yl)methyl)-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (cis, SFC peak 2) was obtained by SFC purification of the product made in Example 376. 1H NMR (400 MHz, DMSO-d6) 9.73-9.26 (m, 1H), 8.06 (s, 1H), 7.82-7.61 (m, 2H), 7.45 (s, 1H), 7.19 (d, J=8.0 Hz, 2H), 6.98 (d, J=8.0 Hz, 2H), 6.24 (s, 1H), 4.20-4.19 (m, 2H), 4.15-3.94 (m, 4H), 3.86-3.84 (m, 2H), 3.69-3.66 (m, 1H), 3.24-3.15 (m, 1H). LCMS: Rt=0.62 min, m/z=479.1 (M+H). Chiral HPLC: Rt=1.45 min, ee value=75%.
5-(4-((6-(((3-methyl)oxetan-3-yl)oxy)methyl)-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (cis, SFC peak 1) (378) was obtained using the procedure described for Example 348, except 2-((4-bromophenoxy)methyl)-6-(difluoromethyl)-1,4-dioxane was replaced with 2-((4-bromophenoxy)methyl)-6-(((3-methyl)oxetan-3-yl)oxy)methyl)-1,4-dioxane. 1H NMR: (400 MHz, DMSO-d6), δ=8.84 (brs, 1H), 8.18 (s, 1H), 7.97 (br s, 1H), 7.25 (d, J=8.4 Hz, 2H), 7.03 (d, J=8.4 Hz, 2H), 4.51 (d, J=6.4 Hz, 2H), 4.26 (d, J=6.4 Hz, 2H), 4.02 (m, 6H), 3.42 (m, 2H), 3.34 (m, 2H), 1.40 (s, 3H). LCMS: Rt=0.70 min, m/z=499.4 (M+H). Chiral HPLC: Rt=1.01 min, ee value=98%.
5-(4-((6-(((3-methyl)oxetan-3-yl)oxy)methyl)-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (cis, SFC peak 2) (379) was obtained by SFC purification of the product made in Example 378. 1H NMR: (400 MHz, DMSO-d6), δ=9.01 (br s, 1H), 8.15 (s, 1H), 7.89 (br s, 1H), 7.24 (d, J=8.4 Hz, 2H), 7.02 (d, J=8.4 Hz, 2H), 4.51 (d, J=6.4 Hz, 2H), 4.26 (d, J=6.4 Hz, 2H), 4.00 (m, 6H), 3.41 (m, 2H), 3.30 (m, 2H), 1.43 (s, 3H). LCMS: Rt=0.70 min, m/z=499.3 (M+H). Chiral HPLC: Rt=1.36 min, ee value=93%.
Step 1: To an oven-dried 500 mL flask was added 4-bromophenol (10.0 g, 57.8 mmol) and potassium carbonate (39.9 g, 289 mmol). The vessel was sealed and purged with vac/N2 (x)3 and acetonitrile (100 mL) and epichlorohydrin (22.60 mL, 289 mmol) were added. A reflux condenser was attached and the reaction heated to 100° C. for 3 h. The reaction mixture was cooled to rt, diluted with Et2O (1.5 L), washed with 2M NaOH, 1:1 brine/water (×2), dried over Na2SO4, filtered through SiO2 and concentrated in vacuo to give 2-((4-bromophenoxy)methyl)oxirane.
Step 2: To a 5 mL microwave vial was added 2-((4-bromophenoxy)methyl)oxirane (1.5 g, 6.55 mmol). The solids were melted via heat gun and water (0.354 ml, 19.64 mmol) and DMF (0.076 ml, 0.98 mmol) were added. The vial was sealed and heated to 110° C. for 22 hours. The reaction was diluted with EtOAc and washed with brine, then dried over sodium sulfate and concentrated. The crude material was purified via silica gel chromatography (ISCO, 0 to 70% ethyl acetate/heptane) to give 3-(4-bromophenoxy)propane-1,2-diol. LCMS Rt=0.69 min, m/z=246.9, 248.8 (M+H).
Step 3: To a 100 mL flask was 3-(4-bromophenoxy)propane-1,2-diol (700 mg, 2.83 mmol) and imidazole (289 mg, 4.25 mmol). Dry THF (14 mL) was added, followed by dropwise addition of TBDPS-Cl (0.958 ml, 3.68 mmol). The reaction was then stirred at RT for 3 hours, quenched with MeOH (0.5 mL), filtered, and concentrated down. The crude material was purified via silica gel chromatography (ISCO, 0 to 20% ethyl acetate/heptane) to give 1-(4-bromophenoxy)-3-((tert-butyldiphenylsilyl)oxy)propan-2-ol. 1H NMR (500 MHz, CDCl3) δ 7.67-7.62 (m, 4H), 7.47-7.41 (m, 2H), 7.40-7.33 (m, 6H), 6.76 (d, J=8.9 Hz, 2H), 4.08 (h, J=5.3 Hz, 1H), 4.04-3.97 (m, 2H), 3.83 (d, J=5.0 Hz, 2H), 2.53 (d, J=5.8 Hz, 1H), 1.07 (s, 9H).
Step 4: A solution of 1-(4-bromophenoxy)-3-((tert-butyidiphenylsilyl)oxy)propan-2-ol (1.18 g, 2.43 mmol) in dry THF (25 mL) was purged with N2 and cooled to 0° C. Under N2, triphenylphosphine (1.275 g, 4.86 mmol) was added, followed by DIAD (1.000 mL, 5.08 mmol) and DPPA (0.926 mL, 4.86 mmol). After stirring the mixture at 0° C. for 30 min, the reaction was warmed to RT and stirred for 6 hours. The crude material was filtered, concentrated, and purified via silica gel chromatography twice (ISCO, first with 0 to 10% ethyl acetate/heptane, then with 30% DCM/heptane) to give (2-azido-3-(4-bromophenoxy)propoxy)(tert-butyl)diphenylsilane. The material was used in the next step without further purification.
Step 5: To a 100 mL flask was added (2-azido-3-(4-bromophenoxy)propoxy)(tert-butyl)diphenylsilane (760 mg, 1.49 mmol), dry THF (15 mL), and TBAF (1M solution in THF, 1.9 ml, 1.9 mmol). The reaction was stirred at RT for 30 min. The reaction was quenched with sat. NH4Cl, extracted with EtOAc twice, dried over sodium sulfate, and concentrated down. The crude material was purified via silica gel chromatography (ISCO, 0 to 30% ethyl acetate/heptane) to give 1-azido-3-(4-bromophenoxy)propan-2-ol. 1H NMR (500 MHz, CDCl3) δ 7.41 (d, J=8.3 Hz, 2H), 6.82 (d, J=8.2 Hz, 2H), 4.19 (t, J=5.5 Hz, 1H), 4.00 (d, J=5.3 Hz, 2H), 3.55 (qd, J=12.7, 5.3 Hz, 2H), 2.48 (s, 1H)
Step 6: To a 50 mL flask was added 1-azido-3-(4-bromophenoxy)propan-2-ol (90 mg, 0.333 mmol) and dry THF (3 mL). The mixture was cooled to 0° C., then NaH (26.5 mg, 0.662 mmol) was added and the reaction stirred at 0° C. for 30 min. (3-bromo-1-propyn-1-yl)cyclopropane (0.053 mL, 0.496 mmol) was then added, the ice bath removed and the reaction let warm to RT and stirred for 16 hours. The reaction was quenched with sat. NH4Cl, extracted with EtOAc twice, dried over sodium sulfate, and concentrated. The crude material was used in the next step without further purification. LCMS Rt=1.13 min, m/z=349.9, 351.9 (M+H).
Step 7: To a microwave vial was added 1-(3-azido-2-((3-cyclopropylprop-2-yn-1-yl)oxy)propoxy)-4-bromobenzene (116 mg, crude) and dry toluene (3 mL). The vial was sealed and heated to 115° C. for 90 min. The crude material was then directly purified via silica gel chromatography (ISCO, 0 to 70% ethyl acetate/heptane) to give 6-((4-bromophenoxy)methyl)-3-cyclopropyl-6,7-dihydro-4H-[1,2,3]triazolo[5,1-c][1,4]oxazine. LCMS Rt=0.92 min, m/z=349.9, 351.9 (M+H).
Step 8: To a 5 mL microwave vial was added bis(pinacolato)diboron (83 mg, 0.327 mmol, PdCl2(dppf)-DCM complex (20.5 mg, 0.025 mmol), and potassium acetate (74 mg, 0.754 mmol. The vial was purged with N2 for a few minutes, then under a stream of N2, a solution of 6-((4-bromophenoxy)methyl)-3-cyclopropyl-6,7-dihydro-4H-[1,2,3]triazolo[5,1-c][1,4]oxazine (88 mg, 0.251 mmol) in dry dioxane (2.5 mL) was added. The vial was sealed and heated to 90° C. for 1 hour. The crude was concentrated down and purified via silica gel chromatography (ISCO, 0 to 70% ethyl acetate/heptane) to give 3-cyclopropyl-6-((4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenoxy)methyl)-6,7-dihydro-4H-[1,2,3]triazolo[5,1-c][1,4]oxazine. LCMS Rt=0.99 min, m/z=398.1 (M+H).
Step 9: To a 50 mL flask was added 3-cyclopropyl-6-((4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenoxy)methyl)-6,7-dihydro-4H-[1,2,3]triazolo[5,1-c][1,4]oxazine (92 mg, 0.232 mmol, 5-bromo-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (60 mg, 0.211 mmol, and PdCl2(dtbpf) (5.16 mg, 5.26 μmol). The flask was purged with N2 for several minutes, then under a stream of N2, TPGS-750 2 w % (2 mL) was added, followed by triethylamine (0.147 mL, 1.05 mmol. The reaction was then heated to 40° C. for 64 hours. The reaction was acidified with 1M HCl, extracted with EtOAc twice, dried over sodium sulfate, and concentrated down. The residue was dissolved in DMSO and purified via reverse phase HPLC. The pure fractions were lyophilized to give 5-(4-((3-cyclopropyl-6,7-dihydro-4H-[1,2,3]triazolo[5,1-c][1,4]oxazin-6-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide. 1H NMR (500 MHz, DMSO-d6) δ 8.47 (s, 1H), 8.30 (s, 1H), 8.19 (s, 1H), 7.32 (d, J=8.7 Hz, 2H), 7.11 (d, J=8.8 Hz, 2H), 5.16 (d, J=14.9 Hz, 1H), 4.89 (d, J=15.0 Hz, 1H), 4.62 (dd, J=12.7, 3.4 Hz, 1H), 4.37 (ddd, J=13.6, 6.3, 3.3 Hz, 1H), 4.33 (dd, J=10.8, 3.2 Hz, 1H), 4.28 (dd, J=10.8, 6.2 Hz, 1H), 4.20 (dd, J=12.7, 10.6 Hz, 1H), 1.85 (tt, J=8.4, 5.1 Hz, 1H), 0.93-0.85 (m, 2H), 0.82-0.74 (m, 2H). LCMS Rt=3.13 min, m/z=476.0 (M+H).
5-(4-((3-cyclopropyl-6,7-dihydro-4H-[1,2,3]triazolo[5,1-c][1,4]oxazin-7-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (381) was obtained using the procedure described for Example 348, except 2-((4-bromophenoxy)methyl)-6-(difluoromethyl)-1,4-dioxane was replaced with 7-((4-bromophenoxy)methyl)-3-cyclopropyl-6,7-dihydro-4H-[1,2,3]triazolo[5,1-c][1,4]oxazine. 1H NMR (500 MHz, DMSO-d6) δ 13.62 (s, 1H), 8.45 (s, 1H), 8.27 (s, 1H), 8.17 (s, 1H), 7.28 (d, J=8.1 Hz, 2H), 7.07 (d, J=8.0 Hz, 2H), 4.98 (d, J=15.0 Hz, 1H), 4.94-4.88 (m, 2H), 4.50 (t, J=8.6 Hz, 1H), 4.43 (dd, J=10.6, 4.1 Hz, 1H), 4.22-4.11 (m, 2H), 1.84 (p, J=6.6 Hz, 1H), 0.87 (d, J=8.5 Hz, 2H), 0.81-0.74 (m, 2H). LCMS Rt=0.75 min, m/z=476.3 (M+H).
Step 1: To a 40 mL vial was added 3-cyclopropylprop-2-yn-1-ol (525 mg, 5.46 mmol) and dry 1,2-dimethoxyethane (10 mL). The vial was purged with N2, then NaH (79 mg, 3.27 mmol) was added in one portion, and the mixture stirred at RT for 15 min. 2-((4-bromophenoxy)methyl)oxirane (500 mg, 2.183 mmol) was added, and the reaction was heated to 50° C. for 6 hours. More 3-cyclopropylprop-2-yn-1-ol (105 mg, 1.091 mmol) and NaH (44 mg, 1.09 mmol) were added, and the reaction continued at 50° C. for another 16 hours. The reaction was quenched with AcOH and filtered. To this crude material was added trityl chloride (1.34 g, 4.80 mmol) and triethylamine (2 mL, 14.4 mmol), and the reaction stirred at RT for 3 hours. The crude was then filtered, concentrated, and purified via silica gel chromatography (ISCO, 0 to 30% ethyl acetate/heptane) to give 1-(4-bromophenoxy)-3-((3-cyclopropylprop-2-yn-1-yl)oxy)propan-2-ol, which also contained equal amounts of 3-cyclopropylprop-2-yn-1-ol. The mixture was used in the next step without further purification. LCMS t=0.90 min, m/z=325.4, 327.4 (M+H).
Step 2: To 1-(4-bromophenoxy)-3-((3-cyclopropylprop-2-yn-1-yl)oxy)propan-2-ol (584 mg, 1.73 mmol, 50% purity) in dry DCM (8 mL) was added triethylamine (0.691 mL, 5.20 mmol), followed by dropwise addition of methanesulfonyl chloride (0.404 mL, 5.20 mmol). The reaction was then continued at RT for 30 min. The crude was then directly purified via silica gel chromatography (ISCO, 0 to 30% ethyl acetate/heptane) to give 1-(4-bromophenoxy)-3-((3-cyclopropylprop-2-yn-1-yl)oxy)propan-2-yl methanesulfonate, which contained 30% of an inseparable impurity. The mixture was used in the next step without further purification. LCMS Rt=1.04 min, m/z=403.1, 405.1 (M+H).
Step 3: To a 100 mL flask was added give 1-(4-bromophenoxy)-3-((3-cyclopropylprop-2-yn-1-yl)oxy)propan-2-yl methanesulfonate (515 mg, 1.28 mmol, 70% purity), dry DMSO (10 mL), and sodium azide (208 mg, 3.19 mmol). The reaction was stirred at RT for 16 hours, then heated to 80° C. for 1 hour, and finally heated to 100° C. for 4 hours. The reaction was quenched with excess triphenylphosphine and diluted with water, then stirred at RT for 15 min. The crude was extracted with EtOAc three times, washed with water and brine, dried over sodium sulfate, and concentrated. It was purified via silica gel chromatography (ISCO, 0 to 50% ethyl acetate/heptane) to give 7-((4-bromophenoxy)methyl)-3-cyclopropyl-6,7-dihydro-4H-[1,2,3]triazolo[5,1-c][1,4]oxazine. LCMS Rt=0.90 min, m/z=350.2 352.2 (M+H).
5-(4-((6-(2-methoxypropan-2-yl)-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (382) was obtained using the procedure described for Example 348, except 2-((4-bromophenoxy)methyl)-6-(difluoromethyl)-1,4-dioxane was replaced with 2-((4-bromophenoxy)methyl)-6-(2-methoxypropan-2-yl)-1,4-dioxane. LCMS Rt=0.77 min, m/z=471.3 (M+H2O).
Step 1: To a 200 mL flask was added 6-((4-bromophenoxy)methyl)-1,4-dioxane-2-carboxylic acid (756 mg, 2.384 mmol) and dry MeOH (20 mL). Then TMS-diazomethane (7 mL, 14.00 mmol) was added dropwise until bubbling had ceased. The reaction was then continued at RT for 1 hour and then quenched by dropwise addition of acetic acid until bubbling had ceased. The mixture was concentrated and the crude product purified via silica gel chromatography (ISCO, 0 to 40% ethyl acetate/heptane) to give methyl 6-((4-bromophenoxy)methyl)-1,4-dioxane-2-carboxylate. LCMS Rt=0.89 min, m/z=330.9, 332.9 (M+H).
Step 2: To a 100 mL flask was added methyl 6-((4-bromophenoxy)methyl)-1,4-dioxane-2-carboxylate (260 mg, 0.785 mmol) and dry THF (7 mL). The mixture was cooled to 0° C., then a 3M solution of methylmagnesium bromide (0.785 mL, 2.35 mmol) in diethyl ether was added dropwise. The reaction was warmed to RT and stirred for 1 hour. The reaction was quenched at 0° C. with sat. NH4Cl, extracted with EtOAc twice, dried over sodium sulfate, and concentrated to give crude 2-(6-((4-bromophenoxy)methyl)-1,4-dioxan-2-yl)propan-2-ol which was used in the next step without further purification. LCMS Rt=0.78 min, m/z=313.2, 315.2 (M−H2O).
Step 3: To a 5 mL microwave vial was added 2-(6-((4-bromophenoxy)methyl)-1,4-dioxan-2-yl)propan-2-ol (140 mg, 0.423 mmol) and dry DMF (3 mL). Dry NaH (32 mg, 1.27 mmol) was added in one portion at RT and stirred for 15 min. Then iodomethane (0.079 ml, 1.27 mmol) was added and the reaction continued at RT for 1 hour. The reaction was quenched with sat. NH4Cl, extracted with EtOAc twice. The combined organic layers were washed with water, dried over sodium sulfate, and concentrated to give crude product which was purified via silica gel chromatography (ISCO, 0 to 30% ethyl acetate/heptane) to give 2-((4-bromophenoxy)methyl)-6-(2-methoxypropan-2-yl)-1,4-dioxane. LCMS Rt=0.92 min, m/z=313.3, 315.3 (M-CH3OH).
5-(4-((6-(3-fluoropentan-3-yl)-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (383) was obtained using the procedure described for Example 348, except 2-((4-bromophenoxy)methyl)-6-(difluoromethyl)-1,4-dioxane was replaced with 2-((4-bromophenoxy)methyl)-6-(3-fluoropentan-3-yl)-1,4-dioxane. LCMS Rt=4.30, 4.31 min, m/z=487.3 (M+H).
Step 1: An oven-dried 5 mL microwave vial was cooled under N2, and to it was added dry THF (3 mL), and titanium(IV) isopropoxide (0.085 mL, 0.287 mmol). Then methylmagnesium bromide (3M solution in diethyl ether, 0.15 mL, 0.45 mmol) was added dropwise at RT. The reaction was cooled to 0° C., and methyl 6-((4-bromophenoxy)methyl)-1,4-dioxane-2-carboxylate (95 mg, 0.287 mmol) was added, followed by dropwise addition of ethylmagnesium bromide (1M solution in THF, 0.46 mL, 0.46 mmol) over 2 minutes. The reaction was warmed to RT and stirred for 1 hour. Then it was quenched with sat. NH4Cl and stirred for 5 min, then filtered, extracted with EtOAc twice, dried over sodium sulfate, and concentrated. The crude was then purified via silica gel chromatography (ISCO, 0 to 100% ethyl acetate/heptane) to give 3-(6-((4-bromophenoxy)methyl)-1,4-dioxan-2-yl)pentan-3-ol. LCMS Rt=0.89 min, m/z=341.4, 341.3 (M−H2O).
Step 2: A 50 mL flask with give 3-(6-((4-bromophenoxy)methyl)-1,4-dioxan-2-yl)pentan-3-ol (62.7 mg, 0.175 mmol) in dry DCM (2 mL) was cooled to −78° C. under a nitrogen atmosphere. To it was added diethylaminosulfur trifluoride (0.046 mL, 0.349 mmol) at −78° C., and the reaction continued at −78° C. for 2 hours. The reaction was quenched with sat. NaHCO3 at −78° C., then allowed to warm to RT overnight. The reaction was extracted with DCM, dried over sodium sulfate, and concentrated. The crude was then purified via silica gel chromatography (ISCO, 0 to 100% ethyl acetate/heptane) to give 2-((4-bromophenoxy)methyl)-6-(3-fluoropentan-3-yl)-1,4-dioxane. LCMS Rt=1.04 min, m/z=341.3, 343.3 (M−HF).
Step 1: To a 40 mL vial with a stirbar was added 5-bromo-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (1500 mg, 5.26 mmol), (4-fluorophenyl)boronic acid (810 mg, 5.79 mmol) and Pd(dtBupf)Cl2 (68.6 mg, 0.105 mmol). The vial was sealed with a septa-top cap and purged with vac/N2 (×3). TPGS-750 2 w % (17.5 mL) was added followed by triethylamine (3.7 mL, 26.3 mmol). The reaction was warmed to 50° C. and stirred vigorously. The reaction mixture was acidified with 2M KHSO4, diluted with H2O and filtered through glass wool. The product was removed from the wool using MeOH and the eluent concentrated. The resultant solid was suspended in DCM, filtered, washed with Et2O and dried under vacuum to give 5-(4-fluorophenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide which was used without further purification.
Step 2: To an oven dried 4 mL vial with a stirbar was added 5-(4-fluorophenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (40 mg, 0.133 mmol), potassium tert-butoxide (44.9 mg, 0.400 mmol) and (6-(((tert-butyldiphenylsilyl)oxy)methyl)-1,4-dioxan-2-yl)methanol (77 mg, 0.200 mmol). The vial was sealed with a septa-top cap and purged with vac/N2 (×3). Sulfolane (266 μL) was added and the reaction was heated to 85° C. and stirred for 96 h. The reaction was diluted with Et2O, the layers separated and the organic layer washed with water, then brine, dried over Na2SO4, filtered and concentrated to give 5-(4-((6-(hydroxymethyl)-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (383). LCMS t=0.59 min, m/z=429.2 [M+H]. 1H NMR (500 MHz, DMSO-d6) δ 13.63 (br. s, 1H), 8.46 (br. s, 1H), 8.28 (s, 1H), 8.17 (br. s, 1H), 7.27 (d, J=8.3 Hz, 2H), 7.11-6.95 (m, 2H), 4.73 (br. s, 1H), 4.17 (ddd, J=30.2, 10.1, 5.9 Hz, 2H), 4.07-4.01 (m, 1H), 3.78-3.67 (m, 3H), 3.62 (dd, J=11.7, 4.9 Hz, 1H), 3.55-3.46 (m, 4H).
Step 1: To an oven-dried 1 L 3-necked flask with a stirbar and an internal thermometer was added sodium tert-butoxide (11.87 g, 124 mmol) and the vessel was purged with vac/N2×3. Anhydrous THF (475 mL) was added and the reaction was cooled to 5° C. in an ice bath. (2,2-dimethyl-1,3-dioxolan-4-yl)methanol (11.8 mL, 95 mmol) was added dropwise over 5 mins, during which time the internal temperature rose to 8° C. The reaction was stirred for 10 mins and allyl bromide (10.7 mL, 124 mmol) was added dropwise. The reaction was then warmed to rt and stirred for 3.5 h. The reaction mixture was poured into water and extracted into EA (25 mL×3). The combined organic layers were washed with brine, dried over Na2SO4, filtered and concentrated in vacuo to give 4-((allyloxy)methyl)-2,2-dimethyl-1,3-dioxolane which was used without further purification.
Step 2: To a 250 mL flask with a stirbar was added 4-((allyloxy)methyl)-2,2-dimethyl-1,3-dioxolane (16.4 g, 95 mmol) and 2N HCl (50 mL). A reflux condenser was added and the reaction was heated to 50° C. and stirred vigorously overnight. The reaction was concentrated in vacuo and azeotroped with benzene multiple times to remove all water and obtain 3-(allyloxy)propane-1,2-diol. 1H NMR (500 MHz, Chloroform-d) δ 5.97-5.81 (m, 1H), 5.28 (d, J=17.5 Hz, 1H), 5.21 (d, J=10.2 Hz, 1H), 4.02 (d, J=5.7 Hz, 2H), 3.88 (p, J=5.2 Hz, 1H), 3.72 (dd, J=11.4, 3.9 Hz, 1H), 3.67-3.61 (m, 1H), 3.58-3.47 (m, 2H), 2.38 (br. s, 2H).
Step 3: To an oven dried 250 mL flask with a stirbar was added 3-(allyloxy)propane-1,2-diol (11.16 g, 84.0 mmol) and imidazole (13.8 g, 203 mmol). The flask was purged with vac/N2×3 and DMF (94 mL) was added before cooling the reaction to 0° C. in an ice bath. Tert-butyldiphenylsilyl chloride (23.9 mL, 93 mmol) was then added dropwise over 15 mins and the reaction was warmed to rt and stirred for 2 h. The reaction was diluted with heptane (1.5 L) and the solution was washed with 1:1 water/brine×2. The organic layer was dried over Na2SO4, filtered and concentrated to in vacuo to give 1-(allyloxy)-3-((tert-butyldiphenylsilyl)oxy)propan-2-ol. LCMS t=1.20 min, m/z=393.3 [M+Na].
Step 4: To a 40 mL vial with a stirbar was added 1-(allyloxy)-3-((tert-butyldiphenylsilyl)oxy)propan-2-ol (5.00 g, 13.49 mmol), DCM (27.0 mL) and mCPBA (77 w %, 4.23 g, 18.89 mmol) and the reaction stirred at rt for 2 h. Saturated Na2S2O3a was added and the reaction stirred vigorously for 5 mins. The reaction was diluted with Et2O and washed with Na2S2O38, NaHCO3(aq)×2, brine and then dried over Na2SO4, filtered and concentrated in vacuo to give 1-((tert-butyldiphenylsilyl)oxy)-3-(oxiran-2-ylmethoxy)propan-2-ol which was used without further purification. LCMS t=1.09 min, m/z=409.3 [M+Na]
Step 5: To an oven dried 100 ml RBF with a stirbar was 1-((tert-butyldiphenylsilyl)oxy)-3-(oxiran-2-ylmethoxy)propan-2-ol (1300 mg, 3.36 mmol), DCM (67.3 mL) and TFA (130 μl, 1.68 mmol); the reaction was stirred at rt overnight. Additional TFA (130 μl, 1.62 mmol) was added and the reaction stirred for 5 h. 15% NaOH was added to basify the reaction and the inhomogeneous mixture stirred vigorously. After 30 the reaction was diluted with Et2O, the layers separated and the organic layer washed with water, then brine, dried over Na2SO4 and filtered. SiO2 was added to the eluent, which was then concentrated in vacuo. The resultant solid was then loaded onto a plug of SiO2 and washed with heptane. The product was eluted by washing with 1:1 EA/heptane and concentrated to give (6-(((tert-butyldiphenylsilyl)oxy)methyl)-1,4-dioxan-2-yl)methanol. LCMS t=1.09 min, 1.10 min, m/z=427.2 [M+H2O+Na].
Step 1: To an 8 mL vial was added 5-(4-((6-(hydroxymethyl)-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (383) (86 mg, 0.20 mmol) and Dess-Martin Periodinane (102 mg, 0.241 mmol). THF (1.0 mL) and DCM (1.0 mL) were added and the reaction agitated vigorously to give a homogenous solution which was stirred at rt. after 30 mins. The reaction was quenched by addition of a drop of MeOH. After stirring for 5 mins, the reaction was concentrated in vacuo, then suspended in DCM and filtered using a syringe filter. The eluent was concentrated to give 5-(4-((6-formyl-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide which was used without further purification. LCMS t=0.61 min, m/z=427.4 [M+H].
Step 2: To a 1 mL vial with stirbar was added 3-fluoroazetidine hydrochloride (8.4 mg, 0.075 mmol) and a solution of 5-(4-((6-formyl-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (21.3 mg, 0.05 mmol) in DCM (417 μl) and AcOH (83 μl). The reaction was stirred for 10 mins and NaBH(OAc)3 (31.8 mg, 0.15 mmol) was then added, giving a suspension which was stirred overnight. Purification by reverse phase HPLC followed by lyophilization gave 5-(4-((6-((3-fluoroazetidin-1-yl)methyl)-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (385) as a racemic mixture of diastereomers. LCMS t=0.61 min, m/z=486.4 [M+H].
5-(4-((6-((3,3-difluoroazetidin-1-yl)methyl)-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (386) was obtained using the method described for the synthesis of 5-(4-((6-((3-fluoroazetidin-1-yl)methyl)-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (385), except 3-fluoroazetidine hydrochloride was replaced with 3,3-difluoroazetidine. LCMS t=0.62 min, m/z=504.3 [M+H].
5-(4-((6-((3-methoxyazetidin-1-yl)methyl)-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (387) was obtained using the method described for the synthesis of 5-(4-((6-((3-fluoroazetidin-1-yl)methyl-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (385), except 3-fluoroazetidine hydrochloride was replaced with 3-methoxyazetidine LCMS t=0.62, m/z=498.4 [M+H].
5-(4-((2-fluoro-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (388) was obtained using the procedure described for Example 348, except 2-((4-bromophenoxy)methyl)-6-(difluoromethyl)-1,4-dioxane was replaced with 2-((4-bromophenoxy)methyl)-2-fluoro-1,4-dioxane. 1H NMR (400 MHz, DMSO-d6) δ=9.08 (br s, 1H), 8.55 (s, 1H), 7.24 (d, J=8.4 Hz, 2H), 6.98 (d, J=8.8 Hz, 2H), 5.98 (br s, 1H), 4.39-4.26 (m, 1H), 4.18-3.97 (m, 3H), 3.94-3.65 (m, 4H). LCMS: Rt=0.74 min, m/z=417.0 (M+H).
Step 1: To a solution of 2-((tert-butyldimethylsilyl)oxy)ethan-1-ol (61.5 g, 349.3 mmol) was added NaH (5.6 g, 140 mmol) in portions at 5° C. The mixture was stirred at 25° C. for 0.5 h. Then 2-((4-bromophenoxy)methyl)oxirane (16 g, 69.8 mmol) was added to the mixture at 25° C. and the mixture was stirred at 70° C. for 11.5 hrs. The mixture was washed with H2O (200 mL) and extracted with EA (200 mL×3). The combined organic layer was washed with brine, dried over Na2SO4, filtered and concentrated. The residue was purified by column chromatography (PE/EA=10/1) to give 1-(4-bromophenoxy)-3-(2-((tert-butyldimethylsilyloxy)ethoxy)propan-2-ol. 1H NMR (400 MHz, CDCl3) δ 7.43-7.33 (m, 2H), 6.86-6.74 (m, 2H), 4.20-4.09 (m, 1H), 4.01-3.98 (m, 2H), 3.81-3.76 (m, 2H), 3.74-3.60 (m, 4H), 2.91 (br s, 1H), 0.87 (s, 9H), 0.11 (s, 6H).
Step 2: A solution of 1-(4-bromophenoxy)-3-(2-((tert-butyldimethylsilyl)oxy)ethoxy)propan-2-ol (6.5 g, 16.03 mmol) in DCM (100 mL) was added Dess-Martin periodane (10.2 g, 24.05 mmol) at 0° C. The mixture was stirred 25° C. for 12 hrs. The residue was purified by column (PE) directly to give 1-(4-bromophenoxy)-3-(2-((tert-butyldimethylsilyl)oxy)ethoxy)propan-2-one. LCMS: Rt=1.208 min, [M+H]+=403.2. 1H NMR (400 MHz, CDCl3) δ 7.46-7.34 (m, 2H), 6.86-6.74 (m, 2H), 4.81 (s, 2H), 4.40 (s, 2H), 3.88-3.78 (m, 2H), 3.71-3.59 (m, 2H), 0.91 (s, 9H), 0.08 (s, 6H).
Step 3: To a solution of 1-(4-bromophenoxy)-3-(2-((tert-butyldimethylsilyl)oxy)ethoxy)propan-2-one (5.5 g, 13.65 mmol) in THF (55 mL) was added TBAF (27.3 mL, 27.3 mmol) at 25° C. The mixture was stirred 25° C. for 12 hrs. The mixture was concentrated. The residue was purified by column (PE/EA=2/1) to give 2-((4-bromophenoxy)methyl)-1,4-dioxan-2-ol. 1H NMR (400 MHz, CDCl3) δ 7.39 (d, J=9.0 Hz, 2H), 6.83 (d, J=9.0 Hz, 2H), 4.25 (m, 1H), 4.01-3.62 (m, 7H), 3.50 (br s, 1H).
Step 4: To a solution of 2-((4-bromophenoxy)methyl)-1,4-dioxan-2-ol (150 mg, 0.519 mmol) in DCM (2 mL) was added DAST (279 mg, 2.595 mmol) at −20° C. Then the mixture was stirred at −20° C. for 1 h. The mixture was diluted with ethanol (10 mL) and quenched with NaHCO3 until the pH=8, then the mixture was filtered The filtrate was concentrated in vacuo and the residue purified with Prep-TLC (PE:EA=3:1) to give 2-((4-bromophenoxy)methyl)-2-fluoro-1,4-dioxane. TLC: PE/EA=3:1, Rf=0.8. 1H NMR (400 MHz, CHLOROFORM-d) δ=7.45-7.33 (m, 2H), 6.89-6.76 (m, 2H), 4.35-4.25 (m, 1H), 4.13-4.04 (m, 1H), 4.03-3.91 (m, 2H), 3.90-3.64 (m, 4H), 3.31-3.10 (m, 1H). 19F NMR (376 MHz, CHLOROFORM-d) δ=−122.76-−128.13 (m, 1F).
5-(4-((1,4-dioxan-2-yl)difluoromethoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (389) was obtained using the procedure described for Example 348, except 2-((4-bromophenoxy)methyl)-6-(difluoromethyl)-1,4-dioxane was replaced with 2-((4-bromophenoxy)difluoromethyl)-1,4-dioxane. 1H NMR (400 MHz, DMSO+D2O) δ=8.18 (s, 1H), 8.00 (s, 1H), 7.54 (d, J=8.0 Hz, 2H), 7.37 (d, J=8.0 Hz, 2H), 3.68-3.53 (m, 5H), 3.49-3.37 (m, 2H), 3.27-3.18 (m, 1H), 2.33 (s, 2H). LCMS: Rt=0.76 min, m/z=433.1 (M+H).
Step 1: To a mixture of 1,4-dioxane-2-carboxylic acid (1 g, 7.57 mmol), 4-bromophenol (1.44 g, 8.33 mmol) was added DCC (1.56 g, 7.57 mmol in EA (40 mL). The reaction was stirred at 20° C. for 24 h. The reaction mixture was filtered and concentrated in vacuo. The residue was purified by silica gel column chromatography (PE:EA=20:1 to 10:1) to give 4-bromophenyl 1,4-dioxane-2-carboxylate. TLC: (PE:EA=5:1, Rf=0.4). 1H NMR (400 MHz, CHLOROFORM-d) δ=7.54-7.48 (m, 2H), 7.04-6.98 (m, 2H), 4.49 (dd, J=3.3, 7.8 Hz, 1H), 4.17-4.04 (m, 3H), 3.93-3.69 (m, 5H).
Step 2: SF4 was bubbled into the autoclave containing 0.6 g of 4-bromophenyl 1,4-dioxane-2-carboxylate at −70° C. for 1 min. Then the autoclave was stirred at 90° C. for 3 day. TLC (PE:EA=5:1, Rf=0.4) showed SM was remaining and a new spot (Rf=0.5) was formed. The mixture was concentrated in vacuo. The residue was purified by column chromatography over silica gel (eluent: PE:EA=5:1) to give 2-((4-bromophenoxy)difluoromethyl)-1,4-dioxane. TLC: (PE:EA=5:1, Rf=0.5). 1H NMR (400 MHz, CHLOROFORM-d) δ=7.50-7.44 (m, 2H), 7.08 (d, J=8.9 Hz, 2H), 4.09-3.66 (m, 8H).
5-(4-((cis-7,7-difluoro-2,5-dioxabicyclo[4.1.0]heptan-3-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (390) was obtained using the procedure described for Example 348, except 2-((4-bromophenoxy)methyl)-6-(difluoromethyl)-1,4-dioxane was replaced with cis-3-((4-bromophenoxy)methyl)-7,7-difluoro-2,5-dioxabicyclo[4.1.0]heptane. LCMS t=0.79, m/z=447.5 [M+H].
Step 1: To an oven-dried 40 mL vial with a stirbar was added sodium hydride (60% in mineral oil, 262 mg, 6.55 mmol). The vial was sealed with a septa-top cap and purged with vac/N2 (×3). DME (19 mL) was added, followed by dropwise addition of 2,2-dimethoxyethanol (1158 mg, 10.9 mmol). The reaction was stirred for 20 mins forming a white suspension to which was added 2-((4-bromophenoxy)methyl)oxirane (1000 mg, 4.37 mmol) in a single portion. The reaction was heated to 50° C. and the solution stirred overnight. The reaction mixture was stirred at 50° C. for a further 24 h. The reaction was quenched with MeOH and the mixture filtered through a plug of SiO2 with EA to give 1-(4-bromophenoxy)-3-(2,2-dimethoxyethoxy)propan-2-ol which was used without further purification. LCMS t=0.80, m/z=357.2, 359.2 [M+Na].
Step 2: To a 4 mL vial with a stirbar was added 1-(4-bromophenoxy)-3-(2,2-dimethoxyethoxy)propan-2-ol (1.26 g, 3.76 mmol), DCM (15.7 ml) and TFA (3.13 ml). The reaction was stirred at rt for 15 min. The reaction was concentrated in vacuo to give 2-((4-bromophenoxy)methyl)-6-methoxy-1,4-dioxane which was used without further purification. LCMS t=0.89, 0.92 m/z=271.1, 273.1 [M−MeO].
Step 3: To a 20 mL vial with a stirbar was added 2-((4-bromophenoxy)methyl)-6-methoxy-1,4-dioxane (1140 mg, 3.76 mmol). The vial was sealed with a septa-top cap and purged with vac/N2 (×3). MeCN (37.6 mL) was added, followed by TMSI (3.1 mL, 22.6 mmol) and the mixture stirred at rt for 30 min. HMDS (11.8 mL, 56.4 mmol) was added and the reaction stirred at rt for 15 mins. The reaction was quenched by the addition of NaHCO3(aq). The resulting mixture was extracted into EA×3, dried over Na2SO4, filtered and concentrated in vacuo to yield 2-((4-bromophenoxy)methyl)-2,3-dihydro-1,4-dioxine. LCMS t=0.98, m/z=271.1, 273.1 [M+H].
Step 4: To a 5 mL oven dried MW vial with a stirbar was added 2-((4-bromophenoxy)methyl)-2,3-dihydro-1,4-dioxine (50 mg, 0.184 mmol) and TBAB (1.8 mg, 5.5 μmol). The vial was sealed and purged with vac/N2 (×3). Toluene (0.74 mL) and (bromodifluoromethyl)trimethylsilane (43 μl, 0.28 mmol) were added and the reaction heated to 110° C. and stirred for 4 h. An additional equivalent of (bromodifluoromethyl)trimethylsilane was added and the reaction heated to 100° C. for 3 h. The reaction was concentrated in vacuo and purified by silica gel chromatography (ISCO, 0-30% EA/Hept) to give cis-3-((4-bromophenoxy)methyl)-7,7-difluoro-2,5-dioxabicyclo[4.1.0]heptane and trans-3-((4-bromophenoxy)methyl)-7,7-difluoro-2,5-dioxabicyclo[4.1.0]heptane. LCMS t=1.03, m/z=321.1, 323.1 [M+H].
5-(4-((trans-7,7-difluoro-2,5-dioxabicyclo[4.1.0]heptan-3-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (391) was obtained using the procedure described for Example 348, except 2-((4-bromophenoxy)methyl)-6-(difluoromethyl)-1,4-dioxane was replaced with trans-3-((4-bromophenoxy)methyl)-7,7-difluoro-2,5-dioxabicyclo[4.1.0]heptane. LCMS t=0.81, m/z=447.5 [M+H]. 1H NMR (500 MHz, DMSO-d6) δ 13.63 (br. s, 1H), 8.46 (br. s, 1H), 8.28 (s, 1H), 8.18 (br. s, 1H), 7.33-7.21 (m, 2H), 7.10-7.01 (m, 2H), 4.17-4.02 (m, 5H), 3.91 (dd, J=11.6, 2.7 Hz, 1H), 3.65-3.51 (m, 1H).
5-(4-((6-methoxy-5-methyl-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (peak 1) (392) was obtained using the procedure described for Example 348, except 2-((4-bromophenoxy)methyl)-6-(difluoromethyl)-1,4-dioxane was replaced with 5-((4-bromophenoxy)methyl)-3-(methoxymethyl)-2-methyl-1,4-dioxane. Purification by reverse phase HPLC gave a racemic single diastereomer of undefined stereochemistry. LCMS t=0.77, m/z=457.4 [M+H]. Peak 1: 1H NMR (500 MHz, DMSO-d6) δ 13.65 (br. s, 1H), 8.46 (br. s, 1H), 8.27 (s, 1H), 8.17 (br. s, 1H), 7.33-7.17 (m, 2H), 7.11-6.96 (m, 2H), 4.07-3.97 (m, 2H), 3.97-3.90 (m, 2H), 3.78 (qd, J=6.6, 3.0, 1H), 3.64 (t, J=11.2 Hz, 1H), 3.57 (dd, J=11.7, 3.3 Hz, 1H), 3.25 (s, 3H), 3.25-3.21 (m, 2H), 1.15 (d, J=6.7 Hz, 3H).
Step 1: To an oven dried 8 mL vial with a stirbar was added 2-((4-bromophenoxy)methyl)oxirane (250 mg, 1.09 mmol). The vial was sealed with a septa-top cap and purged with vac/N2 (×3). DCM (5.5 mL) was added, followed by but-3-en-2-ol (142 μL, 1.64 mmol). BF3·OEt2 (28 μl, 0.22 mmol) was added dropwise at rt and the reaction was stirred at rt for 1.5 h. Solid K2CO3 and MeOH were added and the reaction was stirred for 5 mins before filtering through a plug of SiO2 with EA. The eluent was concentrated in vacuo and purified by silica gel chromatography (ISCO, 0-60% EA/heptane) to give 1-(4-bromophenoxy)-3-(but-3-en-2-yloxy)propan-2-ol. LCMS t=0.96 min, m/z=301.1, 303.2 [M+H].
Step 2: To a 4 mL vial with a stirbar was added 1-(4-bromophenoxy)-3-(but-3-en-2-yloxy)propan-2-ol (162 mg, 0.54 mmol), DCM (1.35 mL) and mCPBA (77 w %, 157 mg, 0.70 mmol) and the reaction stirred overnight at rt. Na2S2O3(aq) was added and the reaction stirred vigorously for 5 mins. The reaction was diluted with Et2O, washed sequentially with Na2S2O3(aq), then NaHCO3(aq) ((×2), brine, dried over Na2SO4, filtered through a plug of SiO2 and concentrated in vacuo to give 1-(4-bromophenoxy)-3-(1-(oxiran-2-yl)ethoxy)propan-2-ol which was used without further purification. LCMS t=0.81, 0.82 min, m/z=319.2 [M+H].
Step 3: To an oven-dried 20 mL vial with a stirbar was added 1-(4-bromophenoxy)-3-(1-(oxiran-2-yl)ethoxy)propan-2-ol (144 mg, 0.45 mmol). The vial was sealed with a septa-top cap and purged with vac/N2 (×3). DCM (9.1 mL) was added, followed by BF3—OEt2 (11.5 μl, 0.09 mmol) and the reaction was then stirred at rt overnight. The reaction was quenched by the addition of K2CO3 and MeOH and then filtered through a plug of SiO2 with EA. Purification by silica gel chromatography (ISCO, (0-50% EA/heptane) gave (6-((4-bromophenoxy)methyl)-3-methyl-1,4-dioxan-2-yl)methanol which slowly crystallised under high vacuum. LCMS t=0.78, 0.79 min, m/z=319.2 [M+H].
Step 4: To a 4 mL vial with a stirbar was added (6-((4-bromophenoxy)methyl)-3-methyl-1,4-dioxan-2-yl)methanol (66 mg, 0.21 mmol). The vial was placed under N2 and THF (1.0 mL) was added, followed by sodium hydride (60% in mineral oil, 12.5 mg, 0.31 mmol). The reaction was stirred for 15 mins before addition of iodomethane (65 μL, 1.04 mmol) and the reaction was then stirred at for 2 h. The reaction was quenched by addition of MeOH and filtered through a plug of SiO2 with Et2O. The eluent was concentrated in vacuo to give 5-((4-bromophenoxy)methyl)-3-(methoxymethyl)-2-methyl-1,4-dioxane which was used without further purification. LCMS t=0.94, 0.95 min, m/z=331.2, 333.2 [M+H].
5-(4-((6-methoxy-5-methyl-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (peak 2) (393) was obtained by reverse phase HPLC purification of the product of Example 392 as a racemic single diastereomer of undefined stereochemistry. Peak 2: 1H NMR (500 MHz, DMSO-d6) δ 13.64 (br. s, 1H), 8.46 (br. s, 1H), 8.28 (s, 1H), 8.17 (br. s, 1H), 7.26 (d, J=8.2 Hz, 2H), 7.03 (d, J=8.2 Hz, 2H), 4.08-3.94 (m, 3H), 3.92-3.86 (m, 1H), 3.81-3.74 (m, 2H), 3.71 (dd, J=10.5, 6.8 Hz, 1H), 3.57 (dd, J=10.5, 4.6 Hz, 1H), 3.48 (t, J=10.6 Hz, 1H), 3.29 (s, 3H), 1.04 (d, J=6.3 Hz, 3H).
5-(4-(((1S,3S,6R)-7,7-difluoro-1-methyl-2,5-dioxabicyclo[4.1.0]heptan-3-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (394) was obtained using step 1 in the synthesis of 5-(4-((6-(hydroxymethyl)-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (384), except (4-fluorophenyl)boronic acid was replaced with (1S,3S,6R)-3-((4-bromophenoxy)methyl)-7,7-difluoro-1-methyl-2,5-dioxabicyclo[4.1.0]heptane. LCMS: t=0.87, m/z=461.3 [M+H]. 1H NMR (500 MHz, DMSO-d6) δ 13.62 (br. s, 1H), 8.44 (br. s, 1H), 8.26 (s, 1H), 8.16 (br. s, 1H), 7.27 (d, J=8.7 Hz, 2H), 7.05 (d, J=8.7 Hz, 2H), 4.09 (d, J=2.3 Hz, 3H), 3.91-3.84 (m, 2H), 3.59-3.51 (m, 1H), 1.37 (t, J=2.2 Hz, 3H).
Step 1: To a 40 mL oven dried vial with a stirbar was added sodium hydride (60% in oil, 655 mg, 16.7 mmol) and the vial sealed with a septa top cap and purged with vac/N2 (×3). DME (24.3 mL) was added, followed by dropwise addition of propargyl alcohol (2.60 mL, 43.7 mmol. The reaction was stirred for 10 mins before the addition of (S)-2-((4-bromophenoxy)methyl)oxirane (2500 mg, 10.9 mmol. The reaction was then heated to 65° C. and stirred for 2.5 h. The reaction was quenched with MeOH and filtered through a plug of SiO2 with EA. Following concentration in vacuo, mineral oil was removed by filtering through a plug of SiO2 with heptane and the product was eluted with EA. The eluent was concentrated to give (S)-1-(4-bromophenoxy)-3-(prop-2-yn-1-yloxy)propan-2-ol. LCMS t=0.80, m/z=285.2, 287.2 [M+H].
Step 2: To an oven dried 40 mL vial was added platinum(II) chloride (0.070 g, 0.26 mmol) and (S)-1-(4-bromophenoxy)-3-(prop-2-yn-1-yloxy)propan-2-ol (1.50 g, 5.26 mmol) the reaction was sealed with a septa-top cap and purged with vac/N2 (×3). Acetonitrile (26.3 mL) was added and the suspension stirred at 70° C. for 5 h. An additional portion of platinum(II) chloride (0.070 g, 0.26 mmol) was added and the reaction was stirred at 70° C. overnight. The reaction was concentrated in vacuo and filtered through a plug of SiO2 with 15% EA/heptane. Concentration in vacuo gave (S)-2-((4-bromophenoxy)methyl)-6-methyl-2,3-dihydro-1,4-dioxine. LCMS t=1.01, m/z=285.2, 287.2 [M+H].
Step 3: To an oven-dried 20 ml MW vial with a stirbar was added (S)-2-((4-bromophenoxy)methyl)-6-methyl-2,3-dihydro-1,4-dioxine (700 mg, 2.45 mmol) and TBAB (23.7 mg, 0.074 mmol. The vial was sealed and purged with vac/N2 (×3). Toluene (12.3 ml) and (bromodifluoromethyl)trimethylsilane (1.14 ml, 7.36 mmol) were added and the reaction heated to 110° C. and stirred for 5 h. LCMS shows the formation of the desired mass t=1.03, m/z=335.2, 337.2 [M+H], with some SM remaining. An additional equivalent of carbene reagent was added and the reaction heated to 110° C. for 3 h. After cooling, the reaction was concentrated in vacuo and purified by silica gel chromatography (ISCO, 0-30% EA/Hept) to give two products: (1S,3S,6R)-3-((4-bromophenoxy)methyl)-7,7-difluoro-1-methyl-2,5-dioxabicyclo[4.1.0]heptane and (1R,3S,6S)-3-((4-bromophenoxy)methyl)-7,7-difluoro-1-methyl-2,5-dioxabicyclo[4.1.0]heptane.
55-(4-(((1R,3S,6S)-7,7-difluoro-1-methyl-2,5-dioxabicyclo[4.1.0]heptan-3-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (395) was obtained using the method described in Example 394, except (1S,3S,6R)-3-((4-bromophenoxy)methyl)-7,7-difluoro-1-methyl-2,5-dioxabicyclo[4.1.0]heptane was replaced with (1R,3S,6S)-3-((4-bromophenoxy)methyl)-7,7-difluoro-1-methyl-2,5-dioxabicyclo[4.1.0]heptane. LCMS: t=0.86, m/z=461.3 [M+H]. 1H NMR (500 MHz, DMSO-d6) δ 13.62 (br. s, 1H), 8.46 (br. s, 1H), 8.26 (s, 1H), 8.15 (br. s, 1H), 7.27 (d, J=8.6 Hz, 2H), 7.03 (d, J=8.6 Hz, 2H), 4.11-4.02 (m, 3H), 3.85-3.78 (m, 2H), 3.58 (ddd, J=10.7, 8.0, 2.3 Hz, 2H), 1.39 (t, J=2.2 Hz, 3H).
5-(4-(((1R,3R,6S)-7,7-difluoro-1-methyl-2,5-dioxabicyclo[4.1.0]heptan-3-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (396) was obtained using the method described in Example 394, except (1S,3S,6R)-3-((4-bromophenoxy)methyl)-7,7-difluoro-1-methyl-2,5-dioxabicyclo[4.1.0]heptane was replaced with (1R,3R,6S)-3-((4-bromophenoxy)methyl)-7,7-difluoro-1-methyl-2,5-dioxabicyclo[4.1.0]heptane. LCMS: t=0.87, m/z=461.3 [M+H]. 1H NMR (500 MHz, DMSO-d6) δ 13.62 (br. s, 1H), 8.44 (br. s, 1H), 8.26 (s, 1H), 8.16 (br. s, 1H), 7.27 (d, J=8.7 Hz, 2H), 7.05 (d, J=8.7 Hz, 2H), 4.09 (d, J=2.3 Hz, 3H), 3.91-3.84 (m, 2H), 3.59-3.51 (m, 1H), 1.37 (t, J=2.2 Hz, 3H).
(1R,3R,6S)-3-((4-bromophenoxy)methyl)-7,7-difluoro-1-methyl-2,5-dioxabicyclo[4.1.0]heptane was obtained using the method described for the synthesis of (1S,3S,6R)-3-((4-bromophenoxy)methyl)-7,7-difluoro-1-methyl-2,5-dioxabicyclo[4.1.0]heptane except (S)-2-((4-bromophenoxy)methyl)oxirane was replaced with. (R)-2-((4-bromophenoxy)methyl)oxirane.
5-(4-(((1S,3R,6R)-7,7-difluoro-1-methyl-2,5-dioxabicyclo[4.1.0]heptan-3-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (397) was obtained using the method described in Example 395, except (1R,3S,6S)-3-((4-bromophenoxy)methyl)-7,7-difluoro-1-methyl-2,5-dioxabicyclo[4.1.0]heptane was replaced with (1S,3R,6R)-3-((4-bromophenoxy)methyl)-7,7-difluoro-1-methyl-2,5-dioxabicyclo[4.1.0]heptane. LCMS: t=0.86, m/z=461.3 [M+H]. 1H NMR (500 MHz, DMSO-d6) δ 13.62 (br. s, 1H), 8.46 (br. s, 1H), 8.26 (s, 1H), 8.15 (br. s, 1H), 7.27 (d, J=8.6 Hz, 2H), 7.03 (d, J=8.6 Hz, 2H), 4.11-4.02 (m, 3H), 3.85-3.78 (m, 2H), 3.58 (ddd, J=10.7, 8.0, 2.3 Hz, 2H), 1.39 (t, J=2.2 Hz, 3H).
(1S,3R,6R)-3-((4-bromophenoxy)methyl)-7,7-difluoro-1-methyl-2,5-dioxabicyclo[4.1.0]heptane was obtained using the method described for the synthesis of (1R,3S,6S)-3-((4-bromophenoxy)methyl)-7,7-difluoro-1-methyl-2,5-dioxabicyclo[4.1.0]heptane, except (S)-2-((4-bromophenoxy)methyl)oxirane was replaced with. (R)-2-((4-bromophenoxy)methyl)oxirane.
5-(4-(((2S,6S)-6-(methoxymethyl)-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (398) was obtained by RP-HPLC from the product obtained using the procedure described for Example 348, except 2-((4-bromophenoxy)methyl)-6-(difluoromethyl)-1,4-dioxane was replaced with a mixture of (2S,6R)-2-((4-bromophenoxy)methyl)-6-(methoxymethyl)-1,4-dioxane and (2S,6S)-2-((4-bromophenoxy)methyl)-6-(methoxymethyl)-1,4-dioxane. 1H NMR (500 MHz, DMSO-d6) δ 13.65 (s, 1H), 8.48 (s, 1H), 8.29 (s, 1H), 8.19 (s, 1H), 7.29 (d, J=8.6 Hz, 2H), 7.05 (d, J=8.7 Hz, 2H), 4.07-4.00 (m, 2H), 4.00-3.94 (m, 1H), 3.87 (dd, J=11.3, 2.6 Hz, 1H), 3.81 (dtd, J=10.2, 4.9, 2.6 Hz, 1H), 3.76 (dd, J=11.4, 2.7 Hz, 1H), 3.39 (dd, J=10.7, 5.4 Hz, 1H), 3.35 (s, 1H), 3.33-3.31 (m, 1H), 3.30-3.24 (m, 4H). LCMS Rt=2.78 min, m/z=443.2 (M+H).
Step 1: To a 500 mL 3-necked flask was added (S)-epichlorohydrin (58.3 g, 630 mmol) and water (10 mL) and the mixture cooled to −5° C. and stirred vigorously. To a separate 250 mL flask was added 4-bromophenol (72.7 g, 420 mmol), benzyltrimethylammonium chloride (1.560 g, 8.40 mmol) and sodium hydroxide (16.80 g, 420 mmol) and water was added and the reaction mixture stirred until homogenous. This mixture was added over 20 mins to the cooled reaction mixture containing flask (S)-epichlorohydrin. The resulting mixture was stirred for 5.5 h at −5° C., warmed to rt and stirred overnight The reaction mixture was diluted with water and extracted into Et2O (×4). The organic layers were combined, washed with brine, dried over Na2SO4, filtered through a plug of SiO2, concentrated and the residual oil was crystallised in the freezer from MeOH/H2O (˜10%) to give the crystalline hydrate which decomposed to a biphasic liquid upon sitting, removal of the aqueous layer and azeotroping with benzene×2 followed by chilling in the freezer gave (S)-2-((4-bromophenoxy)methyl)oxirane.
Step 2: To a 500 mL flask was added dry DMF (170 ml) and allyl alcohol (29.7 mL, 437 mmol). The flask was cooled to 0° C. and put under a stream of N2, sodium hydride (3.4 g, 135 mmol) was added (2×1.7 g portions). The mixture was stirred at 0° C. until a homogeneous solution had formed (15 min), after which (S)-2-((4-bromophenoxy)methyl)oxirane (20 g, 87 mmol) was added. The mixture was then heated to 40° C. for 1 h. the mixture was quenched with saturated aqueous NH4Cl and stirred until gas evolution ceased. The mixture was diluted with (1 L) and extracted with EtOAc (2×200 mL). The organic layers were combined, washed with water and brine, dried over Na2SO4, filtered and concentrated to give (S)-1-(allyloxy)-3-(4-bromophenoxy)propan-2-ol which was used without further purification.
Step 3: To a 1 L flask was added (S)-1-(allyloxy)-3-(4-bromophenoxy)propan-2-ol (24.81 g, 86 mmol), dry DCM (200 ml) and 3-chloroperoxybenzoic acid (25.2 g, 112 mmol) and the reaction mixture stirred at rt for 17 h. The mixture was quenched with 10% (w/v) aqueous Na2SO3, stirred for 1 h and extracted with DCM. The organic layer was washed with saturated aq. NaHCO3 twice, dried over sodium sulfate and concentrated to give (2S)-1-(4-bromophenoxy)-3-(oxiran-2-ylmethoxy)propan-2-ol which was used directly without further purification. LCMS (t=0.66 min, m/z=303.2 [M+H]+).
Step 4: To a 2 L flask purged with N2 was added (2S)-1-(4-bromophenoxy)-3-(oxiran-2-ylmethoxy)propan-2-ol (24.88 g, 82 mmol) and dry DCM (1320 mL). Under a stream of N2, boron trifluoride etherate (2.080 mL, 16.41 mmol) was added, and the reaction stirred at rt under N2 for 2 h. The mixture was quenched with saturated aq. NaHCO3, stirred at rt for 10 min and extracted with DCM. The organic layers were combined, dried over sodium sulfate, and concentrated to give crude product. The crude product which was purified by CombiFlash (GOLD column running a gradient of 0 to 60% EtOAc/heptane over 5 minutes) to give diastereomers (1:1) ((2R,6S)-6-((4-bromophenoxy)methyl)-1,4-dioxan-2-yl)methanol and ((2S,6S)-6-((4-bromophenoxy)methyl)-1,4-dioxan-2-yl)methanol.
Step 5: To a 5 mL microwave vial was added (6S)-6-((4-bromophenoxy)methyl)-1,4-dioxan-2-yl)methanol (250 mg, 0.825 mmol), dry DMF (3 mL), and sodium hydride (62.5 mg, 2.474 mmol). The mixture was stirred at rt for 15 min, then iodomethane (0.16 mL, 2.56 mmol) was added, and the reaction continued at rt for 1 h. The reaction was quenched with aqueous NH4Cl, diluted with EtOAc and extracted with EtOAc twice. The organic layers were combined, washed with water and brine, dried over sodium sulfate, filtered and concentrated to give (2S,6R)-2-((4-bromophenoxy)methyl)-6-(methoxymethyl)-1,4-dioxane and (2S,6S)-2-((4-bromophenoxy)methyl)-6-(methoxymethyl)-1,4-dioxane.
5-(4-(((2S,6R)-6-(methoxymethyl)-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (399) was obtained by RP-HPLC of the mixture obtained in Example 398. 1H NMR (500 MHz, DMSO-d6) δ 13.68 (s, 1H), 8.48 (s, 1H), 8.29 (s, 1H), 8.19 (s, 1H), 7.29 (d, J=8.6 Hz, 2H), 7.07 (d, J=8.8 Hz, 2H), 4.22 (dd, J=10.2, 6.3 Hz, 1H), 4.17 (dd, J=10.2, 5.5 Hz, 1H), 4.08 (qd, J=5.5, 3.3 Hz, 1H), 3.95 (qd, J=5.9, 3.2 Hz, 1H), 3.75 (dd, J=11.7, 3.3 Hz, 1H), 3.71 (dd, J=11.6, 3.2 Hz, 1H), 3.64 (dd, J=11.7, 5.0 Hz, 1H), 3.53-3.42 (m, 3H), 3.29 (s, 3H). LCMS Rt=2.69 min, m/z=443.1 (M+H).
T5-(4-(((2R,6R)-6-(methoxymethyl)-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (cis, SFC peak 2) was made from the same procedure used to make example 397, except the mixture of (2S,6R)-2-((4-bromophenoxy)methyl)-6-(methoxymethyl)-1,4-dioxane and (2S,6S)-2-((4-bromophenoxy)methyl)-6-(methoxymethyl)-1,4-dioxane was replaced with a mixture of (2R,6R)-2-((4-bromophenoxy)methyl)-6-(methoxymethyl)-1,4-dioxane and (2R,6S)-2-((4-bromophenoxy)methyl)-6-(methoxymethyl)-1,4-dioxane. 1H NMR (500 MHz, DMSO-d6) δ=13.63 (s, 1H), 8.46 (s, 1H), 8.27 (s, 1H), 8.22-8.10 (m, 1H), 7.26 (d, J=8.0 Hz, 2H), 7.02 (d, J=8.0 Hz, 2H), 4.05-3.91 (m, 3H), 3.87-3.70 (m, 3H), 3.33-3.25 (m, 4H), 3.24 (s, 3H). LCMS Rt=0.72 min, m/z=443.2 (M+H). Chiral HPLC: Rt=3.75 min, ee value=100%.
(2R,6R)-2-((4-bromophenoxy)methyl)-6-(methoxymethyl)-1,4-dioxane and (2R,6S)-2-((4-bromophenoxy)methyl)-6-(methoxymethyl)-1,4-dioxane were obtained as described for the preparation of (2S,6S)-2-((4-bromophenoxy)methy-6-(methoxymethyl)-1,4-dioxane and (2S,6R)-2-((4-bromophenoxy)methy-6-(methoxymethyl)-1,4-dioxane, except (S)-epichlorohydrin was replaced with (R)-epichlorohydrin.
5-(4-(((2R,6S)-6-(methoxymethyl)-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (trans, SFC peak 1) (401) was obtained by chiral SFC of the mixture from Example 400. 1H NMR (500 MHz, DMSO-d6) δ=8.71-8.49 (s, 1H), 8.25 (s, 1H), 8.19-8.06 (m, 1H), 7.26 (d, J=8.0 Hz, 2H), 7.05 (d, J=8.0 Hz, 2H), 4.23-4.12 (m, 2H), 4.09-4.03 (m, 1H), 3.97-3.90 (m, 1H), 3.76-3.71 (m, 1H), 3.71-3.66 (m, 1H), 3.65-3.60 (m, 1H), 3.48-3.46 (m, 1H), 3.48-3.47 (m, 1H), 3.45-3.43 (m, 2H), 3.27 (s, 3H). LCMS Rt=0.70 min, m/z=443.3 (M+H). Chiral HPLC: Rt=3.37 min, ee value=100%.
5-(4-(((2S,6R)-6-(isopropoxymethyl)-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (402) was obtained using the procedure described for Example 348, except 2-((4-bromophenoxy)methyl)-6-(difluoromethyl)-1,4-dioxane was replaced with (2S)-2-((4-bromophenoxy)methyl)-6-(isopropoxymethyl)-1,4-dioxane. 1H NMR (500 MHz, DMSO-d6) δ 13.65 (s, 1H), 8.47 (s, 1H), 8.29 (s, 1H), 8.19 (s, 1H), 7.28 (d, J=8.7 Hz, 2H), 7.05 (d, J=8.8 Hz, 2H), 4.07-3.94 (m, 3H), 3.87 (dd, J=11.3, 2.6 Hz, 1H), 3.76 (tt, J=7.9, 2.6 Hz, 2H), 3.55 (hept, J=6.1 Hz, 1H), 3.42 (dd, J=10.4, 5.1 Hz, 1H), 3.33 (d, J=5.3 Hz, 2H), 3.26 (t, J=11.4 Hz, 1H), 1.09 (d, J=6.1 Hz, 6H). LCMS Rt=3.47 min, m/z=471.1 (M+H).
Step 1: To a stirring solution of ((6S)-6-((4-bromophenoxy)methyl)-1,4-dioxan-2-yl)methanol (1 g, 3.30 mmol) in dry DCM (20 mL) was added triethylamine (0.690 mL, 4.95 mmol, followed by dropwise addition of methanesulfonyl chloride (0.283 mL, 3.63 mmol. The reaction was then continued at RT for 30 min. The crude was purified via silica gel chromatography (ISCO, 0 to 100% ethyl acetate/heptane) to give ((6S)-6-((4-bromophenoxy)methyl)-1,4-dioxan-2-yl)methyl methanesulfonate. LCMS Rt=0.78 min, m/z=381.1, 383.2 (M+H).
Step 2: To a 20 ml microwave vial was added ((6S)-6-((4-bromophenoxy)methyl)-1,4-dioxan-2-yl)methyl methanesulfonate (400 mg, 1.049 mmol) and dry 2-propanol (10 mL). The mixture was sonicated to dissolve as much of the mesylate as possible, then sodium isopropoxide (517 mg, 6.30 mmol) was added. The suspension was heated to 70° C. with vigorous stirring for 8 hours. The crude was filtered, concentrated down, and purified via silica gel chromatography (ISCO, 0 to 30% ethyl acetate/heptane) to give (2S)-2-((4-bromophenoxy)methyl)-6-(isopropoxymethyl)-1,4-dioxane. LCMS Rt=0.90 min, m/z=343.4, 345.3 (M+H).
5-(4-(((2S,6S)-6-(isopropoxymethyl)-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (403) by RP-HPLC of the product from Example 402. 1H NMR (500 MHz, DMSO-d6) δ 13.65 (s, 1H), 8.48 (s, 1H), 8.29 (s, 1H), 8.18 (s, 1H), 7.29 (d, J=8.6 Hz, 2H), 7.07 (d, J=8.7 Hz, 2H), 4.19 (qd, J=10.3, 6.0 Hz, 2H), 4.10-4.05 (m, 1H), 3.88 (ddt, J=9.3, 6.0, 3.2 Hz, 1H), 3.76 (dd, J=11.7, 3.2 Hz, 1H), 3.71 (dd, J=11.6, 3.2 Hz, 1H), 3.63 (dd, J=11.7, 5.2 Hz, 1H), 3.62-3.52 (m, 1H), 3.54-3.47 (m, 3H), 1.10 (d, J=6.1 Hz, 6H). LCMS Rt=3.39 min, m/z=471.1 (M+H).
5-(4-(((2S,6S)-6-cyclopropyl-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (404) was obtained using the procedure described for Example 348, except 2-((4-bromophenoxy)methyl)-6-(difluoromethyl)-1,4-dioxane was replaced with (2S,6S)-2-((4-bromophenoxy)methyl)-6-cyclopropyl-1,4-dioxane. 1H NMR (500 MHz, DMSO-d6) δ 13.65 (s, 1H), 8.48 (s, 1H), 8.29 (s, 1H), 8.19 (s, 1H), 7.38-7.19 (m, 2H), 7.11-6.97 (m, 2H), 4.05 (dd, J=10.5, 5.4 Hz, 1H), 4.00 (dd, J=10.4, 4.4 Hz, 1H), 3.89 (ddd, J=10.4, 4.9, 2.8 Hz, 1H), 3.87-3.83 (m, 1H), 3.78 (dd, J=11.4, 2.6 Hz, 1H), 3.32 (d, J=9.8 Hz, 1H), 3.27 (d, J=11.0 Hz, 1H), 2.97 (ddd, J=10.5, 8.2, 2.6 Hz, 1H), 0.76 (qt, J=8.3, 4.9 Hz, 1H), 0.50-0.40 (m, 2H), 0.33 (dtd, J=9.0, 4.6, 2.8 Hz, 1H), 0.30-0.24 (m, 1H). LCMS Rt=0.75 min, m/z=439.3 (M+H).
Step 1: To a 500 mL flask was added NaH (1.66 g, 65.7 mmol) and dry DME (140 mL). Then (Z)-but-2-ene-1,4-diol (18 ml, 219 mmol) was added dropwise, and the mixture stirred at RT for 10 min. Then (S)-2-((4-bromophenoxy)methyl)oxirane (10 g, 43.7 mmol) was added, and the mixture heated to 70° C. for 2 hours. The reaction was quenched with sat. NH4Cl, concentrated, diluted with EtOAc, washed with water twice, then dried over sodium sulfate and concentrated. The crude product was purified via silica gel chromatography twice (ISCO, 0 to 100% ethyl acetate/heptane) to give (S,Z)-4-(3-(4-bromophenoxy)-2-hydroxypropoxy)but-2-en-1-ol. LCMS Rt=0.64 min, m/z=317.2, 319.2 (M+H).
Step 2: To a 500 mL flask was added (S,Z)-4-(3-(4-bromophenoxy)-2-hydroxypropoxy)but-2-en-1-ol (10.9 g, 34.5 mmol) and dry DCM (200 mL). The solution was cooled to −25° C. by means of an immersion chiller, and PdCl2(MeCN) (0.895 g, 3.45 mmol) was added. The reaction was then stirred at −25° C. for 88 hours. It was quenched with 1M aq. HCl, extracted with DCM, dried over sodium sulfate, and concentrated. The crude was then purified via silica gel chromatography four times (ISCO, 0 to 20% ethyl acetate/heptane) to separate diastereomers and give (2S,6S)-2-((4-bromophenoxy)methyl)-6-vinyl-1,4-dioxane. 1H NMR (500 MHz, CDCl3) δ 7.39 (d, J=9.0 Hz, 2H), 6.81 (d, J=9.0 Hz, 2H), 5.77 (ddd, J=17.1, 10.8, 5.9 Hz, 1H), 5.39 (dt, J=17.4, 1.5 Hz, 1H), 5.27 (dt, J=10.7, 1.4 Hz, 1H), 4.22 (dddt, J=10.2, 5.7, 2.8, 1.3 Hz, 1H), 4.11-4.03 (m, 2H), 3.96 (dd, J=11.4, 2.5 Hz, 1H), 3.91 (dd, J=9.4, 5.4 Hz, 1H), 3.79 (dd, J=11.5, 2.8 Hz, 1H), 3.45 (dd, J=11.4, 10.1 Hz, 1H), 3.31 (dd, J=11.6, 10.4 Hz, 1H).
Step 3: To a 250 mL flask was added give (2S,6S)-2-((4-bromophenoxy)methyl)-6-vinyl-1,4-dioxane (4.12 g, 13.8 mmol) and dry Et2O (70 mL). Then zinc-copper couple (14.41 g, 20 mmol) was added, followed by iodine (10.49 g, 41.3 mmol) and the reaction heated to 45° C. The reaction was stirred until the brown color of iodine had been discharged then diiodomethane (2.2 mL, 27.3 mmol was added, and the reaction continued at 45° C. for 2 hours. Additional diiodomethane (7 mL, 87 mmol) was then added via syringe pump over 6 hours, and the reaction stirred at 45° C. for 19 hours. More zinc-copper couple (3.60 g, 55.1 mmol) was added, and additional diiodomethane (7 mL, 87 mmol) was added via syringe pump over 6 hours. The reaction was stirred at 45° C. for another hour, then it was filtered, and quenched with 1M HCl. The crude was extracted with ether, washed with 10% (w/v) aqueous sodium sulfite, dried over sodium sulfate, and concentrated. The crude was then purified via silica gel chromatography twice (ISCO, 0 to 20% ethyl acetate/heptane) to give (2S,6S)-2-((4-bromophenoxy)methyl)-6-cyclopropyl-1,4-dioxane. LCMS Rt=0.88 min, m/z=313.3, 315.2 (M+H).
5-(4-(((2S,6S)-6-(methoxymethyl)-6-methyl-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (405) was obtained using the method described in steps 8-9 for the preparation of 5-(4-((3-cyclopropyl-6,7-dihydro-4H-[1,2,3]triazolo[5,1-c][1,4]oxazin-6-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (380), except 6-((4-bromophenoxy)methyl)-3-cyclopropyl-6,7-dihydro-4H-[1,2,3]triazolo[5,1-c][1,4]oxazine was replaced with (2S,6S)-6-((4-bromophenoxy)methyl)-2-(methoxymethyl)-2-methyl-1,4-dioxane. LCMS t=0.88 min, m/z=457.5 [M+H]. 1H NMR (500 MHz, DMSO-d6) δ 13.63 (br. s, 1H), 8.46 (br. s, 1H), 8.27 (s, 1H), 8.17 (br. s, 1H), 7.26 (d, J=8.4 Hz, 2H), 7.03 (d, J=8.4 Hz, 2H), 4.21-4.15 (m, 1H), 4.00-3.91 (m, 2H), 3.88 (dd, J=11.2, 2.8 Hz, 1H), 3.51 (d, J=11.2 Hz, 1H), 3.36 (d, J=11.2 Hz, 2H), 3.31-3.24 (m, 5H), 3.22 (s, 2H).
Step 1: To a 40 ml oven-dried vial with a stirbar was added sodium hydride (60% in mineral oil, 655 mg, 16.4 mmol) the vial was sealed with a septa top cap and purged with vac/N2 (×3). DME (22 mL) was added, followed by dropwise addition of 2-methylprop-2-en-1-ol (3.70 mL, 43.7 mmol) at 0° C. The reaction was stirred for 10 mins before the addition of (S)-2-((4-bromophenoxy)methyl)oxirane (2500 mg, 10.9 mmol). The reaction was then heated to 65° C. and stirred for 2.5 h. The reaction was quenched with MeOH and filtered through a plug of SiO2 with EA. Following concentration in vacuo the mineral oil was removed by filtering through a plug of SiO2 with 10% EA/heptane and the product was eluted with Et2O. Concentration in vacuo gave(S)-1-(4-bromophenoxy)-3-((2-methylallyl)oxy)propan-2-ol. LCMS t=0.92, m/z=301.2, 303.2 [M+H].
Step 2: To a 100 mL RBF with a stirbar was added (S)-1-(4-bromophenoxy)-3-((2-methylallyl)oxy)propan-2-ol (3.0 g, 9.96 mmol), DCM (24.9 ml) and mCPBA (77 w %, 2.90 g, 12.95 mmol) and the mixture stirred at rt for 30 mins. Na2S2O3(aq) was added and the reaction mixture stirred vigorously for 5 mins. The reaction mixture was diluted with Et2O, washed with Na2S2O38, with NaHCO3(aq) (×2) and brine. The organic layer was dried over Na2SO4, filtered through a plug of SiO2 and concentrated in vacuo to give (2S)-1-(4-bromophenoxy)-3-((2-methyloxiran-2-yl)methoxy)propan-2-ol. LCMS t=0.78 min, m/z=317.2, 319.2 [M+H].
Step 3: To a 100 mL RBF with a stirbar was added (2S)-1-(4-bromophenoxy)-3-((2-methyloxiran-2-yl)methoxy)propan-2-ol (1.80 g, 5.7 mmol), DCM (114 mL) and TFA (0.53 mL, 6.8 mmol) and the reaction stirred at rt for 3 h. L. 20 mL of 2M NaOH(aq) and 20 mL of MeOH were added and the resulting mixture was stirred vigorously for 1 h. The reaction was diluted with brine and extracted with DCM (×3). The combined organic layers were dried over Na2SO4, filtered through a plug of SiO2 and concentrated in vacuo to give ((6S)-6-((4-bromophenoxy)methyl)-2-methyl-1,4-dioxan-2-yl)methanol which was used in the next reaction without further purification. LCMS t=0.77 min, m/z=317.2, 319.2 [M+H] (2× peaks).
Step 4: To a 100 mL RBF with a stirbar was added crude ((6S)-6-((4-bromophenoxy)methyl)-2-methyl-1,4-dioxan-2-yl)methanol (1.40 g, 4.4 mmol) and the flask was purged with N2 before the addition of THF (22.1 mL), and then sodium hydride (60 w % in mineral oil, 353 mg, 8.8 mmol). The mixture was then stirred for 15 mins before addition of iodomethane (1.38 mL, 22.1 mmol). The mixture was then stirred at rt for 2 h. The reaction mixture was quenched with MeOH and filtered through a plug of SiO2 with EA and concentrated in vacuo. Purification by silica gel chromatography (ISCO, 0-40% EA/Heptane) followed by separation by chiral chromatography gave two products: (2S,6S)-6-((4-bromophenoxy)methyl)-2-(methoxymethyl)-2-methyl-1,4-dioxane and (2R,6S)-6-((4-bromophenoxy)methyl)-2-(methoxymethyl)-2-methyl-1,4-dioxane. LCMS t=0.95 min, m/z=331.2, 333.2 [M+H].
5-(4-(((2S,6R)-6-(methoxymethyl)-6-methyl-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (406) was obtained using the method described for Example 405, except (2S,6S)-6-((4-bromophenoxy)methyl)-2-(methoxymethyl)-2-methyl-1,4-dioxane was replaced with (2R,6S)-6-((4-bromophenoxy)methyl)-2-(methoxymethyl)-2-methyl-1,4-dioxane. LCMS t=0.86 min, m/z=457.5 [M+H]. 1H NMR (500 MHz, DMSO-d6) δ 13.6 (br. s, 1H), 8.48 (s, 1H), 8.28 (br. s, 1H), 8.18 (s, 1H), 7.30-7.22 (m, 2H), 7.06-7.00 (m, 2H), 4.18 (dtd, J=10.4, 4.9, 3.0 Hz, 1H), 3.99-3.92 (m, 2H), 3.89 (dd, J=11.3, 3.0 Hz, 1H), 3.67 (d, J=11.3 Hz, 1H), 3.64 (d, J=9.5 Hz, 1H), 3.48 (d, J=9.5 Hz, 1H), 3.32-3.26 (m, 1H), 3.15 (d, J=11.6 Hz, 1H), 1.04 (s, 3H).
5-(4-(((2R,6R)-6-(methoxymethyl)-6-methyl-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (407) was obtained using the method described for Example 405, except (2S,6S)-6-((4-bromophenoxy)methyl)-2-(methoxymethyl)-2-methyl-1,4-dioxane was replaced with (2R,6R)-6-((4-bromophenoxy)methyl)-2-(methoxymethyl)-2-methyl-1,4-dioxane. LCMS t=0.88 min, m/z=457.4 [M+H]. 1H NMR (500 MHz, DMSO-d6) δ 13.63 (br. s, 1H), 8.46 (br. s, 1H), 8.27 (s, 1H), 8.17 (br. s, 1H), 7.26 (d, J=8.4 Hz, 2H), 7.03 (d, J=8.4 Hz, 2H), 4.21-4.15 (m, 1H), 4.00-3.91 (m, 2H), 3.88 (dd, J=11.2, 2.8 Hz, 1H), 3.51 (d, J=11.2 Hz, 1H), 3.36 (d, J=11.2 Hz, 2H), 3.31-3.24 (m, 5H), 3.22 (s, 2H).
(2R,6R)-6-((4-bromophenoxy)methyl)-2-(methoxymethyl)-2-methyl-1,4-dioxane was obtained using the method described for the preparation of (2S,6S)-6-((4-bromophenoxy)methyl)-2-(methoxymethyl)-2-methyl-1,4-dioxane, except (S)-2-((4-bromophenoxy)methyl)oxirane was replaced with (R)-2-((4-bromophenoxy)methyl)oxirane.
5-(4-(((2R,6S)-6-(methoxymethyl)-6-methyl-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (408) was obtained using the method described for Example 405, except (2S,6S)-6-((4-bromophenoxy)methyl)-2-(methoxymethyl)-2-methyl-1,4-dioxane was replaced with (2S,6R)-6-((4-bromophenoxy)methyl)-2-(methoxymethyl)-2-methyl-1,4-dioxane. LCMS t=0.86 min, m/z=457.5 [M+H]. 1H NMR (500 MHz, DMSO-d6) δ 13.6 (br. s, 1H), 8.46 (s, 1H), 8.28 (br. s, 1H), 8.18 (s, 1H), 7.30-7.22 (m, 2H), 7.06-7.00 (m, 2H), 4.18 (dtd, J=10.4, 4.9, 3.0 Hz, 1H), 3.99-3.92 (m, 2H), 3.89 (dd, J=11.3, 3.0 Hz, 1H), 3.67 (d, J=11.3 Hz, 1H), 3.64 (d, J=9.5 Hz, 1H), 3.48 (d, J=9.5 Hz, 1H), 3.32-3.26 (m, 1H), 3.15 (d, J=11.6 Hz, 1H), 1.04 (s, 3H).
(2S,6R)-6-((4-bromophenoxy)methyl)-2-(methoxymethyl)-2-methyl-1,4-dioxane was obtained using the method described for the preparation of (2R,6S)-6-((4-bromophenoxy)methyl)-2-(methoxymethyl)-2-methyl-1,4-dioxane, except (S)-2-((4-bromophenoxy)methyl)oxirane was replaced with (R)-2-((4-bromophenoxy)methyl)oxirane
5-(4-(((2S,6R)-6-(dimethylcarbamoyl)-6-methyl-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (409) was obtained by RP-HPLC purification of the product obtained using the method described for Example 405, except (2S,6S)-6-((4-bromophenoxy)methyl)-2-(methoxymethyl)-2-methyl-1,4-dioxane was replaced with (6S)-6-((4-bromophenoxy)methyl)-N,N,2-trimethyl-1,4-dioxane-2-carboxamide. 1H NMR (500 MHz, DMSO-d6) δ 6=9.44 (m, 1H), 8.10 (br s, 1H), 7.75 (br s, 1H), 7.20 (s, 2H), 6.99 (d, J=8.6 Hz, 2H), 4.03 (m, 1H), 4.08 (m, 2H), 3.90 (m, 1H), 3.68 (m, 2H), 3.18 (s, 2H), 2.77 (s, 3H), 1.51 (s, 3H). LCMS t=0.75 min, m/z=484.4 [M+H]. Chiral-HPLC: Rt=1.32 min, ee=100%.
Step 1: To a solution of ((6S)-6-((4-bromophenoxy)methyl)-2-methyl-1,4-dioxan-2-yl)methanol (250 mg, 0.788 mmol) in DMF (4 mL) was added PDC (2.19 g, 5.83 mmol) and MS 4A (750 mg) under N2 at 25° C. The mixture was stirred at 25° C. for 18 hrs. Water (30 mL) was added and the resulting mixture was filtered. The filtrate was extracted by EA (20 mL×3). The organic layers were combined, filtered, dried over anhydrous Na2SO4 and concentrated in vacuo. The residue was purified by reverse phase (FA, ACN: H2O=0.05-0.95) to give (6S)-6-((4-bromophenoxy)methyl)-2-methyl-1,4-dioxane-2-carboxylic acid. LCMS: Rt=0.771 min, [M+Na]*=353.0/355.0. 1H NMR (400 MHz, CHLOROFORM-d) δ=7.41 (m, 2H), 6.80 (d, J=8.4 Hz, 2H), 4.55 (m, 1H), 4.03 (m, 4H), 3.61 (m, 8H), 1.69 (s, 2H).
Step 2: To a solution of (6S)-6-((4-bromophenoxy)methyl)-2-methyl-1,4-dioxane-2-carboxylic acid (240 mg, 0.725 mmol) in DMF (3 mL) was added HATU (551 mg, 1.45 mmol), DIPEA (281 mg, 2.175 mmol) and dimethylamine (1.1 mL, 2.175 mmol) under N2 at 20° C. The mixture was stirred at 20° C. for 16 hrs. The mixture was diluted with H2O (20 mL), extracted with EA (20 mL×3). The organic layers were combined, dried over Na2SO4, filtered and concentrated in vacuo. The residue was purified by reverse phase (FA, ACN:H2O=0.05˜0.95) to give I (6S)-6-((4-bromophenoxy)methyl)-N,N,2-trimethyl-1,4-dioxane-2-carboxamide. LCMS: Rt=0.905 min, [M+H]+=358.2. 1H NMR (400 MHz, CHLOROFORM-d) δ=8.09 (m, 1H), 7.39 (m, 2H), 6.79 (m, 2H), 4.46 (m, 1H), 4.07 (m, 4H), 3.87 (m, 2H), 3.41 (m, 2H), 3.23 (m, 4H), 1.69 (m, 2H), 1.37 (s, 1H).
5-(4-(((2S,6S)-6-((methoxy-d3)methyl)-6-methyl-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (410) was obtained using the method described for Example 405, except (2S,6S)-6-((4-bromophenoxy)methyl)-2-(methoxymethyl)-2-methyl-1,4-dioxane was replaced with (2S,6S)-6-((4-bromophenoxy)methyl)-2-((methoxy-d3)methyl)-2-methyl-1,4-dioxane. LCMS t=0.75 min, m/z=460.2 [M+H]. 1H NMR (500 MHz, DMSO-d6) δ 13.64 (br. s, 1H), 8.46 (br. s, 1H), 8.27 (s, 1H), 8.17 (br. s, 1H), 7.26 (d, J=8.4 Hz, 2H), 7.02 (d, J=8.4 Hz, 2H), 4.18 (dtd, J=10.5, 5.0, 3.0 Hz, 1H), 3.99-391 (m, 2H), 3.88 (dd, J=11.2, 3.0 Hz, 1H), 3.51 (d, J=11.2 Hz, 1H), 3.36 (d, J=11.0 Hz, 1H), 3.27 (t, J=11.0 Hz, 1H), 3.22 (s, 2H), 1.29 (s, 3H).
(2S,6S)-6-((4-bromophenoxy)methyl)-2-((methoxy-d3)methyl)-2-methyl-1,4-dioxane was obtained using the method to obtain (2S,6S)-6-((4-bromophenoxy)methyl)-2-(methoxymethyl)-2-methyl-1,4-dioxane except iodomethane was replaced with D3-iodomethane.
5-(4-(((2S,6S)-6-(cyanomethyl)-6-methyl-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (411) was obtained by RP-HPLC purification of the product obtained using the method described for Example 405, except (2S,6S)-6-((4-bromophenoxy)methyl)-2-(methoxymethyl)-2-methyl-1,4-dioxane was replaced with 2-((2S,6S)-6-((4-bromophenoxy)methyl)-2-methyl-1,4-dioxan-2-yl)acetonitrile. 1H NMR (500 MHz, DMSO-d6) δ=13.63 (br s, 1H), 8.70 (br s, 1H), 8.21 (br s, 1H), 8.04 (br s, 1H), 7.25 (d, J=8.4 Hz, 2H), 7.03 (d, J=8.4 Hz, 2H), 4.22 (m, 1H), 3.99 (m, 3H), 3.60 (m, 1H), 3.31 (m, 2H), 2.83 (m, 2H), 1.40 (s, 3H). LCMS t=0.74 min, m/z=452.3 [M+H]. Chiral-HPLC: Rt=1.58 min, ee=96%.
Step 1: To a stirring solution of ((2S,6S)-6-((4-bromophenoxy)methyl)-2-(iodomethyl)-1,4-dioxan-2-ylmethanol (100 mg, 0.226 mmol) in dry THF (1 mL) under N2 was added lithium triethylhydroborate (0.7 mL, 0.700 mmol) (1M solution in THF) dropwise at rt. The mixture was then heated to 60° C. for 30 min. The mixture was cooled to rt and the reaction quenched with aqueous NaHCO3. The mixture was acidified with 1M aqueous HCl and extracted with EtOAc. The organic layer was dried over sodium sulfate and concentrated to give ((2S,6S)-6-((4-bromophenoxy)methyl)-2-methyl-1,4-dioxan-2-yl)methanol. LCMS: Rt=0.68 min with weak m/z=317.2 for [M+H]+. Rf=0.45 in 50% EtOAc/heptane
Step 2: To a solution of ((2S,6S)-6-((4-bromophenoxy)methyl)-2-methyl-1,4-dioxan-2-yl)methanol (350 mg, 1.10 mmol) in anhydrous DCM (5 mL) was added successively pyridine (131 mg, 1.66 mmol) and trifluoromethanesulfonic anhydride (623 mg, 2.21 mmol) at 0° C. The reaction mixture was stirred at 30° C. for 20 hrs. The mixture was washed with water (3 mL) and brine (3 mL). The combined aqueous layers were extracted with DCM (3×2 mL). The combined organic layers were dried over anhydrous Na2SO4, filtered and concentrated. The residue was purified by silica gel column chromatography (PE/EA=10/1) to give ((2R,6S)-6-((4-bromophenoxy)methyl)-2-methyl-1,4-dioxan-2-yl)methyl trifluoromethanesulfonate. TLC: PE/EA=3/1, Rf=0.7. LCMS: Rt=0.950 min, [M+H]+=449.0, 451.0. 1H NMR (400 MHz, CDCl3) δ=7.31 (d, J=9.2 Hz, 2H), 6.70 (d, J=8.8 Hz, 2H), 4.30 (m, 1H), 4.21 (m, 2H), 3.93 (m, 2H), 3.76 (m, 1H), 3.54 (m, 1H), 3.46 (m, 1H), 3.32 (m, 1H), 1.38 (s, 3H),
Step 3: To a solution of ((2R,6S)-6-((4-bromophenoxy)methyl)-2-methyl-1,4-dioxan-2-yl)methyl trifluoromethanesulfonate (440 mg, 0.98 mmol) in MeCN (7 mL) was added KCN (128 mg, 1.96 mmol) and 18-crown-6-ether (518 mg, 1.96 mmol) at 15° C. under N2. The reaction mixture was stirred at 15° C. under N2 for 17 hrs. The mixture diluted with water (7 mL) and extracted with EA (2×10 mL). The combined organic layers were dried over anhydrous Na2SO4, filtered and concentrated to give 2-((2S,6S)-6-((4-bromophenoxy)methyl)-2-methyl-1,4-dioxan-2-yl)acetonitrile. TLC: PE/EA=2/1, Rf=0.5. LCMS: Rt=0.845 min, [M+Na]r=348.0, 350.0. 1H NMR (400 MHz, CDCl3) δ=7.39 (d, J=9.2 Hz, 2H), 6.79 (d, J=8.8 Hz, 2H), 4.27 (m, 1H), 4.02 (m, 2H), 3.86 (m, 1H), 3.68 (m, 1H), 3.48 (m, 1H), 3.41 (m, 1H), 2.54 (m, 2H), 1.54 (s, 3H).
5-(4-(((2S,6R)-6-methyl-6-((methylsulfonyl)methyl)-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (412) was obtained using the method described for Example 405, except (2S,6S)-6-((4-bromophenoxy)methyl)-2-(methoxymethyl)-2-methyl-1,4-dioxane was replaced with (2R,6S)-6-((4-bromophenoxy)methyl)-2-methyl-2-((methylsulfonyl)methyl)-1,4-dioxane. LCMS t=0.69 min, m/z=505.1 [M+H]. 1H NMR (500 MHz, DMSO-d6) δ 13.65 (br. s, 1H), 8.45 (br. s, 1H), 8.27 (s, 1H), 8.17 (br. s, 1H), 7.27 (d, J=8.3 Hz, 2H), 7.03 (d, J=8.3 Hz, 2H), 4.25-4.18 (m, 1H), 4.00 (d, J=4.7 Hz, 2H), 3.90 (dd, J=11.3, 3.0 Hz, 1H), 3.63 (d, J=11.4 Hz, 1H), 3.54 (d, J=11.4 Hz, 1H), 3.45-3.24 (m, 3H), 3.02 (s, 3H), 1.50 (s, 3H).
Step 1: To a 500 mL flame-dried 3 necked flask with a stirbar was added 2-methylenepropane-1,3-diol (45.6 ml, 559 mmol) and the vessel was purged with vac/N2 (×3). DME (186 mL) was added and the reaction cooled to 0° C. Sodium hydride (60% in mineral oil, 4.92 g, 123 mmol) was added in 3 portions over 15 mins and the reaction was stirred at rt for a further 15 mins. A dropping funnel was attached and a solution of (S)-2-((4-bromophenoxy)methyl)oxirane (25.6 g, 112 mmol) in DME (60 mL) was charged to it. The reaction was heated to 60° C. (internal temp) and the solution of epoxide was added dropwise over 1 h. Following completion of addition, the reaction was stirred at 60° C. for a further 3 h. The reaction was quenched with H2O, extracted with EA (×4), dried over Na2SO4, filtered and concentrated in vacuo. Purification by silica gel chromatography (ISCO, 0-100% EA/Heptane) gave (S)-2-((3-(4-bromophenoxy)-2-hydroxypropoxy)methyl)prop-2-en-1-ol. LCMS t=0.69 min, m/z=317.1, 319.1 [M+H].
Step 2: To a 1 L oven-dried 3-necked flask with overhead stirrer was added NaHCO3(aq) (19.7 g, 235 mmol) and iodine (59.5 g, 235 mmol). The reaction was purged with vac/N2 (×3). Acetonitrile (521 mL) was added and the reaction was stirred at rt for 10 mins before cooling to −20° C. A solution of (S)-2-((3-(4-bromophenoxy)-2-hydroxypropoxy)methyl)prop-2-en-1-ol (24.8 g, 78 mmol) in Et2O (20 mL) was added and the mixture stirred at −20° C. overnight. The reaction was quenched with Na2S2O3 and extracted with EA×4. The combined organic layers were washed with brine, dried over Na2SO4, filtered and concentrated in vacuo to give crude product. An initial recrystallization from −3:1 EtOH/H2O gives >95% pure material in a 92:8 dr which was then recrystallised via layer diffusion crystallization between DCM and heptane to give ((2S,6S)-6-((4-bromophenoxy)methyl)-2-(iodomethyl)-1,4-dioxan-2-yl)methanol. LCMS: t=0.89 min, m/z=443.3, 445.3 [M+H].
Step 3: To an 8 ml vial was added ((2S,6S)-6-((4-bromophenoxy)methyl)-2-(iodomethyl)-1,4-dioxan-2-yl)methanol (85 mg, 0.20 mmol) and sodium methanesulfinate (102 mg, 1.0 mmol). The vial was sealed with a septa-top cap and purged with vac/N2 (×3). DMSO (0.66 mL) was added and the reaction was heated to 90° C. and stirred for 72 h. H2O and brine were added and the reaction was extracted with EA×4. The combined organic layers were dried over Na2SO4, filtered through a plug of silica with EA and concentrated in vacuo. Et2O was added and crystallisation gave (2R,6S)-6-((4-bromophenoxy)methyl)-2-methyl-2-((methylsulfonyl)methyl)-1,4-dioxane. LCMS t=0.81 min, m/z=379.0, 381.0 [M+H].
5-(4-(((2S,6R)-6-((cyclopropylsulfonyl)methyl)-6-methyl-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (413) was obtained using the method described for Example 412, except (2R,6S)-6-((4-bromophenoxy)methyl)-2-methyl-2-((methylsulfonyl)methyl)-1,4-dioxane was replaced with (2R,6S)-6-((4-bromophenoxy)methyl)-2-((cyclopropylsulfonylmethyl)-2-methyl-1,4-dioxane. LCMS t=0.73 min, m/z=531.2 [M+H]. 1H NMR (500 MHz, DMSO-d6) δ 13.63 (br. s, 1H), 8.45 (br. s, 1H), 8.27 (s, 1H), 8.16 (br. s, 1H), 7.26 (d, J=8.3 Hz, 2H), 7.01 (d, J=8.3 Hz, 2H), 4.28-4.17 (m, 1H), 4.00 (d, J=4.4 Hz, 2H), 3.94-3.86 (m, 1H), 3.66-3.54 (m, 2H), 3.41-3.28 (m, 1H), 2.81 (tt, J=8.2, 5.0 Hz, 1H), 1.53 (s, 3H), 1.02-0.94 (m, 2H), 0.91-0.81 (m, 2H).
(S)-5-(4-((6,6-bis(methoxymethyl)-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (414) was obtained using the method described for Example 403, except (2S,6S)-6-((4-bromophenoxy)methyl)-2-(methoxymethyl)-2-methyl-1,4-dioxane was replaced with (S)-6-((4-bromophenoxy)methyl)-2,2-bis(methoxymethyl)-1,4-dioxane. LCMS t=0.75 min, m/z=487.2 [M+H]. 1H NMR (500 MHz, DMSO-d6) δ 13.65 (br. s, 1H), 8.59 (br. s, 1H), 8.13 (s, 1H), 7.79 (br. s, 1H), 7.20 (d, J=8.5 Hz, 2H), 7.04-6.86 (m, 2H), 3.91 (d, J=4.6 Hz, 2H), 3.81 (dd, J=11.4, 2.9 Hz, 1H), 3.63 (d, J=10.3 Hz, 1H), 3.58 (d, J=11.4 Hz, 1H), 3.50 (d, J=10.3 Hz, 1H), 3.33 (dd, J=11.6, 9.7 Hz, 2H), 3.28 (d, J=10.3 Hz, 1H), 3.25 (s, 3H), 3.20 (d, J=10.3 Hz, 1H), 3.19 (s, 3H), 1.96 (s, 3H).
Step 1: To an oven-dried 4 mL vial with a stirbar was added ((2S,6S)-6-((4-bromophenoxy)methyl)-2-(iodomethyl)-1,4-dioxan-2-yl)methanol (100 mg, 0.23 mmol) and sodium hydride (60% in mineral oil, 11.7 mg, 0.29 mmol). The reaction vial was sealed with a septa-top cap and purged with vac/N2 (×3). THF (1.1 mL) was added and the reaction mixture was stirred at rt for 10 mins. Iodomethane (71 μL, 1.13 mmol) was then added and the reaction mixture stirred at rt for 1 h. The reaction was quenched with methanol, filtered through a plug of SiO2 with Et2O and concentrated in vacuo to give (2S,6S)-6-((4-bromophenoxy)methyl)-2-(iodomethyl)-2-(methoxymethyl)-1,4-dioxane which was used without further purification. LCMS t=1.06 min, m/z=457.1, 459.1 [M+H].
Step 2: To an oven-dried 4 mL vial with a stirbar was added (2S,6S)-6-((4-bromophenoxy)methyl)-2-(iodomethyl)-2-(methoxymethyl)-1,4-dioxane (103 mg, 0.23 mmol) and cesium hydroxide monohydrate (150 mg, 0.90 mmol). The vial was sealed with a septa-top cap and purged with vac/N2 (×3). DMSO (1.1 mL) was added, followed by methanol (73 μL, 1.80 mmol) and the reaction mixture heated to 70° C. and stirred overnight. The reaction mixture was cooled to rt, quenched with NH4Cl(aq) and extracted into Et2O (×4). The combined organic layers were dried over Na2SO4, filtered and concentrated in vacuo. The residue was purified by silica gel chromatography (ISCO, 0-70% EA/heptane) to give (S)-6-((4-bromophenoxy)methyl)-2,2-bis(methoxymethyl)-1,4-dioxane. LCMS t=0.90 min, m/z=361.1, 363.1 [M+H].
(S)-5-(4-((2,5,8-trioxaspiro[3.5]nonan-6-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (415) was obtained using the method described for Example 405, except (2S,6S)-6-((4-bromophenoxy)methyl)-2-(methoxymethyl)-2-methyl-1,4-dioxane was replaced with (S)-6-((4-bromophenoxy)methyl)-2,5,8-trioxaspiro[3.5]nonane. LCMS t=0.65 min, m/z=441.2 [M+H]. 1H NMR (500 MHz, DMSO-d6) δ 13.62 (br. s, 1H), 8.44 (br. s, 1H), 8.26 (s, 1H), 8.15 (br. s, 1H), 7.26 (d, J=8.5 Hz, 2H), 7.03 (d, J=8.5 Hz, 2H), 6.50 (br. s, 1H), 4.58 (dd, J=6.7, 1.7 Hz, 1H), 4.53 (d, J=6.7 Hz, 1H), 4.32 (d, J=7.2 Hz, 1H), 4.30 (d, J=7.2 Hz, 1H), 4.08 (d, J=11.7 Hz, 1H), 4.06-3.99 (m, 2H), 3.96-3.88 (m, 1H), 3.81 (dd, J=11.7, 2.7 Hz, 1H), 3.49-3.38 (m, 2H).
To a 4 mL vial with a stirbar was added ((2S,6S)-6-((4-bromophenoxy)methyl)-2-(iodomethyl)-1,4-dioxan-2-yl)methanol (100 mg, 0.23 mmol) and cesium hydroxide monohydrate (49 mg, 0.29 mmol). The vial was sealed with a septa-top cap and purged with vac/N2 (×3). DMSO (2.2 mL) was added and the reaction mixture stirred at 90° C. for 1 h. The reaction was quenched with 1M HCl, extracted with Et2O (×3), dried over Na2SO4, filtered through a plug of SiO2 and concentrated in vacuo. Purification of the residue by reverse phase HPLC, followed by lyophilisation, gave (S)-6-((4-bromophenoxy)methyl)-2,5,8-trioxaspiro[3.5]nonane. LCMS t=0.80 min, m/z=315.1, 317.1 [M+H].
(S)-5-(4-((1,4,8,11-tetraoxaspiro[5.6]dodecan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (416) was obtained using the method described for Example 405, except (2S,6S)-6-((4-bromophenoxy)methyl)-2-(methoxymethyl)-2-methyl-1,4-dioxane was replaced with (S)-2-((4-bromophenoxy)methyl)-1,4,8,11-tetraoxaspiro[5.6]dodecane. LCMS t=0.70 min, m/z=485.2 [M+H].
Step 1: To an oven-dried 4 mL vial with a stirbar was added ((2S,6S)-6-((4-bromophenoxy)methyl)-2-(iodomethyl)-1,4-dioxan-2-yl)methanol (0.14 g, 0.32 mmol) and potassium acetate (0.155 g, 1.58 mmol). The vial was sealed with a septa-top cap and purged with vac/N2 (×3). DMSO (1.6 mL) was added and the reaction mixture heated to 90° C. and stirred for 72 h. The reaction was quenched with H2O and brine, extracted into EA (×4), dried over Na2SO4, filtered through a plug of silica with EA and concentrated in vacuo. The residue was dissolved in MeOH (1.5 mL) and sodium hydroxide (36 mg, 0.90 mmol) was added. The reaction mixture then stirred at rt for 1 h. The reaction mixture was concentrated and the residue was redissolved in 1 M HCl and extracted into EA. The combined organic layers were dried over Na2SO4, filtered through a plug of silica and concentrated to give (S)-(6-((4-bromophenoxy)methyl)-1,4-dioxane-2,2-diyl)dimethanol which was used without further purification. LCMS t=0.65 min, m/z=333.1, 335.1 [M+H].
Step 2: To a 10 mL MW vial with a stirbar was added (S)-(6-((4-bromophenoxy)methyl)-1,4-dioxane-2,2-diyl)dimethanol (100 mg, 0.300 mmol), sodium hydroxide (720 mg, 18.0 mmol) and TBAB (19.4 mg, 0.06 mmol). The vial was sealed and purged with vac/N2×3. DCE (1.5 mL) and an equal amount of water was added and the reaction heated to 65° C. and stirred vigorously overnight. An additional amount of DCE (1.5 mL) was added and the reaction was stirred at 65° C. for a further 48 h. The reaction was then diluted with water and extracted in Et2O (×4). The combined organic layers were dried over Na2SO4, filtered and concentrated in vacuo. Purification of the residue by reverse phase HPLC gave (S)-2-((4-bromophenoxy)methyl)-1,4,8,11-tetraoxaspiro[5.6]dodecane. LCMS t=0.85 min, m/z=359.1, 361.1 [M+H].
5-(4-(((2S,6S)-6-(fluoromethyl)-6-(methoxymethyl)-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (417) was obtained using the method described for Example 405, except (2S,6S)-6-((4-bromophenoxy)methyl)-2-(methoxymethyl)-2-methyl-1,4-dioxane was replaced with (2S,6S)-6-((4-bromophenoxy)methyl)-2-(fluoromethyl)-2-(methoxymethyl)-1,4-dioxane. LCMS t=0.76 min, m/z=475.2 [M+H]. 1H NMR (500 MHz, DMSO-d6) δ 13.65 (br. s, 1H), 8.46 (br. s, 1H), 8.27 (s, 1H), 8.17 (br. s, 1H), 7.26 (d, J=8.3 Hz, 2H), 7.03 (d, J=8.3 Hz, 2H), 4.83 (dd, J=48.2, 9.9 Hz, 1H), 4.60 (dd, J=46.0, 10.0 Hz, 1H), 4.31-4.22 (m, 1H), 4.04-3.95 (m, 2H), 3.92 (dd, J=11.4, 3.0 Hz, 1H), 3.70 (d, J=12.1 Hz, 1H), 3.43 (dd, J=12.1, 6.4 Hz, 1H), 3.37 (dd, J=12.5, 10.3 Hz, 2H), 3.25 (dd, J=9.9, 1.9 Hz, 1H).
Step 1: To an oven-dried 4 mL vial with a stirbar was added (2S,6S)-6-((4-bromophenoxy)methyl)-2-(iodomethyl)-2-(methoxymethyl)-1,4-dioxane (see Example 412) (560 mg, 1.22 mmol), 18-crown-6 (97 mg, 0.37 mmol) and potassium acetate (601 mg, 6.1 mmol). The vial was sealed with a septa-top cap and purged with vac/N2 (×3). DMSO (8.2 mL) was added and the reaction mixture was heated to 100° C. and stirred for 48 h. The reaction was diluted with EA (250 mL), and washed sequentially with H2O, 1:1 H2O/Brine and then brine. The organic layer was dried over Na2SO4, filtered through a plug of SiO2 with EA, concentrated in vacuo. The residue was dissolved in MeOH (6.1 mL) and sodium hydroxide (294 mg, 7.35 mmol) was added. The vial was sealed and stirred at rt for 30 mins. The reaction was quenched with AcOH, diluted with EA and filtered through a plug of SiO2. The concentrated eluent was then purified by silica gel chromatography (ISCO, 0-100% EA/Heptane) to give ((2S,6S)-6-((4-bromophenoxy)methyl)-2-(methoxymethyl)-1,4-dioxan-2-yl)methanol. LCMS t=0.75, m/z=347.1, 349.1 [M+H].
Step 2: To an oven-dried 8 mL vial with a stirbar was added ((2S,6S)-6-((4-bromophenoxy)methyl)-2-(methoxymethyl)-1,4-dioxan-2-yl)methanol (130 mg, 0.37 mmol). The vial was sealed with a septa-top cap and purged with vac/N2 (×3). DCM (3.7 mL) and pyridine (61 μL, 0.75 mmol) were added and the reaction was cooled to −78° C. Tf2O (89 μl, 0.52 mmol) was added dropwise and the reaction mixture was then warmed to rt and stirred for 1 h. NaHCO3(aq) was added to quench the reaction, and the mixture was then extracted into Et2O (×3). The combined organic layers were dried over Na2SO4, filtered and concentrated in vacuo to give ((2S,6S)-6-((4-bromophenoxy)methyl)-2-(methoxymethyl)-1,4-dioxan-2-yl)methyl trifluoromethanesulfonatel which was used without further purification. LCMS t=1.07 min, m/z=479.1, 481.0 [M+H].
Step 3: To an oven-dried 4 mL vial with a stirbar was added ((2S,6S)-6-((4-bromophenoxy)methyl)-2-(methoxymethyl)-1,4-dioxan-2-yl)methyl trifluoromethanesulfonate (177 mg, 0.37 mmol) and the vial was sealed with a septa-top cap and purged with vac/N2 (×3). TBAF·3H2O (1M in THF, 740 μl, 0.74 mmol) was added and the reaction mixture stirred at rt overnight. The reaction mixture was diluted with Et2O, SiO2 was added and the mixture stirred vigorously for 5 mins before filtering through a plug of SiO2 with Et2O. The filtrate was concentrated in vacuo to give (2S,6S)-6-((4-bromophenoxy)methyl)-2-(fluoromethyl)-2-(methoxymethyl)-1,4-dioxane which was used without further purification. LCSM t=0.90 min, m/z=349.1, 351.1 [M+H].
5-(4-(((2S,6S)-6-(chloromethyl)-6-(methoxymethyl)-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (418) was obtained using the method described for Example 417, except (2S,6S)-6-((4-bromophenoxy)methyl)-2-(fluoromethyl)-2-(methoxymethyl)-1,4-dioxane was replaced with (2S,6S)-6-((4-bromophenoxy)methyl)-2-(chloromethyl)-2-(methoxymethyl)-1,4-dioxane. LCMS t=0.82 min, m/z=491.2 [M+H]. 1H NMR (500 MHz, DMSO-d6) δ 13.61 (br. s, 1H), 8.46 (br. s, 1H), 8.27 (s, 1H), 8.17 (br. s, 1H), 7.26 (d, J=8.4 Hz, 2H), 7.03 (d, J=8.4 Hz, 2H), 4.22-4.15 (m, 1H), 4.15 (d, J=12.0 Hz, 1H), 4.04-3.96 (m, 2H), 3.92 (dd, J=11.4, 2.9 Hz, 1H), 3.84 (d, J=11.9 Hz, 1H), 3.72 (d, J=12.0 Hz, 1H), 3.49 (d, J=12.0 Hz, 1H), 3.41-3.36 (m, 1H), 3.25 (d, J=9.8 Hz, 1H).
(2S,6S)-6-((4-bromophenoxy)methyl)-2-(chloromethyl)-2-(methoxymethyl)-1,4-dioxane was obtained using the procedure used in the synthesis of (2S,6S)-6-((4-bromophenoxy)methyl)-2-(fluoromethyl)-2-(methoxymethyl)-1,4-dioxane, except tetrabutylammonium chloride (TBAF) was replaced with tetrabutylammonium chloride (TBAC).
5-(4-(((2S,6S)-6-(fluoromethyl)-6-methyl-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (419) was obtained using the method described for Example 405, except (2S,6S)-6-((4-bromophenoxy)methyl)-2-(methoxymethyl)-2-methyl-1,4-dioxane was replaced with (2S,6S)-6-((4-bromophenoxy)methyl)-2-(fluoromethyl)-2-methyl-1,4-dioxane. LCMS t=0.76 min, m/z=445.3 [M+H]. 1H NMR (400 MHz, DMSO-d6) δ=13.64 (br s, 1H), 8.51 (br s, 1H), 8.26 (s, 1H), 8.16 (br s, 1H), 7.27 (d, J=8.8 Hz, 2H), 7.03 (d, J=8.8 Hz, 2H), 4.77 (m, 2H), 4.52 (m, 1H), 3.98 (m, 2H), 3.95 (m, 1H), 3.72 (m 1H), 3.36 (m, 2H), 3.33 (m, 1H), 1.08 (s, 3H).
5-(4-(((2S,6R)-6-(fluoromethyl)-6-methyl-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (420) was obtained using the method described for Example 405, except (2S,6S)-6-((4-bromophenoxy)methyl)-2-(methoxymethyl)-2-methyl-1,4-dioxane was replaced with (2R,6S)-6-((4-bromophenoxy)methyl)-2-(fluoromethyl)-2-methyl-1,4-dioxane. LCMS t=0.77 min, m/z=445.0 [M+H]. 1H NMR (400 MHz, DMSO-d6) δ=13.65 (br s, 1H), 8.49 (br s, 1H), 8.26 (s, 1H), 8.17 (br s, 1H), 7.27 (d, J=8.4 Hz, 2H), 7.04 (d, J=8.8 Hz, 2H), 4.33 (s, 1H), 4.21 (s, 1H), 3.98 (m, 2H), 3.96 (m, 1H), 3.58 (d, J=11.2 Hz, 1H), 3.43 (d, J=11.2 Hz, 1H), 3.33 (m, 2H), 1.29 (d, J=2.0 Hz, 3H).
5-(4-(((2S,6R)-6-((3-fluoroazetidin-1-yl)methyl)-6-methyl-1,4-dioxan-2-ylmethoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (421) was obtained using the method described for Example 405, except (2S,6S)-6-((4-bromophenoxy)methyl)-2-(methoxymethyl)-2-methyl-1,4-dioxane was replaced with 1-(((2R,6S)-6-((4-bromophenoxy)methyl)-2-methyl-1,4-dioxan-2-yl)methyl)-3-fluoroazetidine. 1H NMR: (400 MHz DMSO-d6), δ=8.65 (s, 1H), 8.23 (s, 1H), 8.08 (s, 1H), 7.25 (d, J=8.8 Hz, 2H), 7.00 (d, J=8.4 Hz, 2H), 5.28-5.02 (m, 1H), 4.26-4.16 (m, 1H), 3.97-3.82 (m, 3H), 3.79-3.57 (m, 5H), 3.33-3.20 (m, 5H), 3.17-3.08 (m, 2H), 2.95-2.73 (m, 3H), 1.01 (s, 3H). LCMS: Rt=0.58 min, m/z=500.1 (M+H). Chiral HPLC: Rt=2.31 min, ee value=100%.
To a solution of (2S,6S)-6-((4-bromophenoxy)methyl)-2-(Iodomethyl)-2-methyl-1,4-dioxane (2.0 g, 4.68 mmol) in MeCN (20 mL) were added 3-fluoroazetidine hydrochloride (1.04 g, 9.37 mmol) and Cs2CO3 (4.58 g, 14.05 mmol) at 25° C. and the mixture was stirred at 120° C. for 6 days. The reaction mixture was poured into water (40 mL) and the resulting mixture extracted with EA (20 mL×3). The combined organic layers were dried over anhydrous Na2SO4, filtered and concentrated. The crude product was purified by silica gel column chromatography (PE/EA=50/1 to 5/1) to give 1-(((2R,6S)-6-((4-bromophenoxy)methyl)-2-methyl-1,4-dioxan-2-yl)methyl)-3-fluoroazetidine. 1H NMR (400 MHz, CDCl3) δ=7.41-7.34 (m, 2H), 6.81-6.72 (m, 2H), 5.18 (m, 1H), 5.04 (m, 1H), 4.29-4.19 (m, 1H), 3.99-3.90 (m, 2H), 3.85-3.65 (m, 4H), 3.37-3.18 (m, 4H), 2.95-2.78 (m, 2H), 1.09 (s, 3H).
5-(4-(((2S,6R)-6-((3,3-difluoroazetidin-1-yl)methyl)-6-methyl-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (422) was obtained using the method described for Example 405, except (2S,6S)-6-((4-bromophenoxy)methyl)-2-(methoxymethyl)-2-methyl-1,4-dioxane was replaced with 1-(((2R,6S)-6-((4-bromophenoxy)methyl)-2-methyl-1,4-dioxan-2-yl)methyl)-3,3-difluoroazetidine. 1H NMR: (400 MHz, DMSO-d6), δ=8.72 (br s, 1H), 8.20 (s, 1H), 8.01 (br s, 1H), 7.25 (d, J=8.8 Hz, 2H), 7.00 (d, J=8.8 Hz, 2H), 4.24 (m, 1H), 3.94 (m, 2H), 3.86 (m, 1H), 3.68-3.62 (m, 5H), 3.27-3.25 (m, 3H), 3.16 (m, 1H), 3.16 (m, 1H), 2.81 (m, 1H), 1.03 (s, 3H). LCMS: Rt=0.77 min, m/z=518.4 (M+H). Chiral HPLC: Rt=1.67 min, ee value=100%.
1-(((2R,6S)-6-((4-bromophenoxy)methyl)-2-methyl-1,4-dioxan-2-yl)methyl)-3,3-difluoroazetidine was obtained using the method in the synthesis of 1-(((2R,6S)-6-((4-bromophenoxy)methyl)-2-methyl-1,4-dioxan-2-yl)methyl)-3-fluoroazetidine, except 3-fluoroazetidine hydrochloride was replaced with 2,2-difluoroazetidine hydrochloride.
5-(4-(((2S,6S)-6-((dimethylamino)methyl)-6-methyl-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (423) was obtained using the method described for Example 405, except (2S,6S)-6-((4-bromophenoxy)methyl)-2-(methoxymethyl)-2-methyl-1,4-dioxane was replaced with 1-((2S,6S)-6-((4-bromophenoxy)methyl)-2-methyl-1,4-dioxan-2-yl)-N,N-dimethylmethanamine. 1H NMR (400 MHz, DMSO-d6) δ=9.29 (br s, 1H), 8.10 (s, 1H), 7.76 (br s, 1H), 7.20 (d, J=8.6 Hz, 2H), 6.98 (d, J=8.6 Hz, 2H), 4.14 (m, 1H), 3.95 (m, 2H), 3.89 (m, 2H), 3.46 (m, 2H), 3.31 (m, 1H), 2.57 (s, 1H), 2.44 (s, 6H), 1.34 (s, 3H). LCMS: Rt=0.78 min, m/z=470.4 (M+H). Chiral HPLC: Rt=3.303 min, de value=95%.
A solution of (2R,6S)-6-((4-bromophenoxy)methyl)-2-(iodomethyl)-2-methyl-1,4-dioxane (2.0 g, 4.68 mmol) and dimethylamine in THF (2M, 14.5 mL) was heated in an 250-mL autoclave at 120° C. for 5 days. The reaction mixture was concentrated in vacuum and the residue purified by silica gel column chromatography (PE-PE/EA=1/1) to give 1-((2S,6S)-6-((4-bromophenoxy)methyl)-2-methyl-1,4-dioxan-2-yl)-N,N-dimethylmethanamine. LCMS: Rt=0.61 min, m/z=344.0, 348.0 (M+H).
5-(4-(((2S,6R)-6-((dimethylamino)methyl)-6-methyl-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (424) was obtained using the method described for Example 405, except (2S,6S)-6-((4-bromophenoxy)methyl)-2-(methoxymethyl)-2-methyl-1,4-dioxane was replaced with 1-((2R,6S)-6-((4-bromophenoxy)methyl)-2-methyl-1,4-dioxan-2-yl)-N,N-dimethylmethanamine. 1H NMR (400 MHz, CDCl3) δ=9.48 (brs, 1H), 8.06 (s, 1H), 7.65 (brs, 1H), 7.20 (d, J=8.0 Hz, 2H), 6.96 (d, J=8.0 Hz, 2H), 4.35 (m, 1H), 3.97 (m, 3H), 3.66 (m, 1H), 3.29 (m, 3H), 2.83 (m, 1H), 2.55 (s, 6H), 1.16 (s, 3H). LCMS: Rt=0.61 min, m/z=470.1 (M+H). Chiral HPLC: Rt=3.178 min, de value=>99%.
5-(4-(((2S,6R)-6-((difluoromethoxy)methyl)-6-methyl-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (425) was obtained using the method described for Example 405, except (2S,6S)-6-((4-bromophenoxy)methyl)-2-(methoxymethyl)-2-methyl-1,4-dioxane was replaced with (2R,6S)-6-((4-bromophenoxy)methyl)-2-((difluoromethoxy)methyl)-2-methyl-1,4-dioxane. 1H NMR: (400 MHz, DMSO-d6), δ=13.6 (br s, 1H), 8.53 (br s, 1H), 8.25 (s, 1H), 5 8.15 (br s, 1H), 7.26 (d, J=8.6 Hz, 2H), 7.03 (d, J=8.8 Hz, 2H), 6.68 (m, 1H), 4.19 (m, 1H), 3.99 (m, 2H), 3.91 (m, 1H), 3.75 (m, 2H), 3.56 (m, 1H), 3.40 (m, 1H), 3.29 (m, 1H), 1.31 (s, 3H). LCMS: Rt=0.89 min, m/z=493.0 (M+H). Chiral HPLC: Rt=2.03 min, de value=99.14%.
To a solution of ((2S,6S)-6-((4-bromophenoxy)methyl)-2-methyl-1,4-dioxan-2-yl)methanol (800 mg, 2.52 mmol) and KOAc (990 mg, 10.09 mmol) in 1:1 DCM/H2O (7 mL) was added (bromodifluoromethyl)trimethylsilane (1025 mg, 5.04 mmol) at 0° C. The reaction mixture was warmed to 20° C. and stirred at 20° C. for 16 hrs. The mixture was diluted with water (10 mL) and extracted with DCM (15 mL×2). The combined organic layers were washed with brine, dried over anhydrous Na2SO4, filtered and concentrated. The residue was purified by column chromatography (PE/EA=100/1-20/1) to give (2R,6S)-6-((4-bromophenoxy)methyl)-2-((difluoromethoxy)methyl)-2-methyl-1,4-dioxane. 1H NMR (400 MHz, CDCl3) δ=7.38 (d, J=9.2 Hz, 2H), 6.78 (d, J=8.8 Hz, 2H), 6.44 (m, 1H), 4.26 (m, 1H), 3.99 (m, 2H), 3.84 (m, 1H), 3.75 (m, 2H), 3.62 (m, 1H), 3.50 (m, 1H), 3.39 (m, 1H), 1.42 (s, 3H).
5-(4-(((2S,6S)-6-(2-methoxyethyl)-6-methyl-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (426) was obtained using the method described for Example 405, except (2S,6S)-6-((4-bromophenoxy)methyl)-2-(methoxymethyl)-2-methyl-1,4-dioxane was replaced with (2S,6S)-6-((4-bromophenoxy)methyl)-2-(2-methoxyethyl)-2-methyl-1,4-dioxane. 1H NMR (500 MHz, DMSO-d6) δ 13.64 (s, 1H), 8.47 (s, 1H), 8.29 (s, 1H), 8.19 (s, 1H), 7.28 (d, J=8.5 Hz, 2H), 7.05 (d, J=8.6 Hz, 2H), 4.17 (ddd, J=10.5, 7.9, 4.6 Hz, 1H), 3.97 (qd, J=10.4, 4.9 Hz, 2H), 3.89 (dd, J=11.2, 3.0 Hz, 1H), 3.51 (d, J=11.3 Hz, 1H), 3.44 (td, J=6.8, 2.9 Hz, 2H), 3.27 (dt, J=11.1, 5.3 Hz, 2H), 3.22 (s, 3H), 1.72-1.57 (m, 2H), 1.31 (s, 3H). LCMS Rt=3.30 min, m/z=471.2 (M+H).
Step 1: An oven-dried 1000 mL flask was cooled under N2 and then charged with dry ether (120 mL) and 2-butyne-1-ol (9.25 mL, 124 mmol). The solution was cooled to 0° C., and Red-Al (53 mL, 157 mmol) (60 wt % solution in toluene) was added dropwise over 20 min. The reaction mixture was warmed to RT and stirred for 15 hours. The reaction mixture was then cooled to 0° C. and a THF solution (120 mL) of iodine (40.8 g, 161 mmol) was added. The reaction mixture was warmed to RT, stirred for 30 min and the reaction quenched with 10% aqueous sodium sulphite. 1M Rochelle's salt solution (150 mL) was added and the suspension vigorously stirred for 30 min. The crude mixture was extracted with EtOAc twice, dried over sodium sulfate, and concentrated. The crude was then purified via silica gel chromatography (ISCO, 0 to 30% ethyl acetate/heptane) to give (Z)-3-iodobut-2-en-1-ol (17.52 g, 88 mmol, 72% yield). 1H NMR (500 MHz, CDCl3) δ 5.80 (t, J=6.2 Hz, 1H), 4.19 (t, J=6.1 Hz, 2H), 2.56 (s, 3H), 1.59 (t, J=6.0 Hz, 1H).
Step 2: To a 500 mL flask was dissolved (Z)-3-iodobut-2-en-1-ol (17.5 g, 88 mmol) and trityl chloride (30.5 g, 106 mmol) in dry DCM (150 mL). The mixture was cooled to 0° C., then triethylamine (18.5 mL, 133 mmol) was added, followed by DMAP (1.080 g, 8.84 mmol). The reaction was warmed to RT and stirred for 16 hours. The reaction was filtered, washed with 1M HCl and sat. NaHCO3, dried over sodium sulfate, and concentrated. The crude was then purified via silica gel chromatography twice (ISCO, 0 to 10% ethyl acetate/heptane) to give (Z)-(((3-iodobut-2-en-1-yl)oxy)methanetriyl)tribenzene. LCMS Rt=1.20 min, m/z=441.1 (M+H).
Step 3: To an oven-dried 500 mL flask cooled under N2 was added (Z)-(((3-iodobut-2-en-1-yl)oxy)methanetriyl)tribenzene (22.4 g, 50.8 mmol) in dry Et2O (160 mL). After cooling to around −115° C. with a liquid N2/Et2O bath, tert-butyllithium (66 mL, 112 mmol) was then added dropwise over 30 minutes. The reaction was kept at −115° C. for 1 hour, then solid paraformaldehyde (4.58 g, 152 mmol) was added, and the reaction slowly warmed to RT over 1 hour, and then stirred at RT for 2 hours. The reaction was quenched with sat. NH4Cl, extracted with EtOAc, dried over sodium sulfate, and concentrated. The crude was then purified via silica gel chromatography (ISCO, 0 to 30% ethyl acetate/heptane) to give (Z)-2-methyl-4-(trityloxy)but-2-en-1-ol. LCMS Rt=0.98 min, m/z=367.3 (M+Na).
Step 4: To a 500 mL flask was added (S)-2-((4-bromophenoxy)methyl)oxirane (3.6 g, 15.7 mmol) and (Z)-2-methyl-4-(trityloxy)but-2-en-1-ol (10.8 g, 31.4 mmol) in dry DMF (32 mL). After purging with N2 for a few minutes, the mixture was cooled to 0° C., and sodium hydride (0.794 g, 31.4 mmol) was added in one portion. The flask was then capped with a rubber septum, stirred at RT for 15 min and then heated to 50° C. for 1 hour. The reaction was diluted with 1M HCl (35 mL) and water (120 mL), extracted with EtOAc, washed with brine, dried over sodium sulfate, and concentrated to give crude (S,Z)-1-(4-bromophenoxy)-3-((2-methyl-4-(trityloxy)but-2-en-1-yl)oxy)propan-2-ol which was used without further purification. LCMS Rt=1.17 min, m/z=595.2 (M+Na).
Step 5: Crude (S,Z)-1-(4-bromophenoxy)-3-((2-methyl-4-(trityloxy)but-2-en-1-yl)oxy)propan-2-ol (9.01 g, 15.7 mmol) was added to a 250 mL flask followed by formic acid (20 mL, 530 mmol) and the mixture was stirred at RT for 30 min. The crude was filtered, concentrated down, and azeotroped several times from DCM. This gave a mixture of around 1:1 (S,Z)-4-(3-(4-bromophenoxy)-2-hydroxypropoxy)-3-methylbut-2-en-1-ol and its formate ester. The crude mixture was dissolved in MeOH (30 mL) and water (15 mL), then powdered NaOH (3.14 g, 79 mmol) was added and the reaction stirred at RT for 30 min. The reaction was filtered, washed with MeOH, and concentrated down. The residue was redissolved in DCM, and acidified to pH 4 with 1M HCl. The aqueous was extracted with DCM, dried over sodium sulfate, and concentrated. The crude was then purified via silica gel chromatography (ISCO, 0 to 100% ethyl acetate/heptane) to give (S,Z)-4-(3-(4-bromophenoxy)-2-hydroxypropoxy)-3-methylbut-2-en-1-ol. LCMS Rt=0.67 min, m/z=353.3, 355.3 (M+Na).
Step 6: To a 250 mL flask was added a solution of (S,Z)-4-(3-(4-bromophenoxy)-2-hydroxypropoxy)-3-methylbut-2-en-1-ol (3.35 g, 10.1 mmol) in dry 1,2-dichloroethane (50 mL). The mixture was cooled to 0° C., then PdCl2(MeCN) (0.263 g, 1.01 mmol) was added, and the reaction stirred at 0° C. for 1 hour. The reaction was then warmed to RT and stirred for 30 min. The reaction was concentrated down, then purified via silica gel chromatography (ISCO, 0 to 20% ethyl acetate/heptane) to give (2S,6S)-6-((4-bromophenoxy)methyl)-2-methyl-2-vinyl-1,4-dioxane. 1H NMR (500 MHz, CDCl3) δ 7.39 (d, J=8.7 Hz, 2H), 6.81 (d, J=8.7 Hz, 2H), 5.83 (dd, J=17.5, 11.0 Hz, 1H), 5.36-5.28 (m, 1H), 5.22-5.15 (m, 1H), 4.31 (ddt, J=10.4, 6.5, 3.4 Hz, 1H), 4.06-3.97 (m, 2H), 3.87 (dd, J=9.8, 6.3 Hz, 1H), 3.56 (d, J=11.3 Hz, 1H), 3.42-3.33 (m, 2H), 1.50 (s, 3H).
Step 7: To a 100 mL flask was added (2S,6S)-6-((4-bromophenoxy)methyl)-2-methyl-2-vinyl-1,4-dioxane (600 mg, 1.92 mmol) and dry THF (4 mL). The flask was purged with N2, then borane-methyl sulfide complex (6.5 mL, 6.50 mmol, 1M solution in 2-methylTHF) was added dropwise, and the mixture then stirred at RT for 2 hours. Water (5 mL) was carefully added dropwise, then sodium perborate tetrahydrate (3 g, 19.5 mmol) was added, and the reaction continued at RT for 2 hours. The reaction was filtered then concentrated down. The crude was purified via silica gel chromatography (ISCO, 0 to 60% ethyl acetate/heptane) to give 2-((2S,6S)-6-((4-bromophenoxy)methyl)-2-methyl-1,4-dioxan-2-yl)ethan-1-ol. LCMS Rt=0.72 min, m/z=331.3, 333.3 (M+H).
Step 8: To a microwave vial was 2-((2S,6S)-6-((4-bromophenoxy)methyl)-2-methyl-1,4-dioxan-2-yl)ethan-1-ol (37 mg, 0.111 mmol) and dry THF (1 mL). Then sodium hydride (8 mg, 0.332 mmol) was added. The mixture was stirred at RT for 5 min, following which iodomethane (0.035 mL, 0.553 mmol) was added, and the reaction was continued at RT for 68 hours. The reaction was then diluted with 1M HCl, extracted with EtOAc, dried over sodium sulfate, and concentrated to give (2S,6S)-6-((4-bromophenoxy)methyl)-2-(2-methoxyethyl)-2-methyl-1,4-dioxane which was use without further purification. LCMS Rt=0.87 min, m/z=345.3, 347.3 (M+H).
5-(4-(((2S,6R)-6-methyl-6-((oxetan-3-yloxy)methyl)-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (427) was obtained using the method described for Example 405, except (2S,6S)-6-((4-bromophenoxy)methyl)-2-(methoxymethyl)-2-methyl-1,4-dioxane was replaced with (2R,6S)-6-((4-bromophenoxy)methyl)-2-methyl-2-((oxetan-3-yloxy)methyl)-1,4-dioxane. 1H NMR (500 MHz, DMSO-d6) δ 13.64 (s, 1H), 8.70 (s, 1H), 8.23 (s, 1H), 8.05 (s, 1H), 7.26 (d, J=8.7 Hz, 2H), 7.03 (d, J=8.7 Hz, 2H), 4.64 (td, J=6.5, 2.2 Hz, 2H), 4.58-4.52 (m, 1H), 4.44 (ddd, J=15.3, 6.8, 5.1 Hz, 2H), 4.19 (dtd, J=10.5, 4.9, 2.9 Hz, 1H), 4.01-3.93 (m, 2H), 3.90 (dd, J=11.3, 2.9 Hz, 1H), 3.54 (d, J=11.3 Hz, 1H), 3.40 (d, J=11.3 Hz, 1H), 3.32-3.30 (m, 1H), 3.28 (dd, J=9.7, 5.2 Hz, 2H), 1.31 (s, 3H). LCMS Rt=2.98 min, m/z=499.1 (M+H).
To a microwave vial was added (2R,6S)-6-((4-bromophenoxy)methyl)-2-(iodomethyl)-2-methyl-1,4-dioxane (250 mg, 0.585 mmol) in dry DMSO (3 mL), followed by cesium hydroxide monohydrate (300 mg, 1.80 mmol) and oxetan-3-ol (0.2 mL, 3.15 mmol. The reaction mixture was then heated to 80° C. for 2 hours. The reaction was diluted with water (15 mL), extracted with ether and washed with brine, dried over sodium sulfate, and concentrated. The crude product was then purified via silica gel chromatography (ISCO, 0 to 50% ethyl acetate/heptane) to give (2R,6S)-6-((4-bromophenoxy)methyl)-2-methyl-2-((oxetan-3-yloxy)methyl)-1,4-dioxane. LCMS Rt=0.78 min, m/z=373.2, 375.2 (M+H).
5-(4-(((2S,6S)-6-(ethoxymethyl)-6-methyl-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (428) was obtained using the method described for Example 405, except (2S,6S)-6-((4-bromophenoxy)methyl)-2-(methoxymethyl)-2-methyl-1,4-dioxane was replaced with (2S,6S)-6-((4-bromophenoxy)methyl)-2-(ethoxymethyl)-2-methyl-1,4-dioxane. 1H NMR (500 MHz, DMSO-d6) δ 13.64 (s, 1H), 8.47 (s, 1H), 8.29 (s, 1H), 8.19 (s, 1H), 7.28 (d, J=8.7 Hz, 2H), 7.04 (d, J=8.7 Hz, 2H), 4.23-4.16 (m, 1H), 4.01-3.93 (m, 2H), 3.90 (dd, J=11.3, 2.9 Hz, 1H), 3.54 (d, J=11.2 Hz, 1H), 3.51-3.41 (m, 2H), 3.37 (d, J=11.9 Hz, 1H), 3.31 (d, J=11.1 Hz, 1H), 3.27 (s, 2H), 1.31 (s, 3H), 1.12 (t, J=7.0 Hz, 3H). LCMS Rt=3.49 min, m/z=471.2 (M+H).
(2S,6S)-6-((4-bromophenoxy)methyl)-2-(ethoxymethyl)-2-methyl-1,4-dioxane was obtained using the method for the synthesis of (2R,6S)-6-((4-bromophenoxy)methyl)-2-methyl-2-((oxetan-3-yloxy)methyl)-1,4-dioxane, except oxetan-3-ol was replaced with ethanol.
5-(4-(((2S,6R)-6-methyl-6-(((3-methyl)oxetan-3-yl)oxy)methyl)-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (429) was obtained using the method described for Example 405, except (2S,6S)-6-((4-bromophenoxy)methyl)-2-(methoxymethyl)-2-methyl-1,4-dioxane was replaced with (2R,6S)-6-((4-bromophenoxy)methyl)-2-methyl-2-(((3-methyl)oxetan-3-yl)oxy)methyl)-1,4-dioxane. 1H NMR (500 MHz, DMSO-d6) δ 13.65 (s, 1H), 8.47 (s, 1H), 8.29 (s, 1H), 8.19 (s, 1H), 7.28 (d, J=8.4 Hz, 2H), 7.05 (d, J=8.6 Hz, 2H), 4.51 (d, J=6.5 Hz, 2H), 4.26 (d, J=6.4 Hz, 2H), 4.22 (dd, J=10.1, 4.3 Hz, 1H), 4.01-3.94 (m, 2H), 3.91 (dd, J=11.3, 2.9 Hz, 1H), 3.58 (d, J=11.2 Hz, 1H), 3.39 (d, J=11.3 Hz, 1H), 3.30 (d, J=11.1 Hz, 1H), 3.24 (s, 2H), 1.45 (s, 3H), 1.35 (s, 3H). LCMS Rt=3.21 min, m/z=535.3 (M+H).
(2R,6S)-6-((4-bromophenoxy)methyl)-2-methyl-2-(((3-methyl)oxetan-3-yl)oxy)methyl)-1,4-dioxane was obtained using the method for the synthesis of (2R,6S)-6-((4-bromophenoxy)methyl)-2-methyl-2-((oxetan-3-yloxy)methyl)-1,4-dioxane, except oxetan-3-ol was replaced with 3-methyl)oxetan-3-ol.
5-(4-(((2S,6S)-6-((2-methoxyethoxy)methyl)-6-methyl-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (430) was obtained using the method described for Example 405, except (2S,6S)-6-((4-bromophenoxy)methyl)-2-(methoxymethyl)-2-methyl-1,4-dioxane was replaced with (2S,6S)-6-((4-bromophenoxy)methyl)-2-((2-methoxyethoxy)methyl)-2-methyl-1,4-dioxane. 1H NMR (500 MHz, DMSO-d6) δ 13.66 (s, 1H), 8.47 (s, 1H), 8.29 (s, 1H), 8.19 (s, 1H), 7.28 (d, J=8.5 Hz, 2H), 7.04 (d, J=8.7 Hz, 2H), 4.19 (ddd, J=10.3, 5.3, 3.1 Hz, 1H), 3.97 (qd, J=10.4, 4.9 Hz, 2H), 3.90 (dd, J=11.3, 3.0 Hz, 1H), 3.61-3.51 (m, 3H), 3.45 (t, J=4.7 Hz, 2H), 3.38 (d, J=11.3 Hz, 1H), 3.32 (s, 2H), 3.30 (s, 1H), 3.26 (s, 3H), 1.31 (s, 3H). LCMS Rt=3.11 min, m/z=510.3 (M+H).
(2S,6S)-6-((4-bromophenoxy)methyl)-2-((2-methoxyethoxy)methyl)-2-methyl-1,4-dioxane was obtained using the method for the synthesis of (2R,6S)-6-((4-bromophenoxy)methyl)-2-methyl-2-((oxetan-3-yloxy)methyl)-1,4-dioxane, except oxetan-3-ol was replaced with 2-methoxyethanol.
5-(4-(((2S,6R)-6-((2,2-difluoroethoxy)methyl)-6-methyl-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (431) was obtained using the method described for Example 405, except (2S,6S)-6-((4-bromophenoxy)methyl)-2-(methoxymethyl)-2-methyl-1,4-dioxane was replaced with (2R,6S)-6-((4-bromophenoxy)methyl)-2-((2,2-difluoroethoxy)methyl)-2-methyl-1,4-dioxane. 1H NMR (500 MHz, DMSO-d6) δ 13.64 (s, 1H), 8.51 (s, 1H), 8.28 (s, 1H), 8.17 (s, 1H), 7.28 (d, J=8.5 Hz, 2H), 7.04 (d, J=8.6 Hz, 2H), 6.17 (tt, J=55.0, 3.8 Hz, 1H), 4.20 (dq, J=10.4, 4.4 Hz, 1H), 3.99 (h, J=5.4 Hz, 2H), 3.90 (dd, J=11.3, 2.9 Hz, 1H), 3.85-3.67 (m, 2H), 3.53 (d, J=11.2 Hz, 1H), 3.48 (d, J=10.6 Hz, 1H), 3.44 (d, J=10.5 Hz, 1H), 3.41 (d, J=11.3 Hz, 1H), 3.30 (d, J=11.1 Hz, 1H), 1.31 (s, 3H). LCMS Rt=4.22 min, m/z=507.3 (M+H).
(2R,6S)-6-((4-bromophenoxy)methyl)-2-((2,2-difluoroethoxy)methyl)-2-methyl-1,4-dioxane was obtained using the method for the synthesis of (2R,6S)-6-((4-bromophenoxy)methyl)-2-methyl-2-((oxetan-3-yloxy)methyl)-1,4-dioxane, except oxetan-3-ol was replaced with 2,2-difluoroethanol.
5-(4-(((2S,6R)-6-methyl-6-((2,2,2-trifluoroethoxy)methyl)-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (432) was obtained using the method described for Example 405, except (2S,6S)-6-((4-bromophenoxy)methyl)-2-(methoxymethyl)-2-methyl-1,4-dioxane was replaced with (2R,6S)-6-((4-bromophenoxy)methyl)-2-methyl-2-((2,2,2-trifluoroethoxy)methyl)-1,4-dioxane. 1H NMR (500 MHz, DMSO-d6) δ 13.65 (s, 1H), 8.47 (s, 1H), 8.29 (s, 1H), 8.19 (s, 1H), 7.28 (d, J=8.3 Hz, 2H), 7.04 (d, J=8.4 Hz, 2H), 4.25-4.06 (m, 3H), 4.04-3.95 (m, 2H), 3.90 (dd, J=11.3, 3.0 Hz, 1H), 3.57-3.49 (m, 3H), 3.42 (d, J=11.3 Hz, 1H), 3.32 (t, J=11.1 Hz, 1H), 1.31 (s, 3H). LCMS Rt=3.89 min, m/z=525.3 (M+H).
(2R,6S)-6-((4-bromophenoxy)methyl)-2-methyl-2-((2,2,2-trifluoroethoxy)methyl)-1,4-dioxane was obtained using the method for the synthesis of (2R,6S)-6-((4-bromophenoxy)methyl)-2-methyl-2-((oxetan-3-yloxy)methyl)-1,4-dioxane, except oxetan-3-ol was replaced with trifluoroethanol.
5-(4-(((2S,6S)-6-(hydroxymethyl)-6-methyl-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (433) was obtained using the method described for Example 405, except (2S,6S)-6-((4-bromophenoxy)methyl)-2-(methoxymethyl)-2-methyl-1,4-dioxane was replaced with ((2S,6S)-6-((4-bromophenoxy)methyl)-2-methyl-1,4-dioxan-2-ylmethanol. 1H NMR (500 MHz, DMSO-d6) δ 13.64 (s, 1H), 8.47 (s, 1H), 8.29 (s, 1H), 8.19 (s, 1H), 7.28 (d, J=8.5 Hz, 2H), 7.04 (d, J=8.6 Hz, 2H), 4.19 (ddd, J=10.5, 8.0, 4.5 Hz, 1H), 3.96 (qd, J=10.3, 5.0 Hz, 2H), 3.89 (dd, J=11.2, 3.0 Hz, 1H), 3.54 (d, J=11.3 Hz, 1H), 3.35 (d, J=11.4 Hz, 1H), 3.28 (q, J=11.0 Hz, 3H), 1.28 (s, 3H). LCMS Rt=2.37 min, m/z=443.3 (M+H).
5-(4-(((2S,6S)-6-(2,2-difluoroethyl)-6-methyl-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (434) was obtained using the method described for Example 405, except (2S,6S)-6-((4-bromophenoxy)methyl)-2-(methoxymethyl)-2-methyl-1,4-dioxane was replaced with (2S,6S)-6-((4-bromophenoxy)methyl)-2-(2,2-difluoroethyl)-2-methyl-1,4-dioxane. 1H NMR (500 MHz, DMSO-d6) δ 13.62 (s, 1H), 8.48 (s, 1H), 8.28 (s, 1H), 8.18 (s, 1H), 7.28 (d, J=8.6 Hz, 2H), 7.05 (d, J=8.6 Hz, 2H), 6.19 (tt, J=56.2, 4.6 Hz, 1H), 4.21 (ddd, J=10.5, 7.9, 4.6 Hz, 1H), 4.05-3.96 (m, 2H), 3.91 (dd, J=11.3, 3.0 Hz, 1H), 3.54 (d, J=11.3 Hz, 1H), 3.33-3.29 (m, 2H), 2.02 (tt, J=18.4, 4.1 Hz, 2H), 1.38 (s, 3H). LCMS Rt=3.68 min, m/z=477.0 (M+H).
Step 1: To a 100 mL flask was added 2-((2S,6S)-6-((4-bromophenoxy)methyl)-2-methyl-1,4-dioxan-2-yl)ethan-1-ol (336 mg, 1.01 mmol) and dry DCM (5 mL), followed by Dess-Martin periodinane (516 mg, 1.22 mmol) The mixture was stirred at RT for 2 hours. The reaction was quenched with a 1:1 mixture of 1M sodium thiosulfate and sat. NaHCO3 and then stirred at RT for 20 min. The crude was extracted with DCM, dried over sodium sulfate, and concentrated. The residue was purified via silica gel chromatography (ISCO, 0 to 50% ethyl acetate/heptane) to give 2-((2S,6S)-6-((4-bromophenoxy)methyl)-2-methyl-1,4-dioxan-2-ylacetaldehyde. LCMS Rt=0.78 min, m/z=329.3, 331.3 (M+H).
Step 2: To a stirring solution of 2-((2S,6S)-6-((4-bromophenoxy)methyl)-2-methyl-1,4-dioxan-2-yl)acetaldehyde (135 mg, 0.410 mmol) in dry DCM (3 mL) cooled to 0° C. was added DAST (0.17 mL, 1.29 mmol) dropwise. The reaction was continued at 0° C. for 1 hour. The reaction was quenched with sat. NaHCO3, extracted with DCM, dried over sodium sulfate, and concentrated to give crude (2S,6S)-6-((4-bromophenoxy)methyl)-2-(2,2-difluoroethyl)-2-methyl-1,4-dioxane (135 mg) that was used without further purification. 1H NMR (500 MHz, CDCl3) δ 7.40 (d, J=9.0 Hz, 2H), 6.79 (d, J=8.9 Hz, 2H), 6.06 (tt, J=56.4, 4.6 Hz, 1H), 4.26 (dtd, J=10.7, 5.2, 3.1 Hz, 1H), 3.97 (ddd, J=19.1, 10.6, 3.8 Hz, 2H), 3.83 (dd, J=9.8, 5.9 Hz, 1H), 3.55 (d, J=11.4 Hz, 1H), 3.45-3.32 (m, 2H), 1.99 (ddt, J=19.6, 15.8, 4.7 Hz, 2H), 1.47 (s, 3H).
5-(4-(((2S,6S)-6-(2-fluoroethyl)-6-methyl-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (435) was obtained using the method described for Example 405, except (2S,6S)-6-((4-bromophenoxy)methyl)-2-(methoxymethyl)-2-methyl-1,4-dioxane was replaced with (2S,6S)-6-((4-bromophenoxy)methyl)-2-(2-fluoroethyl)-2-methyl-1,4-dioxane. 1H NMR (500 MHz, DMSO-d6) δ 13.65 (s, 1H), 8.47 (s, 1H), 8.29 (s, 1H), 8.19 (s, 1H), 7.28 (d, J=8.6 Hz, 2H), 7.05 (d, J=8.6 Hz, 2H), 4.64 (t, J=6.1 Hz, 1H), 4.55 (t, J=6.1 Hz, 1H), 4.19 (dq, J=10.6, 4.6 Hz, 1H), 4.03-3.95 (m, 2H), 3.90 (dd, J=11.3, 3.0 Hz, 1H), 3.53 (d, J=11.3 Hz, 1H), 3.29 (dt, J=11.1, 5.4 Hz, 2H), 1.92-1.72 (m, 2H), 1.34 (s, 3H). LCMS Rt=4.01 min, m/z=459.0 (M+H).
To a stirring solution of 2-((2S,6S)-6-((4-bromophenoxy)methyl)-2-methyl-1,4-dioxan-2-ylethan-1-ol (54 mg, 0.162 mmol) in dry DCM (1 mL) was added DAST (0.043 mL, 0.324 mmol) and the mixture stirred at RT for 1 hour. The reaction was quenched with sat. NaHCO3 and stirred until gas evolution ceased. The mixture was concentrated and purified via silica gel chromatography (ISCO, 0 to 25% ethyl acetate/heptane) to give (2S,6S)-6-((4-bromophenoxy)methyl)-2-(2-fluoroethyl)-2-methyl-1,4-dioxane. LCMS Rt=0.84 min, m/z=313.2, 315.2 (M−HF).
5-(4-(((2S,6R)-6-((2-fluoroethoxy)methyl)-6-methyl-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (436) was obtained using the method described for Example 405, except (2S,6S)-6-((4-bromophenoxy)methyl)-2-(methoxymethyl)-2-methyl-1,4-dioxane was replaced with (2R,6S)-6-((4-bromophenoxy)methyl)-2-((2-fluoroethoxy)methyl)-2-methyl-1,4-dioxane. 1H NMR (500 MHz, DMSO-d6) δ 8.47 (s, 1H), 8.29 (s, 1H), 8.19 (s, 1H), 7.28 (d, J=8.7 Hz, 2H), 7.05 (d, J=8.8 Hz, 2H), 4.58 (t, J=4.0 Hz, 1H), 4.49 (t, J=4.0 Hz, 1H), 4.20 (dtd, J=10.4, 4.7, 2.8 Hz, 1H), 4.02-3.93 (m, 2H), 3.90 (dd, J=11.3, 2.9 Hz, 1H), 3.79-3.61 (m, 2H), 3.55 (d, J=11.3 Hz, 1H), 3.42-3.38 (m, 3H), 3.33-3.27 (m, 1H), 1.32 (s, 3H). LCMS Rt=3.21 min, m/z=489.3 (M+H).
Step 1: To a microwave vial was added (2R,6S)-6-((4-bromophenoxy)methyl)-2-(iodomethyl)-2-methyl-1,4-dioxane (100 mg, 0.234 mmol) in dry DMSO (1 mL), followed by cesium hydroxide monohydrate (117 mg, 0.702 mmol) and 2-fluoroethanol (0.069 mL, 1.17 mmol). The reaction was then heated to 80° C. for 1 hour. Then allyl alcohol (0.191 mL, 2.81 mmol) and additional cesium hydroxide monohydrate (235 mg, 1.40 mmol) were added and the reaction continued at 80° C. for 1 hour. Additional allyl alcohol (0.096 mL, 1.40 mmol) and cesium hydroxide monohydrate (117 mg, 0.702 mmol) were added, and the reaction continued at 80° C. for 5 hours. The reaction was diluted with water, extracted with ether and washed with brine, dried over sodium sulfate and concentrated to give a crude mixture of (2S,6S)-2-((allyloxy)methyl)-6-((4-bromophenoxy)methyl)-2-methyl-1,4-dioxane and (2R,6S)-6-((4-bromophenoxy)methyl)-2-((2-fluoroethoxy)methyl)-2-methy-1,4-dioxane that was used directly in the next step without further purification. LCMS Rt=0.68 min, m/z=353.3, 355.3 (M+H) for (2S,6S)-2-((allyloxy)methyl)-6-((4-bromophenoxy)methyl)-2-methyl-1,4-dioxane; LCMS Rt=0.82 min, m/z=363.3, 365.3 (M+H) for (2R,6S)-6-((4-bromophenoxy)methyl)-2-((2-fluoroethoxy)methyl)-2-methyl-1,4-dioxane.
Step 2: A 50 mL flask was charged with the crude mixture of (2S,6S)-2-((allyloxy)methyl))-6-((4-bromophenoxy)methyl)-2-methyl-1,4-dioxane and (2R,6S)-6-((4-bromophenoxy)methyl)-2-((2-fluoroethoxy)methyl)-2-methyl-1,4-dioxane (84 mg) and dry MeOH (2 mL) and cooled to −78° C. Ozone was then bubbled through for 10 minutes at −78° C. Ozone generation was stopped, O2 was bubbled through for a minute, followed by bubbling with N2 for another minute. The flask was warmed to 0° C., and sodium borohydride (36 mg, 0.951 mmol) was added in one portion, and the reaction stirred at 0° C. for 10 min. The crude was purified via silica gel chromatography (ISCO, 0 to 60% ethyl acetate/heptane) to give 2-(((2S,6S)-6-((4-bromophenoxy)methyl)-2-methyl-1,4-dioxan-2-yl)methoxy)ethan-1-ol and (2R,6S)-6-((4-bromophenoxy)methyl)-2-((2-fluoroethoxy)methyl)-2-methyl-1,4-dioxane. LCMS Rt=0.70 min, m/z=361.2, 363.2 (M+H) for 2-(((2S,6S)-6-((4-bromophenoxy)methyl)-2-methyl-1,4-dioxan-2-yl)methoxy)ethan-1-ol; LCMS Rt=0.82 min, m/z=363.2, 365.2 (M+H) for (2R,6S)-6-((4-bromophenoxy)methyl)-2-((2-fluoroethoxy)methyl)-2-methyl-1,4-dioxane.
(2R,6S)-6-((4-bromophenoxy)methyl)-2-((2-fluoroethoxy)methyl)-2-methyl-1,4-dioxane was also obtained using the method for the synthesis of (2S,6S)-6-((4-bromophenoxy)methyl)-2-(2-fluoroethyl)-2-methyl-1,4-dioxane, except 2-((2S,6S)-6-((4-bromophenoxy)methyl)-2-methyl-1,4-dioxan-2-yl)ethan-1-ol was replaced with 2-(((2S,6S)-6-((4-bromophenoxy)methyl)-2-methyl-1,4-dioxan-2-yl)methoxy)ethan-1-ol. LCMS Rt=0.82 min, m/z=363.2, 365.2 (M+H).
5-(4-(((2S,6R)-6-cyclopropyl-6-methyl-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (437) was obtained using the method described for Example 405, except (2S,6S)-6-((4-bromophenoxy)methyl)-2-(methoxymethyl)-2-methyl-1,4-dioxane was replaced with (2R,6S)-6-((4-bromophenoxy)methyl)-2-cyclopropyl-2-methyl-1,4-dioxane. 1H NMR (400 MHz, DMSO-d6) δ=9.00 (br s, 1H), 8.15 (br s, 1H), 7.72 (m, 1H), 7.23 (d, J=8.0 Hz, 2H), 7.01 (d, J=8.4 Hz, 2H), 4.45 (m, 1H), 3.97 (m, 3H), 3.54 (m, 1H), 3.23 (m, 2H), 1.45 (m, 1H), 0.80 (s, 3H), 0.63 (m, 1H), 0.54 (m, 1H), 0.46 (m, 1H), 0.30 (m, 1H). LCMS: Rt=0.91 min, m/z=453.1 (M+H). Chiral HPLC: Rt=3.12 min, ee value=100%.
Step 1: A solution of 2-cyclopropylprop-2-en-1-ol (900 mg, 9.17 mmol) in dry THF (2 mL) was added to a suspension of NaH (459 mg, 11.48 mmol, 60% of purity) in dry THF (5 mL) at 30° C., and the mixture stirred at 30° C. for 1 hr. Then a solution of (S)-2-((4-bromophenoxy)methyl)oxirane (1.05 g, 4.59 mmol) in dry THF (5 mL) was added and the mixture stirred at 40° C. for 19 hrs. The reaction was quenched with water (100 mL) and the mixture extracted with EA (50 mL×3). The organic layers were combined, dried over anhydrous Na2SO4, filtered and concentrated to give a residue which was purified by Prep-HPLC to give (S)-1-(4-bromophenoxy)-3-((2-cyclopropylallyl)oxy)propan-2-ol. LCMS: Rt.=0.88 min, (M+H)=327.0/328.9. 1H NMR (400 MHz, CDCl3) δ=7.39-7.35 (m, 2H), 6.82-6.79 (m, 2H), 4.90-4.79 (m, 2H), 4.19 (m, 1H), 4.02-4.00 (m, 4H), 3.61-3.58 (m, 2H), 1.40 (m, 1H), 0.68-0.66 (i, 2H), 0.50-0.48 (i, 2H).
Step 2: To a solution of (S)-1-(4-bromophenoxy)-3-((2-cyclopropylallyl)oxy)propan-2-ol (700 mg, 2.14 mmol), NaHCO3 (539 mg, 6.42 mmol, in MeCN (7 mL) was added I2 (1.6 g, 6.42 mmol). Then the mixture was stirred at 30° C. for 16 hrs. The reaction mixture was quenched with saturated aq·Na2SO3 (100 mL) and extracted with EA (50 mL×2). The combined organic layers were dried over anhydrous Na2SO4, filtered and concentrated to give crude product which was purified by Prep-HPLC to give (2R,6S)-6-((4-bromophenoxy)methyl)-2-cyclopropyl-2-(iodomethyl)-1,4-dioxane (Peak 1) and (2S,6S)-((4-bromophenoxy)methyl)-2-cyclopropyl-2-(iodomethyl)-1,4-dioxane (Peak 2).
Peak 1: LCMS: Rt.=1.26 min, (M+H)=453.0/454.9. 1H NMR (400 MHz, CDCl3) δ=7.39 (m, 2H), 6.83 (m, 2H), 4.54 (m, 1H), 4.02 (m, 1H), 3.93 (m, 2H), 3.51 (m, 3H), 3.19 (m, 1H), 3.08 (m, 1H), 1.16 (m, 1H), 1.06 (m, 1H), 0.74 (m, 1H), 0.60 (m, 1H), 0.23 (m, 1H).
Peak 2: LCMS: Rt.=1.29 min, (M+H)=453.0/454.9. 1H NMR (400 MHz, CDCl3) δ=7.39 (m, 2H), 6.79 (m, 2H), 4.07 (m, 1H), 3.95 (m, 3H), 3.81 (m, 2H), 3.75 (m, 1H), 3.61 (m, 1H), 3.41 (m, 1H), 3.28 (m, 1H), 0.90 (m, 1H), 0.68 (m, 1H), 0.45 (m, 2H), 0.32 (m, 1H).
Step 3: A solution of lithium triethylborohydride in THF (1.0 M, 2.43 ml, 2.43 mmol) was added drop-wise to a solution of (2R,6S)-6-((4-bromophenoxy)methyl)-2-cyclopropyl-2-(iodomethyl)-1,4-dioxane (220 mg, 0.486 mmol) in THF (5.6 mL) for 0.5 hrs at 0° C. The ice bath was removed at the completion of the addition, and the reaction mixture was allowed to warm to room temperature over 20 minutes. The mixture was then heated at 80° C. for 1 hr and allowed to cool to room temperature. After careful addition of saturated aqueous sodium bicarbonate solution (20 mL), the mixture was extracted with EA (3×20 mL). The combined organic layers were dried over sodium sulfate, filtered, and concentrated in vacuo. The residue was purified by Prep-TLC (PE:EA=4:1) to give (2R,6S)-6-((4-bromophenoxy)methyl)-2-cyclopropyl-2-methyl-1,4-dioxane. TLC:PE:EA=5:1, Rf=0.7. LCMS: Rt=1.11 min, m/z=327.0 (M+H).
5-(4-(((2S,6R)-6-cyclopropyl-6-(methoxymethyl)-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (438) was obtained using the method described for Example 405, except (2S,6S)-6-((4-bromophenoxy)methyl)-2-(methoxymethyl)-2-methyl-1,4-dioxane was replaced with (2R,6S)-6-((4-bromophenoxy)methyl)-2-cyclopropyl-2-(methoxymethyl)-1,4-dioxane. 1H NMR (400 MHz, DMSO-d6) δ=8.47 (br s, 1H), 7.96 (s, 1H), 7.79 (br s, 1H), 7.00 (d, J=8.4 Hz, 2H), 6.76 (d, J=8.4 Hz, 2H), 3.85 (m, 1H), 3.67 (m, 2H), 3.61 (m, 1H), 3.55 (m, 2H), 3.08 (s, 3H), 3.06 (m, 2H), 2.93 (m, 1H), 0.68 (m, 1H), 0.17 (m, 2H), 0.02 (m, 2H). LCMS: Rt=0.92 min, m/z=483.2 (M+H). Chiral HPLC: Rt=2.94 min, de value=100%.
To a solution of (2S,6S)-6-((4-bromophenoxy)methyl)-2-cyclopropyl-2-(iodomethyl)-1,4-dioxane (300 mg, 0.66 mmol) in DMSO (3 mL) was added MeOH (106 mg, 3.30 mmol) and CsOH—H2O (337 g, 1.98 mmol) at 25° C. The reaction mixture was stirred at 80° C. for 2 hrs. The combined mixture was washed with H2O (10 ml) and extracted with EA (10 mL×2). The organic layer were combined, washed with brine (10 mL×2), dried over anhydrous Na2SO4, filtered and concentrated. The residue was purified by column chromatography (PE/EA=10/1) to give (2R,6S)-6-((4-bromophenoxy)methyl)-2-cyclopropyl-2-(methoxymethyl)-1,4-dioxane. LCMS: Rt=0.897, 0.924 min, m/z=357.0, 359.0 (M+H).
5-(4-(((2S,6S)-6-cyclopropyl-6-(methoxymethyl)-1,4-dioxan-2-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (439) was obtained using the method described for Example 405, except (2S,6S)-6-((4-bromophenoxy)methyl)-2-(methoxymethyl)-2-methyl-1,4-dioxane was replaced with (2S,6S)-6-((4-bromophenoxy)methyl)-2-cyclopropyl-2-(methoxymethyl)-1,4-dioxane. 1H NMR (400 MHz, DMSO-d6) δ=8.86 (br s, 1H), 8.20 (s, 1H), 7.98 (br s, 1H), 7.25 (d, J=8.4 Hz, 2H), 7.03 (d, J=8.4 Hz, 2H), 4.45 (m, 1H), 3.99 (m, 2H), 3.43 (m, 1H), 3.39 (m, 2H), 3.13 (s, 3H), 3.10 (m, 2H), 1.07 (m, 1H), 0.80 (m, 1H), 0.57 (m, 1H), 0.43 (m, 1H), 0.33 (m, 1H), 0.31 (m, 1H). LCMS: Rt=0.90 min, m/z=483.3 (M+H). Chiral HPLC: Rt=3.26 min, de value=98.94%.
(2S,6S)-6-((4-bromophenoxy)methyl)-2-cyclopropyl-2-(methoxymethyl)-1,4-dioxane was obtained using the procedure for the synthesis of (2R,6S)-6-((4-bromophenoxy)methyl)-2-cyclopropyl-2-(methoxymethyl)-1,4-dioxane, except (2S,6S)-6-((4-bromophenoxy)methyl)-2-cyclopropyl-2-(iodomethyl)-1,4-dioxane was replaced with (2R,6S)-6-((4-bromophenoxy)methyl)-2-cyclopropyl-2-(iodomethyl)-1,4-dioxane.
5-(4-(((5R,7S)-2,6,9-trioxaspiro[4.5]decan-7-yl)methoxy)phenyl)-2-oxo-6-(trifluoromethyl)-1,2-dihydropyridine-3-carboxamide (440) was obtained after chiral SFC separation of the product obtained using the method described for Example 405, except (2S,6S)-6-((4-bromophenoxy)methyl)-2-(methoxymethyl)-2-methyl-1,4-dioxane was replaced with (7S)-7-((4-bromophenoxy)methyl)-2,6,9-trioxaspiro[4.5]decane. 1H NMR: (400 MHz, DMSO-d6), δ=8.88 (s, 1H), 8.19 (s, 1H), 7.97 (s, 1H), 7.24 (d, J=8.4 Hz, 2H), 7.02 (d, J=8.4 Hz, 2H), 4.07 (m, 3H), 3.94 (m, 2H), 3.84 (m, 3H), 3.68 (m, 1H), 3.48 (m, 2H), 1.89-1.70 (m, 2H). LCMS: Rt=0.84 min, m/z=455 (M+H). Chiral HPLC: Rt=1.67 min, de value=100%, AS-3-MeOH(DEA)-5-40-3 mL-35T.
Step 1: To a solution of 3-vinyltetrahydrofuran-3-ol (10 g, 88 mmol) and 2,6-lutidine (28 g, 264 mmol) in DCM (100 mL) was added TBSOTf (46 g, 176 mmol) under N2 at −20° C. Then the mixture was stirred at 25° C. for 1 hr. The reaction mixture was poured into water (200 mL). The resulting mixture was extracted with DCM (200 mL×2). The combined organic layers were dried over anhydrous Na2SO4, filtered and concentrated to give crude product which was purified by column chromatography (PE:EA=10:1) to give tert-butyldimethyl((3-vinyltetrahydrofuran-3-yl)oxy)silane. 1H NMR (400 MHz, CDCl3) δ=6.01 (m, 1H), 5.32 (m, 1H), 5.14 (m, 1H), 4.08 (m, 1H), 3.99 (m, 1H), 3.82 (m, 1H), 3.72 (m, 1H), 2.13 (m, 2H), 0.91 (s, 9H), 0.11 (m, 6H).
Step 2: To a solution of tert-butyldimethyl((3-vinyltetrahydrofuran-3-yl)oxy)silane (18 g, 78.9 mmol) in MeOH (10 mL) was stirred at −78° C. under 03 (15 psi) for 1 hr. The mixture was warmed at 0° C. then added NaBH4 (3.6 mg, 94.7 mmol) and stirred for 1 hr. The reaction mixture was concentrated to give crude product which was purified by column chromatography (PE:EA=10:1˜5:1) to give (3-((tert-butyldimethylsilyl)oxy)tetrahydrofuran-3-yl)methanol. 1H NMR (400 MHz, CDCl3) δ=4.05 (m, 1H), 3.90 (m, 1H), 3.77 (m, 1H), 3.67 (s, 1H), 2.74 (s, 1H), 2.00 (m, 2H), 0.93 (s, 10H), 0.10 (s, 6H).
Step 3: NaH (484 mg, 11.6 mmol) was added to a solution of (3-((tert-butyldimethylsilyl)oxy)tetrahydrofuran-3-yl)methanol (4.5 g, 19.4 mmol) in NMP (50 mL) at 0° C. and the mixture stirred at 0° C. for 1 hr. (R)-2-((4-bromophenoxy) methyl)oxirane (2.2 g, 9.7 mmol) was added and the mixture stirred at 80° C. for 16 hrs. The reaction mixture was poured into water (50 mL) and the resulting mixture extracted with EA (50 mL×2). The combined organic layers were dried over anhydrous Na2SO4, concentrated to give crude product which was purified by reverse phase column (FA) to give 3-(((R)-3-(4-bromophenoxy)-2-hydroxypropoxy)methyl)tetrahydrofuran-3-ol. LCMS: Rt=0.69 min, m/z=347.0, 349.0 (M+H).
Step 4: TsCl (1.3 g, 6.9 mmol) was added to a solution of 3-(((R)-3-(4-bromophenoxy)-2-hydroxypropoxy)methyl)tetrahydrofuran-3-ol (1.2 g, 3.5 mmol), TEA (1.0 g, 10.4 mmol), DMAP (210 mg, 1.7 mmol) in DCM (12 mL) at 0° C. and the mixture stirred at 25° C. for 72 hrs. The reaction mixture was poured into water (20 mL) and the resulting mixture extracted with DCM (20 mL×2). The combined organic layers were dried over anhydrous Na2SO4, filtered and concentrated to give crude product which was purified by reverse phase column (FA) to give (2R)-1-(4-bromophenoxy)-3-((3-hydroxytetrahydrofuran-3-yl)methoxy)propan-2-yl 4-methylbenzenesulfonate. 1H NMR (400 MHz, CDCl3) δ=7.82 (m, 2H), 7.39 (m, 4H), 6.69 (m, 2H), 4.99 (m, 1H), 4.13 (m, 2H), 4.03 (m, 1H), 3.89 (m, 1H), 3.85 (m, 2H), 3.72 (m, 4H), 2.47 (s, 3H), 1.98 (m, 2H).
Step 5: NaH (15 mg, 0.36 mmol) was added to a solution of (2R)-1-(4-bromophenoxy)-3-((3-hydroxytetrahydrofuran-3-yl)methoxy)propan-2-yl 4-methylbenzenesulfonate (120 mg, 0.24 mmol) in DMF (1 mL) at 0° C. and the mixture stirred at 25° C. for 16 hrs. The reaction mixture was poured into water (5 mL) and the resulting mixture extracted with EA (5 mL×2). The combined organic layers were dried over anhydrous Na2SO4, filtered and concentrated to give crude product which was purified by reverse phase column to give (7S)-7-((4-bromophenoxy)methyl)-2,6,9-trioxaspiro[4.5]decane. 1H NMR (400 MHz, CDCl3) δ=7.28 (m, 2H), 6.70 (m, 2H), 3.97 (m, 6H), 2.13 (m, 1H), 1.72 (m, 1H), 1.60 (m, 1H).
The activity of a compound disclosed herein may be assessed by the following in vitro and in vivo methods. Using the test assays described herein, provided compounds exhibit inhibitory efficacy in accordance with Table 1.
For influenza NA assays, MDCK cells were plated in Phenol Red-free DMEM (Gibco) supplemented with 2 mM L-Glutamine, 1% sodium pyruvate (Cellgro, Manassas, VA) and 0.1% BSA at cell densities of 1.8×104 cells/well in 384-well format. Compounds were added to the cells 2 hours pre-infection. Infections were performed at MOI 0.005 and the plates were incubated at 37° C., 5% CO2 for 48 hours. Following incubation, neuraminidase activity was evaluated with the NA assay kit (ThermoFisher, Carlsbad, CA). For cell toxicity measurement, CellTiter-Glo® (Promega, Madison, WI) was added to treated cells according to manufacturer's instructions.
For influenza A virus minigenome reporter assays, 293T cells were transfected with expression vectors encoding PB2, PB1, PA, NP proteins and an influenza A Luciferase reporter plasmid. Cells were harvested in Dulbecco's modified Eagle's medium (DMEM) minus phenol red, supplemented with 10% heat inactivated FBS (fetal bovine serum), 1% sodium pyruvate and 1% L-glutamine (Cellgro, Manassas, VA). The five plasmids were co-transfected with Fugene 6 transfection reagent (Promega, Madison, WI) with a 1:3 ratio DNA (μg):Fugene 6 (μl), in OptiMEM® (Gibco, Carlsbad, CA). Transfections were performed at cell densities of 1.8×104 cells/well in 384-well format. Compounds were added 2 hours post-transfection, and plates were incubated at 37° C., 5% CO2 for 48 hours. Following incubation, cells were lysed and luciferase production quantified by addition of Britelite Plus® (Perkin-Elmer, Waltham, MA). For cell toxicity measurement, CellTiter-Glo® (Promega, Madison, WI) was added to treated cells following manufacturer's instructions.
This application claims the benefit of and priority to U.S. Provisional Patent Application Ser. No. 63/224,691, filed Jul. 22, 2021, the content of which is incorporated herein by reference in its entirety.
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/IB2022/056778 | 7/22/2022 | WO |
| Number | Date | Country | |
|---|---|---|---|
| 63224691 | Jul 2021 | US |
