EP0604529A1 - Pyridine compounds for treating leukotriene-related diseases - Google Patents

Pyridine compounds for treating leukotriene-related diseases

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Publication number
EP0604529A1
EP0604529A1 EP92920043A EP92920043A EP0604529A1 EP 0604529 A1 EP0604529 A1 EP 0604529A1 EP 92920043 A EP92920043 A EP 92920043A EP 92920043 A EP92920043 A EP 92920043A EP 0604529 A1 EP0604529 A1 EP 0604529A1
Authority
EP
European Patent Office
Prior art keywords
phenyl
pyridyl
methoxyphenyl
reaction
carboxyethenyl
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP92920043A
Other languages
German (de)
French (fr)
Inventor
Pamela Anne Chambers
Robert A. Daines
Dalia R. Jakas
William D. Kingsbury
Israil Pendrak
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SmithKline Beecham Corp
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SmithKline Beecham Corp
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Filing date
Publication date
Application filed by SmithKline Beecham Corp filed Critical SmithKline Beecham Corp
Publication of EP0604529A1 publication Critical patent/EP0604529A1/en
Withdrawn legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D401/00—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom
    • C07D401/02—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom containing two hetero rings
    • C07D401/12—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom containing two hetero rings linked by a chain containing hetero atoms as chain links
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P17/00—Drugs for dermatological disorders
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P37/00—Drugs for immunological or allergic disorders
    • A61P37/08—Antiallergic agents
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P43/00—Drugs for specific purposes, not provided for in groups A61P1/00-A61P41/00
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D213/00—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members
    • C07D213/02—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members
    • C07D213/04—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom
    • C07D213/60—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
    • C07D213/62—Oxygen or sulfur atoms
    • C07D213/63—One oxygen atom
    • C07D213/65—One oxygen atom attached in position 3 or 5

Definitions

  • This invention relates to certain compounds containing a substituted pyridyl group linked to a substituted phenyl group by an alkyl or heteroatom-containing tether and their use for treating diseases arising from or related to leukotrienes, particularly leukotriene B4. As such their utility lies in antagonizing the effects of leukotrienes.
  • the family of bioactive lipids known as the leukotrienes exe ⁇ pharmacological effects on respiratory, cardiovascular, and gastrointestinal systems.
  • the leukotrienes are generally divided into two sub-classes, the peptidoleukotrienes (leukotrienes C4, D4 and E4) and the dihydroxyleukotrienes (leukotriene B4).
  • This invention is primarily concerned with the hydroxyleukotrienes (LTB) but is not limited to this specific group of leukotrienes.
  • Leukotrienes are critically involved in mediating many types of cardiovascular, pulmonary, dermatological, renal, allergic, and inflammatory diseases including asthma, adult respiratory distress syndrome, cystic fibrosis, psoriasis, and inflammatory bowel disease.
  • LTB4 has been established as an inflammatory mediator in vivo. It has also been associated with airway hyper-responsiveness in the dog as well as being found in increased levels in lung lavages from humans with severe pulmonary dysfunction.
  • the compounds and pharmaceutical compositions of the present invention are valuable in the treatment of diseases in subjects, including human or animals, in which leukotrienes are a factor.
  • R is Ci to C20-aliphatic, unsubstituted or substituted phenyl Cj to C ⁇ o-aliphatic where substituted phenyl has one or more radicals selected from the group consisting of lower alkoxy, lower alkyl, trihalomethyl, and halo, or R is Cj to C20-aliphatic-O-, or R is unsubstituted or substituted phenyl C to Cjo-aliphatic-O- where substituted phenyl has one or more radicals selected from the group consisting of lower alkoxy, lower alkyl, trihalomethyl, and halo
  • Rl is -(Ci to C5 aliphatic)R 4 , -(Ci to C 5 aliphatic)CHO f -(Ci to C 5 aliphatic)CH20R8, -R4, -CH 2 OH, or CHO;
  • R2 is H, halo, lower alkyl, lower alkoxy, -CN, -(CH ⁇ nR ⁇ -CH(NH2)(R4), or -(CH2) n R9 where n is 0 - 5 and where R9 is -N(R7)2 where each R7 is independently H, or an aliphatic group of 1 to 10 carbon atoms, or acyl of 1-6 carbon atoms, or a cycloalkyl-(CH 2 )n- group of 4 to 10 carbons where n is 0-3, or both R7 groups form a ring having 4 to 6 carbons; or
  • R3 is hydrogen, lower alkyl, lower alkoxy, halo, -CN, R4, NHCONH2, or OH; each R 4 group is independently -COR5 where R5 is -OH, a pharmaceutically acceptable ester-forming group -OR ⁇ , or -OX where X is a pharmaceutically acceptable cation, or R5 is -N(R7)2 where each R7 is independently H, or an aliphatic group of 1 to 10 carbon atoms, or a cycloalkyl-(CH2)n- group of 4 to 10 carbons where n is 0-3, or both R7 groups form a ring having 4 to 6 carbons, or R 4 is a sulfonamide, or an amide, or tetrazol-5-yl; and
  • R8 is hydrogen, Ci to C ⁇ alkyl, or Ci to C ⁇ -acyl, exlcuding those compounds where R2 and R3 are other than hydrogen and are substituted in the 2 and 6 positions.
  • this invention covers pharmaceutical compositions containing the instant compounds and a pharmaceutically acceptable excipient
  • Treatment of diseases related to or caused by leukotrienes, particularly LTB4, or related pharmacologically active mediators at the end organ are within the scope of this invention.
  • This treatment can be effected by administering one or more of the compounds of formula I alone or in combination with a pharmaceutically acceptable excipient.
  • Processes for making these compounds are also included in the scope of this invention, which processes comprise: a) forming a salt, or b) hydrolyzing an ester to give a salt or acid; c) forming an ester, d) forming an amide; e) oxidizing a thio ether, f) forming a compound of formula I by treating a 6- halomethylpyridyl compound with tha appropriate mercaptobenzoate or hydroxybenzoate.
  • Aliphatic is intended to include saturated and unsaturated radicals. This includes normal and branched chains, saturated or mono or poly unsaturated chains where both double and triple bonds may be present in any combination.
  • the phrase "lower alkyl” means an alkyl group of 1 to 6 carbon atoms in any isomeric form, but particularly the normal or linear form.
  • Lower alkoxy means the group lower alkyl-O-.
  • Halo means fluoro, chloro, bromo or iodo.
  • Acyl means the radical having a terminal carbonyl carbon.
  • substituted phenyl ring When reference is made to a substituted phenyl ring, it is meant that the ring can be substituted with one or more of the named substituents as may be compatible with chemical synthesis. Multiple substituents may be the same or different, such as where there are three chloro groups, or a combination of chloro and alkyl groups and further where this latter combination may have different alkyl radicals in the chloro/alkyl substituent pattern.
  • a pharmaceutically acceptable ester-forming group in R2 and R3 covers all esters which can be made from the acid function(s) which may be present in these compounds.
  • the resultant esters will be ones which are acceptable in its application to a pharmaceutical use. By that it is meant that the mono or diesters will retain the biological activity of the parent compound and will not have an untoward or deleterious effect in their application and use in treating diseases.
  • esters are, for example, those formed with one of the following radicals: Ci to C6 alkyl, phenyl Ci-C6alkyl, cycloalkyl, aryl, arylalkyl, alkylaryl, alkylarylalkyl, aminoalkyl, indanyl, pivaloyloxymethyl, acetoxymethyl, propionyloxymethyl, glycyloxymethyl, phenylglycyloxymethyl, or thienylglycyloxymethyl.
  • ester-forming radicals are those where R3 is alkyl, particularly alkyl of 1 to 10 carbons, (ie CH3- (CH2) n - where n is 0-9), or phenyl-(CH2) n - where n is 0-4.
  • R2 When R2 is referred to as being an amine, that includes the radical -NH2 and mono- or dialkylate derivatives of this -NH2 radical.
  • Preferred alkylated amines are the mono- or disubstituted amines having 1 to 6 carbons.
  • R2 When R2 is referred to as being an amide, that includes all acylate derivatives of the NH2 radical.
  • the preferred amides are those having 1 to 6 carbons. Where there is an acid group, amides may be formed.
  • the most preferred amides are those where -R ⁇ is hydrogen or alkyl of 1 to 6 carbon atoms. Particularly preferred is the diethylamide or dimethylamide.
  • salts of the instant compounds are intended to be covered by this invention. These salts will be ones which are acceptable in their application to a pharmaceutical use. By that it is meant that the salt will retain the biological activity of the parent compound and the salt will not have untoward or deleterious effects in its application and use in treating diseases.
  • compositions are prepared in a standard manner, in a suitable solvent.
  • the parent compound in a suitable solvent is reacted with an excess of an organic or inorganic acid, in the case of acid addition salts, or an excess of organic or inorganic base in the case where R4 is OH.
  • N-oxides may also be prepared by means of selected oxidizing agents. These oxides are useful as intermediates in preparing the compounds of fo ⁇ nula I and have useful pharmaceutical activity in and of themselves. Hence one can administer the N- oxides of formula I to a subject who is susceptible to or is suffering from a disease related to or caused by LTB4 or similar leukotrienes.
  • a chiral center is created or another form of an isomeric center is created in a compound of this invention, all forms of such isomer(s) are intended to be covered herein.
  • These compounds may be used as a racemic mixture or the racemates may be separated and the individual enantiomer used alone.
  • Olefins may have the cis or trans configuration (E or Z); either are useful in the practice of this invention.
  • these compounds can be used in treating a variety of disease assoicated with or attributing their origin or affect to leukotrienes, particularly
  • these compounds can be used to treat allergic diseases such of a pulmonary and non-pulmonary nature.
  • these compounds will be useful in antigen-induced anaphylaxis; for treating asthma and allergic rhinitis; psoriasis, or irritable bowel disease; ocular diseases such as uveitis, and allergic conjunctivitis.
  • the preferred compounds are those where Z is O or S(O) ⁇ ; m is 0-3; n is 0-2; R is alkoxy of 8 to 15 carbon atoms or unsubstituted or substituted pheny-Cj to C Q- aliphatic-O-; and Ri is -(Cj to C5 a!iphatic)R4 or -(Ci to C 5 -aIiphatic)CH2ORs.
  • Another set of preferred compounds are the anilines, those where R2 is N(R7>2, particularly where R7 is hydrogen.
  • a third set of preferred compounds are those where both R2 and R3 are hydrogen.
  • the most preferred compounds are: l-fluoro-3-[2-thia-3-[2-(E-2-carboxyethenyl)-3-[4-(4-methoxyphenyl)butyloxy]- 6-pyridyl]propyl]benzene, lithium salt;
  • Synthesis There are several methods for preparing these compounds.
  • One generic process comprises preparing a 6-(halomethyl)pyridyl adduct and then condensing this fragment with the appropriate mercaptan or alcohol to make compounds where Z is sulfur or oxygen.
  • functional groups such as acid groups will be protected; any acid group may be derivatized in some manner to render it unreactive.
  • protecting groups may be removed to provide the parent functionality, e.g. an acid. Further modification of these reactive groups can then be carried out, such as forming a salt, an amide, an ester or the like.
  • Sulfonamides are prepared from the corresponding amines by literature methods.
  • Tetrazoles are prepared from the corresponding acid halide, e.g., the acid chloride, by literature methods.
  • Scheme I outlines a means for making a substituted phenylalkyl tail which is R.
  • the starting alcohol represented here as the 3-octyn-l-ol, is commercially available (Lancaster Synthesis). To migrate the triple bond to the w-carbon, KH and 1,3-
  • Protecting the alcohol is accomplished by forming a silyl ether illustrated here as the r-butyldiphenylsilyl ether. Other silyl ethers could be used.
  • the alcohol is dissolved in a polar solvent, for example dimethylformamide, and imidazole is added followed by the desired silane. All this is carried out under an inert atmosphere such as argon. Ambient temperature is acceptable for effecting the reaction.
  • Adding the phenyl group is done in a dry environment using an amine for a solvent and an inert atmosphere.
  • a solvent such as triethylamine under argon is added the silylether followed by a halophenyl compound, eg. iodoanisole, a palladium catalyst (P 3P)2PdCl and Cul, both of the latter in catalytic amounts.
  • Heat is used to effect the reaction, usually a temperature of up to about 50°C will be sufficient. 25 Two or more hours, up to six but often about four at the elevated temperature will usually cause the reaction to go to completion.
  • the triple bond is then saturated, preferably by catalytic hydrogenation.
  • the silyl ether can be dissolved in a saturated solvent such as an alcohol, a heavy metal catalyst added (Pd-C) and the mixture put under H2 for a time sufficient to reduce the triple bond. Stirring for 2 to 6 hours will usually effect the reaction.
  • Recovering the alcohol is done by treating the silyl ether with a fluoride source such as tetrabutylammonium fluoride. Reactants are combined at a mildly reduced temperature, eg.0°C, then the reaction is allowed to run its course at ambient temperature or there about Several hours may be needed for the reaction to go to completion. Product was recovered by extraction means.
  • a fluoride source such as tetrabutylammonium fluoride
  • Converting the alcohol to the iodo compound is accomplished using a phosphine, imidazole and I2.
  • this transformation is accomplished by adding to a solution of alcohol under argon, a molar excess of triphenylphosphine, for example, and a three-fold excess of imidazole followed by iodine. Materials are combined at room temperature, but then the reaction pot may be heated to between 50 - 70°C for a brief period, 10 minutes to an hour to complete the reaction. Standard procedures are then used to recover and purify the product.
  • Scheme II illustrates an alternative process for making R groups.
  • an alkylsilazide is added to an inert solvent under an inert atmosphere.
  • the phosphonium salt is added. This addition can be done at room temperature or thereabouts. After a brief period of mixing, this mixture is usually a suspension, the benzaldehyde is added slowly at about room temperature. A slight molar excess of the phosphonium salt is employed After an additional brief period of stirring at about room temperature, the reaction is quenched with water.
  • the solution is acidified and the acid extracted with a suitable organic solvent Further separatory and purification procedures may be employed as desired.
  • the alcohol is made by reducing the acid using a reducing agent. Lithium aluminum hydride or similar reducing agents may be employed, and conditions may be varied as needed to effect the reduction.
  • the tosylate is prepared in an inert solvent employing a base such as pyridine. Suitable conditions include carrying out the reaction at room temperature or thereabouts for a period of 1 to 5 hours. Other leaving groups similar in function to the tosylate may be prepared and will be useful as a means for forming the R moiety.
  • R alkyl
  • haloalkylbenzoates are commercially available or can be made by methods known in the art.
  • Thiourea is added to a solution of haloalkylbenzoate at ambient temperature or thereabouts. Any appropriate solvent may be used, acetone for example.
  • a precipitate of the thiouronium salts should form under these conditions.
  • the precipitate is collected and dissolved in water and the pH adjusted to about 10.5 with a base, for example a solution of NaOH. Refluxing is then commenced for between 1 and 4 hours.
  • Product, as the free acid is then recovered by some other separatory and purification means. Esterification is then carried out by mixing the acid with an alcohol, bubbling HC1 through the solution, and letting sit the resulting solution for a time not more than several days; two days usually is sufficient to effect the reaction.
  • the starting material is available from Aldrich. It is treated with a mild oxidizing agent such as MnC-2 to oxidize the 2-hydroxyethyl group to the corresponding -aldehyde.
  • the R group is then formed.
  • an ether is prepared under basic conditions using an a-halo intermediate.
  • a tosylate made as per Scheme HI, can also be used in this step.
  • Introducing the acid function at position 2 is accomplished by means of a triphenylphosphoranylidene reagent. The acetate form is illustrated here but other similar reagents could be used.
  • the N-oxide is then formed by means of a peroxy acid. Trifluoroacetic anhydride is used to oxidize the 6-position methyl group.
  • This hydroxymethyl group is then converted to the corresponding halide, (in the hydrohal ⁇ de form) in this case the chloride, by means of thionyl chloride.
  • An alkyl hydroxybenzoate is then reacted with the 6-chloromethyl compound in the presence of tetrabutylammonium iodide and a weak base.
  • the resulting diester can be hydrolyzed to the salt or, further, acidified to give the free acid.
  • An oxidant can be used to regenerate the N-oxide which can then be treated with base to hydrolyze the esters.
  • Esters can be converted to salts, the free acids and other derivatives.
  • Catalytic hydrogenation can be used to reduce the double bond in the Ri group described here.
  • Scheme V illustrates a method for making compounds where Z is a S and m is 0.
  • the starting hydrochloride is described in Scheme IV. Instead of treating the hydrochloride with an alcohol, in this instance the mercapto analog of the hydroxybenzoate described above is used.
  • the resulting thioether can be hydrolyzed to give the salt or treated further to give the free acid from which other derivatives of the carboxyl function can be prepared, including alcohols and aldehydes.
  • the double bond in the Ri group can be reduced by catalytic means using a heavy metal catalyst and hydrogen.
  • the sulfone and sulfoxide can be prepared by treating the thioether with an oxidizing agent A peroxy acid or other oxidizing agent can be used.
  • 2-hydroxypicolinic acid is converted to the alkyl ester using the corresponding alcohol and an acid to catalyze the reaction.
  • the hydroxyl group is then converted to the triflu ⁇ romethy sulfonate by means of trifluoromethanesulfonic anhydride - and a base, e.g. pyridine.
  • the lipid tail is attached using the appropriate alkyl catechol boronateunderpalladium coupling conditions. For example, 1-iododecene and catechol borane are reacted to form the alkyl catechol boronate.
  • alkylation reaction is effected using Pd(OAc)2-
  • the ester is reduced to the corresponding aldehyde with a hydride such as d ⁇ sobutylaluminum hydride (DIBAL).
  • DIBAL d ⁇ sobutylaluminum hydride
  • a Wittig olef ⁇ nation is then carried out using, for example, methyl(triphenylphosphoranyUdene)acetate.
  • the resulting pyridyl methyl acrylate is then oxidized to the N-oxide with an oxidizing agent such as 3-chloroperoxybenzoic acid. This oxide is then rearranged to the 2-pyridone with trifluoroacetic anhydride.
  • a trifluoromethylsulfonate is then formed using trifluoromethanesulfonic anhydride and pyridine. Carbomethylation is then effected by means of Pd(OAc)2, a simple alcohol, and carbon monoxide. Selectively reducing the pyridyl-ester (using a hydride such as NaBH4 in a low molecular weight alcohol) yields the 2-(hydroxymethyl)-pyridine. This compound is treated with thionyl chloride to form the 6-chloromethyl compound. This intermediate is transformed to the ethers or thioether of formula I in the same manner as is illustrated in Schemes IV - VI.
  • compositions of the present invention comprise a pharmaceutical carrier or diluent and some amount of a compound of the formula (I).
  • the compound may be present in an amount to effect a physiological response, or it may be present in a lesser amount such that the user will need to take two or more units of the compositon to effect the treatment intended.
  • These compositions may be made up as a solid, liquid or in a gaseous form. Or one of these three forms may be transformed to another at the time of being administered such as when a solid is delivered by aerosol means, or when a liquid is delivered as a spray or aerosol.
  • compositions and the pharmaceutical carrier or diluent will, of course, depend upon the intended route of administration, for example parenterally, topically, orally or by inhalation.
  • the pharmaceutical composition will be in the form of a sterile injectable liquid such as an ampule or an aqueous or non-aqueous liquid suspension.
  • the pharmaceutical composition will be in the form of a cream, ointment, liniment, lotion, pastes, and drops suitable for administration to the eye, ear, or nose.
  • the pharmaceutical composition will be in the form of a tablet, capsule, powder, pellet, atroche, lozenge, syrup, liquid, or emulsion.
  • examples of appropriate pharmaceutical carriers or diluents include: for aqueous systems, water; for non-aqueous systems, ethanol, glycerin, propylene glycol, com oil, cottonseed oil, peanut oil, sesame oil, liquid parafins and mixtures thereof with water; for solid systems, lactose, kaolin and mannitol; and for aerosol systems, dichlorodifluoromethane, chlorotrifluoroethane and compressed carbon dioxide.
  • the instant compositions may include other ingredients such as stabilizers, antioxidants, preservatives, lubricants, suspending agents, viscosity modifiers and the like, provided that the additional ingredients do not have a detrimental effect on the therapeutic action of the instant compositions.
  • the pharmaceutical preparations thus described are made following the conventional techniques of the pharmaceutical chemist as appropriate to the desired end product.
  • Formulations for treating psoriasis can take the form of oral or topical preparations. Topically applied formulations are preferred. Ointments, creams, liniments, lotions, pastes and similar preparations are examples of preferred topical formulations. Aerosols may also be used. These dosage forms will contain between 0.01 and 5 percent by weight of the active ingredient
  • a compound of formula I is administered, that is applied, to a subject in a composition comprising a nontoxic amount sufficient to produce an inhibition of the symptoms of a disease state.
  • the dosage of the composition is selected from the range of from 50 mg to 1000 mg of active ingredient for each administration.
  • equal doses will be administered 1 to 5 times daily with the daily dosage regimen being selected from about 50 mg to about 5000 mg.
  • the amount applied will depend on the size of the affected area and the severity and progress of the disease, ie. psoriasis.
  • a disease mediated by LTB4 which comprises administering to a subject a therapeutically effective amount of a compound of formula I, preferably in the form of a pharmaceutical composition.
  • a therapeutically effective amount of a compound of formula I preferably in the form of a pharmaceutical composition.
  • inhibiting the inflammatory response resulting from psoriasis by administration of an effective amount of a compound of formula I is included within the scope of this disclosure.
  • the administration may be carried out in dosage units at suitable intervals or in single doses as needed. Usually this method will be practiced when relief of symptoms is specifically required.
  • the method is also usefully carried out as continuous or prophylactic treatment It is within the skill of the art to determine by routine experimentation the effective dosage to be administered from the dose range set forth above, taking into consideration such factors as the degree of severity of the condition or disease being treated, and so forth.
  • compositions and their method of use also include the combination of a compound of formula I with Hi Mockers where the combination contains sufficient amounts of both compounds to treat antigen-induced respiratory anaphylaxis or similar allergic reaction.
  • Hi blockers useful here include: cromolyn sodium, compounds from the ethanolamines class (diphenhydramine), ethylenediamines (pyrilamine), the alkylamine class (chlorpheniramine), the piperazine class (chlorcyclizine), and the phenothiazine class (promethazine).
  • Hi blockers such as 2-[4-(5-bromo-3-methylpyrid-2-yl)butylamino]-5-[(6-methylpyrid-3-yl)methyl]-4- pyrimidone are particularly useful in this invention.
  • the specificity of the antagonist activity of a number of the compounds of this invention is demonstrated by relatively low levels of antagonism toward agonists such as potassium chloride, carbachol, histamine and PGF2.
  • the receptor binding affinity of the compounds used in the method of this invention is measured by the ability of the compounds to bind to [3_H]-LTB4 binding sites on human U937 cell membranes.
  • the LTB4 antagonist activity of the compounds used in the method of this invention is measured by their ability to antagonize in a dose dependent manner the LTB4 elicited calcium transient measured with fura-2, the fluorescent calcium probe. The methods employed were as follows: U-937 Cell Culture Conditions
  • U-937 cells were obtained from Dr. John Bomalaski (Medical College of PA) and Dr. John Lee (SmithKline Beecham Corp., Dept of Immunology) and grown in RPMI- 1640 medium supplemented with 10% (v/v) heat inactivated fetal calf serum, in a humidified environment of 5% CO2, 95% air at 37°C. Cells were grown both in T-flasks and in Spinner culture. For differentiation of the U937 cells with DMSO to macrophage- like cells, the cells were seeded at a concentration of 1 x l(fi cells/ml in the above medium with 1.3% DMSO and the incubation continued for 4 days. The cells were generally at a density of 0.75-1.25 x 10 ⁇ cells/ml and were harvested by centrifugation at 800 x g for 10 min.
  • [ 3 H]-LTB4 binding assays were performed at 25°C, in 50 mM Tris-HCl (pH 7.5) buffer containing 10 mM CaCl2, 10 mM MgCl2, [ 3 H]-LTB4, U937 cell membrane protein (standard conditions) in the presence or absence of varying concentrations of LTB4, or test compounds. Each experimental point represents the means of triplicate determinations. Total and non-specific binding of [ 3 H]-LTB4 were determined in the absence or presence of 2 mM of unlabeled LTB4, respectively. Specific binding was calculated as the difference between total and nonspecific binding.
  • the radioligand competition experiments were performed, under standard conditions, using approximately 0.2 nM [ 3 H]-LTB4, 20-40 mg of U937 cell membrane protein, increasing concentrations of LTB4 (0.1 mM to 10 mM) or other competing ligands (0.1 mM to 30 mM) in a reaction volume of 0.2 ml and incubated for 30 minutes at 25°C.
  • the unbound radioligand and competing drugs were separated from the membrane bound ligand by a vacuum filtration technique.
  • the membrane bound radioactivity on the filters was determined by liquid scintillation spectrometry.
  • the cells were centrifuged at 800 x g for 10 minutes and resuspended in cold fresh buffer B at 5 x i cells/ml. Cells were maintained on ice in the dark until used for fluorescent measurements. Fluorescent Measurements - Calcium Mobilization
  • the fluorescence of fura-2-containing U937 cells was measured with a fluorometer designed by the Johnson Foundation Biomedical Instrumentation Group.
  • a fluorometer was equipped with temperature control and a magnetic stirrer under the cuvette holder.
  • the wave lengths are set at 339 nm for excitation and 499 nm for emission. All experiments were performed at 37°C with constant mixing.
  • U-937 cells were diluted with fresh buffer (B) to a concentration of 1 x 10 ⁇ cells/ml and maintained in the dark on ice. Aliquots (2 ml) of the cell suspension were put into 4 ml cuvettes and the temperature brought up to 37°C, (maintained in 37°C, water bath for 10 min). Cuvettes were transferred to the fluorometer and fluorescence measured for about one minute before addition of stimulants or antagonists and followed for about 2 minutes post stimulus. Agonists and antagonists were added as 2 ml aliquots. Antagonists were added first to the cells in the fluorometer in order to detect potential agonist activity. Then after about one minute 10 nM LTB4 (a near maximal effective concentration) was added and the maximal Ca ⁇ + mobilization [Ca- ⁇ +j was calculated using the following formula:
  • F was the maximum relative fluorescence measurement of the sample. Fmax was determined by lysing the cells with 10 ml of 10% Triton X-100 (final Concentration 0.02%). After Fmax was determined 67 ml of 100 mM EDTA solution (pH 10) was added to totally chelate the Ca ⁇ + and quench the fura-2 signal and obtain the Fmin.
  • the [Ca2 + j " i level for 10 nM LTB4 in the absence of an antagonist was 100% and basal [Ca2 + ] j was 0%.
  • the IC50 concentration is the concentration of antagonist which blocks 50% of the lOnM LTB4 induced [Ca 2+ ]j mobilization.
  • the EC50 for LTB4 induced increase in [Ca 2 "* " ] j mobilization was the concentration for half maximal increase.
  • the Ki for calcium mobilization was determined using the formula:
  • the LTB4 concentration was 10 nM and the EC50 was 2 nM.
  • 6-(4-Methoxyphenyl)hexan-l-f-butyldiphenylsilyl ether (2.0g, 4.6mmol) in tetrahydrofuran (20mL) was cooled to 0 ⁇ C and treated with tetrabutylammonium fluoride (14mL, 14mmol, 1M in tetrahydrofuran). The cooling bath was removed and the reaction was stirred at room temperature for 24 hours. The reaction was diluted with ethyl acetate and was washed with H2O and brine and dried (Na2S ⁇ 4).
  • 3-Hydroxy-6-methyl-2-pyridine carboxaldehye obtained above was dissolved in dry dimethylfo ⁇ namide (lOmL) and treated with 1-iodododecane (2. lmL, 8.62mmol) and anhydrous K2CO3 (3.0g, 21.7mmol) under an argon atmosphere.
  • the reaction was heated at 90° C for lh with vigorous stirring.
  • the reaction mixture was poured into ethyl acetate (lOOmL); the ethyl acetate solution was washed with H2O (3X20mL) and brine and dried (MgS ⁇ 4).
  • reaction solution was slowly added to a cooled (0 C) saturated aqueous Na2C ⁇ 3 solution (lOOmL).
  • the aqueous solution was extracted with ethyl acetate (2X50mL) and the combined ethyl acetate extracts were washed with H2O (2X20mL) and brine and dried (MgSO4); the solvent was removed in vacuo.
  • the product mixture was dissolved in methanol (20mL), treated with anhydrous K2CO3 (500mg), and vigorously stirred for 20 minutes.
  • the reaction was diluted with ethyl acetate (75mL) and washed with H2O (30mL).
  • Methyl 3-[l-oxa-2-[2-(E-2-carboxymethylethenyl)-3- dodecyloxy-6-pyridyl]ethyl]benzoate 130mg, 0.254mmol was dissolved in dry CH2CI2 (1.5mL), cooled to 0 «C, and treated with 85% m-chloroperoxybenzoic acid
  • 3-Aminophenol f ⁇ utylcarbamate 3-Aminophenol (2.0g, 18.3mmol; Aldrich) was dissolved in CH2CI2 (18mL) and DMF (6mL) and treated with d butyl dicarbonate (5.0mL, 21.7mmol). The reaction was stirred under an argon atmosphere for 18 hours. The reaction solution was diluted with EtOAc and washed with H 2 O and brine and dried (MgSO 4 ).
  • Example 17 Preparation of 3-rN-r2-r2-(E-2-CarboxyethenvI)-3-(8-(4-methoxyphenyl)octyloxy)-6- pyridvHmethvHlaminobenzoic acid, dilithium salt
  • the captioned compound was prepared according to the method set out in Scheme 5 above by reacting the appropriate r-BOC-protected aminobenzoic acid with 2-Q ⁇ -2- carboxymethyIethenyl)-3-dodecyloxy-6-(chloromethyl)-pyridine hydrochloride or a similar intermediate, the captioned compound was prepared.
  • Methyl 4-r2-oxythia-3-r2-(E-2-carboxymethylethenyl)-3-r8-(4- • mefl ⁇ oxyphenyl)octyloxy1-6-pyridyllpropynbenzoate Methyl 4-[2-thia-3-[2-(E-2- carix)xymethylethenyl)-3-[8-(4-methoxyphenyl)octyloxy]-6-pyridyl]propyl]benzoate (HOmg, 0.186mmol) was dissolved in dry CH2CI2 (4mL) under an argon atmosphere and cooled to -20°C.
  • the thiouronium salt was dissolved in H2O (65mL) and the pH was adjusted to 10.5 by the addition of 10% NaOH. The mixture was refluxed for 2 hours. After cooling to room temperature the solution was extracted with EtOAc and the organic layer was discarded. The aqueous solution was acidified to pH 1.5 and extracted three times with EtOAc. The organic extracts were dried (MgSO4), filtered and the solvent evaporated. The crude acid was then dissolved in anhydrous MeOH (125mL), cooled to 0°C, and dry HCl gas was 5 bubbled through the solution for 30 minutes. The reaction was then left for two days at room temperature.
  • reaction was heated at 60°C under an atmosphere of argon for 1.5 hours. Upon cooling to room temperature the reaction was diluted with EtOAc and washed with H20, 10-% NaOH, H2O, and brine and dried (MgSO4).
  • This reaction can also be used to make other sulfoxides and sulfones of this inventions including 3-[2-dioxythia-[2-(E-2-carboxyethenyl)-3- [4-(4- methoxyphenyl)butyloxy]-6-pyridyl]propyl]benzoic acid, dilithium salt, and 3-[2- oxythia-[2-(E-2-carboxyethenyl)-3-[4-(4-methoxyphenyl)butyloxy]-6- pyridyl]propyl]benzoic acid, dilithium salt.
  • Example 22 3-r2-Thia-3-r2-(2-carboxyethanyl)-3-r8-(4-methoxyDhenyl)octvIoxy1-6- pyridynpropyn benzoic acid, dilithium salt 22(a).
  • Example 24 4-r2-Oxythia-3-r2-(E-2-carboxyethenyl)-3-r8-(4-metho ⁇ yphenyl)octyloxyl-6- pyridvnpropyllphenylacetic acid, dilithium salt 24(a). Methyl 4-r2-oxythia-3-r2-(E-2-carboxymethylethenyl)-3-r8-(4- methoxyphenyl)octyloxy1-6-pyridvnpropynphenylacetate.
  • the resulting acid chloride was dissolved in dry CH2CI2 (5mL), cooled to 0 °C, and treated with triethylamine (52mL, 0.37mmol). Diethylamine was then introduced into the reaction via a cooling finger; reaction was stirred for 15 minutes.
  • This tetrazole is prepared via the acid chloride described above according to Duncia, Pierce, and Santella, /. Org. Chem., 1991, 56, 2395-2400.
  • Example 27 Formulations for pharmaceutical use incorporating compounds of the present invention can be prepared in various forms and with numerous excipients. Means for making various formulations can be found in standard texts such as Remington's Pharmaceutical Sciences, and similar publications and compendia. Specific examples of formulations are given below.
  • Step 1 Blend ingredients No. 1, No. 2, No. 3 and No. 4 in a suitable mixer/blender.
  • Step 2 Add sufficient water portionwise to the blend from Step 1 with careful mixing after each addition. Such additions of water and mixing until the mass is of a consistency to permit its conversion to wet granules.
  • Step 3 The wet mass is converted to granules by passing it through an oscillating granulator using a No. 8 mesh (2.38 mm) screen.
  • Step 4 The wet granules are then dried in an oven at 410°F (60°C) until dry. Step 5.
  • the dry granules are lubricated with ingredient No. 5.
  • Step 6 The lubricated granules are compressed on a suitable tablet press.
  • Step 1 Melt ingredient No. 2 and No. 3 together and stir until uniform.
  • Step 2. Dissolve ingredient No. 1 in the molten mass from Step 1 and stir until uniform.
  • Step 3. Pour the molten mass from Step 2 into supository moulds and chill.
  • Step 4. Remove the suppositories from moulds and wrap.
  • Example 28 Inhalation Formulation A compound of formula 1, 1 to 10 mg ml, is dissolved in isotonic saUne and aerosoUzed from a nebuUzer operating at an air flow adjusted to deliver the desired amount of drug per use.
  • Formulations for pharmaceutical use incorporating compounds of the present invention can be prepared in various forms and with numerous excipients. Means for making various formulations can be found in standard texts such as Remington's Pharmaceutical Sciences, and similar publications and compendia. Specific examples of formulations are given below.
  • the stearyl alcohol, white wax and white petrolatum are melted together (steam bath for example) and cholesterol and the active ingredient are added. Stirring is commenced and continued until the solids disappear. The source of heat is removed and the mix allowed to congeal and packaged in metal or plastic tubes.
  • the stearyl alcohol and white petrolatum are combined over heat. Other ingredients are dissolved in water, then this solution is added to the warm (ca 50 to 100°C) alcohol/petrolatum mixture and stirred until the mixture congeals. It can then be packed in tubes or another appropriate package form.

Abstract

L'invention se rapporte aux composés de la formule (I) utilisés comme antagonistes des leucotriènes.The invention relates to the compounds of formula (I) used as leukotriene antagonists.

Description

PYRIDINE COMPOUNDS FOR TREATING LEUKOTRIENE-RELATED DISEASES.
Scope of the Invention This invention relates to certain compounds containing a substituted pyridyl group linked to a substituted phenyl group by an alkyl or heteroatom-containing tether and their use for treating diseases arising from or related to leukotrienes, particularly leukotriene B4. As such their utility lies in antagonizing the effects of leukotrienes.
Background of the Invention The family of bioactive lipids known as the leukotrienes exeπ pharmacological effects on respiratory, cardiovascular, and gastrointestinal systems. The leukotrienes are generally divided into two sub-classes, the peptidoleukotrienes (leukotrienes C4, D4 and E4) and the dihydroxyleukotrienes (leukotriene B4). This invention is primarily concerned with the hydroxyleukotrienes (LTB) but is not limited to this specific group of leukotrienes.
Leukotrienes are critically involved in mediating many types of cardiovascular, pulmonary, dermatological, renal, allergic, and inflammatory diseases including asthma, adult respiratory distress syndrome, cystic fibrosis, psoriasis, and inflammatory bowel disease.
LTB4 has been established as an inflammatory mediator in vivo. It has also been associated with airway hyper-responsiveness in the dog as well as being found in increased levels in lung lavages from humans with severe pulmonary dysfunction.
By antagonizing the effects of LTB4, or other pharmacologically active mediators at the end organ, for example airway smooth muscle, the compounds and pharmaceutical compositions of the present invention are valuable in the treatment of diseases in subjects, including human or animals, in which leukotrienes are a factor.
Summary of the Invention This invention relates to novel benzylsulfides of formula 1
or an N-oxide, or a pharmaceutically acceptable salt where Z is O, NH, NCH3 or S(O)q where q is 0, 1 or 2, m is 0 - 5; R is Ci to C20-aliphatic, unsubstituted or substituted phenyl Cj to Cχo-aliphatic where substituted phenyl has one or more radicals selected from the group consisting of lower alkoxy, lower alkyl, trihalomethyl, and halo, or R is Cj to C20-aliphatic-O-, or R is unsubstituted or substituted phenyl C to Cjo-aliphatic-O- where substituted phenyl has one or more radicals selected from the group consisting of lower alkoxy, lower alkyl, trihalomethyl, and halo
Rl is -(Ci to C5 aliphatic)R4, -(Ci to C5 aliphatic)CHOf -(Ci to C5 aliphatic)CH20R8, -R4, -CH2OH, or CHO;
R2 is H, halo, lower alkyl, lower alkoxy, -CN, -(CH^nR^ -CH(NH2)(R4), or -(CH2)nR9 where n is 0 - 5 and where R9 is -N(R7)2 where each R7 is independently H, or an aliphatic group of 1 to 10 carbon atoms, or acyl of 1-6 carbon atoms, or a cycloalkyl-(CH2)n- group of 4 to 10 carbons where n is 0-3, or both R7 groups form a ring having 4 to 6 carbons; or
R3 is hydrogen, lower alkyl, lower alkoxy, halo, -CN, R4, NHCONH2, or OH; each R4 group is independently -COR5 where R5 is -OH, a pharmaceutically acceptable ester-forming group -OR^, or -OX where X is a pharmaceutically acceptable cation, or R5 is -N(R7)2 where each R7 is independently H, or an aliphatic group of 1 to 10 carbon atoms, or a cycloalkyl-(CH2)n- group of 4 to 10 carbons where n is 0-3, or both R7 groups form a ring having 4 to 6 carbons, or R4 is a sulfonamide, or an amide, or tetrazol-5-yl; and
R8 is hydrogen, Ci to Cζ alkyl, or Ci to Cό-acyl, exlcuding those compounds where R2 and R3 are other than hydrogen and are substituted in the 2 and 6 positions.
In another aspect, this invention covers pharmaceutical compositions containing the instant compounds and a pharmaceutically acceptable excipient
Treatment of diseases related to or caused by leukotrienes, particularly LTB4, or related pharmacologically active mediators at the end organ are within the scope of this invention. This treatment can be effected by administering one or more of the compounds of formula I alone or in combination with a pharmaceutically acceptable excipient.
Processes for making these compounds are also included in the scope of this invention, which processes comprise: a) forming a salt, or b) hydrolyzing an ester to give a salt or acid; c) forming an ester, d) forming an amide; e) oxidizing a thio ether, f) forming a compound of formula I by treating a 6- halomethylpyridyl compound with tha appropriate mercaptobenzoate or hydroxybenzoate.
DETAILED DESCRIPΗON OF THE INVENTION
The following definitions are used in describing this invention and setting out what the inventors believe to be their invention herein.
"Aliphatic" is intended to include saturated and unsaturated radicals. This includes normal and branched chains, saturated or mono or poly unsaturated chains where both double and triple bonds may be present in any combination. The phrase "lower alkyl" means an alkyl group of 1 to 6 carbon atoms in any isomeric form, but particularly the normal or linear form. "Lower alkoxy" means the group lower alkyl-O-. "Halo" means fluoro, chloro, bromo or iodo. "Acyl" means the radical having a terminal carbonyl carbon. When reference is made to a substituted phenyl ring, it is meant that the ring can be substituted with one or more of the named substituents as may be compatible with chemical synthesis. Multiple substituents may be the same or different, such as where there are three chloro groups, or a combination of chloro and alkyl groups and further where this latter combination may have different alkyl radicals in the chloro/alkyl substituent pattern.
The phrase "a pharmaceutically acceptable ester-forming group" in R2 and R3 covers all esters which can be made from the acid function(s) which may be present in these compounds. The resultant esters will be ones which are acceptable in its application to a pharmaceutical use. By that it is meant that the mono or diesters will retain the biological activity of the parent compound and will not have an untoward or deleterious effect in their application and use in treating diseases. Such esters are, for example, those formed with one of the following radicals: Ci to C6 alkyl, phenyl Ci-C6alkyl, cycloalkyl, aryl, arylalkyl, alkylaryl, alkylarylalkyl, aminoalkyl, indanyl, pivaloyloxymethyl, acetoxymethyl, propionyloxymethyl, glycyloxymethyl, phenylglycyloxymethyl, or thienylglycyloxymethyl. The most preferred ester-forming radicals are those where R3 is alkyl, particularly alkyl of 1 to 10 carbons, (ie CH3- (CH2)n- where n is 0-9), or phenyl-(CH2)n- where n is 0-4.
When R2 is referred to as being an amine, that includes the radical -NH2 and mono- or dialkylate derivatives of this -NH2 radical. Preferred alkylated amines are the mono- or disubstituted amines having 1 to 6 carbons. When R2 is referred to as being an amide, that includes all acylate derivatives of the NH2 radical. The preferred amides are those having 1 to 6 carbons. Where there is an acid group, amides may be formed. The most preferred amides are those where -R^ is hydrogen or alkyl of 1 to 6 carbon atoms. Particularly preferred is the diethylamide or dimethylamide.
Pharmaceutically acceptable salts of the instant compounds are intended to be covered by this invention. These salts will be ones which are acceptable in their application to a pharmaceutical use. By that it is meant that the salt will retain the biological activity of the parent compound and the salt will not have untoward or deleterious effects in its application and use in treating diseases.
Pharmaceutically acceptable salts are prepared in a standard manner, in a suitable solvent. The parent compound in a suitable solvent is reacted with an excess of an organic or inorganic acid, in the case of acid addition salts, or an excess of organic or inorganic base in the case where R4 is OH.
N-oxides may also be prepared by means of selected oxidizing agents. These oxides are useful as intermediates in preparing the compounds of foπnula I and have useful pharmaceutical activity in and of themselves. Hence one can administer the N- oxides of formula I to a subject who is susceptible to or is suffering from a disease related to or caused by LTB4 or similar leukotrienes.
If by some combination of substituents, a chiral center is created or another form of an isomeric center is created in a compound of this invention, all forms of such isomer(s) are intended to be covered herein. These compounds may be used as a racemic mixture or the racemates may be separated and the individual enantiomer used alone. Olefins may have the cis or trans configuration (E or Z); either are useful in the practice of this invention.
As leukotriene antagonists, these compounds can be used in treating a variety of disease assoicated with or attributing their origin or affect to leukotrienes, particularly
LTB4. Thus it is expected that these compounds can be used to treat allergic diseases such of a pulmonary and non-pulmonary nature. For example these compounds will be useful in antigen-induced anaphylaxis; for treating asthma and allergic rhinitis; psoriasis, or irritable bowel disease; ocular diseases such as uveitis, and allergic conjunctivitis. The preferred compounds are those where Z is O or S(O)π; m is 0-3; n is 0-2; R is alkoxy of 8 to 15 carbon atoms or unsubstituted or substituted pheny-Cj to C Q- aliphatic-O-; and Ri is -(Cj to C5 a!iphatic)R4 or -(Ci to C5-aIiphatic)CH2ORs. The more preferred compounds of this invention are those where Ri is R4CH=CH- and R2 is -COR5 or -NHSO2CF3. Another set of preferred compounds are the anilines, those where R2 is N(R7>2, particularly where R7 is hydrogen. A third set of preferred compounds are those where both R2 and R3 are hydrogen. The most preferred compounds are: l-fluoro-3-[2-thia-3-[2-(E-2-carboxyethenyl)-3-[4-(4-methoxyphenyl)butyloxy]- 6-pyridyl]propyl]benzene, lithium salt;
3- [2-thia-3- [2-(E-2-carboxyethenyl)-3- [4- (4-methoxyphenyl)buty loxy] -6- pyridyl]propyl]benzene, lithium salt;
3-[2-thia-3-[2-(2-carboxyethanyl)-3-[4-(4-methoxyphenyl)butyloxy]-6- pyridyl]propyl]benzene, lithium salt;
2-[2-thia-3-[2-(2-carboxyethenyl)-3-[4-(4-methoxyphenyl)butyloxy]-6- pyridyl]ethyl]benzene, lithium salt; l-fluoro-4-[2-thia-3-[2-(2-carboxyethanyl)-3-[4-(4-methoxyphenyl)butyloxy]-6- pyridyl]propyl]benzene, lithium salt; l-fluoro-4-[2-thia-3-[2-(E-2-carboxyethenyl)-3-[4-(4-methoxyphenyl)butyloxy]- 6-pyridyl]propyl]benzene, lithium salt;;
3-[l-thia-2-[2-(E-2-carboxyethenyl)-3-[8-(4-methoxyphenyl)octyloxy]-6- pyridyljethyl] benzoic acid,
3-[l-oxythia-2-[2-(E-2-carboxyethenyl)-3-[8-(4-methoxyphenyl)octyloxy]-6- pyridyljethyl] benzoic acid,
3-[l-thia-2-[2-(E-2-carboxyethenyl)-3-dodecyloxy-6-pyridyl]ethyl]benzoic acid,
3-[l-oxythia-2-[2-(E-2-carboxyethenyl)-3-dodecyloxy-6-pyridyl]ethyl]benzoic acid,
3-[l-dioxythia-2-[2-(E-2-carboxyethenyl)-3-dodecyloxy-6-pyridyl]ethyl]benzoic acid,
2-[l-oxythia-2-[2-(E-2-carboxyethenyl)-3-dodecyloxy-6-pyridyl]ethyl]benzoic acid, lithium salt N-[3-[l-thia-2-[2-(E-2-carboxyethenyl)-3-dodecyloxy-6-pyridyl]ethyl]- phenyl]trifluoromethanesulfonamide,
N-[3-[l-thia-2-[2-(E-2-carboxyethenyl)-3-(8-(4-methoxyphenyl)octyloxy)-6- pyridyl]ethyl]phenyl]trifluoromethanesulfonamide,
N-[3-[l-oxythia-2-[2-(E-2-carboxyethenyl)-3-(8-(4-methoxyphenyl)octyloxy)-6- pyridyl]ethyl]phenyl]-trifluoromethanesulfonamide,
N-[3-[l-oxythia-2-[2-(E-2-carboxyethenyl)-3-(8-(4-methoxyphenyl)octyloxy)-6- pyridyl]ethyl]phenyl]-phenylsulfonamide,
N-[3-[l-thia-2-[2-(E-2-carboxyethenyl)-3-(8-(4-methoxyphenyl)octyloxy)-6- pyridyl]ethyl]-phenyl]phenylsulfonamide, 3-[l-oxa-2-[2-(E-2-carboxyethenyl)-3-dodecyloxy-6-pyridyl]ethyl] benzoic acid,
3-[l-oxa-2-[2-(E-2-carboxyethenyl)-3-[8-(4-methoxyphenyl)octyloxy]-6- pyridyl]ethyl]benzoic acid, 3-[l-oxa-2-[2- E-2-carboxyethenyl)-3-[8-(4-methoxyphenyl)octan- 1 -yl]-6- pyridyl]ethyl]benzoic acid,
4-[2-thia-3-[2-(E-2-carboxyethenyl)-3-[8-(4-methoxyphenyl)octyloxy]-6- pyridyl]propyl]benzoic acid, 4-[2-thia-3-[2-(E-2-carboxyethenyl)-3-[4-(4-methoxyphenyl)butyloxy]-6- pyridyl]propyl]benzoic acid,
3-[2-thia-3-[2-φ-2-carboxyethenyl)-3-[8-(4-methoxyphenyl)octyloxy]-6- pyridyl]propyl]benzoic acid,
3-[2-thia-3-[2-(E-2-carboxyethenyl)-3-[4-(4-methoxyphenyl)butyloxy]-6- pyridyl]propyl]benzoic acid,
3-[2-thia-3-[2-(2-carboxyethanyl)-3-[8-(4-methoxyphenyl)octyloxy]-6- pyridyl]propyl]benzoic acid,
3-[2-thia-3-[2-(E-2-carboxyethenyl)-3-(8-(4-methoxyphenyl)octyloxy)-6- pyridyl]propyl]-N,N,-dimethylbenzamide, lithium salt 3-[2-thia-3-[2-(E-2-carboxyethenyl)-3-(4-(4-methoxyphenyI)butyloxy)-6- pyridyl]propyl]-N,N-dimethyIbenzamide, lithium salt,
3-[2-thia-3-[2-(E-2-carboxyethenyl)-3-[4-ρhenylbutyloxy]-6- pyridyl]propyl]benzoic acid,
3-[2-thia-3-[2-(E-2-carboxyethenyl)-3-[8-ρhenyloctyloxy]-6- pyridyl]propyl]benzoic acid,
3-[2-thia-3-[2-(2-carboxyethanyl)-3-[4-(4-methoxyphenyl)butyloxy]-6- pyridyl]propyl]benzoic acid,
4-[2-thia-3-[2-(E-2-carboxyethenyl)-3-[8-(4-methoxyρhenyl)octyloxy]-6- pyridyl]propyl]phenylacetic acid, 4-[2-oxythia-3-[2-(E-2-carboxyethenyl)-3-[8-(4-methoxypIιenyl)octyloxy]-6- pyridyl]propyl]benzoic acid,
3-[2-oxythia-3-[2-(E-2-carboxyethenyl)-3-[8-(4-methoxyphenyl)octyloxy]-6- pyridyl]propyl]benzoϊc acid,
4-[2-oxythia-3-[2-(E-2-carboxyethenyl)-3-[8-(4-methoxyphenyl)octyloxy]-6- pyridyl]propyl]phenylacetic acid,
3-[2-dioxythia-3-[2-(E-2-carboxyethenyl)-3-[8-(4-methoxyphenyl)octyloxy]-6- pyridyl]propyl]benzoic acid,
5-[3-[2-thia-3-[2-(E-2-carboxyethenyl)-3-[8-(4-methoxyphenyl)octyloxy]-6- pyridyl]propyl]phenyl]tetrazole 3-[l-oxa-2-[2-(E-2-carboxyethenyl)-3-(8-(4-methoxyphenyl)octyloxy)-6-
' pyridyl]ethyl]aniline,
5-ca_t oxy-3-[l-oxa-2-[2-(E-2-carboxyethenyl)-3-(8-(4- methoxyphenyl)octyloxy)-6-pyridyl]ethyl]aniline, 3-[l-thia-2-[2-(E-2-carboxyethenyl)-3-(8-(4-methoxyphenyl)octyloxy)-6- pyridyl]ethyl]aniline,
3-[l-thia-2-[2-(E-2-carboxyethenyl)-3-(8-(4-trifluoromethylphenyl)octyloxy)-6- pyridyl]ethyl]aniline, 5 3-[l-oxythia-2-[2-(E-2-carboxyethenyl)-3-(8-(4-trifluoromethylphenyl)octyloxy)-
6-pyridyl]ethyl] aniline, lithium salt
3-[l-thia-2-[2-(E-2-carboxyethenyl)-3-(8-phenyloctyloxy)-6- pyridyl]ethyl]aniline, lithium salt
3-[l-oxythia-2-[2-(E-2-carboxyethenyl)-3-(8-(4-fluorophenyl)octyloxy)-6- 10 pyridyl]ethyl]aniline,
3- [ 1 -oxythia-2-[2-(E-2-carboxyethenyl)-3-(8-phenyl)octyloxy)-6- pyridyl]ethyl]aniline,
3-[l-thia-2-[2-(E-2-carboxyethenyl)-3-(8-(4-methoxyphenyl)octyloxy)-6- pyridyl]ethyl]-N,N-dimethylaniline, 15 3-[l-thia-2-[2-(E-2-carboxyethenyl)-3-(4-(4-methoxyphenyl)butyloxy)-6- pyridyl]ethyl]aniline, lithium salt
3-[l-oxythia-2-[2-(E-2-carboxyethenyl)-3-(4-(4-methoxyphenyl)butyloxy)-6- pyridyl]ethyl]aniline, lithium salt
3-[l-dioxythia-2-[2-(E-2-carboxyethenyl)-3-(4-(4-methoxyphenyl)butyloxy)-6- 20 pyridyl]ethyl]aniline, lithium salt
3-[2-thia-3-[2-(E-2-carboxyethenyl)-3-(8-(4-methoxyphenyl)octyloxy)-6- pyridyljpropyl] -N,N-dimethylaniline,
3-[l-oxythia-2-[2-(E-2-carboxyethenyl)-3-(8-(4-methoxyphenyl)octyloxy)-6- pyridyl]ethyl]aniline,
25 3-[l -oxythia-2-[2-(E-2-carboxyethenyl)-3-(8-(4-methoxyphenyl)octyloxy)-6- pyridyl]ethyl]-N,N-dimethylaniline,
3-[l-dioxythia-2-[2-(E-2-carboxyethenyl)-3-(8-(4-methoxyphenyl)octyloxy)-6- pyridyl]ethyl] aniline,
(E)-lithium 3-[3-[4-(4-methoxyphenyl)butyloxy]-6-[(2-phenylthio)methyl]-
30. 2-pyridinyl] -2-propenoate,
(E)-lithium 3-[3-[4-(4-methoxyphenyl)butyloxy]-6-[(3,4- dichlorophenylthio)methyl]-2-pyridinyl]-2-propenoate,
(E)-lithium 3-[3-[4-(4-methoxyphenyl)butyloxy]- 6-[(4-chlorophenylthio)methyl]-2-pyridinyl]-2-propenoate, 35 (E)-sodium 3-[3-[4-(4-methoxyphenyl)butyloxy]-6-[(4-fluorophenylthio)methyl]-
" 2-pyridinyl]-2-propenoate,
(E) lithium 3-[3-[4-(4-methoxyphenyl)butyloxy]-6-[(2-chlorophenylthio)methyl]- 2-pyridinyl-2-propenoate, (E)-sodium 3-[3-[4-(4-methoxyphenyl)butyloxy] -6-[(2-chlorobenzylthio)methyl] - 2-pyridinyl]-2-propenoate, E)-sodium3-[3-[4-(4-methoxyphenyl)butyloxy]-6-[(2- methylphenylthio)methyl]-2-pyridinyl]-2-propenoate, ©-sodium 3-[3-[4-(4-methoxyphenyl)butyIoxy]-6-[(3- chlorophenylthio)methyl]-2-pyridinyl]-2-propenoate,
(E)-sodium3-[3-[4-(4-methoxyphenyl)butyIoxy]-6-[(2- methoxyphenylthio)methyl]-2-pyridinyl]-2-propenoate,
(E)-sodium 3-[3-[4-(4-methoxyphenyl)butyloxy]-6-[(2,4- dichlorophenylthio)methyl]-2-pyridinyl]-2-propenoate,
(E)-sodium 3-[3-[4-(4-methoxyphenyl)butyloxy]-6-[(2- bromophenylthio)methyl]-2-pyridinyI]-2-propenoate,
(E)-sodium3-[3-[4-(4-methoxyphenyl)butyloxy]-6-[(2- methylphenylthio)methyI]-2-pyridinyl]-2-propenoate.
Synthesis There are several methods for preparing these compounds. One generic process comprises preparing a 6-(halomethyl)pyridyl adduct and then condensing this fragment with the appropriate mercaptan or alcohol to make compounds where Z is sulfur or oxygen. Usually, functional groups such as acid groups will be protected; any acid group may be derivatized in some manner to render it unreactive. After the condensation reaction, protecting groups may be removed to provide the parent functionality, e.g. an acid. Further modification of these reactive groups can then be carried out, such as forming a salt, an amide, an ester or the like. Sulfonamides are prepared from the corresponding amines by literature methods. Tetrazoles are prepared from the corresponding acid halide, e.g., the acid chloride, by literature methods.
More specific illustrations of chemistry for making these compounds is provided in the following reaction schemes. Scheme I outlines a means for making a substituted phenylalkyl tail which is R. Scheme I
KAPA . _ ΛU 'BuPhzSiCI 'XX
^^^^^^s^OSJtBuPh;, Pd(Ph3P)2CI2
The starting alcohol, represented here as the 3-octyn-l-ol, is commercially available (Lancaster Synthesis). To migrate the triple bond to the w-carbon, KH and 1,3-
10 diaminopropane are combined and stirred to a homogeneous mix. This can be done at ambient temperature or thereabouts. This mix is then cooled, preferably to about 0°C or thereabouts, whereupon the alcohol is added. Stirring is then commenced at about room temperature for 15 to 20 hours or so. Water is added to quench the reaction and the product is recovered.
15 Protecting the alcohol is accomplished by forming a silyl ether illustrated here as the r-butyldiphenylsilyl ether. Other silyl ethers could be used. The alcohol is dissolved in a polar solvent, for example dimethylformamide, and imidazole is added followed by the desired silane. All this is carried out under an inert atmosphere such as argon. Ambient temperature is acceptable for effecting the reaction.
20. Adding the phenyl group is done in a dry environment using an amine for a solvent and an inert atmosphere. To a flask containing a solvent such as triethylamine under argon is added the silylether followed by a halophenyl compound, eg. iodoanisole, a palladium catalyst (P 3P)2PdCl and Cul, both of the latter in catalytic amounts. Heat is used to effect the reaction, usually a temperature of up to about 50°C will be sufficient. 25 Two or more hours, up to six but often about four at the elevated temperature will usually cause the reaction to go to completion.
The triple bond is then saturated, preferably by catalytic hydrogenation. For example, the silyl ether can be dissolved in a saturated solvent such as an alcohol, a heavy metal catalyst added (Pd-C) and the mixture put under H2 for a time sufficient to reduce the triple bond. Stirring for 2 to 6 hours will usually effect the reaction.
Recovering the alcohol is done by treating the silyl ether with a fluoride source such as tetrabutylammonium fluoride. Reactants are combined at a mildly reduced temperature, eg.0°C, then the reaction is allowed to run its course at ambient temperature or there about Several hours may be needed for the reaction to go to completion. Product was recovered by extraction means.
Converting the alcohol to the iodo compound is accomplished using a phosphine, imidazole and I2. In actual practice, this transformation is accomplished by adding to a solution of alcohol under argon, a molar excess of triphenylphosphine, for example, and a three-fold excess of imidazole followed by iodine. Materials are combined at room temperature, but then the reaction pot may be heated to between 50 - 70°C for a brief period, 10 minutes to an hour to complete the reaction. Standard procedures are then used to recover and purify the product.
Scheme II illustrates an alternative process for making R groups.
Scheme II
TsCl
LiAlH pyr.
CΑ-°~\_
While the methoxyphenyl compound is illustrated here, this series of steps and reagents may be used to make other substituted-w-phenylaliphatic groups denoted by R. The starting material, the benzaldehydes, are commercially available or can be readily made by known methods.
To make the acid, first an alkylsilazide is added to an inert solvent under an inert atmosphere. Then the phosphonium salt is added. This addition can be done at room temperature or thereabouts. After a brief period of mixing, this mixture is usually a suspension, the benzaldehyde is added slowly at about room temperature. A slight molar excess of the phosphonium salt is employed After an additional brief period of stirring at about room temperature, the reaction is quenched with water. The solution is acidified and the acid extracted with a suitable organic solvent Further separatory and purification procedures may be employed as desired. The alcohol is made by reducing the acid using a reducing agent. Lithium aluminum hydride or similar reducing agents may be employed, and conditions may be varied as needed to effect the reduction.
The tosylate is prepared in an inert solvent employing a base such as pyridine. Suitable conditions include carrying out the reaction at room temperature or thereabouts for a period of 1 to 5 hours. Other leaving groups similar in function to the tosylate may be prepared and will be useful as a means for forming the R moiety.
These procedures can be used to make the full spectrum of radicals represented by R where it has a terminal phenyl group, including the substituted phenylaliphatic radicals. Benzyl mercaptans, or analogous compounds where m is 1 or greater, are commercially available or may be made by the process of Scheme m.
Scheme m s
H H22N" N NHH2 g Base
X= CI, Br Br"
R= alkyl
Alcohol
Starting material, the haloalkylbenzoates, are commercially available or can be made by methods known in the art. Thiourea is added to a solution of haloalkylbenzoate at ambient temperature or thereabouts. Any appropriate solvent may be used, acetone for example. A precipitate of the thiouronium salts should form under these conditions. The precipitate is collected and dissolved in water and the pH adjusted to about 10.5 with a base, for example a solution of NaOH. Refluxing is then commenced for between 1 and 4 hours. Product, as the free acid, is then recovered by some other separatory and purification means. Esterification is then carried out by mixing the acid with an alcohol, bubbling HC1 through the solution, and letting sit the resulting solution for a time not more than several days; two days usually is sufficient to effect the reaction.
Compounds of formula I where Z is oxygen can be made by the sequence of steps given in Scheme IV. Scheme IV
The starting material is available from Aldrich. It is treated with a mild oxidizing agent such as MnC-2 to oxidize the 2-hydroxyethyl group to the corresponding -aldehyde. The R group is then formed. In this case an ether is prepared under basic conditions using an a-halo intermediate. A tosylate made as per Scheme HI, can also be used in this step. Introducing the acid function at position 2 is accomplished by means of a triphenylphosphoranylidene reagent. The acetate form is illustrated here but other similar reagents could be used. The N-oxide is then formed by means of a peroxy acid. Trifluoroacetic anhydride is used to oxidize the 6-position methyl group. This hydroxymethyl group is then converted to the corresponding halide, (in the hydrohalϊde form) in this case the chloride, by means of thionyl chloride. An alkyl hydroxybenzoate is then reacted with the 6-chloromethyl compound in the presence of tetrabutylammonium iodide and a weak base. The resulting diester can be hydrolyzed to the salt or, further, acidified to give the free acid. An oxidant can be used to regenerate the N-oxide which can then be treated with base to hydrolyze the esters. Esters can be converted to salts, the free acids and other derivatives. Catalytic hydrogenation can be used to reduce the double bond in the Ri group described here.
Scheme V illustrates a method for making compounds where Z is a S and m is 0.
The starting hydrochloride is described in Scheme IV. Instead of treating the hydrochloride with an alcohol, in this instance the mercapto analog of the hydroxybenzoate described above is used. The resulting thioether can be hydrolyzed to give the salt or treated further to give the free acid from which other derivatives of the carboxyl function can be prepared, including alcohols and aldehydes. Also, the double bond in the Ri group can be reduced by catalytic means using a heavy metal catalyst and hydrogen.
Once the thioether is prepared, the sulfone and sulfoxide can be prepared by treating the thioether with an oxidizing agent A peroxy acid or other oxidizing agent can be used.
A method for making compounds where R is alkyl or subsituted alkyl is given in Scheme VI
Scheme VI
1. MCPBA
DIBAL 2. TFAA, DMF 3. Tf20, pyridine 2. (C6H5)3PCHC02Me 4. Pd(OAc)2, dppf MeOH, CO
In this Scheme, 2-hydroxypicolinic acid is converted to the alkyl ester using the corresponding alcohol and an acid to catalyze the reaction. The hydroxyl group is then converted to the trifluσromethy sulfonate by means of trifluoromethanesulfonic anhydride - and a base, e.g. pyridine. The lipid tail is attached using the appropriate alkyl catechol boronateunderpalladium coupling conditions. For example, 1-iododecene and catechol borane are reacted to form the alkyl catechol boronate. Then the alkylation reaction is effected using Pd(OAc)2- The ester is reduced to the corresponding aldehyde with a hydride such as dϋsobutylaluminum hydride (DIBAL). A Wittig olefϊnation is then carried out using, for example, methyl(triphenylphosphoranyUdene)acetate. The resulting pyridyl methyl acrylate is then oxidized to the N-oxide with an oxidizing agent such as 3-chloroperoxybenzoic acid. This oxide is then rearranged to the 2-pyridone with trifluoroacetic anhydride. A trifluoromethylsulfonate is then formed using trifluoromethanesulfonic anhydride and pyridine. Carbomethylation is then effected by means of Pd(OAc)2, a simple alcohol, and carbon monoxide. Selectively reducing the pyridyl-ester (using a hydride such as NaBH4 in a low molecular weight alcohol) yields the 2-(hydroxymethyl)-pyridine. This compound is treated with thionyl chloride to form the 6-chloromethyl compound. This intermediate is transformed to the ethers or thioether of formula I in the same manner as is illustrated in Schemes IV - VI.
Pharmaceutical compositions of the present invention comprise a pharmaceutical carrier or diluent and some amount of a compound of the formula (I). The compound may be present in an amount to effect a physiological response, or it may be present in a lesser amount such that the user will need to take two or more units of the compositon to effect the treatment intended. These compositions may be made up as a solid, liquid or in a gaseous form. Or one of these three forms may be transformed to another at the time of being administered such as when a solid is delivered by aerosol means, or when a liquid is delivered as a spray or aerosol.
The nature of the composition and the pharmaceutical carrier or diluent will, of course, depend upon the intended route of administration, for example parenterally, topically, orally or by inhalation.
For parenteral administration the pharmaceutical composition will be in the form of a sterile injectable liquid such as an ampule or an aqueous or non-aqueous liquid suspension.
For topical administration the pharmaceutical composition will be in the form of a cream, ointment, liniment, lotion, pastes, and drops suitable for administration to the eye, ear, or nose. For oral administration the pharmaceutical composition will be in the form of a tablet, capsule, powder, pellet, atroche, lozenge, syrup, liquid, or emulsion.
When the pharmaceutical composition is employed in the form of a solution or suspension, examples of appropriate pharmaceutical carriers or diluents include: for aqueous systems, water; for non-aqueous systems, ethanol, glycerin, propylene glycol, com oil, cottonseed oil, peanut oil, sesame oil, liquid parafins and mixtures thereof with water; for solid systems, lactose, kaolin and mannitol; and for aerosol systems, dichlorodifluoromethane, chlorotrifluoroethane and compressed carbon dioxide. Also, in addition to the pharmaceutical carrier or diluent, the instant compositions may include other ingredients such as stabilizers, antioxidants, preservatives, lubricants, suspending agents, viscosity modifiers and the like, provided that the additional ingredients do not have a detrimental effect on the therapeutic action of the instant compositions. The pharmaceutical preparations thus described are made following the conventional techniques of the pharmaceutical chemist as appropriate to the desired end product.
Formulations for treating psoriasis can take the form of oral or topical preparations. Topically applied formulations are preferred. Ointments, creams, liniments, lotions, pastes and similar preparations are examples of preferred topical formulations. Aerosols may also be used. These dosage forms will contain between 0.01 and 5 percent by weight of the active ingredient
Usually a compound of formula I is administered, that is applied, to a subject in a composition comprising a nontoxic amount sufficient to produce an inhibition of the symptoms of a disease state. When administered orally, the dosage of the composition is selected from the range of from 50 mg to 1000 mg of active ingredient for each administration. For convenience, equal doses will be administered 1 to 5 times daily with the daily dosage regimen being selected from about 50 mg to about 5000 mg. When a topical formulation is used, the amount applied will depend on the size of the affected area and the severity and progress of the disease, ie. psoriasis.
Included within the scope of this disclosure is the method of treating a disease mediated by LTB4 which comprises administering to a subject a therapeutically effective amount of a compound of formula I, preferably in the form of a pharmaceutical composition. For example, inhibiting the inflammatory response resulting from psoriasis by administration of an effective amount of a compound of formula I is included within the scope of this disclosure. The administration may be carried out in dosage units at suitable intervals or in single doses as needed. Usually this method will be practiced when relief of symptoms is specifically required. However, the method is also usefully carried out as continuous or prophylactic treatment It is within the skill of the art to determine by routine experimentation the effective dosage to be administered from the dose range set forth above, taking into consideration such factors as the degree of severity of the condition or disease being treated, and so forth.
Pharmaceutical compositions and their method of use also include the combination of a compound of formula I with Hi Mockers where the combination contains sufficient amounts of both compounds to treat antigen-induced respiratory anaphylaxis or similar allergic reaction. Representative Hi blockers useful here include: cromolyn sodium, compounds from the ethanolamines class (diphenhydramine), ethylenediamines (pyrilamine), the alkylamine class (chlorpheniramine), the piperazine class (chlorcyclizine), and the phenothiazine class (promethazine). Hi blockers such as 2-[4-(5-bromo-3-methylpyrid-2-yl)butylamino]-5-[(6-methylpyrid-3-yl)methyl]-4- pyrimidone are particularly useful in this invention. Bioassavs
The specificity of the antagonist activity of a number of the compounds of this invention is demonstrated by relatively low levels of antagonism toward agonists such as potassium chloride, carbachol, histamine and PGF2.
The receptor binding affinity of the compounds used in the method of this invention is measured by the ability of the compounds to bind to [3_H]-LTB4 binding sites on human U937 cell membranes. The LTB4 antagonist activity of the compounds used in the method of this invention is measured by their ability to antagonize in a dose dependent manner the LTB4 elicited calcium transient measured with fura-2, the fluorescent calcium probe. The methods employed were as follows: U-937 Cell Culture Conditions
U-937 cells were obtained from Dr. John Bomalaski (Medical College of PA) and Dr. John Lee (SmithKline Beecham Corp., Dept of Immunology) and grown in RPMI- 1640 medium supplemented with 10% (v/v) heat inactivated fetal calf serum, in a humidified environment of 5% CO2, 95% air at 37°C. Cells were grown both in T-flasks and in Spinner culture. For differentiation of the U937 cells with DMSO to macrophage- like cells, the cells were seeded at a concentration of 1 x l(fi cells/ml in the above medium with 1.3% DMSO and the incubation continued for 4 days. The cells were generally at a density of 0.75-1.25 x 10^ cells/ml and were harvested by centrifugation at 800 x g for 10 min.
Preparation of U-937 Cell Membrane Enriched Fraction
Harvested U-937 cells were washed with 50 mM Tris-HCl, pH 7.4 at 25° C containing 1 mM EDTA (buffer A). Cells were resuspended in buffer A at a concentration of 5 x 10? cells/ml and disrupted by nitrogen cavitation with a Parr bomb at 750 psi for 10 min at 0°C. The broken cell preparation was centrifuged at 1,000 x g for 10 min. The supernatant was centrifuged at 50,000 x g for 30 min. The pellet was washed twice with buffer A. The pellet was resuspended at about 3 mg membrane protein/ml with 50mM Tris-HCl, pH 7.4 at 25°C and aliquots were rapidly frozen and stored at -70°C.
Binding of T^HI-LTBA to U-937 Membrane Receptors
[3H]-LTB4 binding assays were performed at 25°C, in 50 mM Tris-HCl (pH 7.5) buffer containing 10 mM CaCl2, 10 mM MgCl2, [3H]-LTB4, U937 cell membrane protein (standard conditions) in the presence or absence of varying concentrations of LTB4, or test compounds. Each experimental point represents the means of triplicate determinations. Total and non-specific binding of [3H]-LTB4 were determined in the absence or presence of 2 mM of unlabeled LTB4, respectively. Specific binding was calculated as the difference between total and nonspecific binding. The radioligand competition experiments were performed, under standard conditions, using approximately 0.2 nM [3H]-LTB4, 20-40 mg of U937 cell membrane protein, increasing concentrations of LTB4 (0.1 mM to 10 mM) or other competing ligands (0.1 mM to 30 mM) in a reaction volume of 0.2 ml and incubated for 30 minutes at 25°C. The unbound radioligand and competing drugs were separated from the membrane bound ligand by a vacuum filtration technique. The membrane bound radioactivity on the filters was determined by liquid scintillation spectrometry.
Saturation binding experiments for U937 cells were performed, under standard conditions, using approximately 15-50 mg of U-937 membrane protein and increasing concentrations of [3H]-LTB4 (0.02-2.0 nM) in a reaction volume of 0.2 ml and incubation at 22°C, for 30 minutes. LTB4 (2 mM) was included in a separate set of incubation tubes to determine non-specific binding. The data from the saturation binding experiments was subjected to computer assisted non-linear least square curve fitting analysis and further analyzed by the method of Scatchard. Loading Differentiated U-937 Cells with Fura-2
Harvested cells were resuspended at 2 x 10^ cells/ml in Krebs Ringer Hensilet buffer containing 0.1% BSA (RIA grade), 1.1 mM MgSO4, 1-0 mM CaCl2 and 5 mM HEPES (pH 7.4, buffer B). The diacetomethoxy ester of fura-2 (fura-2/AM) was added to a final concentration of 2 mM and cells incubated in the dark for 30 minutes at 37°C. The cells were centrifuged at 800 x g for 10 minutes and resuspended at 2 x 10^ cells/ml in fresh buffer B and incubated at 37°C for 20 minutes to allow for complete hydrolysis of entrapped ester. The cells were centrifuged at 800 x g for 10 minutes and resuspended in cold fresh buffer B at 5 x i cells/ml. Cells were maintained on ice in the dark until used for fluorescent measurements. Fluorescent Measurements - Calcium Mobilization
The fluorescence of fura-2-containing U937 cells was measured with a fluorometer designed by the Johnson Foundation Biomedical Instrumentation Group. A fluorometer was equipped with temperature control and a magnetic stirrer under the cuvette holder. The wave lengths are set at 339 nm for excitation and 499 nm for emission. All experiments were performed at 37°C with constant mixing.
U-937 cells were diluted with fresh buffer (B) to a concentration of 1 x 10^ cells/ml and maintained in the dark on ice. Aliquots (2 ml) of the cell suspension were put into 4 ml cuvettes and the temperature brought up to 37°C, (maintained in 37°C, water bath for 10 min). Cuvettes were transferred to the fluorometer and fluorescence measured for about one minute before addition of stimulants or antagonists and followed for about 2 minutes post stimulus. Agonists and antagonists were added as 2 ml aliquots. Antagonists were added first to the cells in the fluorometer in order to detect potential agonist activity. Then after about one minute 10 nM LTB4 (a near maximal effective concentration) was added and the maximal Ca^+ mobilization [Ca-^+j was calculated using the following formula:
F was the maximum relative fluorescence measurement of the sample. Fmax was determined by lysing the cells with 10 ml of 10% Triton X-100 (final Concentration 0.02%). After Fmax was determined 67 ml of 100 mM EDTA solution (pH 10) was added to totally chelate the Ca^+ and quench the fura-2 signal and obtain the Fmin. The [Ca2+j"i level for 10 nM LTB4 in the absence of an antagonist was 100% and basal [Ca2+] j was 0%. The IC50 concentration is the concentration of antagonist which blocks 50% of the lOnM LTB4 induced [Ca2+]j mobilization. The EC50 for LTB4 induced increase in [Ca2"*"] j mobilization was the concentration for half maximal increase. The Ki for calcium mobilization was determined using the formula:
With the experiments described, the LTB4 concentration was 10 nM and the EC50 was 2 nM.
Specific Embodiments The following examples are given to illustrate how to make and use the compounds of this invention. These Examples are just that, examples, and are not intended to circumscribe or otherwise limit the scope of this invention. Reference is made to the claims for defining what is reserved to the inventors by this document.
Example 1 8-(4-Methoxyphenyl octan- 1 -(4-toluenesulfonate')
1(a) 7-Octvn-l-ol.
35% KH in mineral oil (27g, 240mmol) under an argon atmosphere was washed with hexane and treated dropwise with 1,3-diaminopropane. The mixture was stirred at room temperature until it became homogeneous. The flask was cooled to 0∞C and 3- octyn-1-ol (lOg, 79mmol, Lancaster Synthesis) was slowly added. The reaction was then stirred at room temperature for 18 hours. The reaction was quenched with H2O
(50mL) and the product was extracted into ether. The organic layer was washed with 10% HC1 (3X15mL) and brine and dried (MgSO4). Evaporation gave the title product which was used without further purification: lK NMR (90MHz, CDCI3) d 3.65 (t, J=5Hz, 2H, OCH2), 2.23 (m, 2H, CH2), 2.0 (m, 1H, acetylenic), 1.7-1.2 (m, 8H, (CH2)4); IR (neat) umax 3350, 2930, 2125 cm"1.
' 5
1(b) 7-Octyn-l-r-butyldiphenylsilyl ether.
7-Octyn-l-ol (3.8g) was dissolved in dimethylformamide (lOmL) and treated with r-butylchlorodiphenylsilane (10.2mL, 33mmol) and imidazole (3.65g, 45mmol) at O∞ C. The reaction was stirred at O∞ C for 10 minutes and at room temperature for 3
10 hours. Water was added and the product was extracted into ethyl acetate. The ethyl acetate extract was washed with H2O and brine and dried (Na2SO4). The solvent was evaporated and the residue purified by flash column chromatography (silica, hexanes) to give a yellow oil: -1H NMR (250MHz, CDCl3)d7.7 (d, 4H, aryl), 7.4 (m, 6H, aryl), 3.63 (t, 2H, OCH2), 2.23 (m, 2H, R-j), 1.97 (t, 1H, acetylenic), 1.6-1.3 (m, 8H, 5 (CH2)4), 1.05 (s, 9H, r-butyl); IR (film)umax 3321, 2940, 2125 cm"l.
1(c) 8-(4-Methoxyphenyl)-7-octyn-l-r-butyldiphenylsilyl ether
To a flame-dried flask under an argon atmosphere was added 4-iodoanisole (5.34g, 22mmol) in triethylamine (50mL) followed by the addition of 7-octyn-l-t- 0 butyldiphenylsilyl ether (9.84g, 27mmol), (Ph3P)2PdCl2 (350mg, 0.44mmol), and Cul
(200mg, 0.88mmol). The resulting mixture was heated at 50*»C for 4 hours Upon cooling to room temperature the reaction mixture was filtered and the solvent evaporated. The residue was partitioned between ethyl acetate andH2θ and the organic layer was collected and washed with brine and dried (Na2Sθ4). The solvent was evaporated and 5 the residue was purified by flash column chromatography (silica, 1 % ethyl acetate in hexanes) to give an oil: lH NMR (250MHz, CDCI3) 57.7 (d, 4H, aryl), 7.4 (m, 6H, aryl), 7.35 (d, 2H, aryl), 6.8 (d, 2H, aryl), 3.8 (s, 3H, OCH3), 3.7 (t, 2H, OCH2), 2.4 (t, 2H, CH2), 1.7-1.3 (m, 8H, (CH2H), 1.05 (s, 9H, r-butyl).
0 1(d 8-(4-MethoxyphenvDoctan-l-f-butyldiphenyIsilyl ether.
To 8-(4-methoxyphenyl)-7-octyn-l-t-butyldiphenylsilyl ether (2.16g, 4.6mmol) in ethanol (lOmL) and ethyl acetate (10 mL) was added 5% Pd/C (lOO g). The mixture was subjected to 75 psi of H2 for 4 hours. The reaction was filtered through Celite and the solvent evaporated to give an oil: !H NMR (250MHz, CDCI3) δ 7.7 (d, 4H, aryl), 5 7.4 (m, 6H, aryl), 7.05 (d, 2H, aryl), 6.8 (d, 2H, aryl), 3.8 (s, 3H, OCH3), 3.6 (t, 2H, OCH2), 2.5 (t, 2H, benzylic), 1.75-1.3 (m, 12H, 1-0 (s, 9H, t-butyl). 1(e) 8-(4-MethoxyphenvI)octan-l-ol.
8-(4-Methoxyphenyl)octan-l-r-butyldiphenylsilyl ether (2.18g, 4.6mmol) in tetrahydrofuran (20mL) was cooled to 0°°C and treated with tetrabutylammonium fluoride (14mL, 14mmol, 1M in tetrahydrofuran). The cooling bath was removed and the reaction was stirred at room temperature for 24 hours. The reaction was diluted with ethyl acetate and was washed with H2O and brine and dried (Na2S04). The solvent was evaporated and the residue was purified by flash column chromatography (silica, 0-20% ethyl acetate in hexanes) to give a white solid: *H NMR (250MHz, CDCI3) δ 7.15 (d, 2H, aryl), 6.86 (d, 2H, aryl), 3.85 (s, 3H, OCH3), 3.68 (t, 2H, OCH2), 2.62 (t, 2H, benzylic), 1.75-1.3 (m, 12H, (CH2)6).
1 (f) 8-(4-Methoxyphenyl)octan- 1 -(4-toluenesulfonate).
6-(4-Methoxyphenyl)octan-l-ol (5.91g, 25mmol) was dissolved in dry CH2CI2
(lOOmL) under an argon atmosphere and cooled to 0«*C. To this was added pyridine (2.5mL, 30mmol) and 4-toluenesulfonyl chloride (5.4g, 28mmol). The reaction was stirred at O∞C for 20 minutes and at room temperature for 24 hours. The reaction solution was washed with H2O and brine and dried (Na2Sθ4). The solvent was evaporated and the residue purified by flash column chromatography (silica, 0-10% ethyl acetate in hexanes) to give a white solid: 1H NMR (250MHz, CDCI3) δ 7.79 (d, 2H, aryl), 7.35 (d, 2H, aryl), 7.09 (d, 2H, aryl), 6.82 (d, 2H, aryl), 4.04 (s, 2H, OCH2), 3.8 (s, 3H, OCH3), 2.55 (t, 2H, benzylic), 2.46 (s, 3H, CH3), 1.75-1.15 (m, 12H, (CH2)6).
Example 2 6-(4-Methoxyphenyl)hexan- 1 -(4-toluenesulfonate)
2(a) 5-Hexyn- 1 -r-butyldiphenylsilyl ether
5-Hexyn-l-ol (3g, 30mmol, Aldrich) was dissolved in dimethylformamide (lOmL) and treated with r-butylchlorodiphenylsilane (10.2mL, 33mmol) and imidazole (3.65g, 45mmol) at O C. The reaction was stirred at 0∞C for 10 minutes and at room temperature for 3 hours. Water was added and the product was extracted into ethyl acetate. The ethyl acetate extract was washed with H2O and brine and dried (Na2SO4).
The solvent was evaporated and the residue purified by flash column chromatography (silica, hexanes) to give a yellow oil: H NMR (250MHz, CDCI3) δ 7.7 (d, 4H, aryl), 7.4 (m, 6H, aryl), 3.65 (t, 2H, OCH2), 2.2 (m, 2H, CH2), 1.9 (t, 1H, acetylenic), 1.7 (m, 4H, CH2-CH2), 1.05 (s, 9H, r-butyl).
2(b) 6-(4-Methoxyphenyl)-5-hexyn-l-r-butyldiphenylsilyl ether.
To a flame-dried flask under an argon atmosphere was added 4-iodoanisole (5.34g, 22mmol) in triethylamine (50mL) followed by the addition of 5-hexyn-l-r- butyldiphenylsilyl ether (8.83g, 27mmol), (Ph3P)2PdCl2 (350mg, 0.44mmol), and Cul (200mg, O.88mmol). The resulting mixture was heated at 50∞C for 4 hours. Upon cooling to room temperature the reaction mixture was filtered and the solvent evaporated. The residue was partitioned between ethyl acetate and H2O and the organic layer was collected and washed with brine and dried (Na2SO4). The solvent was evaporated and the residue was purified by flash column chromatography (silica, 1% ethyl acetate in hexanes) to give an oil: *H NMR (250MHz, CDCI3) δ 7.7 (d, 4H, aryl), 7.4 (m, 6H, aryl), 7.35 (d, 2H, aryl), 6.8 (d, 2H, aryl), 3.8 (s, 3H, OCH3), 3.7 (t, 2H, OCH2), 2.4 (t, 2H, CH2), 1.7 (m, 4H, CH2-CH2), 1.05 (s, 9H, f-butyl).
2(c) 6-(4-MethoxyphenyI)hexan-l-f-butyldiphenylsilyl ether.
To 6-(4-methoxyphenyl)-5-hexyn-l-r-butyldiphenylsilyl ether (2.0g, 4.6mmol) in ethanol (lOmL) and ethylacetate (lOmL) was added 5% Pd/C (lOOmg). The mixture was subjected to 75 psi of H2 for 4 hours. The reaction was filtered through Celite and the solvent evaporated to give an oil: lR NMR (250MHz, CDCI3) δ 7.7 (d, 4H, aryl), 7.4 (m, 6H, aryl), 7.05 (d, 2H, aryl), 6.8 (d, 2H, aryl), 3.8 (s, 3H, OCH3), 3.6 (t, 2H, OCH2), 2.5 (t, 2H, benzylic), 1.55 (m, 4H, CH2-CH2), 1.3 (m, 4H, CH2-CH2), 1.0 (s, 9H, r-butyl).
2(e) 6-(4-MethoxyphenyI)hexan-l-ol.
6-(4-Methoxyphenyl)hexan-l-f-butyldiphenylsilyl ether (2.0g, 4.6mmol) in tetrahydrofuran (20mL) was cooled to 0∞C and treated with tetrabutylammonium fluoride (14mL, 14mmol, 1M in tetrahydrofuran). The cooling bath was removed and the reaction was stirred at room temperature for 24 hours. The reaction was diluted with ethyl acetate and was washed with H2O and brine and dried (Na2Sθ4). The solvent was evaporated and the residue was purified by flash column chromatography (silica, 0-20% ethyl acetate in hexanes) to give a white solid: -1H NMR (250MHz, CDCI3) δ 7.05 (d, 2H, aryl), 6.8 (d, 2H, aryl), 3.8 (s, 3H, OCH3), 3.65 (t, 2H, OCH2), 2.55 (t, 2H, benzylic), 1.6 (m, 4H, CH2-CH2), 1.4 (m, 4H, CH2-CH2).
2(f) 6-(4-Methoxyphenyl)hexan-l -(4-toluenesulfonate).
6-(4-Methoxyphenyl)hexan-l-ol (5.36g, 25mmol) was dissolved in dry CH2CI2
(lOOmL) under an argon atmosphere and cooled to 0∞C. To this was added pyridine (2.5mL, 30mmol) and 4-toluenesulfonyl chloride (5.4g, 28mmol). The reaction was stirred at O∞C for 20 minutes and at room temperature for 24 hours. The reaction solution was washed with H2O and brine and dried (Na2S04). The solvent was ' evaporated and the residue purified by flash column chromatography (silica, 0-10% ethyl acetate in hexanes) to give a white solid: -1H NMR (250MHz, CDCI3) δ 1.6-1.3 (m, 8H, (CH2)4), 2.4 (s, 3H, CH3), 2.5 (t, 2H, benzylic), 3.8 (s, 3H, OCH3), 4.0 (t, 2H, . OCH2), 6.80 (d, 2H, aryl), 7.0 (d, 2H, aryl), 7.3 (d, 2H, aryl), 7.8 (d, 2H, aryl).
Example 3 E-6-(4-methoxyphenyl)-l-(4-toluenesulfonate)-5-hexene
3(a) E-4-Methoxyphenyl-5-hexenoic acid.
To a freshly prepared solution of lithium hexamethyldisilazide (64mmol) in tetrahydrofuran (30mL), under an argon atmosphere, was added a suspension of (4- carboxybutyl)triphenylphosphonium bromide (17.6g, 30mmol) in tetrahydrofuran
(45mL) at room temperature. The reaction was stirred for 15 minutes during which time the orange-red color of the ylide developed. A solution of 4-anisaldehyde (4.5g, 30mmol) in tetrahydrofuran (30mL) was added dropwise and stirring was continued for an additional 20 minutes. The reaction was quenched with H2O (50mL) and diluted with ether (30mL). The aqueous layer was acidified to pH 1.0 with 3N HCl and the product was extracted into ethyl acetate (3X50mL). The combined organic layers were dried (MgS04) and the product was purified by flash column chromatography (silica, 1% methanol in CH2CI2) to yield the E-olefin as a solid: -H NMR (200MHz, CDCI3) δ 7.3
(d, 2H, aryl), 6.8 (d, 2H, aryl), 6.3 (d, IH, olefin), 6.0 (m, IH, olefin), 3.8 (s, 3H, OCH3), 2.3 (m, 4H, allylic CH2 and CH2CO2), 1.8 (q, 2H, CH2).
3(b) E-4-Methoxyphenyl-5-hexen-l -ol.
E-4-Methoxyphenyl-5-hexenoic acid (l.lg, 5.0mmol) in dry ether (lOmL) was slowly added to a suspension of LiAtt (240mg, ό.Ommol) in ether (lOmL) under an argon atmosphere. The reaction mixture was refluxed for 45 minutes. Upon cooling to room temperature the reaction was quenched with H2O (lOmL) followed by 6N H2SO4
(7mL). Ethyl acetate (20mL) was added and the organic layer was separated and dried (MgSO4); evaporation gave a white crystalline solid: mp. 65-66-*<>C; --H NMR
(200MHz, CDCI3) δ 7.2 (d, 2H, aryl), 6.8 (d, 2H, aryl), 6.3 (d, IH, olefin), 6.1 (m, IH, olefin), 3.8 (s, 3H, OCH3), 3.6 (t, 2H, OCH2), 2.2 (q, 2H, allylic), 1.5 (m, 4H,
CH2- CH2); Anal. Calcd. for C13H18O2: C, 75.65; H, 8.80, found: C, 75.45; H,
8.95; MS (CI): 207 (M+H).
3(c) E-6-(4-methoxyphenyD- l-(4-toluenesulfonate)-5-hexene. E-4-Methoxyphenyl-5-hexen-l-ol (1.6g, 7.0mmol) was dissolved in dry CH2CI2
(50mL) under an argon atmosphere and treated with 4-toluenesulfonyl chloride (7.0g, .
36mmol) and pyridine (3mL). The reaction solution was stirred at room temperature for
- 3.5 hours. Water (40mL) was added to the reaction and the organic layer was separated and dried (MgSO4). The product was purified by flash column chromatography (silica, 10% ethyl acetate in hexane) to give an oil: *H NMR (200MHz, CDCI3) δ 7.8 (d, 2H, aryl), 7.3 (d, 2H, aryl), 7.2 (d, 2H, aryl), 6.8 (d, 2H, aryl), 6.2 (d, IH, olefin), 6.0 (m, IH, olefin), 4.1 (t, 2H, OCH2), 3.8 (s, 3H, OCH3), 2.4 (s, 3H, CH3), 2.1 (q, 2H, allylic ), 1.6 (m, 4H, CH2- CH2); MS (CI): 361 (M+H).
Example 4 l-Iodo-8-(4-methoxvphenvl)octane
4(a) 7-Octyn-l-ol. Potassium hydride, (35%) in mineral oil (27g, 240mmol) under an argon atmosphere was washed with hexane and treated dropwise with
1,3-diaminopropane. The mixture was stirred at room temperature until it became homogeneous. The flask was cooled to 0°C and 3-octyn-l-ol (lOg, 79mmol, Lancaster Synthesis) was slowly added. The reaction was then stirred at room temperature for 18 hours. The reaction was quenched with H2O (50mL) and the product was extracted into ether. The organic layer was washed with 10% HCl and brine and dried (MgS04).
Evaporation gave the captioned product as a colorless oil which was used without further purification: lH NMR (90MHz, CDCI3) δ 3.65 (t, J=5Hz, 2H, O-CH2), 2.23 (m, 2H, CH2), 2.0 (m, IH, acetylenic), 1.7-1.2 (m, 8H, (CH2)4); IR (neat) nmax 3350, 2930, 2125 cm"1.
4(b) 7-Octyn-l-tbutyIdiphenylsilyl ether. To a cooled (0°C) solution of 7-octyn-l-ol (9.3g, 73.7mmol) in dimethylformamide (DMF) (70mL) under an argon atmosphere was added imidazole (7.5g, HOmmol) followed by the dropwise addition of f-butylchlorodiphenylsilane (21 mL, 81 mmol). The reaction was then stirred at room temperature for 2 hours. The reaction solution was diluted with Et2θ and washed with H2O and brine and dried (MgS04). Purification by flash column chromatography (silica, 3% EtOAc in hexane ) provided the product as a colorless oil: ^H NMR (250MHz, CDCI3) δ 7.7 (d, 4H, aryl), 7.4 (m, 6H, aryl), 3.63 (t, 2H, O-CH2), 2.23 (m, 2H, CH2), 1.97 (t, IH, acetylenic), 1.6-1.3 (m, 8H, (CH2)4), 1-05 (s, 9H, t- butyl); IR (film) nmaχ 3321, 2940, 2125 cm"1.
4(c) 8-(4-Methoxyphenyl)-7-octyn-l-f-butyldiphenylsilyl ether. To a flame dried flask containing triethylamine (140mL) under an argon atmosphere was added 4-iodoanisole (13.3g, 56.9mmol), 7-octyn-l-f-butyldiphenylsilyl ether (24.9g, 68.3mmol), (Ph3P)2PdCl2 catalyst (793mg, 1.13mmol), and Cul (431mg, 2.27mmol). The resulting mixture was heated at 50°C for 4 hours. Upon cooling to room temperature the reaction mixture was filtered, the solids were washed with Et2θ and the solvent was evaporated. The residue was diluted with Et2θ and washed with 5% HCl, H2O, NaHCO3, and brine and dried (MgSO4). Purification by flash column chromatography (silica, 2% EtOAc in hexane) gave the product as an orange oil: 1H NMR (250MHz, CDCI3) δ 7.7 (d, 4H, aryl), 7.4 (m, 6H, aryl), 7.35 (d, 2H, aryl), 6.8 (d, 2H, aryl), 3.8 (s, 3H, OCH3), 3.7 (t, 2H, O-CH2), 2.4 (t, 2H, CH2), 1.7-1.3 (m, 8H, (CH2)4), 1-05 (s, 9H, rbutyl).
4(d) 8-(4-Methoxyphenyl)octan-l-r-butyldiphenylsilyl ether.
8-(4-Methoxyphenyl)-7-octyn-l-t-butyldiphenylsilyl ether (30g, 63.7mmol) was dissolved in EtOH (125mL) and EtOAc (125mL) and treated with 5% Pd-C catalyst (3g). The reaction was vigorously stirred under an H2 atmosphere (balloon pressure) for 4 hours. The reaction mixture was filtered through a pad of Celite and the solvent was evaporated. The resulting pale yellow oil was pure by nmr analysis and was used directly for the next step: -1H NMR (250MHz, CDCI3) δ 7.7 (d, 4H, aryl), 7.4 (m, 6H, aryl), 7.05 (d, 2H, aryl), 6.8 (d, 2H, aryl), 3.8 (s, 3H, OCH3), 3.6 (t, 2H, O-CH2), 2.5 (t, 2H, benzylic), 1.75-1.3 (m, 12H, (CH2)6), 1-0 (s, 9H, r-butyl).
4(e) 8-(4-Methoxyphenyl)octan-l-ol. To a cooled (0°C) solution of 8-(4-methoxyphenyl)octan-l-f-butyldiphenylsilyl ether (63mmol) was added tetrabutylammonium fluoride (70mL, 70mmol; 1M solution in THF). The cooling bath was removed and the reaction was stirred at room temperature for 4.5 hours. The solvent was evaporated and the residue was dissolved in Et2θ. This was washed with H20, 5% HCl, NaHC03, m& brine and dried (MgSθ4). Purification by flash column chromatography (silica, 30% EtOAc in hexane) gave the product as a colorless solid: -*H NMR (250MHz, CDCI3) δ 7.15 (d, J=8.6Hz, 2H, aryl), 6.86 (d, J=8.6Hz, 2H, aryl), 3.85 (s, 3H, OCH3), 3.68 (t, j=6.5Hz, 2H, O-CH2), 2.62 (t, J=7.6Hz, 2H, benzylic), 1.75-1.3 (m, 12H, (CH2)6); MS (CI): 254.2 (M+NH4); mp 47-49°C.
4(fl 1 -Iodo-8-(4-methoxyphenyl)octane. To a stirred solution of 8-(4- methoxyphenyl)octan-l-ol (12.3g, 52mmol) in dry toluene (200mL) under an argon atmosphere was added tiiphenylphosphme (17.8g, 67.6mmol) and imidazole (10.6g, 156mmol). After the imidazole had dissolved, I2 (17. lg, 67.6mmol) was added. The reaction was then heated at 65°C for 30 minutes. Upon cooling to room temperature the reaction was concentrated to 1/4 volume. The remaining solution was diluted with Et2θ and washed with H2O and brine and dried (MgSO4). The solvent was removed and the resulting residue was dissolved in CH2CI2 and applied to a. flash chromatography column (silica). Elution with 2% EtOAc in hexane provided the product as a colorless oil (slight contamination with triphenylphosphine): 1H NMR (250MHz, CDCI3) δ 7.08 (d, J=8.6Hz, 2H, aryl), 6.82 (d, J=8.6Hz, 2H, aryl), 3.78 (s, 3H, OCH3), 3.17 (t, J=7.4Hz, 2H, I-CH2), 2.54 (t, J=7.6Hz, 2H, benzylic), 1.85 (m, 2H, CH2), 1.60 (m, 2H, CH2), 1.31 (m, 8H, aliphatic); MS (CI): 364.2 (M+NH4).
Example 5 3-|"l-Oxythia-2-r2-(E-2-carboxyethenyl)-3-dodecyloxy-6-pyridynethynbenzoic acid. dilithium salt
1(a) 3-Hydroxy-6-methyI-2-pyridine carboxaldehyde.
2,6-Lutidine-a--%3-diol (l.Og, 7.18mmol, Aldrich) was suspended in dry CH2CI2 (40mL) and treated with Mnθ2 (6. lg, 70mmol). The reaction was stirred at room temperature for 6 hours. The reaction mixture was filtered through a pad of Celite and the solvent was removed in vacuo. The aldehyde was used directly in the next step without further purification: 1H NMR (250MHz, CDCI3): δ 10.65 (s, IH, OH), 10.30
(s, IH, CHO), 7.30 (dd, 2H, 4-pyridyl, 5-pyridyl), 2.55 (s, 3H, CH3).
5(b) 3-Dodecyloxy-6-methyl-2-pyridine carboxaldehyde.
3-Hydroxy-6-methyl-2-pyridine carboxaldehye obtained above was dissolved in dry dimethylfoπnamide (lOmL) and treated with 1-iodododecane (2. lmL, 8.62mmol) and anhydrous K2CO3 (3.0g, 21.7mmol) under an argon atmosphere. The reaction was heated at 90° C for lh with vigorous stirring. Upon cooling to room temperature the reaction mixture was poured into ethyl acetate (lOOmL); the ethyl acetate solution was washed with H2O (3X20mL) and brine and dried (MgSθ4). The solvent was removed under reduced pressure and the crude product was used directly in the next step without further purification: -1H NMR (250MHz, CDCI3): δ 10.40 (s, IH, CHO), 7.30 (m, 2H, 4-pyridyl, 5- pyridyl), 4.07 (t, J=6.5Hz, 2H, OCH2), 2.6 (s, 3H, CH3), 1.85-0.89 (m, 23H, aliphatic).
5(c) 2-(E-2-CarboxymethylethenyI)-3-dodecyloxy-6-methylpyridine.
3-DodecyIoxy-6-methyl-2-pyridine carboxaldehyde obtained above was dissolved in dry toluene (12mL) under an argon atmosphere and treated with methyl
(triphenyIphosphoranylidene)acetate (5.0g, 15mmol). The reaction was heated for 1 hour at 50*»C. Upon cooling to room temperature the reaction was diluted with ethyl acetate (lOOmL) and washed with H2O (2X20mL) and brine and dried (MgSθ4).
Purification by flash column chromatography (silica, 7.5% ethyl acetate in petroleum ether) gave a colorless solid: -tø NMR (250MHz, CDCI3): δ 8.07 (d, J=15.7Hz, IH, olefin), 7.10 (m, 2H, 4-pyridyl, 5-pyridyl), 7.05 (d, J=15.7Hz, IH, olefin), 3.98 (t, . J=6.6Hz, 2H, OCH2), 3.80 (s, 3H, C02CH3), 2.49 (s, 3H, CH3), 1.88-0.85 (m,
23H, aliphatic). 5(d) 2-(E-2-Carboxymethylethenyl)-3-dodecyloxy-6-methylpyridine N-oxide. 2-(E-2-Carboxymethylethenyl)-3-dodecyloxy-6-methylpyridine (2.15g, 5.95mmol) was dissolved in dry CH2CI2 (20mL) and cooled to O∞C; 85% m- chloroperoxybenzoic acid (1.45g, 7.14mmol) was added and the reaction was stirred at O∞C for 30 minutes and at room temperature for 16 hours. The reaction solution was poured into saturated aqueous NaHCO3 (20mL). The aqueous phase was extracted with CH2CI2 (3X20mL) and the combined CH2CI2 extracts were washed with H2O (20mL) and brine and dried (MgSO4). The crude pale yellow solid was used directly in the next step without further purification: **H NMR (250MHz, CDCI3): δ 8.23 (d, J=16.2Hz, IH, olefin), 7.58 (d, J=16.2Hz, IH, olefin), 7.13 (d, J=8.8Hz, IH, 5- pyridyl), 6.79 (d, J=8.8Hz, IH, 4-pyridyl), 4.06 (t, J=6.6Hz, 2H, OCH2), 3.81 (s, 3H, CO2CH3), 2.45 (s, 3H, CH3), 1.92-0.85 (m, 23H, aliphatic); MS (CI): 378.2 (M+H).
5(e) 2-(E-2-Carboxymethylethenyl)-3-dodecyloxy-6-(hvdroxymethyl)pyridine. 2-(E-2-Carboxymethylethenyl)-3-dodecyloxy-6-methylpyridine N-oxide obtained above was suspended in dry dimethylformamide (20mL) and cooled to O∞C under an argon atmosphere. To this was slowly added trifluoroacetic anhydride (8.5mL, 60.2mmol). The reaction was stirred at 0-»C for 10 minutes and then at room temperature for 16 hours; thin layer chromatography indicated that two reaction products were present (alcohol and trifluoroacetate). The reaction solution was slowly added to a cooled (0 C) saturated aqueous Na2Cθ3 solution (lOOmL). The aqueous solution was extracted with ethyl acetate (2X50mL) and the combined ethyl acetate extracts were washed with H2O (2X20mL) and brine and dried (MgSO4); the solvent was removed in vacuo. The product mixture was dissolved in methanol (20mL), treated with anhydrous K2CO3 (500mg), and vigorously stirred for 20 minutes. The reaction was diluted with ethyl acetate (75mL) and washed with H2O (30mL). The aqueous phase was extracted with ethyl acetate (2X20mL) and the combined ethyl acetate extracts were washed with brine (2X20mL) and dried (MgSO4). Purification by flash column chromatography
(silica, 25% ethyl acetate in petroleum ether) gave a colorless solid: *H NMR (250MHz, CDCI3): δ 8.09 (d, J=15.8Hz, IH, olefin), 7.24 (d, J=8.6Hz, IH, 5-pyridyl), 7.16 (d,
J=8.6Hz, IH, 4-pyridyl), 7.03 (d, J=15.8Hz, IH, olefin), 4.69 (d, J=4.2Hz, 2H, CH2), 4.03 (t, J=6.6Hz, 2H, OCH2), 3.82 (s, 3H, C02CH3), 3.61 (t, J=4.2Hz, IH,
OH), 1.91-0.85 (m, 23H, aliphatic); MS (CI): 378.3 (M+H).
5(f) 2-(E-2-Carboxymethylethenyl)-3-dodecyloxy-6-(chloromethvI)pyridine hydrochloride.
2-(E-2-Carboxymethylethenyl)-3-dodecyloxy-6-(hydroxymethyl)pyridine (250mg, 0.662mmol) was dissolved in dry toluene (lOmL) under an argon atmosphere and cooled to O∞C. Thionyl chloride (0.50mL, 6.85mraol) was slowly added and the . solution was stirred at O∞C for 30 minutes followed by lh at room temperature. The solvent and excess thionyl chloride were removed at reduced pressure. The crude hydrochloride salt was then used directly in the next step without further purification.
5(g) Methyl 3-π-thia-2-r2-(E-2-carboxymethylethenyl)-3-dodecyloxy-6- pyridyflethyflbenzoate.
2-(E-2-Carboxymethylethenyl)-3-dodecyloxy-6-(chloromethyl)pyridine hydrochloride (0.662mmol), prepared as previously described, was dissolved in dry dimethylformamide (lmL) and sequentially treated with methyl 3-mercaptobenzoate (167mg, 0.993mmol), anhydrous CS2CO3 (970mg, 2.98mmol), and tetrabutylammonium iodide (25mg, 0.068mmol) under an argon atmosphere. The reaction was heated at 65<- -C for 45 minutes. Upon cooling to room temperature the reaction was diluted with ethyl acetate (30mL) and washed with H2O (2X15mL) and brine and dried (MgSO4). Purification by flash column chromatography (silica, petroleum ether: CH2Cl2-ethyl acetate, 70: 25: 5) gave a colorless oil: !H NMR
(250MHz, CDCI3): δ 8.04 (s, IH, 2-phenyl), 8.03 (d, J=15.7Hz, IH, olefin), 7.81 (d, J=7.9Hz, IH, 4-phenyl), 7.52 (d, J=7.9Hz, IH, 6-phenyl), 7.31 (dd, J=7.9Hz, IH, 5- phenyl), 7.29 (d, J=8.6Hz, IH, 5-pyridyl), 7.12 (d, J=8.6Hz, IH, 4-pyridyl), 6.98 (d, J=15.7Hz, IH, olefin), 4.26 (s, 2H, CH2S), 3.97 (t, J=6.6Hz, 2H, OCH2), 3.90 (s, 3H, C02CH ), 3.81 (s, 3H, CO2CH3), 1.85-0.85 (m, 23H, aliphatic).
Proceeding in a similar manner, but substituting the appropriate thiol for 3- mercaptobenzoate, and using known chemistry where appropriate, the following compounds were made:
N-[3-[l-thia-2-[2-(E-2-carboxyethenyl)-3-(8-(4-methoxyphenyl)octyloxy)-6- pyridyl]ethyl]phenyl]oxamic acid, dilithium salt,
3-[l-thia-2-[2-CE-2-carboxyethenyl)-3-(8-(4-methoxy-phenyl)octyloxy)-6- pyridyl]ethyl]benzene, lithium salt,
3-[l-thia-2-[2-(E-2-carboxyethenyl)-3-(8-(4-methoxyphenyl)octyIoxy)-6- pyridyl]ethyl]anisole, lithium salt, N-[3-[l-thia-2-[2-(E-2-carboxyethenyl)-3-(8-(4-methoxyphenyl)octyloxy)-6- pyridyl]ethyl]phenyl]benzene-sulfonamide, dilithium salt
N-[3-[l-thia-2-[2-(E-2-carboxyethenyl)-3-(8-(4-methoxy-phenyl)octyloxy)-6- pyridyl]ethyl]phenyl]-trifluoromethane-sulfonamide, dilithium salt, and
3-[l-thia-2-[2-CE-2-carboxyethenyl)-3-(8-(4-methoxyphenyl)octyloxy)-6- pyridyI]ethyl]benzoic acid, dilithium salt. 5(h) Methyl 3-1" l-oxythia-2-r2-(E-2-carboxymethylethenyl)-3-dodecyloxy-6- pyridvπethvflbenzoate.
Methyl 3-[l-thia-2-[2-(E-2-carboxymethylethenyl)-3-dodecyloxy-6- pyridyljethyljbenzoate (320mg, 0.606mmol) was dissolved in dry CH2CI2 (2.5mL) and cooled to O∞C. 85% -Chloroperoxybenzoic acid (130mg, 0.64mmol) was added and the solution was stirred for 10 minutes at O∞C. The reaction was diluted with ethyl acetate (60mL) and washed with saturated aqueous NaHC03 (2X20mL) and brine and dried (MgS04). Purification by flash column chromatography (silica, CH2Cl2:petroleum etheπethyl acetate, 50:25:25) gave a colorless solid: -*H NMR
(250MHz, CDCI3): δ 8.11 (d, J=7.9Hz, IH, 4-phenyl), 8.10 (s, IH, 2-phenyl), 7.94 (d, J=15.7Hz, IH, olefin), 7.67 (d, J=7.9Hz, IH, 6-phenyl), 7.53 (dd, J=7.9Hz, IH, 5-phenyl), 7.19 (d, J=8.6Hz, IH, 5-pyridyl), 7.14 (d, J=8.6Hz, IH, 4- pyridyl), 6.68 (d, J=15.7Hz, IH, olefin), 4.21 (d, J=12.5Hz, IH, CHS), 4.15 (d, J=12.5 Hz, IH, CH'S), 3.99 (t, J=6.6Hz, 2H, OCH2), 3.93 (s, 3H, CO2CH3), 3.81 (s, 3H,
CO2CH3), 1.87-0.85 (m, 23H, aliphatic); Anal. Calcd. for C, 66.27; H, 7.60; N, 2.58, found: C, 65.97; H, 7.22; N, 2.46; MS (CI): 544.3 (M+H).
5(i) 3-ri-Oxythia-2-r2-(E-2-carboxyethenyl)-3-dodecyloxy-6-pyridyl1ethvnbenzoic acid. dilithium salt
Methyl 3-[l-oxythia-2-[2-(E-2-carboxymethylethenyl)-3-dodecyloxy-6- pyridyl]ethyl]benzoate (120mg, 0.221mmol) was dissolved in tetrahydrofuran (1.3mL) and methanol (0.66mL) under an argon atmosphere and treated with 1M LiOH (0.66mL, 0.66mmol). The reaction was stirred at room temperature for 18 hours. The tetrahydrofuran and methanol were removed under reduced pressure and the product was purified by Reversed Phased MPLC (RP-18 silica, 10-65% methanol in H2O) and isolated by lyophilization to give a colorless amorphous solid: -*H NMR (250MHz, CD3OD): δ 8.27 (s, IH, 2-phenyl), 8.11 (d, J=7.9Hz, IH, 4-phenyl), 7.77 (d,
J=15.7Hz, IH, olefin), 7.60 (d, J=7.9Hz, IH, 6-phenyl), 7.58 (dd, J=7.9Hz, IH, 5- phenyl), 7.27 (d, J=8.6Hz, IH, 5-pyridyl), 7.04 (d, J=15.7Hz, IH, olefin), 7.01 (d, J=8.6Hz, IH, 4-pyridyl), 4.33 (d, J=12.5Hz, IH, CHS), 4.25 (d, J=12.5Hz, IH, CH'S), 4.04 (t, J=6.5Hz, 2H, OCH2), 1.88-0.86 (m, 23H, aliphatic); Anal. Calcd. for C28H35°6NSLi2 * 2 H2O: C, 59.68; H, 6.97; N, 2.49, found: C, 59.49; H, 6.98; N, 2.58; FAB-MS: (+ve), 528.5 (M+H). Example 6 3-ri-Dioxythia-2-r2-(E-2-carboxyethenyl)-3-dodecyloxy-6-pyridyl1ethyl1benzoic acid. dilithium salt ■ 5
6(a) Methyl 3-fl -dioxythia-2-r2-(E-2-carboxymethyl-ethenyl)-3-dodecyloxy-6- pyridyπethyllbenzoate.
Methyl 3-[l-thia-2-[2-(E-2-carboxymethylethenyl)-3-dodecyloxy-6- pyridyl]ethyl]benzoate (107mg, 0.197mmol) was dissolved in dry CH2CI2 (2mL),
10 cooled to O∞C, and treated with 85% m-chloroperoxybenzoic acid (44mg, 0.217mmol). The reaction was stirred at O∞C for 1.5 hours. The reaction was diluted with ethyl acetate (30mL) and washed with saturated aqueous NaHCθ3 (15mL) and brine and dried (MgSG*4). The product was purified by flash column chromatogrphy (silica, petroleum ether: CH2Cl2:ethyl acetate, 60:25: 15) to give a colorless solid: -1H NMR (250MHz,
15 CDCI3): δ 8.30 (s, IH, 2-phenyl), 8.26 (d, J=7.7Hz, IH, 4-phenyl), 7.83 (d,
J=7.7Hz, IH, 6-phenyl), 7.82 (d, J=15.7Hz, IH, olefin), 7.55 (dd, J*=7.7Hz, IH, 5- phenyl), 7.42 (d, J=8.6Hz, IH, 5-pyridyl), 7.21 (d, J=8.6Hz, IH, 4-pyridyl), 6.28 (d, J=15.7Hz, IH, olefin), 4.52 (s, 2H, CH2SO2), 4.00 (t, J=6.6Hz, 2H, OCH2), 3.92 (s, 3H, CO2CH3), 3.78 (s, 3H, CO2CH3), 1.87-0.85 (m, 23H, aliphatic); Anal. Calcd.
20 for C30H41O7NS: C, 64.38; H, 7.38; N, 2.50, found: C, 64.71; H, 7.41; N, 2.57; MS (CI): 560.3 (M+H).
6(b) 3-ri-Dioxythia-2-r2-(E-2-carboxyethenyl)-3-dodecyloxy-6-pyridyI1ethyIlbenzoic acid, dilithium salt
25 Methyl 3-[l-dioxythia-2-[2-(E-2-carboxymethylethenyI)-3-dodecyloxy-6- pyridyljethyljbenzoate (20, 170mg, 0.303mmol) was dissolved in tetrahydrofuran (3.0mL) and methanol ( OmL) and treated with lMLiOH (l.OmL, l.Ommol). The reaction was stirred at room temperature for 24 hours. The tetrahydrofuran and methanol were removed under reduced pressure and the product was purified by Reversed Phased 0 MPLC (RP-18 silica, 10-65% methanol in H2O) and isolated by lyophilization to give a colorless amorphous solid: -1H NMR (250MHz, CD3OD): δ 8.40 (s, IH, 2-phenyl), 8.22 (d, J=7.9Hz, IH, 4-phenyI), 7.69 (d, J=7.9Hz, IH, 6-phenyl), 7.67 (d, J=15.7Hz, IH, olefin), 7.53 (dd, J=7.9Hz, IH, 5-phenyl), 7.30 (d, J=8.6Hz, IH, 5- pyridyl), 7.18 (d, J=8.6Hz, IH, 4-pyridyl), 6.85 (d, J=15.7Hz, IH, olefin), 4.62 (s, 5 2H, CH2SO2), 4.03 (t, J=6.5Hz, 2H, OCH2), 1.87- 0.86 (m, 23H, aliphatic); Anal. Calcd. for C28H35θ7NSLi2 • 7/4 H2O: C, 58.48; H, 6.74; N, 2.44, found: C, 58.58; H, 6.74; N, 2.67; FAB-MS: (+ve), 544.3 (M+H); (-ve), 536.2 (M-Li). Example 7 4-ri-Oxythia-2-r2-(E-2-carboxyethenyl)-3-dodecyloxy-6-pyridyl1ethyl]benzoic acid. dilithium salt 4-[l-Oxythia-2-[2-(E-2-carboxyethenyl)-3-dodecyloxy-6-pyridyl]ethyl]benzoic acid, dilithium salt, was prepared according to the procedure described for 3-[l-oxythia- 2-[2-(E-2-carboxyethenyl)-3-dodecyloxy-6-pyridyl]ethyl]benzoic acid, dilithium salt substituting methyl 4-mercaptobenzoate for methyl 3-mercaptobenzoate.
7(a) Methyl 4-ri-thia-2-r2-(E-2-carboxymethylethenyl)-3-dodecyloxy-6- pyridyllethvπbenzoate --H NMR (250MHz, CDCI3): δ 8.05 (d, J=15.7Hz, IH, olefin), 7.90 (d, J=8.5Hz, 2H, aryl), 7.37 (d, J=8.5Hz, 2H, aryl), 7.35 (d, J=8.6Hz, IH, 5- pyridyl), 7.14 (d, J=8.6Hz, IH, 4-pyridyl), 7.01 (d, J=15.7Hz, IH, olefin), 4.29 (s, 2H, CH2S), 3.98 (t, J=6.5Hz, 2H, OCH2), 3.88 (s, 3H, C02CH ), 3.86 (s, 3H, CO2CH3), 1.86-0.85 (m, 23H, aliphatic).
7(b) Methyl 4-\ l-oxythia-2-r2-(E-2-carboxymethylethenyl)-3-dodecyloxy-6- pyridvnethvnbenzoate. mp. 107-109∞C; -H NMR (250MHz, CDCI3) δ 8.13 (d,
J=8.5Hz, 2H, aryl), 7.95 (d, J=15.7Hz, IH, olefin), 7.56 (d, J=8.5Hz, 2H, aryl), 7.18 (d, J=8.6Hz, IH, 5-pyridyl), 7.11 (d, J=8.6Hz, IH, 4-pyridyl), 6.62 (d, J=15.7Hz, IH, olefin), 4.22 (d, J=12.5Hz, IH, CHS), 4.13 (d, J=12.5 Hz, IH, CH'S), 4.03 (t, J=6.5Hz, 2H, OCH2), 3.99 (s, 3H, CO2CH3), 3.78 (s, 3H, CO2CH3), 1.92-0.85 (m, 23H, aliphatic); Anal. Calcd. for C30H41O6NS: C, 66.27; H, 7.60; N, 2.58, found: C, 65.99; H, 7.55; N, 2.27; MS (CI): 544 (M+H). '
7(c) 4-ri-Oxythia-2-r2-(E-2-carboxyethenvI)-3-dodecyloxy-6-pyridyllethyllbenzoic acid, dilithium salt, mp. 205-207~C (dec); -H NMR (250MHz, CD3OD): δ 8.09 (d,
J=8.5Hz, 2H, aryl), 7.78 (d, J=15.7Hz, IH, olefin), 7.59. (d, J=8.5Hz, 2H, aryl), 7.26 (d, J=8.6Hz, IH, 5-pyridyl), 7.07 (d, J=15.7Hz, IH, olefin), 6.98 (d, J=8.6Hz, IH, 4- pyridyl), 4.33 (d, J=12.5Hz, IH, CHS), 4.22 (d, J=12.5Hz, IH, CH'S), 4.04 (t, J=6.5Hz, 2H, OCH2), 1.88-0.86 (m, 23H, aliphatic); Anal. Calcd. for c28H35°6NSLi2 ' 3 2 H20: c> 60-64; H- 6.91; N, 2.53, found: C, 60.41; H, 6.73; N, 2.60; FAB-MS: (+ve), 528.5 (M+H).
Example 8
2-ri-Oxythia-2-r2-(E-2-carboxyethenyl)-3-dodecyloxy-6-pyridyllethynbenzoic acid. dilithium salt. 2-[l-Oxythia-2-[2-(E-2-carboxyethenyl)-3-dodecyloxy-6-pyridyl]ethyl]benzoic acid, dilithium salt, was prepared according to the pmcedure described for 3-D -oxythia- 2-[2-(E-2-carboxyethenyl)-3-dodecyloxy-6-pyridyl]ethyl]benzoic acid, dilithium salt, but substituting methyl 2-mercaptobenzoate for methyl 3-mercaptobenzoate.
8(a) Methyl 2-ri-thia-2-r2-(E-2-carboxymethylethenyl)-3-dodecyloxy-6- pyridvnethvnbenzoate. -tø NMR (250MHz, CDCI3): δ 8.07 (d, J=15.7Hz, IH, olefin), 7.96 (d, J=7.8Hz, IH, 3- phenyl), 7.56 (d, J=7.8Hz, IH, 6-phenyl), 7.43 (d, J=8.6Hz, IH, 5- pyridyl), 7.42 (m, IH, aryl), 7.14 (d, J=8.6Hz, IH, 4-pyridyl), 7.10 (m, IH, aryl), 7.06 (d, J=15.7Hz, IH, olefin), 4.27 (s, 2H, CH2S), 3.98 (t, J=6.6Hz, 2H, OCH2), 3.91 (s, 3H, C02CH ), 3.83 (s, 3H, .CO2CH3), 1.86-0.86 (m, 23H, aliphatic).
8(b) Methyl 2-ri-oxythia-2-r2-(E-2-carboxymethylethenyl)-3-dodecyloxy-6- pyridynethyllbenzoate. mp. 60-62<»C; lH NMR (250MHz, CDCI3): δ 8.13 (d, J=7.8Hz, IH, 3-phenyl), 7.87 (d, J=15.7Hz, IH, olefin), 7.68 (d, J=7.8Hz, IH, 6-phenyl), 7.53 (m, 2H, aryl), 7.33 (d, J=8.6Hz, IH, 5-pyridyl), 7.16 (d, J=8.6Hz, IH, 4-pyridyl), 6.46 (d, J=15.7Hz, IH, olefin), 4.42 (d, J=12.6Hz, IH, CHS), 4.30 (d, J=12.6Hz, IH, CH'S), 4.03 (s, 3H, CO2CH3), 4.0 (t, J=6.6Hz, 2H, OCH2), 3.81 (s, 3H, CO2CH3), 1.87-0.85 (m, 23H, aliphatic); Anal. Calcd. for C30H41O6NS C, 66.27; H, 7.60; N, 2.58, found: C, 66.37; H, 7.67; N, 2.56; MS (CI): 544 (M+H).
8(c) 2-ri-oxythia-2-r2-(E-2-carboxyethenyl)-3-dodecyloxy-6-pyridyllethyllbenzoic acid. dilithium salt, mp. 235∞C (dec); -1H NMR (250MHz, CD3OD): δ 8.07 (d, J=7.8Hz,
IH, 3-phenyl), 7.76 (d, J=7.8Hz, IH, 6-phenyl), 7.71 (d, J=15.7Hz, IH, olefin), 7.53 (m, 2H, aryl), 7.31 (s, 2H, pyridyl), 6.92 (d, J=15.7Hz, IH, olefin), 4.72 (d,
J=12.6Hz, IH, CHS), 4.12 (d, J=12.6Hz, IH, CH'S), 4.05 (t, J=6.5Hz, 2H, OCH2),
1.88-0.86 (m, 23H, aliphatic); FAB-MS: (+ve), 528.3 (M+H). i addition, by subsituting the appropriate reagents and intermediates for those recited in 4(a) - 4(c), and by using chemistry available in the art, the following compounds were made:
3-[l-oxythia-2-[2-(E-2-carboxyethenyl)-3-(8-(4-methoxyphenyl)octyloxy)-6- pyridyl]ethyl]benzoic acid, dilithium salt,
N-[3-[l-oxythia-2-[2-(E-2-carboxyethenyl)-3-dodecyloxy-6- pyridyl]ethyl]phenyl]trifluoro-methanesulfonamide, dilithium salt, N-[3-[l-oxythia-2-[2-0E-2-carboxyethenyl)-3-(8-(4-methoxyphenyl)octyloxy)-6- pyridyl]ethyl]phenyl]trifluoro-methanesulfonamide, dilithium salt,
N-[3-D-oxythia-2-[2-(E-2-carboxyethenyl)-3-(8-(4-methoxyphenyl)octyloxy)-6- pyridyl]ethyl]phenyl]-benzenesulfonamide, dilithium salt 3-[l-oxythia-2-[2-(E-2-carboxyethenyl)-3-(8-(4-methoxyphenyl)octyloxy)-6- pyridyl] ethyl] anisole, lithium salt,
3-[l-oxythia-2-[2-(E-2-carboxyethenyl)-3-(8-(4-methoxyphenyl)octyloxy)-6- pyridyl]ethyl]benzene, lithium salt. • 5
Example 9 3-ri-Oxa-2-r2-(E-2-carboxyethenyl)-3-dodecyloxy-6-pyridvnethyl1benzoic acid. dilithium salt
10 9(a) Methyl 3-ri-oxa-2-r2-(E-2-carboxymethylethenyl)-3-dodecyl-oxy-6- pyridvnethvHbenzoate.
2-(E-2-Carboxymethylethenyl)-3-dodecyloxy-6-(chloromethyl)pyridine hydrochloride, prepared as per Example 1(a) - 1(f), was dissolved in dry dimethylformamide (2mL) and treated sequentially with methyl 3-hydroxybenzoate 15 (152mg, l.OOmmol, Aldrich), anhydrous K2CO3 (500mg, 3.62mmol), and tetrabutylammonium iodide (24.4mg, 0.066mmol) under an argon atmosphere. The reaction was heated at 90∞C for 1 hour. Upon cooling to room temperature the reaction was diluted with ethyl acetate (50mL) and washed with H2O (3X15mL) and brine and dried (MgSO4). Purification by flash column chromatography (silica, CH2CI2:
20 petroleum ether: ethyl acetate, 50:48:2) gave a colorless solid: -1H NMR (250MHz,
CDCI3): δ 8.09 (d, J=15.8Hz, IH, olefin), 7.69 (s, IH, 2-phenyl), 7.65 (d, J=7.9Hz,
IH, 4- phenyl), 7.44 (d, J=8.6Hz, IH, 5-pyridyl), 7.34 (dd, J=7.9Hz, IH, 5-phenyl), 7.22 (d, J=8.6Hz, IH, 4-pyridyl), 7.16 (d, J=7.9Hz, IH, 6-phenyl), 7.07 (d, J= 15.8Hz, IH, olefin), 5.18 (s, 2H, CH2), 4.02 (t, J=6.6Hz, 2H, OCH2), 3.91 (s, 25 3H, CO2CH3), 3.82 (s, 3H, C02CH3), 1.90-0.88 (m, 23H, aliphatic): Anal. Calcd. for C30H41O6N • 1/8 mole toluene: C, 70.88; H, 8.09; N, 2.68, found: C, 70.98; H, 8.19; N, 2.64; MS (CI): 512.4 (M+H).
9(b) 3-ri-Oxa-2-r2-(E-2-carboxyethenvI)-3-dodecyloxy-6-pyridyllethyl1benzoic acid. 30 dilithium salt.
. Methyl 3-[l-oxa-2-[2-(E-2-carboxymethylethenyl)-3-dodecyloxy-6- pyridyl]ethyl]benzoate (80mg, 0.156mmol) was dissolved in tetrahydrofuran (1.34mL) and methanol (0.50mL) and treated with lMLiOH (0.50mL, 0.50mmol). The reaction was stirred at room temperature for 20 hours. The tetrahydrofuran and methanol were
35 removed at reduced pressure and the product was purified by Reversed Phased MPLC
(RP-18 silica, 10-65% methanol in H2O) and isolated by lyophilization to give a colorless amorphous solid; --H NMR (250MHz, CD3OD): δ - 7.81 (d, J=15.7Hz, IH, _ olefin), 7.62 (s, IH, 2-phenyl), 7.56 (d, J=7.9Hz, IH, 4-phenyl), 7.44 (d,.J=8.6Hz, IH, 5-pyridyl), 7.40 (d, J=8.6Hz, IH, 4-pyridyl), 7.26 (dd, J=7.9Hz, IH, 5- phenyl), 7.07 (d, J=15.7Hz, IH, olefin), 7.05 (d, J=7.9Hz, IH, 6- phenyl), 5.13 (s, 2H, CH2), 4.07 (t, J=6.5Hz, 2H, OCH2), 1.89-0.89 (m, 23H, aliphatic); Anal. Calcd. for C28H35°6NLi2 ' 5/2 H2O: C, 62.22; H, 7.46; N, 2.59, found: C, 62.06; H, 7.37; N, 2.82; FAB- MS: (+ve), 502.3 (M+Li); (-ve), 488.2 (M-Li).
9(c) 3-ri-Oxa-2-r2-(E-2-carboxyethenyl)-3-dodecyloxy-6-pyridyllethvnbenzoic acid. N- oxide. dilithium salt
Methyl 3-11 -oxa-2-r2-(E-2-carboχymethylethenyl)-3-dodecylox v-6- pyridvnethyllbenzoate. N-oxide. Methyl 3-[l-oxa-2-[2-(E-2-carboxymethylethenyl)-3- dodecyloxy-6-pyridyl]ethyl]benzoate (130mg, 0.254mmol) was dissolved in dry CH2CI2 (1.5mL), cooled to 0«C, and treated with 85% m-chloroperoxybenzoic acid
(57mg, 0.28mmol). The reaction was stirred at 0»C for 10 minutes and then for 20 hours at room temperature. The reaction was diluted with ethyl acetate (30mL) and washed with saturated aqueous NaHCO3 (15mL), H2O (lOmL), and brine and dried (MgSθ4). The product was purified by flash column chromatography (silica, CH2CI2: petroleum etheπ ethyl acetate, 50: 40: 10) to give a colorless solid. -1H NMR (250MHz, CDCI3): δ 8.24 (d, J=16.2Hz, IH, olefin), 7.71 (d, J=8.0Hz, IH, 4-phenyl), 7.68 (s,
IH, 2-phenyl), 7.60 (d, J=16.2Hz, IH, olefin), 7.46 (d, J=9.0Hz, IH, 5-pyridyl), 7.38 (dd, J=8.0Hz, IH, 5-phenyl), 7.22 (d, J=8.0Hz, IH, 6-phenyl), 6.9 (d, J=9.0Hz, IH, 4-pyridyl), 5.32 (s, 2H, CH2), 4.10 (t, J=6.6Hz, 2H, OCH2), 3.92 (s, 3H, CO2CH3), 3.83 (s, 3H, CO2CH3), 1.94-0.88 (m, 23H, aliphatic); Anal.Calcd. for C3oH41O7N: C, 68.29; H, 7.83; N, 2.65, found: C, 68.27; H, 7.82; N, 2.66; MS (CI): 528.3 (M+H).
9(d) 3-ri-Oxa-2-r2-(E-2-carboxyethenyl)-3-dodecyloxy-6-pyridynethyl1benzoic acid. N-oxide. dilithium salt.
Methyl 3-[l-oxa-2-[2-(E-2-carboxymethylethenyl)-3-dodecyloxy-6- pyridyl]ethyl]benzoate, N-oxide (HOmg, 0.208mmol) was dissolved in tetrahydrofuran (2mL) and methanol (0.65mL) and treated with IM liOH (0.65mL). The reaction was stirred at room temperature for 20 hours. The tetrahydrofuran and methanol were removed under reduced pressure and the product was purified by Reversed Phase MPLC (RP-18 silica, 10-65% methanol in H2O) and isolated by lyophilization to give a colorless amorphous solid. IH NMR (250MHz, CD3OD): δ 7.99 (d, J=16.2Hz, IH, olefin), 7.64 (s, IH, 2-phenyl), 7.60 (d, J=8.0Hz, IH, 4-phenyl), 7.52 (d, J=9.0Hz, IH, 5-pyridyl), 7.45 (d, J=16.2Hz, IH, olefin), 7.30 (d, J=9.0Hz, IH, 4-pyridyl), 7.29 (dd, J=8.0Hz, IH, 5-phenyl), 7.08 (d, J=8.0Hz, IH, 6-phenyI), 5.30 (s, 2H, CH2), 4.17 (t, J=6.6Hz, 2H, OCH2), 1.95-0.86 (m, 23H, aliphatic); Anal. Calcd. for C28H35<->7NLi2 ' 3H20: C, 59.47; H, 7.31; N, 2.48, found: C, 59.46; H, 6.91; N, 2.50; FAB-MS: (+ve), 512.2 (M+H); (-ve), 504.5 (M-Li).
Proceeding in a similar manner, but substituting the appropriate intermediates, the following compounds were made: 3-[l-oxa-2-[2-(E-2-carboxyethenyl)-3-(8-(4-methoxyphenyl)-octyloxy)-6- pyridyljethyljbenzoic acid, N-oxide, dilithium salt,
3-[l-oxa-2-[2-(E,E-4-carboxybuta-l,3-dienyl)-3-(8-(4- methoxyphenyl)octyloxy)-6-pyridyl]ethyl]benzoic acid, N-oxide, dilithium salt,
3-[l-oxa-2-[2-(E-2-carboxyethenyl)-3-(8-(4-methoxyphenyl)-nonyloxy)-6- pyridyljethyl] benzoic acid, N-oxide, dilithium salt,
N-[3-[l-oxa-2-[2-(E-2-carboxyethenyl)-3-(8-(4-methoxy-phenyl)octyloxy)-6- pyridyl]ethyl]phenyl]trifluoromethane-sulfonamide, N-oxide, dilithium salt,
4-methoxy-3-[l-oxa-2-[2-(E-2-carboxyethenyl)-3-(8-(4- methoxyphenyl)octyloxy)-6-pyridyl]ethyl]benzoic acid, dilithium salt, N-[3-[l-oxa-2-[2-(E-2-carboxyethenyl)-3-(8-(4-methoxyphenyl)octyloxy)-6- pyridyl]ethyl]phenyl]acetamide, N-oxide, lithium salt,
3-[l-oxa-2-[2-(E-2-carboxyethenyl)-3-(7-(4-methoxybenzyl-sulfonyl)heptyloxy)- 6-pyridyl]ethyl]benzoic acid, N-oxide, dilithium salt,
3-[l-oxa-2-[2-(E-2-carboxyethenyl)-3-(7-(4-methoxyphenyl-sulfonyl)heptyloxy)- 6-pyridyl]ethyl]benzoic acid, N-oxide, dilithium salt,
3-[l-oxa-2-[2-(E-2-diethylphosphonoethenyl)-3-dodecyloxy-6- pyridyl]ethyl]benzoic acid, N-oxide, lithium salt,
N-[3-[l-oxa-2-[2-(E-2-carboxyethenyl)-3-(8-(4-methoxyphenyl)octyloxy)-6- pyridyl]ethyl]phenyl]oxamic acid, dilithium salt, N-[6-methoxy-3-[l-oxa-2-[2-(E-2-carboxyethenyl)-3-(8-(4- methoxyphenyl)octyloxy)-6-pyridyl]ethyl]phenyl]-trifluoromethane-sulfonamide, N- oxide, dilithium salt,
N-[6-methoxy-3-[l-oxa-2-[2-(E-2-carboxyethenyl)-3-(8-(4- methoxyphenyl)octyloxy)-6-pyridyl]ethyl]phenyl]-trifluoromethane-sulfonamide, dilithium salt,
N-[3-[l-oxa-2-[2-(E-2-carboxyethenyl)-3-(8-(4-methoxy-phenyl)octyloxy)-6- pyridyl]ethyl]phenyl]oxamic acid, N-oxide, dilithium salt,
3-[l-oxa-2-[2-(E-2-ethylphosphonoethenyl)-3-dodecyloxy-6- pyridyl]ethyl]benzoic acid, N-oxide, dilithium salt, 3-[l-oxa-2-[2-(E-2-carboxyethenyl)-3-(8-(4-methoxy-phenyl)octyloxy)-6-
- pyridyl]ethyl]benzene, lithium salt,
3-[l-oxa-2-[2-(E-2-carboxyethenyl)-3-(8-(4-methoxy-phenyl)octyloxy)-6- pyridyl]ethyl]phenylurea, lithium salt, 3-[l-oxa-2-[2-(E-2-carboxyethenyl)-3-(8-(4-methoxy-phenyl)octyloxy)-6- pyridyl]ethyl]benzonitrile, lithium salt,
3-[l-oxa-2-[2-(E-2-carboxyethenyl)-3-(8-(4-methoxy-phenyl)octyloxy)-6- pyridyl]ethyl]phenol, lithium salt, and 3-[l-oxa-2-[2-(E-2-carboxyethenyl)-3-(8-(4-methoxyphenyl)octyloxy)-6- pyridyl]ethyl]benzamide, fithium salt
Example 10 3-ri-Oxa-2-r2-(E-2-carboxyethenyl)-3-(8-(4-methoxyphenyl)octyloxy)-6- pyridynethyllaniline lithium salt
10(a) 7-Octyn-l-oI. 35% KH in mineral oil (27g, 240mmol) under an argon atmosphere was washed with hexane and treated dropwise with 1,3-diaminopropane. The mixture was stirred at room temperature until it became homogeneous. The flask was cooled to 0° C and 3-octyn-l-ol (lOg, 79mmol, Lancaster Synthesis) was slowly added. The reaction was then stirred at room temperature for 18 hours. The reaction was quenched with H2O (50mL) and the product was extracted into ether. The organic layer was washed with 10% HCl and brine and dried (MgSO4). Evaporation gave a colorless oil which was used without further purification: ---H NMR (90MHz, CDCI3) δ 3.65 (t, J=5Hz, 2H, O-CH2), 2.23 (m, 2H, CH2), 2.0 (m, IH, acetylenic), 1.7-1.2 (m, 8H, (CH2)4); IR (neat) nmax 3350, 2930, 2125 cm"1.
10(b) 7-Octyn-l-ibutyldiphenvIsilyl ether. To a cooled (0° C) solution of 7-octyn-l-ol (9.3g, 73.7mmol) in DMF (70mL) under an argon atmosphere was added imidazole (7.5g, 1 lOmmol) followed by the dropwise addition of tøutylchlorodiphenylsilane. The reaction was then stirred at room temperature for 2 hours. The reaction solution was diluted with Et2θ and washed with H2O and brine and dried (MgS04). Purification by flash column chromatography (silica, 3% EtOAc in hexane ) provided a colorless oil: -*H NMR (250MHz, CDCI3) δ 7.7 (d, 4H, aryl), 7.4 (m, 6H, aryl), 3.63 (t, 2H, O-CH2), 2.23 (m, 2H, CH2), 1.97 (t, IH, acetylenic), 1.6-1.3 (m, 8H, (CH2)4), 1.05 (s, 9H, tbutyl); IR (film) nma 3321, 2940, 2125 cπr*.
10(c) 8-(4-Methoxyphenyl)-7-octyn-l-*butyldiphenylsilyl ether.
To a flame dried flask containing triethylamine (140mL) under an argon atmosphere was added 4-iodoanisole (13.3g, 56.9mmoI), 7-octyn-l-r-butyldiphenylsilyl ether (24.9g, 68.3mmol), (Ph3P)2PdCl2 catalyst (793mg, 1.13mmoI), and Cul (431mg, 2.27mmol). The resulting mixture was heated at 50° C for 4 hours. Upon cooling to room temperature the reaction mixture was filtered, the solids were washed with Et2θ and the solvent was evaporated. The residue was diluted with Et2θ and washed with 5% HCl, H2O, NaHCO3, and brine and dried (MgSO4). Purification by flash column chromatography (silica, 2% EtOAc in hexane) gave an orange oil: --H NMR (250MHz, CDCI3) δ 7.7 (d, 4H, aryl), 7.4 (m, 6H, aryl), 7.35 (d, 2H, aryl), 6.8 (d, 2H, aryl), 3.8 (s, 3H, OMe), 3.7 (t, 2H, O-CH2), 2.4 (t, 2H, CH2), 1.7-1.3 (m, 8H, (CH2)4), 1-05 (s, 9H, tbutyl).
10(d) 8-(4-Methoxyphenyl)octan-l-tbutyldiphenylsilyl ether.
8-(4-Methoxyphenyl)-7-octyn-l-r-butyldiphenylsilyl ether (30g, 63.7mmol) was dissolved in EtOH (125mL) and EtOAc (125mL) and treated with 5% Pd-C catalyst (3g). The reaction was vigorously stirred under an H2 atmosphere (balloon pressure) for 4 hours. The reaction mixture was filtered through a pad of celite and the solvent was evaporated. The resulting pale yellow oil was pure by nmr analysis and was used directly for the next step: *H NMR (250MHz, CDCI3) δ 7.7 (d, 4H, aryl), 7.4 (m, 6H, aryl), 7.05 (d, 2H, aryl), 6.8 (d, 2H, aryl), 3.8 (s, 3H, OMe), 3.6 (t, 2H, 0-CH2), 2.5 (t, 2H, benzylic), 1.75-1.3 (m, 12H, (CH2)6), 1.0 (s, 9H, tbutyl).
10(e) 8-(4-Methoxyphenyl)octan-l-ol. To a cooled (0° C) solution of 8-(4-methoxyphenyl)octan-l-tbutyldiphenylsilyl ether (63mmol) was added tetrabutylammonium fluoride (70mL, 70mmol; IM solution in THF). The cooling bath was removed and the reaction was stirred at room temperature for 4.5 hours. The solvent was evaporated and the residue was dissolved in Et2θ. This was washed with H20, 5% HCl, NaHCθ3, and brine and dried (MgSU4). Purification by flash column chromatography (silica, 30% EtOAc in hexane) gave a colorless solid: *H NMR (250MHz, CDCI3) δ 7.15 (d, 2H, aryl), 6:86 (d, 2H, aryl), 3.85 (s, 3H, OMe), 3.68 (t, 2H, O-CH2), 2.62 (t, 2H, benzylic), 1.75-1.3 (m, 12H, (CH2)6); MS (CI): 254.2
10(f) l-Iodo-8-(4-methoxyphenyl)octane. To a stirred solution of 8-(4- methoxyphenyl)octan-l-ol (12.3g, 52mmol) in dry toluene (200mL) under an argon atmosphere was added triphenylphosphine (17.8g, 67.6mmol) and imidazole (10.6g, 156mmol). After the imidazole had dissolved I2 (17. lg, 67.6mmol) was added. The reaction was then heated at 65° C for 30 minutes. Upon cooling to room temperature the reaction was concentrated to 1/4 volume. The remaining solution was diluted with Et2θ and washed with H2O and brine and dried (MgS04). The solvent was removed and the resulting residue was dissolved in CH2CI2 and applied to a flash chromatography column
(silica). Elution with 2% EtOAc in hexane provided a colorless oil (slight contamination with triphenylphosphine): -Η NMR (250MHz, CDCI3) δ 7.08 (d, J=8.6Hz, 2H, aryl), 6.82 (d, J=8.6Hz, 2H, aryl), 3.78 (s, 3H, Me), 3.17 (t, J=7.4Hz, 2H, I-CH2), 2.54 (t, J=7.6Hz, 2H, benzylic), 1.85 (m, 2H, CH2), 1.60 (m, 2H, CH2), 1.31 (m, 8H, aliphatic); MS (CD: 364.2 (M+NH4).
10(g) 3-Hvdroxy-6-methyl-2-pyridine carboxaldehyde. 2,6-Lutidine-a2,3-diol (15g, 107.8mmol; Aldrich) was suspended in dry CH2CI2 (200mL) and treated with MnC>2 (47g, 539mmol). The reaction was stirred at room temperature for 6 hours. The reaction mixture was filtered through a pad of celite and the solvent was evaporated. The crude aldehyde was obtained as a tan solid and was used directly for the next step: H NMR (250MHz, CDCI3) δ 10.65 (s, IH, OH), 10.30 (s, IH, aldehyde), 7.30 (m, 2H, 4,5- pyridyl), 2.55 (s, 3H, methyl).
10(f) 3-r8-(4-Methoxyphenyl)octyloxy1-6-methyl-2-pyridine carboxaldehyde. To a solution of l-iodo-8-(4-methoxyphenyl)octane (16.3g, 47.1mmol) in dry DMF (45mL) under an argon atmosphere was added 3-hydroxy-6-methyl-2-pyridine carboxaldehyde (7.7g, 56.2mmol) and anhydrous K2CO3 (32g, 235mmol). The reaction was vigorously stirred at 90 °C for 1.5 hours. Upon cooling to room temperature the reaction was diluted with EtOAc and washed with H2O, aq NH4CI, and brine and dried (MgSQ-i). Evaporation provided crude aldehyde as a dark oil that was used without further purification.
10(g) 2-(E-2-Carboxymethylethenyl)-3-r8-(4-methoxyphenyl)octyloxy1 -6- methylpyridine. 3-[8-(4-Methoxyphenyl)octyloxy]-6-methyl-2-pyridine carboxaldehyde obtained above was dissolved in dry toluene (lOOmL) under an argon atmosphere and treated with methyl (triphenylphosphoranylidene)acetate (16g, 48mmol). The reaction was heated for 1 hour at 50° C. Upon cooling to room temperature the reaction was diluted with EtOAc and washed with H2O and brine and dried (MgS04). Purification by flash column chromatography (silica, 20% EtOAc in hexane) gave a pale yellow oil: -*H NMR (250MHz, CDCI3) δ 8.07 (d, J=15.7Hz, IH, olefin), 7.10 (m, 4H, phenyl, 4,5- pyridyl), 7.07 (d, J=15.7Hz, IH, olefin), 6.81 (d, J=8.6Hz, 2H, phenyl), 3.97 (t, J=6.5Hz, 2H, 0-CH2), 3.79 (s, 3H, methyl ester), 3.78 (s, 3H, OMe), 2.54 (t, J=7.6Hz, 2H, benzylic), 2.48 (s, 3H, methyl), 1.85 (m, 2H, CH2), 1.60 (m, 2H, CH2), 1.37 (m, 8H, aliphatic); MS (CI): 412.3 (M+H).
10(h) 2-(E-2-CarboxymethylethenvI)-3-r8-(4-methoxyphenyl)octyloxy1-6- methylpyridine N-oxide. 2-(E-2-Carboxymethylethenyl)-3-[8-(4- methoxyphenyl)octyloxyl-6-methylpyridine (17.1g, 41.5mmol) was dissolved in dry CH2CI2 (105mL) and cooled to 0° C; 50% mCPBA (15.8g, 45.8mmol) was added in three portions over 10 minutes. The cooling bath was removed and the reaction was stirred for 15 hours at room temperature. The reaction was poured into aqueous NaHCO3 and the product extracted into CH2CI2. The organic extract was washed with H2O and brine and dried (MgSO4). The crude product was obtained as a yellow solid and was used without further purification.
10(i) 2-(E-2-Carboxymethylethenyl)-3-r8-(4-methoxyphenyl)octyloxy1-6- hvdroxymethylpyridine. 2-(E-2-Carboxymethylethenyl)-3-[8-(4- methoxyphenyl)octyloxy]-6-methylpyridine N-oxide obtained above was suspended in dry DMF (130mL) and cooled to 0 °C under an argon atmosphere. To this was slowly added trifluoroacetic anhydride (56mL, 400mmol). The reaction was maintained at 0 °C for 20 minutes followed by 18 hours at room temperature. The reaction solution was slowly added to a solution of saturated aqueous Na2CO3 and stirred for 1 hour. The product was then extracted into EtOAc; the combined organic extracts were washed with H2O and brine and dried (MgSO.4). Purification by flash column chromatography (silica, EtOAc:hexane:CH2Cl2, 30:20:50) gave a waxy solid: -Η NMR (250MHz, CDCI3) δ 8.08 (d, J=15.7Hz, IH, olefin), 7.23 (d, J=8.6Hz, IH, 5-pyridyl), 7.16 (d, J=8.6Hz, IH, 4-pyridyl), 7.09 (d, J=8.6Hz, 2H, phenyl), 7.03 (d, J=15.7Hz, IH, olefin), 6.82 (d, J=8.6Hz, 2H, phenyl), 4.69 (d, J=4.1Hz, 2H, CH2-OH), 4.01 (t, J=6.5Hz, 2H, O- CH2), 3.82 (s, 3H, methyl ester), 3.78 (s, 3H, OMe), 3.62 (t, J=4.1Hz, IH, OH), 2.55 (t, J=7.6Hz, 2H, benzylic), 1.85 (m, 2H, CH2), 1.58 (m, 2H, CH2), 1.44 (m, 8H, aliphatic); MS (CI): 428.2 (M+H).
10(i) 3-Aminophenol føutylcarbamate. 3-Aminophenol (2.0g, 18.3mmol; Aldrich) was dissolved in CH2CI2 (18mL) and DMF (6mL) and treated with d butyl dicarbonate (5.0mL, 21.7mmol). The reaction was stirred under an argon atmosphere for 18 hours. The reaction solution was diluted with EtOAc and washed with H2O and brine and dried (MgSO4). Purification by flash column chromatography (silica, EtOAc:hexane:CH2θ2, 15:60:25) gave a colorless solid: H NMR (250MHz, CDCI3) δ 7.15 (m, 2H, aryl), 6.72 (m, IH, aryl), 6.53 (m, 2H, aryl, OH), 6.0 (s, IH, NH), 1.54 (s, 9H, tbutyl); MS (CI): 210.2 (M+H); mp 95-97 °C.
10(k) 2-(E-2-Carboxymethylethenyl)-3-r8-(4-methoxyphenyl)octyloxy1-6-r(3- amino)phenoxymethyl1pyridineibutylcarbamate. To a cooled (0 °C) solution of SOCI2 (0.5 lmL, 7.0mmol) in dry toluene (2mL) under an argon atmosphere was added a solution of 2-(E-2-carboxymethylethenyl)-3-[8-(4-methoxyphenyl)oc tyloxy]-6- hydroxymethylpyridine (300mg, 0.70mmol) in toluene (5mL). After 5 minutes the cooling bath was removed and the reaction was stirred for 2 hours at room temperature. The toluene and excess SOCI2 were evaporated. To this was added dry DMF (0.90mL), 3-aminophenol tøutylcarbamate (209mg, Ommol), and anhydrous CS2CO3 (1.63g, 5.0mmol). The reaction was heated at 90 °C under an atmosphere of argon for 2 hours. Upon cooling to room temperature the reaction was diluted with EtOAc and washed with H20, 10% NaOH, H2O, and brine and dried (MgSO4). Purification by flash column chromatography (silica, EtOAc:hexane:CH2θ2, 7:63:30) yielded a colorless oil: --H NMR (250MHz, CDCI3) δ 8.09 (d, J=15.7Hz, IH, olefin), 7.44 (d, J=8.6Hz, IH, aryl), 7.15 (m, 5H, aryl), 7.05 (d, J=15.7Hz, IH, olefin), 6.90 (m, IH, aryl), 6.82 (d, J=8.6Hz, 2H, aryl), 6.65 (m, IH, aryl), 6.51 (s, IH, NH), 5.12 (s, 2H, CH2-0), 4.0 (t, J=6.5Hz, 2H, 0-CH2), 3.81 (s, 3H, methyl ester), 3.78 (s, 3H, OMe), 2.54 (t, J=7.6Hz, 2H, benzylic), 1.88 (m, 2H, CH2), 1.51 (s, 9H, Hrotyl), 1.46 (m, 10H, aliphatic).
10(1) 3-ri-Oxa-2-r2-(E-2-carboxymethylethenyl)-3-(8-(4-methoxy-phenyl)octyloxy)-6- pyridvπethvHaniline.
2-(E-2-Carboxymethylethenyl)-3-[8-(4-methoxyphenyl)-octyloxy]-6-[(3- amino)phenoxymethyl]pyridine -butylcarbamate (348mg, 0.562mmol) was dissolved in dry CH2CI2 (3.0mL) under an argon atmosphere and cooled to O∞ C. Anisole (0.09mL, 0.83mmol) was added followed by trifluoroacetic acid (0.6mL). The reaction was stirred for 1 hour at 0° C and then for 3 hours at room temperature. The reaction was quenched with aqueous NaHC03. The product was extracted into CH2CI2 and the organic extracts were washed with brine and dried (MgSO4). Purification by flash column chromatography (silica, EtOAc:hexane:CH2Cl2, 20:50:30) gave a pale yellow oil: *R NMR (250MHz, CDCI3) δ 8.09 (d, J=15.7Hz, IH, olefin), 7.44 (d, J=8.6Hz, IH, 5- pyridyl), 7.17 (d, J=8.6Hz, IH, 4-pyridyl), 7.08 (m, 3H, aryl), 7.05 (d, J=15.7Hz, IH, olefin), 6.88 (d, J=8.6Hz, 2H, aryl), 6.42 (m, IH, aryl), 6.31 (m, IH, aryl), 6.29 (m, IH, aryl), 5.10 (s, 2H, CH2-O), 4.02 (t, J=6.5Hz, 2H, O-CH2), 3.81 (s, 3H, methyl ester), 3.78 (s, 3H, OMe), 3.70 (broad singlet, 2H, NH2), 2.54 (t, J=7.6Hz, 2H, benzylic), 1.88 (m, 2H, CH2), 1.62 (m, 2H, CH2), 1.40 (m, 8H, aliphatic); Analysis calcd for C31H38N2O5 • 1/2 H20: C, 70.56; H, 7.45; N, 5.31; found-: C, 70.74; H, 7.36; N, 5.06; MS (CI): 519.3 (M+H).
10(m) 3-ri-Oxa-2-r2-(E-2-carboxyethenyl)-3-(8-(4-methoxyphenyl)-octyloxy)-6- pyridvπethvflaniline. lithium salt. 3-[l-Oxa-2-[2-(E-2-carboxymethylethenyl)-3-(8-(4- methoxyphenyl)octyloxy)-6-pyridyl]ethyl]aniline (30mg, 0.0578mmol) was dissolved in THF (0.36mL) and MeOH (0.24mL) and treated with 1.0M LiOH (0.12mL, 0.12mmol). The reaction was stirred under an argon atmosphere for 6 hours. The solvent was evaporated and the product purified by Reversed Phased MPLC (RP-18 silica, H2O- MeOH gradient). Lyophilization yielded a colorless amorphous solid: --H NMR ■ (250MHz, d4-MeOH) δ 7.80 (d, J=15.7Hz, IH, olefin), 7.38 (s, 2H, 4,5-pyridyl), 7.06 (d, J=15.7Hz, IH, olefin), 7.05 (d, J=8.6Hz, 2H, phenyl), 6.97 (t, J=8.0Hz, IH, 5*- phenyl), 6.78 (d, J=8.6Hz, 2H, phenyl), 39 (m, IH, 2'-phenyl), 6.35 (m, 2H, 4\6'- phenyl), 5.04 (s, 2H, CH2-O), 4.04 (t, J=6.5Hz, 2H, O-CH2), 3.74 (s, 3H, OMe), 2.52 (t, J=7.6Hz, 2H, benzylic), 1.85 (m, 2H, CH2), 1.57 (m, 4H, aliphatic), 1.36 (m, 6H, aliphatic); Analysis calcd for C3oH35N2O5Li • 9/4 H2O: C, 65.38; H, 7.22; N, 5.08; found: C, 65.39; H, 7.24; N, 5.23; MS (FAB): 511 (M+H), 517 (M+Li).
Example 11 5-Carboxy-3-ri-oxa-2-r2-(E-2-carboxyethenyl)-3-(8-(4-methoxyDhenvI)octyloxy)-6- pyridyllethyllaniline. dilithium salt
11 (a) 3-Amino-5-carboxymethylphenol. HCl gas was bubbled through a solution of 3- amino-5-hydroxybenzoic acid hydrochloride (1.9g, lOmmol; Lancaster Synthesis) in MeOH (50mL) at 0 °C for 30 minutes. The reaction was stoppered and allowed to sit for 5 hours. The solvent was removed in vacuo and the residue was dissolved in H2O. The aqueous solution was neutralized with 5% Na2CC«3 and the product was extracted into EtOAc. The organic solution was then dried (MgSO4) and evaporated producing 1.5g (89%) of ester as an off-white solid that was used without additional purification: IH NMR (250MHz, CDCI3) δ 6.85 (dd, J=1.9Hz, IH, aryl), 6.80 (dd, J=1.9Hz, IH, aryl), 6.30 (dd, J=1.9Hz, IH, aryl), 3.80 (s, 3H, methyl ester).
1Kb) 3-Amino-5-carboxymethylphenol ft>utylcarbamate. A solution of 3-amino-5- carboxymethylphenol (1.5g, 8.0mmol) in DMF (8mL) under an argon atmosphere was treated with di-'butyldicarbonate (2.1g, lOmmol). The reaction was sthred at room temperature for 16 hours. The reaction was diluted with EtOAc and washed with H2O and brine and dried (MgS04). Reαystallization from Et2θ - hexane gave a tan solid: -Η NMR (250MHz, CDCI3) δ 7.35 (dd, J=1.9Hz, IH, aryl), 7.15 (dd, J=1.9Hz, IH, aryl), 6.65 (dd, J=1.9Hz, IH, aryl), 6.45 (s, IH, NH), 3.80 (s, 3H, methyl ester), 1.4 (s, 9H, 'butyl).
11 (c) 2-(E-2-Carboxymethylethenyl)-3-r8-(4-methoxyphenyl)-octvIoxy1-6-r(3-amino- 5-carboxymethyl)phenoxymethvnpyridine lbutylcarbamate. To a cooled (0 °C) solution of SOCI2 (0.34mL, 4.6mmol) in dry toluene (1.5mL) under an argon atmosphere was added a solution of 2-(E-2-carboxymethylethenyl)-3-t8-(4-methoxyphenyl)octyloxy]-6- hydroxymethylpyridine (197mg, 0.46mmol) in toluene (3mL). After 5 minutes the cooling bath was removed and the reaction was stirred for 2 hours at room temperature. The toluene and excess SOCI2 were evaporated. To this was added dry DMF (LOmL), 3-amino-5-carboxymethylphenol 'butylcarbamate (150mg, 0.5mmol), and anhydrous CS2CO3 ( Og, 3.0mmol). The reaction was heated at 90 °C under an atmosphere of argon for 2 hours. Upon cooling to room temperature the reaction was diluted with EtOAc and washed with JfeO, 10% NaQH, føO, and brine and dried (MgSU4). Purification by flash column chromatography (silica, 20% EtOAc in hexane) yielded a colorless oil: lH NMR (250MHz, CDCI3) δ 8.09 (d, J=15.7Hz, IH, olefin), 7.55 (dd, J=1.9Hz, IH, aryl), 7.9 (dd, J=1.9Hz, IH, aryl), 7.46 (d, J=8.6Hz, IH, 5-pyridyl), 7.38(dd, J=1.9Hz, IH, aryl), 7.22 (d, J=8.6Hz, IH, 4-pyridyl), 7.12 (d, J=8.6Hz, 2H, phenyl), 7.07 (d, J=15.7Hz, IH, olefin), 6.82 (d, J=8.6Hz, 2H, phenyl), 6.58 (s, IH, NH), 5.16 (s, 2H, CH2-O), 4.04 (t, J=6.5Hz, 2H, 0-CH2), 3.92 (s, 3H, methyl ester), 3.82 (s, 3H, methyl ester), 3.78 (s, 3H, OMe), 2.58 (t, J=7.6Hz, 2H, benzylic), 1.88 (m, 2H, CH2), 1.55 (s, 9H, ^butyl), 1.46 (m, 10H, aliphatic); MS (CI): 677 (M+H).
11 (d) 5-Carboxymethyl-3-ri-oxa-2-r2-(E-2-carboxymeth ylethenyl)-3-(8-(4- methoxyphenyl)octyloxy)-6-pyridvnethynaniline. 2-^-2-Carboxymethylethenyl)-3-[8- (4-meΛoxy^henyl)octyloxy]-6-[(3-amino-5-carboxymethyl)phenoxymethyl]pyridine tøutylcarbamate (200mg, 0.29mmol) was dissolved in dry CH2CI2 (3.0mL) under an argon atmosphere and cooled to 0 °C. Anisole (0.05mL, 0.46mmol) was added followed by trifluoroacetic acid (0.3mL). The reaction was stirred for 30 minutes at 0°C and then for 3.5 hours at room temperature. The reaction was quenched with aqueous NaHCO3. The product was extracted into CH2CI2 and the organic extracts were washed with brine and dried (MgSO4). Purification by flash column chromatography (silica, 25% EtOAc in hexane) gave a colorless oil: -*H NMR (250MHz, CDCI3) δ 8.09 (d, J=15.7Hz, IH, olefin), 7.44 (d, J=8.6Hz, IH, 5-pyridyl), 7.17 (d, J=8.6Hz, IH, 4- pyridyl), 7.08 (m, 3H, aryl), 7.05 (d, J=15.7Hz, IH, olefin), 6.96 (dd, J=1.9Hz, IH, aryl), 6.88 (d, J=8.6Hz, 2H, phenyl), 6.49 (dd, J=1.9Hz, IH, aryl), 5.12 (s, 2H, CH2- O), 4.04 (t, J=6.5Hz, 2H, O-CH2), 3.92 (s, 3H, methyl ester), 3.82 (s, 3H, methyl ester), 3.78 (s, 3H, OMe), 2.54 (t, J=7.6Hz, 2H, benzylic), 1.88 (m, 2H, CH2), 1.62 (m, 2H, CH2), 1.40 (m, 8H, aliphatic); Analysis calcd for C33H40N2O7 • 1/2 H2O: C, 67.67; H, 7.06; N, 4.78; found: C, 67.42; H, 6.96; N, 4.69; MS (CI): 577 (M+H).
11(e) 5-Carboxy-3-ri-oxa-2-r2-(E-2-carboxyethenyl)-3-(8-(4- methoxyphenyI)octyloxy)-6-pyridvnethyn aniline, dilithium salt. 5-Carboxymethyl-3-[l-oxa-2-[2-(E-2-carboxymethylethenyl)-3-(8-(4- methoxyphenyI)octyloxy)-6-pyridyl]ethyl]aniline (120mg, 0.208mmol) was dissolved in THF ( OmL) and MeOH (0.5mL) and treated with 1.0M LiOH (0.5mL, 0.5mmol). The reaction was stirred under an argon atmosphere for 16 hours. The solvent was evaporated and the product purified by Reversed Phased MPLC (RP-18 silica, H2O- MeOH gradient). Lyophilization yielded a colorless amorphous solid: JH NMR (250MHz, d4-MeOH) δ 7.80 (d, J=15.7Hz, IH, olefin), 7.42 (d, J=8.6Hz, IH, 5- pyridyl), 7.38 (d, J=8.6Hz, IH, 4-pyridyl), 7.06 (d, J=15.7Hz, IH, olefin), 7.05 (d, J=8.6Hz, 2H, phenyl), 6.98 (dd, J=l.9Hz, IH, aryl), 6.92 (dd, J=1.9Hz, IH, aryl), 6.80 (d, J=8.6Hz, 2H, phenyl), 6.47 (dd, J=1.9Hz, IH, aryl), 5.11 (s, 2H, CH2-0), 4.05 (t, J=6.5Hz, 2H, 0-CH2), 3.74 (s, 3H, OMe), 2.52 (t, J=7.6Hz, 2H, benzylic), 1.85 (m, 2H, CH2), 1.57 (m, 4H, aliphatic), 1.36 (m, 6H, aliphatic); Analysis calcd for C3iH34N205Li2 • 21/5 H20: C, 58.04; H, 6.70; N, 4.36; found: C, 57.87; H, 6.34; N, 4.22; MS (FAB): 561 (M+H).
Example 12
3-π-Thia-2-r2-(E-2-carboxyethenyl)-3-(8-(4-methoxyρhenyl)octyloxy)-6- pyridyllethyllaniline. lithium salt
12(a) 3-ri-Thia-2-r2-(E-2-carboxymethylethenyl)-3-(8-(4-methoxy-phenyl)octyloxy)- 6-pyridvnethyllaniline. To a cooled (0° C) solution of SOCI2 (0.26mL, 3.5mmoI) in dry toluene (lmL) under an argon atmosphere was added a solution of 2-(E-2- carboxymethylethenyl)-3-[8-(4-methoxyphenyl)octyloxy]-6-hydroxymethylpyridine (150mg, 0.35mmol) in toluene (2.5mL). After 5 minutes the cooling bath was removed and the reaction was stirred for 2 hours at room temperature. The toluene and excess
SOCI2 were evaporated. The crude product was dissolved in dry DMF (lmL) and added to a solution of sodium 3-aminothiophenoxide, prepared from 3-aminothiophenol (0.09mL, 0.84mmol; Aldrich) and NaH (34mg, 0.084mmol; 60% in mineral oil) in DMF (2mL), under an argon atmosphere. The reaction was stirred at room temperature for 3 hours. The reaction was diluted with EtOAc and washed with H2O and brine and dried
(MgS04). Purification by flash column chromatography (silica, 30% EtOAc in hexane) gave a colorless solid: --H NMR (250MHz, CDCI3) δ 8.06 (d, J=15.7Hz, IH, olefin), 7.27 (d, J=8.6Hz, IH, 5-pyridyl), 7.08 (m, 5H, 4-pyridyl, 5'-phenyl, olefin, phenyl), 6.81 (d, J=8.6Hz, 2H, phenyl), 6.74 (m, 2H, 2',4'-phenyl), 6.46 (ddd, J=8.0, 1.9Hz, IH, 6'-phenyl), 4.20 (s, 2H, CH2-S), 3.96 (t, J=6.5Hz, 2H, O-CH2), 3.81 (s, 3H, methyl ester), 3.78 (s, 3H, OMe), 3.65 (broad singlet, 2H, NH2), 2.55 (t, J=7.6Hz, 2H, benzylic), 1.83 (m, 2H, CH2), 1.60 (m, 2H, CH2), 1.45 ( , 2H, CH2), 1.35 (m, 6H, aliphatic); Analysis calcd for C31H38N2O4S • 1/4 H2O: C, 69.06; H, 7.20; N, 5.20; found: C, 69.02; H, 7.16; N, 5.21; MS (CI): 535 (M+H); mp 57-60 < C.
12(b) 3-ri-Thia-2-r2-(E-2-carboxyethenyl)-3-(8-(4-methoxyphenyl)octyloxy)-6- pyridyllethyllaniline. lithium salt. 3-[l-Thia-2-[2-(E-2-carboxymethylethenyl)-3-(8-(4- methoxyphenyl)octyloxy)-6-pyridyl]ethyl]aniline (75mg, 0.14mmol) was dissolved in THF (0.56mL) and MeOH (0.28mL) and treated with 1.0M LiOH (0.28mL, 0.28mmol). The reaction was stirred under an argon atmosphere for 6 hours. The solvent was evaporated and the product purified by Reversed Phased MPLC (RP- 18 silica, H2O- MeOH gradient). Lyophilization yielded a colorless amorphous solid: ]H NMR (250MHz, d -MeOH) δ 7.76 (d, J=15.7Hz, IH, olefin), 7.25 (d, J=8.6Hz, IH, 5- pyridyl), 7.24 (d, J=8.6Hz, IH, 4-pyridyl), 7.09 (<J, J=8.6Hz, 2H, phenyl), 7.04 (d, J=15.7Hz, IH, olefin), 6.97 (dd, J=8.0Hz, IH, 5'-phenyl), 6.80 (d, J=8.6Hz, 2H, phenyl), 6.72 (dd, J=1.9Hz, IH, 2'-phenyl), 6.67 (ddd, J=8.0, 1.9Hz, IH, 4'-phenyl), 6.51 (ddd, J=8.0, 1.9Hz, IH, 6'-phenyl), 4.16 (s, 2H, CH2-S), 4.00 (t, J=6.5Hz, 2H, O-CH2), 3.74 (s, 3H, OMe), 2.52 (t, J=7.6Hz, 2H, benzylic), 1.80 (m, 2H, CH2), 1.49 (m, 4H, aliphatic), 1.33 (m, 6H, aliphatic); Analysis calcd for C3θH3sN2θ4SLi • 5/2 H2O: C, 63.03; H, 7.05; N, 4.90; found: C, 62.67; H, 6.72; N, 4.72; MS (FAB): 527 (M+H), 521 (M+H; free acid).
Proceeding in a similar manner, but substituting the appropriate intermediates for those indicated here, and using chemistry well known in the art, the following compounds were prepared:
3-[l-thia-2-[2-(E-2-carboxyethenyl)-3-(4-(4-methoxyphenyl)butyloxy)-6- pyridyl]ethyl]aniline, lithium salt;
Colorless amorphous solid: *H NMR (360MHz, d6-DMSO) δ 7.43 (d, J=15.7Hz, IH, olefin), 7.33 (d, J=8.6Hz, IH, pyridyl), 7.23 (d, J=8.6Hz, IH, pyridyl), 7.13 (d, J=8.6Hz, 2H, phenyl), 6.92 (dd, J=7.8Hz, IH, 5'-phenyl), 6.86 (d, J=15.7Hz, IH, olefin), 6.82 (d, J=8.6Hz, 2H, phenyl), 6.61 (s, IH, 2'-phenyl), 6.51 (d, J=7.8Hz, IH, 4'-phenyl), 6.37 (d, J=7.8Hz, IH, 6'-phenyl), 5.10 (broad singlet, 2H, NH2), 4.16 (s, 2H, CH2-S), 4.01 (t, J=6.5Hz, 2H, 0-CH2), 3.72 (s, 3H, OMe), 2.58 (t, J=7.6Hz, 2H, benzylic), 1.71 (m, 4H, aliphatic); Analysis calcd for C26H27N204SLi - l3/4H20: C, 62.20; H, 6.12; N, 5.58; found: C, 62.23; H, 5.82; N, 5.44; MS (ES+): 464.3 (M+; free acid); (ES-): 463.0 (M-H; free acid);
3-[l-thia-2-[2-(E-2-carboxyethenyl)-3-(8-(4-trifluoromethylphenyl)octyloxy)-6- pyridyl]ethyl]aniline, lithium salt;
Colorless amorphous solid: JH NMR (250MHz, d4-MeOH) δ 7.78 (d, J=15.7Hz, IH, olefin), 7.53 (d, J=8.6Hz, 2H, phenyl), 7.34 (d, J=8.6Hz, 2H, phenyl), 7.25 (d, J=8.6Hz, IH, pyridyl), 7.24 (d, J=8.6Hz, IH, pyridyl), 7.04 (d, J=15.7Hz, IH, olefin), 6.97 (dd, J=8.0Hz, IH, 5*-phenyl), 6.72 (dd, J=1.9Hz, IH, 2'-phenyl), 6.67 (ddd, J=8.0, 1.9Hz, IH, 4*-phenyl), 6.51 (ddd, J=8.0, 1.9Hz, IH, 6'-phenyl), 4.16 (s, 2H, CH2-S), 4.01 (t, J=6.5Hz, 2H, 0-CH2), 2.68 (t, J=7.6Hz, 2H, benzylic), 1.85 (m, 2H, CH2), 1.68 (m, 2H, CH2), 1.50 (m, 2H, CH2), 1.37 (m, 6H, aliphatic); Analysis calcd for C3θH32F3N2θ3SLi • I 2 H2O: C, 60.91; H, 5.96; N, 4.74; found: C, 60.53; H, 5.56; N, 4.51; MS (ES+): 559.0 (M+H; free acid), (ES-): 557.0 (M-H; free acid); and
3-[l-thia-2-[2-(E-2-carboxyethenyl)-3-(8-phenyl)octyloxy-6- py_ddyl]ethyl]aniline, lithium salt
Colorless amorphous solid: IH NMR (250MHz, d4-MeOH) δ 7.72 (d, J=15.7Hz, IH, olefin), 7.20 (m, 7H, pyridyl, phenyl), 7.04 (d, J=15.7Hz, IH, olefin), 6.97 (dd, J=8.0Hz, IH, 5-phenyl), 6.72 (dd, J=1.9Hz, IH, 2'-phenyl), 6.67 (ddd, J=8.0, 1.9Hz, IH, 4'-phenyl), d.51 (ddd, J=8.0. 1.9Hz, IH, 6'-phenyl), 4.16 (s, 2H, CH2-S), 4.02 (t, J=6.5Hz, 2H, O-CH2), 2.52 (t, J=7.6Hz, 2H, benzylic), 1.83 (m, 2H, CH2), 1.59 (m, 2H, CH2), 1.50 (m, 2H, CH2), 1.37 (m, 6H, aliphatic); MS (ES+): 491.0 (M+H; free acid), (ES-): 489.0 (M-H; free acid).
Example 13
3-ll-Oxythia-2-r2-(E-2-carboxyethenyl)-3-(8-(4-methoxyphenyl)octyloxy)-6- pyridyπethyllaniline. lithium salt
13(a) 3-n-Oxythia-2-r2-(E-2-carboxymethylethenyl)-3-(8-(4- methoxyphenyl)octyloxy)-6-pyridyl1ethyl1aniline. To a cooled (-15° C) solution of 3-[l- thia-2-[2-(E-2-carboxymethylethenyl)-3-(8-(4-methoxyphenyl)octyloxy)-6- pyridyl]ethyl]aniline (150mg, 0.28mmol) in CH2CI2 (4mL) under an argon atmosphere was added 85% mCPBA (63mg, 0.31mmol) in two portions over 15 minutes. The reaction was maintained at -15 °C for a total of 40 minutes. The reaction was quenched with aq NaHCθ3 solution and the product extracted into EtOAc. The organic extract was washed with H2O and brine and dried (MgS04). The product was recrystallized from EtOAc - hexane to give a colorless solid: lH NMR (250MHz, CDCI3) δ 8.03 (d, J=15.7Hz, IH, olefin), 7.22 (dd, J=8.0Hz, IH, 5'-phenyl), 7.15 (m, 2H, 4,5-pyridyl),
7.11 (d, J=8.6Hz, 2H, phenyl), 6.92 (m, IH, 2'-phenyl), 6.85 (d, J=15.7Hz, IH, olefin), 6.80 (m, 3H, phenyl, 4'-phenyl), 6.73 (ddd, J=8.0, 1.9Hz, IH, 6'-phenyl),
4.12 (s, 2H, CH2-S), 4.00 (t, J=6.5Hz, 2H, O-CH2), 3.99 (broad singlet, 2H, NH2), 3.82 (s, 3H, methyl ester), 3.79 (s, 3H, OMe), 2.56 (t, J=7.6Hz, 2H, benzylic), 1.85 (m, 2H, CH2), 1.60 (m, 2H, CH2), 1.48 (m, 2H, CH2), 1.36 (m, 6H, aliphatic); Analysis calcd for C31H38N2O5S: C, 67.61; H, 6.95; N, 5.09; found: C, 67.73; H, 7.17; N, 4.82; MS (CI): 551 (M+H); mp 109-111 <>C.
13(b) 3-ri-Oxythia-2-r2-(E-2-carboxyethenyl)-3-(8-(4-methoxy-phenyl)octyloxy)-6- pyridvnethy 11 aniline, lithium salt. 3-[l-Oxythia-2-[2-(E-2-carboxymethylethenyl)-3-(8- (4-methoxyphenyl)octyloxy)-6-pyridyl]ethyl]aniline (109mg, 0.198mmol) was dissolved in THF (0.80mL) and MeOH (0.40mL) and treated with 1.0M LiOH (0.40mL,
0.40mmol). The reaction was stirred under an argon atmosphere for 6 hours. The solvent was evaporated and the product purified by Reversed Phased MPLC (RP-18 silica, H2θ-MeOH gradient). Lyophilization yielded a colorless amorphous solid: --H NMR (250MHz, d4-MeOH) δ 7.75 (d, J=15.7Hz, IH, olefin), 7.28 (d, J=8.6Hz, IH, 5-pyridyl), 7.15 (dd, J=8.0Hz, IH, 5'-phenyl), 7.03 (m, 4H, 4-pyridyl, olefin, phenyl), 6.86 (dd, J=1.9Hz, IH, 2'-phenyl), 6.75 (m, 4H, 4\6'-phenyl, phenyl), 4.20 (q, J=13Hz, 2H, CH2-S), 4.02 (t, J=6.5Hz, 2H, O-CH2), 3.72 (s, 3H, OMe), 2.52 (t, J=7.6Hz, 2H, benzylic), 1.85 (m, 2H, CH2), 1.53 (m, 4H, aliphatic), 1.37 (m, 6H, aliphatic); Analysis calcd for C3oH35N2θ5SLi • 2 H2O: C, 62.27; H, 6.79; N, 4.84; found: C, 62.13; H, 6.89; N, 5.01; MS (FAB): 543 (M+H), 537 (M+H; free acid). Proceeding in a similar manner, there was made 3-[l-oxythia-2-[2-(E-2-carboxyethenyl)-3-(4-(4-methoxyphenyl))-6- pyridyl]ethyl]aniline, lithium salt;
Colorless amorphous solid: -*H NMR (250MHz, d -MeOH) δ 7.75 (d, J=15.7Hz, IH, olefin), 7.28 (d, J=8.6Hz, IH, pyridyl), 7.20 (d, J=8.6Hz, IH, pyridyl), 7.12 (d, J=8.6Hz, 2H, phenyl), 7.06 (s, IH, 2'-phenyl), 7.02 (d, J=7.8Hz, IH, 4'-phenyl), 6.81 (m, 5H, 5',6'-phenyl, olefin, phenyl), 4.20 (q, J=13Hz, 2H, CH2-S(O)), 4.02 (t, I=6.5Hz, 2H, O-CH2), 3.72 (s, 3H, OMe), 2.62 (t, J=7.6Hz, 2H, benzyUc), 1.80 (m, 4H, aliphatic); Analysis calcd for C26H27N2θsSLi • 25/s H20: C, 58.50; H, 6.09; N, 5.25; found: C, 58.18; H, 5.67; N, 5.12; MS (ES+): 481.2 (M+H; free acid), (ES-): 479.0 (M-H; free acid).
3-[l-oxythia-2-[2-(E-2-carboxyethenyl)-3-(8-(4-trifluoromethylphenyl)octyloxy)- 6-pyridyl]ethyl]aniline, lithium salt;
Colorless amorphous solid: *H NMR (250MHz, d4-MeOH) δ 7.75 (d, J=15.7Hz, IH, olefin), 7.53 (d, J=8.6Hz, 2H, phenyl), 7.34 (d, J=8.6Hz, 2H, phenyl), 7.24 (d, J=8.6Hz, IH, pyridyl), 7.18 (d, J=8.6Hz, IH, pyridyl), 7.04 (d, J=8.0Hz, IH, 4'-phenyl), 7.02 (d, J=15.7Hz, IH, olefin), 6.89 (s, IH, 2'-phenyl), 6.78 (m, 2H, 5',6'-phenyl), 4.20 (q, J=13Hz, 2H, CH2-S(O)), 4.02 (t, J=6.5Hz, 2H, O-CH2), 2.52 (t, J=7.6Hz, 2H, benzylic), 1.88 (m, 2H, CH2), 1.69 (m, 2H, CH2), 1.50 (m, 2H, CH2), 1.39 (m, 6H, aliphatic); Analysis calcd for C3oH32F3N2U4SLi • I-V4 H2O: C, 58.87; H, 5.85; N, 4.58; found: C, 58.92; H, 5.55; N, 4.48; MS (ES+): 575.2 (M+H; free acid); 3-[l-oxythia-2-[2-(E-2-carboxyethenyl)-3-(8-phenyl)octyloxy-6- pyridyl]ethyl]aniline, lithium salt;
Colorless amorphous solid: --H NMR (250MHz, d4-MeOH) δ 7.75 (d, J=15.7Hz, IH, olefin), 7.20 (m, 7H, pyridyl, phenyl), 7.04 (d, J=8.0Hz, IH, 4'- phenyl), 7.02 (d, J=15.7Hz, IH, olefin), 6.89 (s, IH, 2'-phenyl), 6.78 (m, 2H, 5',6'- phenyl), 4.20 (q, J=13Hz, 2H, CH2-S(O)), 4.02 (t, J=6.5Hz, 2H, 0-CH2), 2.52 (t, J=7.6Hz, 2H, benzylic), 1.88 (m, 2H, CH2), 1.69 (m, 2H, CH2), 1.50 (m, 2H, CH2), 1.39 (m, 6H, aliphatic); Analysis calcd for C29H33N2U4SLi • 1 H2O: C, 65.65; H, 6.65; N, 5.28; found: C, 65.62; H, 6.39; N, 4.90; MS (ES+): 507.0 (M+H; free acid), (ES-): 505.0 (M-H; free acid); 3-[l-oxythia-2-[2-φ-2-carboxyethenyl)-3-(8-(4-fluorophenyl)octyloxy)-6- pyridyljethyljaniline, lithium salt;
Colorless amorphous solid: -*H NMR (250MHz, d4-MeOH) δ 7.75 (d,
J=15.7Hz, IH, olefin), 7.30 - 6.90 (multiplet, 8H, pyridyl, phenyl, olefin, 4'-phenyl), 6.89 (s, IH, 2-phenyl), 6.78 (m, 2H, 5',6'-phenyl), 4.20 (q, J=13Hz, 2H, CH2- S(O)), 4.02 (t, J=6.5Hz, 2H, O-CH2), 2.52 (t, J=7.6Hz, 2H, benzylic), 1.88 (m, 2H, CH2), 1.59 (m, 2H, CH2), 1.50 (m, 2H, CH2), 1.39 (m, 6H, aliphatic); MS (ES+): 525.2 (M+H; free acid), (ES-): 523.0 (M-H; free acid).
Example 14 3-ri-Dioxythia-2-12-(E-2-carboxyethenyl)-3-(8-(4-methoxyphenyl)octyloxy)-6- pyridyllethyllaniline. lithium salt
14(a) 3-ri-Dioxythia-2-r2-(E-2-carboxymethylethenyl)-3-(8-(4- methoxyphenyl)octyloxy)-6-pyridvnethyl1aniline. To a cooled (0 °C) solution of 3- - thia-2-[2-(E-2-carboxymethylethenyl)-3-(8-(4-methoxyphenyl)octyloxy)-6- pyridyl]ethyl]aniline (75mg, 0.14mmol) in CH2CI2 (3mL) under an argon atmosphere was added 85% mCPBA (63mg, 0.308mmol). After 1 hour the reaction was quenched with aq NaHCθ3 solution and the product extracted into EtOAc. The organic extracts were washed with H2O and brine and dried (MgSO4). Purification by flash column chromatography (silica, 50% EtOAc in hexane) gave a colorless solid: -Η NMR (250MHz, CDCI3) δ 7.90 (d, J=15.7Hz, IH, olefin), 7.39 (d, J=8.6Hz, IH, 5-pyridyl), 7.21 (t, J=8.0Hz, IH, 5'-phenyl), 7.19 (d, J=8.6Hz, IH, 4-pyridyl), 7.11 (d, J=8.6Hz, 2H, phenyl), 7.03 (m, 2H, 2',4'-phenyl), 6.86 (m, IH, 6'-phenyl), 6.81 (d, J=8.6Hz, 2H, phenyl), 6.54 (d, J=15.7Hz, IH, olefin), 4.46 (s, 2H, CH2-S), 3.99 (t, J=6.5Hz, 2H, O-CH2), 3.86 (broad singlet, 2H, NH2), 3.79 (s, 3H, methyl ester), 3.78 (s, 3H, OMe), 2.55 (t, J=7.6Hz, 2H, benzylic), 1.82 (m, 2H, CH2), 1.60 (m, 2H, CH2), 1.45 (m, 2H, CH2), 1.35 (m, 6H, aliphatic); Analysis calcd for C31H38N2O6S • 1/3 mol C6H14: C, 66.57; H, 7.22; N, 4.70; found: C, 66.45; H, 7.24; N, 4.89; MS (CI): 567 (M+H); mp 92-95 °C.
14(b) 3-ri-Dioxythia-2-r2-(E-2-carboxyethenyl)-3-(8-(4-methoxyphenyl)octyloxy)-6- pyridyllethvnaniline. lithium salt. 3-[l-Dioxythia-2-[2-(E-2-carboxymethylethenyl)-3-(8-(4- methoxyphenyl)octyloxy)-6-pyridyl]ethyl]aniline (51mg, 0.09mmol) was dissolved in THF (0.30mL) and MeOH (0.18mL) and treated with 1.0M LiOH (0.18mL, 0.18mmol). The reaction was stirred under an argon atmosphere for 6 hours. The solvent was evaporated and the product purified by Reversed Phased MPLC (RP-18 silica, H2O- MeOH gradient). Lyophilization yielded a colorless amorphous solid: -H NMR
(250MHz, d4-MeOH) δ 7.65 (d, J=15.7Hz, IH, olefin), 7.26 (d, J=8.6Hz, IH, 5- . . pyridyl), 7.24 (d, J=8.6Hz, IH, 4-pyridyl), 7.17 (dd, J=8.0Hz, IH, 5'-phenyl), 7.06 (d, J=8.6Hz, 2H, phenyl), 6.97 (dd, J=1.9Hz, IH, 2'-phenyl), 6.85 (m, 2H, 4',6'- phenyl), 6.78 (d, J=8.6Hz, 2H, phenyl), 6.75 (d, J=15.7Hz, IH, olefin), 4.55 (s,-2H, CH2-S), 4.04 (t, J=6.5Hz, 2H, 0-CH2), 3.74 (s, 3H, OMe), 2.52 (t, J=7.6Hz, 2H, benzylic), 1.86 (m, 2H, CH2), 1.55 (m, 4H, aliphatic), 1.37 (m, 6H, aliphatic); MS (FAB): 559 (M+H), 553 (M+H; free acid). - 5
Example 15 3-ri-Thia-2-r2-(E-2-carboxyethenyl)-3-(8-(4-methoxyρhenyl)octyloxy)-6-pyridvnethvn-
N.N-dimethylaniline. lithium salt
10 15(a) 3-ri-Thia-2-r2-(E-2-carboxymethylethenyl)-3-(8-(4-methoxyphenyl)octyloxy)-6- ρyridyllethyll-N.N-dimethylaniline. To a solution of 3-[l-thia-2-[2-(E-2- ca_rboxymethylethenyl)-3-(8-(4-methoxyphenyl)octyloxy)-6-pyridyl]ethyl]aniline (75mg, 0.14mmol) in acetonitrile (lmL) was added formaldehyde (0.25mL, 3.1mmol; 37% aqueous solution) and NaCNBH3 (50mg, 0.80mmol). The reaction was stirred at room
15 temperature for 15 minutes. The reaction solution was made neutral by the addition of glacial acetic acid and stirred for an additional 2 hours. The reaction was diluted with H2O and the product extracted into EtOAc. The organic layer was washed with H2O and brine and dried (MgSC»4). Purification by flash column chromatography (silica, 20% EtOAc in hexane) gave a pale yellow oil: H NMR (250MHz, CDCI3) δ 8.06 (d, 0 J=15.7Hz, IH, olefin), 7.35 (d, J=8.6Hz, IH, 5-pyridyl), 7.08 (m, 4H, 4-pyridyl, 5'- phenyl, phenyl), 7.04 (d, J=15.7Hz, IH, olefin), 6.83 (d, J=8.6Hz, 2H, phenyl), 6.74 (m, 2H, 2',4l-phenyl), 6.52 (dd, J=8.0, 1.9Hz, IH, 6'-phenyl), 4.23 (s, 2H, CH2-S), 4.00 (t, J=6.5Hz, 2H, 0-CH2), 3.82 (s, 3H, methyl ester), 3.78 (s, 3H, OMe), 2.89 (s, 6H, Me2), 2.55 (t, J=7.6Hz, 2H, benzyUc), 1.83 (m, 2H, CH2), 1.60 (m, 2H, CH2), 5 1.45 (m, 2H, CH2), 1.35 (m, 6H, aliphatic); MS (CI): 563 (M+H).
15(b) 3-ri-Thia-2-r2-(E-2-carboxyethenyl)-3-(8-(4-methoxyphenyl)octyloxy)-6- pyridvnethyll-N.N-dimethvIaniline. lithium salt. 3-[l-Thia-2-[2-(E-2- carboxymethylethenyl)-3-(8-(4-methoxyphenyl)octyloxy)-6-pyridyl]ethyl]-N,N- 0 dimethylaniline (lOOmg, 0.178mmol) was dissolved in THF (0.72mL) and MeOH
(0.36mL) and treated with 1.0M LiOH (0.36mL, 0.36mmol). The reaction was stirred under an argon atmosphere for 6 hours. The solvent was evaporated and the product purified by Reversed Phased MPLC (RP-18 siUca, H2θ-MeOH gradient). Lyophilization yielded a colorless amorphous soUd: -*H NMR (250MHz, d4-MeOH) δ 5 7.78 (d, J=15.7Hz, IH, olefin), 7.25 (s, 2H, 4,5-pyridyI), 7.07 (m, 4H, phenyl, olefin, 5*-phenyl), , 6.80 (d, J=8.6Hz, 2H, phenyl), 6.72 (dd, J=1.9Hz, IH, 2'-phenyl), 6.67 (ddd, J=8.0, 1.9Hz, IH, 4*-phenyl), 6.55 (ddd, J=8.0, 1.9Hz, IH, 6'-phenyl), 4.20 (s, 2H, CH2-S), 4.00 (t, J=6.5Hz, 2H, 0-CH2), 3.76 (s, 3H, OMe), 2.85 (s, 6H, Me2), 2.52 (t, J=7.6Hz, 2H, benzyUc), 1.85 (m, 2H, CH2), 1.55 (m, 4H, aliphatic), 1.33 (m, 6H, aliphatic); Analysis calcd for C32H39N2O4SLi . 5/4 H20: C, 66.59; H, 7.25; N, 4.85; found: C, 66.50; H, 7.01; N, 4.75; MS (FAB): 555.2 (M+H).
Example 16 3-ri-Oxythia-2-r2-(E-2-carboxyethenyl)-3-(8-(4-methoxyphenyl)octyloxy)-6- pyridyllethvn-N.N-dimethylaniline. lithium salt
16(a) 3-ri-Oxythia-2-r2-(E-2-carboxymethylethenyl)-3-(8-(4- methoxyphenyl)octyloxy)-6-pyridyllethvn-N.N-dimethylaniline. Prepared from 3-[l- thia-2-[2-(E-2-carboxymethylethenyl)-3-(8-(4-methoxyphenyl)octyloxy)-6- pyridyl]ethyl]-N,N-dimethylaniline according to the procedure described for the preparation of 3-[l-oxythia-2-[2-(E-2-carboxymethylethenyl)-3-(8-(4- methoxyphenyl)octyloxy)-6-pyridyl]ethyl]aniUne: *H NMR (250MHz, CDCI3) δ 8.01 (d, J=15.7Hz, IH, olefin), 7.22 (dd, J=8.0Hz, IH, 5'-phenyl), 7.17 (d, J=8.6Hz, IH, 5-pyridyl), 7.13 (d, J=8.6Hz, IH, 4-pyridyl), 6.80 (m, 6H, phenyl, 2',4',6'-phenyl, olefin), 4.12 (s, 2H, CH2-S), 4.00 (t, J=6.5Hz, 2H, O-CH2), 3.82 (s, 3H, methyl ester), 3.79 (s, 3H, OMe), 2.95 (s, 6H, Me2), 2.55 (t, J=7.6Hz, 2H, benzylic), 1.85 (m, 2H, CH2), 1.60 (m, 2H, CH2), 1.48 (m, 2H, CH2), 1.36 (m, 6H, aliphatic); MS (CI): 579.2 (M+H).
16(b) 3-ri-Oxythia-2-r2-(E-2-carboxyethenyl)-3-(8-(4-methoxyphenyl)octyloxy)-6- pyridyllethvn-N.N-dimethylaniline. lithium salt Prepared from 3-[l -oxythia-2-[2-(E-2- carboxymethyl-ethenyl)-3-(8-(4-methoxyphenyl)octyloxy)-6-pyridyl]ethyl]-N,N- dimethylaniline according to the procedure described for the preparation of 3- [ 1 -oxy thia- 2-[2-(E-2-carboxyethenyl)-3-(8-(4-methoxyphenyl)octyloxy)-6-pyridyl]ethyl]aniUne, lithium salt Colorless amorphous solid: *H NMR (250MHz, d4-MeOH) δ 7.75 (d, J=15.7Hz, IH, olefin), 7.31 (dd, J=8.0Hz, IH, 5'-phenyl), 7.24 (d, J=8.6Hz, IH, 5- pyridyl), 7.03 (m, 3H, 4-pyridyl, phenyl), 6.95 (d, J=15.7Hz, IH, olefin), 6.80 (m, 4H, aiyl), 6.70 (m, IH, aryl), 4.21 (q, J=13Hz, 2H, CH2-S), 4.02 (t, J=6.5Hz, 2H, • 0-CH2), 3.74 (s, 3H, OMe), 2.84 (s, 6H, Me2), 2.56 (t, J=7.6Hz, 2H, benzylic), 1.85 (m, 2H, CH2), 1.53 (m, 4H, aliphatic), 1.37 (m, 6H, aliphatic); MS (FAB): 571.3 (M+H). Example 17 Preparation of 3-rN-r2-r2-(E-2-CarboxyethenvI)-3-(8-(4-methoxyphenyl)octyloxy)-6- pyridvHmethvHlaminobenzoic acid, dilithium salt The captioned compound was prepared according to the method set out in Scheme 5 above by reacting the appropriate r-BOC-protected aminobenzoic acid with 2-QΞ-2- carboxymethyIethenyl)-3-dodecyloxy-6-(chloromethyl)-pyridine hydrochloride or a similar intermediate, the captioned compound was prepared.
In a similar manner 3-[N-[2-[2-(E-2-carix)xyethenyI)-3-(8-(4- methoxyphenyl)octyloxy)-6-pyridyl]-methyl]]aminobenzoic acid, N-oxide, dilithium salt and3-[N-[2-[2-(E-2-carboxyethenyl)-3-(8-(4-methoxyphenyl)-octyloxy)-6- pyridyl]methyl]-N-methyl] aminobenzoic acid, diUthium salt were made.
Example 18 4-r2-Thia-3-r2-(E-2-carboxyethenyl)-3-r8-(4-methoxyphenyl)octyloxy1-6- pyridynpropynbenzoic acid, dilithium salt
18(a). 3-Hydroxy-6-methyl-2-pyridine carboxaldehyde. 2,6-Lutidine-a2,3-diol (15g, 107.8mmol; Aldrich) was suspended in dry CH2CI2 (200mL) and treated with Mnθ2 (47g, 539mmoI). The reaction was stirred at room temperature for 6 hours. The reaction mixture was filtered through a pad of CeUte and the solvent was evaporated. The crude aldehyde was obtained as a tan soUd and was used directly for the next step: 1H NMR
(250MHz, CDCI3) δ 10.65 (s, IH, OH), 10.30 (s, IH, aldehyde), 7.30 (m, 2H, 4,5- pyridyl), 2.55 (s, 3H, methyl).
18(b). 3-r8-(4-Methoxyphenyl)octyloxy1-6-methyl-2-pyridine carboxaldehyde. To a solution of l-iodo-8-(4-methoxyphenyl)octane (16.3g, 47.1mmol) in dry DMF (45mL) under an argon atmosphere was added 3-hydroxy-6-methyl-2-pyridine carboxaldehyde (7.7g, 56.2mmoI) and anhydrous K2CO3 (32g, 235mmol). The reaction was vigorously stirred at 90°C for 1.5 hours. Upon cooling to room temperature the reaction was diluted with EtOAc and washed with H2O, aq NH4CI, and brine and dried (MgS04). Evaporation provided crude aldehyde as a dark oil that was used without further purification.
18(c). 2-(E-2-Carboxymethylethenyl)-3-r8-(4-methoxyphenyl)-octyloxyl-6- methylpyridine. 3-[8-(4-Methoxyphenyl)octyloxy]-6-methyl-2-pyridine carboxaldehyde obtained above was dissolved in dry toluene (lOOmL) under an argon atmpsphere and treated with methyl (triphenylphosphoranyUdene)acetate (16g, 48riιmol). The reaction was heated for 1 hour at 50°C. Upon cooUng to room temperature the reaction was diluted with EtOAc and washed with H2O and brine and dried (MgSθ4). Purification by flash column chromatography (silica, 20% EtOAc in hexane) gave the product as a pale yellow oil: -Η NMR (250MHz, CDCI3) δ 8.07 (d, J=15.7Hz, IH, olefin), 7.10' (m, 4H, phenyl, 4,5-pyridyl), 7.07 (d, J=15.7Hz, IH, olefin), 6.81 (d, J=8.6Hz, 2H, phenyl), 3.97 (t, J=6.5Hz, 2H, O-CH2), 3.79 (s, 3H, OCH3), 3.78 (s, 3H, methyl ester), 2.54 (t, J=7.6Hz, 2H, benzylic), 2.48 (s, 3H, methyl), 1.85 (m, 2H, CH2), 1.60 (m, 2H, CH2), 1.37 (m, 8H, aliphatic); MS (CI): 412.3 (M+H).
18(d). 2-(E-2-Carboxymethylethenyl)-3-r8-(4-methoxyphenyl)-octyloxy1-6- methylpyridine N-oxide. 2-(E-2-Carboxymethyl-ethenyl)-3-[8-(4- methoxyphenyl)octyloxy]-6-methylpyridine (17. lg, 41.5mmol) was dissolved in dry CH2CI2 (105mL) and cooled to 0°C; 50% m-chlorperbenzoic acid (15.8g, 45.8mmol) was added in three portions over 10 minutes. The cooling bath was removed and the reaction was stirred for 15 hours at room temperature. The reaction was poured into aqueous NaHCθ3 and the product extracted into CH2CI2. The organic extract was washed with H2O and brine and dried (MgSO4). The crude product was obtained as a yellow solid and was used without further purification.
18(e). 2-(E-2-Carboxymethylethenyl)-3-r8-(4-methoxyphenyl)-octyIoxyl-6- hydroxymethylpyridine. 2-(E-2-Carboxymethyl-ethenyl)-3-[8-(4- methoxyphenyl)octyloxy]-6-methylpyridine N-oxide obtained above was suspended in dry DMF (130mL) and cooled to 0°C under an argon atmosphere. To this was slowly added trifluoroacetic anhydride (56mL, 400mmol). The reaction was maintained at 0°C for 20 minutes followed by 18 hours at room temperature. The reaction solution was slowly added to a solution of saturated aqueous Na2CO3 and stirred for 1 hour. The product was then extracted into EtOAc; the combined organic extracts were washed with H2O and brine and dried (MgS04). Purification by flash column chromatography (siUca, EtOAc:hexane:CH2Cl2, 30:20:50) gave a waxy solid: 1H NMR (250MHz, CDCI3) δ 8.08 (d, J=15.7Hz, IH, olefin), 7.23 (d, J=8.6Hz, IH, 5-pyridyl), 7.16 (d, J=8.6Hz, IH, 4-pyridyl), 7.09 (d, J=8.6Hz, 2H, phenyl), 7.03 (d, J=15.7Hz, IH, olefin), 6.82 (d, J=8.6Hz, 2H, phenyl), 4.69 (d, J=4.1Hz, 2H, CH2-OH), 4.01 (t, J=6.5Hz, 2H, O-CH2), 3.82 (s, 3H, OCH3), 3.78 (s, 3H, methyl ester), 3.62 (t, J=4.1Hz, IH, OH), 2.55 (t, J=7.6Hz, 2H, benzylic), 1.85 (m, 2H, CH2), 1.58 (m, 2H, CH2), 1.44 (m, 8H, aliphatic); MS (CI): 428.2 (M+H).
18(f) Methyl 4-r2-thia-3-r2-(E-2-carboxy-methylethenyl)-3-r8-(4- methoxyphenyl)octyloxyl-6-pyridyllpropynbenzoate. To a cooled (0°C) solution of
SOC12 (0.5 lmL, 7.0mmol) in dry toluene (2mL) under an argon atmosphere was added a solution of 2-(E-2-carboxymethylethenyl)-3-[8-(4-methoxyphenyl)octyloxy]-6- hydroxymethylpyridine (300mg, O Ommol) in toluene (5mL). After 5 minutes the cooling bath was removed and the reaction was stirred for 2 hours at room temperature. The toluene and excess SOCI2 were evaporated. To this was added dry DMF (2mL), methyl 4-mercaptomethylbenzoate (180mg, O mmol) [prepared from 4- mercaptomethylbenzoic acid (Bader) and methanoUc HCl], and anhydrous CS2CO3 (1.63g, 5.0mmol). The reaction was heated at 60°C under an atmosphere of argon for 2 hours. Upon cooUng to room temperature the reaction was dUuted with EtOAc and washed with H20, 10% NaOH, H2O, and brine and dried (MgSθ4). Purification by flash column chromatography (silica, 15% EtOAc in hexane) yielded a colorless waxy soUd: JH NMR (250MHz, CDCI3) δ 8.05 (d, J=15.8Hz, IH, olefin), 7.93 (d, J=8.6Hz, 2H, phenyl), 7.35 (d, J=8.6Hz, 2H, phenyl), 7.18 (d, J=8.6Hz, IH, pyridyl), 7.06 (d, J=8.6Hz, IH, pyridyl), 7.02 (d, J=8.6Hz, 2H, phenyl), 6.98 (d, J=15.8Hz, IH, olefin), 6.78 (d, J=8.6Hz, 2H, phenyl), 3.92 (t, J=6.5Hz, 2H, OCH2), 3.85 (s, 3H, methyl ester), 3.75 (s, 3H, OCH3), 3.72 (s, 3H, methyl ester), 3.64 (s, 2H, SCH2), 3.59 (s, 2H, SCH2), 2.49 (t, J=7.6Hz, 2H, benzylic), 1.78 (m, 2H, CH2), 1.40 (m, 10H, aliphatic); MS (CI): 592 (M+H).
18(g). 4-r2-Thia-3-r2-(E-2-carboxyethenyl)-3-r8-(4-methoxyphenyl)octyloxy1-6- pyridvnpropyllbenzoic acid, dilithium salt. Methyl 4-[2-thia-3-[2-(E-2- carboxymethyIethenyl)-3-[8-(4-methoxyphenyl)octyloxy]-6-pyridyl]propyl]benzoate (80mg, 0.13mmol) was dissolved in tetrahydrofuran (THF) (1.5mL) and MeOH
(1.5mL) and treated with l.OM LiOH (0.8mL, 0.8mmol). The reaction was stirred under an argon atmosphere for 20 hours. The solvent was evaporated and the product purified by Reversed Phased MPLC (RP-18 silica, H2θ-MeOH gradient). Lyophilization yielded a colorless amorphous solid: *H NMR (250MHz, d -MeOH) δ 7.87 (d, J=8.6Hz, 2H, phenyl), 7.79 (d, J=15.8Hz, IH, olefin), 7.34 (m, 3H, phenyl, pyridyl), 7.23 (d, J=8.6Hz, IH, pyridyl), 7.08 (d, J=15.8Hz, IH, olefin), 7.06 (d, J=8.6Hz, 2H, phenyl), 6.80 (d, J=8.6Hz, 2H, phenyl), 4.04 (t, J=6.5Hz, 2H, OCH2), 3.74 (s, 2H, SCH2), 3.73 (s, 3H, OCH3), 3.69 (s, 2H, SCH2), 2.55 (t, J=7.6Hz, 2H, benzylic), 1.87 (m, 2H, CH2), L50 (m, 10H, aliphatic); Analysis calcd for C32H35N06SLi2 • 3H20: C, 61.04; H, 6.56; N, 2.22; found: C, 60.96; H, 6.35; N, 2.39; MS (FAB): 576 (M+H), 582.3 (M+Li).
Example 19 4-r2-Qxythia-3-r2-(E-2-carboxyethenyl)-3-r8-(4-methoxyphenyl)octyloxy1-6- pyridyripropyπbenzoic acid, dilithium salt
19(a). Methyl 4-r2-oxythia-3-r2-(E-2-carboxymethylethenyl)-3-r8-(4- • meflιoxyphenyl)octyloxy1-6-pyridyllpropynbenzoate. Methyl 4-[2-thia-3-[2-(E-2- carix)xymethylethenyl)-3-[8-(4-methoxyphenyl)octyloxy]-6-pyridyl]propyl]benzoate (HOmg, 0.186mmol) was dissolved in dry CH2CI2 (4mL) under an argon atmosphere and cooled to -20°C. To this was added 85% m-chloroperoxybenzoic acid (36mg, O.lδmmol) in two portions 15 minutes apart. The reaction was stirred for 15 minutes at -20°C following the second addition and then quenched with 5% NaHCθ3. The product was extracted into CH2CI2 and the organic extracts were dried (MgSθ4). Purification by flash column chromatography (sUica, 50% EtOAc in hexane) gave a white solid: -1H NMR (250MHz, CDCI3) δ 8.10 (d, J=15.8Hz, IH, olefin), 8.07 (d, J=8.6Hz, 2H, phenyl), 7.50 (d, J=8.6Hz, 2H, phenyl), 7.28 (d, J=8.6Hz, IH, pyridyl), 7.20 (d, J=8.6Hz, IH, pyridyl), 7.12 (d, J=8.6Hz, 2H, phenyl), 7.07 (d, J=15.8Hz, IH, olefin), 6.83 (d, J=8.6Hz, 2H, phenyl), 4.19 (d, J=12.8Hz, IH, SCH), 4.12 (d, J=12.8Hz, IH, SCH), 4.04 (t, J=6.5Hz, 2H, OCH2), 3.94 (s, 3H, methyl ester), 3.92 (m, 2H, SCH2), 3.83 (s, 3H, OCH3), 3.79 (s, 3H, methyl ester), 2.56 (t, J=7.6Hz, 2H, benzylic), 1.87 (m, 2H, CH2), 1.40 (m, 10H, aliphatic); Analysis calcd for C34H41NO7S: C, 67.19; H, 6.80; N, 2.30; found: C, 66.80; H, 7.12; N, 2.25; MS (CI): 608 (M+H).
19(b). 4-r2-Oxythia-3-r2-(E-2-carboxyethenyl)-3-r8-(4-methoxyphenyl)octyloxyl-6- pyridyllpropyllbenzoic acid, dilithium salt. Methyl 4-[2-oxythia-3-[2-(E-2- carboxymethylethenyl)-3-[8-(4-methoxyphenyl)octyloxy]-6-pyridyl]propyl]benzoate (90mg, 0.148mmol) was dissolved in THF (1.5mL) and MeOH (1.5mL) and treated with l.OM LiOH (0.8mL, O.δmmol). The reaction was stirred under an argon atmosphere for 20 hours. The solvent was evaporated and the product purified by Reversed Phased MPLC (RP-18 silica, H2θ-MeOH gradient). Lyophilization yielded a colorless amorphous solid: H NMR (250MHz, d4-MeOH) δ 7.98 (d, J=8.6Hz, 2H, phenyl), 7.81 (d, J=15.8Hz, IH, olefin), 7.40 (d, J=8.6Hz, 2H, phenyl), 7.39 (d, J=8.6Hz, IH, pyridyl), 7.27 (d, J=8.6Hz, IH, pyridyl), 7.09 (d, J=15.8Hz, IH, olefin), 7.05 (d, J=8.6Hz, 2H, phenyl), 6.77 (d, J=8.6Hz, 2H, phenyl), 4.35 (d, J=12.8Hz, IH, SCH), 4.25 (d, J=12.8Hz, IH, SCH), 4.06 (m, 4H, OCH2; SCH2), 3.73 (s, 3H, OCH3), 2.52 (t, J=7.6Hz, 2H, benzylic), 1.86 (m, 2H, CH2), 1.55 (m, 4H, aUphatic), 1.35 (m, 6H, aliphatic); MS (FAB): 592 (M+H), 500 (M+H; free acid). Example 20
3-r2-Thia-3-r2-(E-2-carboxyethenyl)-3-r8-(4-methoxyphenyl)octyloxy1-6- pyridvnpropynbenzoic acid, dilithium salt 20(a). Methyl 3-mercaptomethylbenzoate. To a solution of methyl 3- bromomethylbenzoate (6.9g, 30mmol; Lancaster) in dry acetone (lOmL) was added via dropwise addition a solution of thiourea (2.28g, 30mmol) in dry acetone (4QmL) at room temperature. After 15 minutes the precipitated thiouronium salt was collected by filtration; the solids were washed with acetone and dried. The thiouronium salt was dissolved in H2O (65mL) and the pH was adjusted to 10.5 by the addition of 10% NaOH. The mixture was refluxed for 2 hours. After cooling to room temperature the solution was extracted with EtOAc and the organic layer was discarded. The aqueous solution was acidified to pH 1.5 and extracted three times with EtOAc. The organic extracts were dried (MgSO4), filtered and the solvent evaporated. The crude acid was then dissolved in anhydrous MeOH (125mL), cooled to 0°C, and dry HCl gas was 5 bubbled through the solution for 30 minutes. The reaction was then left for two days at room temperature. The mixture was concentrated in vacuo and the product was purified by flash column chromatography (siUca, 5% EtOAc in hexane) providing a colorless oil: IH NMR (250MHz, CDCI3) δ 8.00 (s, IH, 2-phenyl), 7.91 (d, J=7.6Hz, IH, 6- phenyl), 7.52 (d, J=7.6Hz, IH, 4-phenyl), 7.39 (dd, J=7.6Hz, IH, 5-phenyl), 3.92 (s, 10 3H, methyl ester), 3.78 (d, J=7.7Hz, 2H, SCH2), 1.79 (t, J=7.7Hz, IH, SH).
20(b). Methyl 3-r2-thia-3-r2-(E-2-carboxy-methylethenyl)-3-r8-(4- methoxyphenyl)octyloxyl-6-pyridynpropynbenzoate. To a cooled (0°C) solution of SOO2 (2.5mL, 35mmol) in dry toluene (25mL) under an argon atmosphere was added a
15 solution of 2-(E-2-carboxymethylethenyl)-3-[8-(4-methoxyphenyl)octyloxy]-6- hydroxymethylpyridine (1.5g, 3.5mmol) in toluene (lOmL). After 5 minutes the cooling bath was removed and the reaction was stirred for 4 hours at room temperature. The toluene and excess SOCI2 were evaporated. To this was added dry DMF (5mL), methyl 3-mercaptomethylbenzoate (600mg, 3.3mmol), and anhydrous CS2CO3 (6.6g,
20 20mmol). The reaction was heated at 60°C under an atmosphere of argon for 1.5 hours. Upon cooling to room temperature the reaction was diluted with EtOAc and washed with H20, 10-% NaOH, H2O, and brine and dried (MgSO4). Purification by flash column chromatography (sUica, 15% EtOAc in hexane) yielded a colorless waxy solid: 1H NMR (250MHz, CDCI3) δ 8.07 (d, J=15.8Hz, IH, olefin), 7.99 (s, IH, 2-phenyl); 25 7.90 (d, J=7.7Hz, IH, 6-pheήyl), 7.54 (d, J=7.7Hz, IH, 4-phenyl), 7.37 (dd, J=7.7Hz, IH, 5-phenyl), 7.28 (d, J=8.6Hz, IH, pyridyl), 7.14 (d, J=8.6Hz, IH, pyridyl), 7.11 (d, J=8.6Hz, 2H, phenyl), 7.08 (d, J=15.8Hz, IH, olefin), 6.82 (d, J=8.6Hz, 2H, phenyl), 3.99 (t, J=6.5Hz, 2H, OCH2), 3.91 (s, 3H, methyl ester), 3.81 (s, 3H, OCH3), 3.78 (s, 3H, methyl ester), 3.71 (s, 2H, SCH2), 3.68 (s, 2H, SCH2), 30 2.55 (t, J=7.6Hz, 2H, benzylic), 1.78 (m, 2H, CH2), 1.5 (m, 10H, aliphatic); MS (CI): 592.2 (M+H).
20(c). 3-r2-Thia-3-r2-(E-2-carboxyethenyl)-3-r8-(4-methoxyphenyl)octyloxy1-6- pyridyllpropynbenzoic acid, dilithium salt Methyl 3-[2-thia-3-[2-(E-2-carboxy- 3.5 methylethenyl)-3-[8-(4-methoxyphenyl)octyloxy]-6-pyridyl]propyl]benzoate (1.5g, 2 mmol) was dissolved in THF (20mL) and MeOH (20mL) and treated with l.OM LiOH (11.5mL, 11.5mmol). The reaction was stirred under an argon atmosphere for 20 hours. The solvent was evaporated and the product purified by Reversed Phased MPLC (RP-18 silica, H2θ-MeOH gradient). LyophiUzation yielded a colorless amorphous solid: -1H NMR (250MHz, d4-MeOH) δ 7.96 (s, IH, 2-phenyl), 7.85 (d, J=7.7Hz, IH, 6-phenyl), 7.79 (d, J=15.8Hz, IH, olefin), 7.30 (m, 4H, 4,5-phenyl, 4,5-pyridyl), 7.08 (d, J=15.8Hz, IH, olefin), 7.06 (d, J=8.6Hz, 2H, phenyl), 6.80 (d, J=8.6Hz, 2H, phenyl), 4.04 (t, J=6.5Hz, 2H, OCH2), 3.74 (s, 2H, SCH2), 3.73 (s, 3H, OCH3), 3.69 (s, 2H, SCH2), 2.55 (t, J*=7.6Hz, 2H, benzylic), 1.87 (m, 2H, CH2), 1.50 (m, 10H, aliphatic); Analysis calcd for C32H35NO6SLi2 • 5/4H20: C, 64.32; H, 6.32; N, 2.34; found: C, 64.28; H, 6.24; N, 2.32; MS (FAB): 564.2 (M+H; free acid).
Proceeding in a similar manner, but substituting another alcohol for 8-(4- methoxyphenyl)octan-l-ol, such as 4-(4-methoxyphenyl)butan-l-ol, preparing or purchasing the appropriate mercaptan and the appropriate benzoate or aniline, the following compounds were make:
3-[2-thia-3-[2-(E-2-carboxyethenyl)-3-[4-(4-methoxyphenyl)butyloxy]-6- pyridyl]propyl]benzoic acid, dilithium salt;
2-[2-thia-3-[2-(E-2-carboxyethenyl)-3-[8-(4-methoxyphenyl)octyloxy]-6- pyridyl]propyl]benzoic acid, dilithium salt;
4-[2-thia-3-[2-(E-2-carboxyethenyl)-3-[8-(4-methoxyphenyl)octyloxy]-6- pyridyl]ethyl]phenylacetic acid, dilithium salt; l-fluoro-3-[2-thia-3-[2-(E-2-carboxyethenyl)-3-[4-(4-methoxyphenyl)butyloxy]- 6-pyridyl]propyl] benzene, lithium salt 3-[2-thia-3-[2-(E-2-carboxyethenyl)-3-[4-(4-methoxyphenyl)butyloxy]-6- pyridyljpropyl]benzene, lithium salt l-fluoro-4-[2-thia-3-[2-(E-2-carboxyethenyl)-3-[4-(4-methoxyphenyl)butyloxy]- 6-pyridyl]propyl] benzene, lithium salt
3-[2-thia-3-[2-(E-2-carboxyethenyl)-3-[8-(4-methoxyphenyl)octyloxy]-6- pyridyl]propyl]aniUne, dilithium salt;
N-[3-[2-thia-3-[2-(E-2-carboxyethenyl)-3-[8-(4-methoxyphenyl)octyloxy]-6- pyridyl3propyl]phenyltrifluoro-methanesulfonamide; [Mercaptan prepared by the method of Tagawa, H. and Veno, K., Chem. Pharm, Bull, 26(5), 1384 (1978)]; and
N-[3-[2-thia-3-[2-(E-2-carboxyethenyl)-3-[8-(4-methoxyphenyl)octyloxy]-6- pyridyl]propyl]benzene-methanseulfonamide, [Mercaptan prepared by the method of Lutter, E., Chem. Ber., 30, 1065 (1897)]. Example 21
3-r2-Oxythia-3-r2-(E-2-carboxyethenyl)-3-r8-(4-methoxyphenvI)octyIoxyl-6- pyridynpropyllbenzoic acid, dilithium salt and 3-r2-Dioxythia-3-r2-(E-2- carboxyethenyl)-3-r8-(4-methoxyphenyl)octyloxy1-6-pyridvnpropyI1benzoic acid. dilithium salt
21(a). Methyl 3-r2-oxythia-3-r2-(E-2-carboxymethylethenyl)-3-r8-(4- methoxyphenyl)octyloxy1-6-pyridyl1propyllbenzoate and methyl 3-r2-dioxythia-3-r2-(E- 2-carboxymethylemenyl)-3-r8-(4-methoxyphenyl)octyloxyl-6-pyridvπpropyl]benzoate. Methyl 3-[2-thia-3-[2-(E-2-carboxymethylethenyl)-3-[8-(4- methoxyphenyl)octyloxy]-6-pyridyl]propyl]benzoate (150 mg, 0.25mmol) was dissolved in dry CH2CI2 (5mL) under an argon atmosphere and cooled to -20°C. To this was added 85% m-chloroperoxybenzoic acid (52mg, 0.26mmol) in two portions 15 minutes apart The reaction was stirred for 25 minutes at -20 °C following the second addition and then quenched with 5% NaHCU3. The product was extracted into CH2CI2 and the organic extracts were dried (MgSO4). Purification by flash column chromatography
(sitica, 20 and 50% EtOAc in hexane) gave the sulfoxide as a white solid and the sulfone as a white solid.
Sulfoxide: -"H NMR (250MHz, CDCI3) δ 8.07 (d, J=15.8Hz, IH, olefin), 8.01 (s, IH, 2-phenyl), 7.97 (d, J=7.7Hz, IH, 6-phenyl), 7.55 (d, J=7.7Hz, IH, 4-phenyl), 7.46 (dd, J=7.7Hz, IH, 5-phenyl), 7.28 (d, J=8.6Hz, IH, pyridyl), 7.20 (d, J=8.6Hz, IH, pyridyl), 7.07(d, J=8.6Hz, 2H, phenyl), 7.05 (d, J=15.8Hz, IH, olefin), 6.78 (d, J=8.6Hz, 2H, phenyl), 4.12 (d, J=12.8Hz, IH, SCH), 4.05 (d, J=12.8Hz, IH, SCH), 4.04 (t, J=6.5Hz, 2H, OCH2), 3.94 (s, 3H, methyl ester), 3.92 (m, 2H, SCH2), 3.83 (s, 3H, OCH3), 3.79 (s, 3H, methyl ester), 2.56 (t, J=7.6Hz, 2H, benzylic), 1.87 (m, 2H, CH2), 1.40 (m, 10H, aliphatic); Analysis calcd for C34H41NO7S • I/4H2O: C, 66.70; H, 6.83; N, 2.29; found: C, 66.54; H, 6.68; N, 2.30; MS (CI): 608.2 (M+H);
Sulfone: H NMR (250MHz, CDCI3) 8.23 (s, IH, 2-phenyl), 8.13 (d, J=15.8Hz, IH, olefin), 8.08 (d, J=7.7Hz, IH, 6-phenyl), 7.74 (d, J=7.7Hz, IH, 4- phenyl), 7.51 (dd, J=7.7Hz, IH, 5-phenyl), 7.46 (d, J=8.6Hz, IH, pyridyl), 7.24 (d, J=8.6Hz, IH, pyridyl), 7.12 (d, J=8.6Hz, 2H, phenyl), 7.11 (d, J=15.8Hz, IH, olefin), 6.84 (d, J=8.6Hz, 2H, phenyl), 4.30 (s, 4H, SCH2), 4.06 (t, J=6.5Hz, 2H, OCH2), 3.93 (s, 3H, methyl ester), 3.83 (s, 3H, OCH3), 3.79 (s, 3H, methyl ester), 2.56 (t, J=7.6Hz, 2H, benzylic), 1.9 (m, 2H, CH2), 1.5 (m, 10H, aliphatic); MS (CI): 624.2 (M+H).
21(b). 3-r2-Oxythia-3-r2-(E-2-carboxyethenyl)-3-r8-(4-methoxyphenyl)octyloxy1-6- pyridyllpropyllbenzoic acid, dilithium salt. Methyl 3-[2-oxythia-3-[2-(E-2- carboxymethylethenyl)-3-[8-(4-methoxyphenyl)octyloxy]-6-pyridyl]propyl]benzoate (lOOmg, 0.165mmol) was dissolved in THF (1.5mL) and MeOH (1.5mL) and treated with l.OM LiOH (0.8mL, 0.8mmol). The reaction was stirred under an argon atmosphere for 20 hours. The solvent was evaporated and the product purified by Reversed Phased MPLC (RP-18 silica, H2θ-MeOH gradient). Lyophilization yielded a colorless amorphous solid: -*H NMR (250MHz, d4-MeOH) δ 7.95 (m, 2H, 2,6- phenyl), 7.82 (d, J=15.8Hz, IH, olefin), 7.40 (m, 2H, 4,5-phenyl), 7.37 (d, J=8.6Hz, IH, pyridyl), 7.29 (d, J=8.6Hz, IH, pyridyl), 7.10 (d, J=15.8Hz, IH, olefin), 7.06 (d, J=8.6Hz, 2H, phenyl), 6.79 (d, J=8.6Hz, 2H, phenyl), 4.36 (d, J=12.8Hz, IH, SCH), 4.25 (d, J=12.8Hz, IH, SCH), 4.08 (m, 4H, OCH2, SCH2), 3.73 (s, 3H, OCH3), 2.54 (t, J=7.6Hz, 2H, benzylic), 1.87 (m, 2H, CH2), 1.55 (m, 4H, aliphatic), 1.37 (m, 6H, aliphatic); Analysis calcd for C32H35NO7SLi2 • 7/4H20: C, 61.68; H, 6.23; N, 2.25; found: C, 61.79; H, 6.10; N, 2.39; MS (FAB): 592.2 (M+H).
This reaction was also used to prepare 3-[2-oxythia-3-[2-(E-2-carboxyethenyl)-3- [4-(4-methoxyphenyl)butyloxy]-6-pyridyl]propyl]benzoic acid, lithium salt. 21(c). 3-[2-Dioxythia-3-f2-(E-2-carboxyethenyl)-3-18-(4-methoxyphenyl)octyloxy1-6- pyridyllpropyllbenzoic acid, dilithium salt. Methyl 3-[2-dioxythia-3-[2-(E-2- carboxymethylethenyl)-3-[8-(4-methoxyphenyl)octyloxy]-6-pyridyl]propyl]benzoate (20mg, 0.032 lmmol) was dissolved in THF (0.5mL) and MeOH (0.5mL) and treated with l.OM LiOH (0.2mL, 0.2mmol). The reaction was stirred under an argon atmosphere for 20 hours. The solvent was evaporated and the product purified by Reversed Phased MPLC (RP- 18 silica, H2θ-MeOH gradient). Lyophilization yielded a colorless amorphous solid: *H NMR (250MHz, d4-MeOH) δ 8.08 (s, IH, 2-phenyl), 7.96 (d, J=7.7Hz, IH, 6-phenyl), 7.85 (d, J=15.8Hz, IH, olefin), 7.58 (d, J=7.7Hz, IH, 4-phenyl), 7.39 (m, 3H, 5-phenyl, 4,5-pyridyl), 7.13 (d, J=15.8Hz, IH, olefin), 7.08 (d, J=8.6Hz, 2H, phenyl), 6.82 (d, J=8.6Hz, 2H, phenyl), 4.86 (s, 4H, SCH2), 4.10 (t, J=6.5Hz, 2H, OCH2), 3.75 (s, 3H, OCH3), 2.52 (t, J=7.6Hz, 2H, benzylic), 1.87 (m, 2H, CH2), 1.55 (m, 4H, aliphatic), 1.40 (m, 6H, aliphatic); Analysis calcd for C32H35NOδSLi2 • 9/4H20: C, 59.30; H, 6.14; N, 2.16; found: C, 59.29; H, 6.20; N, 2.39; MS (FAB): 608.2 (M+H).
This reaction can also be used to make other sulfoxides and sulfones of this inventions including 3-[2-dioxythia-[2-(E-2-carboxyethenyl)-3- [4-(4- methoxyphenyl)butyloxy]-6-pyridyl]propyl]benzoic acid, dilithium salt, and 3-[2- oxythia-[2-(E-2-carboxyethenyl)-3-[4-(4-methoxyphenyl)butyloxy]-6- pyridyl]propyl]benzoic acid, dilithium salt. Example 22 3-r2-Thia-3-r2-(2-carboxyethanyl)-3-r8-(4-methoxyDhenyl)octvIoxy1-6- pyridynpropyn benzoic acid, dilithium salt 22(a). 2-(2-Carboxymethylethanyl)-3-r8-(4-methoxyphenvI)-octyloxyl-6- hydroxymethylpyridine. 2-(E-2-Carboxymethyl-ethenyl)-3-[8-(4- methoxyphenyl)octyloxy]-6-hydroxymethylpyridine (300mg, 0.702mmol) was dissolved in MeOH (3mL) and treated with 5% Pd-C catalyst (30mg). The reaction was stirred under an atmosphere of H2 (balloon pressure) for 5 hours. The reaction was diluted with CH2CI2, and filtered through CeUte, and concentrated. Purification by flash column chromatography (sitica, EtOAc:CH2θ2:hexane, 25:50:25) gave a pale yellow oil: --H NMR (250MHz, CDCI3) δ 7.09 (m, 4H, phenyl, pyridyl), 6.80 (d, J=8.6Hz, 2H, phenyl), 4.62 (s, 2H, CH2), 3.93 (t, J=6.5Hz, 2H, OCH2), 3.77 (s, 3H, OCH3), 3.68 (s, 3H, methyl ester), 3.16 (dd, J=7.3, 7.2Hz, 2H, CH2), 2.77 (dd, J=7.3, 7.2Hz, 2H, CH2), 2.54 (t, J=7.6Hz, 2H, benzylic), 1.79 (m, 2H, CH2), 1.57 (m, 2H, CH2), 1.44 (m, 2H, CH2), 1.34 (m, 6H, aliphatic); MS (CI): 430.2 (M+H).
22(b). Methyl 3-r2-thia-3-r2-(2-carboxymethylethanyl)-3-r8-(4- methoxyphenyl)octyloxy1-6-pyridvnpropynbenzoate. To a cooled (0°C) solution of SOCI2 (0.17mL, 2.33mmol) in dry toluene (1.5mL) under an argon atmosphere was added 2-(2-carboxymethylethanyl)-3-[8-(4-methoxyphenyl)octyloxy] -6- hydroxymethylpyridine (lOOmg, 0.233mmol). After 5 minutes the cooling bath was removed and the reaction was stirred for 1.5 hours at room temperature. The toluene and excess SOCI2 were evaporated. To this was added dry DMF (0.5mL), methyl 3- mercaptomethylbenzoate (47mg, 0.258mmol), and anhydrous CS2CO3 (380mg, 1.16mmol). The reaction was heated at 60° C under an atmosphere of argon for 1 hour. Upon cooling to room temperature the reaction was diluted with EtOAc and washed with H20, 10% NaOH, H2O, and brine and dried (MgSθ4). Purification by flash column chromatography (siUca, EtOAc:CH2θ2:hexane, 15:25:65) yielded a pale yellow oil: 1H NMR (250MHz, CDCI3) δ 7.99 (s, IH, 2-phenyl), 7.92 (d, J=7.7Hz, IH, 6-phenyl), 7.54 (d, J=7.7Hz, IH, 4-phenyl), 7.37 (dd, J=7.7Hz, IH, 5-phenyl), 7.09 (m, 4H, pyridyl, phenyl), 6.88 (d, J=8.6Hz, 2H, phenyl), 3.93 (t, J=6.5Hz, 2H, OCH2), 3.91 (s, 3H, methyl ester), 3.78 (s, 3H, OCH3), 3.71 (s, 2H, SCH2), 3.65 (s, 3H, methyl ester), 3.64 (s, 2H, SCH2), 3.14 (dd, J=7.3, 7.2Hz, 2H, CH2), 2.79 (dd, J=7.3, 7.2Hz, 2H, CH2), 2.55 (t, J=7.6Hz, 2H, benzylic), 1.80 (m, 2H, CH2), 1.58 (m, 2H, CH2), L45 (m, 2H, CH2), 1.34 (m, 6H, aliphatic); Analysis calcd for C34H43NO6S: C, 68.77; H, 7.30; N, 2.36; found: C, 68.87; H, 7.21; N, 2.17; MS (CI): 594.6 (M+H). ' 22(c). 3-r2-Thia-3-r2-(2-carboxyethanyl)-3-r8-(4-methoxy-t)henvDoctyloxyl-6- pyridyllpropynbenzoic acid, dilithium salt. Methyl 3-[2-thia-3-[2-(2- carboxymethylethanyl)-3-[8-(4-methoxyphenyl)octyloxy]-6-pyridyllpropyl]benzoate (116mg, 0.195mmol) was dissolved in THF (2.25mL) and MeOH (0.75mL) and treated with l.OM LiOH (0.75mL, 0.75mmol). The reaction was stirred under an argon atmosphere for 20 hours. The solvent was evaporated and the product purified by Reversed Phased MPLC (RP-18 silica, H2θ-MeOH gradient). Lyophilization yielded a colorless amorphous solid: lH NMR (250MHz, d4-MeOH) δ 7.90 (s, IH, 2-phenyl), 7.83 (d, J=7.7Hz, IH, 6-phenyl), 7.34 (m, 2H, 4,5-phenyl), 7.25 (d, J=8.6Hz, IH, pyridyl), 7.14 (d, J=8.6Hz, IH, pyridyl), 7.07 (d, J=8.6Hz, 2H, phenyl), 6.83 (d, J=8.6Hz, 2H, phenyl), 4.01 (t, J=6.5Hz, 2H, OCH2), 3.77 (s, 3H, OCH3), 3.73 (s, 2H, SCH2), 3.71 (s, 2H, SCH2), 3.07 (dd, J=7.3, 7.2Hz, 2H, CH2), 2.47 (m, 4H, CH2, benzylic), 1.81 (m, 2H, CH2), 1.50 (m, 4H, aliphatic), 1.30 (m, 6H, aliphatic); Analysis calcd for C32H37Nθ6SLi2 • 9/4H20: C, 62.18; H, 6.77; N, 2.27; found: C, 61.93; H, 6.48; N, 2.10; MS (ES): 566 (M+H; free acid), 564 (M-H; free acid). In a similiar manner, the following compounds were made: 3-[l-thia-2-[2-(2-carboxyethanyl)-3-[4-(4-methoxyphenyl)butyloxy]-6- pyridyljethyl] benzene, lithium salt;
3-[2-thia-3-[2-(2-carboxyethanyl)-3-[4-(4-methoxyphenyl)butyloxy]-6- pyridyl]propyl]benzene, lithium salt; and l-fluoro-4-[2-thia-3-[2-(2-carboxyethanyl)-3-[4-(4-methoxyphenyl)butyloxy]-6- pyridyl]propyl]benzene, lithium salt.
Example 23
4-r2-Thia-3-r2-(E-2-carboxyethenyl)-3-r8-(4-methoxyphenyl)octyloxyl-6- pyridyllpropyllphenylacetic acid, dilithium salt 23(a). Methyl 4-mercaptomethylphenylacetate.
4-Bromomethyl-phenylacetic acid (lg, 4.4mmol) and thiourea (334mg, 4.4mmol) were heated (35-40°C) in acetone (20mL) until a homogeneous solution resulted. Upon cooling to room temperature the thiouronium salt precipitated. The solvent was evaporated and the residue suspended in H2O (lOmL). The pH was adjusted to 12 with 10% NaOH. The mixture was then refluxed for two hours. The solution was acidified with 6NHC1 and the product was extracted into EtOAc. The organic extracts were washed with H2O and dried (MgSO4). The crude acid was dissolved in MeOH (20mL) and treated with cone. H2SO4 (0.33mL); the reaction was refluxed for 1.5 hours. Upon cooling to room temperature the reaction was diluted with H2O and the product was extracted into EtOAc. The organic extracts were washed with H2O and dried (MgS04). The methyl ester was obtained as an oil; crude product was used without further purification: -1H NMR (250MHz, CDCI3) δ 7.23 (m, 4H, aryl), 3.71 (d, J=7.6Hz, 2H, SCH2), 3.68 (s, 3H, methyl ester), 3.60 (s, 2H, CH2), 1.74 (t, J=7.6Hz, IH, SH); IR (film) nmax 2570 (SH), 1740 (CO) cm"1.
23(b). Methyl 4-r2-thia-3-r2-(E-2-carboxymethylethenyl)-3-r8-(4- methoxyphenyl)octyloxyl-6-pyridynpropyllphenyIacetate. To a cooled (0°C) solution of SOCI2 (0.44mL, 6.2mmol) in dry toluene (7mL) under an argon atmosphere was added 2-(E-2-carboxymethylethenyl)-3-[8-(4-methoxyphenyl)octyloxy]-6- hydroxymethylpyridine (270mg, 0.62mmol). After 5 minutes the cooling bath was removed and the reaction was stirred for 2 hours at room temperature. The toluene and excess SOC12 were evaporated. To this was added dry DMF (3mL), methyl 4-mercapto- methylphenylacetate (183mg, 0.93mmol), and anhydrous CS2CO3 (907mg, 2.79mmol). The reaction was heated at 60°C under an atmosphere of argon for 1 hour. Upon cooling to room temperature the reaction was diluted with EtOAc and washed with H20, 10% NaOH, H2O, and brine and dried (MgS04). Purification by flash column chromatography (siUca, 20% EtOAc in hexane) yielded a pale yellow oil: -1H NMR (250MHz, CDCI3) δ 8.08 (d, J=15.8Hz, IH, olefin), 7.22 (m, 6H, phenyl, pyridyl), 7.12 (d, J=8.6Hz, 2H, phenyl), 7.07 (d, J=15.8Hz, IH, olefin), 6.83 (d, J=8.6Hz, 2H, phenyl), 4.00 (t, J=6.5Hz, 2H, OCH2), 3.82 (s, 3H, methyl ester), 3.78 (s, 3H, OCH3), 3.70 (s, 3H, methyl ester), 3.68 (s, 2H, SCH2), 3.67 (s, 2H, SCH2), 3.62 (s, 2H, CH2), 2.55 (t, J=7.6Hz, 2H, benzylic), 1.85 (m, 2H, CH2), 1.60 (m, 2H, CH2), 1.50 (m, 2H, CH2), 1.37 (m, 6H, aliphatic); MS (CI): 605 (M+H).
23(c). 4-r2-Thia-3-r2-(E-2-carboxyethenyl)-3-r8-(4-methoxyphenyl)octyloxy1-6- pyridynpropyllphenylacetic acid, dilithium salt Methyl 4-[2-thia-3-[2-(E-2- carboxymethyl-ethenyl)-3-[8-(4-methoxyphenyl)octyloxy]-6-pyridyl]propyl]- phenylacetate (lOOmg, 0.165mmol) was dissolved in THF (1.4mL) and MeOH (0.5mL) and treated with l.OM LiOH (0.5mL, 0.5mmol). The reaction was stirred under an argon atmosphere for 20 hours. The solvent was evaporated and the product purified by Reversed Phased MPLC (RP-18 silica, H2θ-MeOH gradient). Lyophilization yielded a colorless amorphous solid: IH NMR (250MHz, d -MeOH) δ 7.76 (d, J=15.8Hz, IH, olefin), 7.21 (m, 6H, phenyl, pyridyl), 7.06 (d, J=8.6Hz, 2H, phenyl), 7.05 (d, J=15.8Hz, IH, olefin), 6.77 (d, J=8.6Hz, 2H, phenyl), 4.02 (t, J=6.5Hz, 2H, OCH2), 3.72 (s, 3H, OCH3), 3.66 (s, 4H, SCH2), 3.44 (s, 2H, CH2), 2.51 (t, J=7.6Hz, 2H, benzyUc), 1.86 (m, 2H, CH2), 1.53 (m, 4H, aUphatic), 1.34 (m, 6H, aliphatic); MS (FAB): 578.2 (M+H; free acid). Example 24 4-r2-Oxythia-3-r2-(E-2-carboxyethenyl)-3-r8-(4-methoχyphenyl)octyloxyl-6- pyridvnpropyllphenylacetic acid, dilithium salt 24(a). Methyl 4-r2-oxythia-3-r2-(E-2-carboxymethylethenyl)-3-r8-(4- methoxyphenyl)octyloxy1-6-pyridvnpropynphenylacetate.
Methyl 4-[2-thia-3-[2-(E-2-carboxymethylethenyl)-3-[8-(4- methoxyphenyl)octyloxy]-6-pvridyl]propyl]phenylacetate (171mg, 0.28mmol) was dissolved in dry CH2CI2 (5mL) under an argon atmosphere and cooled to -10°C. To this was added 85% m-chloroperoxybenzoic acid (67mg, 0.31mmol) in two portions 15 minutes apart. The reaction was stirred for 20 minutes at - 10°C following the second addition and then quenched with aq NaHCO3. The product was extracted into EtOAc and the organic extracts were washed with H2O and brine and dried (MgS'04). Purification by flash column chromatography (silica, 30% EtOAc in hexane) gave the sulfoxide as a white solid: !H NMR (250MHz, CDCI3) δ 8.00 (d, J=15.8Hz, IH, olefin), 7.30 (d, J=8.2Hz, 2H, phenyl), 7.23 (d, J=8.2Hz, 2H, phenyl), 7.20 (d, J=8.6Hz, IH, pyridyl), 7.13 (d, J=8.6Hz, IH, pyridyl), 7.01 (d, J=8.6Hz, 2H, phenyl), 6.98 (d, J=15.8Hz, IH, olefin), 6.76 (d, J=8.6Hz, 2H, olefin), 4.05 (d, J=12.9Hz, IH, SCH), 4.02 (d, J=12.9Hz, IH, SCH), 3.94 (t, J=6.5Hz, 2H, OCH2), 3.83 (d, J=12.9Hz, IH, SCH), 3.80 (d, J=12.9Hz, IH, SCH), 3.74 (s, 3H, methyl ester), 3.70 (s, 3H, OCH3), 3.62 (s, 3H, methyl ester), 3.56 (s, 2H, CH2), 2.47 (t,
J=7.6Hz, 2H, benzylic), 1.78 (m, 2H, CH2), 1.57 (m, 2H, CH2), 1.39 (m, 2H, CH2), 1.28 (m, 6H, aliphatic); MS (FAB): 622.3 (M+H); mp 87-89°C.
24(b). 4-r2-Oxythia-3-r2-(E-2-carboxyethenyl)-3-r8-(4-methoxyphenvnoctyloxy1-6- pyridvUpropyllphenylacetic acid, dilithium salt. Methyl 4-[2-oxythia-3-[2-(E-2-carboxy- methylethenyl)-3-[8-(4-methoxyphenyl)octyloxy]-6-pyridyl]-propyl]phenylacetate (HOmg, 0.177mmol) was dissolved in THF (LOmL) and MeOH (0.53mL) and treated with l.OM LiOH (0.53mL, 0.53mmol). The reaction was stirred under an argon atmosphere for 20 hours. The solvent was evaporated and the product purified by Reversed Phased MPLC (RP-18 silica, H2θ-MeOH gradient). Lyophilization yielded a colorless amorphous solid: lFL NMR (250MHz, d4-MeOH) δ 7.79 (d, J=15.8Hz, IH, olefin), 7.34 (m, 6H, phenyl, pyridyl), 7.09 (d, J=15.8Hz, IH, olefin), 7.06 (d, J=8.6Hz, 2H, phenyl), 6.79 (d, J=8.6Hz, 2H, phenyl), 4.29 (d, J=12.9Hz, IH, SCH), 4.18 (d, J=12.9Hz, IH, SCH), 4.04 (m, 4H, SCH2, OCH2), 3.73 (s, 3H, OCH3), 3.48 (s, 2H, CH2), 2.55 (t, J=7.6Hz, 2H, benzylic), 1.85 (m, 2H, CH2), 1.55 (m, 4H, aUphatic), 1.35 (ni, 6H, aliphatic); MS (FAB): 606.3 (M+H), 594.4 (M+H; free acid)! Example 25 3-r2-Thia-3-r2-(E-2-carboxyethenyl)-3-(8-(4-methoxyphenyl)octyloxy)-6- pyridyllpropyl1-N.N-dimethylbenzamide, lithium salt 25(a). 3-r2-Thia-3-r2-(E-2-carboxymethylethenyl)-3-(8-(4-methoxyphenyl)octyloxy)-6- pyridvπpropyπbenzoic acid. To a cooled (0 °C) solution of SOCI2 (0.85mL, 11.7mmol) in dry toluene (5mL) under an argon atmosphere was added a solution of 2-(E-2- carboxymethylethenyl)-3-[8-(4-methoxyphenyI)octyloxy]-6-hydroxymethylpyridine (500mg, 1.17mmol) in toluene (6mL). After 5 minutes the cooling bath was removed and the reaction was stirred for 2 hours at room temperature. The toluene and excess SOCI2 were evaporated. To this was added dry DMF (2mL), 3-mercaptomethyl-benzoic acid (216mg, 1.29mmol) in DMF (2mL), and anhydrous CS2CO3 (3.8g, 11.7mmol). The reaction was heated at 60°C under an atmosphere of argon for 6 hours. Upon cooling to room temperature the reaction was diluted with H2O and washed with EtOAc. The aqueous phase was acidified to pH 1.2 and extracted with EtOAc. The combined organic extracts were washed with H2O, and brine and dried (MgS04). Purification by flash column chromatography (siUca, 5% MeOH in CH2CI2) yielded a pale yellow oil: IH NMR (250MHz, CDCI3) δ 8.07 (d, J=15.7Hz, IH, olefin), 8.05 (s, IH, 2-phenyl), 7.96 (d, J=7.6Hz, IH, 6-phenyl), 7.58 (d, J=7.6Hz, IH, 4-phenyl), 7.39 (dd, J=7.6Hz, IH, 5-phenyl), 7.24 (d, J=8.6Hz, IH, pyridyl), 7.13 (d, J=8.6Hz, IH, pyridyl), 7.08 (d, J=8.6Hz, 2H, phenyl), 7.06 (d, J=15.7Hz, IH, olefin), 6.82 (d,
J=8.6Hz, 2H, phenyl), 4.01 (t, J=6.5Hz, 2H, O-CH2), 3.81 (s, 3H, methyl ester), 3.78 (s, 3H, OMe), 3.72 (s, 2H, S-CH2), 3.69 (s, 2H, S-CH2), 2.52 (t, J=7.6Hz, 2H, . benzyUc), 1.85 (m, 2H, CH2), 1.57 (m, 2H, CH2), 1.49 (m, 2H, CH2), 1.35 (m, 6H, aUphatic).
25(b). 3-r2-Thia-3-r2-(E-2-carboxymethylethenyl)-3-(8-(4-methoxyphenyl)octyloxy)-6- pyridvnpropyll-N.N-dimethylbenzamide. 3-[2-Thia-3-[2-(E-2-carboxymethylethenyl)- 3-(8-(4-methoxyphenyl)octyloxy)-6-pyridyl]propyl]benzoic acid (98mg, 0.17mmol) was dissolved in SOCI2 (5mL) and refluxed for 1 hour. The excess SOCI2 was removed in vacuo. The resulting acid chloride was dissolved in dry CH2CI2 (5mL), cooled to 0 °C, and treated with triethylamine (52mL, 0.37mmol). Diethylamine was then introduced into the reaction via a cooling finger; reaction was stirred for 15 minutes. The solvent was removed in vacuo and the product was purified by flash column chromatography (siUca, 35% EtOAc in hexane) to give a pale yeUow oU: H NMR (250MHz, CDCI3) δ 8.07 (d, J=15.7Hz, IH, olefin), 7.38 (m, 4H, 4,5,6-phenyl, pyridyl), 7.29 (s, IH, 2- phenyl), 7.20 (d, J=8.6Hz, IH, pyridyl), 7.11 (d, J=8.6Hz, 2H, phenyl), 7.03 (d, J=15.7Hz, IH, olefin), 6.82 (d, J=8.6Hz, 2H, phenyl), 4.02 (t, J=6.5Hz, 2H, 0-CH2), 3.82 (s, 3H, methyl ester), 3.78 (s, 3H, OMe), 3.70 (s, 2H, S-CH2), 3.68 (s, 2H, S- CH2), 3.12 (s, 3H, N-Me), 2.97 (s, 3H, N-Me), 2.55 (t, J=7.6Hz, 2H, benzylic), 1.86 (m, 2H, CH2), 1.6-1.3 (m, 10H, aliphatic).
25(c). 3-r2-Thia-3-[2-(E-2-carboxyethenyl)-3-(8-(4-methoxyphenyl)octyloxy)-6- pyridynpropyll-N.N-dimethylbenzamide. lithium salt. 3-[2-Thia-3-[2-(E-2- carboxymethylethenyl)-3-(8-(4-methoxyphenyl)octyloxy)-6-pyridyl]propyl]-N,N- dimethylbenzamide (80mg, 0.132mmol) was dissolved in THF (1.5mL) and MeOH (1.5mL) and treated with l.OM LiOH (0.4mL, 0.4mmol). The reaction was stiπed under an argon atmosphere for 24 hours. The solvent was. evaporated and the product purified by Reversed Phased MPLC (RP-18 silica, H2θ-MeOH gradient). Lyophilization yielded a colorless amorphous solid: lFL NMR (250MHz, d4-MeOH) δ 7.79 (d, J=15.7Hz, IH, olefin), 7.33 (m, 6H, 2,4,5,6-phenyl, 4,5-pyridyl), 7.07 (d, J=8.6Hz, 2H, phenyl), 7.05 (d, J=15.7Hz, olefin), 6.80 (d, J=8.6Hz, 2H, phenyl), 4.03 (t, J=6.5Hz, 2H, O- CH2), 3.76 (s, 2H, S-CH2), 3.74 (s, 3H, OMe), 3.69 (s, 2H, S-CH2), 3.09 (s, 3H, N- Me), 2.97 (s, 3H, N-Me), 2.52 (t, J=7.6Hz, 2H, benzylic), 1.86 ( , 2H, CH2), 1.54 (m, 4H, aliphatic), 1.36 (m, 6H, aliphatic).
Example 26 5-r3-r2-Thia-3-r2-(E-2-carboxyethenyl)-3-r8-(4-methoxyphenyl)octyloxy1-6- pyridvnpropyllphenylltetrazole. dilithium salt
This tetrazole is prepared via the acid chloride described above according to Duncia, Pierce, and Santella, /. Org. Chem., 1991, 56, 2395-2400.
Example 26bis (E)-Sodium 3-r3-r4-(4-methoxyphenyl)butyloxyl-6-fphenylthiomethyn-2-pyridinyl]-2- propenoate 26bis(a) (E)-Methyl 3-[3-r4-(4-methoxyphenyl)butyloxyl-6-lphenylthiomethyll-2- pyridinyll-2-propenoate. Thiophenol (0.017mL, 0.166mmol) was dissolved in dry MeCN (0.30mL) and treated with 2-(E-2-carboxymethylethenyl)-3-[4-(4- methoxyphenyl)butyloxy]-6-chloromethylpyridine hydrochloride (65mg, 0.152mmol) and l,8-diazabicyclo[5.4.0]undec-7-ene (DBU, 0.08mL, 0.532mmol). The reaction was stirred under an atmospere of argon at 50 °C for 3h. The reaction solution was diluted with EtOAc and washed with H2O and brine and dried (MgSU4). Purification by flash column chromatography (silica, EtOAc: CH2CI2: hexane, 10: 15: 75) gave a colorless waxy solid: -Η NMR (250MHz, CDCI3) δ 8.04 (d, J=15.7Hz, IH, vinyl), 7.36-7.07 (m, 9H, aryl), 6.99 (d, J=15.7Hz, IH, vinyl), 6.83 (d, J=8.7Hz, 2H, phenyl), 4.21 (s, . 2H, CH2-S), 3.97 (t, J=6.1Hz, 2H, CH2-0), 3.81 (s, 3H, OMe), 3.78 (s, 3H, methyl ester), 2.64 (t, J=7.2Hz, 2H, benzylic), 1.81 (m, 4H, CH2CH2); analysis calcd. for C27H29NO4S • 3/8H2O: C, 68.95; H, 6.38; N, 2.98; found: C, 68.89; H, 6.23; N, 2.94; MS (ES+): 464.2 (M+H).
26bis(b) (E)-Sodium 3-r3-r4-(4-methoxyphenyl)butyloxyl-6-rphenylthiomethyn- 2-pyridinyll-2-propenoate. (E)-Methyl 3-[3-[4-(4-methoxyphenyl)butyloxy]-6- [phenylthiomethyl]-2-pyridinyl]-2-propenoate (55mg, 0.119mmol) was dissolved in THF ( OmL) and MeOH (0.30mL) and treated with l.OM NaOH (0.25mL, 0.25mmol). The reaction was stirred under an argon atmosphere for 20h. The solvent was evaporated and the product purified by Reversed Phased MPLC (RP-18 silica, H2θ-MeOH gradient). Lyophilization yielded the captioned product as a colorless amorphous soUd: lΕL NMR (250MHz, d-5-DMSO) δ 7.42 (d, J=15.7Hz, IH, vinyl), 7.40-7.20 (m, 7H, aryl), 7.12 (d, J=8.7Hz, 2H, phenyl), 6.83 (d, J=8.7Hz, 2H, phenyl), 6.82 (d, J=15.7Hz, IH, vinyl), 4.26 (s, 2H, CH2-S), 4.01 (t, J=6.1Hz, 2H, CH2-O), 3.71 (s, 3H, OMe), 2.61 (t, J=7.2Hz, 2H, benzylic), 1.73 (m, 4H, CH2CH2); analysis calcd. for C26H26NO4SNa- 3/4H2O: C, 64.38; H, 5.71; N, 2.89; found: C, 64.46; H, 6.04; N, 2.97; MS (ES+): 450.2 (M+H, free acid), (ES-): 448.0 (M-H, free acid). Proceeding in a similar manner, the foUowing compounds were made: (E)-Uthium 3-[3-[4-(4-methoxyphenyl)butyloxy]-6-[(2-chlorophenylthio)methyl]- 2-pyridinyl]-2-propenoate (E)-Uthium 3-[3-[4-(4-methoxyphenyl)butyloxy]-6-[(3,4- dichlorophenylthio)methyl]-2-pyridinyl]-2-propenoate
(E)-Uthium 3-[3-[4-(4-methoxyphenyl)butyloxy]- 6-[(4-chlorophenylthio)methyl]-2-pyridinyl]-2-propenoate, φ)-sodium 3-[3-[4-(4-methoxyphenyl)butyloxy]-6-[(4-fluorophenylthio)methyl]- 2-pyridinyl]-2-propenoate,
(E)-sodium 3-[3-[4-(4-memoxyphenyl)butyloxy]-6-[(3- chlorophenylthio)methyl]-2-pyridinyl]-2-propenoate,
(E)-sodium3-[3-[4-(4-methoxyphenyl)butyloxy]-6-[(2-chlorobenzylthio)methyl]- 2-pyridinyl]-2-propenoate, (E)-sodium 3-[3-[4-(4-methoxyphenyl)butyloxy]-6-[(2- methoxyphenylthio)methyl]-2-pyridinyl]-2-propenoate,
(E)-sodium3-[3-[4-(4-methoxyphenyl)butyloxy]-6-[(2,4- dichlorophenylthio)methyl]-2-pyridinyl]-2-propenoate,
(E)-sodium 3-[3-[4-(4-methoxyphenyl)butyloxy]-6-[(2- bromophenylthio)methyl]-2-pyridinyl]-2-propenoate, (E)-sodium 3-[3-[4-(4-methoxyphenyl)butyloxy]-6-[(2- methylphenylthio)methyl] -2-pyridinyl] -2-propenoate.
Example 27 Formulations for pharmaceutical use incorporating compounds of the present invention can be prepared in various forms and with numerous excipients. Means for making various formulations can be found in standard texts such as Remington's Pharmaceutical Sciences, and similar publications and compendia. Specific examples of formulations are given below.
Procedure for making tablets:
Step 1. Blend ingredients No. 1, No. 2, No. 3 and No. 4 in a suitable mixer/blender.
Step 2. Add sufficient water portionwise to the blend from Step 1 with careful mixing after each addition. Such additions of water and mixing until the mass is of a consistency to permit its conversion to wet granules.
Step 3. The wet mass is converted to granules by passing it through an oscillating granulator using a No. 8 mesh (2.38 mm) screen.
Step 4. The wet granules are then dried in an oven at 410°F (60°C) until dry. Step 5. The dry granules are lubricated with ingredient No. 5.
Step 6. The lubricated granules are compressed on a suitable tablet press.
Ingredients
1. Formula I compound Active ingre
2. Polyethylene Glycol 1000
3. polyethylene glycol 4000
Procedure:
Step 1. Melt ingredient No. 2 and No. 3 together and stir until uniform. Step 2. Dissolve ingredient No. 1 in the molten mass from Step 1 and stir until uniform. Step 3. Pour the molten mass from Step 2 into supository moulds and chill. Step 4. Remove the suppositories from moulds and wrap.
Example 28 Inhalation Formulation A compound of formula 1, 1 to 10 mg ml, is dissolved in isotonic saUne and aerosoUzed from a nebuUzer operating at an air flow adjusted to deliver the desired amount of drug per use.
Example 29 Topical formulations
Formulations for pharmaceutical use incorporating compounds of the present invention can be prepared in various forms and with numerous excipients. Means for making various formulations can be found in standard texts such as Remington's Pharmaceutical Sciences, and similar publications and compendia. Specific examples of formulations are given below.
Ointments Hvdrophyllic Petrolatum Ingredients Amount (% Weight/weight)
Cholesterol 30.0g
Stearyl Alcohol 30.0g
WhiteWax 78.0g
Active Ingredient 2.0g
White Petolatum 860.0g
The stearyl alcohol, white wax and white petrolatum are melted together (steam bath for example) and cholesterol and the active ingredient are added. Stirring is commenced and continued until the solids disappear. The source of heat is removed and the mix allowed to congeal and packaged in metal or plastic tubes.
The stearyl alcohol and white petrolatum are combined over heat. Other ingredients are dissolved in water, then this solution is added to the warm (ca 50 to 100°C) alcohol/petrolatum mixture and stirred until the mixture congeals. It can then be packed in tubes or another appropriate package form.

Claims

What is claimed is:
1. A compound of formula I
or an N-oxide, or a pharmaceutically acceptable salt where Z is O, NH, NCH3 or S(0)q where q is 0, 1 or 2, mis 0 - 5; R is C to C20-ah*phatic, unsubstituted or substituted phenyl C\ to Cjo-aUphatic where substituted phenyl has one or more radicals selected from the group consisting of lower alkoxy, lower alkyl, trihalomethyl, and halo, or R is Cj to C20-aϋphatic-O-, or R is unsubstituted or substituted phenyl Ci to Cio-aUphatic-0- where substituted phenyl has one or more radicals selected from the group consisting of lower alkoxy, lower alkyl, trihalomethyl, and halo; Ri is -(Ci to C5 aliphatic)R4, -(Ci to C5 aliphatic)CHO, -( . to C5 aUphatic)CH2OR8, -R4, -CH2OH, or CHO;
R2 is H, halo, lower alkyl, lower alkoxy, -CN, -(CH2)nR4, -CH(NH2)(R4), or -(CH2)nR9 where n is 0 - 5 and where R9 is -N( ?)2 where each R7 is independently H, or an atiphatic group of 1 to 10 carbon atoms, or acyl of 1-6 carbon atoms, or a cycloalkyl-(CH2)n- group of 4 to 10 carbons where n is 0-3, or both R7 groups form a ring having 4 to 6 carbons; or
R3 is hydrogen, lower alkyl, lower alkoxy, halo, -CN, R4, NHCONH2, or OH; each R4 group is independently -COR5 where R5 is -OH, a pharmaceuticaUy acceptable ester-forming group -ORg, or -OX where X is a pharmaceuticaUy acceptable cation, or R5 is -N( 7)2 where each R7 is independently H, or an aliphatic group of 1 to 10 carbon atoms, or a cycloalkyl-(CH2)n- group of 4 to 10 carbons where n is 0-3, or both R7 groups form a ring having 4 to 6 carbons, or R4 is a sulfonamide, or an amide, ortetrazol-5-yl; and
Rδ is hydrogen, Ci to Cβ alkyl, or Ci to Cβ-acyl, exlcuding those compounds where R2 and R3 are other than hydrogen and are substituted in the 2 and 6 positions.
2. A pharmaceutical composition comprising an effective amount of a compound of formula I according to claim 1, alone or in combination with a pharmaceutically acceptable excipient.
3. A method for treating psoriasis, which method comprises administering an effective amount of a compound of formula I according to claim 1 , alone or in combination with a pharmaceutically acceptable excipient.
4. A pharmaceutical composition comprising an effective amount of a compound of formula I according to claim 36, alone or in combination with a pharmaceutically acceptable excipient.
5. A method for treating psoriasis, which method comprises administering an effective amount of a compound of formula I according to claim 36, alone or in combination with a pharmaceutically acceptable excipient.
EP92920043A 1991-09-19 1992-09-01 Pyridine compounds for treating leukotriene-related diseases Withdrawn EP0604529A1 (en)

Applications Claiming Priority (10)

Application Number Priority Date Filing Date Title
US76271091A 1991-09-19 1991-09-19
US762710 1991-09-19
US79093191A 1991-11-12 1991-11-12
US790931 1991-11-12
US80959391A 1991-12-18 1991-12-18
US809593 1991-12-18
US93286992A 1992-08-20 1992-08-20
US932869 1992-08-20
PCT/US1992/007466 WO1993006085A1 (en) 1991-09-19 1992-09-01 Pyridine compounds for treating leukotriene-related diseases
CN93103596A CN1092409A (en) 1991-09-19 1993-03-19 The compound that is used for the treatment of leukotriene-related disease

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NZ254473A (en) * 1992-06-30 1996-11-26 Smithkline Beecham Corp Preparation of phenylthiomethylpyridinylalkenoates
GB9313145D0 (en) * 1993-06-25 1993-08-11 Smithkline Beecham Plc Process
IL115420A0 (en) 1994-09-26 1995-12-31 Zeneca Ltd Aminoheterocyclic derivatives
DK0812194T3 (en) * 1995-03-02 2000-12-18 Smithkline Beecham Corp Method of treating atopic dermatitis and contact dermatitis
GB9508137D0 (en) * 1995-04-21 1995-06-07 Smithkline Beecham Plc Formulation
AU1608397A (en) 1996-02-02 1997-08-22 Zeneca Limited Heterocyclic compounds useful as pharmaceutical agents
GB9602166D0 (en) 1996-02-02 1996-04-03 Zeneca Ltd Aminoheterocyclic derivatives
US5929096A (en) * 1996-02-29 1999-07-27 Smithkline Beecham Corporation Method for treating atopic dermatitis and contact dermatitis
CN1228087A (en) * 1996-08-14 1999-09-08 曾尼卡有限公司 Substituted pyrimidine derivatives and their pharmaceutical use
CA2265996A1 (en) 1996-09-26 1998-04-02 Roger Aki Fujimoto Aryl-substituted acrylamides with leukotriene b4 (ltb-4) receptor antagonist activity
UA56197C2 (en) 1996-11-08 2003-05-15 Зенека Лімітед Heterocyclic derivatives
WO1998035956A1 (en) 1997-02-13 1998-08-20 Zeneca Limited Heterocyclic compounds useful as oxido-squalene cyclase inhibitors
ATE242774T1 (en) 1997-02-13 2003-06-15 Astrazeneca Ab HETEROCYCLIC COMPOUNDS THAT ARE USED AS OXIDOSQUALENE CYCLASE INHIBITORS
GB9715895D0 (en) 1997-07-29 1997-10-01 Zeneca Ltd Heterocyclic compounds
GB9902989D0 (en) 1999-02-11 1999-03-31 Zeneca Ltd Heterocyclic derivatives

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US5004743A (en) * 1987-11-25 1991-04-02 Merck Frosst Canada, Inc. Pyridyl styrene dialkanoic acids as anti-leukotriene agents
CA2083957A1 (en) * 1990-06-07 1991-12-08 Robert A. Daines Pyridyl-benzoic acid derivatives for treating leukotriene-related diseases

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CA2119467A1 (en) 1993-04-01
JPH06510786A (en) 1994-12-01
AU2573592A (en) 1993-04-27
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AP333A (en) 1994-04-25
IL103205A0 (en) 1993-02-21

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