WO2015057945A1 - Hepatitis b viral assembly effectors - Google Patents

Abstract

Novel assembly effector compounds having a therapeutic effect against hepatitis B viral (HBV) infection are disclosed. Assembly effector molecules described herein can lead to defective viral assembly and also may affect other viral activities associated with chronic HBV infection. Also disclosed is a process to synthesize disclosed compounds, method of treatment of HBV by administration of disclosed compounds, and use of these compounds in the manufacture of medicaments against HBV.

Description

HEPATITIS B VIRAL ASSEMBLY EFFECTORS

RELATED APPLICATIONS

[0001 j This application claims the benefit of and priority to United States Provisional

Patent Application serial number 61/892,591, filed October 18, 2013; the contents of which are hereby incorporated by reference.

STATEMENT OF GOVERNMENT SUPPORT f 002] This invention was made with government support under ΑΪ0674 i 7 awarded by the National Institutes of Health. The government has certain rights in the invention.

BACKGROUND

[0003] Hepatitis B (HBV) causes viral hepatitis that can farther lead to chronic liver disease and increase the risk of liver cirrhosis and liver cancer (hepatocellular carcinoma). Worldwide, more than 2 billion people have been infected with HBV, around 360 million people are chronically infected and every year HBV infection causes more tha one million deaths, HBV can be spread by body fluids: from mother to child, by sex, and via blood products. Children born to HBV-positive mothers may also be infected, unless vaccinated at birth.

[0004J At present, chronic HBV is primarily treated with nucleosides/nucleotides (e.g. entecavir) that suppress the virus while the patient remains on treatment but do not eliminate the infection, even after many year's of treatment. Once a patient starts taking nucleotide analogs most must continue taking them or risk the possibility of a life threatening immune response to viral rebound. Further, antiviral nucleoside therapy may lead to the emergence of antiviral drug resistance.

(0005] The only FDA approved alternative to antiviral nucleoside/nucleotide analogs is treatment with interferon a or pegylated interferon, . Unfortunately, the adverse event incidence and profile of inter.fero.n-a can result in poor tolerability, and many patients are unable to complete therapy. Moreover, only a small percentage of patients are considered appropriate for interferon therapy, as only a small subset of patients who present with low viral loads and transaminitis greater than 2x the upper limit of normal are likely to have a sustained clinical response to a year-long course of interferon therapy. As a result, interferoo-based therapies are used in only a small percentage of all diagnosed patients who elect for treatment.

|0006J Thus, current HBV treatments can range from palliative to benign neglect.

Nucleoside analogs suppress virus production, treating the symptom, but leave the infection intact. Interferon a has severe side effects and less iolerability among patients and is successful as a finite treatment strategy in only a small minority of patients. There is a clear on-going need for more effective treatments for HBV infections.

SUMMARY

{00073 The present disclosure is directed in pan to 2,4-diaminopyrimidine compounds having activity against hepatitis B virus, for example, by affecting assembly of viral capsid proteins. For example, disclosed compounds may be considered CpAMs core protein a! foste ic modifiers— which can lead to defective viral capsid assembly. Without being bound by any theory, such CpAMs may affect steps "upstream" of capsid assembly by altering the concentrations of Cp (core protein) available as dinners as compared to capsid or other nrultirneric forms. Disclosed compounds or CpAMs may noticeably affect functions upstream of viral assembly, such as interfering with cccDNA transcription, RNA stability and/or protein- protein interactions.

[0008] I one aspect, the present invention provides a pharmaceutical composition comprising', (i) a compound of Formula I having the structure:

Formula 1

or a pharmaceutically acceptable salt or stereoisomer thereof, wherein:

X is selected from the group consisting of ^p and

q is 0, 1 , 2, 3 or 4;

p is 0, 1, 2, 3, or 4; is O, 1 , 2. 3, or 4;

R^! is independently for each occurrence selected from the group consisting of -H, ~C|- Ccalkyl, -Ci-C₆aikoxy, -Ci ¼alkyl-0-Ci-C_f;alkyl, halogen, cyano, -OH, -C(0)B, ~C0₂R', - C(0)N(R')(R"), -C(0)Cj-C6alkyi, - (R')(R")_S -NO¾ -N(R')C(0)Ci-C₆a1kyi, -S(OVCr C₆alkyi, - (R^?)S(0)_w-C C6 ikyi₅ and -S(0)_w-N(R')(R");

w is 0, 1 or 2;

R' is independently for each occurrence selected from the group consisting of -H and ~Cj-

R" is independently for each occurrence selected from the group consisting of ~H and - CrC_f>alkyl; or R' and R" are taken together with the nitrogen atom to which they are attached to form a 4-7 membered heterocyclic ring;

R^" is independently for each occurrence selected from the group consisting of -11, ~Ci- Csalk l, ~C]-Qal.koxy, -Ci-C<;aJkyI-0~Ci-C6alkyl, halogen, cyano, -OH. ~C(0)H, -CO2R', - C(0)N(R')(R"X -C(0)C_rC_(iaikyL - fR'XR"), - ¾ ~N(R0QO)t>C₆alk l, ~S{0)_w-C_r Cealkyl, -N(R S(OVCi -Chalky!, and -S(PVN(R')(R"); and

R* is selected from the group consisting of -H and -Ci-Gsalkyl;

wherein CrC«alkyl or Cj-Csalkoxy may be independently for each occurrence optionally substituted with, one, two, or three halogens; and

(i.i) a pharmaceutically acceptable excipient.

{ΌΘ09] In another aspect, the present disclosure provides a method of treating, ameliorating, preventing, or substantially delaying a hepatitis B viral infection in an individual, the method comprising administering to the individual a pharmaceutical composition disclosed herein.

(00! .0] In another aspect, the present disclosure relates to use of a compound, of Formula

1 , Formula I-A. or Formula l-B in the manufacture of^" a medicament, for the treatment of a hepatitis 8 viral infection.

DETAILED DESCRIPTION

Dejlnjticms

£001 I] The features and other details of the disclosure will now be more particularly described. Before further description of the present invention, certain terms employed in the specification, examples and appended claims are collected here. These definitions should he read in light of the remai nder of the disclosure and understood as by a person of ski ll in the art Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood b a person of ordinar skill in the art.

f Wi 2 J As intended herein, the terms " " and "an" include singular as well as plural references unless the context clearly dictates otherwise. For example, the term "an assembly effector" can include one or more such effectors.

[0013] "Treating" includes any effect, e.g., lessening, reducing, modulating, or eliminating, that results in the improvement of the condition, disease, disorder and the like.

[0014] The terra "alkenyl" as used herein refers to an unsaturated straight or branched hydrocarbon having at least one carbon-carbon double bond, such as a straight or branched group of 2-6 or 3-4 carbon atoms, referred to herein for example as C-2-C-6 alkenyl, and CVC* alkenyl, respectively. Exemplary alkenyl groups include, but are not limited to, vinyl, aliyl, butenyl, entenyi, etc.

[00] 5] The term "alkoxy" as used herein refers to a straight or branched alky! group attached to an oxygen (a!kyl-O-). Exemplary alkoxy groups include, but are not limited to, groups with an alkyl group of 1-6 or 2-6^" carbon atoms, referred to herein as O-Ce alkoxy, and Cj-Q alkoxy, respectively. Exemplary alkoxy groups include, but are not limited to rnethoxy, ethoxy, isopropoxy, etc.

[0016] The term "alkyl" as used herein refers to a saturated straight or branched hydrocarbon, such as a straight or branched group of 1-6, 1-4, or 1-3 carbon atoms, referred to herein as CrQ_> alkyl, CrC₄ alkyl, and Cj- alkyl, respectively.. Exemplary alkyl groups include, but are not limited to, methyl, ethyl, propyl, isopropyl, 2-methy - 1 -propyl, 2~methyl-2- propyl, 2-raeth.yl- l -butyl, 3 -methyl- 1 -butyl, 3-methyl-2-butyL 2,2-dimethyl- i -propyl, 2-methyl- .1 -pentyl, 3-methy 1- 1 -pentyl, 4-methyl-l -pentyl, 2~methyi-2-pentyl, 3-methyl-2-pe«tyl ., 4-methyl- 2-pentyl, 2,2-dlmef yl- 1 -butyl, 3,3-dtmethyl- 1 -butyl, 2-ethyl- -butyl, butyl, isobutyl, t-butyl, pentyl, isopenryl, neopentyl, hex l, etc.

[0017] The term "alkytiyl" as used herein refers to an unsaturated straight or branched hydrocarbon having at least one carbon-carbon triple bond, such as a straight or branched group of 2-6, or 3-6 carbon atoms, referred to herein as C , alkynyl and C3-Q a^'lkynyl, respectively. Exemplary alkynyl groups include, but are not limited to, ethynyi propynyi, batynyl, pentynyl, hexynyl, methy!propynyl, etc.

JOOISJ The term "eycloalkoxy" as used herein refers to a cycloalkyl group attached to an oxygen (cycloalkyi-0-).

[001 j The term "cycloalkyP as used herein refers to a monocyclic saturated or partially unsaturated hydrocarbon group of, for example 3-6, or 4-6 carbons, referred to herein, e.g., as C3-C6 cycloalkyl or C¾~Cs cycloalkyl. Exemplary cycloalkyl groups include, bui are not limited to, cyclohexane, cyclohexene, cyelopentane, cyclobutane or, cyclopropane.

10020] Tiie terms "halo" or "halogen" as used herein refer to F, CI, Br, or L

(0021 j The terms "hydroxy" and "hydroxyl" as used herein refers to the radical -OH,

[0022] "Phannaceutieally or pharmacologically acceptable" include molecular entities and compositions that do not produce an adverse, allergic or other untoward reaction when administered to an animal, or a human, as appropriate. For human administration, preparations should meet sterility, pyrogenicity, general safety, and purity standards as required by FDA Office of Biologies standards.

[0023] The term "phannaceutieally acceptable carrier" or "pharmaceutically acceptable excipient" as used herein refers to any and all solvents, dispersion media, coatings, isotonic and absorption delaying agents, and the like, that are compatible with pharmaceutical administration. The use of such media and agents for pharmaceutically active substances is well known in the art.. The compositions may also contain other active compounds providing supplemental, additional, or enhanced therapeutic functions.

[0024] The term "pharmaceutical composition" as used herein refers to a composition comprising at least one compound as disclosed herein formulated together with one or more pharmaceutically acceptable carriers,

(0025] "Individual," "patient," or "subject" are used interchangeably and include any animal, including mammals, preferably mice, rats, other rodents, rabbits, dogs, cats, swine, cattle, sheep, horses, or primates, and most preferably humans. The compounds of the invention can be administered to a mammal, such as a human, but can also be administered to other mammals such as an animal in need of veterinary treatment, domestic animals {e,g., dogs, cats, and the like), farm animals (e.g., cows, sheep, pigs, horses, and the like) and laboratory animals (e.g., rats, mice, guinea pigs, and the like). The mammal treated in the methods of the invention is desirably a mammal in which treatment of hepatitis 8 is desired. "Modulation" includes antagonism (e.g., inhibition), agonism, partial antagonism and/or partial agonism.

[0026] In the present disclosure, the term "therapeutically effective amount" means the amount of the subject compound ihat will elicit the biological or medical response of a tissue, system, animal or human that is being sought by the researcher, veterinarian, medical doctor or other clinician. The compounds of the invention are administered in therapeutically effective amounts to treat a disease.

[ 027J The term "pharmaceutically acceptable salt(s)" as used herein refers to salts of acidic or basic groups thai may be present in compounds used in the present compositions. Compounds included in the present compositions that are basic in nature are capable of forming a wide variety of salts with various inorganic and organic acids, The acids that may be used to prepare pharmaceutically acceptable acid addition salts of such basic compounds are those that form non-toxic acid addition salts, i.e., salts containing pharmacologically acceptable anions, including but not limited to malate, oxalate, chloride, bromide, iodide, nitrate, sulfate, bisu!fate, phosphate, acid phosphate, isonicotmate, acetate, lactate, salicylate, citrate, tartrate, oleate, tannate, pantothenate, bi tartrate, ascorbate, succinate, ma!eate, gentisinate, funiarate, gluconate, glucaronate, saecharate, formate, benzoate, glutamate, .raeihanesuifonaie, ethanesulfonate, benzenesulfonate, /Moluenesulfonate and pamoate (i.e., l , r-methyiene~bis-(2-hydroxy-3- naphthoate)) salts. Compounds included in the present compositions that are acidic in nature are capable of forming base salts with various pharmacologically acceptable cations. Examples of such salts include alkali metal or alkaline earth metal salts and, particularly, calcium, magnesium, sodium, lithium, zinc, potassium, and iron salts. Compounds included in the present compositions that include a basic or acidic moiety may also form pharmaceutically acceptable salts with various amino acids. The compounds of the disclosure may contain both acidic and basic groups; for example, one amino and one carhoxyiic acid group. In such a case, the compound can exist as an acid addition salt, a zwitterion, or a base salt.

[0028] The compounds of the disclosure may contain one or more chiral center and/or double bonds and, therefore, exist as stereoisomers, such as geometric isomers, enantiomers or diastereomers. The term "stereoisomers" when used herein consist of all geometric isomers, enantiomers or diastereomers. These compounds may be designated by the symbols "R." or "S," depending on the configuration of substituents around the stereogemc carbon atom. The present invention encompasses various stereoisomers of these compounds and mixtures thereof Stereoi somers include enantiomers and diastereomers. Mixtures of enantiomers or diastereomers may be designated ^**(±)^** in nomenclature, but the ski lled artisan will recognize thai a structure may denote a chirai center implicitly.

|0ϋ29] The compounds of the disclosure may contain one or more chirai centers and/or double bonds and, therefore, exist as geometric isomers, enantiomers or diastereomers. The enantiomer and diasiereomers may be designated by the symbols "(·+·)_>" "(-).'^" or "S," depending on the configuration of substituents around the stereogenic carbon atom, but the skilled artisan will recognize that a structure may denote a chirai center implicitly. Geometric isomers, resulting from the arrangement of substiiuents around a carbon-carbon double bond or arrangement of substiiuents around a cycloalkyl or heterocyclic ring, can also exist in the compounds of the present invention. The symbol denotes a bond that may be a single, double or triple bond as described herein. Substiiuents around a carbon-carbon double bond are designated as being in the " or "E" configuration wherein the terms ^WZ" and are used in accordance with IUPAC standards. Unless otherwise specified, structures depicting double bonds encompass both the ^*7Γ' and "Z" isomers. Substiiuents around a carbon-carbon double bond alternatively can be referred to as "eis" or "trans," where "cis" represents substituents on the same side of the double bond and "trans" represents substituents on opposite sides of the double bond. The arrangement of substituents around a carbocyclic ring can also be designated as "cis" or "trans." The term "cis" represents substituents on the same side of the plane of the ring and the term 'trans" represents substituents on opposite sides of the plane of the ring. Mixtures of compounds wherein the substituents are disposed on both the same and opposite sides of plane of the ring are designated "cis trans."

{0030] The term "stereoisomers" when used herein consist of all geometric isomers, enantiomers or diastereomers. The present invention encompasses various stereoisomers of these compounds and mixtures thereof

[0031 J individual enantiomers and diasteriomers of compounds of the present invention can be prepared synthetically from commercially available starting materials that contain asymmetric or stereogenic centers, or by preparation of raceraic mixtures followed by resolution methods well known to those of ordinary skill in the art. These methods of resolution are exemplified by (I ) attachment of a mixture of enantiomers to a chirai auxiliary, separation of the resulting mixture of diasterioroers by recrystallizatson or chromatography and liberation of the optically pure product from the auxiliary, (2) salt formation employing an optically active resolving agent, (3) direct separation of the mixture of optical enaniiomers on chirai liquid chromatographic columns or (4) kinetic resolution using stereoselective chemical or enzymatic- reagents. Racemtc mixtures can also be resolved into their component enantiomers by well known methods, such as chiiral-phase gas chromatography or crystallizing the compound in a chiral solvent. Stereoselective syntheses, a chemical or enzymatic reaction in which a single reactant forms an unequal mixture of stereoisomers during the creation of a new stereocenter or during the transformation of a pre-existing one, are well known in the art. Stereoselective syntheses encompass both enantio- and diastereoseiective n-ansformations. For examples, see Carreira and Kvaerao, Classics in Stereoselective Synthesis, Wiley- VCH: Weinheim, 2009, {0032 j The compounds disclosed herein can exist in solvated as well as unsolvated forms with pharmaceutically acceptable solvents such as water, ethanol, and the like, and it is intended that the invention embrace both solvated and unsolvated forms. .In one embodiment, the compound is amorphous. In one embodiment., the compound is a polymorph, in another embodiment, the compound is in a crystalline form.

|0033| The invention also embraces isotopically-labeled compounds of the invention which are identical to those recited herein, except that one or more atoms are replaced by an atom having an atomic mass or mass number different from the atomic mass or mass number usually found in nature. Examples of isotopes thai can be incorporated into compounds of the invention include isotopes of hydrogen, carbon, nitrogen, oxygen, phosphorus, fluorine and chlorine, such as ¾ ³H, ^WC, ⁵⁴C, ^{5N, ¾, ⁱ 0, ³¹P, ^MP, ³⁵S, ^!¾F, and ^3<;C1, respectively. For example, a compound of the invention may have one or more H atom replaced with deuterium. {0034] Certain isotopically-labeled disclosed compounds (e.g., those labeled with ¾ and

C) are useful in compound and/or substrate tissue distribution assays. Tritiated (i.e., H) and carbon- 14 (i.e., ^l C) isotopes are particularly preferred for their ease of preparation and detectability. Further, substitutio with heavier isotopes such as deuterium (te., ~H) may afford certain therapeutic advantages resulting from greater metabolic stability (e.g., increased in vivo halt-life or reduced dosage requirements) and hence may be preferred in some circumstances. IsotopicalSy labeled compounds of the invention can generally be prepared by following procedures analogous to those disclosed in the e.g., Examples herein by substituting an isotopkail labeled reagent for a non-isoiopically labeled reagent,

[0035] The term "prodrug" refers to compounds that are transformed m vivo to yield a disclosed compound or a pharmaceutically acceptable salt, hydrate or solvate of the compound. The transformation may occur by various mechanisms (such as by esterase, amidase, phosphatase, oxidative and or reductive metabolism) in various locations (such as in the intestinal lumen or upon transit of the intestine, blood or liver). Prodrugs are well known in the art (for example, see Rautio, Kumpulainen, el al, Nature Reviews Drug Discovery 2008, 7, 255). For example, if a compound of the invention or a pharmaceutically acceptable salt, hydrate or solvate of the compound contains a carboxyl ic acid functional group, a pr odrug can comprise an ester formed by the replacement of the hydrogen atom of the acid group, for example with a group such as (€]~C$)alkyl₃ (CrC)2}alkanoyioxynieilryl, 1 -(alkanoyloxy )ethyl having from. 4 to 9 carbon atoms, i -meihyl~I~(alkanoyloxy)-eth i having from 5 to 10 carbon atoms, alkoxycarbonyloxyffieihyi having from 3 to 6 carbon atoms, 1 ~(alkoxycarbonyloxy)ethyl having from 4 to 7 carbon atoms, 1 -methyl- l-(alkoxycarbonyloxy)etliyl having from 5 to 8 carbon atoms, ;\-(alkoxycarbonyS)aminomethyi having from 3 to 9 carbon atoms, l -(A^(alkoxycarbonyl)amino)ethyl having from 4 to 10 carbon atoms, 3-phihaiidyl, 4-crotonolactonyl, gamma-biuyroiacton~4-yf di~AⁱvV~(Ci-C2) lk lamino(C'2-C; ^ k l (such as β~ dtmethylaminoethyl), carbamoyl -(Ct-C^jalkyl, A Aⁱ~di(C] -C2)alkylcarbamoyl-(Ci-'C2)alkyl and piperidino-, pyrrolidino- or nRH h.oiinofCa-C. aik l.

[0036] Similarly, if a compound of the invention contains an alcohol functional group, a prodrug can be formed by the replacement of the hydrogen atom of the alcohol group with a group such as, for example, (Cs-Cslalkanoyloxymeihyl, l -((C's„s)aSkanoyloxy)ethyL I-methyl-l-((CrC_fJ)aikanoyloxy)ethyi (Ci-Cf,)alk.oxycarbonyloxymeth.yi, N-(C|~C_$)alkoxycarbo.nylaminomethyl₅ suceinoyl, (CVQ_>)aikanoyl_} a-amino(€i~Q)aIkanoyI₅ arylacyl and ct-ammoacyl, or a-aminoacyl- -aminoacyi, wherein each a-aminoacyl group is independently selected from the naturally occurring L-amino acids; or F(0)(OH )2, -P(0)(0(C|-C6)aikyl)2, or g!ycosyl (th radical resulting from the removal of a hydroxyl group of the hemiacetal form of a carboh ydra te),

10037] if a compound of the invention incorporates an amine functional group, a prodrug can be formed, for example,, by creation of an amide or carbamate, an A¾eyloxyakyi derivative. an (oxodioxoleayI)raethyl derivative, an N- annicb base, inline or enamine. In addition, a secondary amine can be metabolically cleaved to generate a bioactive primary amine, or a tertiary amine can metabolically cleaved to generate a bioactive primary or secondary amine. For examples, see SimpHcio, et l, Molecules 2008, 13, 519 and references therein.

|0ϋ38] Tile present invention is based in part on the discovery of that certain classes of com pounds such as t hose described herein may acti vate assembl y of the viral capsid. independent of the norma! nucleating signals, e.g. act as core protein allosferic modulators having an effect against HBV. For example, disclosed compounds may activate assembly of the viral capsid independent of the normal nucleating signals.

{00391 Hepatitis B vims, for example, consists of an envelope, a nucleoeapsid core, viral

D A, and reverse transcriptase (RT). Infection starts when the virus enters the host. The viral core enclosing the viral DNA and the RT are then transferred to cytoplasm of the host and to the host's nucleus, a process in which the circular and partially double stranded viral DNA is released from the viral core.

(0040] Inside the nucleus, the viral DNA is converted into a covalently-closed circular

DNA (cccDNA), which codes for a pregenomic RNA (pg RNA) and other mRNAs. The pregenomic RNA, exported to the cytoplasm, codes for core protein and the reverse transcriptase. Encapsidation of the pregenomic RNA and the reverse transcriptase by core protein results in the formation of immature HBV cores which matiiraie as the pregenomic RN A is reverse transcribed to the circular and partially double stranded DNA, completing the cycle.

[00 .13 Central to HBV infection is the assembly of the viral core. The capsid itself is a complex of 120 copies of core protein homodimers that spontaneously self-assemble. In the presence of assembly effectors (AE) capsid assembly begins with an CpAM^»Cp (Assembly effec†or ^"ore protein) complex instead of waiting for the biological RT^«pgRNA nucleating complex; the resulting capsid is thus defective. CpAMs can leverage consumptio of a few molecules needed tor nucieation to consume for example up to 1 17 Cp diniers. To nucleate assembly, in some embodiments, CpAMs may have one or both of activities such as substantially interacting with or e.g., binding to Cp dimers, activating assembly, and/or substantially binding or interacting with capsids at e.g.. a higher affinity as compared to binding to the Cp dimer. |O042 Core proteins also have roles upstream of capsid assembly and are associated with nuclear cccDNA and affect their stability and transcription; they are involved in export of the pregenomic R A from the nucleus,

[0643] For example, the compounds provided herein may affect virus assembly by interacting with core protein dimers as well as eapsids, and/or may affect core protein activity upstream of capsid assembly. Defective assembly can immediately suppress virus production. Suppressed Cp activity upstream of assembly can also interfere with activities of the virus required for stability of the infection itself. For example, provided compounds may successfully treat HBV with a finite course of therapy (as opposed to the potentially life-long therapy necessary with current antiviral nucleosides/nucleotides), e.g. such finite therapy would result from a loss of new viral proteins and mRNA resulting from epigenetic modification of the viral cccDNA, as well as a reduction in new infectious virions. In other words, disclosed compounds may activate viral capsid assembly independent of the normal nucleating signals leading to defect e assembly, capsid assembly begins with an AE^»Cp complex instead of waiting for the biological RT*pgRNA nucleating complex; the resulting capsid or aberrant complex, e.g., cannot support production of a new virion. In some embodiments, disclosed compounds may leverage consumption of a few molecules needed for nucleation to consume up to 120 Cp dimers. Without being bound by theory, disclosed compounds may, for example, alter the concentration of Cp (core protein), likely required for activities upstream of capsid assembly. Suppressing Cp activity upstream of assembly interferes with the Cp interactions with the viral reservoir (cccDNA). This may lead to clearance of the infection by reduction of viral proteins and cccDNA activity'',

[0044] The disclosure provides, in an embodiment, compounds of Formula 1 below, and a pharmaceutical composition comprising; (i) a compound of Formula 1 ha ving the structure:

Formula 1

a pharmaceutically acceptable salt, stereoisomer or prodrug thereof, wherein

q is 0, 1, 2. 3 or 4;

p is 0, L 2, 3, or 4;

r is 0, 1, 2, 3, or 4;

R^l is independently for each occurrence selected from the group consisting of -H, -CV

Cealkyl, -CrQalkoxy, _rC6aikyl-0~CrC₆ lkyf halogen, cyano, -OH, -C(0)H, ~C0₂R^f, - C(0)N(R')(R"), -QOXVQalkyl, -N(R')(R")_; -N0₂, -N(R^f)C(0}Ci-C₆aIkyl_; -S(0)_w~Ci~ C₆alkyl₅ -N(R'}S(0}_w-CrC6alkyL and -S(0)_w-N(R')(R");

w is 0, 1 or 2;

R' is independently for each occurrence selected from the group consisting of -H and -C Cijalkyl;

.R" is independently for eac occurrence selected from the group consisting of -H and - C{-C_f.;alkyl; or R' and R" are taken together with the nitrogen atom to which they are attached to form a 4-7 membered heterocyclic ring;

R² is independently for each occurrence selected from the group consisting of -H, -C €₆alkyJ, -Ci-Qalkoxy, -Ci-Csalkyi-O-d-Csalkyl, halogen, cyano, -OH, -C(Q)H. -C(¾ ', - CiO)N(R¾R'% -QOJCf -Qalkyi, -N(R'KR"), -N0₂, - (R')C(0}C C₆alkyi, -S(0)*-C_r Qalkyl, - (R')S(0)_w-C_rC^alky ₅ and -S(OVN(R')(R"); and

' is selected from the group consisting of -H and -CVC^alkyl;

wherein Cj -Chalky! or Ct-Cgalkoxy may he independently for eac occurrence optionally substituted with one, two_; or three halogens; and

(ii) a pharmaceutically acceptable excipient.

j0ft45) in certain embodiments, p is 1 or 2.

(8046] in certain embodiments, the compound of Formula 1 is represented b Formula 1-

A

Formula I -A; or a pharmaceutically acceptable salt or stereoisomer thereof, wherein:

R^! is independently for each occurrence selected from the group consisting of -H, ~C|-

Ccalkyl, -Ci-C₆alkoxy, -Ci-C«alkyl-0-Ci-C_f;alkyl, halogen, cyano, -OH, -C(0)H, -CO2R', -

C(0)N(R')(R"), -C(0)Cj-C6alkyl, - (R')(R")_S -NO¾ -N(R')C(0)Ci-C₆a1kyi, -S(OVCr

C₆alkyL - (R^?)S(0)_w-C C6 ikyi₅ and -S(0)_w-N(R')(R");

R~ is independently for each occurrence selected from the group consisting of -H and halogen;

R" is independently for each occurrence selected from the group consisting of -H, -Ci- Qalkyl, -Cj-Csalkoxy, -Ci-Qalkyl-O-CVQalkyl, halogen, cyano, -OH, -€(0) 1, -C0₂R', - C(0)N{R')(R"), -C(0)CrC6alkyl, - R')(R")₅ -N0_2? -N(R')C(0)Ci-Gialky!, -S(0)_w-Cr Cealky!, -N(R S(OVCj-C«alkyi, and -S(OVN(R')(R");

R^""' is independently for each occurrence selected from the group consisting of -H, ~Ci- Csalk l, -C]-Qa1.koxy, -Cj-Qalkyl-O-Ci-Oiaikyl, halogen, cyano, -OH. -C(0)H, -CO2R', - C(0)N(R')(R"X -C(0)C_rC_(iaIkyl - fR'XR"), -N0₂, ~NiR C(0}Cj~QaIkyi, ~S{0)_w-C_r Cealkyl, -N(R S(OVCi -Chalky!, and -S(PVN(R')(R"); and

R^** is independently for each occurrence selected from the group consisting of-H and halogen;

R^" is independently for each occurrence selected from the group consisting of -H, -CV Qaikyk -Ci-C'calkoxy, -Ci-C«alkyl-0-C_{-O#!kyl, halogen, cyano, -OH, -C(0)H₅ -CO2R', - C(0)N{R')(R"), -C{0)Ci-Olkyl, -N(R '){¾"), -NO¾ ~N(Rⁱ)C(0)CrC_i!ai-kyl₃ -S(0)wCi- C₆aIkyL

is 0, 1 or 2;

q is 0, .1 , 2, 3 or 4;

R' is independently for each occurrence selected from the group consisting of -H and -C¾- C^alky!;

R" is independently for each occurrence selected from the group consisting of -H and - Cj-Cealkyi; or R' and R" are taken together with the nitrogen atom to which they are attached to form a 4-7 membered heterocyclic ring;

R^':' is selected from the group consisting of-H and -Cj-Csalkyl;

wherein Cj-Qalkyl or Ci-Csalkox may be independently for each occurrence optionally substituted with one, two,, or three halogens; wherein CrQalkyl or CVQalkoxy may be independently for each occurrence optionally substituted with one, two, or three halogens.

{0047] In certain embodiments, R²ⁱ and/or R~⁴ is -HL

[0048] in certain embodiments, R^** is selected from th group consisting of H, -Ci-

C a!kyl, -OyCgalkaxy, -Ci-Qalkyl-O-Ci-Cealkyi, halogen, cyano, -OH, -C(Q)H, -CO^R', - C(0)N(R')(R"), -C(0}CrC_fiaikyl ^(R'JfR"), -NQ₂, -N(R')C(0)C,-C_fialkyl₅ -S(OvC C<iaIkyI, -N(R')S(Q)w~Cf~QalkyL and -S(0)_¾.~N(R'}(R").

[0049] In certain embodiments, R" is independently for each occurrence seleeted from the group consisting of ~H, -Cj-Cgalkyl,

and halogen.

{0050] in certain embodiments, R²"' is selected from the group consisting of H, -O-

G¾tlkyf -CyCsalkoxy, ~C i -C^alkyl-O-Ci -Qalkyl, halogen, cyano, -OH, ~C(Q)H, -COaR', - C(0)N(R')(R")₅ -C{0)Ci-C₆aikyl_t ~N{R )(R' ), -N0₂, ~N(R^?}C(0)Ci-C6alkyl.₅

~N(R')S(0)_w-CrC₆aIkyI, and -S(0)_w-N(R')(R").

[00511 in certain embodiments, R^A' is independently for each occurrence selected from the group consisting of -H, -Ci-Cealkyl. -C_.t-C<_>alkoxy, and halogen.

[0052] In certain embodiments, "^" is selected from the group consisting of ~H, -Q-

Cealkyl, -C_rC«aIkoxy, halogen, cyano, -COiR', -N(R C(O)Cj-C₆alkyi_s -C(0)N(R')(R"), -

[0053] in certain embodiments, R^f is seleeted independently for each occurrence from the group consisting of -H, -Cj-Qalkyl, -CrC^alkoxy, halogen, cyano, and -OH.

[0054] In certain embodiments, q is 1 or 2.

[0055] in certain embodiments, the compound of Formula. I is represented by Formula 1-

B:

Fonnula I -B

or a pharmaceutically acceptable salt or stereoisomer thereof wherein R* is selected from the group consisting o -H, -€¾, -CH2CH3, -CF*, -F, ~CI, -Br, cyano, -OCH¾ and -OCl¾

R² is selected from the group consisting of ~H, ~C¾, ~F, and -OCH3; and ²' is selected from the group consisting of -H, -€·¾, -C¾Ci¾, -CH₂CH₂CH₂CB*, -CF₃, -F, -Ci, -OI L ~GC¾, ~<X¾C)¾, -OC(CS¾)₃, ~OCB₂CH₂CTI₂CH₃, -N¾, ~NHCH_3} - NHC(0)CFJ₃, - HC(0)C i, -OCHF₂, and -OCF¾, with other R subsitituents as above.

[0056] in certain embodiments, R of Formula 1 , 1 -A or 1 -B is selected from the group consisting of-CH₃, -CH(CH_3.h, -CH₂CH₂CH_¾ -CF_3> and -C(CH₃)₃,

|0057] In certain embodiments, R^* of Formula I, 1-A or 1-B is selected from the group consisting of -H, ~CH_3j ~CH₂CH₃, -CF₃, -F, -CI, -Br, -CN, -OCi¾, and -OCF3.

[0058] In another aspect, the present disclosure provides a method of treating, ameliorating, preventing, or substantially delaying a hepatitis B viral infection in an individual, the method comprising administering to the individual a compound or a pharmaceutical composition disclosed herein.

(005 j In another aspect, the present disclosure relates to use of a compound of Formula

1 , Formula 1 -A, or Formula 1-B in the manufacture of a medicament for the treatment of a hepatitis B viral infection.

{0860] Disclosed compounds may be prepared by methods known in the art. A disclosed compound may be preparing using a method comprising providing 2,4-dichioro-6-substituted pyrimidine and a ~substituted aniline group together in an organic solvent (wherein R may be selected from R^l above), and then contacting a resultant compound with Z (e.g. pipera ine or 4- aniiiio aniline group).

{0061 ] Thereafter, an optionally substituted suifonyi. benzene group is added, in a further aspect, a method for treating HBV infection (e.g. an. acute or chronic HBV infection) in a patient in need thereof is provided. The method includes administering to a patient a pharmaceutical composition comprising a therapeutically effective amount of a disclosed compound.

[0662] For use in accordance with this aspect, the appropriate dosage is expected to vary depending on, for example, the particular compound employed, the mode of administration, and the nature and severit of the infection to be treated as well as the specific infection to be treated and is within the purview of the treating physician. Usually, an indicated administration dose may be in the range between about 0.1 to about 15 mg/kg body weight. In some cases, the administration dose of the compound may be less than 10 mg kg body weight. In other cases, the administration dose may be less than 5 mg kg body weight. In yet other cases, the administration dose may be in the range between about 0.1 to about I rag kg body weight. The dose may be conveniently administered once daily, or in divided doses up to, for example, four times a day or i sustained release town.

[0063] A compound or composition may be administered by any conventional route, in particular: enieraSly, topically, orally, nasally, e.g. in the form of tablets or capsules, via suppositories, or parenteral ly, e.g. in the form of injectable solutions or suspensions, for intravenous, mtra-rmiscu!ar, sub-cutaneous, or intraperitoneal injection. Suitable formulations and pharmaceutical compositions will include those formulated in a conventional manner using one or more physiologically acceptable carriers or excipients, and any of those known and commercially available and currently employed in the clinical setting. Thus, the compounds may be formulated for oral, buccal, topical, parenteral, rectal or transdermal administration or in a form suitable for administration by inhalation or insufflation (either orally or nasally).

J0064] For oral administration, pharmaceutical compositions may take the form of. for example, tablets or capsules prepared by conventional means with pharmaceutically acceptable excipients such as binding agents (e.g. prege latinized maize starch, polyvinylpyrrolidone or hydroxy-propyl methylcellulose); fillers (e.g. lactose, macrocrystalline cellulose or calcium hydrogen phosphate); lubricants (e.g. magnesium stearate, talc or silica); disintegrants (e.g. potato starch or sodium, starch glycoHate); or wetting agents (e.g.. sodium lauryl sulfate). Tablets may be coated by methods well known in the art. Liquid preparations for oral administration may take the form of, for example, solutions, syrups or suspensions, or they may be presented as a dry product for constitution with water or other suitable vehicle before use. Such liquid preparations may be prepared by conventional means with pharmaceutically acceptable additives such as suspending agents (e.g. sorbitol syrup, cellulose derivatives or hydrogenated edible fats); emulsifying agents (e.g. lecithin or acacia); non-aqueous vehicles (e.g. almond oil. oily esters, ethyl alcohol or fractionated vegetable oils); and preservatives (e.g. methyl or propyl-p- hydroxybenzoates or sorbic acid). Preparations may also contain buffer salts, flavoring, coloring and sweetening agents as appropriate.

|006S| Preparations for oral administration may also be suitably formulated to give controlled-release or sustained release of the active compound(s) over an extended period. For buccal administration the compositions may take the form of tablets or lozenges formulated in a conventional manner known to the skilled artisan.

(8066] A compound may also be formulated for parenteral administration by injection e.g. by bolus injection or continuous infusion. Formulations for injection may be presented in unit dosage form e.g. in ampoules or in multi-dose containers, with an added preservative. The compositions may take such forms as suspensions, solutions or emulsions in oily or aqueous vehicles, and ma contain additives such as suspending, stabilizing and/or dispersing agents. Alternatively, the compound may be in powder form for constitution with a suitable vehicle, e.g. sterile pyrogen-free water, before use. Compounds ma also be formulated for rectal administratio as suppositories or retention enemas, e.g. containing conventional suppository bases such as cocoa butter or other glycerides.

(0067] In some cases, disclosed compounds may be administered as part of a combination therapy in conjunction with one or more antivirals. Exemplary antivirals include nucleoside analogs, interferon a, and other assembly effectors, for instance heteroaryl.dihydropyrimidi.nes (HAPs) such as methyl 4-(2-chloro-4-{luorophenyl)-6-methyl-2- (pyridm-2-yl)- 1 ^-dihydropj'rimidine-S-carboxylate. This may involve administering to a subject a first amount of a disclosed compound In combination with a second amount of an antiviral, wherein the first and second amounts together comprise a pharmaceutically effective amount. The first amount, the second amount, or both may be the same, more, or less than effective amounts of each compound administered as monotherapies. Therapeutically effective amounts of disclosed compound and antiviral may be co-administered to the subject, i.e., administered to the subject simultaneously or separately, in any given order and by the same or different routes of administration, in some instances, it may be advantageous to initiate administration of a disclosed compound or composition first, for example one or more days or weeks prior to initiation of administration of the antiviral. Moreover, additional drugs may be given in conjunction with the above combination therapy.

EXAMPLES

Example 1 ···· Synthesis of Common Intermediates 6 and 33

(0068] Synthesis of 6-metbyl-2-(pipera^-l -yl)-A^(p-toiyl)pyrimidin^-amine (6) - a

Common In termediate :

mm Synthesis of 2~cldoi¾-6-rtiet¾yi- ~(/ tolyi)p^'yi^'hmdin-4-amine (3):

|uO70| To a stirred solution of 2,4-dichlotO-6~!iiethylpyriiiisdine 1 (600 mg, 3.68 mmol) m C¾C (5 ml,} under argon atmosphere were added / oluidine 2 (473 mg, 4. 1 mmol) and t iethylamine (0.77 mL, 5.52 mmol) at RT; the mixture was warmed to 80 °C and stirred for 24 h. The reaction was monitored by TLC; after completion of the reaction, the voiatiles were removed in vacuo to obtain the crude product. The crude product, was purified through silica gel column chromatography using 10% ethyl acetate (EtOAc)/hexanes to afford compound 3 (300 mg, 35%) as an off-white solid. TLC: 20% EtOAc/ hexanes (Rf. 0.4); 1H- MR (BMSO-<¾, 400 MHz): S 9.76 (s, 1H), 7.42 (d, J ^'= 8.0 Hz, 2H), 7.16 id, J- 8.4 Hz, 2H), 6.52 (s₅ IH), 2.27 (s, 3H), 2.25 (s, 30).

|007i| Synthesis of tert-butyl 4-(4-methyi-6-(p-toiyiamino) pyrimidin-2-yl) piperazine-

1-carboxyiate (5):

(0072] To a stirred solution of compound.3 (200 rag, 0.85 rnol) in «-batanoJ (3 mL) under argon atmosphere were added er/~but i piperadne-l -carbox yiate 4 (238 nig, 1.28 mmoi) and AvV-diisopropylethylamine (DIPEA; 0,30 mL, 1.70 tnrnol) at RT; the mixture was heated to 100 °C and stirred for 16 h. The reaction was monitored by TLC; after completion of the reaction, the volatiles were removed in vacuo to obtain the crude product. The crude product was purified through silica, gel column chromatography using 20% EtOAc/ hexanes to afford compound 5 (220 rag, 67%) as an off-white solid. TLC: 20% EtOAc/ hexanes (R/. 0.5); Hi- NMR (BMSO- , 4Θ0 MHz): ό 9.00 (s, IH), 7.45 (d, J- 8.4 Hz, 2H), 7.10 (d, J- 8.0 Hz, 2H), 5.89 (s, 1H), 3.66 (t, J- 5.6 Hz, 4H), 3.31 (t, 5.6 Hz, 4H), 2.2 (s, 31:1), 2.12 (s, 3H), ^"1.42 (s, 9H),

(0073] Synthesis of 6-meth yi~2~(piperazm- 1 -yl)-_:¥-(/.?~toiyI)pyr imidi n-4-amiiie (6):

s

(0074] To a. stirred solution of compound 5 (220 rag, 0.57 mmo!) in CH >CI (3 mL) under inert atmosphere was added trifhioroacetic acid (0.25 ml., 2.86 mmo ) at 0 "C; the mixture was warmed to 15 °C and stirred for 30 mm. The reaction was monitored by TLC; after completion of the reaction, the volatiles were removed in vacuo. The residue was neutralized with saturated NaHCCh solution (30 mL) and extracted with EtOAc (2 x 30 mL). The combined organic extracts were dried over sodium sulfate, filtered and concentrated in vacuo to afford compound. 6 (130 rng, 80%) as an off-white solid. TLC: 5% MeOH/ C¾Cb (fy 0.2); ^rH- MR (DMSO-4, 400 MHz): δ 8.98 (s, 1H), 7.45 (d, J - 8.4 Hz, 2H), 7.09 (d, J - 8,4 Hz, 2H), 5.87 (s, 1H), 3.67 (t, J^:::: 5.2 Hz, 4H), 2.81 (t, J - 4.8 Hz, 411), 2.24 (s, 3H), 2.12 fs, 3H).

(0075] Synthesis of N-(4-fluorophenyl)-6-isopro yl-2-(piperazin- 1 -yl)pyrimidm-4-amme

(13) - a Common Intermediate: Ci MgCi C! ff - F— <·'' V-NH HN NBoc

Cul THF f^~ E¾N, EfOH j * DSPEA, n-8uGH

7 8 11

'i 1.^-iJioxarse

>>SH

CH,C!

13

[0076] Synthesis of 2 _}4-diciiiora~6-isopropyipynmidme (9):

[01⁾77] To a stirred solution of 2,4,6-trichioropyrimidine 7 ( 10 g_s 54.49 mniol) in anhydrous teirahydrofiiraii (THF; 200 mL) were added isopropyl magnesium chloride 8 (2 M sol. in THF, 54.5 mL, 109.0 mraoi) and copper iodide (520 rag, 2.72 mmo^'l) at -20 °C under argon atmosphere; the mixture was stirred at 0 ^aC for 2 It . The reaction was monitored by TLC; after completion of the reaction, the reaction .mixture was quenched with aqueous saturated

ammonium chloride solution (150 mL) and extracted with EtOAc (2 x 150 mL). The combined organic extracts were dried over sodium sulfate, filtered and concentrated in vacuo to obtain the crude product. The crude product was puri fied through silica gel column chromatography using 2% EtOAc/ hexanes to afford compound 9 (6 g, 58%) as a colorless liquid. TLC: 7% EtOAc/ hexanes (R 0.8); *Η~!ΝΜΗ (CDCI* 400 MHx): δ 7.16 (s, I H ), 3.04-2.97 (m, IB), 1.31 ( l₅ J === 6.8 Hz, oi l ).

[0078] Synthesis of 2 hioro~N- -fluoTOphe«yl)~6>isoptopylpyrimidin-4->amine (11):

(0079] To a stirred solution of compound 9 (4.5 g, 23.56 mmaX) in ethanol (50 ml) were added 4~fhioroaniHne 10 (2.61 g, 23.56 mmol) and triethyiamine (5.1 mL, 35.34 mmol) al RT under argon atmosphere; heated to 70 °C and stirred for 24 It. The reaction was monitored by TLC; after completion of the reaction, the voJatiles were removed in vacuo to obtain the crude product. The crude product was purified through silica gel column chromatography using 4% EtOAc/hexanes to afford compound Π (3.5 g, 56%) as an off-white solid. TLC: 10% EtOAc/ hexanes (Rf 0.2); *H-IN R (CDO* 400 MHz): S 7.30-7.28 (m, 2H), 7.1 1 (t, J- 8.0 Hz, 2H), 6.96 (br s₅ JH), 6.30 (s, 1H), 2.84-2.77 (m, 1H), 1 .21 fd, J- 6.8 Hz, 6H).

£0080] Synthesis of /e?'/-buiyl 4-(4^(4-fluorophenyl)ami«o)-6-isopropylpyrimidm-2-yI) piperazine- 1 -carboxylate (12):

12 0081. j To a stirred solution of compound 11 (3.5 g, 13.21 mmol) in w-butano! (60 ml) were added ferf-hntyl piperazine- 1 -carboxylate 4 (3.66 g, 19.8 mmol) and A V- diisopropylethylamine (3.65 mL, 19.81 jxtmol) in sealed tube at RT under argon atmosphere; the mixture was heated to 120 °C and stirred for 36 h. The reaction, was monitored by TLC; after completion of the reaction, the volatiles were removed « vacuo to obtain the crude product. The crude product was purified through silica el column chromatography using 10% EtOAc/ hexanes to afford compound 12 (4 g, 73%) as a white solid. TLC: 10% EtOAc/ hexanes (Rf, 0.8); ¹H-NMR (C CI3, 00 MHz): 5 7.30-7.28 (m, 2H), 7,03 (t J 8.4 Hz, 2B), 6.32 (br s, 1 H), 5.79 (s, H), 3.77 (t, J - 5.2 Hz, 4H), 3.49-3.46 (m, 4H), 2.72-2.61 (tn, 1 H), ! .48 (s, 9H), 1 .18 id, /- .8 Hz, 6H).

f 0082 j Synthesis of A^4-f uoraphenyl)-6^isopropyl-2-(pi-petazm- 1 -yi)pyrimidin-4-ami«e

(13):

13 (0083] To a stirred solution of compound. 12 ( 500 rag, 1.2 mmol) in CH₂O₂ ( 1 mL) was added 4 N HC! in l ,4~dioxane (4 mL) at 0 °C under argon atmosphere; the mixture was warmed to R.T and stirred for 2 h. The reaction was monitored by TLC ; after compieii osi of the reaction , the volatiles were removed in vacuo. The residue was neutralized with 10% NaHCO_? solution (20 mL) and extracted with EtOAc {2 x 30 mL), The combined organic extracts were dried over sodium sulfate, filtered and concentrated in vacua to afford compound 13 (340 mg, 90%) as an off-white solid. TLC: 10% CH₃OH/ CH₂CI₂ (Rf. 0.2); Ή-N R (DMSO~<* 400 MHz): ό 9.09 (s, 1H), 7.62-7.58 (m, 2H), 7.1 1 (t, J- 8.8 Hz, 2H)₅ 5.86 (s, IH), 3.60 (t, J = 4.8 Hz, 4H), 2.71 (t, J- 4.8 Hz, 4H), 2.67-2.58 ( , 1 H), i .18 (d, J = 6.8 Hz, 6H).

Example 2 -· Synthesis of Target Compounds 1-22

{0084} intermediates 6 and 13 were converted to final products either by using commercially available sulfonyl chlorides or by using prepared sulfonyl chlorides employing typical procedure A and the results are captured in Table 1 below.

|008S| Typical procedure A: To a stirred solution of compound 6 (40 mg, 0.14 mmol) in CH₂CI.₂ (5 mL) under argon atmosphere were added pyridine (0.06 mL, 0.70 mmol), and sulfonyl chloride (29.5 mg, 0.15 mmol) at 0 °C; warmed to RT and stirred for 4 h. The reaction was monitored by TLC; after completion the reaction, the reaction mixture was diluted with CH₂CI₂ (30 mL), washed with water (15 mL), 1 N HCl (10 mL), 10% aHCCn solution (15 mL), brine (15 mL), dried over sodium sulfate, filtered and concentrated in vacuo to obtain the crude product. The precipitated material was either directly dried in vacuo or triturated or purified by column chromatography to afford the desired target compounds.

Table I

77

2M), 7. 1 1 a. J

8, Hz, ?.) . 5,87 (s, 1 H), 3.78 (t, 4.8 Ex, 4H), 2.90

2.62-2,53 (ra. !H), 2.38 (s, 3H)_t 1 .1 1

Example 3 - Synthesis of Target Compounds 23 & 24

0086] Synthesis of 6-methyl-2-(4-((4-nitrophenyl) siilfonyl piperazi n- 1 -yl)-AT-(p-toiyl) pyrimidin-4-arahie (64): To a stirred solution of compound 6 (100 mg, 0.35 mmol) in C¾(¾ (5 mL) under argon atmosphere were added pyridine (0.15 mL, 1.76 mmol) and 4- «itrobenzenesu!fo»yi chloride 63 (78 mg, 0.35 mmol) at 0 °C; warmed to RT and stirred for 4 h. The reactioa was monitored by TLC; after completion of the reaction, the reaction mixture was diluted with C¾Ck (30 mL), washed with i N HC1 (15 mL), 10% NaHC0₃ solution (20 mL), water (20 mL,), dried over sodium sulfate, filtered and concentrated in vacuo to obtain the crude product. The crude product was washed with diethyl ether (2 x 5 mL) and «-pentane (2 x 5 mL) and dried in vacuo to afford compound 64 (110 mg, 67%) as a white solid, TLC: 5% MeOH/ CH2CI2 (Rf. 0,8); ^JH-NMR (DMSO-oT* 00 MHz): δ 9.00 (s, I E), 8.41 (d, J ~ 8.8 Hz, 2B), 8.01 (d, J - 8.8 Hz, 2H), 7.38 (d, J - 8.4 Hz, 2H), 7.08 (d, J - 8,4 Hz, 2H), 5.86 (s, 1 H), 3.79 (t, J - 5.2 Hz, 4H), 3.02 (t, J - 4.8 Hz, 4H), 2.24 (s, 3H), 2.08 (s, 3H).

[ 087J S yn thesis of 6-methyl-2 -(4-((4 -nitrophenyl) s alfonyl piperazin- 1 -yl)-A-( >-io!yl) py.rimklin-4~amine (65): To a stirred solution of compound 64 ( 100 mg, 0.2 mmol) in MeOH (5 mL) under argon atmosphere was added 10% Pd/C (30 mg) at RT; tbe mixture was stirred under hydrogen atmosphere (balloon pressure) for 4 h. The reaction was monitored by TLC; after completion of the reaction, the reaction mixture was filtered through celite, washed with. CHJC , (2 x 20 mL) and the filtrate was concentrated in vacuo to obtain the crude compound 65 (73 mg, 78%) as an off-white solid. TLC: 5% MeOH/ CH₂C¾ (fy 0.5); 'H-NM (DMSO-tf*, 400 MHz): δ 8.99 (s, 1H), 7.40 (t, J- 8,4 Hz, 2H), 7.35 (d_? «/= 8.8 Hz, 2H), 7.08 (d, J = 8.0 Hz, 2H), 6.62 (d, J ^:::: 8.4 Hz, 2H), 6.05 (br s_t 211), 5.86 (s, 1H), 3.75 (t, J- 5.2 Hz, 4H), 2.82 (t, J ^:::: 5.2 Hz. 4H), 2.24 (s, 3H), 2.09 (s, 3H).

[0088] Synthesis of 2-(4-((4-(dimeihyiamitio) phen l.) sulfonyl )piperazm- 1 ~yl)~6~m.ethyl-

A'-(/i-toSyi)pyrimidin-4~a:mine (target compound 23) & 6~.methyl-2-(4-i{4-(meiliyiamino) phenyl) sulfonyl) piperazin- 1 -yl)-A'-(/^tolyI)pyri.midin- -anime (target compound 24): To a stirred solution of compound 65 (140 mg, 0.31 .mmol) in A^;i,A'~diiuethylformam.ide ( DM F; 5 ml) under argon atmosphere were added potassium carbonate (1 10 mg, 0.79 mmol), methyl iodide (0.05 mL, 0.79 mmol) at 0 °C; warmed to 50 °C and stirred for 1 h. The eaction was monitored by TLC; after completion of the reaction, the reaction mixture was diluted with ice cold water (1 mL) and the precipitated solid was filtered, washed with ether (2 5 ml.) to obtain the crude product, which was purified by preparative HPLC to afford target compounds 23 (30 mg, 20%) Sc 24 (25 mg, 17%) as off-white solids.

[008 1 Analytical data of target compound 23; TLC: 5% MeOH/ C¾Ch (Rf. 0.6); ^l H- MR (DMSO-i¾, 400 MHz): δ 9.00 (s, i.H), 7,48 (d, J- 9.2 Hz, 2H), 7.39 id, J - 8,4 Hz, 2H), 7.08 (d, J = 8.0 Hz, 2H), 6.77 (d_? J - 8.8 Hz, 2H), 5.85 (s, 1 H), 3.76 (t, J- 5.2 Hz, 4H), 2,98 (s, 6H), 2.82 (t, J - 4.8 Hz, 4H), 2.24 (s, 3H), 2.08 ( s, 3H); LC-MS: 99.37%; 467.0 (M ÷l); (column; X-se!ect CSH C-18, (50 x 3.0 mm, 3.5 μηι); RT 3.06 mm. 0.05% TFA (Aq):AC ; 0.8 mlimin); UPLC (purity): 99.15%; (column: A.cquity BEH C-18 (50 x 2.1 mm, I .7 μ); RT 2.14 min. ACN:0.025% TFA (A ); 0.5 mL/min) (1P13090223).

100 01 Analytical data of target compound 24: TLC: 5% MeOH/ CH₂C1₂ (R 0.5); *H- R (DMSO→ 400 MHz): δ 8.99 (s, 1 H), 7.40 (d, J~ 8.8 Hz, 4H), 7.08 (d, J ~ 8.0 Hz. 2H), 6.65-6.63 (m₅ IH), 6,61 (d, J - 8.8 Hz, 2H), 5.86 (s, 1H), 3.76 (t, 7- 4.8 Hz, 4H), 2.82 (t, J - 4.8 Hz, 4H), 2.70 (d, J - 5.2 Hz, 311), 2.24 (s, 3H), 2.08 (s, 3H); LC-MS: 93.74%; 453.0 (M^÷M); (column; X-se!ect CSH C- 8, (50 x 3.0 mm, 3.5 μηι); RT 2.92 min. 0.05% TFA (Aq) : ACN; 0.8 mL/min); UPLC (purity): 92.23%; (column: Acquity BEH C-18 (50 x 2.1 mm, 1.7 μ); RT 2,04 min. ACN: 0.025% TFA (Aq); 0.5 mL/min) (1P13090222).

Example 4 ----- Synthesis of Target Compounds 25 & 26:

Boc-N NH -S' -

^/ 5 ^' - 66

f 0091 j Synthesis of fert-butyi 4^(4-nitrophe«yl)sul.fonyl)piperazme-l-carboxykte (66):

To a stirred solution of tert -butyl piperazine-l -carboxylate 4 (500 mg, 2.68 nirnoS) in CH2CI2 (10 ml.) under argon atmosphere were added pyridine (1.1 inL, 13.4 mniol), 4-nitrobenzenesulfonyl chloride 63 (594 mg, 2.68 mmol) at 0 °C; warmed to RT and stirred for 4 h. The reaction was monitored by TLC; after completion of the reaction, the reaction mixture was diluted with

EtOAc (30 mL), washed with water (20 ml), 1 N HCI (15 mL), 10% NaHCOs solution (20 mL), brine (20 mL), dried over sodium sulfate, filtered and concentrated in vacuo to obtain the crude product. The crude product was washed with diethyl ether (2 x 10 mL) and n-peniane (2 x 10 mL) and dried in vacuo to afford compound 66 (760 mg, 76%) as a white solid. TLC: 30% EtOAc/ hexanes (¾^■: 0.5); Ή-NMR (CDCb, 500 MHz): S 8.39 (d, ,/= 9.0 Hz, 2H), 7.94 (d, J= 9.0 Hz, 2H), 3.53 (t, J- 5.0 Hz, 4H), 3.04 (t, J - 5.0 Hz, 4H), i .40 (s, 9H).

|0ϋ92 ] Synthesis of len-butyi 4-((4-amiflOphenyl) su!fonyl ) piperazine- 1 -carbox iate

(67): To a stirred solution of compound 66 (750 rag, 2,02 mmoi) in MeOH (10 mL) under argon atmosphere was added 10% Pd C (200 mg) at RT atid stirred under hydrogen atmosphere (balloon pressure) for 6 h . The reaction was monitored by TLC; after completion of the reaction, the reaction mixture was filtered through celite, washed with QLC¾ (2 x 30 mL), and the filtrate was concentrated in vacuo to obtain the crude product. The crude product was washed with C¾C½ (2 x 10 mL) to afford compound 67 (61 mg, 89%) as white solid, TLC: 30% EtOAc/ hexanes (K 0.3); Ή- ΜΕ (CDC¾ 400 MHz): δ 7.54 (d, - 8.4 Hz, 2H), 6.78 (d, J- 8.4 Hz, 21 I K 3.49 (t, ./ 5.6 Hz, 4H). 2.93 (t, J 5,2 Hz, 4H), 1.4! (s, 9H).

{0093] Synthesis of /er/-butyl 4-{^4-(2,2₅2- triflnoroacetamido)pheny!)sulfonyI)piperazine- 1 -carboxylate (68); To a stirred solution of compound 67 (100 mg. 0.29 mmoi) in Q bCL (3 mL) under argon atmosphere were added pyridine (0.04 mL, 0.58 mmoi) and tritluoroacetic anhydride (0.04 mL, 0.29 mmoi) at 0 ^C'C: and stirred for 30 min. The reaction was monitored by TLC; after completion the reaction, the reaction mixture was diluted with water (20 ml.) and extracted with C¾C¾ (2 x 20 mL). The combined organic extracts were dried over sodium sulfate, filtered and concentrated in vacuo to obtain the crude product. The crude product was purified through silica gel column

chromatography using 30% EtOAc/ hexanes to afford compound 68 (105 mg, 82%) as white solid. TLC: 40% EtOAc/ hexanes {R/. 0.8); 'li-NMR (DMSCM*. 400 .MHz): δ 1 1.64 (s, I H), 7.95 (d, J- 8.0 Hz, 2H), 7.78 (d, J- 9.2 Hz, 2H), 3.38 (t, J = 5.2 Hz, 4H), 2.85 (t, J- 5.2 Hz, 4H), I .33 (s_; 9B),

[0094] Synthesis of 2_>2_>2-trif!noro-iV-(4-(piperazin- 1 -ylsu.fonyl)phenyl)aeetamide hydrochloride (69); To a stirred solution of compound 68 (100 mg, 0,22 mmoi) in CH2CI2 (3 mL) was added 4 N HCl in 1,4-dioxane (2 mL) under argon atmosphere at 0 °C was stirred for 3 h. The reaction was monitored by TLC ; after completion of th reaction, the volatiles were removed in vacuo to obtain the crude product. The crude product was triturated with diethyl ether (2 x 5 mL) and dried in vacuo to afford compound 69 (45 mg, HC1 salt) as an off-white solid. TLC: 5% fvleOH/ CH₂C!₂ (R/. 0.2); H-NMR (DMSO-tf* 500 MHz): 5 1 1.78 (br s, IH), 9.05 (br s_t I B), 8.50 (d, J - 6.8 Hz, 211), 7.85 (d, ../=== 7.2 Hz, 2H), 3.17-3.16 (m, 4H), 3.13-3.12 (m. 40).

[0095] Synthesis of 2,2_>2-trifl«oiO-N-(4-((4-(4-rnethyl-6-(p-to1ylammo) pyrimidin-2-yl) pi erazin-i-yl) sulfonyl) phenyl) acetamide (25) & 2,2,2-trif¼oro-AH4-{{4-(4-i«ethyl-6-(/j- tolylararao) pyrimidia-2-yl) piperazin-l-yl) sulfonyl) phenyl) acetamide (26): To a stirred solution of compound 69 (70 mg, 0.29 mmol) in w-butanol (3 mL) under argon atmosphere were added compound 3 ( 100 mg. 0.29 mraol), diisopropylethylamme (0.13 mL, 0.74 mmo!) at RT; warmed to 100 °C and stirred for 12 b. The reaction was monitored by TLC; after completion of the reaction, the volatiles were removed in vacuo to obtain crude. The crude product was purified through silic gel column chromatography using 30% EtOAc hexanes to afford 25 (20 mg, 12%) & 26 (30 mg, 20%) as an off-white solid. Analytical data of 25: TLC: 40% EtOAc/ hexanes (R 0.6); Ή-NMR (DMSCW* 400 MHz): δ 1 1.60 (s, I H), 9.00 (s, IH), 7.93 (d, J - 9.2 Hz, 2H), 7.79 (d, J 8.8 Hz, 2H), 7.39 id. J 8.4 Hz, 211 ). 7.08 (d, ,/ 8.4 Hz, 2Π), 5.86 (s, IH), 3.77 (t, J- 5.2 Hz, 4H), 2.92 (t, J = 4.S Hz, 4H), 2.24 (s, 3H)_S 2.08 (s, 3H): LC-MS:

98.84%; 534.9 ( ⁺-H ); (column: X-select CSH C-18, (50 ^χ 3.0 ram, 3.5 μνα); RT 3.13 min. 0,05% TFA (Aq):ACN; 0.8 raL/min); UPLC (purity): 97.15%; (column: Acquity BEH C-18 (50 x 2.1 mm, 1.7 ti); RT 2.13 min. ACN:0.025% TFA (Aq); 0.5 mlJmm) (IP 1 090981 .

{0096} Analytical data of 26: TLC: 40% EtOAc/ hexanes (R/. 0.5); 'H- MR (DMSO- „ 400 M!l¾): δ 8.99 (s, 1 H), 7.40 (d₅ J - 8.4 Hz, 2\ \). 7.35 (d, J - 8.8 Hz, 2H), 7.08 (d, J - 8.0 Hz_: 2H), 6.62 (d, J = 8.8 Π/, 2H), 6.05 (br s, 2H), 5.86 (s, 1 Π). 3.75 (l J - 4.8 Ez, 41 !), 2.82 (t, J - 4.8 Hz, 4H), 2.24 (s, 3H), 2.09 (s, 3H); LC-MS: 98.05%; 438.9 (M'+l }; (column: X-select CSH C-18, (50 * 3.0 mm, 3.5 μηι>; RT 2.81 min. 0.05% TFA (Aq):ACN; 0.8 mUmm); 11 PLC (purity); 95.75%; (column: Acquity BEH C-18 (50 x 2.1 mm, 1.7 μ); RT 1.93 mm.

ACN:0.025% TFA (Aq); 0.5 mL/min} (IPl 3100012).

Example 5^■··· Synthesis of Target Compound 27

{0097] Synthesis of /m-batyl 4-(4-chloro-6-methylpyrim!dm-2-yl) piperazine- 1 - carboxyiate (70): To a stirred solution of 2,4-dichloro-6-me ylpyrirnidme 1 (2 g, 12,26 miiiol) in κ-hutanol (10.mL) under argon atmosphere were added ½r/- butyl piperazine- -carboxyiate 4

(2.74 g, 14.72 mmol), diisopropylethylamine (4.2 mL, 24.53 mmol) in a sealed tube at RT; warmed to 100 °C and stirred for 16 h. The reaction was monitored by TLC: after completion of the reaction, the reaction mixture was diluted with water (50 mL) and extracted with EtOAc (3 x 50 mL). The combined organic extracts dried over sodium sulfate, filtered and concentrated in vacuo to obtain crude. The crude product was purified through silica gel column

chromatography using .15% EtOAc/hexanes to afford compound 70 (500 nig, 13%) as an oft- white solid. TLC: 10% EtOAc/ hexanes (Rf. 0.6); ^}H-1 R (DMSO-*/*, 500 MHz): δ 6.66 (s, .1 ), 3.69 (t, J - 5.0 Hz, 4H), 3.38 (t, J - 5.0 Hz, 4H), 2.28 (s, 3B), 1.41 (s, 9H).

[0098J Synthesis of 4-chloro-6-i¾ethyl-2-(piperazin-l -yl) pyrimidine (71): To a stirred solution of compound 70 (500 mg, 1.59 mmol) in CH2CJ2 (3 mL) under inert atmosphere was added 4 HCI in 1 ,4-dioxane (5 mL) at 0 ^CC and stirred for 6 h. The reaction was monitored by TLC ; after completion of the reaction, the volatile* were removed in vacuo. The residue was neutralized with saturated NaHCOs solution (30 .mL) and extracted with EtOAc (2 x 30 mL). The combined organic extracts were dried over sodium sulfate, filtered and concentrated in vacuo to obtain compound 71 (270 mg, 79%) as white solid. TLC: 30% BtOAc/ hexanes (R 0.2); 1H-N R (DMS0~<¾, 400 MHz): S 6.5S (s 1 H), 3.62 (t, J 5.2 Hz, 4H), 2.70 (t, J - 5.2 Hz, 4H), 2,27 (s, 3H).

[0099] Synthesis of 4-((4-(4-cliloro-6-methy1pyrimidin-2-yl)piperazin- ί - yl)su!fo«yl)phenol (72): To a stirred solution of compound 71 (250 mg, 1 .17 mmoi) in O-bC (10 mL) under argon atmosphere were added pyridine (0.47 mL, 5.86 mmoi), 4- hydroxyben enesulfonyl chloride 47 (452 mg, 2,34 mmoi) at 0 °C; the mixture was warmed to RT and stirred for 16 h. The reaction was monitored by TLC: after completion of the reaction, the reaction mixture was diluted with water (30 mL) arid extracted with CHjCi? (2 x 70 mL). The combined organic extracts were dried over sodium sulfate, filtered and concentrated hi vacuo to obtain the crude product. The crude product was purified through silica gel column chromatography using 20% EtOAc/ hexanes to afford compound 72 (160 mg, 37%) as an off- white solid. TLC: 40% EtOAc/ hexanes (R/. 0.8); *H~NMR (I>MSG-//_fo 400 MHz): δ 10.53 (s, 1H), 7.55 (d, j - 6.8 Hz, 2H), 6.93 id, J - 6.8 Hz, 2H), 6.65 (s, 1 H), 3.79 (t, ,/==== 4.8 Hz, 4H), 2.88 (t, J- 4.8 Hz, 4H), 2,24 (s, 3H).

[00100} Synthesis of 2-(4~((4-( ?/7^"-butoxy) phenyl) sulfbnyl) piperazin- 1 -yi)-4-chloto-6~ memylpyrimidine (73): To a stirred solution of compound 72 (150 mg, 0.40 mmoi) in (¾€¾ (10 mL) under argon atmosphere were added magnesium perehlorate (36 mg, 0.16 mmoi), Boc- anhydride (0.35 mg, 1.62 mmoi) at 0 °C; the mixture was wanned to 45 *C and stirred for 48 h. The reaction was monitored by TLC; after completion of the reaction, the reaction mixture was diluted with water (20 mL) and extracted with C¾C¾ (2 x 30 mL); the combined organic extracts were dried over sodium sulfate, filtered and concentrated in vacuo to obtain the crude product. The crude product, was purified through silica gel column chromatography using 20% EtOAc/ hexanes to afford compound 73 (40 rag, 23%) as an off-white solid. TLC: 30% EtOAc/ hexanes (R/. 0.6); *H-NMR (DMSO d 400 MHz): 6 7.63 (d, J- 8.8 Hz, 2H), 7.17 (d, J = 8.8 Hz, 2H)_} 6.65 (s, IH), 3.80 (t, J = 5.2 Hz, 4H), 2.93 (£, 7-5.2 Hz, 4H), 2.24 (s, 3H), Ϊ.37 (s, 9H).

[001011 Synthesis of 2-(4-((4-(/e; -bntoxy) phenyl )sulfony1)piperazm- 1 -yl)-6-methyt-A- (p-to!yl) pyttmidm-4-araine (target compound 27): To a stirred solution of compound 73 (40 mg, 0.09 mmoi) in 1 ,4-dioxaii (4 mL) ^'under inert atmosphere were added /Mohndine 2 (13 mg, 0.12 mmoi), cesium carbonate (46 mg, 0.14 mmoi) at RT, purged under argon for 15 rain. To this were added Pd2(dba).?{4.5 rag, 0.004 mmoi), Xantphos (3.8 mg, 0.006 mmoi) in a sealed tube; heated to 120 °C and stirred for 16 h. The reaction was monitored by TLC; after completion of the reaction, the voiatiies were removed in vacuo to obtain the crude product. The crude product was purified through silica gel column chromatography using 25% EtOAc/ hexanes to afford 27 (15 mg, 32%) as an off-white solid. TLC: 30% EtOAc/ hexanes (# 0.5); 1H- MR (DMSO-^s, 400 MHz): δ 9.00 <s, 1 H), 7.64 (d, J = 8.8 Hz, 2H)₅ 7.40 (d, J = 8.4 Hz, 2BL7,T7 (d, J- 8.8 Hz, 2H), 7,08 (d, J = 8.4 Hz, 2H), 5.86 (s, 1H), 3.77 (t, ,/ = 5.2 Hz, 4H}₅ 2.90 (t, J= 5.2 Hz, 4H), 2.24 (s, 31-i), 2.09 (s, 3H), 1.36 (s, 9H); LC-MS: 96.84%; 496.4 (Μ%·1 ); (column; X-select CSH C- 18, (50 * 3.0 mm, 3.5 pro); RT 3.8 min. 0.05% TFA (Aq):AC ; 0.8 mi/mra) liPLC (purity): 96.72%; (column: Acqtnty UPLC BEH C-I S (2.1 x 50 mm, 1.7 μ}; RT 2.37 min. ACN:0. 25% TFA (Aq); 0.5 mL/min) (ΪΡ131 10106).

Example 6 - Synthesis of Target Compound 28

100102} Synthesis of4~((4-(4-methyl^^-tolylamiao)pyriraidi.n-2-yl)piperazi

sulf nyl) phenol (28): To a stirred sol ution of target compound 4 (50 rag, 0.1 .1 mrool) in CH₃CN (5 mL) were added potassium hydroxide (352 nig, 6.26 mmoi) in H>0 (5 mL), diethyl

(bromodifluoromethy! ) phosphoriate 83 (0.1 mL, 0.56 mraol ) at 0 °C; warmed to 10 °C and stirred for 2 h. The reaction was monitored by TLC: after completion the reaction, the reaction mixture was diluted with water (20 mL) and extracted with EtOAc (2 x SO mL). The combined organic extracts were washed with water (50 mL) dried over sodium sulfate, filtered and concentrated in vacua to obtain the crude product. The crude product was purified through silica gel column chromatography using 20% EtOAc/ hexanes to afford 28 (20 mg, 36%) as an off- white solid. TLC; 40% EtOAc/ hexanes (R/. 0.8); Ή-NMR (0MSO-<¾, 400 MHz): δ 9.00 (s, 1H), 7.81 (d, J^{■■■■■■} 8.8 Hz, 211), 7.56-7.20 (m, 5H), 7.08 (d, 8.4 H , 2H), 5.86 (s, 1H), 3.78 (t, j= 4.8 Hz, 4H), 2.93 (t, J= 4.8 Hz, 4H), 2.24 (s, 3H), 2.08 (s, 3H); LC-MS: 97.1 1%; 490.4 (! f ÷1): (column: X-select CSH C-18, (50 x 3.0 mm, 3.5 μηι); RT 3.6? min. 0.05% TFA

(Aq):ACN; 0.8 mL min); UPLC (purity): 98.09%; (column: Acquity BEH C-I8 (50 x 2,1 mm, 1.7 μ); RT 2.18 min. ACN:0.025% TFA (Aq); 0.5 niL min) (IP13090051). Example 7 ----- Synthesis of Target Compound 29

{00103| Synthesis of 2,4-dichioro-6-ethylpyriniidine (84): To a stirred solution of 2,4- dichloro-6-methylpyriraidine I (600 mg, 3.68 mmoi) in THF (10 mL) under argon atmosphere was added .lithium diisopropylamide (LDA; 2 M sol. in THF, 2.2 mL, 4.40 mmoi) at -78 °C and stirred for 30 min. To this was added methyl iodide (0.27 mL, 4.40 mmoi) at. -78 °C and the reaction stirred for 3 h. The reaction was monitored by TLC; after completion of the reaction, the reaction mixture was quenched with saturated ammonium chloride solution (20 mL) and extracted with EtOAc (2 x 30 mL). The combined organic extracts were dried over sodium sulfate, filtered and concentrated in vacuo to obtain the crude product. The crude product was purified through silica gel column chromatography using 5% EtOAc/ hexanes to afford compound 84 (120 mg, 1 %) as a low melting pale yellow solid. TLC: 10% EtOAc/ hexanes (Rf 0.8); ^lH- R (CDCb, 400 MHz): 6 7. 17 (s_s 1 H), 2.80 (q, 2H)₅ 1.32 (t, J = 7,6 Hz, 3H>. {00104) Synthesis of 2-chloro-6-ethyl-A^/-(/j-tolyi)pyrimidin-4-amine (85): To a stirred solution of compound 84 (100 mg, 0,5 mmoi) in 1,4-dioxane (5 mL) under argon atmosphere was added /j-iolui dine 2 (47.4 mg, 0,43 mmoi) at RT and the mixture degassed under argon for 10 min. To this were added Pd₂(dba)s (20.6 mg, 0,02 mmoi), Xantphos ( 1 ,5 mg, 0.03 mmoi) and cesium carbonate (202 mg, 0.62 mmoi) at RT: the reaction was heated to 1 10 °C and stirred for 2 h. The reaction was monitored by TLC; after completion of the reaction, the reaction mixture was diluted with water (20 mL) and extracted with EtOAc (2 x 30 mL), The combined organic extracts were dried over sodium sulfate, filtered and concentrated in vacuo to obtain the crude product. The etude product was purified through silica gel column chromatography usin .10% EtQAc/ hexanes to afford compound 85 (30 mg, 21%) as a sticky solid. TLC: 15% EtOAc/ hexanes (Rf 0.3); Ή- ΜΕ (CDCI* 400 MHz): δ 7.2.1 (d, J~ 8.4 Hz, 2H 7.15 (d, J~ 8.4 Hz, 2H), 6.82 (br s, I H), 6.38 (s, 1 H), 2.58 (q, 2B), 2.37 (s, 3H), 1.21 (t, J ~ 7.6 Hz, 3H).

Synthesis of /er/-huty I 4-(4^hyi-6^-t»!ylamino)p>Timidm-2-yl)pipe zme- 1 -carboxy!aie (86): To a stirred solution of compound 85 (30 mg, 0.12 mmol) in »-butanol (2 mL) under argon atmosphere were added tert-batyl pif erazi«e-l -carboxylate 4 (33.7 mg, 0.18 mmol) and ΝΛ^Τ~ diisopropylethylararae (0.04 mL, 0.24 rarao!) in sealed tube at RT; the mixture was heated to 80 °C and stirred for 5 h. The reaction was monitored by TLC; after completio of the reaction, the voiatiies were removed in vacuo to obtain the crude product. The crude product was purified through silica gel column chromatography using 15% EtOAc/ hexanes to afford compound 86 (65 mg, 68%) as a low me!ting colorless solid. TLC: 20% EtOAc/ hexanes (Rf 0.6); ^lH« M (DMSO-rf* 400 MHz): δ 9.02 (s, IH), 7.46 (d, J - 8.4 Hz, 2H), 7.10 (d, J - 8.4 Hz, 2H), 5.90 (s, IH), 3.67 (t, J- 4.8 Hz, 4H), 3.37 (t, J - 5.2 Hz, 4H), 2.40 (q, 2H ), 2.27 (s, 3H), 1.46 (s, 9H), 1.14 (1, ,/ = 7.6 Hz, 3H).

{^"60105] Synthesis of 6-ethy!-2-(piperazin- ! -yl)-A^ p-tolyi)pyrimidm-4-amme (87): To a stirred solution of compound 86 (65 mg, 0.16 mmol ) in Cl:bi¾ (2 mL) under argon atmosphere was added 4 N HC1 in 1,4-dioxane (0.25 mL, 0.82 mmol) at 0 °C; warmed to RT and stirred for 2 h. The reaction was monitored by TLC; after completion of the reaction, the reaction mixture was diluted with water (1 mL) and extracted with CH2CI_.2 (2 x 20 mL). The aqueous layer was basified with 5% aqueous Nai lCCh solution. (1.0 mL) and extracted with CH2CI2 (2 x 30 mL). The combined organic extracts were dried over sodium sulfate, filtered and concentrated /« vacuo to obtain crude compound 87 (35 mg, 72%) as an off-white solid. TLC; 1 % CH3OH CH2C 2 (Rf. 03); Ή-NM (DMSCW_fc 500 MHz): δ 8.98 (s, I B), 7.47 (d, J- 8. Hz, 2E), 7.09 (d, J - 8.5 Hz, 2H), 5.8 (s, IH), 3.63-3.62 (ni, 4H), 2.74-2.73 (m, 4H), 2.41 -2.37 (m, 3H), 2.24 (s, 3H), 1.13 (t, J- 8.0 Hz, 3H).

£00100] Synthesis of 6-eti yl-2-(4-((4-methoxyphenyl)sulfonyi)piperazin- i -yl)-A'-(/?-toIyl) py.rimidin-4-aniine (29): To a stirred solution of compound 87 (35 mg, 0.1 1 mmol) in CHjC-h (2 mL) under argon atmosphere were added pyridine (0.047 mL, 0.58 mmol) and 4- methoxybenzenesulfonyl. chloride 40 (26.7 mg, 0.12 mmol) at 0 °C; the mixture was wanned to RT and stirred fo 16 li. The reaction was monitored by TLC; after completion of the reaction. the reaction mixture was diluted with€3¾ί¾ (20 mL) and washed with 2 N HC! (2 x 10 mL). The organic layer was dried over sodium sulfate, filtered and concentrated in vacuo to obtain the crude product, which was precipitated with 20% EtOAc/ hexanes to afford 29 (25 mg, 45%) as an oil- white solid. TLC: 5% CH₃OH/ CH₂C1₂ {Rf. 0.7); 1H- MR (D St * 400 MHz): 5 9.02 (s, LH), 7.67 (d, J ~ 8.8 Hz, 2H), 7.40 (d, J- 8.4 Hz, 2H), 7.13 (d, J - 8.8 Hz, 2H), 7,08 (d_s ,/= 8.4 Hz, 2H), 5.87 (s, IH), 3.82 (s, 3H), 3.78 (t, J = 4.8 Hz, 4H), 2.88 (t, J= 4.8 Hz, 4H), 2.36 (q, 2H), 2.24 (s, 3H), 1.09 it, J 7.6 Hz, 3H); LC-MS: 95.60%; 468.6 (M^f'H): (column.: X- select CSH C-18 (50 ^χ 3.0 mm, 3.5 μηι); RT 3.70 mm. 0.05% TFA (Aq):ACN; 0,8 mL/min); UPLC (purity): 98.98%; (column: Acquity BEH C-18 (50 x 2.1 mm, 1.7 μ); RT 2.13 mm. ACN;0.025% TFA (Aq); 0.5 mL/min) (IP 13070762).

Example 8 - Synthesis of Target Compound 30

f 00107! Synthesis of 2,4-dich!oro-6-isopropylp>Timidine (9): To a stirred solution of 2,4- dichioro-6-eth.ylpyrimidi»e 84 (950 mg, 5.36 mmol) in THF (50 mL) under argon atmosphere was added LDA (2 M sol. in THF, 5.37 mL, 10.73 mmol) at -70 °C and stirred for 30 min. To this was added methyl iodide (0.66 mL, 10,73 mmol) at -70 °C and stirred for 2 h. The reaction was monitored by TLC; after completion of the .reaction, the reaction mixture was quenched with aqueous saturated ammonium chloride sol ution (20 mL) and extracted with EtOAc (2 x 50 mL). The combined organic extracts were dried over sodium sulfate, filtered and concentrated in vacuo to obtain the crude product. The crude product was purified through silica gel column chromatography using 2% EtOAc/ hexanes to afford compound 9 (500 mg, 50%) as a white solid. TLC: 10% EtOAc/ hexanes (Rf. 0.5); ^JH-N R (0>C¾, 400 MHz): δ 7.16 <s, 1 H), 3.04- 2.97 (ra, I E), 1.31 (d, J - 6.8 Hz, 6B).

1001081 Note: Compound 9 may aiso be prepared from trichloropyrinridine and isopropyl magnesium chloride as described above.

|0O109| Synthesis of 2-chloro-6 sopropyl-.A-(/ olyl)pyTimidin- -am.ine (88): To a stirred solution of compound 9 (500 mg, 2.61 raraol) in acetonitrile (S mL) under argon atmosphere were added /Holuidtne 2 (285 mg, 2,61 mmol) and roethy!amine (0.73 mL, 5.23 mmol) in sealed tube at T; the mixture was heated to 60 °C and stirred tor 24 h. The reaction was monitored by TLC; after completion of the reaction, the volatile* were removed in vacuo, the residue was diluted with water (30 mL), and then extracted with EtOAc (2 x 40 mL). Fhe combined organic extracts were dried over sodium sulfate, filtered and concentrated in vacuo to obtain the crude product. The crude product was purified through silica gel column chromatography using 7% EtOAc/ hexanes to afford compound 88 (130 mg, 1 %) as white solid. TLC: 20% EtOAc/ hexanes (Rf 0.3); ^I- MR (DMSO-4* 500 MHz): δ 9.80 (s, 1 H\ 7.42 (d, 7.5 Hz, 2H). 7.1.6 (d₅ J - 8.0 Hz, 2H), 6.53 (s, 1H), 2.78-2.76 (m, 1H), 2.27 (s, 3H), 1.16 (d,J = 7.0 Hz, 6H).

[0011 Of Synthesis of /er/-butyl 4-(4-isopropy1-6- / olylammo)pyrimidm-2-yl)piperazi»e- l-carboxy!ate (89): To a stirred solution of compound 88 ( 160 mg, 0.61 mmol) in «-butanol (5 mL) under argon atmosphere were added iert-hmyi. piperazme- 1 -carboxylate 4 (342 mg, 1 .83 mmol) and A^A'-diisopropylethylamme (0.2 i mL, 1.2.2 mmol) in sealed tube at ^'f; the mixture was heated to 100 °C and stirred for 24 h. The reaction was monitored by TLC; after the reaction was complete, the vol.atil.es were removed in vacuo, the residue was diluted with water (20 mL), and extracted with EtOAc (2 x 30 mL). The combined organic extracts were dried over sodium sulfate, filtered and concentrated in vacuo to obtain the crude product. The crude product was purified through silica gel column chromatography using 30% EtOAc/ hexanes to afford compound. 89 (155 mg, 61 %) as white solid. TLC: 15% EtOAc/ hexanes (Rf 0.3); 1H- MR (I MS0-< 500 MHz): 5 9.05 (s, .1 H), 7.47 (d, 8.5 Hz, 2H), 7. 10 (d, J - 8.0 Hz, 2H>, 5.91 (s, I E), 3.68-3,66 (m, 4H), 3,43-3,37 (m,, 4H), 2.63-2.60 (m, 1 H), 2,24 (s,3H)_s 1.42 (s, 9H), 1.14 (d, J = 7.5 Hz, 6H). (00! 11 Synthesis of 6-isopropyl-2-(piperazin- 1 -yl)-A-(_irf-tolyS)p imidin-4-amiiie (90): To a stirred solution of compound 89 (155 mg, 0.37 mrno!) in C¾C¾ (5 mL) under argon atmosphere was added 4 N HCI in 1,4-dioxaue (0.47 mL, 1.87 mmol) at 0 °C; the mixture was warmed to RT and stirred for 4 h. The reaction was monitored by TLC; after the reaction was complete, the reaction mixture was diluted with water ( 15 mL), the pH was adjusted to --8 with aqueous saturated NaHCO.? solution (20 mL), and extracted with EtOAc (2 x 30 mL), The combined organic extracts were dried over sodium sulfate, filtered and concentrated in vacuo to obtain the crude compound 90 (100 mg, 85%) as white solid. TLC: 50% EtOAc/ hexanes (Rf. 0.2); 1H-NMR (DMSC * 500 MHz): δ 8.99 (_8> 1 H), 7.48 (d, J- 8.0 Hz, 2H), 7.08 (d, J^{■■■■■■} 8.0 Hz, 2H), 5.86 (s, I H }, 3.61-3,59 (m, 4H), 2.71 -2.70 (m, 4H), 2.64-2.58 (m, IH), 2.23 (s, 3HL 1.1.3 (d. J 7.5 Hz, 6B).

|00112| Synthesis of 6-isopropyl-2-(4-((4~methoxyphenyl) sulfonyl) piperazi«~l-yi)-N-(p- toly^'l) pyrimidin-4-amine (30): To a stirred solution of compound 90 ( 100 mg, 0.32 mniol) in CH2CI2 (5 ml.) under argon atmosphere were added 4-tnethoxybenzenesulfonyl chloride 40 (73 mg, 0.35 mmol) and pyridine (0.13 mL, 1 ,6 mniol) at 0 °C; the mixture was warmed to RT and stirred for 16 h. The reaction was monitored by TLC; after completion of the reaction, the reaction mixture was diluted with CH2CI2 (30 mL), washed with I N HCI (10 mL) and aqueous saturated NaHC(¾ solution (10 mL). The organic layer was separated, dried over sodium sulfate, filtered and concentrated in vacuo to obtain the crude product, which was triturated with 2% C%CI₂/ H-peinane to afford 30 (50 mg, 32%) as a white solid. TLC: 5% CH3OH/ CH₂C1₂ (Rf. 0.8); ^! -NMR (D SO-ifc 400 MHz): δ 9.03 (s, I H), 7.68 (d, J^~ 8.8 Hz, 2H), 7.41 (d, J- 8.0 Hz, 2H), 7.13 (d, J- S.S Hz, 2H), 7.08 (d, 8.4 Hz, 2H), 5.87 (s, IH), 3.82 (_s> 3H), 3.78 (t, :^::: 4.4 Hz, 4H), 2.89 ( ,./ === 4.8 Hz, 41:1), 2.56-2.52 (m, IH), 2.2 (s, 3H), 1.1 (d, J- 6.8 Hz, 6H); LC-MS: 97.21%; 482.4 ( *+l); (column: X-select CSH C-18 (50 * 3.0 mm, 3.5 μηι); RT 3.70 rain. 0.05% TFA (Aq):ACN; 0.8 mi mffl); I! PLC (parity): 98.80%; (column: Acqaity BEH C-18 (50 x 2.1 mm, 1.7 μ); RT 2.19 mm. ACN:0.025% TFA (Aq); 0.5 mUmin)

(IP! 3080332).

Example 9 -- Synthesis of Target Compound 31.

100113] Synthesis of 4-(ferf-hutyi)-2, 6-dichioropyrimidme (92): To a stirred solution of 2,4,6-trichlofopy.rimidine 7 (1.5 g, 8.19 mmol) in TBF (50 mL) under argon atmosphere were added teri-bvtiyi magnesium chloride 91 (2 M sol in diethyl ether, 6.12 mL, 12.29 mmol) and copper iodide (78 mg, 0.41 mmol) at -10 °C; the mixture was stirred at 0 °C for 1 h. The reaction was monitored by TLC; after completion of the reaction, the reacti on mixture was quenched with aqueous saturated ammonium chloride solution (50 mL) and extracted with EtOAc (2 x 60 niL), The combined organic extracts were dried over sodium sulfate, filtered and concentrated in vacuo to obtain the crude product. The crude product was purified through silica get column chromatography using 2% EtOAc/ hexanes to afford compound 92 (900 mg, 56%) as colorless semi solid. TLC: 10% EtOAc/ hexanes (R/i 0.5); ^JH-N R (CDC1¾ 500 MHz): 6 7.40 (s, HI), 1.32 (s, 91 ! }.

|00114| Synthesis of ^'6-(/er/-butyi)-2-chloro-N-( >-tolyl)p>Tiffiidm-4-amine (93): To a stirred solutio of compound 92 (500 mg. 2.43 mmol) in acetonitrile (8 ml.) under argon atmosphere were added -toluidine 2 (265 mg, 2.43 mmol) and triethylamine (0.68 mL, 4.87 mmol) in a sealed tube at RT; the mixrure was heated to 60 °C and stirred for 24 h. The reaction was monitored by TLC^'; after completion of the reaction, the volatiles were removed in vacuo, the residue was diluted with water (20 mL). and extracted with EtOAc (2 40 ml,). The combined organic extracts were dried over sodium sulfate, -filtered and concentrated in vacuo to obtain the cmde product. The crude product was purified through silica gel column chromatography using 7% EtOAc/ hexanes to afford compound 93 (70 mg, 10%) as a white solid, TLC: 20% EtOAc/ hexanes (Rf. 0.2); ^JH-N R (DMSO-r 400 Hz): δ 9.80 (s, 1 H), 7.44 id, J = 8.0 Hz, 2H), 7.16 (d, J - 8.0 Hz, 2H), 6,64 (s, IH), 2.27 (s, 3H), 1.22 (s, 9H).

Synthesis

4-(4-(/e /-butyl)-6-(p-tolylamino) pyrimidin-2-yl) piperaz.ine-1 - carboxylate (94): To a stirred solution of compound 93 (70 mg, 0.25 mmol) in »-buta»ol (5 mL) under argon atmosphere were added /er -butyi piperazine- 1. -carboxylate 4 ( 142 mg, 0.76 mmol) and Av^-diisopropylethyla ine (0.08 mL, 0.51 mmol) in a sealed tube at RT; the mixture was heated to 100 °C and stirred for 24 h. The reaction was monitored by TLC; after completion of the reaction, the volatiles were removed /« vacuo, the residue was diluted with water (20 mL) and extracted with EtOAc (2 x 30 mL). The combined organic extracts were dried over sodium sulfate, filtered and concentrated in vacuo to obtain the crude product. The crude product was purified through silica gel column chromatography using 30% EtOAc hexanes to afford compound 94 (75 mg, 69%) as a white solid. TLC: 15% EtOAc/ hexanes (Rf. 0.3); 'i- MR (DMSQ- 500 MHz): d 9.07 (s, IH), 7.49 (d, J= 8.0 Hz, 2H), 7.10 (d, J= 8.5 Hz, 2H), 6.03 (s, I H), 3.68-3.66 (m, 4H), 3.40-3.35 (m, 4H), 2.24 (s, 3H), 1.42 (s, H), 1.20 (s, 9B).

|0 llSf Synthesis of 6-(tert-hutyl)-2-(piperazm- 1 -yl)-A ^:'-( -toiyi)pyrimidin-4-amine (95): To a stirred solution of compound 94 (75 mg, 0, 18 mmoi) in CH₂Q₂ (5 mL) under argon atmosphere was added 4 MO in 1 ,4-dioxane (0.28 mL, 0.88 mmol) at 0 °C; the mixture was warmed to RT and stirred for 4 h. The reaction was monitored by TLC; after completion of the reaction, the reaction mixture was diluted with water (15 mL), the pM was adjusted to ~8 with aqueous saturated NaHCOj solution (10 mL), and extracted with EtOAc (2 x 30 mL), The combined organic extracts were dried over sodium sulfate, filtered and concentrated in vacuo to obtain the crude compound 95 (50 mg, 87%) as white solid. TLC: 50% EtOAc/ hexanes (Rf 0.2); *H~ MR DMSO-i _fe 400 MHz): δ 8.99 (s, IH), 7.48 (d, J - 8.8 Hz, 2H), 7.07 (d, J - 8.0 Hz, 2H), 5.98 (s, IH), 3.6.1 (t, J- 4.8 Hz, 4H), 2.72 (t, J - 4.8 Hz, 4H), 2.23 (s, 3H), 1.19 (s, 9H). Synthesis of 6-(/i;r/-bin.yl)-2-(4-({4-methoxyphenyl) sulfonyl) piperazin- i - l)-A'^?-(/.>-toSyi) pyrimidm-4~amine (31): To a stirred soiution of compound 95 (50 mg, 0.15 mmol) in C¾ (5 mL) under argon atmosphere were added 4-methoxybenzenesuifonyl chloride 40 (35 mg, 0,17 mmol) and pyridine (0,0 .mL, 0.76 mmol) at 0 ; the mixture was warmed to RT and stirred for 16 h. The reaction was monitored by T LC; after completion of the reaction, the reaction mixture was diluted with€¾(¾ (30 raL) and washed with I HCI (10 mL), followed by aqueous saturated NaHC<¾ solution (10 mL). The organic layer was dried over sodium sulfate, filtered and concentrated in vacuo to obtain the crude product,, which was triturated with 2% Q¾CI? »- pentane to afford 31 (30 mg, 40%) as a white solid, TLC: 5% CH3OH/ CH₂C1₂ (Rf. 0.9); ^XH- R (DM$0-<4 400 MHz): δ 9.05 (hr s, 1 H), 7.68 (d, J- 9.2 Hz, 2H), 7.42 (d_s J= 8.4 Hz, 2H), 7.13 (d, J - 9.2 Hz, 2H), 7.08 (d, ,/- 8.4 Hz, 2H), 6.00 (s, 1H), 3.82 (s, 3H), 3.80 (t, J - 4.4 Hz, 4H), 2.90 (t, J ^:::: 4.8 Hz, 4H ), 2.24 (s, 3H), 1.16 is, 9H); LC- S: 97.25%; 496.4 (M⁺-H); (column: X-sefect CSH C-18 (50 ^χ 3.0 mm, 3.5 μηι); RT 3.95r»m. 0.05% TFA (Aq):ACN; 0.8 ml/mm); HPLC (purity): 99.15%; (column: Eclipse-XDB-C- 18 (150 x 4.6 mm, 5 μιη); RT 13.55 min. ACN:5 niM NHjOAc (Aq); 1 .0 mL/mm) (ΪΡ13080340).

Example 10 - Synthesis of Target Compound 32

99

32

|0ΘΠ6| Synthesis of 2,4-dichloro-6-propylpyrimidine (97): A stirred solution of 6-propyl- 2~thioxo~2 ,3-dihydropyrimidin-4 (I.H)~one 96 ( i g, 5.81 mmol) in phosphoryl trichloride (5 mL) under argon atmosphere was heated to Π0 °C and stirred for 16 h. The reaction was monitored b TLC; after completion of the reaction, the reaction mixture was diluted with ice water (20 mL), neutralized with aqueous saturated ailC(¾ solution (20 mL) and extracted with CH2CI2 (2 x 30 mL). The combined organic extracts were dried over sodium sulfate, filtered and

concentrated in vacuo to obtain the crude product. The crude product was purified through silic gel column chromatography using 2% EtOAc/ hexanes to afford compound 97 (300 nig, 27%) as a colorless liquid. TLC: 10% EtOAc/ hexanes (¾: 0.8); 1H- M (CDCI 400 MHz): 5 7.15 (S, 1H), 2.72 (t, J ~ 7.6 Hz, 2H), 1.81-1.72 (m, 2H), 0.9 (t, J~ 7.6 H , 3H).

[00117} Synthesis of 2-chloro-6-propyl-iV-(/ toiyl) pyrimkiin-4-amme (98): To a stirred solution of compound 97 (300 mg, 1.57 mmol) in CHsC (5 mL) trader argon atmosphere were added .'-tohiiilini' 2 (205 mg, 1 ,88 mrrioi) and triethylamhie (0,45 mL, 3.14 mmol) at RT; the mixture was heated to 70 °C and stirred for 36 h. The reaction was monitored by TLC; after completion of the reaction, the volatiles were removed in vacua to obtain the crude product. The erode product was purified through silica gel column chromatography using 4% EtOAc hexanes to afford compound 98 (120 mg, 30%) as a sticky syrup. TLC: 10% EtOAc/ hexanes (R/. 0.4); 'll-NMR (BMS ~i¾, 400 MHz): δ 9.77 (s, 1H), 7.41 (d, J™ 8.4 Hz, 2H), 7.16 (d, J - 8,4 Hz, 2H), 6.51 (s, I E), 2.50-2.47 (m, 2H), 2.27 (s, 3H), 1.64- 1.59 (m, 2H), 0.89 (t, J- 7.6 Hz, 3H).

[00118} Synthesis of /erA-birtyl 4-(4~propyl^(p~tolylammo)p Timidtn-'2-yl)piperazroe- 1 - carboxylate (99): To a stirred solution of compound 98 (100 mg, 0.38 mmol) in B-butanoi (5 mL) under argon atmosphere were added er/^'-butyl piperazine- 1 -carboxylate 4 (107 mg, 0.57 mmol) and AvV-diisopropylethylamme (0.14 mL, 0.76 mmol) at RT; the mixture was heated to 100 °C and stirred for 20 h. The reaction was monitored by TLC^"; after completion of the reaction, the volatiles were removed in vacua to obtain the crude product The crude product was purified through silica gel column chromatography using 10% EtOAc/ hexanes to afford compound 99 (i 00 mg, 64%) as a white solid. TLC: 10% EtOAc/ hexanes (fy 0.8); 1H-NMR (DMSCM 400 MHz): δ 9.02 (s, 1 E), 7.46 (d, - 8.4 Hz, 211), 7.10 (d, 8.0 Hz, 2H)₅ 5.88 (s, 1H)₅ 3.66 (i, J- 5.2 Hz, 4H), 3.37 ft, J - 5.2 Hz, 4H), 2.36 (t, 7.6 Hz, 2H), 2.24 (s, 31 Ϊ), 1.66-1.56 (m, 2H), 1.42 (s, H), 0.90 (t, J- 7.6 Hz, 3H).

{00119} Synthesis of 2-(piperazin-i-yl)-6-propyl^ (100): To a stirred solution of compound 99 (100 mg, 0.24 mmol) in C.H CI2 (2 mL) under argon atmosphere was added 4 N HCI in 1 ,4-dioxane (0,30 mL, 1.20 mmol) at 0 °C; the mixture was warmed to RT and stirred for 2 h. The reaction was monitored by TLC; after completion of the reaction, the reaction mixture was diluted with water (15 mL) and extracted with CEhCia (2 x 20 mL), The aqueous layer was bastfied with 10% aqueous NaHCO._? solution (10 mL) and extracted with CH₂CI₂ (2 x 30 mL). The combined organic extracts were dried over sodium sulfate, filtered and concentrated m vacuo to obtain the erode product. The crude product was purified through silica gel column chromatography using 5% EtOAc/ hexanes to afford compound 00 (50 mg, 66%) as a white solid. TLC: 10% Ci¾OB/ C¾Ci₂ (R/. 0.3): O-NM (DMSO-d* 500 MHz): δ 8.94 (s, 1 H), 7.47 (d, J~ 8.0 Hz, 2H), 7.09 (d, J~ 8.5 Hz, 2H), 5.84 (s, IH), 3.61 -3.59 (m, 4H), 2.72-2.70 (m, 4H), 2.37-2.33 (m, 3H), 2.24 (s, 3H), 1 .63-1 .59 (m, 2H), 0.91 (t J ~ 7,Q Hz, 3H ).

|00120| Synthesis of 2-(4-((4-methoxyphenyi) sulfonyl) piperazin- i -yl)-6-propyl-N-(p- tolyl) pyrimidin-4-am.ine (32): To a stirred solution of compound 100 (50 mg, 0.16 mmol) in CH₂CI₂ (4 mL) under argon atmosphere were added pyridine (0.067 nil, 0.80 ramoi) and 4- methoxybenzenesuifonyl chloride 40 (36.5 mg, 0.17 mmol) at 0 °C; the mixture was wanned to RT and stirred for 3 h. The reaction was monitored, by TLC; after completion of the reaction, the reaction mixture was diluted with CH2G2 (15 mL) and washed with I HO (2 x 15 mL) and 10% aqueous allCOs (20 mL). The organic layer was dried over sodium sulfate, filtered and concentrated in vacuo to obtain the crude product, which was precipitated with 5% EtOAc/ hexanes to afford 32 (30 mg, 39%) as a white solid. TLC: 5% CH5OH/ C¾<¾ (Rf. 0.7);

MR (D SCM* 400 MHz): δ 9.03 (br s, 1H), 7,67 (d, J- 8.8 Hz, 2H), 7.40 (d, J~ 8.4 Hz, 211), 7.14-7.08 (m, 4H), 5.86 is, 1H), 3.82 (s, 3H), 3.78 (t, J^{■■■■■■} 5.2 Hz, 4H), 2.89-2.87 (m, 4H)₅ 2,32 (t, J= 7.2 Hz, 2H), 2.24 (s, 3H), 1.61-1.52 (m, 2H), 0.86 (t, J= 7.6 Hz, 3H); LC-MS:

98.96%; 482.6 (M ^; H ); (column: X-selec-t CSH C-l 8, (50 ■ 3.0 mm, 3.5 p,m); RT 3.76 mm. 0.05% TFA (Aq): ACN; 0.8 mL/mm); tJPLC (purity): 98.43%; (column: Acquity BEH C-l 8 (50 x 2.1 rani 1.7 μ}; RT 2.24 rain. ACN;0.O25% TFA (Aq); 0.5 mL min) (ΪΡ13080047).

Example 1 1 - Synthesis of Target Compound 33

|001211 Synthesis of 6~(trifiiwromethyi)pyrimidioe-2,4( 1 H,3 )-dione ( 103): To a stirred solution of ethyl 4.4_J4-trifIuoro-3-oxobutanoate 101 (3 g, 1 .30 mmol) in ethanol (30 mL) under argon atmosphere were added urea 102 (978 rag, 16.30 rnmol) and freshly prepared sodium ethoxtde (750 mg of Na in 30 mL of EtOH) at RT; the mixture was heated to 90 °C and stirred for 24 h. The reaction was monitored by TLC; after completion of the reaction, the volatiies were removed in vacuo, diluted with water (25 mL), acidified with 1 N HCl ( 10 mL) and extracted with EtOAc (2 x 40 mL). The combmed organic extracts were dried over sodium sulfate, filtered and concentrated in vacuo to afford compound 103 (650 mg, 22%) as a white solid. TLC: 5% C¾OH/ CH₂CJ₂ (fy 0.3); Ή- M (DMS0-i , 500 MHz): S 12.07 (s, 1 H), l LS4 (s, I B), 6.07 (s, 1H).

00122) Synthesis of 2,4-dich!oto-6-(trifl'uoroinethyl)pyrimidme (104): To a stirred solution of compound 103 (150 mg, 0.83 mmol) in D!V!F (5 ml.) under argon atmosphere was added sulferous dichloride (0.75 mL) in sealed tube at 0 °C; the mixture was heated to 75 ^C'C and stirred for 4 h. The reactio was monitored by TLC"; after completion of the reaction, the reaction mixture was diluted with ice water (20 mL), neutralized with 1 % aqueous NaHCO? solution (20 mL) and extracted with hexanes (2 x 30 mL), The combined organic extracts were dried over sodium sulfate, filtered and concentrated in vacuo at 35 °C to afford compound 104 ( 00 mg) as colorless liquid. TLC: 10% EtOAc/ hexanes (Rf 0.9);Ή- R (CDCfe, 500 MHz): δ 7.65 (s, IH).

{00123f Synthesis

To a stirred solution of compound 104 (400 mg, 1.86 mmoi) in C¾CN (6 mL) under argon atmosphere were added / oluidme 2 (202 mg, 1.86 mmoi) and triethyl amine (0.40 mL, 2.79 mmoi) in a sealed tube at RT; the mixture was heated to 70 °C and stirred for 24 h. The reaction was monitored by TLC: after completion of the reaction, the volatiies were removed in vacuo to obtain the crude product. The erode product was purified through silica gel column

chromatography using 7% EtOAc/ hexanes to afford compound 105 (120 mg, 22%) as a yellow solid, TLC: 15% EtOAc/ hexanes (Rf. 0.5); *H~NMR fDMS( *, 400 Μϊϊζ): δ 10.47 (br s, IH), 7.50-7.48 (m, 2H), 7.22 (d, J- 8.4 Hz, 20), 7.06 (br s, 1H), 2.30 (s, 3H).

{00124J Synthesis of /er/-butyl 4-{4-( olylamino)-6~(trifltioromethyl) pyrimidm~2~yl) piperazine-I-carboxylate (106); To a stirred solution of compound 105 (120 mg, 0.41 mmoi) in ff-buianol (7 mL) under argon atmosphere were added tert-butyl piperazine- 1 -carboxylate 4 ( 1 16 mg, 0.62 mmoi) and AyV-ch sopropyle ylamine (0.15 mL, 0,83 mmoi) at RT; the mixture was heated to 100 °C and stirred for 24 h. The reaction was monitored by TLC; after completion of the reaction, the volatiies were removed in vacuo to obtain the crude product. The crude product was purified through silica gel. column chromatography using 10% EtOAc/hexanes to afford compound 106 (140 mg, 77%) as a white solid. TLC: 5% EtOAc/ Toluene (Rf 0.8); *H~NMR (»MSO~i¾, 400 MHz): δ 9.66 (s, IH), 7.4 (d, J - 8.0 Hz, 2H), 7.17 (d, J - 8.0 Hz, 2H), 6.36 (s, IH), 3.69 (t, J^■■■ 5.6 Hz, 4H), 3.40 (t, J- 6.0 Hz, 4H), 2.27 (s, 311), 1.42 is, 9H).

(001251 Synthesis of 2-(piperazin-3 -yi)-A^f^-to3yD^

(107): To a stirred solution of compound 106 ( 140 mg, 0.32 mmoi) in (TLCL (3 mL) under argon atmosphere was added 4 N HCI in 1,4-dioxane (0.40 mL, 1.60 mmoi) at 0 °C; the mixture was wanned to RT and stirred for 2 h. The reaction was monitored by TLC; after completion of the reaction, the reaetion mixture was diluted with ice water (20 mL), neutralized with 10% aqueous NaHCO_.x solution (15 mL) and extracted with CHjC (2 x 30 mL). The combined organic extracts were dried over sodium sulfate, filtered and concentrated in vacuo to obtain the crude product, which was precipitated with 10% EtOAc/ hexanes to afford compound 107 (55 rag, 51%) as an off-white solid. TLC: 10% C¾OH/ C¾C1₂ (Rf 0.3); ^lH- R (DMSO-tfe 400 MHz): S 9.61 (s, I H), 7.48 (d, J- 8.0 Hz, 211), 7.15 (d, ./^::: 8.0 Hz, 2H), 6.33 (s, 1H), 3.66 (t, J ~ 4.8 Hz, 4H), 2.77 (t, J- 5.2 Hz, 4H), 2.26 (s, 3H).

[00126) Synthesis of 2-(4-((4-methoxyphenyl) sulfcmyl) piperaziti- 1 -yl)- V-(/ o!yi)~6- (triiluoromethyl ) pyr.ii din-4-amine (33); To a stirred solution of compound 107 (50 mg, 0.14 mmol) in CH₂G₂ (3 mL) under argon atmosphere were added pyridine (0.06 mL, 0.74 mmol) and 4~methoxybenzenesulfonyl chloride 40 (33.7 mg, 0.1.6 mmol) at 0 °C; the mixture was warmed to RT and stirred for 4 b. The reaction was monitored by TLC: after completion of the reaction, the reaction mixture was dilated with Q¾(¾ (15 mL), washed with 10% aqueous NaHC(¼ solution (10 mL) and 1 N HC1 (2 15 ml). The organic layer was dried over sodium sulfate, filtered and concentrated in vacuo to obtain the crude product which was triturated with 5% EtOAc/«-pentane (2 x 5 mL) to afford 33 (35 mg, 47%) as an off-white solid. TLC: 50% EtOAc/ hexanes (¾^■: 0.8); ¹H- MR (DIVISOR, 400 MHz): δ 9.65 (s, 1H), 7.68 (d, J - 8.8 Hz, 2H), 7.43 ( J- 8.4 Hz, 2H), 7.16-7.12 Cm, 4H), 6.33 (s, 1 H), 3.82 (s, 3H), 3.80 (t J === 4.8 Hz, 4H), 2.92 (t, J- 4.8 Hz, 4H), 2.26 (s, 3H); LC- S: 96.91%; 508.5 (M^÷÷l); (column: X-seiect CS1 I C-.18 (50 3.0 mm, 3.5 μτη); RT 4.37 mm. 5 mU NH₄OAc:ACN; 0.8 mL/min); UPLC (purity): 96.23%; (column: Acquity BEH C- 18 (50 x 2.1 mm, 1.7 μ); RT 3.05 min.

ACN:0.025% TFA (Aq); 0.5 mlJmm) (ΪΡ13080500).

Example 1.2 - Synthesis of 2-(4-((4-methox.yphe.nyl)siilfony!¾>iperazin- 1 -yl)-4-methyl-6- (methyisulfonyl)pyrimidine ( 170) - a Common Intermediate

4 N HCi in i,4-<fioxan«

166 16?

1S8

[80127| Synthesis of 2-chlotO-4-m;ethyl-6-(methylthio)pyrii»idme ( 66):

[ 612S] To a stirred solution of 2, 4>dichloro-6-methylpyrimidine 1 (200 mg, 1 .22 mraol) under argon atmosphere in THF (10 mL) was added sodium methanethioiate (103 mg, i .47 rarool in 4 mL of water) at -10 °C and stirred for 2 h. The reaction was monitored by TLC; after completion of the reaction, the reaction mixture was diluted with water (20 mL) and extracted with EtOAc (2 x 30 mL), The combined organic extracts were dried over sodiura sulfate, filtered and concentrated in vacuo to obtain the criide product. The erode product was purified through si lic-a gel column chromatography using 3% EtOAc/ hexanes to afford compound 166 (130 mg, 61%) as a white solid. TLC: 5% EtOAc/ Toluene (R 0.8); 1H-NME CDMSO-#/« 400 MHz): δ 7.38 (s, l H)_t 2.53 (s, 3H)_; 2.37 (s, 3H).

[0O129J Synthesis of fer*~butyl 4^4 uethyl-6^medtylmio)pyrimidin-2-yl)pipet¾zine-'t-' carboxylate (167):

fvteS

167 |0O13 j To a stirred solution of compound. 166 (100 rag, 0.57 mmol) in n-butanol (5 mL) under argon aimosphere were added er/~butyi pipera ine-] -carboxyiate 4 (160 mg, 0.86 mmol), diisopropylethylanirae (0.16 mL, 0.86 mmol) at RT; the mixture was healed to 100 °C and stirred for 24 h in a. sealed tube. The reaction was monitored by TLC; after completion of the reaction, the vo!ati!es were removed in vacuo to obtain the crude product. The crude product was purified through silica gel column chromatography using 10% EtOAc/ hexanes to afford compound 167 (120 mg, 65%) as a sticky white solid. TLC: 1 5% EtOAc/ hexanes (Mf. 0.7); ^!H~ NMR (BMSO- , 400 Hz): ό 6.48 (s, 1H), 3.70 (t, J~ 4.8 Hz, 4H), 3.78 (t J- 4.8 Hz, 4.H), 2.45 (s, 3H), 2.20 (s, 3H), 1.42 (s, 9H).

[00131 j Synthesis of 4-mefh.yI-6-(methylthio)-2-(piperazin-] -yl)pyrimidme (168);

[00132} To a stirred solution of compound 167 (2 g, 6.1.7 mmol) in ClMTa (40 mL) under inert atmosphere was added 4 N HC1 in 1,4-dioxane ( 10 mL) at 0 °C; the mixture was warmed to RT and stirred for 3 h. The reaction was monitored by TLC; after completion of the reaction, the volatiles were removed I» vacuo. The residue was neutralized with saturated NaHC(¾ solution (30 mL) and extracted with CHiCL (2 x 30 mL). The combined organic extracts were dried over sodium sulfate, filtered and concentrated in vacuo to afford crude compound 168 (1.2 g) as white solid. TLC: 10% MeOH CH₂C1₂ Cfy 0.2); *H-N R (DMSO-4* 400 MHz): δ 6.41 (s, .! H), 3.63 (t, J^{■■■■■■} 5.2 Hz, 4H), 2.70 ( J- 5.2 Hz, 4E), 2.43 (s, 3H), 2.17 (s, 3B).

[00133| Synthesis of 2-(4-((4-methoxyphenyl) sulfonyl) piperazin- 1 -yi)-4-methyl-6- methylthio) pyriirndiiie (169);

[00134} To a stirred solution of 168 (3.2 g, crude) in CH2O2 (30 mL) under argon atmosphere were added pyridine (2.18 mL, 26.75 mmol), 4-methoxybenzeuesidfony! chloride 35 (.! .21 g, 5.87 mmol) at 0 °C; the mixture was wanned to RT and stirred for 4 h. The reaction was monitored by TLC; after completion of the reaction, the reaction mixture was diluted with water (20 mL) and extracted with C¾(¾ (2 x 30 mL). The combined organic extracts were washed with 1 HCI (2 x 50 mL), 10% NaHCX¾ solution (2 x 50 mL), brine (30 mL), dried over sodium sulfate, filtered and concentrated in vacuo to obtain the crude product. The crude product was triturated with pentane (2 x 5 mL) to afford compound 169 ( 1.2 g, 57%) as white solid. TLC: 50% EtOAc/ hexanes (fy 0.S); 1H-NMR (DMSO-rf*, 400 MHz): δ 7.67 (d, J ~ 8.8 Hz, 2H), 7.13 (d, J - 9.2 Hz, 2H), 6.46 (s, 1H), 3.83 (s, 311), 3.81 (t, J - 5.2 Hz, 4H), 2.89 (t, J ^::: 4.8 Hz, 4H>, 2.41 (s, 3H), 2.16 (s, 3H).

00135| Synthesis of 2~(4~((4-methoxyphemT} sulfotiyl)piperaz.in~ 1 -y ])-4-methyl~6~

(rnethyisulfonyi)pyrimidine { 170);

170

(001361 T a stirred solution of 169 (1.2 g, 3.04 mmol) in C¾C (48 mL) under argon atmosphere were added m-chloroperoxybenzoic acid (1 ,4 g, 8.1 1 mmol) at 0 °C; the mixture was wanned to T and stirred for 24 h. The reactio was monitored by TLC; after completion of the reaction, the reaction mixture was diluted with water (50 mL) and extracted with CH₂C . (2 x 150 mL). The combined organic extracts were washed with 1.0% NaHCOj solution (100 mL), dried over sodium sulfate, filtered and concentrated in vacuo to obtain the crude product. The crude product was purified through silica gel column chromatography using 40% EtOAc/ hexanes to afford compound 170 (3 g, 77%) as an off-white solid. TLC: 60% EtOAc/ hexanes (_¾ 0.5); Ή-NMR (D!VfSCW 400 MHz): 5 7.6S (d, J - 9.2 Hz, 2H), 7.14 (d, J - 9.2 Hz, 2H), 7.03 (s, 1H), 3.88 (t, J ^:::: 4.8 Hz, 411), 3.83 (s, 3H), 3.21 (s, 311), 2.94 (t, J ^::: 4.8 Hz, 4H), 2.39 (s, 311).

Example 13— Synthesis of 4 hloro-2^4^(4-meihoxyphenyl)suifonyi)pipeTaziij~l ~yl)~6- me ylpymriidine (179) and compound 180 - Common Intermediates

[60137} Synthesis of 2^btm 1thio)^-methyl yiim!din^(3H -one (172):

172

[00138] To a stirred solution of 2-mercapto-6-methylpyrimidin-4(^'3/ )-one 171 (1 g, 7,04 mmol) hi 1 ,4-dioxane (10 mL) was added sodium hydroxide (563 mg, 14.07 mmol in 10 mL of water) and benzyl bromide (1.3 g, 7.74 mmol) at 0 °C; the mixture was heated to 50 °C and stirred for 1 h. The reaction was monitored by TLC; after completion of the reac tion, the reaction mixture was diluted with ice cold water (20 mL) and the pH was iieuiralized with 6 N HCL The precipitated solid was filtered, washed with EtOAc (2 x 5 mL), water (2 x 10 mL) and dried in vacuo to afford compound 172 (1 g, 62%) as a yello syrup. TLC; 40% EtOAc/ hexane (Rf. 0,5); 1H- R (DMSO-rf_s, 400 MHz): δ 12.50- 12.23 <m, 0), 7.42-7.39 (m, 2H), 7.33-7.22 (m, 30), 5.99 (br s, 10), 4.3? (s, 20), 2.20 ($, 30).

[00139) Synthesis of 2-(benzyIthio -isopro^xy-6~meihylpyrimidine ( 1.73):

{(Mil 40 j To a stirred solution of diisopropyl azodicarboxylate (1 ,3 g, 6.46 o moi.) m ether (10 mL) under argon atmosphere were added tri phenyl phosphine (1.6 g, 6.46 mmol) and compound J 72 (500 mg₅ 2.15 mmol) at ^' T and the mixture was stirred for 5 mitt. To this was added isopropyl alcohol (0.4 mL, 5.38 mmol) at T; the reaction was stirred for 72 h. The reaction was mom iored by TLC; after completion, of the reaction, the volatil.es were removed in vacuo to obtain the crude product. The crude product was purified through silica gel column chromatography using 5% EtOAc/ hexanes o afford compound 173 (350 mg, 59%) as a yellow syrup. TLC: 40% EtOAc/ hexanes (Rf 0.7); 1H- MR (BMSO-rf*, 400 MHz): 5 7.41 (d, J = 8.4 Hz, 2H), 7.32-7.28 (m, 2H), 7.25-7.21 (m, IH), 6.40 (s, IH), 5.30-5.29 (m, I H), 4.36 (s, 2H)_? 2.29 (s, 3H), 1.25 (d, J - 6.4 Hz, 6H).

f 001 1 J Synthesis of 2-(ben¾yisidfon l)-4~isopropoxy~6-meihylpyriraidine (174):

| 0Θ142| To a stirred solution of compound 173 (650 mg, 2 ,37 mmol) in (¾0% (10 mL) under argon atmosphere was added w-chloroperoxybenzoic acid (818 mg, 4.74 mmol) at 0 °C; the mixture was wanned to RT and stirred for 4 h. The reaction was monitored by TLC; after completion of the reaction, the reaction mixture was diluted with water (20 mL) and extracted with CH2CI2 (2 x 30 mL). The combined organic extracts were washed with. .10% NaHCOs solution (30 ml.) dried over sodium sulfate, fi ltered and concentrated in vacuo to obiain the crude product. The crude product was purified through silica gel column chromatography using 40% EtOAc hexanes to afford compound 174 (530 mg, 73%) as white solid. TLC: 30% EtOAc/ hexanes (Hf. 0.4); 1H- MR

400 MHz): 6 7.39-7.29 (ni, 5H), 7.02 (s, I H), 5.36-5.30 (m, I H), 4.90 (s, 2H), 2.4 (d, J- 4.8 Hz, 3H), 1.31 (d, J - 6.0 Hz, 6H). f 001431 Synthesis of ten-butyl 4-(4 sopropoxy-6-methy!p>tiraidra-2-yl)ptpera2;ine- 1 - carboxylare ( 75):

175

{00144} To a stirred solution of compound 174 (200 nig, 0.65 mmol) in i ,4-dioxane (10 mL) under argon atmosphere were added ter/-buty! p.ip razi.ne-1 -carboxylate 4 (364 mg, 1.96 mmol) and diisopropylethylarnine (0.28 mL, 1.96 mmol) at RT; the mixture was heated to 90 °C and stirred for 48 h. The reaction was monitored by TLC; after completio of the reaction, the volatiies were removed in vacuo to obtain the crude product. The crude product was purified through silica gel column chromatography using 20% EtOAc/ hexanes to afford compound 175 (\ 50 mg, 64%) as a yellow syrup. TLC: 40% EtOAc/ liexanes (Rf. 0.6); Ή-NMR (I>MSG-<¾, 400 MHz): δ 5.89 (s, I H), 5.24-5.18 (m, 1 H), 3.68-3.65 (m, 4H), 3.38-3.58 (m, 4H), 2, 17 (s, 3H), 1.48 (s, 9H), 1.26 {d, ./ === 6.0 Hz, 6H).

(00145 Synthesis of ^'4-.isopropoxy-6-methyl-2-(piperazm- 1 -yi) pyriraidrae (176):

176

{00 46| To a stirred solution of compound 175 (1 0 mg, 0.44 mmol) in CH2CI2 (5 mL) under inert atmosphere was added 4 N HC1 in 1 ,4-dioxane (0.6 mL) at 0 "C; the mixture was wa med to RT and stirred for 4 h. The reaction was monitored by TLC; after completion of the reaction, the volatiies were removed in vacuo. The pH of the residue was neutralized with saturated NaHCQ* solution (30 mL) and extracted with€¾(¾ (2 x 30 mL). lire combined organic extracts were dried over sodium sulfate, filtered and concentrated in vacuo to afford compound 176 (80 mg, 80%) as a white solid. TLC: 40% EtOAc/hexanes (Rf. 0.2); ^!ii-NMR (0MSC * 400 MHz): 5 5.81 (s, IH), 5.22-5.12 (m, IH), 3.62-3.58 (ra, 4H), 2.72-2.65 (in, 4H), 2.12 (s, 3M), 1.25 (d, J^:::: 6.0 Hz, 61-1). f 00147! Synthesis of4-isopmpoxy-2-(4-(<4-metlaoxyphenyl)sulfonyi)pipefazm-l-y!)-6- methylpyrimidine (177):

[06148] To a stirred solution of 176 (80 mg, 0.35 mmol) in CH2CI2 (5 raL) under argon atmosphere were added pyridine (0,14 mL, 2.2 mmol) and 4-methoxyberizenesui.fonyl chloride 35 (100 mg, 0.48 mmol) at 0 °C; the mixture was warmed to RT and stirred for 4 h. The reaction was monitored by TLC; after completion of the reaction, the reaction mixture was diluted with water (20 mL) and extracted wit CHjCfe (2 x 30 mL). The combined organic extracts were washed with 1 N HCI (20 mL), 10% NaHCOs solution (30 mL), brine (30 mL), dried over sodium sulfate, filtered and concentrated in vacuo to afford crude compound 17 (100 rag) as an off-white solid. TLC: 5% MeOH/ CH₂C1₂ (Rf. 0.8); 1H-NMK CDMSO-#/_#, 400 MHz): 5 7.67 (d_s J^{■■■■■■} 7/2 Hz, 2H), 7.13 (d, J - 7.2 Hz, 2H), 5.87 (s, I E), 5.18-5.12 (m, 1.H), 3.83 (s, 3H), 3.78 (t, J = 4.8 Hz, 4H), 2.88 (t, J- 4.8 Hz, 4H)₅ 2.13 (s, 3H), 1.22 (d, J = 6.0 Hz, 6H).

[06149] Synthesis of 2~(4~((4-methoxyphenyl }suifonyl)piperazin- 1 -yl}-6~

met!iylpyrimidin-4 (3H)-o«e (178):

[06150] To a stirred solution of compound 177 ( 00 mg, 0.24 mmol) in acetic acid (5 mL) was added 1 % aqueous H2SO₄ (5 mL) at 0 °C and the mixture was heated to 90 °C for 2 h. The reaction was monitored by TLC; after completion of the reaction, the volattles were removed in vacuo. The pH of the residue was neutralized with 4 N aqueous aOH solution (30 mL) and the aqueous mixture was extracted with 10% MeOH/GHbC (2 x 30 raL). The combined organic exiracis were dried over sodium sulfate, filtered and concentrated in vacuo to afford compound 178 (70 mg, 78%) as an off-white solid. TLC: 5% MeOH/ CH₂CI₂ (R_f: 0.2); 'H- MR (BMSO- d₆, 400 MHz): δ 7.67 (d_s J- 7.2 Hz, 2H), 7.14 (d, J- 7.2 Hz, 2H), 5.57 (s, I H), 3.S4 (s, 3H), 3.69 (t, J - 4.8 Hz, 4H), 2.86 ( J = 4.8 Hz, 4H), 2.02 (s, 3H). 001511 Synthesis of 4^hloro-2-(4-((4-methoxyphenyl)s«lfony!)piperazin-l ~yl -6- methylpyrimidine (179):

[00152] To compound .178 (70 mg, 0, 19 mmol) was added phosphorous ox chloride (3 mL) under argon atmosphere at 0 °C; the mixture was heated at 90 °C for 3 h. The reaction was monitored by T C; after completion of the reaction, the volati!es were removed in vacuo. The pH of the residue was neutralized with aqueous MaHCO.i solution (30 mL) and the aqueous mixture extracted with EtOAc (2 x 30 mL). The combined organic extracts were dried over sodium sulfate, filtered and concentrated in vacuo to afford compound 179 (50 mg, 68%) as an off-white solid. TLC: 5% MeOH CH2CI2 (¾ 0.7); Ίϊ- R (DMSO-<¾, 400 MHz): δ 7.66 (d, J 7.2 Hz, 2H), 7.13 (i J 6.8 Hz, 2B), 6.65 (s. I B), 3.83 (s. 31 H 3. SO (t, ./ 4.8 Hz, 3H), 2.91 (t, J - 4.8 Hz, 4H), 2.24 (s, 3H).

[0 153] in a similar manner, compound 180 was prepared:

Example 14 - Preparation of Target Compounds 34-45

[00154] Further target compounds were prepared using compounds 170, 179, and 180 reacted with various amines employing the following typical procedures B, (.^'. or D and the results are shown in Table 2 below.

[00.155| Typical procedure SB: A mixture of 170 (75 mg, 0.17 mmol) and 4-bromoamline

(1 g) was heated at 120- 130 °C in a sealed tube for 4 h. The reaction was monitored by TLC; after completion of the reaction, the reaction mixture was diluted with water (20 ml.) and extracted with CH2CI2 (3 x 50 mL). The combined organic extracts were dried over sodium sulfate, filtered and concentrated in vacuo to obtain the crude product. The crude produc was either directly dried in vacuo or triturated or purified by column chromatography or preparative HPLC to afford the desired compound. f 001561 Typical procedure C: To a stirred solution of compound 179 (70 mg, 0.18 mmol) in l ,4~dioxane (3 ml.,) under argon atmosphere were added 4-(mf1.uorometh 1)aniii.ne (32.4 mg, 0.20 mmol) and cesium carbonate (71 mg, 0.21 mmol) at RT, and the mixture was purged with argon for 30 mm. To this were added Pd2 d a)3 (4 mg, 0.004 mmol), Xantphos (5,2 mg, 0.009 mmol), and the mixture was heated to 1 0-120 ^' C and stirred for 1 h. The reaction was monitored by TLC; after completion of the reaction, the volatiles were removed in vacu to obtain the crude product. The residue was diluted with water and extracted with EtOAc (2 x 20 mL). The combined organic extracts were dried over sodium sulfate, filtered and dried in vacuo to obtain the crude product The crude product was directly dried m vacuo, triturated or purified by column chromatography or preparative HPLC to afford the desired compound.

|00157| Typical procedure D: A mixture of compound 1.80 (35 mg, 0.091 mmol) and/?- antsidine (1 1.3 mg, 0.0 1 mmol) was dissolved in ?-dioxane (2 mL). An HC1 solution (4 N i p- dioxane) was added dropwise until the solution was acidic b pH paper. The reaction was heated at 90 °C for 1.6 h. The reaction was monitored by TLC; after completion the reaction mixture was diluted with water (10 mL) and extracted with CH2CI_.2 (3 x 10 mL). The combined organic extracts were dried over sodium sulfate, filtered and concentrated in vacuo to afford to obtain the crude product. The crude product was either directly dried in vacuo or triturated or purified by column chromatography or preparative HPLC to afford the desired compound.

Table 2

(00158| Target compound^' 5 is shown below and ma be prepared by known methods;

45

Example 15 - Capsid Assembly Assay

{0 .159J A screening for assembly effector activity was conducted based on a fluorescence quenching assay developed in the Ziotnick lab (Stray t al._y 2006; Ziotnick ei a/., 2007). A Cp mutant is specifically labeled with a fluorescent dye. In the dimeric state fluorescence is intense. However, when the Cp assembles, the dye moiecuies accumulate at fivefold and quasi-sixfold vertices to self quench by up to 95%. M the high throughput screen, the Cp concentration is chosen so that addition ofNaCl, typically 150 jnM or 300 ni is sufficient to induce about 25% assembly. Thus, assembly effectors that enhance assembly are readily detected.

(00160| As illustrated by the effect of CpAM molecules on HBV Cp assembly, as measured using the fluorescence quenching assay, the test revealed that the CpAM molecules enhanced assembly kinetics and stabilized protein-protein interactions (Table 3). Control reactions, with no drug, show 25±5% assembly in a 24 h time period. Table 3

42 69

43 97

44 92

45 87

Example 1 - Assay Measuring Activity of Test Compounds on Viral Production from AD38 Cells

\ Ui) AD38 cells grown in a 175 cm flask with Growth Medium (DMEM/F12 (1 :1) (cat# SH30023.01, Hycione, I Pen/step (eat#: 30-002-CL, Mediateeh, Inc), 10% PBS (cat#: 101 , Tissue Culture Biologies), 250 pg mL G418 (cat#: 30-234-CR, Media tech, inc), 1 pg/mL Tetracycline (cat#: T3325, Teknova}) were detached with 0.25% trypsin. I^'etracycl e-free treatment medium (15 mL DMEM/F12 (1: 1) (cat S 30023.01, Hycione, x Pen/step (cat#; 30- 002-CL, Medtatech, Inc), with 2% BS, Tet-system approved (cat#; 631 106, Clontech) were then added to mix and spun at ί 300 rpm for 5 min. Pelleted cells were then re- suspended/ washed with 50 mL of .1 BS 2 times and 10 mL treatment medium one time.

AD38 cells were then re-suspended with 10 mL of treatment medium and counted. Well of a collagen coated 96-we!i NUNC microliter plate were seeded at 50,000/well in 180 μΐ. of treatment medium, and 20 μΐ of either 10% DMSO (Control) or a iOX solution of test compound in 1 % DMSO in treatment media was added for a final compound concentration 1, 3, or 10 μ. (1 ,0% final [DMSO]) and plates were incubated for 5 days at 37 °C.

|00I<»2| Subsequently viral load production was assayed by quantitative PCR of the core sequence. Briefly, 5 u L of clarified supernatant was added to a PCR reaction mixture that contained forward primers HBV-f S -CTGTGCCTTGGGTGGCTTT-S', Reverse primers HBV-r 5 AA.GGAAAGAAGTCAGAAGGCAAAA-3' and Fluorescent TaqMan^ Probes HBV-prohe 5'-FAM/AGCTCCAAA/ZE /TTCTTrATAAGGGTCGATGTCCATG/3iABkFQ -3' in Quanta Biosciences PerfeCTa* qPCR Toughmix*^', and was subsequently on an. Applied Biosystems V11A7 in a final volume of 20 ,uL. The PCR mixture was incubated at 45 °C for 5 minutes, then 95 °C for 10 min, followed by 40 cycles of 10 seconds at 95 °C and 20 seconds at 60 °C. Viral load was quantitated against known standards by using Vii A™ 7 Software. Viral load in the supernatant from wells with treated cells were compared against viral load in supernatant from DMSO control wells (> 3 per plate), hi Table 4, concentrations of test compound causing reductions in viral load greater than at least 3 standard deviations from the DMSO controls across all plates were consideired active, with (+) depicting meets criteria for significant activity, and (·+·+) depicting exceeds criteria.

Table 4

{00163| While the invention has been disclosed in connection with the preferred embodiments shown and described in detail, various modifications and improvements thereon will become readily apparent, to those skilled in the art. Accordingly, the spirit and scope of the present invention is not to be limited by the foregoing examples, but is to be understood in the broadest sense allowable by law. EQUIVALENTS f00I64| Those skilled in the art will recognize, or be able to ascertain using no more than routine experimentation, many equivalents to the specific embodiments of the invention described herein. Such equivalents are intended to be encompassed by the following claims,

INCORPORATION BY REFERENCE

|0016S| The entire contents of all patents, published patent applications, websites, and other references cited herein are hereby expressly incorporated herein in their entireties by reference.

Claims

We claim:

1. A pharmaceutical composition comprising: (i.) a compound of Formula 1 having the

stnscture;

Formula 1

or a pharmaceutically acceptable salt or stereoisomer thereof wherein:

X is selected from the group consisting

q is 0, .1 , 2, 3 or 4;

p is 0, 1 , 2, 3, or 4;

r is 0, 1, 2, 3, or 4;

s is independently for each occurrence selected from the group consisting of -H, -CV Qalkyi, -Cj-Qalkoxy, -CrC<ia kyl-0-Ci-C¾a!kyl_; halogen, cyano, -OH, -C(0)H, -CQjR', - C(0)N( ')(R"), -C(0)Cr-C₆al , - (R')(R")₅ -NO2, -N(R^C(0)Ci-Csalkyl, ~S(O -V Cealkyl, -N(R S(O Cj -Qsalkyl, and -S(0)_w-N(R^!)fR"};

w is 0, .1 or 2;

R^f is independently for each occurrence selected from the group consisting of -H and -Cj- Csalky!;

R" is independently for each occurrence selected from the group consisting of ~H and - CrQalk J; or R.' and R" are taken together with the nitrogen atom to which they are attached to form a 4-7 me bered heterocyclic ring;

R^" is independently for each occurrence selected from the group consisting of -H, -Ci- QalkyL -Cj-G lkoxy,

halogen, cyano, -OH, -C(0)H, -CCbR', - C(0)N(R')(R"), -C(0)Ci-C6alkyl, -NfR'XR"), ~NQ_2? -N(R C(O)Ci-C<;alkyI. -S(0) -C_t- Qalkyl, -NCR S(O)_w Qalkyl._; and ~S(0)_w-N(R^f)(R'^f); and R is selected from the group consisting of -H and -Ci-CeaHcyl;

wherein Cj-Qalkyl or C ^ lkoxy may be independently for each occurrence optionally substituted with one. two, or three halogens; and

(ii) a pharmaceutically acceptable excipient.

The pharmaceutical composition according to claim 1, wherein is I .

The pharmaceutical composition according to claim 1, wherein p is 2.

The pharmaceutical, composition according to claim 1 , wherein the compound of Formula I is represented by Formula I -A:

Formula 1 - A;

or a pharmaceutically acceptable salt or stereoisomer thereof, wherein.:

R" is independently for each occurrence selected from the group consisting of -H and halogen;

R^*" is independently for each occurrence selected from the group consisting of -B, -C €₆alkyl, -Cj-Qalkoxy, -Ci-Csalkyl-O-d-Csalkyl, halogen, cyaao, -OH, -C(Q)H, «C(¾ ', - CiO)N(R¾R'% -C(0)Ci-Oialk>i -N(R.'KR")_> -NG_¾ - (R')C(0}C,^»C₆alkyl, -S(0)_w-C Qalkyl, - (R.')S(0)_w-C_rC^a!ky!₅ and -8(Ό)_χν-Ν{Χ')(Κ.");

"^'1 is independently for eac occurrence selected from the group consisting of -H, -C C_f)alkyi, -CrC^alkoxy, -C j -Qai.kyl -O-C i -C_halky I. halogen, cyano, -OH, -C(0)H, -CO₂R', - C(0)Ni:R')(R^?')_? -CiOX -Cs Sk i, - (R')(R"), -N<¼, -N(R C(O)C_¾ «alkyi, -S(0)_w-Ci- Qalkyl, - (R')S(0)_w-C C_(>alkyl, and -S(0)w-N(R')(R"); and

R ⁴ is independently for each occurrence selected from the group consisting of -B and halogen;

R'" is independently for each occurrence selected from the group consisting of-H, -Cj- C₆alkyl, -C₍-C«alkoxy, -C C6alkyl-0-Ci-C₆alkyl₅ halogen, cyano, -OH, -C(0)H, -CChR', - C(0)N(R')(R"), ^(OX Qalkyi, -NfR')(R")_? -N0_2> -N(R')C(0)C C₆aikyl₅ -S(OV-C_{- CfialkyL - ( ^?)S(0)_W-C!-C6 lk l₅ and -S(0)_w-N(R^f)CR"); wherein CrQaikyl or CVQalkoxy may be independently for each occurrence optionally substituted with one, two, or three halogens.

5. The pharmaceutical composition according to claim 4, wherein R^"1 and/or R²⁴ is -H.

6. The pharmaceutical composition according to claim 4 or 5, wherein ^™ is selected from the group consisting of H, -C Q iky!, -CVQalkoxy, -CrC_fialkyl-O-Ci-Qalkyi, halogen, cyano, -OH, -C(0)H, -C0₂R', -C(0)N(R')(R"}, -C(0)Ci-C₆alkyl._; -N(R')(R"), -N0₂, - N(R')C(0)Cj.C6alkyl,

-N(R')S(OVCs-Ol.kyl, and ~S(0)«~N(R'XR").

7. The pharmaceutical compositio according any one of claims 4-6, wherein ^{~^} is

independently for each occurrence selected from the group consisting of-H, -CVQalkyl, - CrCf,alkoxy, and halogen,

8. The pharmaceutical composition according to any one of claims 4-7, wherein is selected .from the group consisting of H, -Ci-Cgalk l, -Ci-Gsalkoxy, ~C i -C¼alkyl~Q-C j -Cealkyl, halogen, cyano, -OH, -C(0)H, ~C0₂R^f, -C(0)N(R.')(R")_> ~CiO)C C₆aiky!, ~N(R^f){R' -N0₂, - (R C(O)CrC₆alkyh -S(Ok~C_rQaikyL - (R^?)S(0)_w-Ci-C₆aikyl₅ and -S(0)_w.N(R'}CR").

9. The pharmaceutical composition according to any one of claims 4-8, wherein R is

independently for each occurrence selected from the group consisting of -H, -Cj-Qalkyl. - C_f -C_fjalkoxy, and halogen.

10. The pharmaceutical composition according to any one of claims 4-9, wherein R ^" is selected from the group consisting of -11. -Ci-Cgalkyl, -Cj-Gsaikoxy, halogen, cyano. ~C(¾R', - M(R^f}C(0)C) -C6alkyi, ~CiO)N(R')(R'% -C(0)C_}-C^lkyl, and ~N(R^f)(R").

1 1. The pharmaceutical composition according to any one of claims I -10, wherein R^! is selected independently for each occurrence from the group consisting of -B, -CrQalkyI, -C

Cftfilkoxy, halogen, cyano, and -OH.

12. The pharmaceutical composition according to any one of claims I -1 1 , wherein q is 1 or 2.

13. A pharmaceutical composition according any one of claims 4-11, wherem the compound of Formula 1 is represented by Formula 1-B;

R² ' R²²

Formula ! -B or a pharmaceutically acceptable salt or stereoisomer thereof.

14. The pharmaceutical, composition according to any one of claims 1-13, wherein R⁵ is selected from the group consisting of -H, -C¾, -CH2CH3, -C ?, -F, -CI, -Br, cyano, -OCH3, and -

15. The pharmaceutical composition according to claim 4, wherein R²³ is selected from the group consisting of -H, -C¾, -F, and -OC¾.

16. The pharmaceutical, composition according to any one of claims 4-13, wherein R.^2i> is selected from the group consisting of -H, -C%, -CH₂C¾,

-CF -F, -CL -OH, - OC¾, -OCH2CH3, ~QC(CH₃)₃, ~OCH₂CH₂CH₂Cl i_3i -NM₂, -NBCI¾, ~NHC(0)CH₃, - NHC(0)CF₃, -OCHF₂, and -OCF₃.

17. The pharmaceutical composition according to any one of claims 1 -16, wherein R * is selected from the group consisting of -C¾, «CH(C¾ , -CH2.CH2CH3, -CF¾, and -C(CH₃}3.

18. The pharmaceutical composition according to any one of claims 1-3, wherein ^" is selected from the group consisting of -H, ~0¾₅ ~C¾CHj, -CF3, -F, -CI, -Br, cyano, ~(X¾, and -

19. A method of treating, ameliorating, preventing, or substantially delaying a hepatitis B viral infection in an individual, the method comprising administering to the individual a

pharmaceutical composition according to any one of claims -18.

20. Use of a compound of Formula 1 , Formula I -A, or Formula 1 -B according to any one of claims 1 -18 in the manufactiite of a medicament for the treatment of a hepatitis 8 viral infection.