Classifications

• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K31/00—Medicinal preparations containing organic active ingredients
  • A61K31/33—Heterocyclic compounds
  • A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
  • A61K31/435—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with one nitrogen as the only ring hetero atom
  • A61K31/4353—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with one nitrogen as the only ring hetero atom ortho- or peri-condensed with heterocyclic ring systems
  • A61K31/437—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with one nitrogen as the only ring hetero atom ortho- or peri-condensed with heterocyclic ring systems the heterocyclic ring system containing a five-membered ring having nitrogen as a ring hetero atom, e.g. indolizine, beta-carboline
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K31/00—Medicinal preparations containing organic active ingredients
  • A61K31/33—Heterocyclic compounds
  • A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
  • A61K31/495—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with two or more nitrogen atoms as the only ring heteroatoms, e.g. piperazine or tetrazines
  • A61K31/505—Pyrimidines; Hydrogenated pyrimidines, e.g. trimethoprim
  • A61K31/519—Pyrimidines; Hydrogenated pyrimidines, e.g. trimethoprim ortho- or peri-condensed with heterocyclic rings
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
  • A61P25/00—Drugs for disorders of the nervous system
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
  • A61P35/00—Antineoplastic agents
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
  • A61P35/00—Antineoplastic agents
  • A61P35/02—Antineoplastic agents specific for leukemia
• • 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
  • C07D471/00—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, at least one ring being a six-membered ring with one nitrogen atom, not provided for by groups C07D451/00 - C07D463/00
  • C07D471/02—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, at least one ring being a six-membered ring with one nitrogen atom, not provided for by groups C07D451/00 - C07D463/00 in which the condensed system contains two hetero rings
  • C07D471/04—Ortho-condensed systems
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07D—HETEROCYCLIC COMPOUNDS
  • C07D487/00—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, not provided for by groups C07D451/00 - C07D477/00
  • C07D487/02—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, not provided for by groups C07D451/00 - C07D477/00 in which the condensed system contains two hetero rings
  • C07D487/04—Ortho-condensed systems
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07D—HETEROCYCLIC COMPOUNDS
  • C07D519/00—Heterocyclic compounds containing more than one system of two or more relevant hetero rings condensed among themselves or condensed with a common carbocyclic ring system not provided for in groups C07D453/00 or C07D455/00

Definitions

• the present invention generally relates to compounds having activity as inhibitors of MAP kinase-interacting kinase (Mnk), for example Mnk1 and Mnk2, as well as to related compositions and methods for utilizing the inventive compounds as therapeutic agents for treatment of Mnk dependent diseases, including the treatment of cancer.
• Mnk MAP kinase-interacting kinase
• Eukaryotic initiation factor 4E is a general translation factor but it has the potential to enhance preferentially the translation of messenger RNAs (mRNAs) that lead to production of malignancy-associated proteins. This selectivity may relate to an increased requirement for eIF4E and its binding partners for the translation of mRNAs containing extensive secondary structure in their 5′-untranslated regions (5′-UTRs). These mRNAs include those encoding certain proteins that control cell cycle progression and tumorigenesis. Under normal cellular conditions the translation of these malignancy-associated mRNAs is suppressed as the availability of active eIF4E is limited; however, their levels can increase when eIF4E is over-expressed or hyperactivated. Elevated levels of eIF4E have been found in many types of tumors and cancer cell lines including cancers of the colon, breast, bladder, lung, prostate, gastrointestinal tract, head and neck, Hodgkin's lymphomas and neuroblastomas.
• eIF4F cap-dependent translation
• eIF4F an initiation factor complex including eIF4E, the scaffold protein eIF4G, and the RNA helicase eIF4A.
• the scaffold protein, eIF4G also recruits the 40S ribosomal subunit to the mRNA via its interaction with eIF3 and binds eIF4B, a protein that aids the RNA-helicase function of eIF4A, thus facilitating the translation of mRNAs that contain structured 5′-UTRs.
• the availability of eIF4E as part of the eIF4F complex is a limiting factor in controlling the rate of translation, and therefore eIF4E is an important regulator of mRNA translation.
• PI3K/Akt/mTOR phosphoinositide 3-kinase
• PTEN phosphatase and tensin homologue deleted on chromosome ten
• Akt/mTOR mammalian target of rapamycin
• Deregulated signaling through the PI3K/PTEN/Akt/mTOR pathway is often the result of genetic alterations in critical components of this pathway and/or mutations at upstream growth factor receptors or signaling components.
• PI3K initiates a cascade of events when activated by, for example, extracellular growth factors, mitogens, cytokines and/or receptors, PDK1 activates Akt, which in turn phosphorylates and inactivates the tumor suppressor complex comprising TSC1 and 2 (tuberous sclerosis complex 1/2), resulting in the activation of mTORC1 (target of rapamycin complex 1) by Rheb-GTP. Activation of PDK1 and Akt by PI3Ks is negatively regulated by PTEN.
• PTEN is a critical tumor suppressor gene and is often mutated or silenced in human cancers. Its loss results in activation of Akt and increases downstream mTORC1 signaling.
• mTOR complex1 mTORC1
• mTORC1 regulates the eIF4F complex assembly that is critical for the translation of mRNAs associated with cell growth, prevention of apoptosis and transformation. mTORC1 achieves this by phosphorylation and inactivation of 4E-BPs and the subsequent dissociation of 4E-BPs from eIF4E.
• mTORC1 also promotes activation of the translational activator, S6K, which phosphorylates the ribosomal protein S6 and other substrates, including eIF4B.
• S6K translational activator
• mTORC1 signaling is inhibited by rapamycin and its analogues (rapalogs), although these compounds act allosterically, rather than directly inhibiting mTOR kinase activity.
• Akt/Akt/mTOR pathway Given the importance of the PI3K/Akt/mTOR pathway in regulating mRNA translation of genes that encode for pro-oncogenic proteins and activated mTORC1 signaling in a high proportion of cancers, these kinases have been actively pursued as oncology drug targets. A number of pharmacological inhibitors have been identified, some of which have reached advanced clinical stages. However, it has recently become clear that the mTOR pathway participates in a complicated feedback loop that can impair activation of Akt. It has been shown that prolonged treatment of cancer cells or patients with mTOR inhibitors causes elevated PI3K activity that leads to phosphorylation of Akt and eIF4E, and promotes cancer cell survival. eIF4E, acting downstream of Akt and mTOR, recapitulates Akt's action in tumorigenesis and drug resistance, and Akt signaling via eIF4E is an important mechanism of oncogenesis and drug resistance in vivo.
• eIF4E is also the target of the Ras/Raf/MAP signaling cascade which is activated by growth factors and for the stress-activated p38 MAP kinase pathway. Erk1/2 and p38 then phosphorylate MAP kinase-interacting kinase 1 (Mnk1) and MAP kinase-interacting kinase 2 (Mnk2).
• Mnk1 MAP kinase-interacting kinase 1
• Mnk2 MAP kinase-interacting kinase 2
• the Erk pathway is also activated in many cancers, reflecting, for example, activating mutations in Ras (found in around 20% of tumors) or loss of function of the Ras GTPase-activator protein NF1.
• Mnk1 and Mnk2 are threonine/serine protein kinases and specifically phosphorylate serine 209 (Ser209) of eIF4E within the eIF4F complex, by virtue of the interaction between eIF4E and the Mnks, which serves to recruit Mnks to act on eIF4E.
• Mice with mutated eIF4E, in which Ser209 is replaced by alanine shows no eIF4E phosphorylation and significantly attenuated tumor growth.
• Mnk activity is necessary for eIF4E-mediated oncogenic transformation, it is dispensable for normal development. Pharmacologically inhibiting Mnks thus presents an attractive therapeutic strategy for cancer.
• the present invention is directed to compounds that inhibit or modulate the activity of Mnk, as well as stereoisomers, tautomers and pharmaceutically acceptable salts of such compounds.
• the invention also is directed to pharmaceutically acceptable compositions containing such compounds and associated methods for treating conditions that would benefit from Mnk inhibition, such as cancer.
• the invention is directed to compounds according to Formula I as well as to a stereoisomer, tautomer or pharmaceutically acceptable salt of such compounds, wherein
• a 1 and A 2 independently are —N— or —CR 5a ;
• a 3 is —N— or —CR 6 ;
• a 4 is —N— or —CR 5b ;
• a 5 is —NR 7 or —CR 7a R 7b ;
• a 6 and A 7 are independently —N— or —CR 8a when --------- represents a bond, otherwise A 6 and A 7 are independently —NR 8 or —CR 8a R 8b ;
• W 1 is O, S, NH, NO(R 9 ) or CR 9a R 9b ;
• n and n independently are 1, 2 or 3;
• R 1 and R 2 independently are —H, —NHR 10 , NHR 10 -alkylene, (C 1 -C 8 )alkyl, (C 2 -C 8 )alkenyl, (C 2 -C 8 )alkynyl, cycloalkyl, heterocyclyl, heteroaryl, aryl, arylalkylene, cycloalkylalkylene, heterocyclylalkylene or heteroarylalkylene; or
• R 1 and R 2 together with the carbon atom to which they are attached form a cycloalkyl or heterocyclyl ring;
• R 3 and R 4 independently are —H, —OH, —CN, —SR 10 , S(O) 2 (C 1 -C 8 ) alkyl, —C(O)NHR 10 , —C(O)NR 10 R 10 , —NHR 10 , —NR 10 R 10 , NHR 10 -alkylene, NR 10 R 10 -alkylene, (C 1 -C 8 )alkyl, (C 2 -C 8 )alkenyl, (C 2 -C 8 )alkynyl, (C 1 -C 8 )haloalkyl, —O(C 1 -C 8 )alkyl, —O(C 1 -C 8 )haloalkyl, —O(C 1 -C 8 )alkyleneNHR 10 , —O(C 1 -C 8 )alkyleneNR 10 R 10 , cycloalkyl, heterocyclyl, heteroaryl, aryl,
• R 5a is —H, —OH, halogen, —CN, acetyl, —(C 1 -C 8 )alkyl, —S(C 1 -C 8 )alkyl, —(C 2 -C 8 )alkenyl, —(C 2 -C 8 )alkynyl, —O(C 1 -C 8 )alkyl, (C 1 -C 8 )haloalkyl, —NHR 10 , —NR 10 R 10 , NHR 10 -alkylene, NR 10 R 10 -alkylene, or —O(C 1 -C 8 )haloalkyl;
• R 5b and R 6 is —H, —OH, —SH, —CN, —S(O) 2 R 10 , halogen, —S(C 1 -C 8 )alkyl, —NHR 10 , —NR 10 R 10 , (C 1 -C 8 )alkyl, (C 2 -C 8 )alkenyl, (C 2 -C 8 )alkynyl, (C 1 -C 8 )haloalkyl, —O(C 1 -C 8 )haloalkyl, —O(C 1 -C 8 )alkyl, —O(C 1 -C 8 )alkyl, —O(C 1 -C 8 )alkyleneNHR 10 , —O(C 1 -C 8 )alkyleneNR 10 R 10 , —(C 1 -C 8 )alkyleneNHR 10 , —(C 1 -C 8 )alkyleneNR 10 R 10
• R 7 is —H, —OH, acetyl, —(C 1 -C 8 )alkyl, —C(O)alkyl, —C(O)cycloalkyl, —C(O)O—(C 1 -C 8 )alkyl, cycloalkyl, aryl, heteroaryl or heterocyclyl;
• R 7a and R 7b independently are —H, —OH, acetyl, —(C 1 -C 8 )alkyl, —O(C 1 -C 8 )alkyl, —C(O)alkyl, —C(O)cycloalkyl, —C(O)O—(C 1 -C 8 )alkyl, cycloalkyl, aryl, heteroaryl or heterocyclyl;
• R 8 is —H, —OH, acetyl, (C 1 -C 8 )alkyl, cycloalkyl, heterocyclyl, heteroaryl or aryl;
• R 8a and R 8b independently are —H, —OH, —CN, acetyl, —SH, —S(O) 2 R 10 , halogen, —S(C 1 -C 8 )alkyl, —NHR 10 , —NR 10 R 10 , (C 1 -C 8 )alkyl, (C 1 -C 8 )haloalkyl, —O(C 1 -C 8 )alkyl, —O(C 1 -C 8 )alkylNHR 10 , —O(C 1 -C 8 )alkylNR 10 R 10 , —(C 1 -C 8 )alkylNHR 10 , —(C 1 -C 8 )alkylNR 10 R 10 , cycloalkyl, heterocyclyl, heteroaryl or aryl;
• R 9 , R 9a and R 9b are independently —H, (C 1 -C 8 )alkyl, (C 2 -C 8 )alkenyl, (C 2 -C 8 )alkynyl, cycloalkyl, heterocyclyl, heteroaryl, aryl, arylalkylene, cycloalkylalkylene, heterocyclylalkylene, or heteroarylalkylene, or
• R 9a and R 9b together with the carbon atom to which they are attached form a cycloalkyl or heterocyclyl ring;
• R 10 is —H, —OH, —C(O)O(C 1 -C 8 )alkyl, —C(O)(C 1 -C 8 )alkyl, —C(O)—NH 2 , —C(O)—NH(C 1 -C 8 )alkyl, NH 2 —C(O)-alkylene, —S(C 1 -C 8 )alkyl, acetyl, —(C 1 -C 8 )alkyl, (C 2 -C 8 )alkenyl, (C 2 -C 8 )alkynyl, —O(C 1 -C 8 )alkyl, (C 1 -C 8 ) haloalkyl, alkylcarbonylaminyl, alkylaminyl, —C(O)alkyl, —C(O)cycloalkyl, —C(O)O—(C 1 -C 8 )alkyl,
• any alkyl, cycloalkyl, heterocyclyl, heteroaryl, aryl, arylalkylene, cycloalkylalkylene, heterocyclylalkylene, heteroarylalkylene, alkylaminyl, alkylcarbonylaminyl, cycloalkylcarbonylaminyl, cycloalkylaminyl or heterocyclylaminyl is optionally substituted with 1, 2 or 3 groups selected from —OH, —CN, —SH, —S(O)NH 2 , —S(O)NH 2 , halogen, —NH 2 , —NH(C 1 -C 4 )alkyl, —N[(C 1 -C 4 )alkyl] 2 , —C(O)NH 2 , —COOH, —COOMe, acetyl, —(C 1 -C 8 )alkyl, —O(C 1 -C 8 )alkyl (
• the present invention also provides a pharmaceutical composition
• a pharmaceutical composition comprising (i) a therapeutically effective amount of at least one compound according to Formula I or a stereoisomer, a tautomer or a pharmaceutically acceptable salt thereof; (ii) in combination with a pharmaceutically acceptable carrier, diluent or excipient.
• Also provided by the present invention is a method for attenuating or inhibiting the activity of MnK in at least one cell overexpressing Mnk, comprising contacting the at least one cell with a compound according to claim 1 or a stereoisomer, tautomer or pharmaceutically acceptable salt thereof.
• At least one cell is a colon cancer cell, a gastric cancer cell, a thyroid cancer cell, a lung cancer cell, a leukemia cell, a B-cell lymphoma, a T-cell lymphoma, a hairy cell lymphoma, Hodgkin's lymphoma cell, non-Hodgkin's lymphoma cell, Burkitt's lymphoma cell, a pancreatic cancer cell, a melanoma cell, a multiple melanoma cell, a brain cancer cell, a CNS cancer cell, a renal cancer cell, a prostate cancer cell, an ovarian cancer cell, or a breast cancer cell.
• the invention provides a method for treating a Mnk dependent condition in a mammal in need thereof comprising administering to the mammal (i) a therapeutically effective amount of at least one compound according to claim 1 or a stereoisomer, tautomer or pharmaceutically acceptable salt thereof, or (ii) a pharmaceutical composition in accordance with the invention.
• Compounds and pharmaceutically acceptable formulations in accordance with the invention are useful for treating an Mnk dependent condition such as colon cancer, gastric cancer, thyroid cancer, lung cancer, leukemia, B-cell lymphoma, T-cell lymphoma, hairy cell lymphoma, Hodgkin's lymphoma, non-Hodgkin's lymphoma, Burkitt's lymphoma, pancreatic cancer, melanoma, multiple melanoma, brain cancer, CNS cancer, renal cancer, prostate cancer, ovarian cancer, or breast cancer.
• Mnk dependent condition such as colon cancer, gastric cancer, thyroid cancer, lung cancer, leukemia, B-cell lymphoma, T-cell lymphoma, hairy cell lymphoma, Hodgkin's lymphoma, non-Hodgkin's lymphoma, Burkitt's lymphoma, pancreatic cancer, melanoma, multiple melanoma, brain cancer, CNS cancer, renal cancer,
• Amino refers to the —NH 2 substituent.
• Aminocarbonyl refers to the —C(O)NH 2 substituent.
• Carboxyl refers to the —CO 2 H substituent.
• Carbonyl refers to a —C(O)— or —C( ⁇ O)— group. Both notations are used interchangeably within the specification.
• Cyanoalkylene refers to the -(alkylene)C ⁇ N substituent.
• Alcohol refers to the —C(O)CH 3 substituent.
• Haldroxyalkylene refers to the -(alkylene)OH substituent.
• Oxo refers to a ⁇ O substituent.
• Alkyl refers to a saturated, straight or branched hydrocarbon chain radical consisting solely of carbon and hydrogen atoms, having from one to twelve carbon atoms (C 1 -C 12 alkyl), from one to eight carbon atoms (C 1 -C 8 alkyl) or from one to six carbon atoms (C 1 -C 6 alkyl), and which is attached to the rest of the molecule by a single bond.
• alkyl groups include methyl, ethyl, n-propyl, 1-methylethyl (iso-propyl), n-butyl, n-pentyl, 1,1-dimethylethyl (t-butyl), 3-methylhexyl, 2-methylhexyl, and the like.
• “Lower alkyl” has the same meaning as alkyl defined above but having from one to four carbon atoms (C 1 -C 4 alkyl).
• Alkenyl refers to an unsaturated alkyl group having at least one double bond and from two to twelve carbon atoms (C 2 -C 12 alkenyl), from two to eight carbon atoms (C 2 -C 8 alkenyl) or from two to six carbon atoms (C 2 -C 6 alkenyl), and which is attached to the rest of the molecule by a single bond, e.g., ethenyl, propenyl, butenyl, pentenyl, hexenyl, and the like.
• Alkynyl refers to an unsaturated alkyl group having at least one triple bond and from two to twelve carbon atoms (C 2 -C 12 alkynyl), from two to ten carbon atoms (C 2 -C 10 alkynyl) from two to eight carbon atoms (C 2 -C 8 alkynyl) or from two to six carbon atoms (C 2 -C 6 alkynyl), and which is attached to the rest of the molecule by a single bond, e.g., ethynyl, propynyl, butynyl, pentynyl, hexynyl, and the like.
• Alkylene or “alkylene chain” refers to a straight or branched divalent hydrocarbon (alkyl) chain linking the rest of the molecule to a radical group, consisting solely of carbon and hydrogen, respectively.
• Alkylenes can have from one to twelve carbon atoms, e.g., methylene, ethylene, propylene, n-butylene, and the like.
• the alkylene chain is attached to the rest of the molecule through a single or double bond. The points of attachment of the alkylene chain to the rest of the molecule can be through one carbon or any two carbons within the chain.
• “Optionally substituted alkylene” refers to alkylene or substituted alkylene.
• Alkenylene refers to divalent alkene. Examples of alkenylene include without limitation, ethenylene (—CH ⁇ CH—) and all stereoisomeric and conformational isomeric forms thereof. “Substituted alkenylene” refers to divalent substituted alkene. “Optionally substituted alkenylene” refers to alkenylene or substituted alkenylene.
• Alkynylene refers to divalent alkyne. Examples of alkynylene include without limitation, ethynylene, propynylene. “Substituted alkynylene” refers to divalent substituted alkyne.
• Alkoxy refers to a radical of the formula —OR a where R a is an alkyl having the indicated number of carbon atoms as defined above.
• alkoxy groups include without limitation —O-methyl (methoxy), —O-ethyl (ethoxy), —O-propyl (propoxy), —O-isopropyl (iso propoxy) and the like.
• Alkylaminyl refers to a radical of the formula —NHR a or —NR a R a where each R a is, independently, an alkyl radical having the indicated number of carbon atoms as defined above.
• Cycloalkylaminyl refers to a radical of the formula —NHR a where R a is a cycloalkyl radical as defined herein.
• Alkylcarbonylaminyl refers to a radical of the formula —NHC(O)R a , where R a is an alkyl radical having the indicated number of carbon atoms as defined herein.
• Cycloalkylcarbonylaminyl refers to a radical of the formula —NHC(O)R a , where R a is a cycloalkyl radical as defined herein.
• Alkylaminocarbonyl refers to a radical of the formula —C(O)NHR a or —C(O)NR a R a , where each R a is independently, an alkyl radical having the indicated number of carbon atoms as defined herein.
• Cyclolkylaminocarbonyl refers to a radical of the formula —C(O)NHR a , where R a is a cycloalkyl radical as defined herein.
• Aryl refers to a hydrocarbon ring system radical comprising hydrogen, 6 to 18 carbon atoms and at least one aromatic ring.
• exemplary aryls are hydrocarbon ring system radical comprising hydrogen and 6 to 9 carbon atoms and at least one aromatic ring; hydrocarbon ring system radical comprising hydrogen and 9 to 12 carbon atoms and at least one aromatic ring; hydrocarbon ring system radical comprising hydrogen and 12 to 15 carbon atoms and at least one aromatic ring; or hydrocarbon ring system radical comprising hydrogen and 15 to 18 carbon atoms and at least one aromatic ring.
• the aryl radical may be a monocyclic, bicyclic, tricyclic or tetracyclic ring system, which may include fused or bridged ring systems.
• Aryl radicals include, but are not limited to, aryl radicals derived from aceanthrylene, acenaphthylene, acephenanthrylene, anthracene, azulene, benzene, chrysene, fluoranthene, fluorene, as-indacene, s-indacene, indane, indene, naphthalene, phenalene, phenanthrene, pleiadene, pyrene, and triphenylene.
• “Optionally substituted aryl” refers to a aryl group or a substituted aryl group.
• Alkylene denotes divalent aryl
• substituted arylene refers to divalent substituted aryl
• Aralkyl or “araalkylene” may be used interchangeably and refer to a radical of the formula —R b —R c where R b is an alkylene chain as defined herein and R c is one or more aryl radicals as defined herein, for example, benzyl, diphenylmethyl and the like.
• Cycloalkyl refers to a stable non-aromatic monocyclic or polycyclic hydrocarbon radical consisting solely of carbon and hydrogen atoms, which may include fused or bridged ring systems, having from three to fifteen carbon atoms, preferably having from three to ten carbon atoms, three to nine carbon atoms, three to eight carbon atoms, three to seven carbon atoms, three to six carbon atoms, three to five carbon atoms, a ring with four carbon atoms, or a ring with three carbon atoms.
• the cycloalkyl ring may be saturated or unsaturated and attached to the rest of the molecule by a single bond.
• Monocyclic radicals include, for example, cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, cycloheptyl, and cyclooctyl.
• Polycyclic radicals include, for example, adamantyl, norbornyl, decalinyl, 7,7-dimethyl-bicyclo[2.2.1]heptanyl, and the like.
• Cycloalkylalkylene or “cycloalkylalkyl” may be used interchangeably and refer to a radical of the formula —R b R e where R b is an alkylene chain as defined herein and R e is a cycloalkyl radical as defined herein.
• R b is further substituted with a cycloalkyl group, such that the cycloalkylalkylene comprises two cycloalkyl moieties.
• Cyclopropylalkylene and cyclobutylalkylene are exemplary cycloalkylalkylene groups, comprising at least one cyclopropyl or at least one cyclobutyl group, respectively.
• fused refers to any ring structure described herein which is fused to an existing ring structure in the compounds of the invention.
• the fused ring is a heterocyclyl ring or a heteroaryl ring
• any carbon atom on the existing ring structure which becomes part of the fused heterocyclyl ring or the fused heteroaryl ring may be replaced with a nitrogen atom.
• Halo or “halogen” refers to bromo (bromine), chloro (chlorine), fluoro (fluorine), or iodo (iodine).
• Haloalkyl refers to an alkyl radical having the indicated number of carbon atoms, as defined herein, wherein one or more hydrogen atoms of the alkyl group are substituted with a halogen (halo radicals), as defined above.
• the halogen atoms can be the same or different.
• Exemplary haloalkyls are trifluoromethyl, difluoromethyl, trichloromethyl, 2,2,2-trifluoroethyl, 1,2-difluoroethyl, 3-bromo-2-fluoropropyl, 1,2-dibromoethyl, and the like.
• Heterocyclyl refers to a stable 3- to 18-membered saturated or unsaturated radical which consists of two to twelve carbon atoms and from one to six heteroatoms, for example, one to five heteroatoms, one to four heteroatoms, one to three heteroatoms, or one to two heteroatoms selected from the group consisting of nitrogen, oxygen and sulfur.
• Exemplary heterocycles include without limitation stable 3-15 membered saturated or unsaturated radicals, stable 3-12 membered saturated or unsaturated radicals, stable 3-9 membered saturated or unsaturated radicals, stable 8-membered saturated or unsaturated radicals, stable 7-membered saturated or unsaturated radicals, stable 6-membered saturated or unsaturated radicals, or stable 5-membered saturated or unsaturated radicals.
• the heterocyclyl radical may be a monocyclic, bicyclic, tricyclic or tetracyclic ring system, which may include fused or bridged ring systems; and the nitrogen, carbon or sulfur atoms in the heterocyclyl radical may be optionally oxidized; the nitrogen atom may be optionally quaternized; and the heterocyclyl radical may be partially or fully saturated.
• non-aromatic heterocyclyl radicals include, but are not limited to, azetidinyl, dioxolanyl, thienyl[1,3]dithianyl, decahydroisoquinolyl, imidazolinyl, imidazolidinyl, isothiazolidinyl, isoxazolidinyl, morpholinyl, octahydroindolyl, octahydroisoindolyl, 2-oxopiperazinyl, 2-oxopiperidinyl, 2-oxopyrrolidinyl, oxazolidinyl, piperidinyl, piperazinyl, 4-piperidonyl, pyrrolidinyl, pyrazolidinyl, quinuclidinyl, thiazolidinyl, tetrahydrofuryl, thietanyl, trithianyl, tetrahydropyranyl, thio
• Heterocyclylalkyl or “heterocyclylalkylene” refers to a radical of the formula —R b R f where R b is an alkylene chain as defined herein and R f is a heterocyclyl radical as defined above, and if the heterocyclyl is a nitrogen-containing heterocyclyl, the heterocyclyl may be attached to the alkyl radical at the nitrogen atom.
• Heteroaryl or “heteroarylene” refers to a 5- to 14-membered ring system radical comprising hydrogen atoms, one to thirteen carbon atoms, one to six heteroatoms selected from the group consisting of nitrogen, oxygen and sulfur, and at least one aromatic ring.
• the heteroaryl radical may be a stable 5-12 membered ring, a stable 5-10 membered ring, a stable 5-9 membered ring, a stable 5-8 membered ring, a stable 5-7 membered ring, or a stable 6 membered ring that comprises at least 1 heteroatom, at least 2 heteroatoms, at least 3 heteroatoms, at least 4 heteroatoms, at least 5 heteroatoms or at least 6 heteroatoms.
• Heteroaryls may be a monocyclic, bicyclic, tricyclic or tetracyclic ring system, which may include fused or bridged ring systems; and the nitrogen, carbon or sulfur atoms in the heteroaryl radical may be optionally oxidized; the nitrogen atom may be optionally quaternized.
• the heteroatom may be a member of an aromatic or non-aromatic ring, provided at least one ring in the heteroaryl is aromatic.
• Examples include, but are not limited to, azepinyl, acridinyl, benzimidazolyl, benzothiazolyl, benzindolyl, benzodioxolyl, benzofuranyl, benzooxazolyl, benzothiazolyl, benzothiadiazolyl, benzo[b][1,4]dioxepinyl, 1,4-benzodioxanyl, benzonaphthofuranyl, benzoxazolyl, benzodioxolyl, benzodioxinyl, benzopyranyl, benzopyranonyl, benzofuranyl, benzofuranonyl, benzothienyl (benzothiophenyl), benzotriazolyl, benzo[4,6]imidazo[1,2-a]pyridinyl, carbazolyl, cinnolinyl, dibenzofuranyl, dibenzothiophenyl, furany
• Heteroarylalkyl or “heteroarylalkylene” refers to a radical of the formula —R b R g where R b is an alkylene chain as defined above and R g is a heteroaryl radical as defined above.
• Thioalkyl refers to a radical of the formula —SR a where R a is an alkyl radical as defined above containing one to twelve carbon atoms, at least 1-10 carbon atoms, at least 1-8 carbon atoms, at least 1-6 carbon atoms, or at least 1-4 carbon atoms.
• Heterocyclylaminyl refers to a radical of the formula —NHR f where R f is a heterocyclyl radical as defined above.
• Thione refers to a ⁇ S group attached to a carbon atom of a saturated or unsaturated (C 3 -C 8 )cyclic or a (C 1 -C 8 )acyclic moiety.
• “Sulfoxide” refers to a —S(O)— group in which the sulfur atom is covalently attached to two carbon atoms.
• “Sulfone” refers to a —S(O) 2 — group in which a hexavalent sulfur is attached to each of the two oxygen atoms through double bonds and is further attached to two carbon atoms through single covalent bonds.
• oxime refers to a —C(R a ) ⁇ N—OR a radical where R a is hydrogen, lower alkyl, an alkylene or arylene group as defined above.
• the compound of the invention can exist in various isomeric forms, as well as in one or more tautomeric forms, including both single tautomers and mixtures of tautomers.
• the term “isomer” is intended to encompass all isomeric forms of a compound of this invention, including tautomeric forms of the compound.
• a compound of the invention can be in the form of an optical isomer or a diastereomer. Accordingly, the invention encompasses compounds of the invention and their uses as described herein in the form of their optical isomers, diastereoisomers and mixtures thereof, including a racemic mixture.
• Optical isomers of the compounds of the invention can be obtained by known techniques such as asymmetric synthesis, chiral chromatography, or via chemical separation of stereoisomers through the employment of optically active resolving agents.
• stereoisomer means one stereoisomer of a compound that is substantially free of other stereoisomers of that compound.
• a stereomerically pure compound having one chiral center will be substantially free of the opposite enantiomer of the compound.
• a stereomerically pure compound having two chiral centers will be substantially free of other diastereomers of the compound.
• a typical stereomerically pure compound comprises greater than about 80% by weight of one stereoisomer of the compound and less than about 20% by weight of other stereoisomers of the compound, for example greater than about 90% by weight of one stereoisomer of the compound and less than about 10% by weight of the other stereoisomers of the compound, or greater than about 95% by weight of one stereoisomer of the compound and less than about 5% by weight of the other stereoisomers of the compound, or greater than about 97% by weight of one stereoisomer of the compound and less than about 3% by weight of the other stereoisomers of the compound.
• the depicted structure controls. Additionally, if the stereochemistry of a structure or a portion of a structure is not indicated with, for example, bold or dashed lines, the structure or portion of the structure is to be interpreted as encompassing all stereoisomers of it. In some cases, however, where more than one chiral center exists, the structures and names may be represented as single enantiomers to help describe the relative stereochemistry. Those skilled in the art of organic synthesis will know if the compounds are prepared as single enantiomers from the methods used to prepare them.
• a “pharmaceutically acceptable salt” is a pharmaceutically acceptable, organic or inorganic acid or base salt of a compound of the invention.
• Representative pharmaceutically acceptable salts include, e.g., alkali metal salts, alkali earth salts, ammonium salts, water-soluble and water-insoluble salts, such as the acetate, amsonate (4,4-diaminostilbene-2,2-disulfonate), benzenesulfonate, benzonate, bicarbonate, bisulfate, bitartrate, borate, bromide, butyrate, calcium, calcium edetate, camsylate, carbonate, chloride, citrate, clavulariate, dihydrochloride, edetate, edisylate, estolate, esylate, fiunarate, gluceptate, gluconate, glutamate, glycollylarsanilate, hexafluorophosphate, hexylresorcinate,
• treat refers to the amelioration or eradication of a disease or symptoms associated with a disease. In certain embodiments, such terms refer to minimizing the spread or worsening of the disease resulting from the administration of one or more prophylactic or therapeutic agents to a patient with such a disease. In the context of the present invention the terms “treat”, “treating” and “treatment” also refer to:
• the terms “disease” and “condition” may be used interchangeably or may be different in that the particular malady or condition may not have a known causative agent (so that etiology has not yet been worked out) and it is therefore not yet recognized as a disease but only as an undesirable condition or syndrome, wherein a more or less specific set of symptoms have been identified by clinicians.
• a therapeutically effective amount with respect to a compound of the invention means that amount of therapeutic agent alone, or in combination with other therapies, that provides a therapeutic benefit in the treatment or prevention of a disease.
• the term can encompass an amount that improves overall therapy, reduces or avoids symptoms or causes of disease, or enhances the therapeutic efficacy or synergies with another therapeutic agent.
• Mnk MAP kinase interacting kinase
• Modulation in its various forms, is intended to encompass inhibition, antagonism, partial antagonism, activation, agonism and/or partial agonism of the activity associated with Mnk.
• Mnk inhibitors are compounds that bind to, partially or totally block stimulation, decrease, prevent, delay activation, inactivate, desensitize, or down regulate signal transduction. The ability of a compound to modulate Mnk activity can be demonstrated in an enzymatic assay or a cell-based assay.
• a “patient” or subject” includes an animal, such as a human, cow, horse, sheep, lamb, pig, chicken, turkey, quail, cat, dog, mouse, rat, rabbit or guinea pig.
• the animal can be a mammal such as a non-primate and a primate (e.g., monkey and human).
• a patient is a human, such as a human infant, child, adolescent or adult.
• prodrug refers to a precursor of a drug, a compound which upon administration to a patient, must undergo chemical conversion by metabolic processes before becoming an active pharmacological agent.
• exemplary prodrugs of compounds in accordance with Formula I are esters, acetamides, and amides.
• the present invention generally is directed to compounds encompassed by the genus of Formula I, a stereoisomer, a tautomer or a pharmaceutically acceptable salt thereof.
• a 1 and A 2 are —CR 5a .
• a 1 is —N— and A 2 is —CH or —C(Me). In yet another embodiment A 1 is —CH and A 2 is —N—.
• a 3 is —CR 6 .
• a 4 is —CR 5b .
• a 5 is an —NR 7 .
• a 5 is —CR 7a R 7b .
• a 6 and A 7 are —CR 8a .
• W 1 is O.
• subscript “m” and subscript “n” are 1.
• subscript “m” is 2 and subscript “n” is 1. In yet another embodiment subscripts “m” and “n” are both 2.
• R 1 and R 2 independently are —H, (C 1 -C 8 )alkyl, —NHR 10 or NHR 10 -alkylene.
• R 1 and R 2 are —H, —NH 2 , —NH(Me), —N(Me) 2 , methyl, ethyl, propyl, isopropyl, butyl, sec-butyl, t-butyl, isobutyl, pentyl, hexyl, methylene-NH[C(O)OMe] or ethylene-NH[C(O)OMe].
• R 1 or R 2 is a halogen substituted (C 1 -C 8 )alkyl, (C 2 -C 8 )alkenyl, (C 2 -C 8 )alkynyl, cycloalkyl, heterocyclyl, heteroaryl, aryl, arylalkylene, cycloalkylalkylene, heterocyclylalkylene or heteroarylalkylene.
• R 1 and R 2 together with the carbon atom to which they are attached form a cycloalkyl ring.
• the cycloalkyl ring is cyclobutyl, cyclopentyl, cyclohexyl, 2,2-dimethylcyclobutyl, 4-aminocyclohexyl, 4-methylcyclohexyl, 4-ethylcyclohexyl, 2,2-difluoroethyl-4-cyclohexyl, 4,4-difluorocyclohexy, 4-cyanocyclohexyl, 4-trifluoromethylcyclohexyl, 4-hydroxycyclohexyl, 3-hydroxycyclopently, 3-aminocyclopentyl or a 3-methylcyclopentyl ring system.
• the cycloalkyl ring is cyclobutyl, cyclopentyl or cyclohexyl.
• R 1 and R 2 together with the carbon atom to which they are attached form a heterocyclyl ring.
• the heterocyclyl ring is 1-(2,2-difluoroethyl)piperidine or 1-methylpiperidine.
• R 3 , R 4 , and R 5b independently are —O(C 1 -C 8 )alkyleneNHR 10 or —O(C 1 -C 8 )alkyleneNR 10 R 10 .
• R 3 , R 4 , and R 5b independently are —O(CH 2 )NH 2 , —O(CH 2 ) 2 NH 2 , —O(CH 2 ) 3 NH 2 , —O(CH 2 )NH(Me), —O(CH 2 ) 2 NH(Me) or —O(CH 2 ) 3 NH(Me).
• R 3 , R 4 , and R Sb independently are —O(CH 2 )N(Me) 2 , —O(CH 2 ) 2 N(Me) 2 or —O(CH 2 ) 3 N(Me) 2 .
• R 3 , R 4 , and R 5b independently are —H, —OH, CN, —C(O)NH 2 , —C(O)NH(Me), —NH 2 , —NH(Me), —N(Me) 2 , —NH 2 -methylene, —NH 2 -ethylene, methyl, ethyl, propyl, n-butyl, i-butyl, t-butyl, hexyl, methoxy, ethoxy, propoxy, butoxy, chloromethyl, fluoromethyl, dichloromethyl, chlorofluoromethyl, trifluoromethyl, chloroethyl, 1,2-dichloroethyl or chlorofluoroethyl.
• R 5a is —H, —OH, halogen, —CN, acetyl or —(C 1 -C 8 )alkyl. In another embodiment R 5a is methyl, ethyl, propyl or butyl.
• R 6 is amino, methylamino, —CN, —O(C 1 -C 8 )alkyleneNHR 10 , —O(C 1 -C 8 )alkyleneNR 10 R 10 , —(C 1 -C 8 )alkyleneNHR 10 or —(C 1 -C 8 )alkyleneNR 10 R 10 .
• R 6 is —H, —OH, chlorine, fluorine, methyl ethyl, propyl and the like.
• R 7 , R 7a and R 7b are hydrogen.
• R 8 , R 8a and R 8b independently are —H, heterocyclyl, heteroaryl or aryl.
• R 8 , R 8a and R 8b independently are pyridine, 1-(2, 2-difluoroethyl)piperidine, 1-difluoromethyl piperidine, N-methylpyrazole, thioimidazole, piperidine or N-methylpiperidine, phenyl, 2-chlorophenyl, 3-chlorophenyl, 4-chlorophenyl, 2-cyanophenyl, 3-cyanophenyl or 4-cyanophenyl.
• R 8a and R 8b independently are —H, —OH, —CN, Cl, F, methyl, ethyl propyl, chloromethyl, fluoromethyl, chlorofluoromethyl, —NH(Me) or —N(Me) 2 .
• R 9 , R 9a and R 9b are independently —H or —(C 1 -C 8 )alkyl.
• R 10 is —H, —OH, methyl, ethyl, propyl, butyl, t-butyl, acetyl, —COOMe, —NH 2 , —NH(Me), or —N(Me) 2 .
• a 1 is —N
• a 2 , A 3 , A 4 , A 6 , and A 7 are —CH
• a 5 is —NH
• W 1 is O
• subscripts “m” and “n” are both 1.
• a 1 is —N
• a 2 is —CH
• a 3 is —C(Cl), —C(F), —C(Me) or —C(OH)
• a 4 , A 6 , and A 7 are —CH
• a 5 is —NH
• W 1 is O
• subscripts “m” and “n” are both 1.
• a 1 is —N
• a 2 is —CH
• a 3 is —C(alkyl) or —C(halogen)
• a 4 is —CH
• a 5 is —NH
• a 6 and A 7 are both —CR 8a
• W 1 is O
• subscripts “m” and “n” are both 1.
• —CR 8a is —C(pyridyl), —C(N-methylpyrazole), —C(2-chlorophenyl) or —C(2-cyanophenyl).
• a 1 is —N
• a 2 , A 3 , A 4 are —CH
• a 5 is —NH
• a 6 and A 7 are —N—
• W 1 is O
• subscripts “m” and “n” are both 1.
• one of A 6 or A 7 is —N and the other of A 6 or A 7 is —CH, —C(pyridyl), —C(N-methylpyrazole), —C(2-chlorophenyl) or —C(2-cyanophenyl).
• a 1 is —N
• a 2 , A 3 , A 4 are —CH
• a 5 is —NH
• a 6 and A 7 independently are CH 2 — or —CH(Me)
• W 1 is O
• subscripts “m” and “n” are both 1.
• one of A 6 or A 7 is —CH 2 or —CH(Me) and the other of A 6 or A 7 is —NH.
• subscript “m” is 2 and subscript “n” is 1, A 1 is —N, A 2 , A 3 and A 4 are —CH, A 5 is —NH and A 6 and A 7 are —CH 2 .
• inventive compounds according to Formula I may be isotopically-labeled by having one or more atoms replaced by an atom having a different atomic mass or mass number.
• isotopes that can be incorporated into compounds of according to Formula I include isotopes of hydrogen, carbon, nitrogen, oxygen, phosphorous, fluorine, chlorine, or iodine.
• Illustrative of such isotopes are 2 H, 3 H, 11 C, 13 C, 14 C, 13 N, 15 N, 15 O, 17 O, 18 O, 31 P, 32 P, 35 S, 18 F, 36 Cl, 123 I, and 125 I, respectively.
• radiolabeled compounds can be used to measure the biodistribution, tissue concentration and the kinetics of transport and excretion from biological tissues including a subject to which such a labeled compound is administered. Labeled compounds are also used to determine therapeutic effectiveness, the site or mode of action, and the binding affinity of a candidate therapeutic to a pharmacologically important target. Certain radioactive-labeled compounds according to Formula I, therefore, are useful in drug and/or tissue distribution studies.
• the radioactive isotopes tritium, i.e. 3 H, and carbon-14, i.e. 14 C, are particularly useful for this purpose in view of their ease of incorporation and ready means of detection.
• substitution with heavier isotopes such as deuterium, i.e. 2 H affords certain therapeutic advantages resulting from the greater metabolic stability, for example, increased in vivo half-life of compounds containing deuterium.
• substitution of hydrogen with deuterium may reduce dose required for therapeutic effect, and hence may be preferred in a discovery or clinical setting.
• Isotopically-labeled compounds according to Formula I can generally be prepared by conventional techniques known to those skilled in the art or by processes analogous to those described in the Preparations and Examples section as set out below using an appropriate isotopic-labeling reagent.
• Embodiments of the invention disclosed herein are also meant to encompass the in vivo metabolic products of compounds according to Formula I. Such products may result from, for example, the oxidation, reduction, hydrolysis, amidation, esterification, and like processes primarily due to enzymatic activity upon administration of a compound of the invention. Accordingly, the invention includes compounds that are produced as by-products of enzymatic or non-enzymatic activity on an inventive compound following the administration of such a compound to a mammal for a period of time sufficient to yield a metabolic product.
• Metabolic products particularly pharmaceutically active metabolites are typically identified by administering a radiolabeled compound of the invention in a detectable dose to a subject, such as rat, mouse, guinea pig, monkey, or human, for a sufficient period of time during which metabolism occurs, and isolating the metabolic products from urine, blood or other biological samples that are obtained from the subject receiving the radiolabeled compound.
• a subject such as rat, mouse, guinea pig, monkey, or human
• the invention also provides pharmaceutically acceptable salt forms of Formula I compounds. Encompassed within the scope of the invention are both acid and base addition salts that are formed by contacting a pharmaceutically suitable acid or a pharmaceutically suitable base with a compound of the invention.
• a “pharmaceutically acceptable acid addition salt” refers to those salts which retain the biological effectiveness and properties of the free bases, which are not biologically or otherwise undesirable, and which are formed with inorganic acids such as, but are not limited to, hydrochloric acid, hydrobromic acid, sulfuric acid, nitric acid, phosphoric acid and the like, and organic acids such as, but not limited to, acetic acid, 2,2-dichloroacetic acid, adipic acid, alginic acid, ascorbic acid, aspartic acid, benzenesulfonic acid, benzoic acid, 4-acetamidobenzoic acid, camphoric acid, camphor-10-sulfonic acid, capric acid, caproic acid, caprylic acid, carbonic acid, cinnamic acid, citric acid, cyclamic acid, dodecylsulfuric acid, ethane-1,2-disulfonic acid, ethanesulfonic acid, 2-hydroxyethane
• a “pharmaceutically acceptable base addition salt” refers to those salts which retain the biological effectiveness and properties of the free acids, which are not biologically or otherwise undesirable. These salts are prepared by addition of an inorganic base or an organic base to the free acid. Salts derived from inorganic bases include, but are not limited to, the sodium, potassium, lithium, ammonium, calcium, magnesium, iron, zinc, copper, manganese, aluminum salts and the like. Preferred inorganic salts are the ammonium, sodium, potassium, calcium, and magnesium salts.
• Salts derived from organic bases include, but are not limited to, salts of primary, secondary, and tertiary amines, substituted amines including naturally occurring substituted amines, cyclic amines and basic ion exchange resins, such as ammonia, isopropylamine, trimethylamine, diethylamine, triethylamine, tripropylamine, diethanolamine, ethanolamine, deanol, 2-dimethylaminoethanol, 2-diethylaminoethanol, dicyclohexylamine, lysine, arginine, histidine, caffeine, procaine, hydrabamine, choline, betaine, benethamine, benzathine, ethylenediamine, glucosamine, methylglucamine, theobromine, triethanolamine, tromethamine, purines, piperazine, piperidine, N-ethylpiperidine, polyamine resins and the like.
• Particularly preferred organic bases are isoprop
• solvate refers to an aggregate that comprises one or more molecules of a compound of the invention with one or more molecules of solvent.
• the solvent may be water, in which case the solvate may be a hydrate.
• the solvent may be an organic solvent.
• the compounds of the present invention may exist as a hydrate, including a monohydrate, dihydrate, hemihydrate, sesquihydrate, trihydrate, tetrahydrate and the like, as well as the corresponding solvated forms.
• the compound of the invention may be true solvates, while in other cases, the compound of the invention may merely retain adventitious water or be a mixture of water plus some adventitious solvent.
• stereoisomer refers to a compound made up of the same atoms bonded by the same bonds but having different three-dimensional structures, which are not interchangeable.
• the present invention contemplates various stereoisomers and mixtures thereof and includes “enantiomers”, which refers to two stereoisomers whose molecules are nonsuperimposeable mirror images of one another.
• Compounds of the invention or their pharmaceutically acceptable salts may contain one or more asymmetric centers and may thus give rise to enantiomers, diastereomers, and other stereoisomeric forms that may be defined, in terms of absolute stereochemistry, as (R)- or (S)- or, as (D)- or (L)- for amino acids.
• the present invention is meant to include all such possible isomers, as well as their racemic and optically pure forms.
• Optically active (+) and ( ⁇ ), (R)- and (S)-, or (D)- and (L)-isomers may be prepared using chiral synthons or chiral reagents, or resolved using conventional techniques, for example, chromatography and fractional crystallization.
• tautomer refers to a proton shift from one atom of a molecule to another atom of the same molecule.
• W 1 is oxo and A5 is —NH
• the present invention provides tautomers of a Formula I compound as illustrated below:
• inventive compounds are synthesized using conventional synthetic methods, and more specifically using the general methods noted below. Specific synthetic protocols for compounds in accordance with the present invention are described in the Examples.
• a compounds according Formulae I are formulated as pharmaceutically acceptable compositions that contain a Formulae I compound in an amount effective to treat a particular disease or condition of interest upon administration of the pharmaceutical composition to a mammal.
• Pharmaceutical compositions in accordance with the present invention can comprise a Formulae I compound in combination with a pharmaceutically acceptable carrier, diluent or excipient.
• a “pharmaceutically acceptable carrier, diluent or excipient” includes without limitation any adjuvant, carrier, excipient, glidant, sweetening agent, diluent, preservative, dye/colorant, flavor enhancer, surfactant, wetting agent, dispersing agent, suspending agent, stabilizer, isotonic agent, solvent, or emulsifier which has been approved by the United States Food and Drug Administration as being acceptable for use in humans or domestic animals.
• a “mammal” includes humans and both domestic animals such as laboratory animals and household pets (e.g., cats, dogs, swine, cattle, sheep, goats, horses, rabbits), and non-domestic animals such as wildlife and the like.
• compositions of the invention can be prepared by combining a compound of the invention with an appropriate pharmaceutically acceptable carrier, diluent or excipient, and may be formulated into preparations in solid, semi-solid, liquid or gaseous forms, such as tablets, capsules, powders, granules, ointments, solutions, suppositories, injections, inhalants, gels, microspheres, and aerosols.
• Typical routes of administering such pharmaceutical compositions include, without limitation, oral, topical, transdermal, inhalation, parenteral, sublingual, buccal, rectal, vaginal, and intranasal.
• parenteral as used herein includes subcutaneous injections, intravenous, intramuscular, intrasternal injection or infusion techniques.
• Pharmaceutical compositions of the invention are formulated so as to allow the active ingredients contained therein to be bioavailable upon administration of the composition to a patient.
• Compositions that will be administered to a subject or patient take the form of one or more dosage units, where for example, a tablet may be a single dosage unit, and a container of a compound of the invention in aerosol form may hold a plurality of dosage units.
• Actual methods of preparing such dosage forms are known, or will be apparent, to those skilled in this art; for example, see Remington: The Science and Practice of Pharmacy, 20th Edition (Philadelphia College of Pharmacy and Science, 2000).
• the composition to be administered will, in any event, contain a therapeutically effective amount of a compound of the invention, or a pharmaceutically acceptable salt thereof, for treatment of a disease or condition of interest in accordance with the teachings of this invention.
• a pharmaceutical composition of the invention may be in the form of a solid or liquid.
• the carrier(s) are particulate, so that the compositions are, for example, in tablet or powder form.
• the carrier(s) may be liquid, with the compositions being, for example, an oral syrup, injectable liquid or an aerosol, which is useful in, for example, inhalatory administration.
• the pharmaceutical composition is preferably in either solid or liquid form, where semi-solid, semi-liquid, suspension and gel forms are included within the forms considered herein as either solid or liquid.
• the pharmaceutical composition may be formulated into a powder, granule, compressed tablet, pill, capsule, chewing gum, wafer or the like form.
• a solid composition will typically contain one or more inert diluents or edible carriers.
• binders such as carboxymethylcellulose, ethyl cellulose, microcrystalline cellulose, gum tragacanth or gelatin; excipients such as starch, lactose or dextrins, disintegrating agents such as alginic acid, sodium alginate, Primogel, corn starch and the like; lubricants such as magnesium stearate or Sterotex; glidants such as colloidal silicon dioxide; sweetening agents such as sucrose or saccharin; a flavoring agent such as peppermint, methyl salicylate or orange flavoring; and a coloring agent.
• excipients such as starch, lactose or dextrins, disintegrating agents such as alginic acid, sodium alginate, Primogel, corn starch and the like
• lubricants such as magnesium stearate or Sterotex
• glidants such as colloidal silicon dioxide
• sweetening agents such as sucrose or saccharin
• a flavoring agent such as peppermint, methyl sal
• the pharmaceutical composition when in the form of a capsule, for example, a gelatin capsule, it may contain, in addition to materials of the above type, a liquid carrier such as polyethylene glycol or oil.
• a liquid carrier such as polyethylene glycol or oil.
• the pharmaceutical composition may be in the form of a liquid, for example, an elixir, syrup, solution, emulsion or suspension.
• the liquid may be for oral administration or for delivery by injection, as two examples.
• preferred composition contain, in addition to the present compounds, one or more of a sweetening agent, preservatives, dye/colorant and flavor enhancer.
• a surfactant, preservative, wetting agent, dispersing agent, suspending agent, buffer, stabilizer and isotonic agent may be included.
• the liquid pharmaceutical compositions of the invention may include one or more of the following adjuvants: sterile diluents such as water for injection, saline solution, preferably physiological saline, Ringer's solution, isotonic sodium chloride, fixed oils such as synthetic mono or diglycerides which may serve as the solvent or suspending medium, polyethylene glycols, glycerin, propylene glycol or other solvents; antibacterial agents such as benzyl alcohol or methyl paraben; antioxidants such as ascorbic acid or sodium bisulfite; chelating agents such as ethylenediaminetetraacetic acid; buffers such as acetates, citrates or phosphates and agents for the adjustment of tonicity such as sodium chloride or dextrose.
• the parenteral preparation can be enclosed in ampoules, disposable syringes or multiple dose vials made of glass or plastic.
• Physiological saline is a preferred adjuvant.
• a liquid pharmaceutical composition of the invention intended for either parenteral or oral administration should contain an amount of a compound of the invention such that a suitable dosage will be obtained.
• the pharmaceutical composition of the invention may be intended for topical administration, in which case the carrier may suitably comprise a solution, emulsion, ointment or gel base.
• the base for example, may comprise one or more of the following: petrolatum, lanolin, polyethylene glycols, bee wax, mineral oil, diluents such as water and alcohol, and emulsifiers and stabilizers.
• Thickening agents may be present in a pharmaceutical composition for topical administration.
• the composition may include a transdermal patch or iontophoresis device.
• the pharmaceutical composition of the invention may be intended for rectal administration, in the form, for example, of a suppository, which will melt in the rectum and release the drug.
• the composition for rectal administration may contain an oleaginous base as a suitable nonirritating excipient.
• bases include, without limitation, lanolin, cocoa butter and polyethylene glycol.
• the pharmaceutical composition of the invention may include various materials, which modify the physical form of a solid or liquid dosage unit.
• the composition may include materials that form a coating shell around the active ingredients.
• the materials that form the coating shell are typically inert, and may be selected from, for example, sugar, shellac, and other enteric coating agents.
• the active ingredients may be encased in a gelatin capsule.
• the pharmaceutical composition of the invention in solid or liquid form may include an agent that binds to the compound of the invention and thereby assists in the delivery of the compound.
• Suitable agents that may act in this capacity include a monoclonal or polyclonal antibody, a protein or a liposome.
• the pharmaceutical composition of the invention may consist of dosage units that can be administered as an aerosol.
• aerosol is used to denote a variety of systems ranging from those of colloidal nature to systems consisting of pressurized packages. Delivery may be by a liquefied or compressed gas or by a suitable pump system that dispenses the active ingredients. Aerosols of compounds of the invention may be delivered in single phase, bi-phasic, or tri-phasic systems in order to deliver the active ingredient(s). Delivery of the aerosol includes the necessary container, activators, valves, subcontainers, and the like, which together may form a kit. One skilled in the art, without undue experimentation may determine preferred aerosols.
• compositions of the invention may be prepared by any methodology well known in the pharmaceutical art.
• a pharmaceutical composition intended to be administered by injection can be prepared by combining a compound of the invention with sterile, distilled water so as to form a solution.
• a surfactant may be added to facilitate the formation of a homogeneous solution or suspension.
• Surfactants are compounds that non-covalently interact with the compound of the invention so as to facilitate dissolution or homogeneous suspension of the compound in the aqueous delivery system.
• a pharmaceutical composition comprising a compound of Formula I is administered to a mammal in an amount sufficient to inhibit Mnk activity upon administration, and preferably with acceptable toxicity to the same.
• Mnk activity of Formula I compounds can be determined by one skilled in the art, for example, as described in the Examples below. Appropriate concentrations and dosages can be readily determined by one skilled in the art.
• the compounds of the invention are administered in a therapeutically effective amount, which will vary depending upon a variety of factors including the activity of the specific compound employed; the metabolic stability and length of action of the compound; the age, body weight, general health, sex, and diet of the patient; the mode and time of administration; the rate of excretion; the drug combination; the severity of the particular disorder or condition; and the subject undergoing therapy.
• Effective amount refers to that amount of a compound of the invention which, when administered to a mammal, preferably a human, is sufficient to effect treatment, as defined below, of a Mnk related condition or disease in the mammal, preferably a human.
• the amount of a compound of the invention which constitutes a “therapeutically effective amount” will vary depending on the compound, the condition and its severity, the manner of administration, and the age of the mammal to be treated, but can be determined routinely by one of ordinary skill in the art having regard to his own knowledge and to this disclosure.
• Compounds of the invention or pharmaceutically acceptable salt thereof may also be administered simultaneously with, prior to, or after administration of one or more other therapeutic agents.
• Such combination therapy includes administration of a single pharmaceutical dosage formulation which contains a compound of the invention and one or more additional active agents, as well as administration of the compound of the invention and each active agent in its own separate pharmaceutical dosage formulation.
• a compound of the invention and the other active agent can be administered to the patient together in a single oral dosage composition such as a tablet or capsule, or each agent administered in separate oral dosage formulations.
• the compounds of the invention and one or more additional active agents can be administered at essentially the same time, i.e., concurrently, or at separately staggered times, i.e., sequentially; combination therapy is understood to include all these regimens.
• the disclosed compounds are useful for inhibiting the activity of Mnk and/or can be useful in analyzing Mnk signaling activity in model systems and/or for preventing, treating, or ameliorating a symptom associated with a disease, disorder, or pathological condition involving Mnk, preferably one afflicting humans.
• a compound which inhibits the activity of Mnk will be useful in preventing, treating, ameliorating, or reducing the symptoms or progression of diseases of uncontrolled cell growth, proliferation and/or survival, inappropriate cellular immune responses, or inappropriate cellular inflammatory responses or diseases which are accompanied with uncontrolled cell growth, proliferation and/or survival, inappropriate cellular immune responses, or inappropriate cellular inflammatory responses, particularly in which the uncontrolled cell growth, proliferation and/or survival, inappropriate cellular immune responses, or inappropriate cellular inflammatory responses is mediated by Mnk, such as, for example, haematological tumors, solid tumors, and/or metastases thereof, including leukaemias and myelodysplastic syndrome, Waldenstrom macroglobulinemia, and malignant lymphomas, for example, B-cell lymphoma, T-cell lymphoma, hairy cell lymphoma, Hodgkins lymphoma, non-Hodgins lymphoma, and Burketts lymphoma, head and neck tumors including brain tumors and brain metastases, tumors of
• inventive compounds and their pharmaceutical compositions are candidate therapeutics for the prophylaxis and/or therapy of cytokine related diseases, such as inflammatory diseases, allergies, or other conditions associated with proinflammatory cytokines.
• cytokine related diseases include without limitation, chronic or acute inflammation, inflammation of the joints such as chronic inflammatory arthritis, rheumatoid arthritis, psoriatic arthritis, osteoarthritis, juvenile rheumatoid arthritis, Reiter's syndrome, rheumatoid traumatic arthritis, rubella arthritis, acute synovitis and gouty arthritis; inflammatory skin diseases such as sunburn, psoriasis, erythrodermic psoriasis, pustular psoriasis, eczema, dermatitis, acute or chronic graft formation, atopic dermatitis, contact dermatitis, urticaria and scleroderma; inflammation of the gastrointestinal tract such as inflammatory bowel disease, Crohn's disease and related
• oesophagitis gastritis, peritonitis, hepatitis, cholelithiasis, cholecystitis, glomerulonephritis, goodpasture's disease, crescentic glomerulonephritis, pancreatitis, endomyometritis, myometritis, metritis, cervicitis, endocervicitis, exocervicitis, parametritis, tuberculosis, vaginitis, vulvitis, silicosis, sarcoidosis, pneumoconiosis, pyresis, inflammatory polyarthropathies, psoriatric arthropathies, intestinal fibrosis, bronchiectasis and enteropathic arthropathies.
• compositions of the present invention are useful for the treatment and/or prophylaxis of inflammatory diseases and related complications and disorders.
• certain embodiments are directed to a method for treating a Mnk dependent condition in a mammal in need thereof, the method comprising administering an effective amount of a pharmaceutical composition as described above (i.e., a pharmaceutical composition comprising any one or more compounds of Formula I) to a mammal.
• a pharmaceutical composition as described above i.e., a pharmaceutical composition comprising any one or more compounds of Formula I
• eIF4E A key regulator of translational control is eIF4E whose activity is a key determinant of tumorigenicity. Because activation of eIF4E involves phosphorylation of a key serine (Ser209) specifically by MAP kinase interacting kinases (Mnk), inhibitors of Mnk are suitable candidate therapeutics for treating cell proliferative disorders such as cancer.
• Ser209 serine
• Mnk MAP kinase interacting kinases
• Types of cancer that may be treated include, but are not limited to: adenocarcinoma of the breast, prostate and colon; all forms of bronchogenic carcinoma of the lung; myeloid; melanoma; hepatoma; neuroblastoma; papilloma; apudoma; choristoma; branchioma; malignant carcinoid syndrome; carcinoid heart disease; and carcinoma (e.g., Walker, basal cell, basosquamous, Brown-Pearce, ductal, Ehrlich tumor, Krebs 2, merkel cell, mucinous, non-small cell lung, oat cell, papillary, scirrhous, bronchiolar, bronchogenic, squamous cell, and transitional cell).
• carcinoma e.g., Walker, basal cell, basosquamous, Brown-Pearce, ductal, Ehrlich tumor, Krebs 2, merkel cell, mucinous, non-small cell lung, oat cell,
• Additional types of cancers include: histiocytic disorders; acute and chronic leukemia, both myeloid and lymphoid/lymphoblastic, including hairy cell leukemia; histiocytosis malignant; Hodgkins disease; immunoproliferative small; Hodgkins lymphoma; B-cell and T-cell non-Hodgkins lymphoma, including diffuse large B-cell and Burkett's lymphoma; plasmacytoma; reticuloendotheliosis; melanoma; multiple myeloma; chondroblastoma; chondroma; chondrosarcoma; fibroma; fibrosarcoma; myelofibrosis; giant cell tumors; histiocytoma; lipoma; liposarcoma; mesothelioma; myxoma; myxosarcoma; osteoma; osteosarcoma; chordoma; crani
• cancers that can be treated using the inventive compounds include without limitation adenoma; cholangioma; cholesteatoma; cyclindroma; cystadenocarcinoma; cystadenoma; granulosa cell tumor; gynandroblastoma; hepatoma; hidradenoma; islet cell tumor; Leydig cell tumor; papilloma; sertoli cell tumor; theca cell tumor; leimyoma; leiomyosarcoma; myoblastoma; myomma; myosarcoma; rhabdomyoma; rhabdomyosarcoma; ependymoma; ganglioneuroma; glioma; medulloblastoma; meningioma; neurilemmoma; neuroblastoma; neuroepithelioma; neurofibroma; neuroma; paraganglioma; paraganglioma
• the inventive compounds are candidate therapeutic agents for the treatment of cancers such as angiokeratoma; angiolymphoid hyperplasia with eosinophilia; angioma sclerosing; angiomatosis; glomangioma; hemangioendothelioma; hemangioma; hemangiopericytoma; hemangiosarcoma; lymphangioma; lymphangiomyoma; lymphangiosarcoma; pinealoma; carcinosarcoma; chondrosarcoma; cystosarcoma phyllodes; fibrosarcoma; hemangiosarcoma; leiomyosarcoma; leukosarcoma; liposarcoma; lymphangiosarcoma; myosarcoma; myxosarcoma; ovarian carcinoma; rhabdomyosarcoma; sarcoma; neoplasms; nero
• the present disclosure provides methods for treating colon cancer, colorectal cancer, gastric cancer, thyroid cancer, lung cancer, leukemia, pancreatic cancer, melanoma, multiple melanoma, brain cancer, primary and secondary CNS cancer, including malignant glioma and glioblastoma, renal cancer, prostate cancer, including castration-resistant prostate cancer, ovarian cancer, or breast cancer, including triple negative, HER2 positive, and hormone receptor positive breast cancers.
• a therapeutically effective amount of at least one compound according to Formula I or a stereoisomer, tautomer or pharmaceutically acceptable salt thereof can be administered to a subject who has been diagnosed with a cell proliferative disease, such as a cancer.
• a pharmaceutical composition comprising at least one compound according to Formula I or a stereoisomer, tautomer or pharmaceutically acceptable salt thereof can be administered to a subject who has been diagnosed with cancer.
• the compounds in accordance with the invention are administered to a subject with cancer in conjunction with other conventional cancer therapies such as radiation treatment or surgery.
• Radiation therapy is well-known in the art and includes X-ray therapies, such as gamma-irradiation, and radiopharmaceutical therapies.
• the inventive Mnk inhibitor compounds are used with at least one anti-cancer agent.
• Anti-cancer agents include chemotherapeutic drugs.
• a chemotherapeutic agent includes, but is not limited to, an inhibitor of chromatin function, a topoisomerase inhibitor, a microtubule inhibiting drug, a DNA damaging agent, an antimetabolite (such as folate antagonists, pyrimidine analogs, purine analogs, and sugar-modified analogs), a DNA synthesis inhibitor, a DNA interactive agent (such as an intercalating agent), and a DNA repair inhibitor.
• Illustrative chemotherapeutic agents include, without limitation, the following groups: anti-metabolites/anti-cancer agents, such as pyrimidine analogs (5-fluorouracil, floxuridine, capecitabine, gemcitabine and cytarabine) and purine analogs, folate antagonists and related inhibitors (mercaptopurine, thioguanine, pentostatin and 2-chlorodeoxyadenosine (cladribine)); antiproliferative/antimitotic agents including natural products such as vinca alkaloids (vinblastine, vincristine, and vinorelbine), microtubule disruptors such as taxane (paclitaxel, docetaxel), vincristin, vinblastin, nocodazole, epothilones and navelbine, epidipodophyllotoxins (etoposide, teniposide), DNA damaging agents (actinomycin, amsacrine, anthracyclines, bleomycin, bus
• an Mnk inhibitor in accordance with the present invention is used simultaneously, in the same formulation or in separate formulations, or sequentially with an additional agent(s) as part of a combination therapy regimen.
• Mnk inhibitors according to Formula I including their corresponding salts and pharmaceutically acceptable compositions of Formula I compounds are also effective as therapeutic agents for treating or preventing cytokine mediated disorders, such as inflammation in a patient, preferably in a human.
• a compound or composition in accordance with the invention is particularly useful for treating or preventing a disease selected from chronic or acute inflammation, chronic inflammatory arthritis, rheumatoid arthritis, psoriasis, COPD, inflammatory bowel disease, septic shock, Crohn's disease, ulcerative colitis, multiple sclerosis and asthma.
• inventive compounds their corresponding salts and pharmaceutically acceptable compositions are candidate therapeutics for treating brain related disorders which include without limitation autism, Fragile X-syndrome, Parkinson's disease and Alzheimer's disease.
• Treatment is effected by administering to a subject in need of treatment a Formula I compound, its pharmaceutically acceptable salt form, or a pharmaceutically acceptable composition of a Formula I compound or its salt.
• the invention also supports the use of the inventive compounds or a pharmaceutically acceptable formulation of the inventive compound as an inhibitor of Mnk activity. Such inhibition is achieved by contacting a cell expressing Mnk with a compound or a pharmaceutically acceptable formulation, to lower or inhibit Mnk activity, to provide therapeutic efficacy for a Mnk dependent condition in a mammal in need thereof.
• Therapeutically effective dosages of a compound according to Formula I or a composition of a Formula I compound will generally range from about 1 to 2000 mg/day, from about 10 to about 1000 mg/day, from about 10 to about 500 mg/day, from about 10 to about 250 mg/day, from about 10 to about 100 mg/day, or from about 10 to about 50 mg/day.
• the therapeutically effective dosages may be administered in one or multiple doses. It will be appreciated, however, that specific doses of the compounds of the invention for any particular patient will depend on a variety of factors such as age, sex, body weight, general health condition, diet, individual response of the patient to be treated, time of administration, severity of the disease to be treated, the activity of particular compound applied, dosage form, mode of application and concomitant medication.
• the therapeutically effective amount for a given situation will readily be determined by routine experimentation and is within the skills and judgment of the ordinary clinician or physician.
• the compound or composition will be administered at dosages and in a manner which allows a therapeutically effective amount to be delivered based upon patient's unique condition.
• I is accomplished by reacting compound II (P 1 is an optional protecting group) with compound III (X is a leaving group, such as halogen, —OTf, —OTs or —OMs, and P 2 is an optional protecting group) under the Buchwald-Hartwig conditions (such as palladium catalyst, ligand, base, solvent and heat), followed by de-protection and/or further functional group manipulation if necessary.
• P 1 is an optional protecting group
• X is a leaving group, such as halogen, —OTf, —OTs or —OMs
• P 2 is an optional protecting group
• I is also accomplished by reacting compound II (P 1 is an optional protecting group) with compound IV (R is a hydrogen or alkyl group and P 2 is an optional protecting group) under the Chan-Lam conditions (such as copper(II) acetate, oxygen, base, solvent, heat), followed by de-protection and/or further functional group manipulation if necessary.
• P 1 is an optional protecting group
• R is a hydrogen or alkyl group
• P 2 is an optional protecting group
• I is also accomplished by reacting compound II (P 1 is an optional protecting group) with compound V (P 2 is an optional protecting group) under the typical nucleophilic aromatic substitution conditions (such as solvent, heat), followed by de-protection and/or further functional group manipulation if necessary.
• P 1 is an optional protecting group
• V is an optional protecting group
• intermediate VII is accomplished by exposing compound VI (when P is an optional protecting group) to an alkyl halide under basic conditions (such as sodium hydride in tetrahydrofuran), followed by de-protection and/or further functional group manipulation if necessary.
• basic conditions such as sodium hydride in tetrahydrofuran
• IX is accomplished by exposing VIII (when P is an optional protecting group) to the Wittig olefination conditions (such as Ph 3 P ⁇ CR 9a R 9b , solvent and heat), followed by de-protection and/or further functional group manipulation if necessary.
• the Wittig olefination conditions such as Ph 3 P ⁇ CR 9a R 9b , solvent and heat
• Procedure B A solution of 2-(4-methoxybenzyl)-5-(7H-pyrrolo[2,3-d]pyrimidin-7-yl)isoindolin-1-one (3, 0.21 g, 0.55 mmol) in trifluoroacetic acid (10 mL) was heated at 95° C. for 12 h. Following heating the reaction mixture was concentrated under reduced pressure and neutralized with saturated solution of sodium bicarbonate. The residue thus obtained was filtered, washed with water and then with hexane and diethyl ether. The solid was dried to afford 5-(7H-pyrrolo[2,3-d]pyrimidin-7-yl)isoindolin-1-one (Cpd. No. 1F).
• Procedure C A solution of 4-methyl-7H-pyrrolo[2,3-d]pyrimidine (1, 0.4 g, 3.0 mmol), 5-bromo-2-(4-methoxybenzyl) isoindolin-1-one (2, 1.0 g, 4.5 mmol) and potassium phosphate (1.91 g, 9.0 mmol) in 1, 4-dioxane (15 ml) was degassed with nitrogen for 10 min. Copper (I) iodide (0.28 g, 1.5 mmol) and trans-1, 2-diaminocyclohexane (0.17 g, 1.5 mmol) were added and the reaction was refluxed at 90° C. for 16 h. Progress of the reaction was monitored by TLC.
• Procedure D To a solution of 5-bromo-7-((2-(trimethylsilyl)ethoxy)methyl)-7H-pyrrolo[2,3-d]pyrimidine (2, 0.5 g, 1.51 mmol) in 1,4-dioxane and water (15 mL, 4:1), was added 1-methyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole (3, 0.41 g, 1.97 mmol) and sodium carbonate (0.48 g, 4.53 mmol).
• reaction mixture was degassed with argon for 15 min., and then [1,1-bis(diphenylphosphino)ferrocene] dichloropalladium (0.18 g, 0.22 mmol) was added and the reaction mixture heated at 90° C. for 16 h. After heating, the reaction mixture was diluted with ethyl acetate and filtered through celite.
• reaction was continued at ⁇ 78° C. for 7 h.
• the progress of reaction was monitored by TLC.
• reaction was quenched with ammonium chloride solution and extracted with ethyl acetate. The organic layer was separated, washed with brine, dried over sodium sulfate and concentrated under reduced pressure to a crude residue, which was purified by column chromatography to afford 6-chloro-2-(4-methoxybenzyl)-1H-pyrrolo [3,4-c]pyridin-3(2H)-one (3). Yield: 1.2 g, 23%; MS (ESI) m/z 289[M+1] + .
• N-bromosuccinimide (1.15 g, 6.47 mmol) were added to a stirring solution of 2-(4-methoxybenzyl)-5-(7H-pyrrolo[2,3-d]pyrimidin-7-yl)isoindolin-1-one (3, 2 g, 5.39 mmol) in N,N-dimethylformamide (30 mL), at room temperature.
• the reaction mass was stirred at room temperature for 1 h. After completion, the reaction mixture was diluted with water (50 mL) and extracted with ethyl acetate (2 ⁇ 50 mL). The organic layers were combined, dried using magnesium sulfate, filtered and concentrated to dryness under vacuum.
• Procedure F A solution of 7′-chloro-2′-[(4-methoxyphenyl)methyl]-5′-pyrrolo[2,3-d]pyrimidin-7-yl-spiro[cyclopentane-1,3′-isoindoline]-1′-one (5, 0.06 g, 0.13 mmol) in dichloromethane (5 mL) and trifluoroacetic acid (10 mL) was heated at 60° C. for 48 h. After completion, the reaction mixture was cooled to room temperature and concentrated. The crude was co-evaporated with dichloromethane and then liquid ammonia was added to neutralize the reaction mass.
• Procedure G To a solution of 7H-pyrrolo[2,3-d]pyrimidin-4-amine (1, 0.32 g, 2.39 mmol) and 2′-chloro-4′-methylspiro[cyclohexane-1,7′-pyrrolo[3,4-b]pyridin]-5′(6′H)-one (2, 0.6 g, 2.39 mmol) in 1,4-dioxane (15 mL) was added cesium carbonate (2.33 g, 7.17 mmol). The reaction mixture was purged with argon for 5 min.
• N-tert-butyl-1-(6′-methoxy-4′-methylspiro[cyclohexane-1,1′-isoindolin]-2′-yl)methanimine (4, 1.00 g, 3.18 mmol) in tetrahydrofuran (20 mL) at ⁇ 78° C.
• n-butyl lithium (1.6 M in hexanes, 2.19 mL, 3.50 mmol) dropwise and the reaction is stirred for 30 min.
• Iodomethane (0.30 mL, 4.77 mmol) is added and the reaction is warmed to room temperature and stirred for 1 h.
• reaction mixture is quenched with water and extracted with ethyl acetate.
• the combined organics is dried over magnesium sulphate, filtered and concentrated.
• the residue is purified via column chromatography to N-tert-butyl-1-(6′-methoxy-3′,4′-dimethylspiro[cyclohexane-1,1′-isoindolin]-2′-yl)methanimine (5).
• N-tert-butyl-1-(6′-methoxy-3′,4′-dimethylspiro[cyclohexane-1,1′-isoindolin]-2′-yl)methanimine (1, 1.00 g, 3.04 mmol) in tetrahydrofuran (20 mL) at ⁇ 78° C.
• n-butyl lithium 1.6 M in hexanes, 2.09 mL, 3.34 mmol
• Iodomethane (0.28 mL, 4.56 mmol) is added and the reaction is warmed to room temperature and stirred for 1 h.
• reaction mixture is quenched with water and extracted with ethyl acetate.
• the combined organics is dried over magnesium sulphate, filtered and concentrated.
• the residue is purified via column chromatography to N-tert-butyl-1-(6′-methoxy-3′,4′-dimethylspiro[cyclohexane-1,1′-isoindolin]-2′-yl)methanimine (2).
• a 1.1 M toluene solution of diethyl zinc (15.02 mL, 16.52 mmol) is added to a reaction vessel containing dichloromethane (20 mL) and cooled to 0° C.
• Trifluoroacetic acid (1.26 mL, 16.52 mmol) is added to the resulting solution and the reaction is stirred at 0° C. for 15 min.
• diiodomethane (1.33 mL, 16.52 mmol
• Compounds are screened for MNK inhibition using the ADP-Glo kinase assay kit (Promega, catalogue No. V9101). All kinase reactions are performed in Reaction Buffer E (15 mM HEPES pH7.4, 20 mM NaCl, 1 mM EGTA, 10 mM MgCl 2 , 0.1 mg/ml BGG, and 0.02% Tween-20). Final MNK1 reactions contained 10 nM recombinant MNK1 (Life Technologies, PR9138A), 100 ⁇ M MNK substrate peptide Ac-TATKSGSTTKNR-NH2 (American Peptide Company), 300 ⁇ M ATP, and varying concentrations of the inhibitory compound of interest.
• Reaction Buffer E 15 mM HEPES pH7.4, 20 mM NaCl, 1 mM EGTA, 10 mM MgCl 2 , 0.1 mg/ml BGG, and 0.02% Tween-20.
• Final MNK1 reactions
• Final MNK2 reactions contained 3 nM recombinant MNK2 (Life Technologies, PV5607), 50 ⁇ M MNK substrate peptide Ac-TATKSGSTTKNR-NH2 (American Peptide Company), 10 ⁇ M ATP, and varying concentrations of the inhibitory compound of interest. Final DMSO concentration in each reaction is 1%.
• Kinase reactions are carried out in 96-well half-area white flat-bottom polystyrene plates in a final volume of 25 ⁇ l.
• MNK1/2 enzymes are pre-incubated with compound and peptide substrate for 5 minutes prior to the addition of ATP. After the addition of ATP, kinase reactions are incubated at room temperature for 40 minutes. Reactions are subsequently stopped by the addition of 25 ⁇ l of ADP-Glo Reagent and incubating for an additional 40 minutes.
• the final luminescent signal used for kinase activity readout is produced by the addition of 45 ⁇ l of Kinase Detection Reagent (ADP-Glo kit, Promega) and incubating for 40 minutes. The luminescent signal is detected using a Victor 2 multilabel counter (Perkin Elmer) and the concentration of compound necessary to achieve inhibition of enzyme activity by 50% (IC 50 ) is calculated using signals from an 8-point compound dilution series.
• IC 50 values of less than 0.01 ⁇ M are labeled as “+++”, from 0.01 to 0.1 ⁇ M are labeled as “++”, and greater than 0.1 to 10.0 ⁇ M are labeled as “+” (NA means “not available”).
• Phosphorylated eIF4E is assayed using the CisBio peIF4E HTRF® assay kit (CisBio, catalogue No. 64EF4PEG).
• Cells are plated in 96-well tissue-culture treated plate in appropriate growth medium (90 ⁇ L).
• Compounds (10 ⁇ ) are diluted using 3-fold serial dilutions in cell culture medium and added to cells. Plates are incubated for 2 hrs at 37° C. The cell supernatant is carefully removed either by aspirating supernatant or by flicking the plate.
• Immediately 50 ⁇ L of supplemented lysis buffer (1 ⁇ ) is added and incubated for at least 30 minutes at room temperature under shaking.
• IC 50 values of less than 0.05 ⁇ M are labeled as “+++”, from 0.05 to 1.0 ⁇ M are labeled as “++”, greater than 1.0 to 100 ⁇ M are labeled as “+”, and NA means “not available”.
• IC 50 Signaling Cellular Assay (IC 50 ) Cpd. No. IC 50 1 + 2 NA 3 + 4 NA 5 NA 6 + 7 NA 8 + 9 NA 10 NA 11 + 12 NA 13 NA 14 NA 15 NA 16 NA 17 ++ 18 ++ 19 NA 20 NA 21 NA 22 + 23 NA 24 NA 25 NA 26 NA 27 ++ 28 +++ 29 +++ 30 +++ 31 ++ 32 ++ 33 ++ 34 +++

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