EP2685825A1 - Imadazapyrinidin-5(6h)-ones substituées en tant que modulateurs allostériques des récepteurs mglur5 - Google Patents

Imadazapyrinidin-5(6h)-ones substituées en tant que modulateurs allostériques des récepteurs mglur5

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Publication number
EP2685825A1
EP2685825A1 EP12757940.7A EP12757940A EP2685825A1 EP 2685825 A1 EP2685825 A1 EP 2685825A1 EP 12757940 A EP12757940 A EP 12757940A EP 2685825 A1 EP2685825 A1 EP 2685825A1
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Prior art keywords
alkyl
monohaloalkyl
polyhaloalkyl
hydrogen
independently selected
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German (de)
English (en)
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EP2685825A4 (fr
Inventor
P. Jeffrey Conn
Craig W. LINSLEY
Shaun R. Stauffer
Jose Manuel Bartolome-Nebreda
Gregor James Macdonald
Susana Conde-Ceide
Carrie K. Jones
Maria Luz Martin-Martin
Han Min Tong
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Vanderbilt University
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Vanderbilt University
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Definitions

  • MH062646, MH073676 and MH082867 awarded by the National Institute of Mental Health (NIMH), and under grant number NS031373 awarded by the National Institute of
  • Glutamate L-glutamic acid
  • GPCRs G-protein-coupled receptors
  • the mGluR family comprises eight known mGluRs receptor types (designated as mGluRl through mGluR8). Several of the receptor types are expressed as specific splice variants, e.g. mGluR5a and mGluR5b or mGluR8a, mGluR8b and mGluR8c. The family has been classified into three groups based on their structure, preferred signal transduction mechanisms, and pharmacology.
  • Group I receptors (mGluRl and mGluR5) are coupled to Gaq, a process that results in stimulation of phospholipase C and an increase in intracellular calcium and inositol phosphate levels.
  • Group ⁇ receptors (mGluR2 and mGluR3) and group ⁇ receptors
  • mGluR4, mGluR6, mGluR7, and mGluR8 are coupled to Gcci, which leads to decreases in cyclic adenosine monophosphate (cAMP) levels. While the Group I receptors are predominately located postsynaptically and typically enhance postsynaptic signaling, the group II and ⁇ receptors are located presynaptically and typically have inhibitory effects on neurotransmitter release.
  • metabotropic glutamate receptors including mGluR5
  • Ligands of metabotropic glutamate receptors can be used for the treatment or prevention of acute and/or chronic neurological and/or psychiatric disorders associated with glutamate dysfunction, such as psychosis, schizophrenia, age-related cognitive decline, and the like.
  • PAMs Selective positive allosteric modulators
  • the invention in one aspect, relates to compounds useful as positive allosteric modulators (i.e., potentiators) of the metabotropic glutamate receptor subtype 5 (mGluR5), methods of making same, pharmaceutical compositions comprising same, and methods of treating neurological and psychiatric disorders associated with glutamate dysfunction using same.
  • positive allosteric modulators i.e., potentiators
  • mGluR5 metabotropic glutamate receptor subtype 5
  • Ar is phenyl substituted with 0-3 substituents independently selected from halogen, cyano, C1-C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or Ar 1 is monocyclic heteroaryl substituted with 0-3 substituents independently selected from halogen, cyano, Cl- C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl; wherein when— — is present and A 1 and A 2 are joined by a covalent double bond, A 1 is CR la , and A 2 is CR 2a ; wherein R la is selected from hydrogen, halogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and Cl- C4 polyhaloalkyl; wherein R 2a
  • R lb and R lc are independently selected from hydrogen, fluoro, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or R lb and R lc are covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7-membered spirocycloalkyl; wherein each of R 2b and R 2c are independently selected from hydrogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or R 2b and R 2c are covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7-membered spirocycloalkyl; wherein each of R 2b and R 2c are independently selected from hydrogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or R 2
  • R la and R 2a when present, are optionally covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7-membered fused cycloalkenyl; wherein R lb and R 2b , when present, are optionally covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7-membered fused cycloalkyl; wherein R , when is present, is selected from hydrogen, C1-C6 alkyl;
  • compositions comprising a therapeutically effective amount of a disclosed compound and a pharmaceutically acceptable carrier.
  • Ar 1 is phenyl substituted with 0-3 substituents independently selected from halogen, cyano, C1-C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or Ar 1 is monocyclic heteroaryl substituted with 0-3 substituents independently selected from halogen, cyano, C1-C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, and C1-C4
  • R la is selected from hydrogen, halogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl
  • R 2a is selected from hydrogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl
  • R is selected from phenyl substituted with 0-3 substituents independently selected from halogen, cyano, C1-C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl
  • Ar 1 is monocyclic heteroaryl substituted with 0-3 substituents independently selected from halogen, cyano, Cl- C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl
  • R 4 is selected from hydrogen,
  • Ar is phenyl substituted with 0-3 substituents independently selected from halogen, cyano, C1-C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or Ar 1 is monocyclic heteroaryl substituted with 0-3 substituents independently selected from halogen, cyano, Cl- C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl; wherein when— — is present and A 1 and A 2 are joined by a covalent double bond, A 1 is CR la , and A 2 is CR 2a ; wherein R la is selected from hydrogen, halogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and Cl- C4 polyhaloalkyl; wherein R 2a
  • R lb and R lc are independently selected from hydrogen, fluoro, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or R lb and R lc are covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7-membered spirocycloalkyl; wherein each of R and R c are independently selected from hydrogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or R 2b and R 2c are covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7-membered spirocycloalkyl; wherein each of R and R c are independently selected from hydrogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or R 2b and R 2
  • R la and R 2a when present, are optionally covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7-membered fused cycloalkenyl; wherein R lb and R 2b , when present, are optionally covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7-membered fused cycloalkyl; wherein R 4 is selected from hydrogen, halogen, cyano, C1-C4 alkyl, C1-C4 monohaloalkyl, C1-C4 polyhaloalkyl, C1-C4 alkylamino, C1-C4 dialkylamino, and C1-C4 alkoxy; wherein each of R 5a and R 5b is independently selected from hydrogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, and (b
  • heterocycloalkyl C1-C6 alkyl—, and aromatic moiety Ar 2 ; wherein Ar 2 is phenyl or benzyl or -(C2-C6)-phenyl, and substituted with 0-3 substituents independently selected from halogen, cyano, C1-C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, C1-C4 polyhaloalkyl, — NH 2 , -NH(C1-C4 alkyl), and -N(C1-C4 alkyl)(Cl-C4 alkyl), or Ar 2 is monocyclic heteroaryl substituted with 0-3 substituents independently selected from halogen, cyano, Cl- C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, C1-C4 polyhaloalkyl,— NH 2 , -NH(C1-C4 alkyl), and— N
  • Ar is phenyl substituted with 0-3 substituents independently selected from halogen, cyano, C1-C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or Ar 1 is monocyclic heteroaryl substituted with 0-3 substituents independently selected from halogen, cyano, Cl- C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl; wherein when— — is present and A 1 and A 2 are joined by a covalent double bond, A 1 is CR la , and A 2 is CR 2a ; wherein R la is selected from hydrogen, halogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and Cl- C4 polyhaloalkyl; wherein R 2a
  • R lb and R lc are independently selected from hydrogen, fluoro, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or R lb and R lc are covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7-membered spirocycloalkyl; wherein each of R 2b and R 2c are independently selected from hydrogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or R 2b and R 2c are covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7-membered spirocycloalkyl; wherein each of R 2b and R 2c are independently selected from hydrogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or R 2
  • R la and R 2a when present, are optionally covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7-membered fused cycloalkenyl; wherein R lb and R 2b , when present, are optionally covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7-membered fused cycloalkyl; wherein R 4 is selected from hydrogen, halogen, cyano, C1-C4 alkyl, C1-C4 monohaloalkyl, C1-C4 polyhaloalkyl, C1-C4 alkylamino, C1-C4 dialkylamino, and C1-C4 alkoxy; wherein each of R 5a and R 5b is independently selected from hydrogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, and (b
  • X is a leaving group; wherein is an optional covalent bond, wherein valence is satisfied; wherein when is present and A 1 and A 2 are joined by a covalent double bond,
  • a 1 is CR la
  • a 2 is CR 2a ; wherein R la is selected from hydrogen, halogen, C1-C4 alkyl, Cl- C4 monohaloalkyl, and C1-C4 polyhaloalkyl; wherein R 2a is selected from hydrogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl; wherein when is not present and
  • a 1 and A 2 are joined by a covalent single bond, A 1 is CR lb R lc , and A 2 is CR 2b R 2c ; wherein each of R lb and R lc are independently selected from hydrogen, fluoro, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or R lb and R lc are covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7-membered
  • each of R 2b and R 2c are independently selected from hydrogen, Cl- C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or R 2b and R 2c are covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7- membered spirocycloalkyl; wherein R la and R 2a , when present, are optionally covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7- membered fused cycloalkenyl; wherein R lb and R 2b , when present, are optionally covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7- membered fused cycloalkyl; wherein R , when is present, is selected from hydrogen, Cl-
  • Ar 2 is phenyl or benzyl or -(C2-C6)-phenyl, and substituted with 0-3 substituents independently selected from halogen, cyano, C1-C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, C1-C4 polyhaloalkyl,— NH 2 , -NH(C1-C4 alkyl), and— N(C1-C4 alkyl)(Cl-C4 alkyl), or Ar is monocyclic heteroaryl substituted with 0-3 substituents independently selected from halogen, cyano, C1-C4 alkyl, C1-C4 alkyloxy, Cl- C4 monohaloalkyl, C1-C4 polyhaloalkyl,— NH 2 , -NH(C1-C4 alkyl), and -N(C1-C4 alkyl) (C1
  • R la is selected from hydrogen, halogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and Cl- C4 polyhaloalkyl; wherein R 2a is selected from hydrogen, C1-C4 alkyl, C1-C4
  • R is selected from hydrogen, C1-C6 alkyl; C1-C6 alkyloxy; C1-C6 monohaloalkyl; C1-C6 polyhaloalkyl; C3-C8 cycloalkyl; C3- C8 heterocycloalkyl; (C3-C8 cycloalkyl)-Cl-C6 alkyl-; (C3-C8 heterocycloalkyl)-Cl-C6 alkyl—, and aromatic moiety Ar 2 ; wherein Ar 2 is phenyl or benzyl or -(C2-C6)-phenyl, and substituted with 0-3 substituents independently selected from halogen, cyano, C1-C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, C1-C4 polyhaloalkyl,— NH 2 , -NH(C1-C1-
  • R la is selected from hydrogen, halogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and Cl- C4 polyhaloalkyl, and (b) reacting the compound with a compound represented by a formula: wherein R 4 is selected from hydrogen, halogen, cyano, and C1-C4 alkyl; and wherein each of R 5a and R 5b is independently selected from selected from hydrogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl.
  • Ar 1 is phenyl substituted with 0-3 substituents independently selected from halogen, cyano, C1-C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or Ar 1 is monocyclic heteroaryl substituted with 0-3 substituents independently selected from halogen, cyano, C1-C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, and C1-C4
  • R la is selected from hydrogen, halogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl
  • R 4 is selected from hydrogen, halogen, cyano, C1-C4 alkyl, C1-C4 monohaloalkyl, C1-C4 polyhaloalkyl, C1-C4 alkylamino, C1-C4 dialkylamino, and C1-C4 alkoxy
  • each of R 5a and R 5b is independently selected from hydrogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl
  • a 1 is CR la
  • a 2 is CR 2a
  • R la is selected from hydrogen, halogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl
  • R 2a is selected from hydrogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl; wherein when is not present and
  • a 1 and A 2 are joined by a covalent single bond, A 1 is CR lb R lc , and A 2 is CR 2b R 2c ; wherein each of R lb and R lc are independently selected from hydrogen, fluoro, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or R lb and R lc are covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7-membered
  • each of R 2b and R 2c are independently selected from hydrogen, Cl- C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or R 2b and R 2c are covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7- membered spirocycloalkyl; wherein R la and R 2a , when present, are optionally covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7- membered fused cycloalkenyl; wherein R lb and R 2b , when present, are optionally covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7- membered fused cycloalkyl; wherein R is selected from hydrogen, C1-C6 alkyl; C1-C6 alkyloxy; C1-C6 monohaloalkyl;
  • Ar 1 is phenyl substituted with 0-3 substituents independently selected from halogen, cyano, C1-C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or Ar 1 is monocyclic heteroaryl substituted with 0-3 substituents independently selected from halogen, cyano, C1-C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, and C1-C4
  • heterocycloalkyl C1-C6 alkyl—, and aromatic moiety Ar 2 ; wherein Ar 2 is phenyl or benzyl or -(C2-C6)-phenyl, and substituted with 0-3 substituents independently selected from halogen, cyano, C1-C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, C1-C4 polyhaloalkyl, — NH 2 , -NH(C1-C4 alkyl), and -N(C1-C4 alkyl)(Cl-C4 alkyl), or Ar 2 is monocyclic heteroaryl substituted with 0-3 substituents independently selected from halogen, cyano, Cl- C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, C1-C4 polyhaloalkyl,— NH 2 , -NH(C1-C4 alkyl), and— N
  • X is halogen; wherein Ar 1 is phenyl substituted with 0-3 substituents independently selected from halogen, cyano, C1-C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, and Cl- C4 polyhaloalkyl, or Ar 1 is monocyclic heteroaryl substituted with 0-3 substituents independently selected from halogen, cyano, C1-C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl; wherein when is present and A 1 and A 2 are joined by a covalent double bond, A 1 is CR la , and A 2 is CR 2a ; wherein R la is selected from hydrogen, halogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl; wherein R 2a is selected from hydrogen, C1-C
  • heterocycloalkyl C1-C6 alkyl—, and aromatic moiety Ar 2 ; wherein Ar 2 is phenyl or benzyl or -(C2-C6)-phenyl, and substituted with 0-3 substituents independently selected from halogen, cyano, C1-C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, C1-C4 polyhaloalkyl, — NH 2 , -NH(C1-C4 alkyl), and -N(C1-C4 alkyl)(Cl-C4 alkyl), or Ar 2 is monocyclic heteroaryl substituted with 0-3 substituents independently selected from halogen, cyano, Cl- C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, C1-C4 polyhaloalkyl,— NH 2 , -NH(C1-C4 alkyl), and— N
  • Also disclosed are synthetic methods comprising the steps of: (a) providing a compound having a structure represented by a formula: wherein X is halogen; wherein Ar 1 is phenyl substituted with 0-3 substituents independently selected from halogen, cyano, C1-C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, and Cl- C4 polyhaloalkyl, or Ar 1 is monocyclic heteroaryl substituted with 0-3 substituents independently selected from halogen, cyano, C1-C4 alkyl, C1-C4 alkyloxy, C1-C4
  • a 1 is CR la
  • a 2 is CR 2a
  • R la is selected from hydrogen, halogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl
  • R 2a is selected from hydrogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl; wherein when is not present and A 1 and A2 are joined by a covalent single bond, A 1 is
  • R lb and R lc are independently selected from hydrogen, fluoro, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or R lb and R lc are covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7-membered spirocycloalkyl; wherein each of R 2b and R 2c are independently selected from hydrogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or R 2b and R 2c are covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7-membered spirocycloalkyl; wherein R la and R 2a , when present, are optionally covalently bonded and, together with the intermediate
  • heterocycloalkyl C1-C6 alkyl—, and aromatic moiety Ar 2 ; wherein Ar 2 is phenyl or benzyl or -(C2-C6)-phenyl, and substituted with 0-3 substituents independently selected from halogen, cyano, C1-C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, C1-C4 polyhaloalkyl, — NH 2 , -NH(C1-C4 alkyl), and -N(C1-C4 alkyl)(Cl-C4 alkyl), or Ar 2 is monocyclic heteroaryl substituted with 0-3 substituents independently selected from halogen, cyano, Cl- C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, C1-C4 polyhaloalkyl,— NH 2 , -NH(C1-C4 alkyl), and— N
  • X is halogen; wherein Ar 1 is phenyl substituted with 0-3 substituents independently selected from halogen, cyano, C1-C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, and Cl- C4 polyhaloalkyl, or Ar 1 is monocyclic heteroaryl substituted with 0-3 substituents independently selected from halogen, cyano, C1-C4 alkyl, C1-C4 alkyloxy, C1-C4
  • a 1 is CR la
  • a 2 is CR 2a
  • R la is selected from hydrogen, halogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl
  • R 2a is selected from hydrogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl; wherein when is not present and A 1 and A2 are joined by a covalent single bond, A 1 is
  • R lb and R lc are independently selected from hydrogen, fluoro, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or R lb and R lc are covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7-membered spirocycloalkyl; wherein each of R 2b and R 2c are independently selected from hydrogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or R 2b and R 2c are covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7-membered spirocycloalkyl; wherein R la and R 2a , when present, are optionally covalently bonded and, together with the intermediate
  • heterocycloalkyl C1-C6 alkyl—, and aromatic moiety Ar 2 ; wherein Ar 2 is phenyl or benzyl or -(C2-C6)-phenyl, and substituted with 0-3 substituents independently selected from halogen, cyano, C1-C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, C1-C4 polyhaloalkyl, — NH 2 , -NH(C1-C4 alkyl), and -N(C1-C4 alkyl)(Cl-C4 alkyl), or Ar 2 is monocyclic heteroaryl substituted with 0-3 substituents independently selected from halogen, cyano, Cl- C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, C1-C4 polyhaloalkyl,— NH 2 , -NH(C1-C4 alkyl), and— N
  • Disclosed are methods for the treatment of a neurological and/or psychiatric disorder associated with glutamate dysfunction in a mammal comprising the step of administering to the mammal a therapeutically effective amount of at least one compound having a structure represented by a formula:
  • Ar is phenyl substituted with 0-3 substituents independently selected from halogen, cyano, C1-C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or Ar 1 is monocyclic heteroaryl substituted with 0-3 substituents independently selected from halogen, cyano, Cl- C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl; wherein when— — is present and A 1 and A 2 are joined by a covalent double bond, A 1 is CR la , and A 2 is CR 2a ; wherein R la is selected from hydrogen, halogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and Cl- C4 polyhaloalkyl; wherein R 2a
  • R lb and R lc are independently selected from hydrogen, fluoro, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or R lb and R lc are covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7-membered spirocycloalkyl; wherein each of R 2b and R 2c are independently selected from hydrogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or R 2b and R 2c are covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7-membered spirocycloalkyl; wherein each of R 2b and R 2c are independently selected from hydrogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or R 2
  • R la and R 2a when present, are optionally covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7-membered fused cycloalkenyl; wherein R lb and R 2b , when present, are optionally covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7-membered fused cycloalkyl; wherein R , when is present, is selected from hydrogen, C1-C6 alkyl;
  • Also disclosed are methods for the treatment of a disease of uncontrolled cellular proliferation in a mammal comprising the step of administering to the mammal a therapeutically effective amount of at least one compound having a structure represented by a formula:
  • Ar is phenyl substituted with 0-3 substituents independently selected from halogen, cyano, C1-C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or Ar 1 is monocyclic heteroaryl substituted with 0-3 substituents independently selected from halogen, cyano, Cl- C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl; wherein when— — is present and A 1 and A 2 are joined by a covalent double bond, A 1 is CR la , and A 2 is CR 2a ; wherein R la is selected from hydrogen, halogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and Cl- C4 polyhaloalkyl; wherein R 2a
  • R lb and R lc are independently selected from hydrogen, fluoro, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or R lb and R lc are covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7-membered spirocycloalkyl; wherein each of R 2b and R 2c are independently selected from hydrogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or R 2b and R 2c are covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7-membered spirocycloalkyl; wherein each of R 2b and R 2c are independently selected from hydrogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or R 2
  • R la and R 2a when present, are optionally covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7-membered fused cycloalkenyl; wherein R lb and R 2b , when present, are optionally covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7-membered fused cycloalkyl; wherein R , when is present, is selected from hydrogen, C1-C6 alkyl;
  • Also disclosed are methods for potentiation of metabotropic glutamate receptor activity in a mammal comprising the step of administering to the mammal a therapeutically effective amount of at least one compound having a structure represented by a formula:
  • Ar is phenyl substituted with 0-3 substituents independently selected from halogen, cyano, C1-C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or Ar 1 is monocyclic heteroaryl substituted with 0-3 substituents independently selected from halogen, cyano, Cl- C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl; wherein when— — is present and A 1 and A 2 are joined by a covalent double bond, A 1 is CR la , and A 2 is CR 2a ; wherein R la is selected from hydrogen, halogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and Cl- C4 polyhaloalkyl; wherein R 2a
  • R lb and R lc are independently selected from hydrogen, fluoro, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or R lb and R lc are covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7-membered spirocycloalkyl; wherein each of R 2b and R 2c are independently selected from hydrogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or R 2b and R 2c are covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7-membered spirocycloalkyl; wherein each of R 2b and R 2c are independently selected from hydrogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or R 2
  • R la and R 2a when present, are optionally covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7-membered fused cycloalkenyl; wherein R lb and R 2b , when present, are optionally covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7-membered fused cycloalkyl; wherein R , when is present, is selected from hydrogen, C1-C6 alkyl;
  • Also disclosed are methods for partial agonism of metabotropic glutamate receptor activity in a mammal comprising the step of administering to the mammal a therapeutically effective amount of at least one compound having a structure represented by a formula:
  • Ar is phenyl substituted with 0-3 substituents independently selected from halogen, cyano, C1-C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or Ar 1 is monocyclic heteroaryl substituted with 0-3 substituents independently selected from halogen, cyano, Cl- C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl; wherein when— — is present and A 1 and A 2 are joined by a covalent double bond, A 1 is CR la , and A 2 is CR 2a ; wherein R la is selected from hydrogen, halogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and Cl- C4 polyhaloalkyl; wherein R 2a
  • R la and R 2a when present, are optionally covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7-membered fused cycloalkenyl; wherein R lb and R 2b , when present, are optionally covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7-membered fused cycloalkyl; wherein R , when is present, is selected from hydrogen, C1-C6 alkyl;
  • Also disclosed are methods for enhancing cognition in a mammal comprising the step of administering to the mammal an effective amount of at least one compound having a structure represented by a formula: wherein is an optional covalent bond, wherein valence is satisfied; wherein Ar is phenyl substituted with 0-3 substituents independently selected from halogen, cyano, C1-C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or Ar 1 is monocyclic heteroaryl substituted with 0-3 substituents independently selected from halogen, cyano, Cl- C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl; wherein when— — is present and A 1 and A 2 are joined by a covalent double bond, A 1 is CR la , and A 2 is CR 2a ; wherein
  • R lb and R lc are independently selected from hydrogen, fluoro, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or R lb and R lc are covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7-membered spirocycloalkyl; wherein each of R 2b and R 2c are independently selected from hydrogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or R 2b and R 2c are covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7-membered spirocycloalkyl; wherein each of R 2b and R 2c are independently selected from hydrogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or R 2
  • R la and R 2a when present, are optionally covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7-membered fused cycloalkenyl; wherein R lb and R 2b , when present, are optionally covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7-membered fused cycloalkyl; wherein R , when is present, is selected from hydrogen, C1-C6 alkyl;
  • Also disclosed are methods for modulating mGluR5 activity in a mammal comprising the step of administering to the mammal an effective amount of at least one compound having a structure represented by a formula:
  • Ar is phenyl substituted with 0-3 substituents independently selected from halogen, cyano, C1-C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or Ar 1 is monocyclic heteroaryl substituted with 0-3 substituents independently selected from halogen, cyano, Cl- C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl; wherein when— — is present and A 1 and A 2 are joined by a covalent double bond, A 1 is CR la , and A 2 is CR 2a ; wherein R la is selected from hydrogen, halogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and Cl- C4 polyhaloalkyl; wherein R 2a
  • R lb and R lc are independently selected from hydrogen, fluoro, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or R lb and R lc are covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7-membered spirocycloalkyl; wherein each of R 2b and R 2c are independently selected from hydrogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or R 2b and R 2c are covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7-membered spirocycloalkyl; wherein each of R 2b and R 2c are independently selected from hydrogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or R 2
  • R la and R 2a when present, are optionally covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7-membered fused cycloalkenyl; wherein R lb and R 2b , when present, are optionally covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7-membered fused cycloalkyl; wherein R , when is present, is selected from hydrogen, C1-C6 alkyl;
  • Also disclosed are methods modulating mGluR5 activity in at least one cell comprising the step of contacting the at least one cell with an effective amount of at least one compound having a structure represented by a formula:
  • Ar is phenyl substituted with 0-3 substituents independently selected from halogen, cyano, C1-C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or Ar 1 is monocyclic heteroaryl substituted with 0-3 substituents independently selected from halogen, cyano, Cl- C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl; wherein when— — is present and A 1 and A 2 are joined by a covalent double bond, A 1 is CR la , and A 2 is CR 2a ; wherein R la is selected from hydrogen, halogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and Cl- C4 polyhaloalkyl; wherein R 2a
  • R lb and R lc are independently selected from hydrogen, fluoro, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or R lb and R lc are covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7-membered spirocycloalkyl; wherein each of R 2b and R 2c are independently selected from hydrogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or R 2b and R 2c are covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7-membered spirocycloalkyl; wherein each of R 2b and R 2c are independently selected from hydrogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or R 2
  • R la and R 2a when present, are optionally covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7-membered fused cycloalkenyl; wherein R lb and R 2b , when present, are optionally covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7-membered fused cycloalkyl; wherein R , when is present, is selected from hydrogen, C1-C6 alkyl;
  • kits comprising at least one compound having a structure represented by a formula:
  • Ar is phenyl substituted with 0-3 substituents independently selected from halogen, cyano, C1-C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or Ar 1 is monocyclic heteroaryl substituted with 0-3 substituents independently selected from halogen, cyano, Cl- C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl; wherein when— — is present and A 1 and A 2 are joined by a covalent double bond, A 1 is CR la , and A 2 is CR 2a ; wherein R la is selected from hydrogen, halogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and Cl- C4 polyhaloalkyl; wherein R 2a
  • R lb and R lc are independently selected from hydrogen, fluoro, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or R lb and R lc are covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7-membered spirocycloalkyl; wherein each of R 2b and R 2c are independently selected from hydrogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or R 2b and R 2c are covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7-membered spirocycloalkyl; wherein each of R 2b and R 2c are independently selected from hydrogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or R 2
  • R la and R 2a when present, are optionally covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7-membered fused cycloalkenyl; wherein R lb and R 2b , when present, are optionally covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7-membered fused cycloalkyl; wherein R , when is present, is selected from hydrogen, C1-C6 alkyl;
  • Also disclosed are methods for manufacturing a medicament comprising combining at least one disclosed compound or at least one disclosed product with a pharmaceutically acceptable carrier or diluent.
  • Figure 1 shows a schematic of the NMDA receptor.
  • Figure 2 shows a schematic illustrating that activation of mGluR5 potentiates NMDA receptor function.
  • Figure 3 shows a schematic illustrating structural features of mGluR5 and allosteric binding.
  • Figure 4 shows a representative study demonstrating the dose-dependent reversal of amphetamine-induced hyperlocomotion by a representative disclosed compound.
  • Ranges can be expressed herein as from “about” one particular value, and/or to "about” another particular value. When such a range is expressed, a further aspect includes from the one particular value and/or to the other particular value. Similarly, when values are expressed as approximations, by use of the antecedent "about,” it will be understood that the particular value forms a further aspect. It will be further understood that the endpoints of each of the ranges are significant both in relation to the other endpoint, and independently of the other endpoint. It is also understood that there are a number of values disclosed herein, and that each value is also herein disclosed as "about” that particular value in addition to the value itself. For example, if the value "10” is disclosed, then “about 10" is also disclosed. It is also understood that each unit between two particular units are also disclosed. For example, if 10 and 15 are disclosed, then 11, 12, 13, and 14 are also disclosed.
  • references in the specification and concluding claims to parts by weight of a particular element or component in a composition denotes the weight relationship between the element or component and any other elements or components in the composition or article for which a part by weight is expressed.
  • X and Y are present at a weight ratio of 2:5, and are present in such ratio regardless of whether additional components are contained in the compound.
  • a weight percent (wt. %) of a component is based on the total weight of the formulation or composition in which the component is included.
  • the terms “optional” or “optionally” means that the subsequently described event or circumstance can or can not occur, and that the description includes instances where said event or circumstance occurs and instances where it does not.
  • allosteric site refers to a ligand binding site that is topographically distinct from the orthosteric binding site.
  • modulator refers to a molecular entity (e.g. , but not limited to, a ligand and a disclosed compound) that modulates the activity of the target receptor protein.
  • ligand refers to a a natural or synthetic molecular entity that is capable of associating or binding to a receptor to form a complex and mediate, prevent or modify a biological effect.
  • ligand encompasses allosteric modulators, inhibitors, activators, agonists, antagonists, natural substrates and analogs of natural substrates.
  • natural ligand and “endogenous ligand” are used interchangeably, and refer to a naturally occurring ligand, found in nature, which binds to a receptor.
  • the term "orthosteric site” refers to the primary binding site on a receptor that is recognized by the endogenous ligand or agonist for that receptor.
  • the orthosteric site in the mGluR5 receptor is the site that glutamate binds.
  • mGluR5 receptor positive allosteric modulator refers to any exogenously administered compound or agent that directly or indirectly augments the activity of the mGluR5 receptor in the presence or in the absence of glutamate in an animal, in particular a mammal, for example a human.
  • a mGluR5 receptor positive allosteric modulator increases the activity of the mGluR5 receptor in a cell in the presence of extracellular glutamate.
  • the cell can be human embryonic kidney cells transfected with human mGluR5.
  • the cell can be human embryonic kidney cells transfected with rat mGluR5.
  • the cell can be human embryonic kidney cells transfected with a mammalian mGluR5
  • mGluR5 receptor positive allosteric modulator includes a compound that is a
  • mGluR5 receptor allosteric potentiator or a “mGluR5 receptor allosteric agonist,” as well as a compound that has mixed activity comprising pharmacology of both an “mGluR5 receptor allosteric potentiator” and an “mGluR5 receptor allosteric agonist”.
  • mGluR5 receptor positive allosteric modulator also includes a compound that is a "mGluR5 receptor allosteric enhancer.”
  • mGluR5 receptor allosteric potentiator refers to any exogenously administered compound or agent that directly or indirectly augments the response produced by the endogenous ligand (such as glutamate) when the endogenous ligand binds to the orthosteric site of the mGluR5 receptor in an animal, in particular a mammal, for example a human.
  • the mGluR5 receptor allosteric potentiator binds to a site other than the orthosteric site, that is, an allosteric site, and positively augments the response of the receptor to an agonist or the endogenous ligand.
  • an allosteric potentiator does not induce desensitization of the receptor, activity of a compound as an mGluR5 receptor allosteric potentiator provides advantages over the use of a pure mGluR5 receptor allosteric agonist. Such advantages can include, for example, increased safety margin, higher tolerability, diminished potential for abuse, and reduced toxicity.
  • mGluR5 receptor allosteric enhancer refers to any exogenously administered compound or agent that directly or indirectly augments the response produced by the endogenous ligand in an animal, in particular a mammal, for example a human.
  • the allosteric enhancer increases the affinity of the natural ligand or agonist for the orthosteric site.
  • an allosteric enhancer increases the agonist efficacy.
  • the mGluR5 receptor allosteric enhancer binds to a site other than the orthosteric site, that is, an allosteric site, and positively augments the response of the receptor to an agonist or the endogenous ligand.
  • An allosteric enhancer has no effect on the receptor by itself and requires the presence of an agonist or the natural ligand to realize a receptor effect.
  • mGluR5 receptor allosteric agonist refers to any exogenously administered compound or agent that directly activates the activity of the mGluR5 receptor in the absence of the endogenous ligand (such as glutamate) in an animal, in particular a mammal, for example a human.
  • the mGluR5 receptor allosteric agonist binds to a site that is distinct from the orthosteric glutamate site of the mGluR5. Because it does not require the presence of the endogenous ligand, activity of a compound as an mGluR5 receptor allosteric agonist provides advantages over the use of a pure mGluR5 receptor allosteric potentiator, such as more rapid onset of action.
  • mGluR5 receptor neutral allosteric ligand refers to any exogenously administered compound or agent that binds to an allosteric site without affecting the binding or function of agonists or the natural ligand at the orthosteric site in an animal, in particular a mammal, for example a human.
  • a neutral allosteric ligand can block the action of other allosteric modulators that act via the same site.
  • the term "subject” can be a vertebrate, such as a mammal, a fish, a bird, a reptile, or an amphibian.
  • the subject of the herein disclosed methods can be a human, non-human primate, horse, pig, rabbit, dog, sheep, goat, cow, cat, guinea pig or rodent.
  • the term does not denote a particular age or sex. Thus, adult and newborn subjects, as well as fetuses, whether male or female, are intended to be covered.
  • the subject is a mammal.
  • a patient refers to a subject afflicted with a disease or disorder.
  • patient includes human and veterinary subjects.
  • the subject has been diagnosed with a need for treatment of one or more
  • the subject has been diagnosed with a need for positive allosteric modulation of metabotropic glutamate receptor activity prior to the administering step. In some aspects of the disclosed method, the subject has been diagnosed with a need for partial agonism of metabotropic glutamate receptor activity prior to the administering step.
  • treatment refers to the medical management of a patient with the intent to cure, ameliorate, stabilize, or prevent a disease, pathological condition, or disorder.
  • This term includes active treatment, that is, treatment directed specifically toward the improvement of a disease, pathological condition, or disorder, and also includes causal treatment, that is, treatment directed toward removal of the cause of the associated disease, pathological condition, or disorder.
  • this term includes palliative treatment, that is, treatment designed for the relief of symptoms rather than the curing of the disease, pathological condition, or disorder; preventative treatment, that is, treatment directed to minimizing or partially or completely inhibiting the development of the associated disease, pathological condition, or disorder; and supportive treatment, that is, treatment employed to supplement another specific therapy directed toward the improvement of the associated disease, pathological condition, or disorder.
  • palliative treatment that is, treatment designed for the relief of symptoms rather than the curing of the disease, pathological condition, or disorder
  • preventative treatment that is, treatment directed to minimizing or partially or completely inhibiting the development of the associated disease, pathological condition, or disorder
  • supportive treatment that is, treatment employed to supplement another specific therapy directed toward the improvement of the associated disease, pathological condition, or disorder.
  • the term covers any treatment of a subject, including a mammal (e.g.
  • a human includes: (i) preventing the disease from occurring in a subject that can be predisposed to the disease but has not yet been diagnosed as having it; (ii) inhibiting the disease, i.e., arresting its development; or (iii) relieving the disease, i.e., causing regression of the disease.
  • the subject is a mammal such as a primate, and, in a further aspect, the subject is a human.
  • subject also includes domesticated animals ⁇ e.g., cats, dogs, etc.), livestock ⁇ e.g., cattle, horses, pigs, sheep, goats, etc.), and laboratory animals ⁇ e.g., mouse, rabbit, rat, guinea pig, fruit fly, etc.).
  • domesticated animals e.g., cats, dogs, etc.
  • livestock e.g., cattle, horses, pigs, sheep, goats, etc.
  • laboratory animals e.g., mouse, rabbit, rat, guinea pig, fruit fly, etc.
  • prevent refers to precluding, averting, obviating, forestalling, stopping, or hindering something from happening, especially by advance action. It is understood that where reduce, inhibit or prevent are used herein, unless specifically indicated otherwise, the use of the other two words is also expressly disclosed.
  • diagnosisd means having been subjected to a physical examination by a person of skill, for example, a physician, and found to have a condition that can be diagnosed or treated by the compounds, compositions, or methods disclosed herein.
  • diagnosis with a disorder treatable by modulation of mGluR5 means having been subjected to a physical examination by a person of skill, for example, a physician, and found to have a condition that can be diagnosed or treated by a compound or composition that can modulate mGluR5.
  • diagnosis refers to having been subjected to a physical examination by a person of skill, for example, a physician, and found to have a condition characterized by mGluR5 activity.
  • a diagnosis can be in reference to a disorder, such as a neurodegenerative disease, and the like, as discussed herein.
  • diagnosis can be in reference to a disorder, such as a neurodegenerative disease, and the like, as discussed herein.
  • the term "diagnosed with a need for positive allosteric modulation of metabotropic glutamate receptor activity” refers to having been subjected to a physical examination by a person of skill, for example, a physician, and found to have a condition that can be diagnosed or treated by positive allosteric modulation of metabotropic glutamate receptor activity.
  • diagnosisd with a need for partial agonism of metabotropic glutamate receptor activity means having been subjected to a physical examination by a person of skill, for example, a physician, and found to have a condition that can be diagnosed or treated by partial agonism of metabotropic glutamate receptor activity.
  • diagnosisd with a need for treatment of one or more neurological and/or psychiatric disorder associated with glutamate dysfunction means having been subjected to a physical examination by a person of skill, for example, a physician, and found to have one or more neurological and/or psychiatric disorder associated with glutamate dysfunction.
  • the phrase "identified to be in need of treatment for a disorder," or the like, refers to selection of a subject based upon need for treatment of the disorder.
  • a subject can be identified as having a need for treatment of a disorder (e.g. , a disorder related to mGluR5 activity) based upon an earlier diagnosis by a person of skill and thereafter subjected to treatment for the disorder.
  • the identification can, in one aspect, be performed by a person different from the person making the diagnosis.
  • the administration can be performed by one who subsequently performed the administration.
  • administering and “administration” refer to any method of providing a pharmaceutical preparation to a subject. Such methods are well known to those skilled in the art and include, but are not limited to, oral administration, transdermal administration, administration by inhalation, nasal administration, topical administration, intravaginal administration, ophthalmic administration, intraaural administration,
  • intracerebral administration rectal administration, sublingual administration, buccal administration, and parenteral administration, including injectable such as intravenous administration, intra- arterial administration, intramuscular administration, and subcutaneous administration.
  • Administration can be continuous or intermittent.
  • a preparation can be administered therapeutically; that is, administered to treat an existing disease or condition.
  • a preparation can be administered
  • prophylactically that is, administered for prevention of a disease or condition.
  • contacting refers to bringing a disclosed compound and a cell, target metabotropic glutamate receptor, or other biological entity together in such a manner that the compound can affect the activity of the target (e.g., spliceosome, cell, etc.), either directly; i.e. , by interacting with the target itself, or indirectly; i.e. , by interacting with another molecule, co-factor, factor, or protein on which the activity of the target is dependent.
  • the target e.g., spliceosome, cell, etc.
  • the terms “effective amount” and “amount effective” refer to an amount that is sufficient to achieve the desired result or to have an effect on an undesired condition.
  • a “therapeutically effective amount” refers to an amount that is sufficient to achieve the desired therapeutic result or to have an effect on undesired symptoms, but is generally insufficient to cause adverse side affects.
  • the specific therapeutically effective dose level for any particular patient will depend upon a variety of factors including the disorder being treated and the severity of the disorder; the specific composition employed; the age, body weight, general health, sex and diet of the patient; the time of administration; the route of administration; the rate of excretion of the specific compound employed; the duration of the treatment; drugs used in combination or coincidental with the specific compound employed and like factors well known in the medical arts. For example, it is well within the skill of the art to start doses of a compound at levels lower than those required to achieve the desired therapeutic effect and to gradually increase the dosage until the desired effect is achieved. If desired, the effective daily dose can be divided into multiple doses for purposes of administration.
  • compositions can contain such amounts or submultiples thereof to make up the daily dose.
  • the dosage can be adjusted by the individual physician in the event of any contraindications. Dosage can vary, and can be administered in one or more dose administrations daily, for one or several days. Guidance can be found in the literature for appropriate dosages for given classes of pharmaceutical products.
  • a preparation can be administered in a "prophylactically effective amount"; that is, an amount effective for prevention of a disease or condition.
  • kit means a collection of at least two components constituting the kit. Together, the components constitute a functional unit for a given purpose. Individual member components may be physically packaged together or separately. For example, a kit comprising an instruction for using the kit may or may not physically include the instruction with other individual member components. Instead, the instruction can be supplied as a separate member component, either in a paper form or an electronic form which may be supplied on computer readable memory device or downloaded from an internet website, or as recorded presentation.
  • instruction(s) means documents describing relevant materials or methodologies pertaining to a kit. These materials may include any combination of the following: background information, list of components and their availability information (purchase information, etc.), brief or detailed protocols for using the kit, trouble-shooting, references, technical support, and any other related documents. Instructions can be supplied with the kit or as a separate member component, either as a paper form or an electronic form which may be supplied on computer readable memory device or downloaded from an internet website, or as recorded presentation. Instructions can comprise one or multiple documents, and are meant to include future updates.
  • therapeutic agent include any synthetic or naturally occurring biologically active compound or composition of matter which, when administered to an organism (human or nonhuman animal), induces a desired pharmacologic,
  • immunogenic, and/or physiologic effect by local and/or systemic action encompasses those compounds or chemicals traditionally regarded as drugs, vaccines, and biopharmaceuticals including molecules such as proteins, peptides, hormones, nucleic acids, gene constructs and the like.
  • therapeutic agents include, without limitation, medicaments; vitamins; mineral supplements; substances used for the treatment, prevention, diagnosis, cure or mitigation of a disease or illness; substances that affect the structure or function of the body, or pro-drugs, which become biologically active or more active after they have been placed in a physiological environment.
  • the term "therapeutic agent” includes compounds or compositions for use in all of the major therapeutic areas including, but not limited to, adjuvants; anti-infectives such as antibiotics and antiviral agents; analgesics and analgesic combinations, anorexics, anti-inflammatory agents, anti-epileptics, local and general anesthetics, hypnotics, sedatives, antipsychotic agents, neuroleptic agents, antidepressants, anxiolytics, antagonists, neuron blocking agents, anticholinergic and cholinomimetic agents, antimuscarinic and muscarinic agents, antiadrenergics, antiarrhythmics, antihypertensive agents, hormones, and nutrients, antiarthritics, antiasthmatic agents, anticonvulsants, antihistamines, antinauseants, antineoplastics, antipruritics, antipyretics; antispasmodics, cardiovascular preparations (including calcium channel blockers, beta-blockers, an
  • the agent may be a biologically active agent used in medical, including veterinary, applications and in agriculture, such as with plants, as well as other areas.
  • therapeutic agent also includes without limitation, medicaments; vitamins; mineral supplements; substances used for the treatment, prevention, diagnosis, cure or mitigation of disease or illness; or substances which affect the structure or function of the body; or pro- drugs, which become biologically active or more active after they have been placed in a predetermined physiological environment.
  • EC 50 is intended to refer to the concentration of a substance (e.g., a compound or a drug) that is required for 50% activation or enhancement of a biological process, or component of a process.
  • EC 50 can refer to the concentration of agonist that provokes a response halfway between the baseline and maximum response in an in vitro assay.
  • an EC 50 for mGluR5 receptor can be determined in an in vitro or cell-based assay system.
  • Such in vitro assay systems frequently utilize a cell line that either expresses endogenously a target of interest, or has been transfected with a suitable expression vector that directs expression of a recombinant form of the target such as mGluR5.
  • the EC 50 for mGluR5 can be determined using human embryonic kidney (HEK) cells transfected with human mGluR5.
  • the EC 50 for mGluR5 can be determined using human embryonic kidney (HEK) cells transfected with rat mGluR5.
  • the EC 50 for mGluR5 can be determined using human embryonic kidney (HEK) cells transfected with a mammalian mGluR5.
  • IC 50 is intended to refer to the concentration of a substance (e.g., a compound or a drug) that is required for 50% inhibition of a biological process, or component of a process.
  • IC 50 refers to the half maximal (50%) inhibitory concentration (IC) of a substance as determined in a suitable assay.
  • an IC 50 for mGluR5 receptor can be determined in an in vitro or cell-based assay system. Frequently, receptor assays, including suitable assays for mGluR5, make use of a suitable cell-line, e.g.
  • the IC 50 for mGluR5 can be determined using human embryonic kidney (HEK) cells transfected with human mGluR5.
  • the IC 50 for mGluR5 can be determined using human embryonic kidney (HEK) cells transfected with rat mGluR5.
  • the IC 50 for mGluR5 can be determined using human embryonic kidney (HEK) cells transfected with a mammalian mGluR5.
  • pharmaceutically acceptable describes a material that is not biologically or otherwise undesirable, i.e., without causing an unacceptable level of undesirable biological effects or interacting in a deleterious manner.
  • the term "derivative" refers to a compound having a structure derived from the structure of a parent compound ⁇ e.g., a compound disclosed herein) and whose structure is sufficiently similar to those disclosed herein and based upon that similarity, would be expected by one skilled in the art to exhibit the same or similar activities and utilities as the claimed compounds, or to induce, as a precursor, the same or similar activities and utilities as the claimed compounds.
  • exemplary derivatives include salts, esters, amides, salts of esters or amides, and N-oxides of a parent compound.
  • the term "pharmaceutically acceptable carrier” refers to sterile aqueous or nonaqueous solutions, dispersions, suspensions or emulsions, as well as sterile powders for reconstitution into sterile injectable solutions or dispersions just prior to use.
  • suitable aqueous and nonaqueous carriers, diluents, solvents or vehicles include water, ethanol, polyols (such as glycerol, propylene glycol, polyethylene glycol and the like), carboxymethylcellulose and suitable mixtures thereof, vegetable oils (such as olive oil) and injectable organic esters such as ethyl oleate.
  • Proper fluidity can be maintained, for example, by the use of coating materials such as lecithin, by the maintenance of the required particle size in the case of dispersions and by the use of surfactants.
  • These compositions can also contain adjuvants such as preservatives, wetting agents, emulsifying agents and dispersing agents.
  • Prevention of the action of microorganisms can be ensured by the inclusion of various antibacterial and antifungal agents such as paraben, chlorobutanol, phenol, sorbic acid and the like. It can also be desirable to include isotonic agents such as sugars, sodium chloride and the like.
  • Prolonged absorption of the injectable pharmaceutical form can be brought about by the inclusion of agents, such as aluminum monostearate and gelatin, which delay absorption.
  • Injectable depot forms are made by forming microencapsule matrices of the drug in biodegradable polymers such as polylactide-polyglycolide, poly(orthoesters) and poly( anhydrides). Depending upon the ratio of drug to polymer and the nature of the particular polymer employed, the rate of drug release can be controlled. Depot injectable formulations are also prepared by entrapping the drug in liposomes or microemulsions which are compatible with body tissues.
  • the injectable formulations can be sterilized, for example, by filtration through a bacterial-retaining filter or by incorporating sterilizing agents in the form of sterile solid compositions which can be dissolved or dispersed in sterile water or other sterile injectable media just prior to use.
  • Suitable inert carriers can include sugars such as lactose. Desirably, at least 95% by weight of the particles of the active ingredient have an effective particle size in the range of 0.01 to 10 micrometers.
  • a residue of a chemical species refers to the moiety that is the resulting product of the chemical species in a particular reaction scheme or subsequent formulation or chemical product, regardless of whether the moiety is actually obtained from the chemical species.
  • an ethylene glycol residue in a polyester refers to one or more -OCH 2 CH 2 O- units in the polyester, regardless of whether ethylene glycol was used to prepare the polyester.
  • a sebacic acid residue in a polyester refers to one or more -CO(CH 2 ) 8 CO- moieties in the polyester, regardless of whether the residue is obtained by reacting sebacic acid or an ester thereof to obtain the polyester.
  • the term "substituted" is contemplated to include all permissible substituents of organic compounds.
  • the permissible substituents include acyclic and cyclic, branched and unbranched, carbocyclic and heterocyclic, and aromatic and nonaromatic substituents of organic compounds.
  • Illustrative substituents include, for example, those described below.
  • the permissible substituents can be one or more and the same or different for appropriate organic compounds.
  • the heteroatoms, such as nitrogen can have hydrogen substituents and/or any permissible substituents of organic compounds described herein which satisfy the valences of the heteroatoms.
  • substitution or “substituted with” include the implicit proviso that such substitution is in accordance with permitted valence of the substituted atom and the substituent, and that the substitution results in a stable compound, e.g., a compound that does not spontaneously undergo transformation such as by rearrangement, cyclization, elimination, etc. It is also contemplated that, in certain aspects, unless expressly indicated to the contrary, individual substituents can be further optionally substituted (i.e., further substituted or unsubstituted).
  • a 1 ,” “A 2 ,” “A 3 ,” and “A 4 " are used herein as generic symbols to represent various specific substituents. These symbols can be any substituent, not limited to those disclosed herein, and when they are defined to be certain substituents in one instance, they can, in another instance, be defined as some other substituents.
  • aliphatic or "aliphatic group,” as used herein, denotes a hydrocarbon moiety that may be straight-chain (i.e., unbranched), branched, or cyclic (including fused, bridging, and spirofused polycyclic) and may be completely saturated or may contain one or more units of unsaturation, but which is not aromatic. Unless otherwise specified, aliphatic groups contain 1-20 carbon atoms.
  • Aliphatic groups include, but are not limited to, linear or branched, alkyl, alkenyl, and alkynyl groups, and hybrids thereof such as (cycloalkyl)alkyl, (cycloalkenyl)alkyl or (cycloalkyl)alkenyl.
  • alkyl as used herein is a branched or unbranched saturated
  • hydrocarbon group of 1 to 24 carbon atoms such as methyl, ethyl, w-propyl, isopropyl, n- butyl, isobutyl, s-butyl, i-butyl, w-pentyl, isopentyl, s-pentyl, neopentyl, hexyl, heptyl, octyl, nonyl, decyl, dode cyl, tetradecyl, hexadecyl, eicosyl, tetracosyl, and the like. It is understand that the alkyl group is acyclic. The alkyl group can be branched or unbranched.
  • the alkyl group can also be substituted or unsubstituted.
  • the alkyl group can be substituted with one or more groups including, but not limited to, alkyl, cycloalkyl, alkoxy, amino, ether, halide, hydroxy, nitro, silyl, sulfo-oxo, or thiol, as described herein.
  • a "lower alkyl” group is an alkyl group containing from one to six (e.g., from one to four) carbon atoms.
  • alkyl group can also be a CI alkyl, C1-C2 alkyl, C1-C3 alkyl, C1-C4 alkyl, C1-C5 alkyl, C1-C6 alkyl, C1-C7 alkyl, C1-C8 alkyl, C1-C9 alkyl, C1-C10 alkyl, and the like up to and including a C1-C24 alkyl.
  • alkyl is generally used to refer to both
  • halogenated alkyl or haloalkyl
  • halogenated alkyl specifically refers to an alkyl group that is substituted with one or more halide, e.g., fluorine, chlorine, bromine, or iodine.
  • monohaloalkyl specifically refers to an alkyl group that is substituted with a single halide, e.g. fluorine, chlorine, bromine, or iodine.
  • polyhaloalkyl specifically refers to an alkyl group that is independently substituted with two or more halides, i.e. each halide substituent need not be the same halide as another halide substituent, nor do the multiple instances of a halide substituent need to be on the same carbon.
  • alkoxyalkyl specifically refers to an alkyl group that is substituted with one or more alkoxy groups, as described below.
  • aminoalkyl specifically refers to an alkyl group that is substituted with one or more amino groups.
  • hydroxyalkyl specifically refers to an alkyl group that is substituted with one or more hydroxy groups.
  • cycloalkyl as used herein is a non-aromatic carbon-based ring composed of at least three carbon atoms.
  • examples of cycloalkyl groups include, but are not limited to, cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, norbornyl, and the like.
  • the cycloalkyl group can be substituted or unsubstituted.
  • the cycloalkyl group can be substituted with one or more groups including, but not limited to, alkyl, cycloalkyl, alkoxy, amino, ether, halide, hydroxy, nitro, silyl, sulfo-oxo, or thiol as described herein.
  • polyalkylene group as used herein is a group having two or more CH 2 groups linked to one another.
  • the polyalkylene group can be represented by the formula— (CH 2 ) a — , where "a" is an integer of from 2 to 500.
  • Alkoxy also includes polymers of alkoxy groups as just described; that is, an alkoxy can be a polyether such as— OA 1— OA 2 or— OA 1 — (OA 2 ) a — OA 3 , where "a” is an integer of from 1 to 200 and A 1 , A 2 , and A 3 are alkyl and/or cycloalkyl groups.
  • alkenyl as used herein is a hydrocarbon group of from 2 to 24 carbon atoms with a structural formula containing at least one carbon-carbon double bond.
  • the alkenyl group can be substituted with one or more groups including, but not limited to, alkyl, cycloalkyl, alkoxy, alkenyl, cycloalkenyl, alkynyl, cycloalkynyl, aryl, heteroaryl, aldehyde, amino, carboxylic acid, ester, ether, halide, hydroxy, ketone, azide, nitro, silyl, sulfo-oxo, or thiol, as described herein.
  • groups including, but not limited to, alkyl, cycloalkyl, alkoxy, alkenyl, cycloalkenyl, alkynyl, cycloalkynyl, aryl, heteroaryl, aldehyde, amino, carboxylic acid, ester, ether, halide, hydroxy, ketone, azide, nitro, silyl, sulfo-oxo, or thiol, as described here
  • Examples of cycloalkenyl groups include, but are not limited to, cyclopropenyl, cyclobutenyl, cyclopentenyl, cyclopentadienyl, cyclohexenyl, cyclohexadienyl, norbornenyl, and the like.
  • the cycloalkenyl group can be substituted or unsubstituted.
  • the cycloalkenyl group can be substituted with one or more groups including, but not limited to, alkyl, cycloalkyl, alkoxy, alkenyl, cycloalkenyl, alkynyl, cycloalkynyl, aryl, heteroaryl, aldehyde, amino, carboxylic acid, ester, ether, halide, hydroxy, ketone, azide, nitro, silyl, sulfo-oxo, or thiol as described herein.
  • alkynyl is a hydrocarbon group of 2 to 24 carbon atoms with a structural formula containing at least one carbon-carbon triple bond.
  • the alkynyl group can be unsubstituted or substituted with one or more groups including, but not limited to, alkyl, cycloalkyl, alkoxy, alkenyl, cycloalkenyl, alkynyl, cycloalkynyl, aryl, heteroaryl, aldehyde, amino, carboxylic acid, ester, ether, halide, hydroxy, ketone, azide, nitro, silyl, sulfo-oxo, or thiol, as described herein.
  • cycloalkynyl as used herein is a non-aromatic carbon-based ring composed of at least seven carbon atoms and containing at least one carbon-carbon triple bound.
  • cycloalkynyl groups include, but are not limited to, cycloheptynyl, cyclooctynyl, cyclononynyl, and the like.
  • the cycloalkynyl group can be substituted or unsubstituted.
  • the cycloalkynyl group can be substituted with one or more groups including, but not limited to, alkyl, cycloalkyl, alkoxy, alkenyl, cycloalkenyl, alkynyl, cycloalkynyl, aryl, heteroaryl, aldehyde, amino, carboxylic acid, ester, ether, halide, hydroxy, ketone, azide, nitro, silyl, sulfo-oxo, or thiol as described herein.
  • aromatic group refers to a ring structure having cyclic clouds of delocalized ⁇ electrons above and below the plane of the molecule, where the ⁇ clouds contain (4n+2) ⁇ electrons.
  • aromaticity is found in Morrison and Boyd, Organic Chemistry , (5th Ed., 1987), Chapter 13, entitled “ Aromaticity,” pages 477-497, incorporated herein by reference.
  • aromatic group is inclusive of both aryl and heteroaryl groups.
  • aryl as used herein is a group that contains any carbon-based aromatic group including, but not limited to, benzene, naphthalene, phenyl, biphenyl, anthracene, and the like.
  • the aryl group can be substituted or unsubstituted.
  • the aryl group can be substituted with one or more groups including, but not limited to, alkyl, cycloalkyl, alkoxy, alkenyl, cycloalkenyl, alkynyl, cycloalkynyl, aryl, heteroaryl, aldehyde,— NH 2 , carboxylic acid, ester, ether, halide, hydroxy, ketone, azide, nitro, silyl, sulfo-oxo, or thiol as described herein.
  • biasing is a specific type of aryl group and is included in the definition of "aryl.”
  • the aryl group can be a single ring structure or comprise multiple ring structures that are either fused ring structures or attached via one or more bridging groups such as a carbon- carbon bond.
  • biaryl refers to two aryl groups that are bound together via a fused ring structure, as in naphthalene, or are attached via one or more carbon-carbon bonds, as in biphenyl.
  • aldehyde as used herein is represented by the formula— C(0)H.
  • NA 1 A2 where A 1 and A 2 can be, independently, hydrogen or alkyl, cycloalkyl, alkenyl, cycloalkenyl, alkynyl, cycloalkynyl, aryl, or heteroaryl group as described herein.
  • a specific example of amino is— NH 2 .
  • alkylamino as used herein is represented by the formulas— NH(— alkyl) and— N(— alkyl) 2 , and where alkyl is as described herein.
  • the alkyl group can be a CI alkyl, C1-C2 alkyl, C1-C3 alkyl, C1-C4 alkyl, C1-C5 alkyl, C1-C6 alkyl, C1-C7 alkyl, C1-C8 alkyl, C1-C9 alkyl, C1-C10 alkyl, and the like, up to and including a C1-C24 alkyl.
  • Representative examples include, but are not limited to, methylamino group, ethylamino group, propylamino group, isopropylamino group, butylamino group, isobutylamino group, (sec-butyl)amino group, (tert-butyl)amino group, pentylamino group, isopentylamino group, (tert-pentyl) amino group, hexylamino group, N-ethyl-N-methylamino group, N-methyl-N-propylamino group, and N-ethyl-N-propylamino group.
  • Representative examples include, but are not limited to, dimethylamino group, diethylamino group, dipropylamino group, diisopropylamino group, dibutylamino group, diisobutylamino group, di(sec-butyl)amino group, di(tert-butyl)amino group, dipentylamino group, diisopentylamino group, di(tert-pentyl)amino group, dihexylamino group, N-ethyl-N-methylamino group, N-methyl-N-propylamino group, N- ethyl-N-propylamino group, and the like.
  • the term "monoalkylamino" as used herein is represented by the formula — NH(— alkyl), where alkyl is as described herein.
  • the alkyl group can be a CI alkyl, C1-C2 alkyl, C1-C3 alkyl, C1-C4 alkyl, C1-C5 alkyl, C1-C6 alkyl, C1-C7 alkyl, C1-C8 alkyl, C1-C9 alkyl, CI -CIO alkyl, and the like, up to and including a C1-C24 alkyl.
  • Representative examples include, but are not limited to, methylamino group, ethylamino group, propylamino group, isopropylamino group, butylamino group, isobutylamino group, (sec-butyl)amino group, (tert-butyl)amino group, pentylamino group, isopentylamino group, (tert-pentyl) amino group, hexylamino group, and the like.
  • dialkylamino as used herein is represented by the formula
  • alkyl group can be a CI alkyl, C1-C2 alkyl, C1-C3 alkyl, C1-C4 alkyl, C1-C5 alkyl, C1-C6 alkyl, C1-C7 alkyl, C1-C8 alkyl, C1-C9 alkyl, CI -CIO alkyl, and the like, up to and including a C1-C24 alkyl. It is understood that each alkyl group can be independently varied, e.g.
  • N-ethyl-N-methylamino group N-methyl-N-propylamino group
  • N-ethyl-N-propylamino group Representative examples include, but are not limited to, dimethylamino group, diethylamino group, dipropylamino group, diisopropylamino group, dibutylamino group, diisobutylamino group, di(sec-butyl)amino group, di(tert-butyl)amino group, dipentylamino group, diisopentylamino group, di(tert-pentyl)amino group, dihexylamino group, N-ethyl-N- methylamino group, N-methyl-N-propylamino group, N-ethyl-N-propylamino group, and the like.
  • carboxylic acid as used herein is represented by the formula [0098]
  • ester as used herein is represented by the formula— OC(0)A 1 or— ( ⁇ ) ⁇ 1 , where A 1 can be alkyl, cycloalkyl, alkenyl, cycloalkenyl, alkynyl, cycloalkynyl, aryl, or heteroaryl group as described herein.
  • polyyester as used herein is represented by the formula— (A 1 0(0)C-A 2 -C(0)0) a — or— (A 1 0(0)C-A 2 -OC(0)) a — ,
  • a and A can be, independently, an alkyl, cycloalkyl, alkenyl, cycloalkenyl, alkynyl, cycloalkynyl, aryl, or heteroaryl group described herein and "a” is an interger from 1 to 500.
  • Polyethylene is as the term used to describe a group that is produced by the reaction between a compound having at least two carboxylic acid groups with a compound having at least two hydroxyl groups.
  • ether as used herein is represented by the formula A ⁇ A 2 , where A 1 and A can be, independently, an alkyl, cycloalkyl, alkenyl, cycloalkenyl, alkynyl, cycloalkynyl, aryl, or heteroaryl group described herein.
  • polyether as used herein
  • a and A can be, independently, an alkyl, cycloalkyl, alkenyl, cycloalkenyl, alkynyl, cycloalkynyl, aryl, or heteroaryl group described herein and "a" is an integer of from 1 to 500.
  • polyether groups include polyethylene oxide, polypropylene oxide, and polybutylene oxide.
  • pseudohalide pseudohalogen or "pseudohalo,” as used herein can be used interchangeably and refer to functional groups that behave substantially similar to halides.
  • Such functional groups include, by way of example, cyano, thiocyanato, azido, trifluoromethyl, trifluoromethoxy, perfluoroalkyl, and perfluoroalkoxy groups.
  • heteroalkyl refers to an alkyl group containing at least one heteroatom. Suitable heteroatoms include, but are not limited to, O, N, Si, P and S, wherein the nitrogen, phosphorous and sulfur atoms are optionally oxidized, and the nitrogen heteroatom is optionally quaternized. Heteroalkyls can be substituted as defined above for alkyl groups.
  • heteroaryl refers to an aromatic group that has at least one heteroatom incorporated within the ring of the aromatic group.
  • heteroatoms include, but are not limited to, nitrogen, oxygen, sulfur, and phosphorus, where N-oxides, sulfur oxides, and dioxides are permissible heteroatom substitutions.
  • the heteroaryl group can be substituted or unsubstituted, and the heteroaryl group can be monocyclic, bicyclic or multicyclic aromatic ring.
  • the heteroaryl group can be substituted with one or more groups including, but not limited to, alkyl, cycloalkyl, alkoxy, amino, ether, halide, hydroxy, nitro, silyl, sulfo-oxo, or thiol as described herein. . It is understood that a heteroaryl group may be bound either through a heteroatom in the ring, where chemically possible, or one of carbons comprising the heteroaryl ring.
  • heteroaryl groups include, without limitation, oxygen-containing rings, nitrogen-containing rings, sulfur-containing rings, mixed
  • heteroaryl rings include furyl, pyrrolyl, pyrazolyl, imidazolyl, triazolyl, pyridinyl, pyridazinyl, pyrimidinyl, pyrazinyl, azepinyl, triazinyl, thienyl, oxazolyl, thiazolyl, oxadiazolyl, oxatriazolyl, oxepinyl, thiepinyl, diazepinyl, benzofuranyl,
  • thionapthene indolyl, benzazolyl, pyranopyrrolyl, isoindazolyl, indoxazinyl, benzoxazolyl, quinolinyl, isoquinolinyl, benzodiazonyl, naphthyridinyl, benzothienyl, pyridopyridinyl, acridinyl, carbazolyl and purinyl rings.
  • monocyclic heteroaryl refers to a monocyclic ring system which is aromatic and in which at least one of the ring atoms is a heteroatom.
  • Monocyclic heteroaryl groups include, but are not limited, to the following exemplary groups: pyridine, pyrimidine, pyridazine, pyrazine, furan, thiophene, pyrrole, isoxazole, isothiazole, pyrazole, oxazole, thiazole, imidazole, oxadiazole, including, 1,2,3-oxadiazole, 1,2,5- oxadiazole and 1,3,4- thiadiazole, including, 1,2,3-thiadiazole, 1,2,5-thiadiazole, and 1,3,4- thiadiazole, triazole, including, 1,2,3-triazole, 1,3,4-triazole, tetrazole, including 1,2,3,4- tetrazole and 1,2,4,5-tetrazole, triazine, including 1,2,4-triazine and 1,3,5-triazine, tetrazine, including 1,2,4,5-tetraz
  • bicyclic heteroaryl refers to a ring system comprising a bicyclic ring system in which at least one of the two rings is aromatic and at least one of the two rings contains a heteroatom.
  • Bicyclic heteroaryl encompasses ring systems wherein an aromatic ring is fused with another aromatic ring, or wherein an aromatic ring is fused with a non-aromatic ring.
  • Bicyclic heteroaryl encompasses ring systems wherein a benzene ring is fused to a 5- or a 6-membered ring containing 1, 2 or 3 ring heteroatoms or wherein a pyridine ring is fused to a 5- or a 6-membered ring containing 1, 2 or 3 ring heteroatoms.
  • bicyclic heteroaryl groups include without limitation indolyl, isoindolyl, indolyl, indolinyl, indolizinyl, quinolinyl, isoquinolinyl, benzofuryl, bexothiophenyl, indazolyl, benzimidazolyl, benzothiazinyl, benzothiazolyl, purinyl, quinolizyl, quinolyl, isoquinolyl, cinnolinyl, phthalazinyl, quinazolizinyl, quinoxalyl, naphthyridinyl, and pteridyl.
  • Bicyclic heteroaryls are numbered according to standard chemical nomenclature.
  • heterocycloalkyl refers to an aliphatic, partially unsaturated or fully saturated, 3- to 14-membered ring system, including single rings of 3 to 8 atoms and bi- and tricyclic ring systems where at least one of the carbon atoms of the ring is replaced with a heteroatom such as, but not limited to, nitrogen, oxygen, sulfur, or
  • a heterocycloalkyl can include one to four heteroatoms independently selected from oxygen, nitrogen, and sulfur, wherein a nitrogen and sulfur heteroatom optionally can be oxidized and a nitrogen heteroatom optionally can be substituted.
  • heterocycloalkyl groups include, but are not limited, to the following exemplary groups: pyrrolidinyl, pyrazolinyl, pyrazolidinyl, imidazolinyl, imidazolidinyl, piperidinyl, piperazinyl, oxazolidinyl, isoxazolidinyl, morpholinyl, thiazolidinyl, isothiazolidinyl, and tetrahydrofuryl.
  • heterocycloalkyl group can also be a C2 heterocycloalkyl, C2-C3 heterocycloalkyl, C2-C4 heterocycloalkyl, C2-C5 heterocycloalkyl, C2-C6 heterocycloalkyl, C2-C7
  • a C2 heterocycloalkyl comprises a group which has two carbon atoms and at least one heteroatom, including, but not limited to, aziridinyl, diazetidinyl, oxiranyl, thiiranyl, and the like.
  • a C5 heterocycloalkyl comprises a group which has five carbon atoms and at least one heteroatom, including, but not limited to, piperidinyl, tetrahydropyranyl, tetrahydrothiopyranyl, diazepanyl, and the like. It is understood that a heterocycloalkyl group may be bound either through a heteroatom in the ring, where chemically possible, or one of carbons comprising the heterocycloalkyl ring.
  • heterocycloalkyl group can be substituted or unsubstituted.
  • the heterocycloalkyl group can be substituted with one or more groups including, but not limited to, alkyl, cycloalkyl, alkoxy, amino, ether, halide, hydroxy, nitro, silyl, sulfo-oxo, or thiol as described herein.
  • hydroxyl or "hydroxy” as used herein is represented by the formula -OH.
  • ketone as used herein is represented by the formula ⁇ (0) ⁇ 2 , where A 1 and A 2" can be, independently, an alkyl, cycloalkyl, alkenyl, cycloalkenyl, alkynyl, cycloalkynyl, aryl, or heteroaryl group as described herein.
  • a 1 , A2 , and A 3 J can be, independently, hydrogen or an alkyl, cycloalkyl, alkoxy, alkenyl, cycloalkenyl, alkynyl, cycloalkynyl, aryl, or heteroaryl group as described herein.
  • sulfo-oxo is represented by the formulas— S(0)A 1 ,— S(0) 2 A 1 ,— OSCODA 1 , or— OS(0) 2 OA 1 , where A 1 can be hydrogen or an alkyl, cycloalkyl, alkenyl, cycloalkenyl, alkynyl, cycloalkynyl, aryl, or heteroaryl group as described herein.
  • a 1 can be hydrogen or an alkyl, cycloalkyl, alkenyl, cycloalkenyl, alkynyl, cycloalkynyl, aryl, or heteroaryl group as described herein.
  • sulfonyl is used herein to refer to the sulfo-oxo group represented by the formula— SiO ⁇ A 1 , where A 1 can be hydrogen or an alkyl, cycloalkyl, alkenyl, cycloalkenyl, alkynyl, cycloalkynyl, aryl, or heteroaryl group as described herein.
  • sulfone as used herein is represented by the formula A 1 S(0) 2 A2 , where A 1 and A2 can be, independently, an alkyl, cycloalkyl, alkenyl, cycloalkenyl, alkynyl, cycloalkynyl, aryl, or heteroaryl group as described herein.
  • sulfoxide as used herein is represented by the formula A 1 S(0)A2 , where A 1 and A2 can be, independently, an alkyl, cycloalkyl, alkenyl, cycloalkenyl, alkynyl, cycloalkynyl, aryl, or heteroaryl group as described herein.
  • R 1 ,” “R 2 ,” “R 3 ,” “R n ,” where n is an integer, as used herein can, independently, possess one or more of the groups listed above.
  • R 1 is a straight chain alkyl group
  • one of the hydrogen atoms of the alkyl group can optionally be substituted with a hydroxyl group, an alkoxy group, an alkyl group, a halide, and the like.
  • a first group can be incorporated within second group or,
  • the first group can be pendant (i.e., attached) to the second group.
  • an alkyl group comprising an amino group the amino group can be incorporated within the backbone of the alkyl group.
  • the amino group can be attached to the backbone of the alkyl group.
  • the nature of the group(s) that is (are) selected will determine if the first group is embedded or attached to the second group.
  • compounds of the invention may contain "optionally substituted" moieties.
  • substituted whether preceded by the term “optionally” or not, means that one or more hydrogens of the designated moiety are replaced with a suitable substituent.
  • an "optionally substituted" group may have a suitable substituent at each substitutable position of the group, and when more than one position in any given structure may be substituted with more than one substituent selected from a specified group, the substituent may be either the same or different at every position.
  • Combinations of substituents envisioned by this invention are preferably those that result in the formation of stable or chemically feasible compounds.
  • individual substituents can be further optionally substituted (i.e., further substituted or unsubstituted).
  • stable refers to compounds that are not substantially altered when subjected to conditions to allow for their production, detection, and, in certain aspects, their recovery, purification, and use for one or more of the purposes disclosed herein.
  • Suitable monovalent substituents on R° are independently halogen, -(CH 2 ) ⁇ 2 R*, -(haloR*), -(CH 2 )o- 2 OH, -(CH 2 )o- 2 OR*, -(CH 2 )o- 2 CH(OR*) 2 ; -O(haloR'), -CN, -N 3 , -(CH 2 )o. 2 C(0)R*, -(CH 2 )o.
  • Suitable divalent substituents that are bound to vicinal substitutable carbons of an "optionally substituted” group include: -0(CR 2 ) 2 _ 3 0-, wherein each independent occurrence of R is selected from hydrogen, Ci_ 6 aliphatic which may be substituted as defined below, or an unsubstituted 5-6-membered saturated, partially unsaturated, or aryl ring having 0-4 heteroatoms independently selected from nitrogen, oxygen, or sulfur.
  • Suitable substituents on the aliphatic group of R * include halogen, -
  • Suitable substituents on a substitutable nitrogen of an "optionally substituted" group include -R ⁇ , -NR ⁇ 2 , -C(0)R ⁇ , -C(0)OR ⁇ , -C(0)C(0)R ⁇ , -C(0)CH 2 C(0)R ⁇ , - S(0) 2 R ⁇ , -S(0) 2 NR ⁇ 2 , -C(S)NR ⁇ 2 , -C(NH)NR ⁇ 2 , or -N(R ⁇ )S(0) 2 R ⁇ ; wherein each R ⁇ is independently hydrogen, Ci_ 6 aliphatic which may be substituted as defined below, unsubstituted -OPh, or an unsubstituted 5-6-membered saturated, partially unsaturated, or aryl ring having 0-4 heteroatoms independently selected from nitrogen, oxygen, or sulfur, or, notwithstanding the definition above, two independent occurrences of R ⁇ , taken together with their intervening atom
  • Suitable substituents on the aliphatic group of R ⁇ are independently halogen, - R*, -(haloR*), -OH, -OR*, -O(haloR'), -CN, -C(0)OH, -C(0)OR*, -NH 2 , -NHR*, -NR* 2 , or -N0 2 , wherein each R* is unsubstituted or where preceded by "halo" is substituted only with one or more halogens, and is independently Q_ 4 aliphatic, -CH 2 Ph, -0(CH 2 )o-iPh, or a 5-6-membered saturated, partially unsaturated, or aryl ring having 0-4 heteroatoms independently selected from nitrogen, oxygen, or sulfur.
  • leaving group refers to an atom (or a group of atoms) with electron withdrawing ability that can be displaced as a stable species, taking with it the bonding electrons.
  • suitable leaving groups include halides and sulfonate esters, including, but not limited to, triflate, mesylate, tosylate, and brosylate.
  • hydrolysable group and “hydrolysable moiety” refer to a functional group capable of undergoing hydrolysis, e.g., under basic or acidic conditions.
  • hydrolysable residues include, without limitatation, acid halides, activated carboxylic acids, and various protecting groups known in the art (see, for example, "Protective Groups in Organic Synthesis,” T. W. Greene, P. G. M. Wuts, Wiley-Interscience, 1999).
  • organic residue defines a carbon containing residue, i.e., a residue comprising at least one carbon atom, and includes but is not limited to the carbon-containing groups, residues, or radicals defined hereinabove.
  • Organic residues can contain various heteroatoms, or be bonded to another molecule through a heteroatom, including oxygen, nitrogen, sulfur, phosphorus, or the like. Examples of organic residues include but are not limited alkyl or substituted alkyls, alkoxy or substituted alkoxy, mono or di-substituted amino, amide groups, etc.
  • Organic residues can preferably comprise 1-26 carbon atoms, 1 to 18 carbon atoms, 1 to 15, carbon atoms, 1 to 12 carbon atoms, 1 to 8 carbon atoms, 1 to 6 carbon atoms, or 1 to 4 carbon atoms.
  • an organic residue can comprise 2- 26 carbon atoms, 2 to 18 carbon atoms, 2 to 15 carbon atoms, 2 to 12 carbon atoms, 2 to 8 carbon atoms, 2 to 6 carbon atoms, or 2 to 4 carbon atoms.
  • radical for example an alkyl
  • substituted alkyl can be further modified (i.e., substituted alkyl) by having bonded thereto one or more "substituent radicals.”
  • the number of atoms in a given radical is not critical to the present invention unless it is indicated to the contrary elsewhere herein.
  • Organic radicals contain one or more carbon atoms.
  • An organic radical can have, for example, 1-26 carbon atoms, 1-18 carbon atoms, 1 to 15, carbon atoms, 1-12 carbon atoms, 1-8 carbon atoms, 1-6 carbon atoms, or 1-4 carbon atoms.
  • an organic radical can have 2-26 carbon atoms, 2-18 carbon atoms, 2 to 15 carbon atoms, 2-12 carbon atoms, 2-8 carbon atoms, 2-6 carbon atoms, or 2-4 carbon atoms.
  • Organic radicals often have hydrogen bound to at least some of the carbon atoms of the organic radical.
  • an organic radical that comprises no inorganic atoms is a 5, 6, 7, 8-tetrahydro-2-naphthyl radical.
  • an organic radical can contain 1-10 inorganic heteroatoms bound thereto or therein, including halogens, oxygen, sulfur, nitrogen, phosphorus, and the like.
  • organic radicals include but are not limited to an alkyl, substituted alkyl, cycloalkyl, substituted cycloalkyl, mono-substituted amino, di-substituted amino, acyloxy, cyano, carboxy, carboalkoxy, alkylcarboxamide, substituted alkylcarboxamide, dialkylcarboxamide, substituted dialkylcarboxamide, alkylsulfonyl, alkylsulfinyl, thioalkyl, thiohaloalkyl, alkoxy, substituted alkoxy, haloalkyl, haloalkoxy, aryl, substituted aryl, heteroaryl, heterocyclic, or substituted heterocyclic radicals, wherein the terms are defined elsewhere herein.
  • organic radicals that include heteroatoms include alkoxy radicals,
  • Inorganic radicals contain no carbon atoms and therefore comprise only atoms other than carbon. Inorganic radicals comprise bonded combinations of atoms selected from hydrogen, nitrogen, oxygen, silicon,
  • Inorganic radicals have 10 or fewer, or preferably one to six or one to four inorganic atoms as listed above bonded together. Examples of inorganic radicals include, but not limited to, amino, hydroxy, halogens, nitro, thiol, sulfate, phosphate, and like commonly known inorganic radicals.
  • the inorganic radicals do not have bonded therein the metallic elements of the periodic table (such as the alkali metals, alkaline earth metals, transition metals, lanthanide metals, or actinide metals), although such metal ions can sometimes serve as a pharmaceutically acceptable cation for anionic inorganic radicals such as a sulfate, phosphate, or like anionic inorganic radical.
  • Inorganic radicals do not comprise metalloids elements such as boron, aluminum, gallium, germanium, arsenic, tin, lead, or tellurium, or the noble gas elements, unless otherwise specifically indicated elsewhere herein.
  • the invention includes all such possible isomers, as well as mixtures of such isomers.
  • a formula with chemical bonds shown only as solid lines and not as wedges or dashed lines contemplates each possible isomer, e.g., each enantiomer and diastereomer, and a mixture of isomers, such as a racemic or scalemic mixture.
  • Compounds described herein can contain one or more asymmetric centers and, thus, potentially give rise to diastereomers and optical isomers.
  • the present invention includes all such possible diastereomers as well as their racemic mixtures, their substantially pure resolved enantiomers, all possible geometric isomers, and
  • a specific stereoisomer can also be referred to as an enantiomer, and a mixture of such isomers is often called an enantiomeric mixture.
  • a 50:50 mixture of enantiomers is referred to as a racemic mixture.
  • Many of the compounds described herein can have one or more chiral centers and therefore can exist in different enantiomeric forms. If desired, a chiral carbon can be designated with an asterisk (*). When bonds to the chiral carbon are depicted as straight lines in the disclosed formulas, it is understood that both the (R) and (S) configurations of the chiral carbon, and hence both enantiomers and mixtures thereof, are embraced within the formula.
  • one of the bonds to the chiral carbon can be depicted as a wedge (bonds to atoms above the plane) and the other can be depicted as a series or wedge of short parallel lines is (bonds to atoms below the plane).
  • the Cahn-Inglod-Prelog system can be used to assign the (R) or (S) configuration to a chiral carbon.
  • Compounds described herein comprise atoms in both their natural isotopic abundance and in non-natural abundance.
  • the disclosed compounds can be isotopically- labelled or isotopically-substituted compounds identical to those described, 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 typically found in nature.
  • isotopes that can be incorporated into compounds of the invention include isotopes of hydrogen, carbon, nitrogen, oxygen, phosphorous, fluorine and chlorine, such as 2 H, 3 H, 13 C, 14 C, 15 N, 18 O, 17 0, 35 S, 18 F and 36 CI, respectively.
  • Compounds further comprise prodrugs thereof, and pharmaceutically acceptable salts of said compounds or of said prodrugs which contain the aforementioned isotopes and/or other isotopes of other atoms are within the scope of this invention.
  • Certain isotopically-labelled compounds of the present invention for example those into which radioactive isotopes such as 3 H and 14 C are incorporated, are useful in drug and/or substrate tissue distribution assays. Tritiated, i.e., H, and carbon- 14, i.e., 14 C, isotopes are particularly preferred for their ease of preparation and detectability.
  • Isotopically labelled compounds of the present invention and prodrugs thereof can generally be prepared by carrying out the procedures below, by substituting a readily available isotopically labelled reagent for a non- isotopically labelled reagent.
  • the compounds described in the invention can be present as a solvate.
  • the solvent used to prepare the solvate is an aqueous solution, and the solvate is then often referred to as a hydrate.
  • the compounds can be present as a hydrate, which can be obtained, for example, by crystallization from a solvent or from aqueous solution.
  • one, two, three or any arbitrary number of solvent or water molecules can combine with the compounds according to the invention to form solvates and hydrates.
  • co-crystal means a physical association of two or more molecules which owe their stability through non-covalent interaction.
  • One or more components of this molecular complex provide a stable framework in the crystalline lattice.
  • the guest molecules are incorporated in the crystalline lattice as anhydrates or solvates, see e.g. "Crystal Engineering of the Composition of Pharmaceutical Phases. Do Pharmaceutical Co-crystals Represent a New Path to Improved Medicines?" Almarasson, O., et. al., The Royal Society of Chemistry, 1889-1896, 2004.
  • Examples of co-crystals include p- toluenesulfonic acid and benzenesulfonic acid.
  • ketones with an a-hydrogen can exist in an equilibrium of the keto form and the enol form.
  • amides with an N-hydrogen can exist in an equilibrium of the amide form and the imidic acid form.
  • pyridinones can exist in two tautomeric forms, as shown below.
  • the invention includes all such possible tautomers.
  • polymorphic forms or modifications It is known that chemical substances form solids which are present in different states of order which are termed polymorphic forms or modifications.
  • the different modifications of a polymorphic substance can differ greatly in their physical properties.
  • the compounds according to the invention can be present in different polymorphic forms, with it being possible for particular modifications to be metastable. Unless stated to the contrary, the invention includes all such possible polymorphic forms.
  • a structure of a compound can be represented by a formula: which is understood to be equivalent to a formula:
  • n is typically an integer. That is, R" is understood to represent five independent substituents, R" (a) , R" (b) , R" (c) , R" (d) , R" (e) .
  • independent substituents it is meant that each R substituent can be independently defined. For example, if in one instance R" (a) is halogen, then R" (b) is not necessarily halogen in that instance.
  • AcOEt ethyl acetate.
  • AcOH acetic acid.
  • ACN acetonitrile.
  • BuOH 1-butanol.
  • DJPEA or DIEA N,N-diisopropylethylamine.
  • DMAP 4-dimethylaminopyridine.
  • DCM dichloromethane.
  • DCE 1,2-dichloroethane.
  • DJPE diisopropylether.
  • DMF N,N-dimethyl formamide.
  • DMSO dimethylsulfoxide.
  • EDC 1- ethyl-3-[3-dimethylaminopropyl]carbodiimide hydrochloride.
  • EtOH ethanol.
  • compositions of the invention Disclosed are the components to be used to prepare the compositions of the invention as well as the compositions themselves to be used within the methods disclosed herein. These and other materials are disclosed herein, and it is understood that when combinations, subsets, interactions, groups, etc. of these materials are disclosed that while specific reference of each various individual and collective combinations and permutation of these compounds can not be explicitly disclosed, each is specifically contemplated and described herein. For example, if a particular compound is disclosed and discussed and a number of modifications that can be made to a number of molecules including the compounds are discussed, specifically contemplated is each and every combination and permutation of the compound and the modifications that are possible unless specifically indicated to the contrary.
  • compositions disclosed herein have certain functions. Disclosed herein are certain structural requirements for performing the disclosed functions, and it is understood that there are a variety of structures that can perform the same function that are related to the disclosed structures, and that these structures will typically achieve the same result.
  • the invention relates to compounds useful as positive allosteric modulators of the metabotropic glutamate receptor subtype 5 (mGluR5). More specifically, in one aspect, the present invention relates to compounds that allosterically modulate mGluR5 receptor activity, affecting the sensitivity of mGluR5 receptors to agonists without acting as orthosteric agonists themselves.
  • the compounds can, in one aspect, exhibit subtype selectivity.
  • the disclosed compounds exhibit positive allosteric modulation of mGluR5 response to glutamate as an increase in response to non-maximal concentrations of glutamate in human embryonic kidney cells transfected with rat mGluR5 in the presence of the compound, compared to the response to glutamate in the absence of the compound.
  • the human embryonic kidney cells are transfected with human mGluR5.
  • human embryonic kidney cells are transfected with mGluR5 of a mammal.
  • the compounds of the invention are useful in the treatment neurological and psychiatric disorders associated with glutamate dysfunction and other diseases in which metabotropic glutamate receptors are involved, as further described herein.
  • each disclosed derivative can be optionally further substituted. It is also contemplated that any one or more derivative can be optionally omitted from the invention. It is understood that a disclosed compound can be provided by the disclosed methods. It is also understood that the disclosed compounds can be employed in the disclosed methods of using.
  • the invention relates to a compound having a structure represented by a formula:
  • Ar is phenyl substituted with 0-3 substituents independently selected from halogen, cyano, C1-C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or Ar 1 is monocyclic heteroaryl substituted with 0-3 substituents independently selected from halogen, cyano, Cl- C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl; wherein when— — is present and A 1 and A 2 are joined by a covalent double bond, A 1 is CR la , and A 2 is CR 2a ; wherein R la is selected from hydrogen, halogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and Cl- C4 polyhaloalkyl; wherein R 2a
  • R lb and R lc are independently selected from hydrogen, fluoro, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or R lb and R lc are covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7-membered spirocycloalkyl; wherein each of R 2b and R 2c are independently selected from hydrogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or R 2b and R 2c are covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7-membered spirocycloalkyl; wherein each of R 2b and R 2c are independently selected from hydrogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or R 2
  • R la and R 2a when present, are optionally covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7-membered fused cycloalkenyl; wherein R lb and R 2b , when present, are optionally covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7-membered fused cycloalkyl; wherein R , when is present, is selected from hydrogen, C1-C6 alkyl;
  • the invention relates to a compound having a structure represented by a formula:
  • Ar is phenyl substituted with 0-3 substituents independently selected from halogen, cyano, C1-C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or Ar 1 is monocyclic heteroaryl substituted with 0-3 substituents independently selected from halo, cyano, C1-C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl; wherein when is present and A 1 and A 2 are joined by a covalent double bond, A 1 is CR la , and A 2 is CR 2a ; wherein R la is selected from hydrogen, halogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and Cl- C4 polyhaloalkyl; wherein R 2a is selected from hydrogen, halogen, C1-C4 alkyl, C1
  • R lb and R lc are independently selected from hydrogen, fluoro, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or R lb and R lc are covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7-membered spirocycloalkyl; wherein each of R 2b and R 2c are independently selected from hydrogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or R 2b and R 2c are covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7-membered spirocycloalkyl; wherein each of R 2b and R 2c are independently selected from hydrogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or R 2
  • R la and R 2a when present, are optionally covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7-membered fused cycloalkenyl; wherein R lb and R 2b , when present, are optionally covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7-membered fused cycloalkyl; wherein R , when is present, is selected from hydrogen, C1-C6 alkyl;
  • R 3 when is not present, is Ar 2 ;
  • R 4 is selected from hydrogen, halogen, cyano, C1-C4 alkyl, C1-C4 monohaloalkyl, C1-C4 polyhaloalkyl, C1-C4 alkylamino, C1-C4 dialkylamino, and C1-C4 alkoxy; wherein each of R 5a and R 5b is independently selected from hydrogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl; or a pharmaceutically acceptable salt, solvate, or polymorph thereof, wherein the compound exhibits potentiation of mGluR5 response to glutamate as an increase in response to non-maximal concentrations of glutamate in human embryonic kidney cells transfected with mGluR5 in the presence of the compound, compared to the response to glutamate in the absence of the compound.
  • the compound has a structure represented by a formula:
  • the compound has a structure represented by a formula:
  • R 7 and R 8 are independently selected from hydrogen and CI -C4 alkyl.
  • the compound has a structure represented by a formula:
  • R 6 is C1-C4 alkyl
  • the compound has a structure represented by a formula:
  • R 9 is selected from C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl.
  • the compound has a structure represented by a formula:
  • the compound has a structure represented by a formula:
  • the compound has a structure represented by a formula:
  • R is selected from C1-C6 alkyl; C1-C6 alkyloxy; C1-C6 monohaloalkyl; C1-C6 polyhaloalkyl; C3-C8 cycloalkyl; C3-C8 heterocycloalkyl; (C3-C8 cycloalkyl)-Cl-C6 alkyl-; and (C3-C8 heterocycloalkyl)-Cl-C6 alkyl-.
  • the compound has a structure represented by a formula:
  • R 7 and R 8 are independently selected from hydrogen and CI -C4 alkyl.
  • the compound has a structure represented by a formula:
  • R 6 is C1-C4 alkyl
  • the compound has a structure represented by a formula:
  • R 9 is selected from C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl.
  • R 9 is selected from halogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl.
  • the compound has a structure represented by a formula:
  • Ar is phenyl or monocyclic heteroaryl; each of which may be unsubstituted or substituted with 1-3 substituents independently selected from halogen, cyano, and C1-C4 alkyl; wherein when— - is present and A 1 and A 2 are joined by a covalent double bond, wherein A 1 is CR la , and A 2 is CR 2a ; wherein R la and R 2a are each selected from hydrogen and halogen; wherein when is not present and A 1 and A2 are joined by a covalent single bond, wherein A 1 is CH 2 , and A2 is CH 2 ; wherein R 3 , when is present, is selected from Ar 2 and (Ar 2 )-Cl-C4 alkyl;
  • Ar is phenyl, which may be unsubstituted or substituted with 1-3 substituents independently selected from halogen, cyano and C1-C4 alkyl; or Ar is monocyclic heteroaryl, which may be unsubstituted or substituted with 1-3 substituents independently selected from halogen, C1-C4 alkyl, C1-C4 alkyoxy, and mono- or di-Cl-C4-alkylamino; wherein R 3 , when is not present, is Ar 2 ; and wherein monocyclic heteroaryl is pyridinyl, pyrimidinyl, pyridazinyl or pyrazinyl.
  • the compound has a structure represented by a formula:
  • Ar 1 is phenyl, which may be unsubstituted or substituted with 1-3 substituents independently selected from halogen, cyano and C1-C4 alkyl; wherein when is present and A 1 and A 2 are joined by a covalent double bond, wherein A 1 is CR la , and A 2 is CR 2a ; wherein R la is selected from hydrogen and halogen and R 2a is hydrogen; wherein when is not present and A 1 and A 2 are joined by a covalent single bond, wherein A 1 is CH 2 , and A2 is CH 2 ; wherein R 3 , when— - is present, is selected from phenyl or benzyl, wherein each of which may be unsubstituted or substituted at the phenyl moiety with 1-3 independently selected halogen substituents; or pyridinyl, which may be unsubstituted or substituted with 1-3 substituents independently selected from
  • the compound has a structure represented by a formula:
  • Ar 1 is phenyl, which may be unsubstituted or substituted with 1-3 independently selected halogen substituents; wherein when is present and A 1 and A 2 are joined by a covalent double bond, wherein A 1 and A2 are each CH; wherein when is not present and A 1 and A2 are joined by a covalent single bond, wherein A 1 and A2 are each CH 2 ; wherein R 3 , when is present, is selected from phenyl or pyridinyl, each of which may be unsubstituted or substituted with 1-3 independently selected halogen substituents; and wherein R , when is not present, is phenyl or pyridinyl, each of which may be unsubstituted or substituted with 1-3 independently selected halogen substituents.
  • the compound has a structure represented by a formula:
  • Ar 1 is phenyl or monocyclic heteroaryl; each of which may be unsubstituted or substituted with 1-3 substituents independently selected from halogen, cyano, and C1-C4 alkyl; wherein R la and R 2a are each selected from hydrogen and halogen; and wherein R 3 is selected from Ar 2 and (Ar 2 )-Cl-C4 alkyl; wherein Ar 2 is phenyl, which may be unsubstituted or substituted with 1-3 substituents independently selected from halogen, cyano and C1-C4 alkyl; or Ar is monocyclic heteroaryl, which may be unsubstituted or substituted with 1-3 substituents independently selected from halogen, C1-C4 alkyl, C1-C4 alkyoxy, and mono- or di-Cl-C4-alkylamino.
  • the compound has a structure represented by a formula:
  • Ar 1 is phenyl, which may be unsubstituted or substituted with 1-3 substituents independently selected from halogen, cyano and C1-C4 alkyl; wherein R la is selected from hydrogen and halogen; and wherein R is selected from phenyl or benzyl, wherein each of which may be unsubstituted or substituted at the phenyl or benzyl moiety with 1-3
  • halogen substituents independently selected halogen substituents; or pyridinyl, which may be unsubstituted or substituted with 1-3 substituents independently selected from halogen, C1-C4 alkyl, C1-C4 alkyoxy, and mono- or di-Cl-C4-alkylamino.
  • the compound has a structure represented by a formula: wherein Ar 1 is phenyl, which may be unsubstituted or substituted with 1-3 independently selected halogen substituents; and wherein R is selected from phenyl or pyridinyl, each of which may be unsubstituted or substituted with 1-3 independently selected halogen substituents.
  • the compound has a structure represented by a formula: wherein Ar 1 is phenyl or monocyclic heteroaryl; each of which may be unsubstituted or substituted with 1-3 substituents independently selected from halogen, cyano, and C1-C4 alkyl; wherein R 3 is Ar 2 ; wherein monocyclic heteroaryl is pyridinyl, pyrimidinyl, pyridazinyl or pyrazinyl; and wherein all other variables are as defined herein.
  • the compound has a structure represented by a formula: wherein Ar 1 is phenyl, which may be unsubstituted or substituted with 1-3 substituents independently selected from halogen, cyano and C1-C4 alkyl; and wherein R is phenyl, which may be unsubstituted or substituted at the phenyl moiety with 1-3 independently selected halogen substituents; or pyridinyl, which may be unsubstituted or substituted with 1- 3 substituents independently selected from halogen, C1-C4 alkyl, C1-C4 alkyoxy, and mono- or di-Cl-C4-alkylamino.
  • the compound has a structure represented by a formula: wherein Ar 1 is phenyl, which may be unsubstituted or substituted with 1-3 independently selected halogen substituents; and wherein R is phenyl or pyridinyl, each of which may be unsubstituted or substituted with 1-3 independently selected halogen substituents.
  • [00173] in a further aspect, is present as a covalent bond, thereby joining A 1 and A 2 with a covalent double bond.
  • a 1 is CR la
  • a 2 is
  • R la is selected from hydrogen, halogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl
  • R 2a is selected from hydrogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl.
  • R 3 is selected from hydrogen, C1-C6 alkyl
  • [00175] is not present, thereby joining A 1 and A 2 with a covalent single bond.
  • a 1 is CR lb R lc
  • a 2 is CR 2b R 2c ; wherein each of R lb and R lc are independently selected from hydrogen, fluoro, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or R lb and R lc are covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7-membered spirocycloalkyl; wherein each of R 2b and R 2c are independently selected from hydrogen, Cl- C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or R 2b and R 2a are covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3-
  • R 3 is Ar 2 ; b.
  • a 1 and A 2 are joined by a covalent double bond, A 1 is CR la and A 2 is CR 2a .
  • the portion of the compound comprising A 1 and A 2" can have a structure represented by a formula:
  • a 1 and A 2 are joined by a covalent bond, A 1 is CR lb R lc , and A 2 is CR 2b R 2c .
  • the portion of the compound comprising A 1 and A 2 can have a structure represented by a formula:
  • Ar 1 is phenyl substituted with 0-3 substituents independently selected from halogen, cyano, C1-C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, and Cl- C4 polyhaloalkyl, or Ar 1 is monocyclic heteroaryl substituted with 0-3 substituents independently selected from halogen, cyano, C1-C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl.
  • Ar 1 is unsubstituted. In a still further aspect, Ar 1 has 1, 2, or 3 substituents. In a yet further aspect, Ar 1 is phenyl. In an even further aspect, Ar 1 is phenyl with 1-3 substituents independently selected from halogen, cyano, C1-C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl.
  • Ar 1 is heteroaryl.
  • Ar 1 is pyridinyl, pyridazinyl, pyrimidinyl, or pyrazinyl.
  • Ar 1 is pyridinyl, pyridazinyl, pyrimidinyl, or pyrazinyl and has 1-3 substituents independently selected from halogen, cyano, C1-C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl.
  • Ar 1 is substituted with 1-3 groups independently selected from halogen, cyano, C1-C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, and C1-C4
  • Ar 1 is substituted with 1-3 groups selected from halogen, cyano, C1-C4 alkyl, and C1-C4 alkyloxy. In an even further aspect, Ar 1 is substituted with 1-3 groups selected from halogen, methyl, trifluoromethyl, ethyl, propyl, and butyl. In a further aspect, Ar 1 is substituted with 1-3 groups selected from methoxy, trifluoromethoxy, ethoxy, propyloxy, or butyloxy. In a still further aspect, Ar 1 is substituted with 1-3 cyano groups. In a yet further aspect, Ar 1 is substituted with 1-3 groups selected from halogen, cyano, methyl, and trifluoromethyl.
  • Ar 1 is substituted with 0-3 halogens. In a still further aspect, Ar 1 is substituted with 1-3 halogens. d. AR 2 GROUPS
  • Ar 2 is phenyl or benzyl or -(C2-C6)-phenyl, and substituted with 0-3 substituents independently selected from halogen, cyano, C1-C4 alkyl, C1-C4 alkyloxy, Cl- C4 monohaloalkyl, C1-C4 polyhaloalkyl,— NH 2 , -NH(C1-C4 alkyl), and -N(C1-C4 alkyl)(Cl-C4 alkyl), or Ar is monocyclic heteroaryl substituted with 0-3 substituents independently selected from halogen, cyano, C1-C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, C1-C4 polyhaloalkyl,— NH 2 , -NH(C1-C4 alkyl), and -N(C1-C4 alkyl)(Cl- C4 alkyl).
  • Ar 2 is unsubstituted. In a still further aspect, Ar 2 has 1, 2, or 3 substituents.
  • Ar 2 is phenyl.
  • Ar 2 is phenyl with 1-3 substituents independently selected from halogen, cyano, C1-C4 alkyl, C1-C4 alkyloxy, CI-
  • Ar is phenyl with 1-3 substituents selected from halogen, cyano, C1-C4 alkyl, C1-C4 alkyloxy, C1-C4
  • C1-C4 polyhaloalkyl — NH 2 , -NH(C1-C4 alkyl), and -N(C1-C4 alkyl)(Cl- C4 alkyl).
  • Ar 2 is benzyl.
  • Ar 2 is benzyl with 1-3 substituents independently selected from halogen, cyano, C1-C4 alkyl, C1-C4 alkyloxy, CI-
  • Ar is benzyl with 1-3 substituents selected from halogen, cyano, C1-C4 alkyl, C1-C4 alkyloxy, C1-C4
  • C1-C4 polyhaloalkyl — NH 2 , -NH(C1-C4 alkyl), and -N(C1-C4 alkyl)(Cl- C4 alkyl).
  • Ar 2 is -(C2-C6)-phenyl.
  • Ar 2 is -(C2- C6)-phenyl with 1-3 substituents independently selected from halogen, cyano, C1-C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl.
  • Ar is -(C2-C6)-phenyl with 1-3 substituents selected from halogen, cyano, C1-C4 alkyl, Cl- C4 alkyloxy, C1-C4 monohaloalkyl, C1-C4 polyhaloalkyl,— NH 2 , -NH(C1-C4 alkyl), and -N(C1-C4 alkyl)(Cl-C4 alkyl).
  • Ar 2 is heteroaryl.
  • Ar 2 is pyridinyl, pyridazinyl, pyrimidinyl, or pyrazinyl.
  • Ar is pyridinyl, pyridazinyl, pyrimidinyl, or pyrazinyl and has 1-3 substituents independently selected from halogen, cyano, C1-C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl.
  • Ar is pyridinyl, pyridazinyl, pyrimidinyl, or pyrazinyl and has 1-3 substituents independently selected from halogen, cyano, C1-C4 alkyl, C1-C4 alkyloxy, Cl- C4 monohaloalkyl, C1-C4 polyhaloalkyl,— NH 2 , -NH(C1-C4 alkyl), and -N(C1-C4 alkyl)(Cl-C4 alkyl).
  • Ar 2 is pyridinyl.
  • Ar 2 is pyridinyl and has 1-3 substituents independently selected from halogen, cyano, C1-C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl.
  • Ar is pyridinyl and has 1-3 substituents independently selected from halogen, cyano, C1-C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, C1-C4 polyhaloalkyl,— NH 2 , -NH(C1-C4 alkyl), and -N(C1-C4 alkyl)(Cl-C4 alkyl).
  • Ar 2 is pyridazinyl.
  • Ar 2 is pyridazinyl and has 1-3 substituents independently selected from halogen, cyano, C1-C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl.
  • Ar is pyridazinyl and has 1-3 substituents independently selected from halogen, cyano, C1-C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, C1-C4 polyhaloalkyl,— NH 2 , -NH(C1-C4 alkyl), and -N(Cl-C4 alkyl)(Cl-C4 alkyl).
  • Ar 2 is pyrimidinyl.
  • Ar 2 is pyrimidinyl and has 1-3 substituents independently selected from halogen, cyano, C1-C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl.
  • Ar is pyrimidinyl and has 1-3 substituents independently selected from halogen, cyano, C1-C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, C1-C4 polyhaloalkyl,— NH 2 , -NH(C1-C4 alkyl), and -N(Cl-C4 alkyl)(Cl-C4 alkyl).
  • Ar 2 is pyrazinyl.
  • Ar 2 is pyrazinyl and has 1-3 substituents independently selected from halogen, cyano, C1-C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl.
  • Ar is pyrazinyl and has 1-3 substituents independently selected from halogen, cyano, C1-C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, C1-C4 polyhaloalkyl,— NH 2 , -NH(C1-C4 alkyl), and -N(C1-C4 alkyl)(Cl-C4 alkyl).
  • Ar 2 is substituted with 1-3 groups independently selected from halogen, cyano, C1-C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl.
  • Ar is substituted with 1-3 groups selected from halogen, cyano, C1-C4 alkyl, and C1-C4 alkyloxy.
  • Ar is substituted with 1-3 groups selected from halogen, methyl, trifluoromethyl, ethyl, propyl, and butyl.
  • Ar is substituted with 1-3 groups selected from methoxy, trifluoromethoxy, ethoxy, propyloxy, or butyloxy. In a still further aspect, Ar is substituted with 1-3 groups selected from methyl, fluoro, trifluoromethyl, methoxy, and— N(CH 3 ) 2 .
  • Ar 2 is substituted with 0-3 halogens.
  • Ar 2 is substituted with 1-3 halogens. In a yet further aspect, Ar 2 is substituted with 0-3 fluoro groups. In an even further aspect, Ar is substituted with 1-3 fluoro groups, e. R lA GROUPS
  • R la is selected from hydrogen, halogen, Cl-
  • R la when present, is hydrogen. In a yet further aspect, R la , when present, is selected from hydrogen and halogen. In an even further aspect, R la , when present, is selected from hydrogen, fluoro, and chloro. In a still further aspect, R la , when present, is selected from hydrogen, fluoro, iodo and chloro. In a still further aspect, R la , when present, is selected from hydrogen, fluoro, and iodo.
  • R la when present, is C1-C4 alkyl. In a still further aspect, R la , when present, is selected from hydrogen, halogen, methyl, trifluoromethyl, ethyl, propyl, and butyl. In a yet further aspect, R la , when present, is selected from hydrogen, fluoro, chloro, methyl, trifluoromethyl, ethyl, propyl, and butyl. In an even further aspect, R la , when present, is selected from hydrogen, fluoro, methyl, trifluoromethyl, ethyl, propyl, and butyl.
  • R la when present, is selected from hydrogen, fluoro, chloro, iodo, methyl, trifluoromethyl, ethyl, propyl, and butyl. In an even further aspect, R la , when present, is selected from hydrogen, fluoro, iodo, methyl, trifluoromethyl, ethyl, propyl, and butyl.
  • R la when present, is selected from hydrogen, methyl, trifluoromethyl, ethyl, propyl, and butyl. In a still further aspect, R la , when present, is selected methyl, trifluoromethyl, ethyl, propyl, and butyl.
  • R la when present, is selected halogen, methyl, trifluoromethyl, ethyl, propyl, and butyl.
  • R la when present, is selected from fluoro, chloro, methyl, trifluoromethyl, ethyl, propyl, and butyl.
  • R la when present, is selected from fluoro, methyl, trifluoromethyl, ethyl, propyl, and butyl.
  • R la when present, is selected from fluoro, chloro, iodo, methyl,
  • R la when present, is selected from fluoro, iodo, methyl, trifluoromethyl, ethyl, propyl, and butyl.
  • R la and R 2a when present, are optionally covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7- membered fused cycloalkyl.
  • R la and R 2a are directly covalently bonded to comprise, together with the intermediate atoms, a 3-, 4-, 5-, 6-, or 7-membered fused cycloalkyl.
  • R la and R 2a are directly covalently bonded to comprise, together with the intermediate atoms, a substituted 3-, 4-, 5-, 6-, or 7-membered fused cycloalkyl.
  • R la and R 2a are directly covalently bonded to comprise, together with the intermediate atoms, a substituted 3-, 4-, 5-, 6-, or 7-membered fused cycloalkyl, and the fused cycloalkyl is substituted with 1 or 2 groups selected from methyl, ethyl, and propyl.
  • R la and R 2a are not directly covalently bonded.
  • R la and R 2a when present, are each hydrogen.
  • R la and R 2a when present, are each methyl.
  • of R la and R 2a when present, are independently selected from each hydrogen, methyl, and trifluoromethyl.
  • each of R lb and R lc are independently selected from hydrogen, fluoro, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4
  • R lb and R lc are covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7-membered spirocycloalkyl.
  • R lb and R lc when present, are each hydrogen.
  • R lb and R lc when present, are each C1-C4 alkyl.
  • each of R lb and R lc when present, are independently selected from hydrogen and C1-C4 alkyl.
  • each of R lb and R lc when present, are independently selected from hydrogen and fluoro.
  • each of R lb and R lc when present, are independently selected from fluoro, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl.
  • each of R lb and R lc when present, are independently selected hydrogen fluoro, methyl, trifluoromethyl, ethyl, propyl, and butyl.
  • R lb and R lc when present, are independently selected from hydrogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl.
  • R lb and R lc when present, are independently selected from hydrogen, methyl, trifluoromethyl, ethyl, propyl, and butyl.
  • R and R when present, are optionally covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7- membered fused cycloalkyl.
  • R lb and R lc are covalently bonded and, together with the intermediate carbon, comprise a 3- to 7-membered spirocycloalkyl.
  • R lb and R lc are covalently bonded and, together with the intermediate carbon, comprise a substituted 3- to 7-membered spirocycloalkyl.
  • R lb and R lc are covalently bonded and, together with the intermediate carbon, comprise a substituted 3- to 7-membered spirocycloalkyl, and the spirocycloalkyl is substituted with 1 or 2 groups selected from methyl, ethyl, and propyl.
  • R 2a is selected from hydrogen, C1-C4 alkyl,
  • R 2a when present, is hydrogen. In a yet further aspect, R 2a , when present, is methyl. In an even further aspect, R 2a , when present, is C1-C4 alkyl. In a further aspect, R 2a , when present, is selected from methyl, trifluoromethyl, ethyl, propyl, and butyl. In a still further aspect, R 2a , when present, is selected from hydrogen and methyl. h. R 2B AND R 2C GROUPS
  • each of R 2b and R 2c are independently selected from hydrogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or R 2b and R 2c are covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7-membered spirocycloalkyl.
  • each of R 2b and R 2c when present, are each hydrogen.
  • each of R 2b and R 2c when present, are each C1-C4 alkyl.
  • each of R 2b and R 2c when present, are independently selected from hydrogen and C1-C4 alkyl.
  • each of R 2b and R 2c when present, are independently selected from hydrogen, methyl, trifluoromethyl, ethyl, propyl, and butyl.
  • each of R 2b and R 2c when present, are independently selected from hydrogen, methyl, and trifluoromethyl.
  • each of R 2b and R 2c when present, are independently selected from hydrogen and methyl.
  • R 2b and R 2c are covalently bonded and, together with the intermediate carbon, comprise a 3- to 7-membered spirocycloalkyl.
  • R 2b and R 2c are covalently bonded and, together with the intermediate carbon, comprise a substituted 3- to 7-membered spirocycloalkyl.
  • R 2b and R 2c are covalently bonded and, together with the intermediate carbon, comprise a substituted 3- to 7- membered spirocycloalkyl, and the spirocycloalkyl is substituted with 1 or 2 groups selected from methyl, ethyl, and propyl.
  • R 3 when is present, is selected from hydrogen, C1-C6 alkyl
  • R 3 when is not present, is Ar 2 .
  • R 3 when is present, is hydrogen.
  • R when is present, is selected from hydrogen and C1-C6 alkyl. In an even further aspect, R , when is present, is selected from methyl, trifluoromethyl, ethyl, propyl, butyl, pentyl, and hexyl.
  • R 3 when is present, is selected from hydrogen, C1-C6 alkyl; C1-C6 alkyloxy; C1-C6 monohaloalkyl; C1-C6 polyhaloalkyl; C3-C8 cycloalkyl; C3- C8 heterocycloalkyl; (C3-C8 cycloalkyl)-Cl-C6 alkyl-; and (C3-C8 heterocycloalkyl)-Cl-
  • R when is present, is selected from hydrogen, methyl, ethyl, propyl, isopropyl, iert-butyl, sec-butyl, isobutyl, neopentyl, isopentyl, sec- pentyl, iert-pentyl, 3,3-dimethylbutan-2-yl, 2,3-dimethylbutan-2-yl, cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, cyclopropylmethyl, cyclobutylmethyl, cyclopentylmethyl, cyclohexylmethyl, -CH 2 F, -CH 2 C1,— CH 2 Br, -CH 2 I, -CH 2 CH 2 F, -CH 2 CH 2 C1,
  • R when is present, is selected from hydrogen, methyl, ethyl, propyl, isopropyl, cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, cyclopropylmethyl, cyclobutylmethyl, cyclopentylmethyl, cyclohexylmethyl,— CH 2 F, -CH2CI,— CH 2 Br, -CH2I, -CF 3 , -CHCI2, -CCI3,— CHBr 2 , -CBr 3 , -CHI 2 , -CI 3 , and — OCH 3 .
  • hydrogen, methyl, cyclopropyl, cyclopropylmethyl — CH 2 F, -CH 2 C1,— CH 2 Br, -CH 2 I, -CF 3 , -CHC1 2 , -CCI3,— CHBr 2 , -CBr 3 , -CHI 2 , -CI 3 , and — OCH 3 .
  • R 3 when is present, is selected from hydrogen, C1-C6 alkyl; C3-C8 cycloalkyl; and (C3-C8 cycloalkyl)-Cl-C6 alk l— .
  • R 3 when is present, is selected from hydrogen, methyl, ethyl, propyl, isopropyl, ie/t-butyl, sec-butyl, isobutyl, neopentyl, isopentyl, sec-pentyl, iert-pentyl, 3,3-dimethylbutan-2-yl, 2,3- dimethylbutan-2-yl, cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, cyclopropylmethyl, cyclobutylmethyl, cyclopentylmethyl, and cyclohexylmethyl.
  • R when is present, is selected from hydrogen, methyl, ethyl, propyl, isopropyl, cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, cyclopropylmethyl, cyclobutylmethyl, cyclopentylmethyl, and cyclohexylmethyl.
  • R when is present, is selected from hydrogen, methyl, cyclopropyl, and cyclopropylmethyl.
  • R when is present, is selected from methyl, cyclopropyl, and cyclopropylmethyl.
  • R when is present, is selected from hydrogen, cyclopropyl, and
  • R when is present, is selected from cyclopropyl and cyclopropylmethyl. In a still further aspect, R , when is present, is cyclopropyl. In a yet further aspect, R , when is present, is cyclopropylmethyl.
  • R 3 when is present, is phenyl. In a still further aspect, R 3 , when is present, is phenyl with 1-3 substituents selected from halogen, cyano, C1-C4 alkyl, C1-C4 alkyloxy, monohalo C1-C4 alkyl, and polyhalo C1-C4 alkyl. In a yet further aspect, R 3 , when is present, is monocyclic heteroaryl. In an even further aspect, R 3 , when is present, is pyridinyl, pyridazinyl, pyrimidinyl, or pyrazinyl. In a further aspect,
  • R when is present, is pyridinyl, pyridazinyl, pyrimidinyl, or pyrazinyl; with 1-3 substituents selected from halogen, cyano, C1-C4 alkyl, C1-C4 alkyloxy, C1-C4
  • R 3 when is not present, is phenyl.
  • R when is not present, is phenyl with 1-3 substituents selected from halogen, cyano,
  • R when is not present, is monocyclic heteroaryl.
  • R when is not present, is pyridinyl, pyridazinyl, pyrimidinyl, or pyrazinyl.
  • R when is not present, is pyridinyl, pyridazinyl, pyrimidinyl, or pyrazinyl; with 1-3 substituents selected from halogen, cyano, C1-C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl.
  • R 3 is phenyl.
  • R 3 is phenyl with 1-3 substituents selected from halogen, cyano, C1-C4 alkyl, C1-C4 alkyloxy, monohalo C1-C4 alkyl, and polyhalo CI -C4 alkyl.
  • R is monocyclic heteroaryl.
  • R is pyridinyl, pyridazinyl, pyrimidinyl, or pyrazinyl.
  • R is pyridinyl, pyridazinyl, pyrimidinyl, or pyrazinyl; with 1-3 substituents selected from halogen, cyano, C1-C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, and C1-C4
  • R 4 is selected from hydrogen, halogen, cyano, C1-C4 alkyl, C1-C4 monohaloalkyl, C1-C4 polyhaloalkyl, C1-C4 alkylamino, C1-C4 dialkylamino, and C1-C4 alkoxy.
  • R 4 is hydrogen.
  • R 4 is selected from hydrogen and C1-C4 alkyl.
  • R 4 is C1-C4 alkoxy.
  • R 4 is selected from halogen, cyano, and C1-C4 alkyl. In a still further aspect, wherein R 4 is selected from C1-C4 alkylamino and C1-C4 dialkylamino. In a yet further aspect, R 4 is selected from C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl.
  • R 4 is selected from hydrogen and halogen. In a yet further aspect, R 4 is selected from hydrogen, fluoro, chloro, and iodo. In a still further aspect, R 4 is selected from hydrogen, fluoro, chloro, and bromo. In an even further aspect, In a yet further aspect, R 4 is selected from hydrogen, bromo, and iodo. k. R 5A AND R 5B GROUPS
  • each of R 5a and R 5b is independently selected from hydrogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl.
  • R 5a and R 5b are both hydrogen.
  • one of R 5a and R 5b is hydrogen and the other is C1-C4 alkyl.
  • R 6 is C1-C4 alkyl. In a further aspect, R 6 is selected from methyl, ethyl, propyl, isopropyl, butyl, isobutyl, sec -butyl, and tert-butyl. In a yet further aspect, R 6 is selected from methyl, ethyl, propyl, and isopropyl. In a still further aspect, R 6 is selected from methyl and ethyl. In an even further aspect, R 6 is methyl. In a still further aspect, R 6 is ethyl. m. R 7 GROUPS
  • R 7 is selected from hydrogen and C1-C4 alkyl.
  • R 7 is hydrogen. In a still further aspect, R 7 is selected from hydrogen, methyl, ethyl, propyl, isopropyl, butyl, isobutyl, sec-butyl, and tert-butyl. In a yet further aspect, R is selected from hydrogen, methyl, ethyl, propyl, and isopropyl. In a still further aspect, R is selected from hydrogen, methyl and ethyl. In an even further aspect, R is hydrogen and methyl. In a still further aspect, R is hydrogen and ethyl.
  • R 7 is selected from methyl, ethyl, propyl, isopropyl, butyl, isobutyl, sec-butyl, and tert-butyl. In a yet further aspect, R is selected from methyl, ethyl, propyl, and isopropyl. In a still further aspect, R is selected from methyl and ethyl. In an even further aspect, R 7 is methyl. In a still further aspect, R 7 is ethyl.
  • each of R 7 and R 8 is hydrogen. In a still further aspect, R 7 is hydrogen and R 8 is methyl. In a yet further aspect, R 7 is hydrogen and R 8 is ethyl. In an even further aspect, R 7 is methyl and R 8 is ethyl, n. R 8 GROUPS
  • R 8 is selected from hydrogen and C1-C4 alkyl.
  • R 8 is hydrogen. In a still further aspect, R 8 is selected from hydrogen, methyl, ethyl, propyl,
  • R is selected from
  • R is selected from
  • R is hydrogen and methyl.
  • R is hydrogen and ethyl.
  • R 8 is selected from methyl, ethyl, propyl, isopropyl, butyl,
  • R isobutyl, sec-butyl, and tert-butyl.
  • R is selected from methyl, ethyl, propyl, and isopropyl.
  • R is selected from methyl and ethyl.
  • R 8 is methyl.
  • R 8 is ethyl. O. R 9 GROUPS
  • R 9 is selected from halogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl. In various further aspects, R 9 is selected from C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl. In a further aspect, R 9 is hydrogen.
  • R 9 is selected from halogen and C1-C4 alkyl. In a still further aspect, R 9 is selected from halogen, methyl, ethyl, propyl, isopropyl, butyl, isobutyl, sec-butyl, and tert-butyl. In a yet further aspect, R 9 is selected from halogen, methyl, ethyl, propyl, and isopropyl. In a still further aspect, R 9 is selected from halogen, methyl and ethyl. In an even further aspect, R 9 is halogen and methyl. In a still further aspect, R 9 is halogen and ethyl.
  • R 9 is selected from methyl, ethyl, propyl, isopropyl, butyl, isobutyl, sec-butyl, and tert-butyl. In a yet further aspect, R 9 is selected from methyl, ethyl, propyl, and isopropyl. In a still further aspect, R 9 is selected from methyl and ethyl. In an even further aspect, R 9 is methyl. In a still further aspect, R 9 is ethyl.
  • R 9 is selected from—CI,—Br, and—I. In a yet further aspect, R 9 is—CI. In a still further aspect, R 9 is—Br. In an even further aspect, R 9 is—I.
  • R 9 is halogen, methyl, ethyl, -CH 2 F, -CH 2 C1,— CH 2 Br, -CH 2 I, -CH 2 CH 2 F, -CH 2 CH 2 C1, -CH 2 CH 2 Br, -CH 2 CH 2 I, -CHF 2 , -CF 3 , -CHC1 2 ,
  • R 9 is halogen, methyl, -CH 2 F, -CH 2 C1,— CH 2 Br, -CH 2 I, -CHF 2 , -CF 3 , -CHC1 2 , -CCI3,— CHBr 2 , -CBr 3 , -CHI 2 , and -CI 3 .
  • halogen is fluoro, chloro, bromo or iodo. In a still further aspect, halogen is fluoro, chloro, or bromo. In a yet further aspect, halogen is fluoro or chloro. In a further aspect, halogen is fluoro. In an even further aspect, halogen is chloro or bromo. In an even further aspect, halogen is chloro. In a yet further aspect, halogen is iodo. In a still further aspect, halogen is bromo. [00234] It is also contemplated that pseudohalogens (e.g. triflate, mesylate, brosylate, etc.) can be used as leaving groups in place of halogens in certain aspects.
  • pseudohalogens e.g. triflate, mesylate, brosylate, etc.
  • a compound can be present as:
  • a compound can be present as:
  • a compound can be present as:
  • a compound can be present as:
  • a compound can be present as:
  • a compound can be present as:
  • a compound can be present as:
  • a compound can be present as:
  • a compound can be present as:
  • the compound produced exhibits positive allosteric modulation of mGluR5 response to glutamate as a inccrease in response to non-maximal concentrations of glutamate in human embryonic kidney cells transfected with rat mGluR5 in the presence of the compound, compared to the response to glutamate in the absence of the compound.
  • human embryonic kidney cells are transfected with human mGluR5.
  • human embryonic kidney cells are transfected with mammalian mGluR5.
  • the compound produced exhibits positive allosteric modulation of mGluR5 after contacting a cell expressing mGluR5.
  • the disclosed compounds are allosteric modulators of mGluR5, in particular, positive allosteric modulators of mGluR5.
  • the diclosed compounds can potentiate glutamate responses by binding to an allosteric site other than the glutamate orthosteric binding site.
  • the response of mGluR5 to a concentration of glutamate is increased when the disclosed compounds are present.
  • the disclosed compounds can have their effect substantially at mGluR5 by virtue of their ability to enhance the function of the receptor.
  • the disclosed compounds exhibit potentiation of mGluR5 response to glutamate as an increase in response to non-maximal concentrations of glutamate in human embryonic kidney cells transfected with mGluR5 in the presence of the compound, compared to the response to glutamate in the absence of the compound.
  • a compound can exhibit positive allosteric modulation of mGluR5 with an EC 50 of less than about 10,000 nM, of less than about 5,000 nM. of less than about 1,000 nM, of less than about 500 nM, or of less than about 100 nM.
  • the mGluR5 is rat mGluR5.
  • the mGluR5 is human mGluR5.
  • the disclosed compounds exhibit potentiation of mGluR5 response to glutamate as an increase in response to non-maximal concentrations of glutamate in human embryonic kidney cells transfected with human mGluR5 in the presence of the compound, compared to the response to glutamate in the absence of the compound.
  • the transfected cell line is the HI OH cell line.
  • the transfected cell line is the H12H cell line.
  • a compound can exhibit positive allosteric modulation of transfected human mGluR5 ith an EC 50 of less than about 10,000 nM, of less than about 5,000 nM. of less than about 1,000 nM, of less than about 500 nM, or of less than about 100 nM.
  • the disclosed compounds exhibit potentiation of mGluR5 response to glutamate as an increase in response to non-maximal concentrations of glutamate in human embryonic kidney cells transfected with rat mGluR5 in the presence of the compound, compared to the response to glutamate in the absence of the compound.
  • a compound can exhibit positive allosteric modulation of transfected rat mGluR5 with an EC 50 of less than about 10,000 nM, of less than about 5,000 nM. of less than about 1,000 nM, of less than about 500 nM, or of less than about 100 nM.
  • HEK Human embryonic kidney
  • FDSS Functional Drug Screening System
  • HEK cells transfected with human mGluR5 were plated for assay in the FDSS.
  • the HEK cells transfected with human mGluR5 were the HI OH cell line.
  • the HEK cells transfected with human mGluR5 were the H12H cell line.
  • Rat assay results were found to correlate well with human assay results.
  • the cells were loaded with a Ca 2+ -sensitive fluorescent dye (e.g., Fluo- 4), and the plates were washed and placed in the FDSS instrument. After establishment of a fluorescence baseline for twelve seconds, the compounds of the present invention were added to the cells, and the response in cells was measured. Five minutes later, an mGluR5 agonist (e.g., glutamate, 3,5-dihydroxyphenylglycine, or quisqualate) was added to the cells, and the response of the cells was measured.
  • a Ca 2+ -sensitive fluorescent dye e.g., Fluo- 4
  • the above described assay operated in two modes.
  • a range of concentrations of the present compounds were added to cells, followed by a single fixed concentration of agonist. If a compound acted as a potentiator, an EC 50 value for potentiation and a maximum extent of potentiation by the compound at this concentration of agonist was determined by non-linear curve fitting.
  • the second mode several fixed concentrations of the present compounds were added to various wells on a plate, followed by a range of concentrations of agonist for each concentration of present compound; the EC 50 values for the agonist at each concentration of compound were determined by non-linear curve fitting.
  • a decrease in the EC 50 value of the agonist with increasing concentrations of the present compounds is an indication of the degree of mGluR5 potentiation at a given concentration of the present compound.
  • An increase in the EC 50 value of the agonist with increasing concentrations of the present compounds is an indication of the degree of mGluR5 antagonism at a given concentration of the present compound.
  • the second mode also indicates whether the present compounds also affect the maximum response to mGluR5 to agonists.
  • the disclosed compounds exhibit potentiation of mGluR5 response to glutamate as an increase in response to non-maximal concentrations of glutamate in human embryonic kidney cells transfected with a mammalian mGluR5 in the presence of the compound, compared to the response to glutamate in the absence of the compound.
  • human embryonic kidney cells can be transfected with human mGluR5.
  • human embryonic kidney cells can be transfected with rat mGluR5.
  • a compound can exhibit positive allosteric modulation of mGluR5 (e.g. , rmGluR5) with an EC 50 of less than about 10,000 nM, of less than about 5,000 nM.
  • the disclosed compounds exhibit potentiation of mGluR5 response to glutamate as an increase in response to non-maximal concentrations of glutamate in human embryonic kidney cells transfected with human mGluR5 in the presence of the compound, compared to the response to glutamate in the absence of the compound.
  • the transfected cell line is the HI OH cell line.
  • the transfected cell line is the H12H cell line.
  • a compound can exhibit positive allosteric modulation of mGluR5 (e.g. , hmGluR5) with an EC 50 of less than about 10,000 nM, of less than about 5,000 nM. of less than about 1,000 nM, of less than about 500 nM, or of less than about 100 nM.
  • the disclosed compounds exhibit activity in potentiating the mGluR5 receptor in the aforementioned assays, generally with an EC 50 for potentiation of less than about 10 ⁇ .
  • Preferred compounds within the present invention had activity in potentiating the mGluR5 receptor with an EC 50 for potentiation of less than about 500 nM.
  • Preferred compounds further caused a leftward shift of the agonist EC 50 by greater than 3-fold.
  • the invention relates to methods of making compounds useful as positive allosteric modulators of the metabotropic glutamate receptor subtype 5 (mGluR5), which can be useful in the treatment neurological and psychiatric disorders associated with glutamate dysfunction and other diseases in which metabotropic glutamate receptors are involved.
  • mGluR5 metabotropic glutamate receptor subtype 5
  • the compounds of this invention can be prepared by employing reactions as shown in the following schemes, in addition to other standard manipulations that are known in the literature, exemplified in the experimental sections or clear to one skilled in the art. For clarity, examples having a single substituent are shown where multiple substituents are allowed under the definitions disclosed herein.
  • the disclosed compounds comprise the products of the synthetic methods described herein.
  • the disclosed compounds comprise a compound produced by a synthetic method described herein.
  • the invention comprises a pharmaceutical composition comprising a therapeutically effective amount of the product of the disclosed methods and a pharmaceutically acceptable carrier.
  • the invention comprises a method for manufacturing a medicament comprising combining at least one compound of any of disclosed compounds or at least one product of the disclosed methods with a pharmaceutically acceptable carrier or diluent.
  • the compound produced exhibits potentiation of mGluR5 response to glutamate as an increase in response to non-maximal concentrations of glutamate in human embryonic kidney cells transfected with mGluR5 in the presence of the compound, compared to the response to glutamate in the absence of the compound.
  • substituted imidazo[l,2-c]pyrimidin-5(6H)-one analogs of the present invention can be prepared generically as shown below.
  • compounds of type 1.2 can be prepared by hydrogenation of the corresponding unsaturated analog as represented by compound 1.1.
  • reaction comprising compound 1.1 and hydrogen gas is performed in the presence of a suitable catalyst, e.g. palladium hydroxide or Raney nickel, and an inert solvent such as methanol, ethanol or a mixture of methanol and N,N-dimethylformamide.
  • a suitable catalyst e.g. palladium hydroxide or Raney nickel
  • an inert solvent such as methanol, ethanol or a mixture of methanol and N,N-dimethylformamide.
  • the reaction is performed at about 30 °C to about 70 °C, with a hydrogen gas pressure of about normal atmospheric pressure to about 50 psi or at about 30 °C to about 100 °C with a continuous flow of hydrogen gas, for a period of time sufficient to complete the reaction.
  • the invention relates to a method of making a compound comprising the steps of: (a) providing a compound having a structure represented by a formula: wherein Ar is phenyl substituted with 0-3 substituents independently selected from halogen, cyano, C1-C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or Ar 1 is monocyclic heteroaryl substituted with 0-3 substituents independently selected from halo, cyano, C1-C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl;
  • R la is selected from hydrogen, halogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and Cl- C4 polyhaloalkyl; wherein R 2a is selected from hydrogen, C1-C4 alkyl, C1-C4
  • R is selected from phenyl substituted with 0-3 substituents independently selected from halogen, cyano, C1-C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or Ar 1 is monocyclic heteroaryl substituted with 0-3 substituents independently selected from halo, cyano, C1-C4 alkyl, Cl- C4 alkyloxy, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl; wherein R 4 is selected from hydrogen, halogen, cyano, and C1-C4 alkyl; wherein each of R 5a and R 5b is independently selected from hydrogen and C1-C4 alkyl; wherein R la and R 2a are optionally covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7
  • hydrogenating comprises reaction with hydrogen in the presence of a palladium catalyst. In a yet further aspect, hydrogenating comprises reaction with hydrogen in the presence of Raney nickel.
  • substituted imidazo[l,2-c]pyrimidin-5(6H)-one analogs of the present invention can be prepared generically by one of the synthetic schemes as shown below.
  • compounds of type 1.1 can be prepared from compounds of type 2.1 by reaction with a suitable, aryl halide or heteroaryl halide, wherein the halo moiety is bromo, chloro or iodo, in the presence of a coupling agent, e.g. copper(I) iodide or palladium ( ⁇ ) acetate, a ligand, e.g. N,N-dimethylethylenediamine or 2-dicyclohexylphosphino-2',4',6'- triiso-propyl-l,l'-biphenyl, and a base, e.g. potassium carbonate or cesium carbonate.
  • a coupling agent e.g. copper(I) iodide or palladium ( ⁇ ) acetate
  • a ligand e.g. N,N-dimethylethylenediamine or 2-dicyclohexylphosphino-2',4',6'- triiso-
  • Reactions of this type are typically carried out in an inert solvent such as toluene or 1,4- dioxane at an appropriate reaction temperature, e.g. from about 100 °C to about 140 °C, for a period of time sufficient to complete the reaction.
  • an inert solvent such as toluene or 1,4- dioxane
  • compounds of type 1.1 can alternatively be prepared from compounds of type 2.3 by reaction with a suitable aryl alcohol in the presence of a suitable base, e.g. potassium carbonate, in an inert solvent such as acetonitrile. Reactions of this type are typically carried out at an appropriate reaction temperature, e.g. from about 60 °C to about 100 °C, for a period of time sufficient to insure completion of the reaction.
  • a suitable base e.g. potassium carbonate
  • an inert solvent such as acetonitrile
  • compounds of type 1.2 can be prepared from compounds of type 2.2 by reaction with a suitable, aryl halide or heteroaryl halide, wherein the halo moiety is bromo, chloro or iodo, in the presence of a coupling agent, e.g. copper(I) iodide or palladium ( ⁇ ) acetate, a ligand, e.g. N,N-dimethylethylenediamine or 2-dicyclohexylphosphino-2',4',6'- triiso-propyl-l,l'-biphenyl, and a base, e.g. potassium carbonate or cesium carbonate.
  • a coupling agent e.g. copper(I) iodide or palladium ( ⁇ ) acetate
  • a ligand e.g. N,N-dimethylethylenediamine or 2-dicyclohexylphosphino-2',4',6'- triiso-
  • Reactions of this type are typically carried out in an inert solvent such as toluene or 1,4- dioxane at an appropriate reaction temperature, e.g. from about 100 °C to about 140 °C, for a period of time sufficient to complete the reaction.
  • an inert solvent such as toluene or 1,4- dioxane
  • compounds of type 1.2 can alternatively be prepared from compounds of type 2.4 by reaction with a suitable aryl alcohol in the presence of a suitable base, e.g. potassium carbonate, in an inert solvent such as acetonitrile. Reactions of this type are typically carried out at an appropriate reaction temperature, e.g. from about 60 °C to about 100 °C, for a period of time sufficient to insure completion of the reaction.
  • a suitable base e.g. potassium carbonate
  • an inert solvent such as acetonitrile
  • Ar is phenyl substituted with 0-3 substituents independently selected from halogen, cyano, C1-C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or Ar 1 is monocyclic heteroaryl substituted with 0-3 substituents independently selected from halo, cyano, C1-C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl; wherein when is present and A 1 and A 2 are joined by a covalent double bond, A 1 is CR la , and A 2 is CR 2a ; wherein R la is selected from hydrogen, halogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and Cl- C4 polyhaloalkyl; wherein R 2a is selected from hydrogen, halogen, C1-C4 alkyl, C1
  • R lb and R lc are independently selected from hydrogen, fluoro, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or R lb and R lc are covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7-membered spirocycloalkyl; wherein each of R 2b and R 2c are independently selected from hydrogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or R 2b and R 2c are covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7-membered spirocycloalkyl; wherein each of R 2b and R 2c are independently selected from hydrogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or R 2
  • R la and R 2a when present, are optionally covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7-membered fused cycloalkenyl; wherein R lb and R 2b , when present, are optionally covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7-membered fused cycloalkyl; wherein R 4 is selected from hydrogen, halogen, cyano, C1-C4 alkyl, C1-C4 monohaloalkyl, C1-C4 polyhaloalkyl, C1-C4 alkylamino, C1-C4 dialkylamino, and C1-C4 alkoxy; wherein each of R 5a and R 5b is independently selected from hydrogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, and (b
  • heterocycloalkyl C1-C6 alkyl—, and aromatic moiety Ar 2 ; wherein Ar 2 is phenyl substituted with 0-3 substituents independently selected from halogen, cyano, C1-C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, C1-C4 polyhaloalkyl,— NH 2 , -NH(C1-C4 alkyl), and — N(C1-C4 alkyl)(Cl-C4 alkyl), or Ar 2 is monocyclic heteroaryl substituted with 0-3 substituents independently selected from halo, cyano, C1-C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, C1-C4 polyhaloalkyl,— NH 2 , -NH(C1-C4 alkyl), and -N(C1-C4 alkyl)(Cl-
  • X is a halogen
  • the prepared compound has a structure represented by a formula:
  • the invention relates to a method of making a compound comprising the steps of: (a) providing a compound having a structure represented by a formula:
  • Ar is phenyl substituted with 0-3 substituents independently selected from halogen, cyano, C1-C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or Ar 1 is monocyclic heteroaryl substituted with 0-3 substituents independently selected from halo, cyano, C1-C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl; wherein when is present and A 1 and A 2 are joined by a covalent double bond, A 1 is CR la , and A 2 is CR 2a ; wherein R la is selected from hydrogen, halogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and Cl- C4 polyhaloalkyl; wherein R 2a is selected from hydrogen, halogen, C1-C4 alkyl, C1
  • R la and R 2a when present, are optionally covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7-membered fused cycloalkenyl; wherein R lb and R 2b , when present, are optionally covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7-membered fused cycloalkyl; wherein R 4 is selected from hydrogen, halogen, cyano, C1-C4 alkyl, C1-C4 monohaloalkyl, C1-C4 polyhaloalkyl, C1-C4 alkylamino, C1-C4 dialkylamino, and C1-C4 alkoxy; wherein each of R 5a and R 5b is independently selected from hydrogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, and (b
  • the prepared compound has a structure represented by a formula:
  • the compound provided has a structure represented by a formula:
  • the compound formed when the above compound is the compound provided has a structure represented by a formula:
  • the method further comprises hydrogenating the compound formed, thereby yielding a compound having a structure represented by a formula:
  • hydrogenating comprises reaction with hydrogen in the presence of a palladium catalyst. In a further aspect, hydrogenating comprises reaction with hydrogen in the presence of Raney nickel.
  • the compound provided has a structure represented by a formula:
  • the compound formed when the above compound is the compound provided has a structure represented by a formula:
  • the invention relates to a method of making a compound comprising the steps of: (a) providing a compound having a structure represented by a formula:
  • X is a leaving group; wherein is an optional covalent bond, wherein valence is satisfied; wherein when is present and A 1 and A 2 are joined by a covalent double bond,
  • a 1 is CR la
  • a 2 is CR 2a ; wherein R la is selected from hydrogen, halogen, C1-C4 alkyl, Cl- C4 monohaloalkyl, and C1-C4 polyhaloalkyl; wherein R 2a is selected from hydrogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl; wherein when is not present and
  • a 1 and A 2 are joined by a covalent single bond, A 1 is CR lb R lc , and A 2 is CR 2b R 2c ; wherein each of R lb and R lc are independently selected from hydrogen, fluoro, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or R lb and R lc are covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7-membered
  • each of R 2b and R 2c are independently selected from hydrogen, Cl- C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or R 2b and R 2c are covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7- membered spirocycloalkyl; wherein R la and R 2a , when present, are optionally covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7- membered fused cycloalkenyl; wherein R lb and R 2b , when present, are optionally covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7- membered fused cycloalkyl; wherein R , when is present, is selected from hydrogen, Cl-
  • R 3 when is not present, is Ar 2 ;
  • R 4 is selected from hydrogen, halogen, cyano, C1-C4 alkyl, C1-C4 monohaloalkyl, C1-C4 polyhaloalkyl, C1-C4 alkylamino, C1-C4 dialkylamino, and C1-C4 alkoxy; wherein each of R 5a and R 5b is independently selected from hydrogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, and (b) reacting the compound with A ⁇ OH, wherein Ar 1 is phenyl substituted with 0-3 substituents independently selected from halogen, cyano, C1-C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or Ar 1 is monocyclic heteroaryl substituted
  • the leaving group is a halogen.
  • the halogen is chloro.
  • the reaction is performed in the presence of base.
  • the compound provided has a structure represented by the formula:
  • the compound formed when the above compound is the compound provided has a structure represented by a formula:
  • the method further comprises hydrogenating the compound formed, thereby yielding a compound having a structure represented by a formula:
  • hydrogenating comprises reaction with hydrogen in the presence of a palladium catalyst. In a further aspect, hydrogenating comprises reaction with hydrogen in the presence of Raney nickel.
  • the compound provided has a structure represented by the formula:
  • the compound formed when the above compound is the compound provided has a structure represented by a formula:
  • substituted imidazo[l,2-c]pyrimidin-5(6H)-one analogs of the present invention can be prepared generically as shown below.
  • compounds of type 1.1 can be prepared starting with 4- aminopyrimidin-2(lH)-one analogs shown as compound type 3.1.
  • Compound type 3.1 is reacted with a suitable alkylating compound with an appropriate leaving group, such as R Br (although leaving groups other than bromo can also be utilized).
  • the reaction is carried out in the presence of a suitable base, e.g. ieira-N-butylammonium hydroxide, in an inert solvent such as N,N-dimethylformamide at a suitable temperature, e.g. from about 0 °C to about 40 °C, for a period of time sufficient to complete the reaction.
  • a suitable base e.g. ieira-N-butylammonium hydroxide
  • an inert solvent such as N,N-dimethylformamide
  • reaction compound 3.2 is then reacted with a suitable dihaloketone, e.g. 1,2-dichloroacetone, in the presence of an inert solvent, e.g. N,N-dimethylformamide, to afford a compound of type 2.3.
  • a suitable dihaloketone e.g. 1,2-dichloroacetone
  • an inert solvent e.g. N,N-dimethylformamide
  • Conversion of the product, compound 2.3, to a compound of type 1.1 is accomplished by methods described above for Route II. Briefly, the compound is reacted with a suitable aryl alcohol in the presence of a suitable base, e.g. potassium carbonate, in an inert solvent such as acetonitrile. Reactions of this type are typically carried out at an appropriate reaction temperature, e.g. from about 60 °C to about 100 °C, for a period of time sufficient to insure completion of the reaction.
  • compounds of type 1.3 can be prepared starting with 4- aminopyrimidin-2(lH)-one analogs shown as compound type 3.1.
  • Compound type 3.1 is reacted with an appropriate aryl (including heteroaryl) boronic derivative represented by the formula Ar B(OH) 2 in the presence of a suitable coupling agent, e.g. copper(II) acetate monohydrate and a suitable ligand, e.g. ⁇ , ⁇ , ⁇ ', ⁇ -tetramethylethylenediamine.
  • a suitable coupling agent e.g. copper(II) acetate monohydrate
  • a suitable ligand e.g. ⁇ , ⁇ , ⁇ ', ⁇ -tetramethylethylenediamine.
  • the reaction is carried out in an inert solvent such as toluene at a suitable temperature, e.g. from about 0 °C to about 40 °C for a period of time sufficient to insure completion of the reaction.
  • reactions of this type are typically carried out at an appropriate reaction temperature, e.g. from about 60 °C to about 100 °C, for a period of time sufficient to insure completion of the reaction.
  • the invention relates to a method of making a compound comprising the steps of: (a) providing a compound having a structure represented by a formula:
  • R la is selected from hydrogen, halogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and Cl- C4 polyhaloalkyl; wherein R 2a is selected from hydrogen, C1-C4 alkyl, C1-C4
  • R is selected from hydrogen, C1-C6 alkyl; C1-C6 alkyloxy; C1-C6 monohaloalkyl; C1-C6 polyhaloalkyl; C3-C8 cycloalkyl; C3- C8 heterocycloalkyl; (C3-C8 cycloalkyl)-Cl-C6 alkyl-; (C3-C8 heterocycloalkyl)-Cl-C6 alkyl—, and aromatic moiety Ar 2 ; wherein Ar 2 is phenyl or benzyl or -(C2-C6)-phenyl, and substituted with 0-3 substituents independently selected from halogen, cyano, C1-C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, C1-C4 polyhaloalkyl,— NH 2 , -NH(C1-C1-
  • R 4 is selected from hydrogen, halogen, cyano, and C1-C4 alkyl; and wherein each of R 5a and R 5b is independently selected from hydrogen and C1-C4 alkyl.
  • reacting is carried out using microwave irradiation.
  • R 4 is hydrogen or C1-C4 alkyl. In a further aspect, R 4 is hydrogen. In a still further aspect, R 4 is hydrogen, methyl, ethyl, propyl or isopropyl. In a yet further aspect, R 4 is hydrogen or methyl.
  • the prepared compound has a structure represented by a formula:
  • the method further comprises the step of reacting the compound formed with A ⁇ OH, wherein Ar 1 is phenyl substituted with 0-3 substituents independently selected from halogen, cyano, C1-C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or Ar 1 is monocyclic heteroaryl substituted with 0- 3 substituents independently selected from halo, cyano, C1-C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, thereby forming a compound represented by a formula:
  • reacting the compound formed with Ar OH is performed in the presence of base.
  • the method further comprises hydrogenating the compound formed following reaction with A ⁇ OH, thereby yielding a compound having a structure represented by a formula:
  • substituted imidazo[l,2-c]pyrimidin-5(6H)-one analogs of the present invention can be prepared generically as shown below.
  • compounds of type 1.1 and 1.2 can be prepared starting with a suitable 6-chloro-2-(methylthio)pyrimidin-4-amine analog, such as compound type 4.1, and reacting with a suitable dihaloketone, e.g. 1,2-dichloroacetone.
  • a suitable inert solvent e.g. N,N-dimethylformamide
  • a convenient reaction temperature e.g. from about 20 °C to about 70 °C
  • Suitable 6- chloro-2-(methylthio)pyrimidin-4-amine analogs can be purchased commercially.
  • the product can be reacted with a suitable aryl alcohol to afford compounds of type 4.3 using procedures described above for Route II. Briefly, the reaction can be performed in the presence of a suitable base, e.g. potassium carbonate, in an inert solvent such as acetonitrile. Reactions of this type are typically carried out at an appropriate reaction temperature, e.g. from about 20 °C to about 100 °C, for a period of time sufficient to insure completion of the reaction. The product of this reaction can be converted to a compound of type 4.4 by hydrolysis in the presence of lithium hydroxide.
  • a suitable base e.g. potassium carbonate
  • an inert solvent such as acetonitrile
  • reaction is carried out in an appropriate inert solvent, e.g. tetrahydrofuran and water, at a convenient and suitable temperature, e.g from about 30 °C to about 70 °C, for a period of time to insure completion of the reaction.
  • a compound of type 2.1 is prepared from the product by a hydrogenation reaction in the presence of hydrogen gas and a suitable catalyst, e.g. palladium hydroxide.
  • the reaction is carried out in an inert solvent, e.g. methanol, at a convenient and suitable temperature, e.g. from about 30 °C to about 80 °C, under a suitable hydrogen pressure, e.g.
  • the invention relates to a method of making a compound comprising the steps of: (a) providing a compound having a structure represented by a formula:
  • R la is selected from hydrogen, halogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and Cl- C4 polyhaloalkyl, and (b) reacting the compound with a compound represented by a formula: wherein R 4 is selected from hydrogen, halogen, cyano, and C1-C4 alkyl; and wherein each of R 5a and R 5b is independently selected from selected from hydrogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl.
  • the prepared compound has a structure represented by a formula:
  • the method further comprises the step of reacting the compound formed with A ⁇ OH, wherein Ar 1 is phenyl substituted with 0-3 substituents independently selected from halogen, cyano, C1-C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or Ar 1 is monocyclic heteroaryl substituted with 0- 3 substituents independently selected from halo, cyano, C1-C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, thereby forming a compound represented by a formula:
  • the reaction is performed in the presence of base.
  • the method further comprises the step of hydrolysis on the compound formed from reaction with A ⁇ OH, wherein hydrolysis is performed in the presence of lithium hydroxide, thereby forming a compound represented by a formula:
  • the invention relates to a method of making a compound comprising the steps of: (a) providing a compound having a structure represented by a formula:
  • Ar 1 is phenyl substituted with 0-3 substituents independently selected from halogen, cyano, C1-C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or Ar 1 is monocyclic heteroaryl substituted with 0-3 substituents independently selected from halo, cyano, C1-C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl;
  • R la is selected from hydrogen, halogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and Cl- C4 polyhaloalkyl; wherein R 4 is selected from hydrogen, halogen, cyano, C1-C4 alkyl, C1-C4 monohaloalkyl, C1-C4 polyhaloalkyl, C1-C4 alkylamino, C1-C4 dialkylamino, and C1-C4 alkoxy; wherein each of R 5a and R 5b is independently selected from hydrogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, (b) hydrogenating the compound to yield a compound represented by the formula:
  • hydrogenation is carried out with hydrogen in the presence of a palladium catalyst.
  • the palladium catalyst is palladium hydroxide.
  • the method further comprises the step of coupling the compound formed with R X,in the presence of a coupling reagent, wherein X is bromo or iodo; wherein R , is selected from hydrogen, C1-C6 alkyl; C1-C6 alkyloxy; C1-C6 monohaloalkyl; C1-C6 polyhaloalkyl; C3-C8 cycloalkyl; C3-C8 heterocycloalkyl; (C3-C8 cycloalkyl)— C1-C6 alkyl—; (C3-C8 heterocycloalkyl)— CI -C6 alkyl—, and aromatic moiety
  • Ar 2 wherein Ar 2 is phenyl or benzyl or -(C2-C6)-phenyl, and substituted with 0-3
  • the coupling reagent is copper(I) iodide.
  • the amide formed has a structure represented by a formula:
  • the method further comprises the step of reacting the compound formed with R 3 X, wherein X is a leaving group; wherein R 3 , is selected from hydrogen, C1-C6 alkyl; C1-C6 alkyloxy; C1-C6 monohaloalkyl; C1-C6 polyhaloalkyl; C3-C8 cycloalkyl; C3-C8 heterocycloalkyl; (C3-C8 cycloalkyl)-Cl-C6 alkyl-; (C3-C8 heterocycloalkyl)— C1-C6 alkyl—, and aromatic moiety Ar 2 ; wherein Ar 2 is phenyl or benzyl or -(C2-C6)-phenyl, and substituted with 0-3 substituents independently selected from halogen, cyano, C1-C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, C1-
  • substituted imidazo[l,2-c]pyrimidin-5(6H)-one analogs of the present invention can be prepared generically as shown below.
  • NXS is /V-halosuccinimide, e.g. /V-chlorosuccinimide,
  • compounds of type 5.1 can be prepared from the analogous compound of type 1.1 by reaction with an appropriate N-halosuccinimide, e.g. N- chlorosuccinimide, in an inert solvent, e.g. N,N-dimethylformamide.
  • an appropriate N-halosuccinimide e.g. N- chlorosuccinimide
  • an inert solvent e.g. N,N-dimethylformamide
  • compounds of type 5.1 can alternatively be prepared starting with a compound of type 2.3.
  • the reaction for the first step is carried out by reacting compound 2.3 with a suitable N-halosuccinimide, e.g. N-bromosuccinimide, in the presence of benzoyl peroxide in an appropriate inert solvent, e.g. 1,2-dichloroethane.
  • the reaction is carried out at an appropriate temperature, e.g. from about room temperature to about 60 °C, for a period of time to insure completion of the reaction to afford compound type 5.2.
  • the conversion of compound type 5.2 to compound type 5.1 is carried out using reaction conditions as described above for Route ⁇ .
  • the halogenated compound type 5.1 can be converted to a number of derivatives, including the corresponding alkoxy (compound type 5.3), alkylamine (compound type 5.4), and alkyl (compound type 5.5).
  • the typical reaction conditions for preparing each derivative are illustrated in the reaction schemes above.
  • compounds of type 5.6 can be prepared from the analogous compound of type 1.2 by reaction with an appropriate N-halosuccinimide, e.g. N- chlorosuccinimide, N-iodosuccinimide or N-bromosuccinimide, in an inert solvent, e.g. N,N- dimethylformamide, mixture of acetonitrile and acetic acid or in the presence of benzoyl peroxide in 1,2-dichloroethane.
  • the reaction is carried out at an appropriate temperature, e.g. at room temperature or by heating with microwave irradiation, for a period of time sufficient to insure completion of the reaction.
  • the halogenated compound type 5.6 can be converted to a number of derivatives, including the corresponding alkoxy (compound type 5.7), alkylamine (compound type 5.8), and alkyl (compound type 5.9).
  • the typical reaction conditions for preparing each derivative are illustrated in the reaction schemes above.
  • the invention relates to a method of making a compound comprising the steps of: (a) providing a compound having a structure represented by a formula:
  • a 1 is CR la
  • a 2 is CR 2a
  • R la is selected from hydrogen, halogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl
  • R 2a is selected from hydrogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl; wherein when is not present and
  • a 1 and A 2 are joined by a covalent single bond, A 1 is CR lb R lc , and A 2 is CR 2b R 2c ; wherein each of R lb and R lc are independently selected from hydrogen, fluoro, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or R lb and R lc are covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7-membered
  • each of R 2b and R 2c are independently selected from hydrogen, Cl- C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or R 2b and R 2c are covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7- membered spirocycloalkyl; wherein R la and R 2a , when present, are optionally covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7- membered fused cycloalkenyl; wherein R lb and R 2b , when present, are optionally covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7- membered fused cycloalkyl; wherein R is selected from hydrogen, C1-C6 alkyl; C1-C6 alkyloxy; C1-C6 monohaloalkyl;
  • the halogenated compound formed has a structure represented by a formula:
  • the method further comprises the step of reacting the halogenated compound formed with A ⁇ OH, wherein Ar 1 is phenyl substituted with 0-3 substituents independently selected from halogen, cyano, C1-C4 alkyl, C1-C4 alkyloxy, Cl- C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or Ar 1 is monocyclic heteroaryl substituted with 0-3 substituents independently selected from halo, cyano, C1-C4 alkyl, C1-C4 alkyloxy, Cl- C4 monohaloalkyl, and C1-C4 polyhaloalkyl, thereby forming a compound represented by a formula:
  • the invention relates to a method of making a compound comprising the steps of: (a) providing a compound having a structure represented by a formula:
  • Ar 1 is phenyl substituted with 0-3 substituents independently selected from halogen, cyano, C1-C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or Ar 1 is monocyclic heteroaryl substituted with 0-3 substituents independently selected from halo, cyano, C1-C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl;
  • a 1 is CR la
  • a 2 is CR 2a
  • R la is selected from hydrogen, halogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl
  • R 2a is selected from hydrogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl; wherein when is not present and
  • a 1 and A 2 are joined by a covalent single bond, A 1 is CR lb R lc , and A 2 is CR 2b R 2c ; wherein each of R lb and R lc are independently selected from hydrogen, fluoro, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or R lb and R lc are covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7-membered
  • each of R 2b and R 2c are independently selected from hydrogen, Cl- C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or R 2b and R 2c are covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7- membered spirocycloalkyl; wherein R la and R 2a , when present, are optionally covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7- membered fused cycloalkenyl; wherein R lb and R 2b , when present, are optionally covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7- membered fused cycloalkyl; wherein R is selected from hydrogen, C1-C6 alkyl; C1-C6 alkyloxy; C1-C6 monohaloalkyl;
  • the halogenated compound has a structure represented by a formula:
  • the invention relates to a method of making a compound comprising the steps of: (a) providing a compound having a structure represented by a formula:
  • X is halogen; wherein Ar 1 is phenyl substituted with 0-3 substituents independently selected from halogen, cyano, C1-C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl and Cl- C4 polyhaloalkyl, or Ar 1 is monocyclic heteroaryl substituted with 0-3 substituents independently selected from halo, cyano, C1-C4 alkyl, C1-C4 alkyloxy, C1-C4
  • a 1 is CR la
  • a 2 is CR 2a
  • R la is selected from hydrogen, halogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl
  • R a is selected from hydrogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl; wherein when is not present and A 1 and A2 are joined by a covalent single bond, A 1 is
  • R lb and R lc are independently selected from hydrogen, fhioro, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or R lb and R lc are covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7-membered spirocycloalkyl; wherein each of R 2b and R 2c are independently selected from hydrogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or R 2b and R 2c are covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7-membered spirocycloalkyl; wherein R la and R 2a , when present, are optionally covalently bonded and, together
  • heterocycloalkyl C1-C6 alkyl—, and aromatic moiety Ar 2 ; wherein Ar 2 is phenyl or benzyl or -(C2-C6)-phenyl, and substituted with 0-3 substituents independently selected from halogen, cyano, C1-C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, C1-C4 polyhaloalkyl, — NH 2 , -NH(C1-C4 alkyl), and -N(C1-C4 alkyl)(Cl-C4 alkyl), or Ar 2 is monocyclic heteroaryl substituted with 0-3 substituents independently selected from halo, cyano, C1-C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, C1-C4 polyhaloalkyl,— NH 2 , -NH(C1-C4 alkyl), and 0
  • the metal catalyst comprises palladium, copper, or both.
  • the metal catalyst is copper(I) iodide.
  • X is chloro or bromo.
  • X is halogen; wherein Ar 1 is phenyl substituted with 0-3 substituents independently selected from halogen, cyano, C1-C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, and Cl- C4 polyhaloalkyl, or Ar 1 is monocyclic heteroaryl substituted with 0-3 substituents independently selected from halo, cyano, C1-C4 alkyl, C1-C4 alkyloxy, C1-C4
  • a 1 is CR la
  • a 2 is CR 2a
  • R la is selected from hydrogen, halogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl
  • R 2a is selected from hydrogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl; wherein when is not present and A 1 and A2 are joined by a covalent single bond, A 1 is
  • R lb and R lc are independently selected from hydrogen, fluoro, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or R lb and R lc are covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7-membered spirocycloalkyl; wherein each of R 2b and R 2c are independently selected from hydrogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or R 2b and R 2c are covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7-membered spirocycloalkyl; wherein R la and R 2a , when present, are optionally covalently bonded and, together with the intermediate
  • heterocycloalkyl C1-C6 alkyl—, and aromatic moiety Ar 2 ; wherein Ar 2 is phenyl or benzyl or -(C2-C6)-phenyl, and substituted with 0-3 substituents independently selected from halogen, cyano, C1-C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, C1-C4 polyhaloalkyl, — NH 2 , -NH(C1-C4 alkyl), and -N(C1-C4 alkyl)(Cl-C4 alkyl), or Ar 2 is monocyclic heteroaryl substituted with 0-3 substituents independently selected from halo, cyano, C1-C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, C1-C4 polyhaloalkyl,— NH 2 , -NH(C1-C4 alkyl), and 0
  • X is chloro or bromo.
  • the metal catalyst comprises a palladium compound.
  • the metal catalyst comprises a palladium compound which is tris(dibenzylideneacetone) dipalladium(O).
  • the metal catalyst comprises a palladium compound which is
  • the invention relates to a method of making a compound comprising the steps of: (a) providing a compound having a structure represented by a formula:
  • X is halogen; wherein Ar 1 is phenyl substituted with 0-3 substituents independently selected from halogen, cyano, C1-C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, and Cl- C4 polyhaloalkyl, or Ar 1 is monocyclic heteroaryl substituted with 0-3 substituents independently selected from halo, cyano, C1-C4 alkyl, C1-C4 alkyloxy, C1-C4
  • a 1 is CR la
  • a 2 is CR 2a
  • R la is selected from hydrogen, halogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl
  • R a is selected from hydrogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl; wherein when is not present and A 1 and A2 are joined by a covalent single bond, A 1 is
  • R lb and R lc are independently selected from hydrogen, fhioro, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or R lb and R lc are covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7-membered spirocycloalkyl; wherein each of R 2b and R 2c are independently selected from hydrogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or R 2b and R 2c are covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7-membered spirocycloalkyl; wherein R la and R 2a , when present, are optionally covalently bonded and, together
  • heterocycloalkyl C1-C6 alkyl—, and aromatic moiety Ar 2 ; wherein Ar 2 is phenyl or benzyl or -(C2-C6)-phenyl, and substituted with 0-3 substituents independently selected from halogen, cyano, C1-C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, C1-C4 polyhaloalkyl, — NH 2 , -NH(C1-C4 alkyl), and -N(C1-C4 alkyl)(Cl-C4 alkyl), or Ar 2 is monocyclic heteroaryl substituted with 0-3 substituents independently selected from halo, cyano, C1-C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, C1-C4 polyhaloalkyl,— NH 2 , -NH(C1-C4 alkyl), and 0
  • X is bromo or chloro.
  • the metal catalyst comprises a palladium or copper compound.
  • the metal catalyst comprises tris(dibenzylideneacetone) dipalladium(O).
  • the metal catalyst comprises tetrakis(triphenylphosphine)palladium(0).
  • the copper compound is present as copper(I) iodide.
  • substituted imidazo[l,2-c]pyrimidin-5(6H)-one analogs of the present invention can be prepared generically as shown below.
  • compounds of type 6.6 can be prepared starting with 4- aminopyrimidin-2(lH)-one analogs shown as compound type 6.1.
  • Compound of type 6.1 is reacted with a suitable alkylating compound with an appropriate leaving group, such as R Br (although leaving groups other than bromo can also be utilized).
  • the reaction is carried out in the presence of a suitable base, e.g. ieira-N-butylammonium hydroxide, in an inert solvent such as N,N-dimethylformamide at a suitable temperature, e.g. from about 0 °C to about 40 °C, for a period of time sufficient to complete the reaction.
  • a suitable base e.g. ieira-N-butylammonium hydroxide
  • an inert solvent such as N,N-dimethylformamide
  • the product of this reaction is then reacted with sodium metaperiodate in the presence of iodine in an appropriate mixture of inert solvents, e.g. acetic acid, water and sulfuric acid, at a convenient reaction temperature, e.g. from about 60 °C to about 100 °C, for a period of time sufficient to complete the reaction.
  • the compound of type 6.3 is then reacted with a suitable dihaloketone, e.g. 1,2- dichloroacetone, in the presence of an inert solvent, e.g. N,N-dimethylformamide, to afford a compound of type 6.4.
  • This reaction can be carried out by heating with microwave irradiation for a period of time sufficient to insure completion.
  • Conversion of the product, compound 6.4, to a compound of type 6.5 is accomplished by methods described above for Route II. Briefly, the compound is reacted with a suitable aryl alcohol in the presence of a suitable base, e.g. potassium carbonate, in an inert solvent such as acetonitrile. Reactions of this type are typically carried out at an appropriate reaction temperature, e.g. from about 60 °C to about 100 °C, for a period of time sufficient to insure completion of the reaction. The compound of type 6.5 is then reacted with methylboronic acid in the presence of an appropriate coupling agent, e.g.
  • an appropriate coupling agent e.g.
  • reactions of this type are typically carried out in a suitable mixture of inert solvents, e.g. 1,4- dioxane and N,N-dimethylformamide. This reaction can be carried out by heating with microwave irradiation for a period of time sufficient to insure completion.
  • compounds of type 6.11 can be prepared starting with 4- aminopyrimidin-2(lH)-one analogs shown as compound type 6.1.
  • Compound type 6.1 is reacted with an appropriate aryl (including heteroaryl) boronic derivative represented by the formula Ar B(OH) 2 in the presence of a suitable coupling agent, e.g. copper(II) acetate monohydrate and a suitable ligand, e.g. ⁇ , ⁇ , ⁇ ', ⁇ -tetramethylethylenediamine.
  • a suitable coupling agent e.g. copper(II) acetate monohydrate
  • a suitable ligand e.g. ⁇ , ⁇ , ⁇ ', ⁇ -tetramethylethylenediamine.
  • the reaction is carried out in an inert solvent such as toluene at a suitable temperature, e.g. from about 0 °C to about 40 °C for a period of time sufficient to insure completion of the reaction.
  • This reaction can be carried out by heating with microwave irradiation for a period of time sufficient to insure completion.
  • Conversion of the product, compound 6.9, to a compound of type 6.10 is accomplished by methods described above for Route II. Briefly, the compound is reacted with a suitable aryl alcohol in the presence of a suitable base, e.g. potassium carbonate, in an inert solvent such as acetonitrile. Reactions of this type are typically carried out at an appropriate reaction temperature, e.g. from about 60 °C to about 100 °C, for a period of time sufficient to insure completion of the reaction. The compound of type 6.10 is then reacted with methylboronic acid in the presence of an appropriate coupling agent, e.g.,
  • reactions of this type are typically carried out in a suitable mixture of inert solvents, e.g. 1,4-dioxane and N,N-dimethylformamide. This reaction can be carried out by heating with microwave irradiation for a period of time sufficient to insure completion.
  • the compound produced exhibits positive allosteric modulation of mGluR5 response to glutamate as an increase in response to non-maximal concentrations of glutamate in human embryonic kidney cells transfected with rat mGluR5 in the presence of the compound, compared to the response to glutamate in the absence of the compound.
  • human embryonic kidney cells are transfected with human mGluR5.
  • human embryonic kidney cells are transfected with mammalian mGluR5.
  • the compound produced exhibits positive allosteric modulation of mGluR5 (e.g. , rmGluR5) with an EC 50 of less than about 10,000 nM, of less than about 5,000 nM. of less than about 1,000 nM, of less than about 500 nM, or of less than about 100 nM.
  • the compound produced exhibits potentiation of mGluR5 response to glutamate as an increase in response to non-maximal concentrations of glutamate in human embryonic kidney cells transfected with human mGluR5 in the presence of the compound, compared to the response to glutamate in the absence of the compound.
  • the transfected cell line is the HI OH cell line. In a still further aspect, the transfected cell line is the H12H cell line. In a yet further aspect, the compound produced exhibits positive allosteric modulation of mGluR5 (e.g. , hmGluR5) with an EC 50 of less than about 10,000 nM, of less than about 5,000 nM. of less than about 1,000 nM, of less than about 500 nM, or of less than about 100 nM.
  • mGluR5 e.g. , hmGluR5
  • the compound produced exhibits activity in potentiating the mGluR5 receptor in the disclosed assays, generally with an EC 50 for potentiation of less than about 10 ⁇ .
  • Preferred compounds within the present invention had activity in potentiating the mGluR5 receptor with an EC 50 for potentiation of less than about 500 nM.
  • Preferred compounds further caused a leftward shift of the agonist EC 50 by greater than 3-fold. These compounds did not cause mGluR5 to respond in the absence of agonist, and they did not elicit a significant increase in the maximal response of mGluR5 to agonists.
  • These compounds are selective positive allosteric modulators (potentiators) of human and rat mGluR5 compared to the other seven subtypes of metabotropic glutamate receptors.
  • each disclosed methods can further comprise additional steps, manipulations, and/or components. It is also contemplated that any one or more step, manipulation, and/or component can be optionally omitted from the invention. It is understood that a disclosed methods can be used to provide the disclosed compounds. It is also understood that the products of the disclosed methods can be employed in the disclosed methods of using.
  • Table I lists specific compounds, preferred synthetic route(s), and characterization data.
  • Table II lists specific compounds with experimentally determined mGluR5 activity determined in a cell-based assay. The mGluR5 activity was determined using the metabotropic glutamate receptor activity assays in human embryonic kidney cells as described herein, wherein the human embryonic kidney cells were transfected with human mGluR5. The compounds in Table I were synthesized with methods identical or analogous to those shown herein.
  • the Synthetic Route Reference indicated in Table I refers to the Reaction Scheme number described above. The requisite starting materials were commercially available, described in the literature, or readily synthesized by one skilled in the art of organic synthesis.
  • the invention relates to pharmaceutical compositions comprising the disclosed compounds. That is, a pharmaceutical composition can be provided comprising a therapeutically effective amount of at least one disclosed compound or at least one product of a disclosed method and a pharmaceutically acceptable carrier.
  • the disclosed pharmaceutical compositions comprise the disclosed compounds (including pharmaceutically acceptable salt(s) thereof) as an active ingredient, a pharmaceutically acceptable carrier, and, optionally, other therapeutic ingredients or adjuvants.
  • the instant compositions include those suitable for oral, rectal, topical, and parenteral (including subcutaneous, intramuscular, and intravenous)
  • compositions can be conveniently presented in unit dosage form and prepared by any of the methods well known in the art of pharmacy.
  • salts refers to salts prepared from pharmaceutically acceptable non-toxic bases or acids.
  • the compound of the present invention is acidic, its corresponding salt can be conveniently prepared from pharmaceutically acceptable non-toxic bases, including inorganic bases and organic bases.
  • Salts derived from such inorganic bases include aluminum, ammonium, calcium, copper (-ic and -ous), ferric, ferrous, lithium, magnesium, manganese (-ic and -ous), potassium, sodium, zinc and the like salts. Particularly preferred are the ammonium, calcium, magnesium, potassium and sodium salts.
  • Salts derived from pharmaceutically acceptable organic nontoxic bases include salts of primary, secondary, and tertiary amines, as well as cyclic amines and substituted amines such as naturally occurring and synthesized substituted amines.
  • Other pharmaceutically acceptable organic non-toxic bases from which salts can be formed include ion exchange resins such as, for example, arginine, betaine, caffeine, choline, N,N - dibenzylethylenediamine, diethylamine, 2-diethylaminoethanol, 2-dimethylaminoethanol, ethanolamine, ethylenediamine, N-ethylmorpholine, N-ethylpiperidine, glucamine, glucosamine, histidine, hydrabamine, isopropylamine, lysine, methylglucamine, morpholine, piperazine, piperidine, polyamine resins, procaine, purines, theobromine, triethylamine, trimethylamine, triprop
  • the term "pharmaceutically acceptable non-toxic acids” includes inorganic acids, organic acids, and salts prepared therefrom, for example, acetic,
  • benzenesulfonic benzoic, camphorsulfonic, citric, ethanesulfonic, fumaric, gluconic, glutamic, hydrobromic, hydrochloric, isethionic, lactic, maleic, malic, mandelic,
  • the compounds of the invention, or pharmaceutically acceptable salts thereof, of this invention can be combined as the active ingredient in intimate admixture with a pharmaceutical carrier according to conventional pharmaceutical compounding techniques.
  • the carrier can take a wide variety of forms depending on the form of preparation desired for administration, e.g. , oral or parenteral (including intravenous).
  • compositions of the present invention can be presented as discrete units suitable for oral administration such as capsules, cachets or tablets each containing a predetermined amount of the active ingredient. Further, the compositions can be presented as a powder, as granules, as a solution, as a suspension in an aqueous liquid, as a non-aqueous liquid, as an oil-in- water emulsion or as a water-in-oil liquid emulsion.
  • the compounds of the invention, and/or pharmaceutically acceptable salt(s) thereof can also be administered by controlled release means and/or delivery devices.
  • the compositions can be prepared by any of the methods of pharmacy.
  • such methods include a step of bringing into association the active ingredient with the carrier that constitutes one or more necessary ingredients.
  • the compositions are prepared by uniformly and intimately admixing the active ingredient with liquid carriers or finely divided solid carriers or both. The product can then be conveniently shaped into the desired presentation.
  • compositions of this invention can include a
  • compositions in combination with one or more other therapeutically active compounds.
  • the pharmaceutical carrier employed can be, for example, a solid, liquid, or gas.
  • solid carriers include lactose, terra alba, sucrose, talc, gelatin, agar, pectin, acacia, magnesium stearate, and stearic acid.
  • liquid carriers are sugar syrup, peanut oil, olive oil, and water.
  • gaseous carriers include carbon dioxide and nitrogen.
  • compositions for oral dosage form any convenient means for preparing the compositions for oral dosage form.
  • oral liquid preparations such as suspensions, elixirs and solutions
  • carriers such as starches, sugars, microcrystalline cellulose, diluents, granulating agents, lubricants, binders, disintegrating agents, and the like
  • oral solid preparations such as powders, capsules and tablets.
  • tablets and capsules are the preferred oral dosage units whereby solid pharmaceutical carriers are employed.
  • tablets can be coated by standard aqueous or nonaqueous techniques
  • a tablet containing the composition of this invention can be prepared by compression or molding, optionally with one or more accessory ingredients or adjuvants.
  • Compressed tablets can be prepared by compressing, in a suitable machine, the active ingredient in a free-flowing form such as powder or granules, optionally mixed with a binder, lubricant, inert diluent, surface active or dispersing agent.
  • Molded tablets can be made by molding in a suitable machine, a mixture of the powdered compound moistened with an inert liquid diluent.
  • compositions of the present invention comprise a compound of the invention (or pharmaceutically acceptable salts thereof) as an active ingredient, a pharmaceutically acceptable carrier, and optionally one or more additional therapeutic agents or adjuvants.
  • the instant compositions include compositions suitable for oral, rectal, topical, and parenteral (including subcutaneous, intramuscular, and intravenous) administration, although the most suitable route in any given case will depend on the particular host, and nature and severity of the conditions for which the active ingredient is being administered.
  • the pharmaceutical compositions can be conveniently presented in unit dosage form and prepared by any of the methods well known in the art of pharmacy.
  • compositions of the present invention suitable for parenteral administration can be prepared as solutions or suspensions of the active compounds in water.
  • a suitable surfactant can be included such as, for example, hydroxypropylcellulose.
  • Dispersions can also be prepared in glycerol, liquid polyethylene glycols, and mixtures thereof in oils. Further, a preservative can be included to prevent the detrimental growth of microorganisms.
  • compositions of the present invention suitable for injectable use include sterile aqueous solutions or dispersions.
  • the compositions can be in the form of sterile powders for the extemporaneous preparation of such sterile injectable solutions or dispersions.
  • the final injectable form must be sterile and must be effectively fluid for easy syringability.
  • the pharmaceutical compositions must be stable under the conditions of manufacture and storage; thus, preferably should be preserved against the contaminating action of microorganisms such as bacteria and fungi.
  • the carrier can be a solvent or dispersion medium containing, for example, water, ethanol, polyol (e.g., glycerol, propylene glycol and liquid polyethylene glycol), vegetable oils, and suitable mixtures thereof.
  • compositions of the present invention can be in a form suitable for topical use such as, for example, an aerosol, cream, ointment, lotion, dusting powder, mouth washes, gargles, and the like. Further, the compositions can be in a form suitable for use in transdermal devices. These formulations can be prepared, utilizing a compound of the invention, or pharmaceutically acceptable salts thereof, via conventional processing methods. As an example, a cream or ointment is prepared by mixing hydrophilic material and water, together with about 5 wt to about 10 wt of the compound, to produce a cream or ointment having a desired consistency.
  • compositions of this invention can be in a form suitable for rectal administration wherein the carrier is a solid. It is preferable that the mixture forms unit dose suppositories. Suitable carriers include cocoa butter and other materials commonly used in the art. The suppositories can be conveniently formed by first admixing the composition with the softened or melted carrier(s) followed by chilling and shaping in moulds.
  • the pharmaceutical formulations described above can include, as appropriate, one or more additional carrier ingredients such as diluents, buffers, flavoring agents, binders, surface-active agents, thickeners, lubricants, preservatives (including anti-oxidants) and the like.
  • additional carrier ingredients such as diluents, buffers, flavoring agents, binders, surface-active agents, thickeners, lubricants, preservatives (including anti-oxidants) and the like.
  • additional carrier ingredients such as diluents, buffers, flavoring agents, binders, surface-active agents, thickeners, lubricants, preservatives (including anti-oxidants) and the like.
  • additional carrier ingredients such as diluents, buffers, flavoring agents, binders, surface-active agents, thickeners, lubricants, preservatives (including anti-oxidants) and the like.
  • other adjuvants can be included to render the formulation isotonic with the blood of the intended recipient
  • an appropriate dosage level will generally be about 0.01 to 500 mg per kg patient body weight per day and can be administered in single or multiple doses.
  • the dosage level will be about 0.1 to about 250 mg/kg per day; more preferably 0.5 to 100 mg/kg per day.
  • a suitable dosage level can be about 0.01 to 250 mg/kg per day, about 0.05 to 100 mg/kg per day, or about 0.1 to 50 mg/kg per day. Within this range the dosage can be 0.05 to 0.5, 0.5 to 5.0 or 5.0 to 50 mg/kg per day.
  • compositions are preferably provided in the from of tablets containing 1.0 to 1000 miligrams of the active ingredient, particularly 1.0, 5.0, 10, 15, 20, 25, 50, 75, 100, 150, 200, 250, 300, 400, 500, 600, 750, 800, 900 and 1000 milligrams of the active ingredient for the symptomatic adjustment of the dosage of the patient to be treated.
  • the compound can be administered on a regimen of 1 to 4 times per day, preferably once or twice per day. This dosing regimen can be adjusted to provide the optimal therapeutic response.
  • the specific dose level for any particular patient will depend upon a variety of factors. Such factors include the age, body weight, general health, sex, and diet of the patient. Other factors include the time and route of administration, rate of excretion, drug combination, and the type and severity of the particular disease undergoing therapy.
  • the present invention is further directed to a method for the manufacture of a medicament for modulating glutamate receptor activity (e.g., treatment of one or more neurological and/or psychiatric disorder associated with glutamate dysfunction) in mammals (e.g., humans) comprising combining one or more disclosed compounds, products, or compositions with a pharmaceutically acceptable carrier or diluent.
  • a method for manufacturing a medicament comprising combining at least one disclosed compound or at least one disclosed product with a pharmaceutically acceptable carrier or diluent.
  • compositions can further comprise other ingredients
  • therapeutically active compounds which are usually applied in the treatment of the above mentioned pathological conditions.
  • compositions can be prepared from the disclosed compounds. It is also understood that the disclosed compositions can be employed in the disclosed methods of using.
  • amino acid L-glutamate (referred to herein simply as glutamate) is the principal excitatory neurotransmitter in the mammalian central nervous system (CNS).
  • glutamate plays a key role in synaptic plasticity (e.g. , long term potentiation (the basis of learning and memory)), motor control and sensory perception.
  • synaptic plasticity e.g. , long term potentiation (the basis of learning and memory)
  • motor control and sensory perception e.g. , motor control and sensory perception.
  • Glutamate acts through two distinct receptors: ionotropic and metabotropic glutamate receptors.
  • the first class, the ionotropic glutamate receptors is comprised of multi-subunit ligand-gated ion channels that mediate excitatory post-synaptic currents.
  • ionotropic glutamate receptors Three subtypes of ionotropic glutamate receptors have been identified, and despite glutamate serving as agonist for all three receptor subtypes, selective ligands have been discovered that activate each subtype.
  • the ionotropic glutamate receptors are named after their respective selective ligands: kainite receptors, AMPA receptors and NMDA receptors.
  • the second class of glutamate receptor termed metabotropic glutamate receptors, (mGluRs)
  • GPCRs G-protein coupled receptors
  • the mGluRs are family C GPCR, characterized by a large (-560 amino acid) "venus fly trap" agonist binding domain in the amino-terminal domain of the receptor. This unique agonist binding domain distinguishes family C GPCRs from family A and B GPCRs wherein the agonist binding domains are located within the 7-strand transmembrane spanning (7TM) region or within the extracellular loops that connect the strands to this region.
  • mGluRs eight distinct mGluRs have been identified, cloned and sequenced. Based on structural similarity, primary coupling to intracellular signaling pathways and pharmacology, the mGluRs have been assigned to three groups: Group I (mGluRl and mGluR5), Group ⁇ (mGluR2 and mGluR3) and Group ⁇ (mGluR4, mGluR6, mGluR7 and mGluR8).
  • Group I mGluRs are coupled through Gccq/11 to increase inositol phosphate and metabolism and resultant increases in intracellular calcium.
  • Group I mGluRs are primarily located post-synaptically and have a modualtory effect on ion channel activity and neuronal excitability.
  • Group ⁇ (mGluR2 and mGluR3) and Group ⁇ (mGluR4, mGluR6, mGluR7 and mGluR8) mGluRs are primarily located pre-synaptically where they regulate the release of neurotransmitters, such as glutamate.
  • Group ⁇ and Group ⁇ mGluRs are coupled to Gcti and its associated effectors such as adenylate cyclase.
  • Post-synaptic mGluRs are known to functionally interact with post-synaptic ionotropic glutamate receptors, such as the NMDA receptor.
  • post-synaptic ionotropic glutamate receptors such as the NMDA receptor.
  • activation of mGluR5 by a selective agonist has been shown to increase post-synaptic NMDA currents (Mannaioni et.al. J. Neurosci. 21:5925-5934 (2001)). Therefore, modulation of mGluRs is an approach to modulating glutamatergic transmission.
  • Numerous reports indicate that mGluR5 plays a role in a number of disease states including anxiety (Spooren et. al. J.
  • Phencyclidine (PCP) and other NMDA receptor antagonists induce a psychotic state in humans similar to schizophrenia.
  • PCP and ketamine exacerbate/precipitate preexisting positive and negative symptoms in stable patients.
  • NMDA receptor co-agonists can improve positive and negative symptoms.
  • a schematic of the NMDA receptor is shown in Figure 1.
  • Activation of mGluR5 potentiates NMDA receptor function as shown in Figure 2.
  • Orthosteric ligands lack subtype selectivity and can cause unwanted side effects.
  • Allosteric modulators see Figure 3) that can target transmembrane domains offer a pharmacologically attractive alternative.
  • transmembrane domains can be significantly less conserved than extracellular loop regions.
  • the compounds disclosed herein are allosteric modulators of metabotropic glutamate receptors, in particular they are positive allosteric modulators of mGluR5.
  • the The compounds disclosed herein are allosteric modulators of metabotropic glutamate receptors, in particular they are positive allosteric modulators of mGluR5.
  • the compounds disclosed herein do not appear to bind to the glutamate recognition site, the orthosteric ligand site, but instead to an allosteric site.
  • the compounds of this invention increase the mGluR5 response.
  • the compounds disclosed herein are expected to have their effect at mGluR5 by virtue of their ability to increase the response of such receptors to glutamate or mGluR5 agonists, enhancing the response of the receptor.
  • the present invention relates compounds disclosed herein for use as a medicament, as well as to the use of a compound disclosed herein or a pharmaceutical composition according to the invention for the manufacture of a medicament, including, for example, the manufacture of a medicament for treating or preventing, in particular treating, a condition in a mammal, including a human, the treatment or prevention of which is affected or facilitated by the neuromodulatory effect of allosteric modulators of mGluR5, e.g. positive allosteric modulators thereof.
  • the present invention also relates to a compound disclosed herein or a pharmaceutical composition according to the invention for use in the treatment or prevention of a condition in a subject such as a mammal, including a human, the treatment or prevention of which is affected or facilitated by the neuromodulatory effect of allosteric modulators of mGluR5, e.g. positive allosteric modulators thereof.
  • the compounds disclosed herein are useful for treating, preventing, ameliorating, controlling or reducing the risk of a variety of neurological and psychiatric disorders associated with glutamate dysfunction.
  • the compounds disclosed herein are useful for treating, preventing, ameliorating, controlling or reducing the risk of a variety of neurological and psychiatric disorders associated with glutamate dysfunction, in a subject such as a mammal, including a human, the treatment or prevention of which is affected or facilitated by the neuromodulatory effect of allosteric modulators of mGluR5, e.g. particular positive allosteric modulators thereof.
  • the present invention also relates to the use of a compound disclosed herein or a pharmaceutical composition according to the invention for the manufacture of a medicament for treating, preventing, ameliorating, controlling or reducing the risk of various neurological and psychiatric disorders associated with glutamate dysfunction in a subject such as a mammal, including a human, the treatment or prevention of which is affected or facilitated by the neuromodulatory effect of allosteric modulators of mGluR5, e.g. positive allosteric modulators thereof.
  • disorders associated with glutamate dysfunction include: autism, acute and chronic neurological and psychiatric disorders such as cerebral deficits subsequent to cardiac bypass surgery and grafting, stroke, cerebral ischemia, spinal cord trauma, head trauma, perinatal hypoxia, cardiac arrest, hypoglycemic neuronal damage, dementia
  • AIDS-induced dementia including AIDS-induced dementia
  • Alzheimer's disease Huntington's Chorea, amyotrophic lateral sclerosis, ocular damage, retinopathy, cognitive disorders, idiopathic and drug-induced Parkinson's disease, muscular spasms and disorders associated with muscular spasticity including tremors, epilepsy, convulsions, migraine (including migraine headache), urinary incontinence, substance tolerance, addictive behavior, including addiction to substances (including opiates, nicotine, tobacco products, alcohol, benzodiazepines, cocaine, sedatives, hypnotics, etc.), withdrawal from such addictive substances (including substances such as opiates, nicotine, tobacco products, alcohol, benzodiazepines, cocaine, sedatives, hypnotics, etc.), obesity, psychosis, schizophrenia, anxiety (including generalized anxiety disorder, panic disorder, and obsessive compulsive disorder), mood disorders (including depression, mania, bipolar disorders), trigeminal neuralgia, hearing loss, tinnit
  • Epilepsy can be treated or prevented by the compositions disclosed herein, including absence epilepsy.
  • the compositisions disclosed herein can have a protective role for spike and wave discharges associated with absence seizures.
  • mGlu Metabotropic glutamate receptors positioned at synapses of the cortico-thalamo- cortical circuitry that generates spike-and-wave discharges (SWDs) associated with absence seizures.
  • SWDs spike-and-wave discharges
  • mGluR receptors are therapeutic targets for the treatment of absence epilepsy (e.g. see Epilepsia, 52(7): 1211-1222, 2011 ; Neuropharmacology 60 (2011) 1281el291 ; and abstract from 7th International conference on metabotropic glutamate receptors, Oct 2-6, 2011 Taormina, Italy,
  • Anxiety disorders that can be treated or prevented by the compositions disclosed herein include generalized anxiety disorder, panic disorder, and obsessive compulsive disorder.
  • Addictive behaviors include addiction to substances (including opiates, nicotine, tobacco products, alcohol, benzodiazepines, cocaine, sedatives, hypnotics, etc.), withdrawal from such addictive substances (including substances such as opiates, nicotine, tobacco products, alcohol, benzodiazepines, cocaine, sedatives, hypnotics, etc.) and substance tolerance.
  • the disorder is dementia, delirium, amnestic disorders, age-related cognitive decline, schizophrenia, including positive and negative symptoms thereof and cognitive dysfunction related to schizophrenia, psychosis including schizophrenia, schizophreniform disorder, schizoaffective disorder, delusional disorder, brief psychotic disorder, substance-related disorder, movement disorders, epilepsy, chorea, pain, migraine, diabetes, dystonia, obesity, eating disorders, brain edema, sleep disorder, narcolepsy, anxiety, affective disorder, panic attacks, unipolar depression, bipolar disorder, and psychotic depression.
  • psychosis including schizophrenia, schizophreniform disorder, schizoaffective disorder, delusional disorder, brief psychotic disorder, substance-related disorder, movement disorders, epilepsy, chorea, pain, migraine, diabetes, dystonia, obesity, eating disorders, brain edema, sleep disorder, narcolepsy, anxiety, affective disorder, panic attacks, unipolar depression, bipolar disorder, and psychotic depression.
  • a method for treating or preventing schizophrenia comprising: administering to a subject at least one disclosed compound; at least one disclosed
  • anxiety and related disorders include: panic disorder with or without agoraphobia, agoraphobia without history of panic disorder, specific phobia, social phobia, obsessive-compulsive disorder, posttraumatic stress disorder, acute stress disorder, generalized anxiety disorder, anxiety disorder due to a general medical condition, substance-induced anxiety disorder and anxiety disorder not otherwise specified.
  • the condition or disease is a central nervous system disorder selected from the group of anxiety disorders, psychotic disorders, personality disorders, substance-related disorders, eating disorders, mood disorders, migraine, epilepsy or convulsive disorders, childhood disorders, cognitive disorders, neurodegeneration, neurotoxicity and ischemia.
  • the central nervous system disorder is an anxiety disorder, selected from the group of agoraphobia, generalized anxiety disorder (GAD),
  • OCD obsessive-compulsive disorder
  • PTSD posttraumatic stress disorder
  • social phobia other phobias.
  • the central nervous system disorder is a psychotic disorder selected from the group of schizophrenia, delusional disorder, schizoaffective disorder, schizophreniform disorder and substance-induced psychotic disorder
  • the central nervous system disorder is a personality disorder selected from the group of obsessive-compulsive personality disorder and schizoid, schizotypal disorder.
  • the central nervous system disorder is a substance-related disorder selected from the group of alcohol abuse, alcohol dependence, alcohol withdrawal, alcohol withdrawal delirium, alcohol-induced psychotic disorder, amphetamine dependence, amphetamine withdrawal, cocaine dependence, cocaine withdrawal, nicotine dependence, nicotine withdrawal, opioid dependence and opioid withdrawal.
  • the central nervous system disorder is an eating disorder selected from the group of anorexia nervosa and bulimia nervosa.
  • the central nervous system disorder is a mood disorder selected from the group of bipolar disorders (I & II), cyclothymic disorder, depression, dysthymic disorder, major depressive disorder and substance-induced mood disorder.
  • the central nervous system disorder is migraine.
  • the central nervous system disorder is epilepsy or a convulsive disorder selected from the group of generalized nonconvulsive epilepsy, generalized convulsive epilepsy, petit mal status epilepticus, grand mal status epilepticus, partial epilepsy with or without impairment of consciousness, infantile spasms, epilepsy partialis continua, and other forms of epilepsy.
  • the central nervous system disorder is
  • the central nervous system disorder is a cognitive disorder selected from the group of delirium, substance-induced persisting delirium, dementia, dementia due to HIV disease, dementia due to Huntington's disease, dementia due to
  • Parkinson's disease dementia of the Alzheimer's type, substance-induced persisting dementia and mild cognitive impairment.
  • DSM-rV Diagnostic & Statistical Manual of Mental Disorders
  • the invention also relates to a disclosed compound, or a
  • pharmaceutically acceptable salt including pharmaceutically acceptable acid or base addition salts, hydrate, solvate, polymorphy, or stereoisomeric form thereof, for use in the treatment of any one of the diseases mentioned hereinbefore.
  • the invention also relates to a disclosed compound, or a pharmaceutically acceptable salt, including pharmaceutically acceptable acid or base addition salts, hydrate, solvate, polymorphy, or stereoisomeric form thereof, for the treatment or prevention, in particular treatment, of any one of the diseases mentioned hereinbefore.
  • the invention relates to relates to a disclosed compound, or a pharmaceutically acceptable salt, including pharmaceutically acceptable acid or base addition salts, hydrate, solvate, polymorphy, or stereoisomeric form thereof, for the manufacture of a medicament for the treatment or prevention of any one of the disease conditions mentioned hereinbefore.
  • the invention also relates to the use of relates to a disclosed compound, or a pharmaceutically acceptable salt, including pharmaceutically acceptable acid or base addition salts, hydrate, solvate, polymorphy, or stereoisomeric form thereof, for the manufacture of a medicament for the treatment of any one of the disease conditions mentioned hereinbefore.
  • the invention relates to a disclosed compound, or a
  • pharmaceutically acceptable salt including pharmaceutically acceptable acid or base addition salts, hydrate, solvate, polymorphy, or stereoisomeric form thereof, administered to mammals, e.g. humans, for the treatment or prevention of any one of the diseases mentioned hereinbefore.
  • a further aspect relates to a method of treating warm-blooded animals, such as mammals including humans, suffering from any one of the diseases mentioned hereinbefore, and a method of preventing in warm-blooded animals, such as mammals including humans, any one of the diseases mentioned hereinbefore by administering a disclosed compound, or a pharmaceutically acceptable salt, including pharmaceutically acceptable acid or base addition salts, hydrate, solvate, polymorphy, or stereoisomeric form thereof.
  • Said methods comprise the administration, i.e.
  • systemic or topical administration preferably oral administration, of a therapeutically effective amount of a disclosed compound, or a pharmaceutically acceptable salt, including pharmaceutically acceptable acid or base addition salts, hydrate, solvate, polymorphy, or stereoisomeric form thereof, to warm-blooded animals, such as mammals including humans.
  • the invention also relates to a method for the prevention and/or treatment of any one of the diseases mentioned hereinbefore comprising administering a therapeutically effective amount of a disclosed compound, or a pharmaceutically acceptable salt, including pharmaceutically acceptable acid or base addition salts, hydrate, solvate, polymorphy, or stereoisomeric form thereof, to a patient in need thereof.
  • a disclosed compound is a positive allosteric modulators of mGluR5, and can enhance the response of mGluR5 to glutamate, thus it is an advantage that the present methods utilize endogenous glutamate.
  • positive allosteric modulators of mGluR5, such as the disclosed compounds enhance the response of mGluR5 to agonists, it is understood that the present invention extends to the treatment of neurological and psychiatric disorders associated with glutamate dysfunction by administering an effective amount of a disclosed compound, or a pharmaceutically acceptable salt, including
  • the compounds of the present invention may be utilized in combination with one or more other drugs in the treatment, prevention, control, amelioration, or reduction of risk of diseases or conditions for which a disclosed compound, or a pharmaceutically acceptable salt, including pharmaceutically acceptable acid or base addition salts, hydrate, solvate, polymorphy, or stereoisomeric form thereof, or the other drugs may have utility, where the combination of the drugs together are safer or more effective than either drug alone.
  • the disclosed compounds can be used as single agents or in combination with one or more other drugs in the treatment, prevention, control, amelioration or reduction of risk of the aforementioned diseases, disorders and conditions for which compounds of formula I or the other drugs have utility, where the combination of drugs together are safer or more effective than either drug alone.
  • the other drug(s) can be administered by a route and in an amount commonly used therefore, contemporaneously or sequentially with a disclosed compound.
  • a pharmaceutical composition in unit dosage form containing such drugs and the disclosed compound is preferred.
  • the combination therapy can also be
  • the subject compounds can be coadministered with anti- Alzheimer's agents, beta-secretase inhibitors, gamma-secretase inhibitors, muscarinic agonists, muscarinic potentiatorsHMG-CoA reductase inhibitors, NSAIDs and anti-amyloid antibodies.
  • the subject compounds can be administered in combination with sedatives, hypnotics, anxiolytics, antipsychotics, selective serotonin reuptake inhibitors (SSRIs), monoamine oxidase inhibitors (MAOIs), 5-HT2 antagonists, GlyTl inhibitors and the like such as, but not limited to: risperidone, clozapine, haloperidol, fluoxetine, prazepam, xanomeline, lithium, phenobarbitol, and salts thereof and combinations thereof.
  • SSRIs selective serotonin reuptake inhibitors
  • MAOIs monoamine oxidase inhibitors
  • 5-HT2 antagonists GlyTl inhibitors and the like
  • GlyTl inhibitors and the like such as, but not limited to: risperidone, clozapine, haloperidol, fluoxetine, prazepam, xanomeline, lithium, phenobarbitol, and salts thereof and
  • the subject compound can be used in combination with levodopa (with or without a selective extracerebral decarboxylase inhibitor), anticholinergics such as biperiden, COMT inhibitors such as entacapone, A2a adenosine antagonists, cholinergic agonists, NMD A receptor antagonists and dopamine agonists.
  • anticholinergics such as biperiden
  • COMT inhibitors such as entacapone, A2a adenosine antagonists, cholinergic agonists, NMD A receptor antagonists and dopamine agonists.
  • compositions and methods of the present invention can further comprise other therapeutically active compounds as noted herein which are usually applied in the treatment of the above mentioned pathological conditions.
  • the invention relates to a method for the treatment of a disorder associated with mGluR5 activity in a mammal comprising the step of administering to the mammal at least one disclosed compound or at least one disclosed product in a dosage and amount effective to treat the disorder in the mammal.
  • the mammal is a human.
  • the mammal has been diagnosed with a need for treatment of the disorder prior to the administering step.
  • the method further comprises the step of identifying a mammal in need of treatment of the disorder.
  • the invention relates to a method for the treatment of a neurological and/or psychiatric disorder associated with glutamate dysfunction in a mammal comprising the step of administering to the mammal a therapeutically effective amount of at least one compound having a structure represented by a formula:
  • Ar is phenyl substituted with 0-3 substituents independently selected from halogen, cyano, C1-C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or Ar 1 is monocyclic heteroaryl substituted with 0-3 substituents independently selected from halo, cyano, C1-C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl; wherein when is present and A 1 and A 2 are joined by a covalent double bond, A 1 is CR la , and A 2 is CR 2a ; wherein R la is selected from hydrogen, halogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and Cl- C4 polyhaloalkyl; wherein R 2a is selected from hydrogen, halogen, C1-C4 alkyl, C1
  • R lb and R lc are independently selected from hydrogen, fluoro, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or R lb and R lc are covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7-membered spirocycloalkyl; wherein each of R 2b and R 2c are independently selected from hydrogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or R and R c are covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7-membered spirocycloalkyl; wherein each of R 2b and R 2c are independently selected from hydrogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or R and R
  • R la and R 2a when present, are optionally covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7-membered fused cycloalkenyl; wherein R lb and R 2b , when present, are optionally covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7-membered fused cycloalkyl; wherein R , when is present, is selected from hydrogen, C1-C6 alkyl;
  • R 3 when is not present, is Ar 2 ;
  • R 4 is selected from hydrogen, halogen, cyano, C1-C4 alkyl, C1-C4 monohaloalkyl, C1-C4 polyhaloalkyl, C1-C4 alkylamino, C1-C4 dialkylamino, and C1-C4 alkoxy; wherein each of R 5a and R 5b is independently selected from hydrogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl; or a pharmaceutically acceptable salt, solvate, or polymorph thereof.
  • the compound administered is a disclosed compound or a product of a disclosed method of making a compound.
  • the compound exhibits positive allosteric modulation of mGluR5 with an EC 50 of less than about 10,000 nM. In a still further aspect, the compound exhibits positive allosteric modulation of mGluR5 with an EC 50 of less than about 5,000 nM. In an even further aspect, the compound exhibits positive allosteric modulation of mGluR5 with an EC 50 of less than about 1,000 nM. In a further aspect, the compound exhibits positive allosteric modulation of mGluR5 with an EC 50 of less than about 500 nM. In a yet further aspect, the compound exhibits positive allosteric modulation of mGluR5 with an EC 50 of less than about 100 nM.
  • the mammal is a human.
  • the mammal has been diagnosed with a need for treatment of the disorder prior to the administering step.
  • the method further comprises the step of identifying a mammal in need of treatment of the disorder.
  • the disorder is a neurological and/or psychiatric disorder associated with mGluR5 dysfunction.
  • the disorder is selected from autism, dementia, delirium, amnestic disorders, age-related cognitive decline, schizophrenia, including the positive and negative symptoms thereof and cognitive dysfunction related to schizophrena, psychosis including schizophrenia, schizophreniform disorder, schizoaffective disorder, delusional disorder, brief psychotic disorder, substance-related disorder, movement disorders, epilepsy, chorea, pain, migraine, diabetes, dystonia, obesity, eating disorders, brain edema, sleep disorder, narcolepsy, anxiety, affective disorder, panic attacks, unipolar depression, bipolar disorder, and psychotic depression. .
  • the disorder is selected from dementia, delirium, amnestic disorders, age-related cognitive decline, schizophrenia, psychosis including schizophrenia, schizophreniform disorder, schizoaffective disorder, delusional disorder, brief psychotic disorder, substance-related disorder, movement disorders, epilepsy, including absence epilepsy, chorea, pain, migraine, diabetes, dystonia, obesity, eating disorders, brain edema, sleep disorder, narcolepsy, anxiety, affective disorder, panic attacks, unipolar depression, bipolar disorder, psychotic depression, autism, panic disorder with or without agoraphobia, agoraphobia without history of panic disorder, specific phobia, social phobia, obsessive-compulsive disorder, post-traumatic stress disorder, acute stress disorder, generalized anxiety disorder, anxiety disorder due to a general medical condition, and substance-induced anxiety disorder.
  • schizophrenia psychosis including schizophrenia, schizophreniform disorder, schizoaffective disorder, delusional disorder, brief psychotic disorder, substance-related disorder, movement disorders, epilepsy, including
  • the disorder is absence epilepsy. In a still further aspect, the disorder is selected from cognitive disorders, age-related cognition decline, learning deficit, intellectual impairment disorders, cognition impairment in schizophrenia, cognition impairment in Alzheimer' s disease, and mild cognitive impairment. b. TREATMENT OF A DISEASE OF UNCONTROLLED CELLULAR
  • the invention relates to a method for the treatment of a disease of uncontrolled cellular proliferation in a mammal comprising the step of administering to the mammal at least one disclosed compound or at least one disclosed product in a dosage and amount effective to treat the disease in the mammal.
  • the mammal is a human.
  • the mammal has been diagnosed with a need for treatment of the disease prior to the administering step.
  • the method further comprises the step of identifying a mammal in need of treatment of the disease.
  • the disorder is cancer.
  • the cancer is selected from breast cancer, renal cancer, gastric cancer, and colorectal cancer.
  • the disorder is selected from lymphoma, cancers of the brain, genitourinary tract cancer, lymphatic system cancer, stomach cancer, larynx cancer, lung, pancreatic cancer, breast cancer, and malignant melanoma.
  • the disorder is selected from breast cancer, renal cancer, gastric cancer, colorectal cancer, lymphoma, cancers of the brain, genitourinary tract cancer, lymphatic system cancer, stomach cancer, larynx cancer, lung, pancreatic cancer, and malignant melanoma.
  • the invention relates to a method for potentiation of mGluR5 activity in a mammal comprising the step of administering to the mammal at least one disclosed compound or at least one disclosed product in a dosage and amount effective to increase mGluR5 activity in the mammal either in the presence or absence of the endogenous ligand.
  • the mammal is a human.
  • the mammal has been diagnosed with a need for increasing mGluR5 activity prior to the administering step.
  • the mammal has been diagnosed with a need for treatment of a disorder related to mGluR5 activity prior to the administering step.
  • the method further comprises the step of identifying a mammal in need of increasing mGluR5 activity.
  • the invention relates to a method for potentiation of metabotropic glutamate receptor activity in a mammal comprising the step of administering to the mammal a therapeutically effective amount of at least one compound having a structure represented by a formula:
  • Ar is phenyl substituted with 0-3 substituents independently selected from halogen, cyano, C1-C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or Ar 1 is monocyclic heteroaryl substituted with 0-3 substituents independently selected from halo, cyano, C1-C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl; wherein when is present and A 1 and A 2 are joined by a covalent double bond, A 1 is CR la , and A 2 is CR 2a ; wherein R la is selected from hydrogen, halogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and Cl- C4 polyhaloalkyl; wherein R 2a is selected from hydrogen, halogen, C1-C4 alkyl, C1
  • R lb and R lc are independently selected from hydrogen, fluoro, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or R lb and R lc are covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7-membered spirocycloalkyl; wherein each of R 2b and R 2c are independently selected from hydrogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or R 2b and R 2c are covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7-membered spirocycloalkyl; wherein each of R 2b and R 2c are independently selected from hydrogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or R 2
  • R la and R 2a when present, are optionally covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7-membered fused cycloalkenyl; wherein R lb and R 2b , when present, are optionally covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7-membered fused cycloalkyl; wherein R , when is present, is selected from hydrogen, C1-C6 alkyl;
  • the compound administered is a disclosed compound or a product of a disclosed method of making a compound.
  • the invention relates to a method for potentiation of
  • metabotropic glutamate receptor activity in a mammal comprising the step of administering to the mammal at least one disclosed compound or at least one disclosed product in a dosage and amount effective to increase metabotropic glutamate receptor activity in the mammal either in the presence or absence of the endogenous ligand.
  • the compound exhibits positive allosteric modulation of mGluR5 with an EC 50 of less than about 10,000 nM. In a still further aspect, the compound exhibits positive allosteric modulation of mGluR5 with an EC 50 of less than about 5,000 nM. In an even further aspect, the compound exhibits positive allosteric modulation of mGluR5 with an EC 50 of less than about 1,000 nM. In a further aspect, the compound exhibits positive allosteric modulation of mGluR5 with an EC 50 of less than about 500 nM. In a yet further aspect, the compound exhibits positive allosteric modulation of mGluR5 with an EC 50 of less than about 100 nM.
  • the compound exhibits potentiation of mGluR5 with an EC 50 of less than about 10,000 nM. In a still further aspect, the compound exhibits potentiation of mGluR5 with an EC 50 of less than about 5,000 nM. In an even further aspect, the compound exhibits potentiation of mGluR5 with an EC 50 of less than about 1,000 nM. In a further aspect, the compound exhibits potentiation of mGluR5 with an EC 50 of less than about 500 nM. In a yet further aspect, the compound exhibits potentiation of mGluR5 with an EC 50 of less than about 100 nM.
  • the compound exhibits potentiation of mGluR5 with an EC 50 of between about 10,000 nM to about 1 nM. In a still further aspect, the compound exhibits potentiation of mGluR5 with an EC 50 of between about 1,000 nM to about 1 nM. In a yet further aspect, the compound exhibits potentiation of mGluR5 with an EC 50 of between about 100 nM to about 1 nM. In an even further aspect, the compound exhibits potentiation of mGluR5 with an EC 50 of between about 10 nM to about 1 nM. In a still further aspect, potentiation of mGluR5 activity is positive allosteric modulation of mGluR5 activity.
  • the mammal is a human.
  • the mammal has been diagnosed with a need for potentiation of metabotropic glutamate receptor activity prior to the administering step.
  • the method further comprises comprising the step of identifying a mammal in need for potentiation of metabotropic glutamate receptor activity.
  • the metabotropic glutamate receptor is mGluR5.
  • the potentiation of mGluR5 activity treats a disorder associated with mGluR5 activity in the mammal.
  • the mammal has been diagnosed with a need for treatment of the disorder prior to the administering step.
  • treatment further comprises the step of identifying a mammal in need of treatment of the disorder.
  • potentiation of metabotropic glutamate receptor activity in a mammal is associated with the treatment of a neurological and/or psychiatric disorder associated with mGluR5 dysfunction.
  • the disorder is selected from autism, dementia, delirium, amnestic disorders, age-related cognitive decline, schizophrenia, including the positive and negative symptoms thereof and cognitive dysfunction related to schizophrena, psychosis including schizophrenia, schizophreniform disorder, schizoaffective disorder, delusional disorder, brief psychotic disorder, substance-related disorder, movement disorders, epilepsy, chorea, pain, migraine, diabetes, dystonia, obesity, eating disorders, brain edema, sleep disorder, narcolepsy, anxiety, affective disorder, panic attacks, unipolar depression, bipolar disorder, and psychotic depression.
  • the disorder is selected from dementia, delirium, amnestic disorders, age-related cognitive decline, schizophrenia, psychosis including schizophrenia, schizophreniform disorder, schizoaffective disorder, delusional disorder, brief psychotic disorder, substance-related disorder, movement disorders, epilepsy, including absence epilepsy, chorea, pain, migraine, diabetes, dystonia, obesity, eating disorders, brain edema, sleep disorder, narcolepsy, anxiety, affective disorder, panic attacks, unipolar depression, bipolar disorder, psychotic depression, autism, panic disorder with or without agoraphobia, agoraphobia without history of panic disorder, specific phobia, social phobia, obsessive-compulsive disorder, post-traumatic stress disorder, acute stress disorder, generalized anxiety disorder, anxiety disorder due to a general medical condition, and substance-induced anxiety disorder.
  • schizophrenia psychosis including schizophrenia, schizophreniform disorder, schizoaffective disorder, delusional disorder, brief psychotic disorder, substance-related disorder, movement disorders, epilepsy, including
  • the disorder is absence epilepsy.
  • the disorder is selected from cognitive disorders, age-related cognition decline, learning deficit, intellectual impairment disorders, cognition impairment in schizophrenia, cognition impairment in Alzheimer' s disease, and mild cognitive impairment.
  • potentiation of metabotropic glutamate receptor activity in a mammal is associated with the treatment of a disorder associated with uncontrolled cellular proliferation.
  • the disorder associated with uncontrolled cellular proliferation is cancer.
  • the cancer is selected from breast cancer, renal cancer, gastric cancer, and colorectal cancer.
  • the disorder is selected from lymphoma, cancers of the brain, genitourinary tract cancer, lymphatic system cancer, stomach cancer, larynx cancer, lung, pancreatic cancer, breast cancer, and malignant melanoma.
  • the disorder is selected from breast cancer, renal cancer, gastric cancer, colorectal cancer, lymphoma, cancers of the brain, genitourinary tract cancer, lymphatic system cancer, stomach cancer, larynx cancer, lung, pancreatic cancer, and malignant melanoma.
  • the invention relates to a method for partial agonism of
  • the method relates to a method for partial agonism of metabotropic glutamate receptor activity in a mammal by contacting at least one cell in the mammal, comprising the step of contacting the at least one cell with at least one disclosed compound or at least one disclosed product in an amount effective to inhibit mGluR5 activity in the at least one cell.
  • the invention relates to a method for partial agonism of
  • Ar is phenyl substituted with 0-3 substituents independently selected from halogen, cyano, C1-C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or Ar 1 is monocyclic heteroaryl substituted with 0-3 substituents independently selected from halo, cyano, C1-C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl; wherein when is present and A 1 and A 2 are joined by a covalent double bond, A 1 is CR la , and A 2 is CR 2a ; wherein R la is selected from hydrogen, halogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and Cl- C4 polyhaloalkyl; wherein R 2a is selected from hydrogen, halogen, C1-C4 alkyl, C1
  • R lb and R lc are independently selected from hydrogen, fluoro, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or R lb and R lc are covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7-membered spirocycloalkyl; wherein each of R 2b and R 2c are independently selected from hydrogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or R 2b and R 2c are covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7-membered spirocycloalkyl; wherein each of R 2b and R 2c are independently selected from hydrogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or R 2
  • R la and R 2a when present, are optionally covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7-membered fused cycloalkenyl; wherein R lb and R 2b , when present, are optionally covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7-membered fused cycloalkyl; wherein R , when is present, is selected from hydrogen, C1-C6 alkyl;
  • R 3 when is not present, is Ar 2 ;
  • R 4 is selected from hydrogen, halogen, cyano, C1-C4 alkyl, C1-C4 monohaloalkyl, C1-C4 polyhaloalkyl, C1-C4 alkylamino, C1-C4 dialkylamino, and C1-C4 alkoxy; wherein each of R 5a and R 5b is independently selected from hydrogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl; or a pharmaceutically acceptable salt, solvate, or polymorph thereof.
  • the compound administered is a disclosed compound or a product of a disclosed method of making a compound.
  • the compound exhibits positive allosteric modulation of mGluR5 with an EC 50 of less than about 10,000 nM.
  • the compound exhibits positive allosteric modulation of mGluR5 with an EC 50 of less than about 5,000 nM.
  • the compound exhibits positive allosteric modulation of mGluR5 with an EC 50 of less than about 1,000 nM.
  • the compound exhibits positive allosteric modulation of mGluR5 with an EC 50 of less than about 500 nM.
  • the compound exhibits positive allosteric modulation of mGluR5 with an EC 50 of less than about 100 nM.
  • the mammal is a human.
  • the mammal has been diagnosed with a need for partial agonism of metabotropic glutamate receptor activity prior to the administering step.
  • the method further comprises the step of identifying a mammal in need for partial agonism of metabotropic glutamate receptor activity.
  • the metabotropic glutamate receptor is mGluR5.
  • partial agonism of metabotropic glutamate receptor activity in a mammal is associated with the treatment of a neurological and/or psychiatric disorder associated with mGluR5 dysfunction.
  • the disorder is selected from autism, dementia, delirium, amnestic disorders, age-related cognitive decline, schizophrenia, including the positive and negative symptoms thereof and cognitive dysfunction related to schizophrena, psychosis including schizophrenia, schizophreniform disorder, schizoaffective disorder, delusional disorder, brief psychotic disorder, substance-related disorder, movement disorders, epilepsy, chorea, pain, migraine, diabetes, dystonia, obesity, eating disorders, brain edema, sleep disorder, narcolepsy, anxiety, affective disorder, panic attacks, unipolar depression, bipolar disorder, and psychotic depression.
  • the disorder is selected from dementia, delirium, amnestic disorders, age-related cognitive decline, schizophrenia, psychosis including schizophrenia, schizophreniform disorder, schizoaffective disorder, delusional disorder, brief psychotic disorder, substance-related disorder, movement disorders, epilepsy, including absence epilepsy, chorea, pain, migraine, diabetes, dystonia, obesity, eating disorders, brain edema, sleep disorder, narcolepsy, anxiety, affective disorder, panic attacks, unipolar depression, bipolar disorder, psychotic depression, autism, panic disorder with or without agoraphobia, agoraphobia without history of panic disorder, specific phobia, social phobia, obsessive-compulsive disorder, post-traumatic stress disorder, acute stress disorder, generalized anxiety disorder, anxiety disorder due to a general medical condition, and substance-induced anxiety disorder.
  • schizophrenia psychosis including schizophrenia, schizophreniform disorder, schizoaffective disorder, delusional disorder, brief psychotic disorder, substance-related disorder, movement disorders, epilepsy, including
  • the disorder is absence epilepsy.
  • the disorder is selected from cognitive disorders, age-related cognition decline, learning deficit, intellectual impairment disorders, cognition impairment in schizophrenia, cognition impairment in Alzheimer' s disease, and mild cognitive impairment.
  • partial agonism of metabotropic glutamate receptor activity in a mammal is associated with the treatment of a disorder associated with uncontrolled cellular proliferation.
  • the disorder associated with uncontrolled cellular proliferation is cancer.
  • the cancer is selected from breast cancer, renal cancer, gastric cancer, and colorectal cancer.
  • the disorder is selected from lymphoma, cancers of the brain, genitourinary tract cancer, lymphatic system cancer, stomach cancer, larynx cancer, lung, pancreatic cancer, breast cancer, and malignant melanoma.
  • the disorder is selected from breast cancer, renal cancer, gastric cancer, colorectal cancer, lymphoma, cancers of the brain, genitourinary tract cancer, lymphatic system cancer, stomach cancer, larynx cancer, lung, pancreatic cancer, and malignant melanoma.
  • the invention relates to a method for enhancing cognition in a mammal comprising the step of administering to the mammal an effective amount of at least one disclosed compound.
  • the invention relates to a method for enhancing cognition in a mammal comprising the step of administering to the mammal an effective amount of at least one compound having a structure represented by a formula:
  • Ar is phenyl substituted with 0-3 substituents independently selected from halogen, cyano, C1-C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or Ar 1 is monocyclic heteroaryl substituted with 0-3 substituents independently selected from halo, cyano, C1-C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl; wherein when is present and A 1 and A 2 are joined by a covalent double bond, A 1 is CR la , and A 2 is CR 2a ; wherein R la is selected from hydrogen, halogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and Cl- C4 polyhaloalkyl; wherein R 2a is selected from hydrogen, halogen, C1-C4 alkyl, C1
  • R lb and R lc are independently selected from hydrogen, fluoro, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or R lb and R lc are covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7-membered spirocycloalkyl; wherein each of R 2b and R 2c are independently selected from hydrogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or R 2b and R 2c are covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7-membered spirocycloalkyl; wherein each of R 2b and R 2c are independently selected from hydrogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or R 2
  • R la and R 2a when present, are optionally covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7-membered fused cycloalkenyl; wherein R lb and R 2b , when present, are optionally covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7-membered fused cycloalkyl; wherein R , when is present, is selected from hydrogen, C1-C6 alkyl;
  • R 3 when is not present, is Ar 2 ;
  • R 4 is selected from hydrogen, halogen, cyano, C1-C4 alkyl, C1-C4 monohaloalkyl, C1-C4 polyhaloalkyl, C1-C4 alkylamino, C1-C4 dialkylamino, and C1-C4 alkoxy; wherein each of R 5a and R 5b is independently selected from hydrogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl; or a pharmaceutically acceptable salt, solvate, or polymorph thereof.
  • the compound administered is a disclosed compound or a product of a disclosed method of making a compound.
  • the compound exhibits positive allosteric modulation of mGluR5 with an EC50 of less than about 10,000 nM.
  • the compound exhibits positive allosteric modulation of mGluR5 with an EC50 of less than about 5,000 nM.
  • the compound exhibits positive allosteric modulation of mGluR5 with an EC50 of less than about 1,000 nM.
  • the compound exhibits positive allosteric modulation of mGluR5 with an EC50 of less than about 500 nM.
  • the compound exhibits positive allosteric modulation of mGluR5 with an EC50 of less than about 100 nM.
  • the mammal is a human. In one aspect, the mammal has been diagnosed with a need for cognition enhancement prior to the administering step. In a still further aspect, the method further comprises the step of identifying a mammal in need of cognition enhancement prior to the administering step. In a further aspect, the cognition enhancement is a statistically significant increase in Novel Object Recognition. In a further aspect, the cognition enhancement is a statistically significant increase in performance of the Wisconsin Card Sorting Test. In a further aspect, the method further comprises the step of identifying a mammal in need of increasing mGluR5 activity. f. MODULATING MGLUR5 ACTIVITY IN MAMMALS
  • the invention relates to a method for modulating mGluR5 activity in a mammal comprising the step of administering to the mammal an effective amount of at least one disclosed compound.
  • the invention relates to a method for modulating mGluR5 activity in a mammal comprising the step of administering to the mammal an effective amount of at least one compound having a structure represented by a formula:
  • Ar is phenyl substituted with 0-3 substituents independently selected from halogen, cyano, C1-C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or Ar 1 is monocyclic heteroaryl substituted with 0-3 substituents independently selected from halo, cyano, C1-C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl; wherein when is present and A 1 and A 2 are joined by a covalent double bond, A 1 is CR la , and A 2 is CR 2a ; wherein R la is selected from hydrogen, halogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and Cl- C4 polyhaloalkyl; wherein R 2a is selected from hydrogen, halogen, C1-C4 alkyl, C1
  • R lb and R lc are independently selected from hydrogen, fluoro, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or R lb and R lc are covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7-membered spirocycloalkyl; wherein each of R 2b and R 2c are independently selected from hydrogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or R 2b and R 2c are covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7-membered spirocycloalkyl; wherein each of R 2b and R 2c are independently selected from hydrogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or R 2
  • R la and R 2a when present, are optionally covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7-membered fused cycloalkenyl; wherein R lb and R 2b , when present, are optionally covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7-membered fused cycloalkyl; wherein R , when is present, is selected from hydrogen, C1-C6 alkyl;
  • R 3 when is not present, is Ar 2 ;
  • R 4 is selected from hydrogen, halogen, cyano, C1-C4 alkyl, C1-C4 monohaloalkyl, C1-C4 polyhaloalkyl, C1-C4 alkylamino, C1-C4 dialkylamino, and C1-C4 alkoxy; wherein each of R 5a and R 5b is independently selected from hydrogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl; or a pharmaceutically acceptable salt, solvate, or polymorph thereof.
  • the compound administered is a disclosed compound or a product of a disclosed method of making a compound.
  • the compound exhibits positive allosteric modulation of mGluR5 with an EC 50 of less than about 10,000 nM.
  • the compound exhibits positive allosteric modulation of mGluR5 with an EC 50 of less than about 5,000 nM.
  • the compound exhibits positive allosteric modulation of mGluR5 with an EC 50 of less than about 1,000 nM.
  • the compound exhibits positive allosteric modulation of mGluR5 with an EC 50 of less than about 500 nM.
  • the compound exhibits positive allosteric modulation of mGluR5 with an EC 50 of less than about 100 nM.
  • modulating is increasing. In a further aspect, modulating is potentiation. In a further aspect, modulating is partial agonism.
  • the mammal is a human.
  • the mammal has been diagnosed with a need for modulating mGluR5 activity prior to the administering step.
  • the mammal has been diagnosed with a need for treatment of a disorder related to mGluR5 activity prior to the administering step.
  • the method further comprises the step of identifying a mammal in need of increasing mGluR5 activity.
  • an effective amount is a therapeutically effective amount.
  • modulating mGluR5 activity in a mammal is associated with the treatment of a neurological and/or psychiatric disorder associated with mGluR5 dysfunction.
  • the disorder is selected from autism, dementia, delirium, amnestic disorders, age-related cognitive decline, schizophrenia, including the positive and negative symptoms thereof and cognitive dysfunction related to schizophrena, psychosis including schizophrenia, schizophreniform disorder, schizoaffective disorder, delusional disorder, brief psychotic disorder, substance-related disorder, movement disorders, epilepsy, chorea, pain, migraine, diabetes, dystonia, obesity, eating disorders, brain edema, sleep disorder, narcolepsy, anxiety, affective disorder, panic attacks, unipolar depression, bipolar disorder, and psychotic depression.
  • the disorder is selected from dementia, delirium, amnestic disorders, age-related cognitive decline, schizophrenia, psychosis including schizophrenia, schizophreniform disorder, schizoaffective disorder, delusional disorder, brief psychotic disorder, substance-related disorder, movement disorders, epilepsy, including absence epilepsy, chorea, pain, migraine, diabetes, dystonia, obesity, eating disorders, brain edema, sleep disorder, narcolepsy, anxiety, affective disorder, panic attacks, unipolar depression, bipolar disorder, psychotic depression, autism, panic disorder with or without agoraphobia, agoraphobia without history of panic disorder, specific phobia, social phobia, obsessive-compulsive disorder, post-traumatic stress disorder, acute stress disorder, generalized anxiety disorder, anxiety disorder due to a general medical condition, and substance-induced anxiety disorder.
  • the disorder is absence epilepsy.
  • the disorder is selected from cognitive disorders, age-related cognition decline, learning deficit, intellectual impairment disorders,
  • modulating mGluR5 activity in a mammal is associated with the treatment of a disorder associated with uncontrolled cellular proliferation.
  • the disorder associated with uncontrolled cellular proliferation is cancer.
  • the cancer is selected from breast cancer, renal cancer, gastric cancer, and colorectal cancer.
  • the disorder is selected from lymphoma, cancers of the brain, genitourinary tract cancer, lymphatic system cancer, stomach cancer, larynx cancer, lung, pancreatic cancer, breast cancer, and malignant melanoma.
  • the disorder is selected from breast cancer, renal cancer, gastric cancer, colorectal cancer, lymphoma, cancers of the brain, genitourinary tract cancer, lymphatic system cancer, stomach cancer, larynx cancer, lung, pancreatic cancer, and malignant melanoma.
  • the invention relates to a method for modulating mGluR5 activity in at least one cell, comprising the step of contacting the at least one cell with an effective amount of at least one disclosed compound.
  • the invention relates to a method for modulating mGluR5 activity in at least one cell, comprising the step of contacting the at least one cell with an effective amount of at least one compound having a structure represented by a formula:
  • Ar is phenyl substituted with 0-3 substituents independently selected from halogen, cyano, C1-C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or Ar 1 is monocyclic heteroaryl substituted with 0-3 substituents independently selected from halo, cyano, C1-C4 alkyl, C1-C4 alkyloxy, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl; wherein when is present and A 1 and A 2 are joined by a covalent double bond, A 1 is CR la , and A 2 is CR 2a ; wherein R la is selected from hydrogen, halogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and Cl- C4 polyhaloalkyl; wherein R 2a is selected from hydrogen, halogen, C1-C4 alkyl, C1
  • R lb and R lc are independently selected from hydrogen, fluoro, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or R lb and R lc are covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7-membered spirocycloalkyl; wherein each of R 2b and R 2c are independently selected from hydrogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or R 2b and R 2c are covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7-membered spirocycloalkyl; wherein each of R 2b and R 2c are independently selected from hydrogen, C1-C4 alkyl, C1-C4 monohaloalkyl, and C1-C4 polyhaloalkyl, or R 2
  • R la and R 2a when present, are optionally covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7-membered fused cycloalkenyl; wherein R lb and R 2b , when present, are optionally covalently bonded and, together with the intermediate atoms, comprise an optionally substituted 3- to 7-membered fused cycloalkyl; wherein R , when is present, is selected from hydrogen, C1-C6 alkyl;
  • the compound administered is a disclosed compound or a product of a disclosed method of making a compound.
  • the compound exhibits positive allosteric modulation of mGluR5 with an EC 50 of less than about 10,000 nM. In a still further aspect, the compound exhibits positive allosteric modulation of mGluR5 with an EC 50 of less than about 5,000 nM. In an even further aspect, the compound exhibits positive allosteric modulation of mGluR5 with an EC 50 of less than about 1,000 nM. In a further aspect, the compound exhibits positive allosteric modulation of mGluR5 with an EC 50 of less than about 500 nM. In a yet further aspect, the compound exhibits positive allosteric modulation of mGluR5 with an EC 50 of less than about 100 nM.
  • the compound exhibits potentiation of mGluR5 with an EC 50 of less than about 10,000 nM. In a still further aspect, the compound exhibits potentiation of mGluR5 with an EC 50 of less than about 5,000 nM. In an even further aspect, the compound exhibits potentiation of mGluR5 with an EC 50 of less than about 1,000 nM. In a further aspect, the compound exhibits potentiation of mGluR5 with an EC 50 of less than about 500 nM. In a yet further aspect, the compound exhibits potentiation of mGluR5 with an EC 50 of less than about 100 nM.
  • the compound exhibits potentiation of mGluR5 with an EC 50 of between about 10,000 nM to about 1 nM. In a still further aspect, the compound exhibits potentiation of mGluR5 with an EC 50 of between about 1,000 nM to about 1 nM. In a yet further aspect, the compound exhibits potentiation of mGluR5 with an EC 50 of between about 100 nM to about 1 nM. In an even further aspect, the compound exhibits potentiation of mGluR5 with an EC 50 of between about 10 nM to about 1 nM. In a still further aspect, potentiation of mGluR5 activity is positive allosteric modulation of mGluR5 activity.
  • modulating is increasing. In a further aspect, modulating is potentiation. In a further aspect, modulating is partial agonism.
  • the cell is mammalian. In a further aspect, the cell is human. In a further aspect, the cell has been isolated from a mammal prior to the contacting step.
  • contacting is via administration to a mammal.
  • the mammal has been diagnosed with a need for modulating mGluR5 activity prior to the administering step.
  • the mammal has been diagnosed with a need for treatment of a disorder related to mGluR5 activity prior to the administering step.
  • modulating mGluR5 activity in at least one cell treats a neurological and/or psychiatric disorder.
  • the disorder is selected from autism, dementia, delirium, amnestic disorders, age-related cognitive decline, schizophrenia, including the positive and negative symptoms thereof and cognitive dysfunction related to schizophrena, psychosis including schizophrenia, schizophreniform disorder, schizoaffective disorder, delusional disorder, brief psychotic disorder, substance-related disorder, movement disorders, epilepsy, chorea, pain, migraine, diabetes, dystonia, obesity, eating disorders, brain edema, sleep disorder, narcolepsy, anxiety, affective disorder, panic attacks, unipolar depression, bipolar disorder, and psychotic depression.
  • the disorder is selected from dementia, delirium, amnestic disorders, age-related cognitive decline, schizophrenia, psychosis including schizophrenia, schizophreniform disorder, schizoaffective disorder, delusional disorder, brief psychotic disorder, substance-related disorder, movement disorders, epilepsy, including absence epilepsy, chorea, pain, migraine, diabetes, dystonia, obesity, eating disorders, brain edema, sleep disorder, narcolepsy, anxiety, affective disorder, panic attacks, unipolar depression, bipolar disorder, psychotic depression, autism, panic disorder with or without agoraphobia, agoraphobia without history of panic disorder, specific phobia, social phobia, obsessive-compulsive disorder, post-traumatic stress disorder, acute stress disorder, generalized anxiety disorder, anxiety disorder due to a general medical condition, and substance-induced anxiety disorder.
  • schizophrenia psychosis including schizophrenia, schizophreniform disorder, schizoaffective disorder, delusional disorder, brief psychotic disorder, substance-related disorder, movement disorders, epilepsy, including
  • the disorder is absence epilepsy.
  • the disorder is selected from cognitive disorders, age-related cognition decline, learning deficit, intellectual impairment disorders, cognition impairment in schizophrenia, cognition impairment in Alzheimer' s disease, and mild cognitive impairment.
  • modulating mGluR5 activity in at least one cell treats a disorder associated with uncontrolled cellular proliferation.
  • the disorder associated with uncontrolled cellular proliferation is cancer.
  • the cancer is selected from breast cancer, renal cancer, gastric cancer, and colorectal cancer.
  • the disorder is selected from lymphoma, cancers of the brain, genitourinary tract cancer, lymphatic system cancer, stomach cancer, larynx cancer, lung, pancreatic cancer, breast cancer, and malignant melanoma.
  • the disorder is selected from breast cancer, renal cancer, gastric cancer, colorectal cancer, lymphoma, cancers of the brain, genitourinary tract cancer, lymphatic system cancer, stomach cancer, larynx cancer, lung, pancreatic cancer, and malignant melanoma.
  • the present invention is further directed to administration of a mGluR5 potentiator for improving treatment outcomes in the context of cognitive or behavioral therapy. That is, in one aspect, the invention relates to a cotherapeutic method comprising the step of administering to a mammal an effective amount of at least one disclosed compound; at least one product of a disclosed method of making; or a pharmaceutically effective salt, hydrate, solvate, or polymorph thereof.
  • the mammal is a human.
  • an effective amount is a therapeutically effective amount.
  • an effective amount is a prophylatically effective amount.
  • treatment is symptom
  • an effective amount is a prophylatically effective amount.
  • adminstration improves treatment outcomes in the context of cognitive or behavioral therapy.
  • Adminstration in connection with cognitive or behavioral therapy can be continuous or intermittent. Adminstration need not be simultaneous with therapy and can be before, during, and/or after therapy.
  • cognitive or behavioral therapy can be provided within 1, 2, 3, 4, 5, 6, or 7 days before or after administration of the compound.
  • cognitive or behavioral therapy can be provided within 1, 2, 3, or 4 weeks before or after administration of the compound.
  • cognitive or behavioral therapy can be provided before or after administration within a period of time of 1, 2, 3, 4, 5, 6, 7, 8, 9, or 10 half-lives of the administered compound. It is understood that the disclosed cotherapeutic methods can be used in connection with the disclosed compounds, compositions, kits, and uses.
  • the invention relates to a method for the manufacture of a medicament for potentiation of metabotropic glutamate receptor activity in a mammal comprising combining a therapeutically effective amount of a disclosed compound or product of a disclosed method with a pharmaceutically acceptable carrier or diluent.
  • the invention relates methods for the manufacture of a medicament for modulating the activity mGluR5 (e.g. , treatment of one or more neurological and/or psychiatric disorder associated with mGluR5 dysfunction) in mammals (e.g. , humans) comprising combining one or more disclosed compounds, products, or compositions or a pharmaceutically acceptable salt, solvate, hydrate, or polymorph thereof, with a
  • the invention relates to the use of a disclosed compound or a product of a disclosed method of making.
  • the use relates to the manufacture of a medicament for the treatment of a disorder associated with glutamate dysfunction in a mammal.
  • the disorder is a neurological and/or psychiatric disorder.
  • the disorder is a disease of uncontrolled cellular proliferation.
  • a use relates to treatment of a neurological and/or psychiatric disorder associated with glutamate dysfunction in a mammal.
  • a use relates to potentiation of metabotropic glutamate receptor activity in a mammal.
  • a use relates to partial agonism of metabotropic glutamate receptor activity in a mammal.
  • a use relates to enhancing cognition in a mammal.
  • a use relates to modulating mGluR5 activity in a mammal.
  • a use relates to modulating mGluR5 activity in a cell.
  • a use is treatment of a neurological and/or psychiatric disorder associated with mGluR5 dysfunction.
  • the disorder is selected from dementia, delirium, amnestic disorders, age-related cognitive decline, schizophrenia, schizophreniform disorder, schizoaffective disorder, delusional disorder, brief psychotic disorder, substance-related disorder, movement disorders, epilepsy, chorea, pain, migraine, diabetes, dystonia, obesity, eating disorders, brain edema, sleep disorder, narcolepsy, anxiety, affective disorder, panic attacks, unipolar depression, bipolar disorder, and psychotic depression.
  • a use is associated with the treatment of a disorder associated with uncontrolled cellular proliferation.
  • the disorder is cancer.
  • the cancer is selected from breast cancer, renal cancer, gastric cancer, and colorectal cancer.
  • the disorder is selected from lymphoma, cancers of the brain, genitourinary tract cancer, lymphatic system cancer, stomach cancer, larynx cancer, lung, pancreatic cancer, breast cancer, and malignant melanoma.
  • the invention relates to the use of a disclosed compound or a disclosed product in the manufacture of a medicament for the treatment of a disorder associated with glutamate dysfunction in a mammal.
  • the disorder is a neurological and/or psychiatric disorder.
  • the disorder is a disease of uncontrolled cellular proliferation.
  • the invention relates to the use of a disclosed compound or a product of a disclosed method of making, or a pharmaceutically acceptable salt, solvate, or polymorph thereof, or a pharmaceutical composition for use in treating or preventing a central nervous system disorder selected from the group of psychotic disorders and conditions;

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  • Nitrogen Condensed Heterocyclic Rings (AREA)

Abstract

Dans un aspect, l'invention concerne des analogues d'imidazopyrimidin-5(6H)-one, des dérivés de ceux-ci et des composés associés, qui sont utiles en tant que modulateurs allostériques positifs du sous-type 5 du récepteur métabotropique du glutamate (mGluR5) ; des procédés de synthèse pour la fabrication des composés ; des compositions pharmaceutiques comprenant les composés ; et des méthodes de traitement de troubles neurologiques et psychiatriques associés à un dysfonctionnement du glutamate à l'aide des composés et compositions. Ce résumé est destiné à être un outil de balayage à des fins de recherche dans l'état de la technique particulier et n'est pas destiné à limiter la présente invention.
EP12757940.7A 2011-03-15 2012-03-14 Imadazapyrinidin-5(6h)-ones substituées en tant que modulateurs allostériques des récepteurs mglur5 Withdrawn EP2685825A4 (fr)

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US201161452921P 2011-03-15 2011-03-15
PCT/US2012/029085 WO2012125732A1 (fr) 2011-03-15 2012-03-14 Imadazapyrinidin-5(6h)-ones substituées en tant que modulateurs allostériques des récepteurs mglur5

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EP2685825A1 true EP2685825A1 (fr) 2014-01-22
EP2685825A4 EP2685825A4 (fr) 2014-09-10

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EP (1) EP2685825A4 (fr)
JP (1) JP2014508172A (fr)
AU (1) AU2012229983A1 (fr)
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WO (1) WO2012125732A1 (fr)

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US9255103B2 (en) 2010-12-08 2016-02-09 Vanderbilt University Substituted pyrazolo[1,5-a]pyrazines as mGluR5 receptor modulators

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US8865725B2 (en) * 2011-03-15 2014-10-21 Vanderbilt University Substituted imidazopyrimidin-5(6H)-ones as allosteric modulators of MGLUR5 receptors
EP2864331B1 (fr) * 2012-06-21 2017-08-09 Bristol-Myers Squibb Company Modulateurs allostériques positifs de mglur2
TWI713497B (zh) * 2015-02-26 2020-12-21 南韓商愛思開生物製藥股份有限公司 咪唑并嘧啶及咪唑并三衍生物及包含該衍生物之醫藥組成物
WO2021080312A1 (fr) 2019-10-21 2021-04-29 에스케이바이오팜 주식회사 Utilisation de composés d'imidazopyrimidine ou d'imidazotriazine pour la prévention, le soulagement ou le traitement de troubles cognitifs, ou pour améliorer la fonction cognitive
WO2023064223A1 (fr) 2021-10-11 2023-04-20 Gossamer Bio Services, Inc. Pyridines tri-substituées

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WO2008107418A1 (fr) * 2007-03-05 2008-09-12 Novartis Ag Composés de pyrimidinone fusionnés comme ligands mglur
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CA2830220A1 (fr) 2012-09-20
AU2012229983A1 (en) 2013-10-03
JP2014508172A (ja) 2014-04-03
EP2685825A4 (fr) 2014-09-10
WO2012125732A8 (fr) 2013-10-17
WO2012125732A1 (fr) 2012-09-20

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