Patent Application
20080004286
In an embodiment, the present invention provides a method of inhibiting HDM2 protein comprising administering a therapeutically acceptable amount of at least one compound of the chemical structure illustrated above or a pharmaceutically acceptable salt, solvate, ester, or prodrug thereof to a patient in need of such inhibition.
In another embodiment, this invention discloses a method of treatment of one or more diseases associated with HDM2, comprising administering a therapeutically effective amount of at least one compound illustrated above to a patient in need of such treatment.
In yet another embodiment, the present invention provides a method of treatment of one or more diseases associated with P53, comprising administering a therapeutically effective amount of at least one compound illustrated above to a patient in need of such treatment.
In still another embodiment, this invention discloses a method of treatment of one or more diseases associated with HDM2 protein interacting with P53 protein, comprising administering a therapeutically effective amount of at least one compound illustrated above to a patient in need of such treatment.
In another embodiment, the present invention provides a method of treating one or more diseases associated with HDM2, comprising administering to a mammal in need of such treatment
an amount of a first compound, wherein said first compound is selected from the group of compounds illustrated above; and
an amount of at least one second compound, wherein said second compound is an anti-cancer agent different from the first compound;
wherein the amounts of the first compound and the second compound result in a therapeutic effect.
In yet another embodiment, this invention discloses a method of treating one or more diseases associated with P53 protein, comprising administering to a mammal in need of such treatment
an amount of a first compound, wherein said first compound is selected from the group of compounds illustrated above; and
an amount of at least one second compound, wherein said second compound being an anti-cancer agent different from the first compound;
wherein the amounts of the first compound and the second compound result in a therapeutic effect.
In still yet another embodiment, the present invention provides a method of treating one or more diseases associated with HDM2 protein interacting with P53 protein, comprising administering to a mammal in need of such treatment
an amount of a first compound, wherein said first compound is selected from the group of compounds illustrated above; and
an amount of at least one second compound, wherein said second compound being an anti-cancer agent different from the first compound;
wherein the amounts of the first compound and the second compound result in a therapeutic effect.
In another embodiment, this invention discloses a method of treating a disease selected from the group consisting of:
carcinoma, including, but not limited to, of the bladder, breast, colon, rectum, endometrium, kidney, liver, lung, head and neck, esophagus, gall bladder, cervix, pancreas, prostrate, larynx, ovaries, stomach, uterus, sarcoma and thyroid cancer;
hematopoietic tumors of the lymphoid lineage, including leukemia, acute lymphocytic leukemia, chronic Iymphocytic leukemia, acute lymphoblastic leukemia, B-cell lymphoma, T-cell lymphoma, Hodgkins lymphoma, non-Hodgkins lymphoma, hairy cell lymphoma, mantle cell lymphoma, myeloma, and Burkett's lymphoma;
hematopoetic tumors of myeloid lineage, including acute and chronic myelogenous leukemias, myelodysplastic syndrome and promyelocytic leukemia;
tumors of mesenchymal origin, including fibrosarcoma and rhabdomyosarcoma;
tumors of the central and peripheral nervous system, including astrocytoma, neuroblastoma, glioma, and schwannomas; and
other tumors, including melanoma, skin (non-melanomal) cancer, mesothelioma (cells), seminoma, teratocarcinoma, osteosarcoma, xenoderoma pigmentosum, keratoctanthoma, thyroid follicular cancer and Kaposi's sarcoma.
In yet another embodiment the method according this invention further comprising radiation therapy, surgery, chemotherapy, biological therapy, hormone therapy, photodynamic therapy, or bone marrow transplant.
PI3K inhibitors
mTOR inhibitors, such as Rapamycin, Temsirolimus, and RAD001 and other anti-cancer (also know as anti-neoplastic) agents include but are not limited to ara-C, adriamycin, cytoxan, Carboplatin, Uracil mustard, Clormethine, Ifosfsmide, Melphalan, Chlorambucil, Pipobroman, Triethylenemelamine, Triethylenethiophosphoramine, Busulfan, Carmustine, Lomustine, Streptozocin, Dacarbazine, Floxuridine, Cytarabine, 6-Mercaptopurine, 6-Thioguanine, Fludarabine phosphate, Pentostatine, Vinblastine, Vincristine, Vindesine, Vinorelbine, Navelbine, Bleomycin, Dactinomycin, Daunorubicin, Doxorubicin, Epirubicin, teniposide, cytarabine, pemetrexed, Idarubicin, Mithramycin, Deoxycoformycin, Mitomycin-C, L-Asparaginase, Teniposide 17α-Ethinylestradiol, Diethylstilbestrol, Testosterone, Prednisone, Fluoxymesterone, Dromostanolone propionate, Testolactone, Megestrolacetate, Methylprednisolone, Methyltestosterone, Prednisolone, Triamcinolone, Chlorotrianisene, Hydroxyprogesterone, Aminoglutethimide, Estramustine, Flutamide Medroxyprogesteroneacetate, Toremifene, goserelin, Carboplatin, Hydroxyurea, Amsacrine, Procarbazine, Mitotane, Mitoxantrone, Levamisole, Drolloxafine, Hexamethylmelamine, Bexxar, Zevalin, Trisenox, Profimer, Thiotepa, Altretamine, Doxil, Ontak, Depocyt, Aranesp, Neupogen, Neulasta, Kepivance.
Equivalent names that all represent Human Double Minute 2 protein described above include, but are not limited to HDM2, hDM2, hdm2, Hdm2, Human Double Minute 2, HDM-2, hDM-2, hdm-2, Hdm-2, Human Double Minute-2, hDM two, hdm two, Hdm two, Human Double Minute two, human double minute two, HDM-two, hDM-two, hdm-two, Hdm-two, Human Double Minute-two, human double minute-two, hDM Two, hdm Two, Hdm Two, Human Double Minute Two, human double minute Two, HDM-Two, hDM-Two, hdm-Two, Hdm-Two, Human Double Minute-Two or human double minute Two.
Likewise, Mouse Double Minute 2 protein can be represented the same way as the Human Double Minute Two protein described above, but replacing the “H” or “Human” with “M” or “Mouse” respectively.
Equivalent names that all represent P53 protein described above include, but are not limited to P-53, P53, p-53, P 53, p 53 or P53.
As used above, and throughout this disclosure, the following terms, unless otherwise indicated, shall be understood to have the following meanings:
“Patient” includes both human and animals.
“Mammal” means humans and other mammalian animals.
The term “purified”, “in purified form” or “in isolated and purified form” for a compound refers to the physical state of said compound after being isolated from a synthetic process (e.g. from a reaction mixture), or natural source or combination thereof. Thus, the term “purified”, “in purified form” or “in isolated and purified form” for a compound refers to the physical state of said compound after being obtained from a purification process or processes described herein or well known to the skilled artisan (e.g., chromatography, recrystallization and the like), in sufficient purity to be characterizable by standard analytical techniques described herein or well known to the skilled artisan.
It should also be noted that any carbon as well as heteroatom with unsatisfied valences in the text, schemes, examples and Tables herein is assumed to have the sufficient number of hydrogen atom(s) to satisfy the valences.
As used herein, the term “composition” is intended to encompass a product comprising the specified ingredients in the specified amounts, as well as any product which results, directly or indirectly, from combination of the specified ingredients in the specified amounts.
Prodrugs and solvates of the compounds of the invention are also contemplated herein. A discussion of prodrugs is provided in T. Higuchi and V. Stella, Pro-drugs as Novel Delivery Systems (1987) 14 of the A.C.S. Symposium Series, and in Bioreversible Carriers in Drug Design, (1987) Edward B. Roche, ed., American Pharmaceutical Association and Pergamon Press. The term “prodrug” means a compound (e.g, a drug precursor) that is transformed in vivo to yield a compound illustrated above or a pharmaceutically acceptable salt, hydrate or solvate of the compound. The transformation may occur by various mechanisms (e.g., by metabolic or chemical processes), such as, for example, through hydrolysis in blood. A discussion of the use of prodrugs is provided by T. Higuchi and W. Stella, “Pro-drugs as Novel Delivery Systems,” Vol. 14 of the A.C.S. Symposium Series, and in Bioreversible Carriers in Drug Design, ed. Edward B. Roche, American Pharmaceutical Association and Pergamon Press, 1987.
For example, if a compound illustrated above or a pharmaceutically acceptable salt, hydrate or solvate of the compound contains a carboxylic acid functional group, a prodrug can comprise an ester formed by the replacement of the hydrogen atom of the acid group with a group such as, for example, (C1-C8)alkyl, (C2-C12)alkanoyloxymethyl, 1-(alkanoyloxy)ethyl having from 4 to 9 carbon atoms, 1-methyl-1-(alkanoyloxy)-ethyl having from 5 to 10 carbon atoms, alkoxycarbonyloxymethyl having from 3 to 6 carbon atoms, 1-(alkoxycarbonyloxy)ethyl having from 4 to 7 carbon atoms, 1-methyl-1-(alkoxycarbonyloxy)ethyl having from 5 to 8 carbon atoms, N-(alkoxycarbonyl)aminomethyl having from 3 to 9 carbon atoms, 1-(N-(alkoxycarbonyl)amino)ethyl having from 4 to 10 carbon atoms, 3-phthalidyl, 4-crotonolactonyl, gamma-butyrolacton-4-yl, di-N,N-(C1-C2)alkylamino(C2-C3)alkyl (such as β-dimethylaminoethyl), carbamoyl-(C1-C2)alkyl, N,N-di (C1-C2)alkylcarbamoyl-(C1-C2)alkyl and piperidino-, pyrrolidino- or morpholino(C2-C3)alkyl, and the like.
Similarly, if a compound illustrated above contains an alcohol functional group, a prodrug can be formed by the replacement of the hydrogen atom of the alcohol group with a group such as, for example, (C1-C6)alkanoyloxymethyl, 1-((C1-C6)alkanoyloxy)ethyl, 1-methyl-1-((C1-C6)alkanoyloxy)ethyl, (C1-C6)alkoxycarbonyloxymethyl, N-(C1-C6)alkoxycarbonylaminomethyl, succinoyl, (C1-C6)alkanoyl, α-amino(C1-C4)alkanyl, arylacyl and α-aminoacyl, or α-aminoacyl-α-aminoacyl, where each α-aminoacyl group is independently selected from the naturally occurring L-amino acids, P(O)(OH)2, —P(O)(O(C1-C6)alkyl)2 or glycosyl (the radical resulting from the removal of a hydroxyl group of the hemiacetal form of a carbohydrate), and the like.
If a compound illustrated above incorporates an amine functional group, a prodrug can be formed by the replacement of a hydrogen atom in the amine group with a group such as, for example, R-carbonyl, RO-carbonyl, NRR′-carbonyl where R and R′ are each independently (C1-C10)alkyl, (C3-C7) cycloalkyl, benzyl, or R-carbonyl is a natural α-aminoacyl or natural α-aminoacyl, —C(OH)C(O)OY1 wherein Y1 is H, (C1-C6)alkyl or benzyl, —C(OY2)Y3 wherein Y2 is (C1-C4)alkyl and Y3 is (C1-C6)alkyl, carboxy(C1-C6)alkyl, amino(C1-C4)alkyl or mono-N— or di-N,N—(C1-C6)alkylaminoalkyl, —C(Y4)Y5 wherein Y4 is H or methyl and Y5 is mono-N— or di-N,N—(C1-C6)alkylamino morpholino, piperidin-1-yl or pyrrolidin-1-yl, and the like.
One or more compounds of the invention may exist in unsolvated as well as solvated forms with pharmaceutically acceptable solvents such as water, ethanol, and the like, and it is intended that the invention embrace both solvated and unsolvated forms. “Solvate” means a physical association of a compound of this invention with one or more solvent molecules. This physical association involves varying degrees of ionic and covalent bonding, including hydrogen bonding In certain instances the solvate will be capable of isolation, for example when one or more solvent molecules are incorporated in the crystal lattice of the crystalline solid. “Solvate” encompasses both solution-phase and isolatable solvates. Non-limiting examples of suitable solvates include ethanolates, methanolates, and the like. “Hydrate” is a solvate wherein the solvent molecule is H2O.
One or more compounds of the invention may optionally be converted to a solvate. Preparation of solvates is generally known. Thus, for example, M. Caira et al, J. Pharmaceutical Sci., 93(3), 601-611 (2004) describe the preparation of the solvates of the antifungal fluconazole in ethyl acetate as well as from water. Similar preparations of solvates, hemisolvate, hydrates and the like are described by E. C. van Tonder et al, AAPS PharmSciTech., 5(1), article 12 (2004); and A. L. Bingham et al, Chem. Commun., 603-604 (2001). A typical, non-limiting, process involves dissolving the inventive compound in desired amounts of the desired solvent (organic or water or mixtures thereof) at a higher than ambient temperature, and cooling the solution at a rate sufficient to form crystals which are then isolated by standard methods. Analytical techniques such as, for example I. R. spectroscopy, show the presence of the solvent (or water) in the crystals as a solvate (or hydrate).
“Effective amount” or “therapeutically effective amount” is meant to describe an amount of compound or a composition of the present invention effective in inhibiting the above-noted diseases and thus producing the desired therapeutic, ameliorative, inhibitory, modulated, antagonistic, or preventative effect.
The compounds illustrated above can form salts which are also within the scope of this invention. Reference to a compound illustrated above herein is understood to include reference to salts thereof, unless otherwise indicated. The term “salt(s)”, as employed herein, denotes acidic salts formed with inorganic and/or organic acids, as well as basic salts formed with inorganic and/or organic bases. In addition, when a compound illustrated above contains both a basic moiety, such as, but not limited to a pyridine or imidazole, and an acidic moiety, such as, but not limited to a carboxylic acid, zwitterions (“inner salts”) may be formed and are included within the term “salt(s)” as used herein. Pharmaceutically acceptable (i.e., non-toxic, physiologically acceptable) salts are preferred, although other salts are also useful Salts of the compounds illustrated above may be formed, for example, by reacting a compound illustrated above with an amount of acid or base, such as an equivalent amount, in a medium such as one in which the salt precipitates or in an aqueous medium followed by lyophilization.
Exemplary acid addition salts include acetates, ascorbates, benzoates, benzenesulfonates, bisulfates, borates, butyrates, citrates, camphorates, camphorsulfonates, fumarates, hydrochlorides, hydrobromides, hydroiodides, lactates, maleates, methanesulfonates, naphthalenesulfonates, nitrates, oxalates, phosphates, propionates, salicylates, succinates, sulfates, tartarates, thiocyanates, toluenesulfonates (also known as tosylates,) and the like. Additionally, acids which are generally considered suitable for the formation of pharmaceutically useful salts from basic pharmaceutical compounds are discussed, for example, by P. Stahl et al, Camille G. (eds.) Handbook of Pharmaceutical Salts. Properties, Selection and Use. (2002) Zurich: Wiley-VCH; S. Berge et at Journal of Pharmaceutical Sciences (1977) 66(1) 1-19; P. Gould, International J. of Pharmaceutics (1986) 33 201-217; Anderson et al, The Practice of Medicinal Chemistry (1996), Academic Press, New York; and in The Orange Book (Food & Drug Administration, Washington, D.C. on their website). These disclosures are incorporated herein by reference thereto.
Exemplary basic salts include ammonium salts, alkali metal salts such as sodium, lithium, and potassium salts, alkaline earth metal salts such as calcium and magnesium salts, salts with organic bases (for example, organic amines) such as dicyclohexylamines, t-butyl amines, and salts with amino acids such as arginine, lysine and the like. Basic nitrogen-containing groups may be quarternized with agents such as lower alkyl halides (e.g. methyl, ethyl, and butyl chlorides, bromides and iodides), dialkyl sulfates (e.g. dimethyl, diethyl, and dibutyl sulfates), long chain halides (e.g. decyl, lauryl, and stearyl chlorides, bromides and iodides), aralkyl halides (e.g. benzyl and phenethyl bromides), and others.
All such acid salts and base salts are intended to be pharmaceutically acceptable salts within the scope of the invention and all acid and base salts are considered equivalent to the free forms of the corresponding compounds for purposes of the invention.
Pharmaceutically acceptable esters of the present compounds include the following groups: (1) carboxylic acid esters obtained by esterification of the hydroxy groups, in which the non-carbonyl moiety of the carboxylic acid portion of the ester grouping is selected from straight or branched chain alkyl (for example, acetyl, n-propyl, t-butyl, or n-butyl), alkoxyalkyl (for example, methoxymethyl), aralkyl (for example, benzyl), aryloxyalkyl (for example, phenoxymethyl), aryl (for example, phenyl optionally substituted with, for example, halogen, C1-4alkyl, or C1-4alkoxy or amino); (2) sulfonate esters, such as alkyl- or aralkylsulfonyl (for example, methanesulfonyl); (3) amino acid esters (for example, L-valyl or L-isoleucyl); (4) phosphonate esters and (5) mono-, di- or triphosphate esters. The phosphate esters may be further esterified by, for example, a C1-20 alcohol or reactive derivative thereof, or by a 2,3-di(C6-24)acyl glycerol.
Compounds illustrated above and salts, solvates, esters and prodrugs thereof, may exist in their tautomeric form (for example, as an amide or imino ether). All such tautomeric forms are contemplated herein as part of the present invention.
The compounds illustrated above may contain asymmetric or chiral centers, and, therefore, exist in different stereoisomeric forms. It is intended that all stereoisomeric forms of the compounds illustrated above as well as mixtures thereof, including racemic mixtures, form part of the present invention In addition, the present invention embraces all geometric and positional isomers. For example, if a compound illustrated above incorporates a double bond or a fused ring, both the cis- and trans-forms, as well as mixtures, are embraced within the scope of the invention.
Diastereomeric mixtures can be separated into their individual diastereomers on the basis of their physical chemical differences by methods well known to those skilled in the art, such as, for example, by chromatography and/or fractional crystallization. Enantiomers can be separated by converting the enantiomeric mixture into a diastereomeric mixture by reaction with an appropriate optically active compound (e.g., chiral auxiliary such as a chiral alcohol or Mosher's acid chloride), separating the diastereomers and converting (e.g., hydrolyzing) the individual diastereomers to the corresponding pure enantiomers. Also, some of the compounds illustrated above may be atropisomers (e.g., substituted biaryls) and are considered as part of this invention. Enantiomers can also be separated by use of chiral HPLC column.
It is also possible that the compounds illustrated above may exist in different tautomeric forms, and all such forms are embraced within the scope of the invention. Also, for example, all keto-enol and imine-enamine forms of the compounds are included in the invention.
All stereoisomers (for example, geometric isomers, optical isomers and the like) of the present compounds (including those of the salts, solvates, esters and prodrugs of the compounds as well as the salts, solvates and esters of the prodrugs), such as those which may exist due to asymmetric carbons on various substituents, including enantiomeric forms (which may exist even in the absence of asymmetric carbons), rotameric forms, atropisomers, and diastereomeric forms, are contemplated within the scope of this invention, as are positional isomers (such as, for example, 4-pyridyl and 3-pyridyl). (For example, if a compound illustrated above incorporates a double bond or a fused ring, both the cis- and trans-forms, as well as mixtures, are embraced within the scope of the invention. Also, for example, all keto-enol and imine-enamine forms of the compounds are included in the invention,) Individual stereoisomers of the compounds of the invention may, for example, be substantially free of other isomers, or may be admixed, for example, as racemates or with all other, or other selected, stereoisomers. The chiral centers of the present invention can have the S or R configuration as defined by the IUPAC 1974 Recommendations. The use of the terms “salt”, “solvate”, “ester”, “prodrug” and the like, is intended to equally apply to the salt, solvate, ester and prodrug of enantiomers, stereoisomers, rotamers, tautomers, positional isomers, racemates or prodrugs of the inventive compounds.
The present invention also embraces isotopically-labelled compounds of the present invention which are identical to those recited herein, but for the fact that one or more atoms are replaced by an atom having an atomic mass or mass number different from the atomic mass or mass number usually found in nature. Examples of isotopes that can be incorporated into compounds of the invention include isotopes of hydrogen, carbon, nitrogen, oxygen, phosphorus, fluorine and chlorine, such as 2H, 3H, 13C, 14C, 15N, 18O, 17O, 31P, 32P, 35S, 18F, and 36Cl, respectively.
Certain isotopically-labelled compounds illustrated above (e.g., those labeled with 3H and 14C) are useful in compound and/or substrate tissue distribution assays. Tritiated (i.e., 3H) and carbon-14 (i.e., 14C) isotopes are particularly preferred for their ease of preparation and detectability. Further, substitution with heavier isotopes such as deuterium (i.e., 2H) may afford certain therapeutic advantages resulting from greater metabolic stability (e.g., increased in vivo half-life or reduced dosage requirements) and hence may be preferred in some circumstances. Isotopically labelled compounds illustrated above can generally be prepared by following procedures analogous to those disclosed in the Schemes and/or in the Examples hereinbelow, by substituting an appropriate isotopically labelled reagent for a non-isotopically labelled reagent.
Polymorphic forms of the compounds illustrated above, and of the salts, solvates, esters and prodrugs of the compounds illustrated above, are intended to be included in the present invention.
The compounds illustrated above can be inhibitors or antagonists of the Human Double Minute 2 protein or Mouse Double Minute 2 protein interaction with P-53 protein and it can be activators of the P-53 protein in cells. Furthermore, the pharmacological properties of the compounds illustrated above can be used to treat or prevent cancer, treat or prevent other disease states associated with abnormal cell proliferation, and treat or prevent diseases resulting from inadequate levels of P53 protein in cells.
Those skilled in the art will realize that the term “cancer” to be the name for diseases in which the body's cells may become abnormal and divide without control.
The compounds illustrated above can be useful to the treatment of a variety of cancers, including, but not limited to: carcinoma, including, but not limited to, of the bladder, breast, colon, rectum, endometrium, kidney, liver, lung, head and neck, esophagus, gall bladder, cervix, pancreas, prostrate, larynx, ovaries, stomach, uterus, sarcoma and thyroid cancer;
hematopoietic tumors of the lymphoid lineage, including leukemia, acute lymphocytic leukemia, chronic lymphocytic leukemia, acute lymphoblastic leukemia, B-cell lymphoma, T-cell lymphoma, Hodgkins lymphoma, non-Hodgkins lymphoma, hairy cell lymphoma, mantle cell lymphoma, myeloma, and Burkett's lymphoma;
hematopoetic tumors of myeloid lineage, including acute and chronic myelogenous leukemias, myelodysplastic syndrome and promyelocytic leukemia;
tumors of mesenchymal origin, including fibrosarcoma and rhabdomyosarcoma;
tumors of the central and peripheral nervous system, including astrocytoma, neuroblastoma, glioma, and schwannomas; and
other tumors, including melanoma, skin (non-melanomal) cancer, mesothelioma (cells), seminoma, teratocarcinoma, osteosarcoma, xenoderoma pigmentosum, keratoctanthoma, thyroid follicular cancer and Kaposi's sarcoma.
Due to the key role of P53 in the regulation of cellular apoptosis (cell death), the compounds of Formula (I) could act as agent to induce cell death which may be useful in the treatment of any disease process which features abnormal cellular proliferation eg, cancers of various origin and tissue types, inflammation, immunological disorders.
Due to the key role of HDM2 and P53 in the regulation of cellular proliferation, the compounds illustrated above could act as reversible cytostatic agents, which may be useful in the treatment of any disease process which features abnormal cellular proliferation, e.g., benign prostrate hyperplasia, familial adenomatosis polyposis, neuro-fibromatosis, atherosclerosis, pulmonary fibrosis, arthritis, psoriasis, glomerulonephritis, restenosis following angioplasty, or vascular surgery, hypertrophic scar formation, inflammatory bowel disease, transplantation rejection, endotoxic shock, and fungal infections.
Compounds illustrated above may also be useful in the chemoprevention of cancer. Chemoprevention is defined as inhibiting the development of invasive cancer by either blocking the initiating mutagenic event or by blocking the progression of pre-malignant cells that have already suffered an insult or inhibiting tumor relapse,
Compounds illustrated above may also be useful in inhibiting tumor angiogenesis and metastasis.
A preferred dosage is about 0.001 to 500 mg/kg of body weight/day of the compound illustrated above. An especially preferred dosage is about 0.01 to 25 mg/kg of body weight/day of a compound illustrated above, or a pharmaceutically acceptable salt, solvate, ester or prodrug of said compound.
If formulated as a fixed dose such combination products employ the compounds of this invention within the dosage range described herein and the other pharmaceutically active agent or treatment within its dosage range.
Compounds illustrated above may also be administered sequentially with known anticancer or cytotoxic agents when a combination formulation is inappropriate. The invention is not limited in the sequence of administration; compounds illustrated above may be administered either prior to or after administration of the known anticancer or cytotoxic agent. Such techniques are within the skills of the persons skilled in the art as well as attending physicians.
Preferred compounds can exhibit IC50 or EC50 values of less than about 15 μm, preferably about 0.001 μm to about 15.0 μm, more preferably about 0.001 μm to about 9 μm, still more preferably about 0.001 μm to about 3 μm.
In yet another embodiment, the present invention discloses methods for preparing pharmaceutical compositions comprising the compounds illustrated above as an active ingredient. In the pharmaceutical compositions and methods of the present invention, the active ingredients will typically be administered in admixture with suitable carrier materials suitably selected with respect to the intended form of administration, i.e. oral tablets, capsules (either solid-filled, semi-solid filled or liquid filled), powders for constitution, oral gels, elixirs, dispersible granules, syrups, suspensions, and the like, and consistent with conventional pharmaceutical practices. For example, for oral administration in the form of tablets or capsules, the active drug component may be combined with any oral non-toxic pharmaceutically acceptable inert carrier, such as lactose, starch, sucrose, cellulose, magnesium stearate, dicalcium phosphate, calcium sulfate, talc, mannitol, ethyl alcohol (liquid forms) and the like. Moreover, when desired or needed, suitable binders, lubricants, disintegrating agents and coloring agents may also be incorporated in the mixture. Powders and tablets may be comprised of from about 5 to about 95 percent inventive composition. Suitable binders include starch, gelatin, natural sugars, corn sweeteners, natural and synthetic gums such as acacia, sodium alginate, carboxymethylcellulose, polyethylene glycol and waxes. Lubricants in these dosage forms include boric acid, sodium benzoate, sodium acetate, sodium chloride, and the like. Disintegrants include starch, methylcellulose, guar gum and the like. Sweetening and flavoring agents and preservatives may also be included where appropriate. Some of the terms noted above, namely disintegrants, diluents, lubricants, binders and the like, are discussed in more detail below.
Additionally, the compositions of the present invention may be formulated in sustained release form to provide the rate controlled release of any one or more of the components or active ingredients to optimize the therapeutic effects, i.e. anti-cell proliferation activity and the like. Suitable dosage forms for sustained release include layered tablets containing layers of varying disintegration rates or controlled release polymeric matrices impregnated with the active components and shaped in tablet form or capsules containing such impregnated or encapsulated porous polymeric matrices.
Liquid form preparations include solutions, suspensions and emulsions. For example, water or water-propylene glycol solutions may be included for parenteral injections or sweeteners and pacifiers may be added for oral solutions, suspensions and emulsions. Liquid form preparations may also include solutions for intranasal administration.
Aerosol preparations suitable for inhalation may include solutions and solids in powder form, which may be in combination with a pharmaceutically acceptable carrier such as inert compressed gas, e.g. nitrogen.
For preparing suppositories, a low melting wax such as a mixture of fatty acid glycerides such as cocoa butter is first melted, and the active ingredient is dispersed homogeneously therein by stirring or similar mixing. The molten homogeneous mixture is then poured into convenient sized molds, allowed to cool to solidify.
Also included are solid form preparations which are intended to be converted, shortly before use, to liquid form preparations for either oral or parenteral administration. Such liquid forms include solutions, suspensions and emulsions.
The compounds of the invention may also be deliverable transdermally. The transdermal compositions may take the form of creams, lotions, aerosols and/or emulsions and can be included in a transdermal patch of the matrix or reservoir type as are conventional in the art for this purpose.
Preferably the compound is administered orally.
Preferably, the pharmaceutical preparation is in a unit dosage form. In such form, the preparation is subdivided into suitably sized unit doses containing appropriate quantities of the active components, e.g., an effective amount to achieve the desired purpose.
The quantity of the inventive active composition in a unit dose of preparation may be generally varied or adjusted from about 1.0 milligram to about 1,000 milligrams, preferably from about 1.0 to about 500 milligrams, and typically from about 1 to about 250 milligrams, according to the particular application. The actual dosage employed may be varied depending upon the patient's age, sex, weight and severity of the condition being treated. Such techniques are well known to those skilled in the art.
The actual dosage employed may be varied depending upon the requirements of the patient and the severity of the condition being treated. Determination of the proper dosage regimen for a particular situation is within the skill of the art. For convenience, the total daily dosage may be divided and administered in portions during the day as required.
Generally, the human oral dosage form containing the active ingredients can be administered 1 or 2 times per day. The amount and frequency of the administration will be regulated according to the judgment of the attending clinician. A generally recommended daily dosage regimen for oral administration may range from about 1.0 milligram to about 1,000 milligrams per day, in single or divided doses.
In another embodiment, this invention provides the use of pharmaceutical compositions comprising the above-illustrated compounds as an active ingredient to treat cancer, abnormal cell proliferation, and other HDM2 or P53 associated diseases.
The pharmaceutical compositions generally additionally comprise a pharmaceutically acceptable carrier diluent, excipient or carrier (collectively referred to herein as carrier materials).
Yet another aspect of this invention is a method of preparing a kit comprising an amount of at least one compound illustrated above, or a pharmaceutically acceptable salt, solvate, ester, or prodrug of said compound and an amount of at least one anticancer therapy and/or anti-cancer agent listed above, wherein the amounts of the two or more ingredients result in desired therapeutic effect.
Still another aspect of this invention is the use of a kit comprising an amount of at least one compound illustrated above, or a pharmaceutically acceptable salt, solvate, ester, or prodrug of said compound and an amount of at least one anticancer therapy and/or anti-cancer agent listed above, wherein the amounts of the two or more ingredients result in desired therapeutic effect to treat a mammal in need thereof.
Capsule—refers to a special container or enclosure made of methyl cellulose, polyvinyl alcohols, or denatured gelatins or starch for holding or containing compositions comprising the active ingredients. Hard shell capsules are typically made of blends of relatively high gel strength bone and pork skin gelatins. The capsule itself may contain small amounts of dyes, opaquing agents, plasticizers and preservatives.
Tablet—refers to a compressed or molded solid dosage form containing the active ingredients with suitable diluents. The tablet can be prepared by compression of mixtures or granulations obtained by wet granulation, dry granulation or by compaction.
Oral gels—refer to the active ingredients dispersed or solubilized in a hydrophillic semi-solid matrix.
Powders for constitution refer to powder blends containing the active ingredients and suitable diluents which can be suspended in water or juices.
Diluent—refers to substances that usually make up the major portion of the composition or dosage form. Suitable diluents include sugars such as lactose, sucrose, mannitol and sorbitol; starches derived from wheat, corn, rice and potato; and celluloses such as microcrystalline cellulose. The amount of diluent in the composition can range from about 10 to about 90% by weight of the total composition, preferably from about 25 to about 75%, more preferably from about 30 to about 60% by weight, even more preferably from about 12 to about 60%.
Disintegrants—refers to materials added to the composition to help it break apart (disintegrate) and release the medicaments. Suitable disintegrants include starches; “cold water soluble” modified starches such as sodium carboxymethyl starch; natural and synthetic gums such as locust bean, karaya, guar, tragacanth and agar; cellulose derivatives such as methylcellulose and sodium carboxymethylcellulose; microcrystalline celluloses and cross-linked microcrystalline celluloses such as sodium croscarmellose; alginates such as alginic acid and sodium alginate; clays such as bentonites; and effervescent mixtures. The amount of disintegrant in the composition can range from about 2 to about 15% by weight of the composition, more preferably from about 4 to about 10% by weight.
Binders—refers to substances that bind or “glue” powders together and make them cohesive by forming granules, thus serving as the “adhesive” in the formulation Binders add cohesive strength already available in the diluent or bulking agent. Suitable binders include sugars such as sucrose; starches derived from wheat, corn rice and potato; natural gums such as acacia, gelatin and tragacanth; derivatives of seaweed such as alginic acid, sodium alginate and ammonium calcium alginate; cellulosic materials such as methylcellulose and sodium carboxymethylcellulose and hydroxypropylmethylcellulose; polyvinylpyrrolidone; and inorganics such as magnesium aluminum silicate. The amount of binder in the composition can range from about 2 to about 20% by weight of the composition, more preferably from about 3 to about 10% by weight, even more preferably from about 3 to about 6% by weight.
Lubricant—refers to a substance added to the dosage form to enable the tablet, granules, etc. after it has been compressed, to release from the mold or die by reducing friction or wear Suitable lubricants include metallic stearates such as magnesium stearate, calcium stearate or potassium stearate; stearic acid; high melting point waxes; and water soluble lubricants such as sodium chloride, sodium benzoate, sodium acetate, sodium oleate, polyethylene glycols and d,l-leucine. Lubricants are usually added at the very last step before compression, since they must be present on the surfaces of the granules and in between them and the parts of the tablet press. The amount of lubricant in the composition can range from about 0.2 to about 5% by weight of the composition, preferably from about 0.5 to about 2%, more preferably from about 0.3 to about 1.5% by weight.
Glidents—materials that prevent caking and improve the flow characteristics of granulations, so that flow is smooth and uniform. Suitable glidents include silicon dioxide and talc. The amount of glident in the composition can range from about 0.1% to about 5% by weight of the total composition, preferably from about 0.5 to about 2% by weight.
Coloring agents—excipients that provide coloration to the composition or the dosage form. Such excipients can include food grade dyes and food grade dyes adsorbed onto a suitable adsorbent such as clay or aluminum oxide. The amount of the coloring agent can vary from about 0.1 to about 5% by weight of the composition, preferably from about 0.1 to about 1%.
In yet another embodiment, the present invention discloses methods for preparing pharmaceutical compositions comprising the compounds illustrated above as an active ingredient. In the pharmaceutical compositions and methods of the present invention, the active ingredients will typically be administered in admixture with suitable carrier materials suitably selected with respect to the intended form of administration, i.e. oral tablets, capsules (either solid-filled, semi-solid filled or liquid filled), powders for constitution, oral gels, elixirs, dispersible granules, syrups, suspensions, and the like, and consistent with conventional pharmaceutical practices. For example, for oral administration in the form of tablets or capsules, the active drug component may be combined with any oral non-toxic pharmaceutically acceptable inert carrier, such as lactose, starch, sucrose, cellulose, magnesium stearate, dicalcium phosphate, calcium sulfate, talc, mannitol, ethyl alcohol (liquid forms) and the like. Moreover, when desired or needed, suitable binders, lubricants, disintegrating agents and coloring agents may also be incorporated in the mixture. Powders and tablets may be comprised of from about 5 to about 95 percent inventive composition. Suitable binders include starch, gelatin, natural sugars, corn sweeteners, natural and synthetic gums such as acacia, sodium alginate, carboxymethylcellulose, polyethylene glycol and waxes. Lubricants in these dosage forms include boric acid, sodium benzoate, sodium acetate, sodium chloride, and the like. Disintegrants include starch, methylcellulose, guar gum and the like. Sweetening and flavoring agents and preservatives may also be included where appropriate. Some of the terms noted above, namely disintegrants, diluents, lubricants, binders and the like, are discussed in more detail below.
Additionally, the compositions of the present invention may be formulated in sustained release form to provide the rate controlled release of any one or more of the components or active ingredients to optimize the therapeutic effects, i.e. anti-cell proliferation activity and the like. Suitable dosage forms for sustained release include layered tablets containing layers of varying disintegration rates or controlled release polymeric matrices impregnated with the active components and shaped in tablet form or capsules containing such impregnated or encapsulated porous polymeric matrices.
Liquid form preparations include solutions, suspensions and emulsions. For example, water or water-propylene glycol solutions may be included for parenteral injections or sweeteners and pacifiers may be added for oral solutions, suspensions and emulsions. Liquid form preparations may also include solutions for intranasal administration.
Aerosol preparations suitable for inhalation may include solutions and solids in powder form, which may be in combination with a pharmaceutically acceptable carrier such as inert compressed gas, e.g. nitrogen.
For preparing suppositories, a low melting wax such as a mixture of fatty acid glycerides such as cocoa butter is first melted, and the active ingredient is dispersed homogeneously therein by stirring or similar mixing. The molten homogeneous mixture is then poured into convenient sized molds, allowed to cool to solidify.
Also included are solid form preparations which are intended to be converted, shortly before use, to liquid form preparations for either oral or parenteral administration. Such liquid forms include solutions, suspensions and emulsions.
The compounds of the invention may also be deliverable transdermally. The transdermal compositions may take the form of creams, lotions, aerosols and/or emulsions and can be included in a transdermal patch of the matrix or reservoir type as are conventional in the art for this purpose.
Preferably the compound is administered orally.
Preferably, the pharmaceutical preparation is in a unit dosage form. In such form, the preparation is subdivided into suitably sized unit doses containing appropriate quantities of the active components, e.g., an effective amount to achieve the desired purpose.
The quantity of the inventive active composition in a unit dose of preparation may be generally varied or adjusted from about 1.0 milligram to about 1,000 milligrams, preferably from about 1.0 to about 500 milligrams, and typically from about 1 to about 250 milligrams, according to the particular application. The actual dosage employed may be varied depending upon the patient's age, sex, weight and severity of the condition being treated. Such techniques are well known to those skilled in the art.
The actual dosage employed may be varied depending upon the requirements of the patient and the severity of the condition being treated. Determination of the proper dosage regimen for a particular situation is within the skill of the art. For convenience, the total daily dosage may be divided and administered in portions during the day as required.
Generally, the human oral dosage form containing the active ingredients can be administered 1 or 2 times per day. The amount and frequency of the administration will be regulated according to the judgment of the attending clinician. A generally recommended daily dosage regimen for oral administration may range from about 1.0 milligram to about 1,000 milligrams per day, in single or divided doses.
Bioavailability—refers to the rate and extent to which the active drug ingredient or therapeutic moiety is absorbed into the systemic circulation from an administered dosage form as compared to a standard or control.
Conventional methods for preparing tablets are known. Such methods include dry methods such as direct compression and compression of granulation produced by compaction, or wet methods or other special procedures. Conventional methods for making other forms for administration such as, for example, capsules, suppositories and the like are also well known.
The invention disclosed herein is exemplified by the following preparations and examples which should not be construed to limit the scope of the disclosure. Alternative mechanistic pathways and analogous structures will be apparent to those skilled in the art.
Unless otherwise stated, the following abbreviations have the stated meanings in the Examples below:
Compounds used in the present invention illustrated above are prepared by methods known in the art, for example, according to the general reaction sequence shown in Scheme 1 and the preparative example following it:
To a solution of sodium methoxide (62.4 g, 1.16 mol) prepared from 600 mL of methanol was added 3-hydroxypyridine (100 g, 1.05 mol). Upon addition of benzyl bromide (375 mL, 3.15 mol) the solution was refluxed for overnight. After cooling to room temperature, sodium borohydride (79.4 g, 2.1 mol) was added in portions. The solvent was removed in vacuo and the residue was stirred with water 650 mL, potassium carbonate 64 g, and ether 800 mL for 1 hour to give two homogeneous liquid phase. The ether phase was isolated, dried over potassium carbonate and evaporated in vacuo to give brown oil. To a solution of this oil in ether 20 mL was added slowly and with vigorous stirring pet. ether 2.1 L and celite 521 35 g, and stirring was continued for additional 30 min. The filtrate was evaporated in-vacuo to give Benzyl-1,2,5,6-tetrahydro-3-pyridyl benzyl ether as the desired material (294 g, 100%).
A solution of Benzyl-1,2,5,6-tetrahydro-3-pyridyl benzyl ether (1, 294 g, 1.05 mol) in 48% HBr (385 mL, 7.77 mol) was refluxed for 3 hours. After cooling to room temperature the reaction mixture was extracted with ether (4×300 mL). The aqueous layer was evaporated in vacuo to give an oil, which was crystallized (butanone) to give 1-Benzyl-3,3-dihydroxypiperidine hydrobromide as the desired material (129 g. 43%).
To a 1-benzyl-3-piperidone HBr salt (2, 464 g, 1.61 mol) suspended in CH2Cl2 3.5 L was added triethylamine (247 mL, 1.77 mol), then stirred for 3 hours. The resultant mixture was washed with H2O (3.5 L×2) and 4 L of brine, then dried over MgSO4, filtered and CH2Cl2 was removed to give 1-Benzyl-3-piperidone as the desired material (305 g, 100%).
Use of 7 phenols to prepare 7 derivatives (4):
Sodium hydroxide (212 g, 5.28 mol) was added to stirred solution of 4-phenyl phenol (100 g, 0.588 mol) in anhydrous tetrahydrofuran 3 L. After 3 hours, 1-benzyl-3-piperidone (3, 444 g, 2.35 mol) was added, the mixture was cooled to 0° C. and anhydrous chloroform (282 mL, 2.52 mol) was added dropwise. The reaction mixture was maintained at 0° C. for 1 hour and then heated to 40° C. for 2˜3 h, stirred overnight at room temperature. Tetrahydrofuran was removed under reduced pressure. The residue was suspended in water (3 L) and washed with diethyl ether (3 L). The aqueous layer was acidified with 6N HCl to pH 5, filtered and washed with CH2Cl2 to give 1-Benzyl-3-(biphenyl-4-yloxy)-piperidine-3-carboxylic acid as the desired material (156 g, 68.5%).
Sodium hydroxide (290 g, 7.26 mol) was added to stirred solution of 4-Methoxyphenol (100 g, 0.8 mol) in anhydrous tetrahydrofuran (3 L). After 3 hours, 1-benzyl-3-piperidone (3, 610 g, 3.22 mol) was added, the mixture was cooled to 0° C. and anhydrous chloroform (386 mL, 4.84 mol) was added dropwise. The reaction mixture was maintained at 0° C. for 1 hour and then heated to 40° C. for 2˜3 h, stirred overnight at room temperature. Tetrahydrofuran was removed under reduced pressure. The residue was suspended in water (3 L) and washed with diethyl ether (3 L). The aqueous layer was acidified with 6N HCl to pH 5, filtered and washed with CH2Cl2 to give a 1-Benzyl-3-(4-methoxy-phenoxy)-piperidine-3-carboxylic acid as the desired material (135 g, 49.0%)
Sodium hydroxide (260 g, 6.5 mol) was added to stirred solution of p-cresol (78 g, 0.72 mol) in anhydrous tetrahydrofuran 3 L. After 3 hours, 1-benzyl-3-piperidone (3, 547 g, 2.89 mol) was added, the mixture was cooled to 0° C. and anhydrous chloroform (347 mL, 4.33 mol) was added dropwise. The reaction mixture was maintained at 0° C. for 1 hour and then heated to 40° C. for 2˜3 h, stirred for overnight at room temperature. Tetrahydrofuran was removed under reduced pressure. The residue was suspended in water (2.5 L) and washed with diethyl ether (2.5 L). The aqueous layer was acidified with 6N HCl to pH 5, filtered and washed with CH2Cl2 to give 1-Benzyl-3-p-tolyloxy-piperidine-3-carboxylic acid as the desired material (120 g, 52.0%).
Sodium hydroxide (381 g, 9.53 mol) was added to stirred solution of 4-Chlorophenol (136 g, 1.06 mol) in anhydrous tetrahydrofuran (3 L). After 3 hours, 1-benzyl-3-piperidone (3, 801 g, 4.23 mol) was added, the mixture was cooled to 0° C. and anhydrous chloroform (508 mL, 6.35 mol) was added dropwise. The reaction mixture was maintained at 0° C. for 1 hour and then heated to 40° C. for 2˜3 h, stirred overnight at room temperature. Tetrahydrofuran was removed under reduced pressure. The residue was suspended in water (3 L) and washed with diethyl ether (3 L). The aqueous layer was acidified with 6N HCl to pH 5, filtered and washed with CH2Cl2 to give 1-Benzyl-3-(4-chloro-phenoxy)-piperidine-3-carboxylic acid as the desired material (210 g, 57.4%).
Sodium hydroxide (222 g, 5.55 mol) was added to stirred solution of 4-hydroxybenzotri-fluoride (100 g, 0.62 mol) in anhydrous tetrahydrofuran (3 L). After 3 hours, 1-benzyl-3-piperidone (3, 467 g, 2.47 mol) was added, the mixture was cooled to 0° C. and anhydrous chloroform (296 mL, 3.7 mol) was added dropwise. The reaction mixture was maintained at 0° C. for 1 hour and then allowed to 40° C. for 2˜3 h, stirred for overnight at room temperature. Tetrahydrofuran was removed under reduced pressure. The residue was suspended in water (3 L) and washed with diethyl ether (3 L). The aqueous layer was acidified with 6 N HCl by pH 7, filtered and washed with CH2Cl2 to give 1-Benzyl-3-(4-trifluoromethyl-phenoxy)-piperidine-3-carboxylic acid as the desired material (146 g, 62.4%)
Sodium hydroxide (212 g, 5.28 mol) was added to stirred solution of 3-phenyl phenol (100 g, 0.588 mol) in anhydrous tetrahydrofuran (3 L). After 3 hours, 1-benzyl-3-piperidone (3, 444 g, 2.35 mol) was added, the mixture was cooled to 0° C. and anhydrous chloroform (282 mL, 2.52 mol) was added dropwise. The reaction mixture was maintained at 0° C. for 1 hour and then allowed to 40° C. for 2˜3 hours, stirred for overnight at room temperature. Tetrahydrofuran was removed under reduced pressure. The residue was suspended in water (3 L) and washed with diethyl ether (3 L). The aqueous layer was acidified with 6N HCl to pH 5, filtered and washed with CH2Cl2 to give a 1-Benzyl-3-(biphenyl-3-yloxy)-piperidine-3-carboxylic acid as the desired material (80 g, 35.2%).
Sodium hydroxide (332 g, 8.3 mol) was added to stirred solution of o-Cresol (100 g, 0.925 mol) in anhydrous tetrahydrofuran (2 L). After 3 hours, 1-benzyl-3-piperidone (3, 700 g, 3.67 mol) was added, the mixture was cooled to 0° C. and anhydrous chloroform (440 mL, 5.55 mol) was added dropwise. The reaction mixture was maintained at 0° C. for 1 hour and then heated to 60° C. for 2˜3 h, stirred overnight at room temperature. Tetrahydrofuran was removed under reduced pressure. The residue was suspended in water (2.5 L) and washed with diethyl ether (2.5 L). The aqueous layer was acidified with 6N HCl by pH 7, extracted with methylene chloride and dried over MgSO4. The crude mixture (380 g) was suspended in ethyl acetate (4 L) and cyclohexylamine (170 mL) was added. The mixture was stirred for 1 hour and stored in refrigerator for 2 days. The precipitate was filtered and washed with CH2Cl2. The salt (100 g) was suspended in methylene chloride (1 L), 6N HCl (43 mL, 0.26 mol) was added, then solid was filtered and washed with methylene chloride and diethyl ether to give 1-Benzyl-3-o-tolyloxy-piperidine-3-carboxylic acid as the desired material (40 g, 13.3%)
To 4 (1 eq, 18 mmol, 6.9 g) and N,N-diisopropylethylamine (5 eq, 91 mmol, 15.8 mL) completely dissolved in 25% ethanol/75% ethyl acetate (400 mL) was added a solution of di-tertbutyl dicarbonate (1 eq, 18 mmol, 4.0 g) in ethyl acetate (50 mL) followed by 5% palladium on carbon (30 wt %, 2.0 g) at room temperature. The reaction vessel was sealed with a septum, purged with argon, and hydrogen gas was bubbled through the solvent for 2 minutes. The reaction mixture was stirred under a hydrogen gas atmosphere at room temperature for 15 hours, then filtered through celite and concentrated in vacuo to give 5 as an off-white solid in the form of the corresponding diisopropylethylammonium salt which was used without further purification.
To 5, the product of step 1, (0.1 mmol) in N,N-dimethylformamide (0.67 mL) and N,N-diisopropylethylamine (3.0 eq, 0.3 mmol, 52 uL) was added 1-hydroxybenzotriazole (1.0 eq, 0.1 mmol, 14 mg), 6 (1.5 eq, 0.15 mmol, 29 mg), and polystyrene-bound carbodiimide resin, loading: 1.3 mmol/g (3.0 eq, 0.3 mmol, 231 mg). The mixture was shaken overnight at room temperature and scavenged with MP-trisamine and MP-isocyanate resins (excess) in tetrahydrofuran (3 mL) for 2 h. The resins were removed by filtration and the solvent removed in vacuo. The crude reaction mixture was dissolved in 4N hydrochloric acid in 1,4-dioxane (3 mL) and shaken at room temperature for 2 hours followed by evaporation in vacuo. The crude residue (7) was used without further purification.
To 7, the product of step 2, (1.0 eq, 0.2 mmol, 100 mg), 8 (1.5 eq, 0.3 mmol, 58 mg), and 1-hydroxybenzotriazole (1.0 eq, 0.2 mmol, 27 mg) in N,N-dimethylformamide (6.7 mL) and N,N-diisopropylethylamine (4.0 eq, 0.8 mmol, 140 uL) was added. Polystyrene-bound carbodiimide resin, loading: 1.3 mmol/g (3.0 eq, 0.6 mmol, 462 mg) was added and shaken overnight at room temperature. The resin was removed by filtration, the solvent removed in vacuo, and the crude residue was purified by HPLC-MS to give the target compound of preparation 1 as the TFA-salt. The solid was dissolved in an acetonitrile/H2O solution (1:1, 1.0 mL total) and 1.0 N hydrochloric acid (200 uL) and lyophilized to give the target compound of preparation 1 (9) in the form of the corresponding hydrochloric acid-salt (M+: 636.2) The inventive compounds can readily be evaluated to determine activity at the HDM2 protein by known methods such as the fluorescence polarization screening assay that measures the inhibitory concentration that achieves 50% of maximal activity (FP IC50) and the dissociation constant for inhibitor binding (FP Ki). [Zhang et al., J. Analytical Biochemistry 331: 138-146 (2004)].
Additionally, compounds are tested for activity at the HDM2 protein using the Cell Viability Assay, which measures the number of viable cells in culture after treatment with the inventive compound for a certain period of time e.g. 72 hours based on quantitation of the ATP present (Cell Viability. IC50). [CellTiter-Glo® Luminescent Cell Viability Assay from Promega].
Compounds of the present application exhibit FP IC50, FP Ki, and Cell Viability IC50 values less than 50.0 μM.
Compounds used in this invention were prepared by essentially the same procedures given in the preparative examples above.
The HDM2 inhibitory activities for representative compounds are shown in Table 1 below.
From these test results, it would be apparent to the skilled artisan that the compounds of the invention have utility in treating diseases associated with HDM2 protein and inadequate levels of P53 protein, which include, but is not limited to diseases that result in excessive cell proliferation such as cancer.
| Number | Date | Country | |
|---|---|---|---|
| 60818128 | Jun 2006 | US |
